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| -rw-r--r-- | COPYING | 674 | ||||
| -rw-r--r-- | ChangeLog | 666 | ||||
| -rw-r--r-- | Makefile | 112 | ||||
| -rw-r--r-- | doc/ANNOUNCE.mkdosfs | 41 | ||||
| -rw-r--r-- | doc/ChangeLog.dosfsck | 10 | ||||
| -rw-r--r-- | doc/ChangeLog.dosfstools-2.x | 161 | ||||
| -rw-r--r-- | doc/ChangeLog.mkdosfs | 18 | ||||
| -rw-r--r-- | doc/README.dosfsck | 60 | ||||
| -rw-r--r-- | doc/README.dosfstools-2.x | 60 | ||||
| -rw-r--r-- | doc/README.mkdosfs | 50 | ||||
| -rw-r--r-- | doc/TODO.dosfstools-2.x | 14 | ||||
| -rw-r--r-- | man/dosfsck.8 | 112 | ||||
| -rw-r--r-- | man/dosfslabel.8 | 29 | ||||
| -rw-r--r-- | man/mkdosfs.8 | 224 | ||||
| -rw-r--r-- | packaging/dosfstools.changes | 163 | ||||
| -rw-r--r-- | packaging/dosfstools.spec | 34 | ||||
| -rw-r--r-- | src/boot.c | 516 | ||||
| -rw-r--r-- | src/boot.h | 31 | ||||
| -rw-r--r-- | src/check.c | 985 | ||||
| -rw-r--r-- | src/check.h | 40 | ||||
| -rw-r--r-- | src/common.c | 121 | ||||
| -rw-r--r-- | src/common.h | 57 | ||||
| -rw-r--r-- | src/dosfsck.c | 204 | ||||
| -rw-r--r-- | src/dosfsck.h | 214 | ||||
| -rw-r--r-- | src/dosfslabel.c | 127 | ||||
| -rw-r--r-- | src/fat.c | 558 | ||||
| -rw-r--r-- | src/fat.h | 85 | ||||
| -rw-r--r-- | src/file.c | 269 | ||||
| -rw-r--r-- | src/file.h | 72 | ||||
| -rw-r--r-- | src/io.c | 222 | ||||
| -rw-r--r-- | src/io.h | 71 | ||||
| -rw-r--r-- | src/lfn.c | 505 | ||||
| -rw-r--r-- | src/lfn.h | 38 | ||||
| -rw-r--r-- | src/mkdosfs.c | 1809 | ||||
| -rw-r--r-- | src/version.h | 28 |
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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + <program> Copyright (C) <year> <name of author> + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +<http://www.gnu.org/licenses/>. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +<http://www.gnu.org/philosophy/why-not-lgpl.html>. diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..c134525 --- /dev/null +++ b/ChangeLog @@ -0,0 +1,666 @@ +commit 8b7c9d94a4571142a77a587138bc26b39f8e2863 +Author: Alexander Korolkov <alexander.korolkov@gmail.com> +Date: Sun Sep 12 09:29:12 2010 +0200 + + Modify LFN direntries when file is renamed or deleted, see + Debian bug #596329. + +commit 761b798f3bf2b4a87f2d454f555e18758791c864 +Author: Alexander Korolkov <alexander.korolkov@gmail.com> +Date: Sun Sep 12 09:27:07 2010 +0200 + + If the test of short filename fails, dosfsck could complain about + bad long filename, see Debian bug #596327. + +commit 8fa3587a946614cd43d813052e0e31e595e6d63d +Author: Alexander Korolkov <alexander.korolkov@gmail.com> +Date: Sun Sep 12 09:24:47 2010 +0200 + + dosfsck: don't complain about bad filenames when short filename + contains 7 or more characters with codes 128-255, see Debian + bug #596327. + +commit 3893857b841096de6a422ef5bed1b2618a7037d5 +Author: Mitch Rybczynski <mrybczynski@miovision.com> +Date: Mon Jul 5 14:45:54 2010 +0200 + + Adding __arm__ define check for some crosscompile toolchains. + +commit 7d03b3cc96b83b67638b463610a29abfd6f51f77 +Author: Daniel Baumann <daniel@debian.org> +Date: Sun Mar 14 16:42:32 2010 +0100 + + Modernizing dosfslabel manpage. + +commit 258049911c5df476fb434e0d87e0ece01b9ba137 +Author: Daniel Baumann <daniel@debian.org> +Date: Sun Mar 14 16:33:47 2010 +0100 + + Modernizing dosfsck manpage. + +commit 50d1d96b9666913a90e16904a63e29925675859c +Author: Daniel Baumann <daniel@debian.org> +Date: Sun Mar 14 16:05:32 2010 +0100 + + Fixing spelling error in boot.c. + +commit 0e87c7890b598d78c6aa3d2a06b2306980e75a3d +Author: Daniel Baumann <daniel@debian.org> +Date: Sun Jan 31 08:31:32 2010 +0100 + + Releasing upstream version 3.0.9. + +commit 9415707c2c9ad22b48660593915667dd228722fa +Author: Daniel Kahn Gillmor <dkg@fifthhorseman.net> +Date: Sun Jan 31 00:11:41 2010 -0500 + + Be sure to store the updated reserved_sector count in the boot sector, + see Debian bug #567337. + +commit 68b3f00471f60a692fe021d65289bbaf2dc990d5 +Author: Daniel Baumann <daniel@debian.org> +Date: Sat Jan 23 10:16:18 2010 +0100 + + Releasing upstream version 3.0.8. + +commit 69dbf2e002f0cb3f0781256dec7258b66ffae3b6 +Author: Daniel Baumann <daniel@debian.org> +Date: Sat Jan 23 10:15:01 2010 +0100 + + Removing some cruft in end-comments. + +commit eef306657f3152bbf913a8a45c514f11b2dc2494 +Author: Steven J. Magnani <steve@digidescorp.com> +Date: Thu Jan 21 16:58:11 2010 +0100 + + When compiling a 32-bit version of dosfstools on an x86_64 machine, + the resulting applications report strange errors on "large" (> 2 GiB) + partitions: + + Seek to -2118967808:Invalid argument + + Warning: Filesystem is FAT32 according to fat_length and fat32_length fields, + but has only 8613 clusters, less than the required minimum of 65525. + This may lead to problems on some systems. + + This appears to be due to compilation with a 32-bit off_t and lseek() library + function. + + Use lseek64 for positioning, and change some suspect uses of off_t to loff_t. + +commit e69f49dd1fe52780071cb3f024d1a8246125915a +Author: Steven J. Magnani <steve@digidescorp.com> +Date: Thu Jan 21 16:56:26 2010 +0100 + + If dosfsck is run in read-only mode (-n), exit with code 0 + if the only issue found is an uninitialized free cluster summary. + +commit e52a16d488cf680117e4d476400bdd7915ef2f7a +Author: Steven J. Magnani <steve@digidescorp.com> +Date: Thu Jan 21 16:55:30 2010 +0100 + + On x86_64, dosfsck incorrectly claims that a free_cluster summary of + 0xFFFFFFFF, defined by Microsoft to be "uninitialized," is wrong. + +commit 32db02998ed7882df355fa4077009e8d363df3ab +Author: H. Peter Anvin <hpa@zytor.com> +Date: Fri Jan 8 09:16:38 2010 +0100 + + mkdosfs: correct alignment of the root directory. + + Correct the code to align the root directory; it was broken before + since bs.dir_entries had already been set at the point of alignment. + This patch removes the dual use of bs.dir_entries and root_dir_entries + to carry the same information: the information is carried in + root_dir_entires exclusively, and then bs.dir_entries is set inside + setup_tables() at a late point. + + The code to align the root directory is also wrapped in + if (align_structures); this avoids rounding the number of root + directory entries up to a whole sector when used with -a + (i.e. preserves the previous behavior.) + +commit e462ac31a1d5d235b8a31a9e392e44e2dbc3783c +Author: H. Peter Anvin <hpa@zytor.com> +Date: Wed Jan 6 20:55:36 2010 +0100 + + mkdosfs: improve wording in the man page for the -a option. + + Improve the English language used in the man page for the -a (no + align) option to mkdosfs. + +commit 680d71d167f30a823f88dd66473fc664cd887ab0 +Author: Daniel Baumann <daniel@debian.org> +Date: Wed Jan 6 11:27:25 2010 +0100 + + Adding reference to dosfslable in mkdosfs manpage. + +commit 60fc9f853c1045e615b34a193738f88021678d30 +Author: H. Peter Anvin <hpa@zytor.com> +Date: Wed Jan 6 11:18:55 2010 +0100 + + mkdosfs: by default align all structures to cluster boundaries + + Align all data structures (reserved sectors, FATs, root directory for + FAT12/16) to an even multiple of the cluster size. This means that if + the partition is aligned, so will all clusters be. This adds + significant performance for anything where the physical sector size is + larger than the logical sector size, e.g. flash media or large-sector + hard disks. + +commit 312b05fc47107f695483994375a1f6f429069708 +Author: Daniel Baumann <daniel@debian.org> +Date: Thu Dec 24 10:53:36 2009 +0100 + + Releasing upstream version 3.0.7. + +commit 844307669208608a3464157ddb5e789bd9556f34 +Author: Ben Hutchings <ben@decadent.org.uk> +Date: Thu Dec 24 09:55:52 2009 +0100 + + Fixing dosfslabel to set volume label in the right place, + see Debian bug #559985. + +commit 1bae0e2037717d65b3283db9da51ae7686a7a9be +Author: Lubomir Rintel <lkundrak@v3.sk> +Date: Thu Dec 24 09:39:39 2009 +0100 + + Fixing out-of bound writes. + + Firstly, packed attribute is added to the structure so that extension + is guarranteed to immediately follow name for the cross-name-extension + reads to succeed. + + Secondly, writes into dir_entry->name that span through the extension as + well are split into two, so that FORTIFY_SOURCE's bound checking does + not abort dosfsck. There also was an off-by-one error in auto_rename()'s + sprintf(). + +commit eb297071adfca1ed7af85ca111f20ab41db8ac59 +Author: San Mehat <san@google.com> +Date: Thu Dec 24 09:31:41 2009 +0100 + + Adding custom exit code in dosfsck for the case where the FS is read only. + +commit b3864d0939c960d0e0f15e4e3b1d626639b64681 +Author: Daniel Baumann <daniel@debian.org> +Date: Sun Oct 4 10:59:33 2009 +0200 + + Releasing upstream version 3.0.6. + +commit 144f8fcfc3f7982e8f460f8379a753b7a5941783 +Author: Steven J. Magnani <steve@digidescorp.com> +Date: Sun Oct 4 10:58:43 2009 +0200 + + Attempt to improve clarity of the orphan cluster reclaim code. + Minor optimization - remove some unnecessary checking. + +commit 343fe6d5e7135efadc498fd91e19ba8da499d0c9 +Author: Steven J. Magnani <steve@digidescorp.com> +Date: Sun Oct 4 08:37:19 2009 +0200 + + Close hole that permitted clusters to link to (invalid) cluster 1. + + If an orphan chain that linked to cluster 1 was reclaimed to a file, + deletion of the file would result in a filesystem panic. + +commit db079a02059d7f7296fbe9f87624623a43816c5f +Author: Steven J. Magnani <steve@digidescorp.com> +Date: Sun Oct 4 08:32:30 2009 +0200 + + Fix erroneous report of huge number of clusters in use on big-endian + systems when the FSINFO free cluster count is reset. + +commit 7d5320b8a374b8da1a16b09b3b9b0713828d6755 +Author: Daniel Baumann <daniel@debian.org> +Date: Mon Jul 27 14:26:11 2009 +0200 + + Releasing upstream version 3.0.5. + +commit e80ede4dd3c2058fe32e29ff82244ecb1c7c5514 +Author: Piotr Kaczuba <pepe@attika.ath.cx> +Date: Sun Jul 26 22:21:25 2009 +0200 + + Signed/unsigned char mismatch in check.c causes false positives + in bad_name() and can result in data loss, see Debian bug #538758. + +commit 9e15ddf6d52dd166efcb59f91f16fb9d695c86c5 +Author: Andrew Tridgell <tridge@samba.org> +Date: Sun Jul 26 22:12:06 2009 +0200 + + Update to new kernel patches that add FAT_NO_83NAME flag. + + See http://lkml.org/lkml/2009/7/20/425 and + http://lkml.org/lkml/2009/7/20/424 for more information. + +commit 6c68b94008157c444954d2f90a7f9ec8ffc2ec87 +Author: Daniel Baumann <daniel@debian.org> +Date: Tue Jul 21 08:10:52 2009 +0200 + + Releasing upstream version 3.0.4. + +commit 3ce6422e93f3de746be092e324253a8722917a86 +Author: Andrew Tridgell <tridge@samba.org> +Date: Tue Jul 21 07:59:22 2009 +0200 + + Modify dosfstools to support the dummy 8.3 short filename values + used by Linux systems with the VFAT_FS_DUALNAMES option disabled. + + See http://lkml.org/lkml/2009/6/26/313 and + http://lkml.org/lkml/2009/6/26/314 for more information. + +commit 94f8769aeddf0d0d3f0be54361514a464907a4a1 +Author: Paul Rupe <prupe@nc.rr.com> +Date: Tue May 19 10:37:52 2009 +0200 + + Fixing "Too many files need repair" error during fsck. + +commit 89566399e407e54eb14d275770106ad42b3ac87c +Author: Daniel Baumann <daniel@debian.org> +Date: Mon May 18 15:12:04 2009 +0200 + + Releasing upstream version 3.0.3. + +commit 8147c98a542b714ccab34b57c84ed842bb6b50f2 +Author: Daniel Baumann <daniel@debian.org> +Date: Mon May 18 15:10:55 2009 +0200 + + Also declaring arm as an unaligned architecture, see Debian bug #502961. + +commit 18e27fa5c0f811e7edc10bca771acc7c04b19146 +Author: Steven J. Magnani <steve@digidescorp.com> +Date: Mon May 18 15:01:49 2009 +0200 + + Adding support for limited-memory embedded systems. + + This patch reorganizes heap memory usage by dosfsck and mkdosfs + to support limited-memory embedded systems - in particular, those + based on Xilinx's Microblaze processor. It also adds a few comments. + +commit 180b68e652df7bfeb7f336e0247aee8873edea7f +Author: Mike Frysinger <vapier@gentoo.org> +Date: Thu Mar 5 07:03:36 2009 +0100 + + Declaring Blackfin as an unaligned architecture. + +commit 71ac75353d9158aed663f0a3a9d1a1a67ee4ff4f +Author: Daniel Baumann <daniel@debian.org> +Date: Sat Feb 28 09:48:04 2009 +0100 + + Releasing upstream version 3.0.2. + +commit a75924b8ff629fe7ca5ba9c58ac75f66290242ee +Author: Hiroaki Ishizawa <hiroaki.ishizawa@gmail.com> +Date: Fri Feb 13 10:00:46 2009 +0100 + + dosfsck corrupts root directory when fs->nfats is 1. + +commit 161a5e1fdd019732e0a304beceaeeb606eb128d6 +Author: Stepan Kasal <skasal@redhat.com> +Date: Fri Jan 30 14:56:33 2009 +0100 + + src/dosfslabel.c (main): After writing the label, exit code should be 0. + +commit 26ffa1fb565c2b3284b846ca2733118808c85cb5 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Jan 30 14:06:01 2009 +0100 + + Also installing ChangeLog in install-doc target of Makefile. + +commit abad38ee561b02ec47be7e861780bf5fa2a05d0b +Author: Stepan Kasal <skasal@redhat.com> +Date: Fri Jan 30 14:05:12 2009 +0100 + + Makefile: Do not clobber time stamps of doc files. + +commit 81882d20ec6bd4bf4914d39636cecc8c8e57dd67 +Author: Daniel Baumann <daniel@debian.org> +Date: Sun Nov 23 22:45:45 2008 +0100 + + Releasing upstream version 3.0.1. + +commit 41574812a2586f0b6aa1d4f6e2276e557e9cbbcf +Author: Daniel Baumann <daniel@debian.org> +Date: Sun Nov 23 18:41:01 2008 +0100 + + Applying Fedoras dosfstools-vfat-timingfix.diff from Bill Nottingham + <notting@redhat.com> to fix vfat timing issue. See + https://bugzilla.redhat.com/show_bug.cgi?id=448247 for more information. + +commit b80656109cc5cffdefd626c2ec9d45e3cf63a03e +Author: Ulrich Mueller <ulm@gentoo.org> +Date: Tue Oct 7 07:55:37 2008 +0200 + + Patch to check for bad number of clusters in dosfsck: + + * FAT16 filesystems with 65525 clusters or more will be rejected + (Before, this was not tested for. Up to 65535 clusters were accepted + as good). + + * For FAT32 filesystems with less than 65525 a warning message will be + output. + + Macro MSDOS_FAT12 is now replaced by FAT12_THRESHOLD to make it + consistent with the definition in mkdosfs and to remove the dependency + on the kernel version. + +commit b9c13d143c420a3ec6e1dcb652cafa407621e9c7 +Author: Dann Frazier <dannf@hp.com> +Date: Tue Sep 30 07:25:19 2008 +0200 + + Changing some wording to make the indended meaning of "full-disk device" + more obvious. + +commit 4df18ad463f41ae368c3c51bfb5a033072605663 +Author: Daniel Baumann <daniel@debian.org> +Date: Sun Sep 28 11:43:19 2008 +0200 + + Releasing upstream version 3.0.0. + +commit 17fbf2a6dc9255a6bb832472ae7cda674b55e961 +Author: Daniel Baumann <daniel@debian.org> +Date: Sun Sep 28 11:29:01 2008 +0200 + + Adding GPL headers to all files. + +commit d2039e12c8d53472411c91eb8e7a7c0544e13d6d +Author: Daniel Baumann <daniel@debian.org> +Date: Sun Sep 28 10:51:55 2008 +0200 + + Adding new GPL license file. + +commit e4e457f4b57090ecf0539f48dc682ab9afd14ab8 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 23:31:12 2008 +0200 + + Redoing Makefile from scratch. + +commit 216568ca3a01ed38962b22c7bf838d15d5a4d98d +Author: Daniel Baumann <daniel@debian.org> +Date: Sat Sep 27 00:17:38 2008 +0200 + + Removing whitespaces in all files at EOL and EOF. + +commit f59157e06561c525605279145057361afa721042 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 23:48:56 2008 +0200 + + Adding Debians dosfslabel.8 manpage from Francois Wendling + <frwendling@free.fr>. + +commit c1bacab212d2b7f6ea93914976cb60056ff8276d +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 18:36:04 2008 +0200 + + Updating version.h includes to new location of version.h file. + +commit 1dae9f522062037d3539cadf344e0359c644171f +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 18:19:36 2008 +0200 + + Removing old lsm file. + +commit d843bec0b987f5582fe048f70e42df18c34d3ae4 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 18:07:47 2008 +0200 + + Removing old cvsignore files. + +commit 77fddbc03016752286b26913c62b98f86ee63211 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 18:18:39 2008 +0200 + + Removing old build file. + +commit f3e7168fc9eb6f32a6c85021186d84944cefeba8 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 18:19:16 2008 +0200 + + Removing old GPL license files. + +commit 68089477036e97911791516ee2167286f26ff819 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 18:21:57 2008 +0200 + + Unifying dosfsck and mkdosfs Makefiles in common src/Makefile. + +commit 9432a02d6e7c38872d7b1042f1b8be1b24a57427 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 18:04:02 2008 +0200 + + Unifying dosfsck and mkdosfs sources in common src directory. + +commit 0c179b9ee47174d0f34d9fc796d540012740ac01 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 18:05:27 2008 +0200 + + Unifying dosfsck and mkdosfs manpages in common man directory. + +commit 2d246c28ba6cfd43be2e44b11283891d922f352b +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 18:12:29 2008 +0200 + + Unifying dosfsck and mkdosfs documents in common doc directory. + +commit e5b16990515d0214fd103dd8aa22ff6a3cda4b64 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 15:39:51 2008 +0200 + + Applying Gentoos dosfstools-2.11-preen.patch from Roy Marples + <uberlord@gentoo.org> to alias dosfsck -p to -a: + + * Map -p to -a for baselayout-2, #177514. + +commit 6a1d974251a9f9a142775ace3a8048149abfa90c +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 15:49:43 2008 +0200 + + Applying Gentoos dosfstools-2.11-build.patch from Mike Frysinger + <vapier@gentoo.org> to improve Makefile: + + * Respect user settings #157785/#157786 by Diego Petteno. + +commit 1ea49f00e61b554dc833d44e1a3617e923be667e +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 15:37:34 2008 +0200 + + Applying Gentoos dosfstools-2.11-verify-double-count-fix.patch from + Robin H. Johnson <robbat2@gentoo.org> to fix double count of files + during verification: + + * Don't double-count n_files during a verification pass. + Bugzilla: http://bugs.gentoo.org/show_bug.cgi?id=99845 + +commit 2d2f20b2c495fa620c7bb3ec5a0838b08f65ab05 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 15:33:36 2008 +0200 + + Applying Gentoos dosfstools-2.11-fat32size.patch from Mike Frysinger + <vapier@gentoo.org> to fix generation of filesystems on 256meg devices: + + * Fix generation of FAT filesystems on devices that are 256meg in size + Patch by Ulrich Mueller and accepted upstream + http://bugs.gentoo.org/112504 + +commit a86564a9317b2bf9f7734feacdce794f20af74a7 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 15:22:06 2008 +0200 + + Applying Suses dosfstools-2.11-unsupported-sector-size.patch from Petr + Gajdos <pgajdos@suse.cz> to add sector size warning: + + * added warning for creation msdos on filesystem with sector size + greater than 4096 [fate#303325] + +commit 8171e51f4e02bd9f92bb515ca7896d3cb1b564b5 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 15:18:35 2008 +0200 + + Applying Suses dosfstools-2.11-mkdosfs-geo0.diff from Ludwig Nussel + <lnussel@suse.de> to fix handling of zero heads and sectors: + + * the HDIO_GETGEO ioctl works on device mapper devices but returns + zero heads and sectors. Therefore let's a) assume dummy values in + that case in mkdosfs and b) don't consider such fat file systems as + invalid in dosfsck. The Linux kernel accepts them anyways. + +commit db887df619f4e995db0ab112334f31464a03fa0e +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 15:15:40 2008 +0200 + + Applying Suses dosfstools-2.11-linuxfs.patch from Ruediger Oertel + <ro@suse.de> to not include linux/fs.h. + +commit 7fe3fa643494b26962d542fac38d988ac60f8c09 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 15:11:50 2008 +0200 + + Applying Fedoras dosfstools-2.11-assumeKernel26.patch from Peter Vrabec + <pvrabec@redhat.com> to remove linux 2.6 conditionals: + + * LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) does not work with + glibc-kernheaders-2.4-9.1.94 + +commit 90c1c93c100722a03e48be51b1312fe65c1cb156 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 15:05:00 2008 +0200 + + Applying Debians 99-conglomeration.dpatch (no other information + available). + +commit bb6541bf4735e3a7f1c71b4722c6d03bb4549eea +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:26:41 2008 +0200 + + Applying Debians 15-manpage-files.dpatch from Daniel Baumann + <daniel@debian.org> to improve dosfsck manpage: + + * Lists fsckNNNN.rec files in FILES section (Closes: #444596). + +commit 49282165866be19d3bc54a3f4bdee2cf3a63ba6c +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:34:42 2008 +0200 + + Applying Debians 13-getopt.dpatch from Adonikam Virgo + <adonikam@virgonet.org> to fix mkdosfs getopt: + + * Fixes backup sector getopt (Closes: #232387, #479794). + +commit c32e44b85f4eac6f6a94bd620eea4abba257042a +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:34:17 2008 +0200 + + Applying Debians 12-zero-slot.dpatch by Karl Tomlinson + <karlt@karlt.net> to fix dosfsck zero slot crashes: + + * Fixes crashes due to zero slot numbers causing a negative offset in + the call to copy_lfn_part in lfn_add_slot. On amd64 this results in + a SIGSEGV in copy_lfn_part. On x86 the result is heap corruption + and thus sometimes a SIGSEGV or double free abort later. (Closes: + #152550, #353198, #356377, #401798). + +commit 370847af533e628aa9e38710e6d50af09f2b71ba +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:33:54 2008 +0200 + + Applying Debians 11-memory-efficiency.dpatch from Eero Tamminen + <eero.tamminen@nokia.com> to improve dosfsck memory efficiency: + + * Improves memory efficiency when checking filesystems. + +commit 28da9f286a52acec7df7ad06cb0679e5f828e7f3 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:33:28 2008 +0200 + + Applying Debians 10-manpage-synopsis.dpatch from Daniel Baumann + <daniel@debian.org> to fix manpage synopsis: + + * List alternative binary names in manpage synopsis (Closes: #284983). + +commit f253073021551c9b58d0f2ac262deb3c1b950b06 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:32:46 2008 +0200 + + Applying Debians 09-manpage-fat32.dpatch from Daniel Baumann + <daniel@debian.org> to improve mkdosfs manpage: + + * Don't claim that FAT32 is not choosed automatically (Closes: + #414183). + +commit f37c07aec3972cfc0db374d544ee3b27c0b4b20b +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:32:23 2008 +0200 + + Applying Debians 08-manpage-drop.dpatch from Daniel Baumann + <daniel@debian.org> to improve dosfsck manpage: + + * Don't use confusing word 'drop' when 'delete' is meant (Closes: + #134100). + +commit 3f970c65586da2f44d2a49b639e89341bbaf1fba +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:31:50 2008 +0200 + + Applying Debians 07-manpage-spelling.dpatch from Justin Pryzby + <justinpryzby@users.sourceforge.net> to fix mkdosfs manpage typos. + +commit 18678ba5f3a10c2a54ffee735651d7a265ae7d54 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:30:31 2008 +0200 + + Applying Suses dosfstools-2.11_determine-sector-size.patch from Petr + Gajdos <pgajdos@suse.cz> to determine mkdosfs sector size automatically: + + * determine sector size of device automatically or if -S parameter + present, verify, that it's not under physical sector size + +commit 29753931b078856d78f473cfb6273e111a26891e +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:30:03 2008 +0200 + + Applying Suses dosfstools-2.11-o_excl.patch from Pavol Rusnak + <prusnak@suse.cz> to use O_EXCL in mkdosfs: + + * mkdosfs now opens device with O_EXCL [#238687] + +commit 16bb7b09ad9eaf0fe37a732cabcdbdf975b77d3e +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 14:29:36 2008 +0200 + + Applying Debians 04-unaligned-memory.dpatch from Khalid Aziz + <khalid_aziz@hp.com> to fix dosfsck unaligned memory accesses: + + * Fix unaligned memory accesses which cause warnings to appear + everytime the elilo bootloader script runs. This has led a number + of users to believe their install has failed (Closes: #258839). + +commit 1298cc8f37eaa27ca542b8b7186ea5a47a63cd7e +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 13:47:40 2008 +0200 + + Applying Fedoras dosfstools-2.11-label.patch from Jeremy Katz + <katzj@redhat.com> to add dosfslabel (originally by Peter Jones). + +commit d23890e1d89770d6d2ba58362c2fc4ebafbde15c +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 13:41:14 2008 +0200 + + Applying Fedoras dosfstools-2.11-fortify.patch from Jakub Jelinek + <jakub@redhat.com> to make it build with -D_FORTIFY_SOURCE=2: + + * This violates -D_FORTIFY_SOURCE=2 (which is stricter than C + standard), but isn't actually any buffer overflow. But using memcpy + is more efficient anyway. + +commit 7dbd82000e59246c1c2f8c280c4491259e10a767 +Author: Daniel Baumann <daniel@debian.org> +Date: Fri Sep 26 13:40:47 2008 +0200 + + Applying Fedoras dosfstools-2.7-argfix.patch (no other information + available). + +commit 88f3b3139c72ac11cb3dd3f5afa8dbb2198a8de5 +Author: Daniel Baumann <daniel@debian.org> +Date: Thu Jun 26 12:45:36 2008 +0200 + + Adding upstream version 2.11. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..050b750 --- /dev/null +++ b/Makefile @@ -0,0 +1,112 @@ +# Makefile +# +# Copyright (C) 2008 Daniel Baumann <daniel@debian.org> +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# +# On Debian systems, the complete text of the GNU General Public License +# can be found in /usr/share/common-licenses/GPL-3 file. + +DESTDIR = +PREFIX = /usr/local +SBINDIR = $(PREFIX)/sbin +DOCDIR = $(PREFIX)/share/doc +MANDIR = $(PREFIX)/share/man + +#OPTFLAGS = -O2 -fomit-frame-pointer -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 +OPTFLAGS = -O2 -fomit-frame-pointer $(shell getconf LFS_CFLAGS) +#WARNFLAGS = -Wall -pedantic -std=c99 +WARNFLAGS = -Wall +DEBUGFLAGS = -g +CFLAGS += $(OPTFLAGS) $(WARNFLAGS) $(DEBUGFLAGS) + +VPATH = src + +all: build + +build: dosfsck dosfslabel mkdosfs + +dosfsck: boot.o check.o common.o fat.o file.o io.o lfn.o dosfsck.o + +dosfslabel: boot.o check.o common.o fat.o file.o io.o lfn.o dosfslabel.o + +mkdosfs: mkdosfs.o + +rebuild: distclean build + +install: install-bin install-doc install-man + +install-bin: build + install -d -m 0755 $(DESTDIR)/$(SBINDIR) + install -m 0755 dosfsck dosfslabel mkdosfs $(DESTDIR)/$(SBINDIR) + + ln -sf dosfsck $(DESTDIR)/$(SBINDIR)/fsck.msdos + ln -sf dosfsck $(DESTDIR)/$(SBINDIR)/fsck.vfat + ln -sf mkdosfs $(DESTDIR)/$(SBINDIR)/mkfs.msdos + ln -sf mkdosfs $(DESTDIR)/$(SBINDIR)/mkfs.vfat + +install-doc: + install -d -m 0755 $(DESTDIR)/$(DOCDIR)/dosfstools + install -p -m 0644 ChangeLog doc/* $(DESTDIR)/$(DOCDIR)/dosfstools + +install-man: + install -d -m 0755 $(DESTDIR)/$(MANDIR)/man8 + install -p -m 0644 man/*.8 $(DESTDIR)/$(MANDIR)/man8 + + ln -sf dosfsck.8 $(DESTDIR)/$(MANDIR)/man8/fsck.msdos.8 + ln -sf dosfsck.8 $(DESTDIR)/$(MANDIR)/man8/fsck.vfat.8 + ln -sf mkdosfs.8 $(DESTDIR)/$(MANDIR)/man8/mkfs.msdos.8 + ln -sf mkdosfs.8 $(DESTDIR)/$(MANDIR)/man8/mkfs.vfat.8 + +uninstall: uninstall-bin uninstall-doc uninstall-man + +uninstall-bin: + rm -f $(DESTDIR)/$(SBINDIR)/dosfsck + rm -f $(DESTDIR)/$(SBINDIR)/dosfslabel + rm -f $(DESTDIR)/$(SBINDIR)/mkdosfs + + rm -f $(DESTDIR)/$(SBINDIR)/fsck.msdos + rm -f $(DESTDIR)/$(SBINDIR)/fsck.vfat + rm -f $(DESTDIR)/$(SBINDIR)/mkfs.msdos + rm -f $(DESTDIR)/$(SBINDIR)/mkfs.vfat + + rmdir --ignore-fail-on-non-empty $(DESTDIR)/$(SBINDIR) + +uninstall-doc: + rm -rf $(DESTDIR)/$(DOCDIR)/dosfstools + + rmdir --ignore-fail-on-non-empty $(DESTDIR)/$(DOCDIR) + +uninstall-man: + rm -f $(DESTDIR)/$(MANDIR)/man8/dosfsck.8 + rm -f $(DESTDIR)/$(MANDIR)/man8/dosfslabel.8 + rm -f $(DESTDIR)/$(MANDIR)/man8/mkdosfs.8 + + rm -f $(DESTDIR)/$(MANDIR)/man8/fsck.msdos.8 + rm -f $(DESTDIR)/$(MANDIR)/man8/fsck.vfat.8 + rm -f $(DESTDIR)/$(MANDIR)/man8/mkfs.msdos.8 + rm -f $(DESTDIR)/$(MANDIR)/man8/mkfs.vfat.8 + + rmdir --ignore-fail-on-non-empty $(DESTDIR)/$(MANDIR)/man8 + rmdir --ignore-fail-on-non-empty $(DESTDIR)/$(MANDIR) + +reinstall: distclean install + +clean: + rm -f *.o + +distclean: clean + rm -f dosfsck dosfslabel mkdosfs + +.PHONY: build rebuild install install-bin install-doc install-man uninstall uninstall-bin uninstall-doc uninstall-man reinstall clean distclean diff --git a/doc/ANNOUNCE.mkdosfs b/doc/ANNOUNCE.mkdosfs new file mode 100644 index 0000000..1f02ea2 --- /dev/null +++ b/doc/ANNOUNCE.mkdosfs @@ -0,0 +1,41 @@ +Announcing the release of mkdosfs version 0.3b (Yggdrasil) + +It seems I didn't get the bug completely fixed in 0.3a. Some +borderline cases would still allocate too many sectors for the FAT. +Again, nothing to worry about, just a nitpick -- this one would only +in certain cases add one sector per FAT. + +Announcing the release of mkdosfs version 0.3a (Yggdrasil) + +Fixed a bug which would cause too many sectors to be reserved for the +FAT (filesystem will still work fine, but have slightly less space +available). + +Announcing the release of mkdosfs version 0.3 (Yggdrasil) + +This version correctly handles even very large filesystems, and +properly supports the modern (3.3+) DOS bootsector format, including a +message printed on boot attempts. + +Peter Anvin +Yggdrasil Computing, Inc. +hpa@yggdrasil.com + + -------------- + +Announcing the release of mkdosfs version 0.2 + + +I've just uploaded mkdosfs to sunsite.unc.edu. It works in a similar way +to Remy Card's mke2fs, but creates an MS-DOS file system. + +The filename is mkdosfs-0.2.tar.gz. + +This second release should fix a small bug that could lead to FAT sizes that +Linux's dosfs would accept but MS-DOS wouldn't. + +The archive contains a manual page, binary and source versions. + + +Dave Hudson +dave@humbug.demon.co.uk diff --git a/doc/ChangeLog.dosfsck b/doc/ChangeLog.dosfsck new file mode 100644 index 0000000..f628ac2 --- /dev/null +++ b/doc/ChangeLog.dosfsck @@ -0,0 +1,10 @@ +Changes from version 0 to 1 +=========================== + + - fixed an off-by-two error in check.c:check_file + - fixed marking clusters bad in fat.c:set_fat + - fat.c:reclaim_free was also reclaiming bad clusters. + - fixed many incorrect byte sex conversions in check.c and fat.c + - -t and -w now require -a or -r + - added option -d to drop files. + - added option -u to try to "undelete" non-directory files. diff --git a/doc/ChangeLog.dosfstools-2.x b/doc/ChangeLog.dosfstools-2.x new file mode 100644 index 0000000..7ed9efe --- /dev/null +++ b/doc/ChangeLog.dosfstools-2.x @@ -0,0 +1,161 @@ +version 2.11 +============ + + - all: don't use own llseek() anymore, glibc lseek() does everything we need + - dosfsck: lfn.c: avoid segfault + - dosfsck: check.c, lfn.c: check for orphaned LFN slots + - dosfsck: check.c alloc_rootdir_entry(): set owner of newly alloced clusters + - dosfsck: dosfsck.h: better use <byteswap.h> for byte swapping + - dosfsck: io.c: added code for real DOS + - mkdosfs: raised FAT12_THRESHOLD from 4078 to 4085, introduced MIN_CLUST_32 + - mkdosfs: fix loop device size + - mkdosfs: by default, use FAT32 on devices >= 512MB + - mkdosfs: fix a memory leak (blank_sector) + - mkdosfs: fix parsing of number of blocks on command line, so that numbers + >2G can be used + - mkdosfs: add 'b' to getopt() string so this option can be used :) + - mkdosfs: fix parsing of -i arg (should be unsigned) + - mkdosfs: change default permissions of created images (-C) to 0666 & ~umask + - mkdosfs: relax geometry check: if HDIO_GETGEO fails, print a warning and + default to H=255,S=63 + - dosfsck: new option -n (no-op): just check non-interactively, but + don't write anything to filesystem + - A few #include changes to support compilation with linux 2.6 + headers (thanks to Jim Gifford <jim@jg555.com>) + - dosfsck: remove directory entries pointing to start cluster 0, if they're + not "." or ".." entries that should actually point to the root dir + (pointed out by Thomas Winkler <twinkler@sysgo.de>) + - mkdosfs: new option -h to set number of hidden sectors + (thanks to Godwin Stewart <gstewart@spamcop.net>) + - all: updated my mail address everywhere... + +version 2.10 +============ + + - dosfsck: various 64-bit fixes and removed some warnings by Michal + Cihar <mcihar@suse.cz> + - mkdosfs: better error message if called without parameters (also + suggested by Michal) + +version 2.9 +=========== + + - dosfsck: if EOF from stdin, exit with error code + - dosfsck: Fix potential for "Internal error: next_cluster on bad cluster". + - dosfsck: When clearing long file names, don't overwrite the dir + entries with all zeros, but put 0xe5 into the first byte. + Otherwise, some OSes stop reading the directory at that point... + - dosfsck: in statistics printed by -v, fix 32bit overflow in number + of data bytes. + - dosfsck: fix an potential overflow in "too many clusters" check + - dosfsck: fix 64bit problem in fat.c (Debian bug #152769) + - dosfsck: allow FAT size > 32MB. + - dosfsck: allow for only one FAT + - dosfsck: with -v, also check that last sector of the filesystem can + be read (in case a partition is smaller than the fs thinks) + - mkdosfs: add note in manpage that creating bootable filesystems is + not supported. + - mkdosfs: better error message with pointer to -I if target is a + full-disk device. + +version 2.8 +=========== + + - dosfsck: Fixed endless loop whenever a volume label was present. + +version 2.7 +=========== + + - dosfsck: Don't check volume label for bad characters, everything + seems to be allowed there... Also ignore duplicate names where one of + them is a volume label. + +version 2.6 +=========== + + - mkdosfs: Added correct heads definition for 2.88M floppies if not + created via loopback. + - dosfsck: If boot sector and its backup are different (FAT32), offer + to write the backup to sector 0. (tnx to Pavel Roskin for this) + - For 64 bit alpha, struct bootsector in dosfsck.h must be defined + with __attribute__((packed)). + - mkdosfs now actually accepts -R option. (tnx to David Kerrawn) + - Fixed typo in dosfsck boot.c (recognition of boot signature in FSINFO) + - Various compilation fixes for 2.4 kernel headers and for ia64. + +version 2.5 +=========== + + - The llseek() implementation for alpha didn't really work; fixed it. + +version 2.4 +=========== + + - Fix compiling problem on alpha (made a silly typo...) + +version 2.3 +=========== + + - mkdosfs: Fixed usage message (printed only "bad address"). + - both: made man pages and usage statements more consistent. + - both: fix llseek function for alpha. + - dosfsck: fix reading of unaligned fields in boot sector for alpha. + - dosfsck: fixed renaming of files (extension wasn't really written). + +version 2.2 +=========== + + - Added dosfsck/COPYING, putting dosfsck officially under GPL (Werner + and I agree that it should be GPL). + - mkdosfs: Allow creation of a 16 bit FAT on filesystems that are too + small for it if the user explicitly selected FAT16 (but a warning + is printed). Formerly, you got the misleading error message "make + the fs a bit smaller". + - dosfsck: new option -y as synonym for -y; for compability with + other fs checkers, which also accept this option. + - dosfsck: Now prints messages similar to e2fsck: at start version + and feature list; at end number of files (and directories) and + number of used/total clusters. This makes the printouts of *fsck at + boot time nicer. + - dosfsck: -a (auto repair) now turns on -f (salvage files), too. -a + should act as non-destructive as possible, so lost clusters should + be assigned to files. Otherwise the data in them might be + overwritten later. + - dosfsck: Don't drop a directory with lots of bad entries in + auto-repair mode for the same reason as above. + - dosfsck: avoid deleting the whole FAT32 root dir if something is + wrong with it (bad start cluster or the like). + - general: also create symlinks {mkfs,fsck}.vfat.8 to the respective + real man pages. + +version 2.1 +=========== + + - Fix some forgotten loff_t's for filesystems > 4GB. (Thanks to + <ki@kretz.co.at>). + - Fix typo in mkdosfs manpage. + - Removed inclusion of <linux/loop.h> from mkdosfs.c; it's unnecessary and + caused problems in some environments. + - Fix condition when to expect . and .. entries in a directory. (Was + wrong for non-FAT32 if first entry in root dir was a directory also.) + - Also create mkfs.vfat and fsck.vfat symlinks, so that also + filesystems listed with type "vfat" in /etc/fstab can be + automatically checked. + +version 2.0 +=========== + + - merge of mkdosfs and dosfstools in one package + - new maintainer: Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + - FAT32 support in both mkdosfs and dosfsck + - VFAT (long filename) support in dosfsck + - Support for Atari variant of MS-DOS filesystem in both tools + - Working support for big-endian systems in both tools + - Better support for loop devices in mkdosfs: usual floppy sizes are + detected and media byte etc. set accordingly; if loop fs has no + standard floppy size, use hd params + (mainly by Giuliano Procida <gpp10@cus.cam.ac.uk>) + - Removed lots of gcc warnings + - Fixed some minor calculation bugs in mkdosfs. + +For change logs previous to 2.0, see the CHANGES files in the subdirectories. diff --git a/doc/ChangeLog.mkdosfs b/doc/ChangeLog.mkdosfs new file mode 100644 index 0000000..e39d9d6 --- /dev/null +++ b/doc/ChangeLog.mkdosfs @@ -0,0 +1,18 @@ +28th January 1995 H. Peter Anvin (hpa@yggdrasil.com) + + Better algorithm to select cluster sizes on large filesystems. + Added bogus boot sector code that on attempts to boot prints a + message (which can be chosen at mkdosfs time) and lets the user + press any key and try again. Corrected support for 1.2 Mb + floppies. mkdosfs now generates the extended bootsector + (superblock) format of DOS 3.3+, with support for volume ID's and + volume labels (volume labels are also written to the root + directory, as they should). + +18th February 1994 Dave Hudson (dave@humbug.demon.co.uk) + + Released version 0.2 - clears a bug in the FAT sizing code. + +1st September 1993 Dave Hudson (dave@humbug.demon.co.uk) + + Released version 0.1 - ALPHA release of mkdosfs diff --git a/doc/README.dosfsck b/doc/README.dosfsck new file mode 100644 index 0000000..7b351aa --- /dev/null +++ b/doc/README.dosfsck @@ -0,0 +1,60 @@ +dosfsck, version 1 +================== + +WARNING: This is ALPHA test software. Use at your own risk. + +dosfsck is the Linux equivalent of PC/MS-DOS' CHKDSK. It checks the +consistency of PC/MS-DOS file systems and optionally tries to repair +them. The tests dosfsck performs are described in the man page. + +dosfsck needs header files from dosfs.9 (or later) to compile. + +Before using dosfsck to repair a file system that contains data of any +value, you should verify that dosfsck is able to correct all reported +errors. (Except fatal errors and those reported as unfixable, of +course.) In order to do this, run it with the -V option, e.g. + + dosfsck -V /dev/sda1 (automatic check) +or dosfsck -V -r /dev/sda1 (interactive check and repair) + +dosfsck will perform two passes: in the first pass, inconsistencies are +detected and a list of changes to correct the problems is generated. In +the second pass, those changes are applied whenever dosfsck reads data +from disk. Hence no fixable errors should be reported in the second +pass if the first pass was successful. + +Please notify the author if fixable errors are reported in the second +pass. + +After verifying that dosfsck appears to be able to perform the desired +operations, either confirm that you want the changes to be performed +(if dosfsck was started with -r) or re-run dosfsck with the -a option +(if it was started without -r). + +Please send bug reports, comments, flames, etc. to +almesber@nessie.cs.id.ethz.ch or almesber@bernina.ethz.ch + +- Werner + +FAT32 and LFN support +===================== + +I've finally implemented some of the new features of MS-DOS +filesystems: FAT32 and long filenames. + +FAT32 is automatically detected and of course the different FAT +structure is handled. (Internally many changes were needed, so 32 bit +variables for all cluster numbers and 64 bit vars for offsets inside +the filesystem.) New checks for FAT32 are most notably on the backup +boot sector and the new info sector. Also the possibility that the +root directory resides in a cluster chain (instead of in a static +area) on FAT32 is handled. + +dosfscheck also knows about VFAT long filenames now. It parses those +names and uses them in listings etc. when available. There are also +some checks on the (cruel) structure of how LFNs are stored and some +attempts to fix problems. + +- Roman <roman@hodek.net> + +BTW, version 2 isn't ALPHA anymore :-) diff --git a/doc/README.dosfstools-2.x b/doc/README.dosfstools-2.x new file mode 100644 index 0000000..5fb00ed --- /dev/null +++ b/doc/README.dosfstools-2.x @@ -0,0 +1,60 @@ + +Atari format support +==================== + +Both mkdosfs and dosfsck now can also handle the Atari variation of +the MS-DOS filesystem format. The Atari format has some minor +differences, some caused by the different machine architecture (m68k), +some being "historic" (Atari didn't change some things that M$ +changed). + +Both tools automatically select Atari format if they run on an Atari. +Additionally the -A switch toggles between Atari and MS-DOS format. +I.e., on an Atari it selects plain DOS format, on any other machine it +switches to Atari format. + +The differences are in detail: + + - Atari TOS doesn't like cluster sizes != 2, so the usual solution + for bigger partitions was to increase the logical sector size. So + mkdosfs can handle sector sizes != 512 now, you can also manually + select it with the -S option. On filesystems larger than approx. 32 + MB, the sector size is automatically increased (stead of the + cluster size) to make the filesystem fit. mkdosfs will always use 2 + sectors per cluster (also with the floppy standard configurations), + except when directed otherwise on the command line. + + - From the docs, all values between 0xfff8 and 0xffff in the FAT mark + an end-of-file. However, DOS usually uses 0xfff8 and Atari 0xffff. + This seems to be only an consmetic difference. At least TOS doesn't + complain about 0xffff EOF marks. Don't know what DOS thinks of + 0xfff8 :-) Anyway, both tools use the EOF mark common to the + system (DOS/Atari). + + - Something similar of the bad cluster marks: On Atari the FAT values + 0xfff0 to 0xfff7 are used for this, under DOS only 0xfff7 (the + others can be normal cluster numbers, allowing 7 more clusters :-) + However, both systems usually mark with 0xfff7. Just dosfsck has to + interpret 0xfff0...0xfff7 differently. + + - Some fields in the boot sector are interpreted differently. For + example, Atari has a disk serial number (used to aid disk change + detection) where DOS stores the system name; the 'hidden' field is + 32 bit for DOS, but 16 bit for Atari, and there's no 'total_sect' + field; the 12/16 bit FAT decision is different: it's not based on + the number of clusters, but always FAT12 on floppies and FAT16 on + hard disks. mkdosfs nows about these differences and constructs the + boot sector accordingly. + + - In dosfsck, the boot sector differences also have to known, to not + warn about things that are no error on Atari. In addition, most + Atari formatting tools fill the 'tracks' and 'heads' fields with 0 + for hard disks, because they're meaningless on SCSI disks (Atari + has/had no IDE). Due to this, the check that they should be + non-zero is switched off. + + - Under Atari TOS, some other characters are illegal in filenames: + '<', '>', '|', '"', and ':' are allowed, but all non-ASCII chars + (codes >= 128) are forbidden. + +- Roman <Roman.Hodek@informatik.uni-erlangen.de> diff --git a/doc/README.mkdosfs b/doc/README.mkdosfs new file mode 100644 index 0000000..ae93ada --- /dev/null +++ b/doc/README.mkdosfs @@ -0,0 +1,50 @@ +mkdosfs - Make DOS file system utilty. + + +I wrote this, partially to complement the dosfsck utility written by Werner +Almesberger (who graciously gave me some pointers when I asked for some +advice about writing this code), and also to avoid me having to boot DOS +just to create data partitions (I use Linux to back up DOS :-) ). + +The code is really derived from Remy Card's mke2fs utility - I used this as a +framework, although all of the file system specific stuff was removed and the +DOS stuff inserted. I believe originally mke2fs was based on Linus' mkfs +code, hence the acknowledgements in the source code. + +Neither Remy nor Linus have had any involvement with mkdosfs, so if there are +any bugs they're almost certainly "all my own work". + +The code has been available for ftp since 1st September 1993, and I have yet +to receive any bug reports from users. I don't know of any bugs, but if you +do find a bug or have any constructive comments, please mail me! + +The only bug I found with version 0.1 was an obscure fault that could lead +to an invalid (for MS-DOS, not Linux's dos fs) number of sectors used in the +file allocation table(s). + + +Dave Hudson +dave@humbug.demon.co.uk + + +FAT32 support +============= + +mkdosfs now can also create filesystems in the new FAT32 format. To do +this, give mkdosfs a "-F 32" option. FAT32 isn't selected +automatically (yet), even if very large clusters are needed with +FAT16. With FAT32 you have two additional options, -R to select the +number of reserved sectors (usually 32), and -b to select the location +of the backup boot sector (default 6). Of course such a backup is +created, as well as the new info sector. On FAT32, the root directory +is always created as a cluster chain. Sorry, there's no switch to +generate an old static root dir. + +One bigger bug fix besides FAT32 was to reject filesystems that need a +16 bit FAT to fit all possible clusters, but the bigger FAT needs some +more sectors, so the total number of clusters drop below the border +where MS-DOS expects a 12 bit FAT. So such filesystems would be FAT16, +but interpreted as FAT32 by DOS. The fix is to reduce filesystem size +a bit. + +- Roman <roman@hodek.net> diff --git a/doc/TODO.dosfstools-2.x b/doc/TODO.dosfstools-2.x new file mode 100644 index 0000000..dbc2de0 --- /dev/null +++ b/doc/TODO.dosfstools-2.x @@ -0,0 +1,14 @@ + -*- mode: indented-text -*- + + - dosfsck: Better checking of file times: ctime <= mtime <= atime + + - mkdosfs: If /etc/bootsect.dos (or similar) exists, use it as a + template for generating boot sectors. This way, you can, e.g., make + bootable DOS disks. + + Addendum: Don't know if that's so wise... There are really many + variants of DOS/Windows bootcode out in the wild, and the code is + proprietary, too. + + - dosfsck: read-only sector test (-t without -a or -r); just print + out errors. diff --git a/man/dosfsck.8 b/man/dosfsck.8 new file mode 100644 index 0000000..d363c68 --- /dev/null +++ b/man/dosfsck.8 @@ -0,0 +1,112 @@ +.TH DOSFSCK 8 "2010\-01\-31" "3.0.9" "check and repair MS\-DOS filesystems" + +.SH NAME +\fBdosfsck\fR \- check and repair MS\-DOS filesystems + +.SH SYNOPSIS +\fBdosfsck\fR|\fBfsck.msdos\fR|\fBfsck.vfat\fR [\-aAflnrtvVwy] [\-d \fIPATH\fR \-d\ \fI...\fR] [\-u\ \fIPATH\fR \-u \fI...\fR] \fIDEVICE\fR + +.SH DESCRIPTION +\fBdosfsck\fR verifies the consistency of MS\-DOS filesystems and optionally tries to repair them. +.PP +The following filesystem problems can be corrected (in this order): +.IP "*" 4 +FAT contains invalid cluster numbers. Cluster is changed to EOF. +.IP "*" 4 +File's cluster chain contains a loop. The loop is broken. +.IP "*" 4 +Bad clusters (read errors). The clusters are marked bad and they are removed from files owning them. This check is optional. +.IP "*" 4 +Directories with a large number of bad entries (probably corrupt). The directory can be deleted. +.IP "*" 4 +Files . and .. are non\-directories. They can be deleted or renamed. +.IP "*" 4 +Directories . and .. in root directory. They are deleted. +.IP "*" 4 +Bad filenames. They can be renamed. +.IP "*" 4 +Duplicate directory entries. They can be deleted or renamed. +.IP "*" 4 +Directories with non\-zero size field. Size is set to zero. +.IP "*" 4 +Directory . does not point to parent directory. The start pointer is adjusted. +.IP "*" 4 +Directory .. does not point to parent of parent directory. The start pointer is adjusted. +.IP "*" 4 +Start cluster number of a file is invalid. The file is truncated. +.IP "*" 4 +File contains bad or free clusters. The file is truncated. +.IP "*" 4 +File's cluster chain is longer than indicated by the size fields. The file is truncated. +.IP "*" 4 +Two or more files share the same cluster(s). All but one of the files are truncated. If the file being truncated is a directory file that has already been read, the filesystem check is restarted after truncation. +.IP "*" 4 +File's cluster chain is shorter than indicated by the size fields. The file is truncated. +.IP "*" 4 +Clusters are marked as used but are not owned by a file. They are marked as free. +.PP +Additionally, the following problems are detected, but not repaired: +.IP "*" 4 +Invalid parameters in boot sector. +.IP "*" 4 +Absence of . and .. entries in non\-root directories +.PP +When \fBdosfsck\fR checks a filesystem, it accumulates all changes in memory and performs them only after all checks are complete. This can be disabled with the \fB\-w\fR option. + +.SH OPTIONS +.IP "\fB\-a\fR" 4 +Automatically repair the filesystem. No user intervention is necessary. Whenever there is more than one method to solve a problem, the least destructive approach is used. +.IP "\fB\-A\fR" 4 +Use Atari variation of the MS\-DOS filesystem. This is default if \fBdosfsck\fR is run on an Atari, then this option turns off Atari format. There are some minor differences in Atari format: Some boot sector fields are interpreted slightly different, and the special FAT entries for end\-of\-file and bad cluster can be different. Under MS\-DOS 0xfff8 is used for EOF and Atari employs 0xffff by default, but both systems recognize all values from 0xfff8...0xffff as end\-of\-file. MS\-DOS uses only 0xfff7 for bad clusters, where on Atari values 0xfff0...0xfff7 are for this purpose (but the standard value is still 0xfff7). +.IP "\fB\-d\fR" 4 +Delete the specified file. If more that one file with that name exists, the first one is deleted. +.IP "\fB\-f\fR" 4 +Salvage unused cluster chains to files. By default, unused clusters are added to the free disk space except in auto mode (\fB\-a\fR). +.IP "\fB\-l\fR" 4 +List path names of files being processed. +.IP "\fB\-n\fR" 4 +No\-operation mode: non\-interactively check for errors, but don't write +anything to the filesystem. +.IP "\fB\-r\fR" 4 +Interactively repair the filesystem. The user is asked for advice whenever +there is more than one approach to fix an inconsistency. +.IP "\fB\-t\fR" 4 +Mark unreadable clusters as bad. +.IP "\fB\-u\fR" 4 +Try to undelete the specified file. \fBdosfsck\fR tries to allocate a chain of contiguous unallocated clusters beginning with the start cluster of the undeleted file. +.IP "\fB\-v\fR" 4 +Verbose mode. Generates slightly more output. +.IP "\fB\-V\fR" 4 +Perform a verification pass. The filesystem check is repeated after the first run. The second pass should never report any fixable errors. It may take considerably longer than the first pass, because the first pass may have generated long list of modifications that have to be scanned for each disk read. +.IP "\fB\-w\fR" 4 +Write changes to disk immediately. +.IP "\fB\-y\fR" 4 +Same as \fB\-a\fR (automatically repair filesystem) for compatibility with other fsck tools. +.PP +\fBNote:\fR If \fB\-a\fR and \fB\-r\fR are absent, the filesystem is only checked, but not repaired. + +.SH "EXIT STATUS" +.IP "0" 4 +No recoverable errors have been detected. +.IP "1" 4 +Recoverable errors have been detected or \fBdosfsck\fR has discovered an internal inconsistency. +.IP "2" 4 +Usage error. \fBdosfsck\fR did not access the filesystem. + +.SH FILES +.IP "fsck0000.rec, fsck0001.rec, ..." 4 +When recovering from a corrupted filesystem, \fBdosfsck\fR dumps recovered data into files named 'fsckNNNN.rec' in the top level directory of the filesystem. + +.SH BUGS +Does not create . and .. files where necessary. Does not remove entirely empty directories. Should give more diagnostic messages. Undeleting files should use a more sophisticated algorithm. + +.SH SEE ALSO +\fBdosfslabel\fR(8) +.br +\fBmkdosfs\fR(8) + +.SH HOMEPAGE +More information about \fBdosfsck\fR and \fBdosfstools\fR can be found at <\fIhttp://www.daniel\-baumann.ch/software/dosfstools/\fR>. + +.SH AUTHORS +\fBdosfstools\fR were written by Werner Almesberger <\fIwerner.almesberger@lrc.di.epfl.ch\fR>, Roman Hodek <\fIRoman.Hodek@informatik.uni-erlangen.de\fR>, and others. The current maintainer is Daniel Baumann <\fIdaniel@debian.org\fR>. diff --git a/man/dosfslabel.8 b/man/dosfslabel.8 new file mode 100644 index 0000000..293ff5d --- /dev/null +++ b/man/dosfslabel.8 @@ -0,0 +1,29 @@ +.TH DOSFSLABEL 8 "2010\-01\-31" "3.0.9" "set or get MS\-DOS filesystem label" + +.SH NAME +\fBdosfslabel\fR \- set or get MS\-DOS filesystem label + +.SH SYNOPSIS +\fBdosfslabel\fR \fIDEVICE\fR [\fILABEL\fR] + +.SH DESCRIPTION +\fBdosfslabel\fR set or gets a MS\-DOS filesystem label from a given device. +.PP +If the label is omitted, then the label name of the specified device is written on the standard output. A label can't be longer than 11 characters. + +.SH OPTIONS +.IP "\fB\-h\fR, \fB\-\-help\fR" 4 +Displays a help message. +.IP "\fB\-V\fR, \fB\-\-version\fR" 4 +Shows version. + +.SH SEE ALSO +\fBdosfsck\fR(8) +.br +\fBmkdosfs\fR(8) + +.SH HOMEPAGE +More information about \fBdosfsck\fR and \fBdosfstools\fR can be found at <\fIhttp://www.daniel\-baumann.ch/software/dosfstools/\fR>. + +.SH AUTHORS +\fBdosfstools\fR were written by Werner Almesberger <\fIwerner.almesberger@lrc.di.epfl.ch\fR>, Roman Hodek <\fIRoman.Hodek@informatik.uni-erlangen.de\fR>, and others. The current maintainer is Daniel Baumann <\fIdaniel@debian.org\fR>. diff --git a/man/mkdosfs.8 b/man/mkdosfs.8 new file mode 100644 index 0000000..9100c39 --- /dev/null +++ b/man/mkdosfs.8 @@ -0,0 +1,224 @@ +.\" -*- nroff -*- +.TH MKDOSFS 8 "5 May 1995" "Version 2.x" +.SH NAME +.B mkdosfs +\- create an MS-DOS file system under Linux +.SH SYNOPSIS +.B mkdosfs|mkfs.msdos|mkfs.vfat +[ +.B \-a +] +[ +.B \-A +] +[ +.B \-b +.I sector-of-backup +] +[ +.B \-c +] +[ +.B \-l +.I filename +] +[ +.B \-C +] +[ +.B \-f +.I number-of-FATs +] +[ +.B \-F +.I FAT-size +] +[ +.B \-h +.I number-of-hidden-sectors +] +[ +.B \-i +.I volume-id +] +.RB [ " \-I " ] +[ +.B \-m +.I message-file +] +[ +.B \-n +.I volume-name +] +[ +.B \-r +.I root-dir-entries +] +[ +.B \-R +.I number-of-reserved-sectors +] +[ +.B \-s +.I sectors-per-cluster +] +[ +.B \-S +.I logical-sector-size +] +[ +.B \-v +] +.I device +[ +.I block-count +] +.SH DESCRIPTION +.B mkdosfs +is used to create an MS-DOS file system under Linux on a device (usually +a disk partition). +.I device +is the special file corresponding to the device (e.g /dev/hdXX). +.I block-count +is the number of blocks on the device. If omitted, +.B mkdosfs +automatically determines the file system size. +.SH OPTIONS +.TP +.B \-a +Normally, for any filesystem except very small ones, \fBmkdosfs\fP +will align all the data structures to cluster size, to make sure that +as long as the partition is properly aligned, so will all the data +structures in the filesystem. This option disables alignment; this +may provide a handful of additional clusters of storage at the expense +of a significant performance degradation on RAIDs, flash media or +large-sector hard disks. +.TP +.B \-A +Use Atari variation of the MS-DOS file system. This is default if +\fBmkdosfs\fP is run on an Atari, then this option turns off Atari +format. There are some differences when using Atari format: If not +directed otherwise by the user, \fBmkdosfs\fP will always use 2 +sectors per cluster, since GEMDOS doesn't like other values very much. +It will also obey the maximum number of sectors GEMDOS can handle. +Larger file systems are managed by raising the logical sector size. +Under Atari format, an Atari-compatible serial number for the +file system is generated, and a 12 bit FAT is used only for file systems +that have one of the usual floppy sizes (720k, 1.2M, 1.44M, 2.88M), a +16 bit FAT otherwise. This can be overridden with the \fB\-F\fP +option. Some PC-specific boot sector fields aren't written, and a boot +message (option \fB\-m\fP) is ignored. +.TP +.BI \-b " sector-of-backup " +Selects the location of the backup boot sector for FAT32. Default +depends on number of reserved sectors, but usually is sector 6. The +backup must be within the range of reserved sectors. +.TP +.B \-c +Check the device for bad blocks before creating the file system. +.TP +.B \-C +Create the file given as \fIdevice\fP on the command line, and write +the to-be-created file system to it. This can be used to create the +new file system in a file instead of on a real device, and to avoid +using \fBdd\fP in advance to create a file of appropriate size. With +this option, the \fIblock-count\fP must be given, because otherwise +the intended size of the file system wouldn't be known. The file +created is a sparse file, which actually only contains the meta-data +areas (boot sector, FATs, and root directory). The data portions won't +be stored on the disk, but the file nevertheless will have the +correct size. The resulting file can be copied later to a floppy disk +or other device, or mounted through a loop device. +.TP +.BI \-f " number-of-FATs" +Specify the number of file allocation tables in the file system. The +default is 2. Currently the Linux MS-DOS file system does not support +more than 2 FATs. +.TP +.BI \-F " FAT-size" +Specifies the type of file allocation tables used (12, 16 or 32 bit). +If nothing is specified, \fBmkdosfs\fR will automatically select +between 12, 16 and 32 bit, whatever fits better for the file system size. +.TP +.BI \-h " number-of-hidden-sectors " +Select the number of hidden sectors in the volume. Apparently some +digital cameras get indigestion if you feed them a CF card without +such hidden sectors, this option allows you to satisfy them. Assumes +\'0\' if no value is given on the command line. +.TP +.I \-i " volume-id" +Sets the volume ID of the newly created file system; +.I volume-id +is a 32-bit hexadecimal number (for example, 2e24ec82). The default +is a number which depends on the file system creation time. +.TP +.B \-I +It is typical for fixed disk devices to be partitioned so, by default, you are +not permitted to create a filesystem across the entire device. +.B mkdosfs +will complain and tell you that it refuses to work. This is different +when using MO disks. One doesn't always need partitions on MO disks. +The file system can go directly to the whole disk. Under other OSes +this is known as the 'superfloppy' format. + +This switch will force +.B mkdosfs +to work properly. +.TP +.BI \-l " filename" +Read the bad blocks list from +.IR filename . +.TP +.BI \-m " message-file" +Sets the message the user receives on attempts to boot this file system +without having properly installed an operating system. The message +file must not exceed 418 bytes once line feeds have been converted to +carriage return-line feed combinations, and tabs have been expanded. +If the filename is a hyphen (-), the text is taken from standard input. +.TP +.BI \-n " volume-name" +Sets the volume name (label) of the file system. The volume name can +be up to 11 characters long. The default is no label. +.TP +.BI \-r " root-dir-entries" +Select the number of entries available in the root directory. The +default is 112 or 224 for floppies and 512 for hard disks. +.TP +.BI \-R " number-of-reserved-sectors " +Select the number of reserved sectors. With FAT32 format at least 2 +reserved sectors are needed, the default is 32. Otherwise the default +is 1 (only the boot sector). +.TP +.BI \-s " sectors-per-cluster" +Specify the number of disk sectors per cluster. Must be a power of 2, +i.e. 1, 2, 4, 8, ... 128. +.TP +.BI \-S " logical-sector-size" +Specify the number of bytes per logical sector. Must be a power of 2 +and greater than or equal to 512, i.e. 512, 1024, 2048, 4096, 8192, +16384, or 32768. +.TP +.B \-v +Verbose execution. +.SH BUGS +.B mkdosfs +can not create boot-able file systems. This isn't as easy as you might +think at first glance for various reasons and has been discussed a lot +already. +.B mkdosfs +simply will not support it ;) +.SH AUTHOR +Dave Hudson - <dave@humbug.demon.co.uk>; modified by Peter Anvin +<hpa@yggdrasil.com>. Fixes and additions by Roman Hodek +<roman@hodek.net> for Debian/GNU Linux. +.SH ACKNOWLEDGMENTS +.B mkdosfs +is based on code from +.BR mke2fs +(written by Remy Card - <card@masi.ibp.fr>) which is itself based on +.BR mkfs +(written by Linus Torvalds - <torvalds@cs.helsinki.fi>). +.SH SEE ALSO +.BR dosfsck (8), +.BR dosfslabel (8), +.BR mkfs (8) diff --git a/packaging/dosfstools.changes b/packaging/dosfstools.changes new file mode 100644 index 0000000..ec0cb9b --- /dev/null +++ b/packaging/dosfstools.changes @@ -0,0 +1,163 @@ +* Thu Oct 28 2010 Yan Yin <yan.yin@intel.com> - 3.0.10 +- Update to 3.0.10 + +* Sun Feb 28 2010 Anas Nashif <anas.nashif@intel.com> - 3.0.9 +- Spec cleanup + +* Mon Feb 01 2010 Yi Yang <yi.y.yang@intel.com> - 3.0.9 +- Update to 3.0.9 + +* Tue Sep 22 2009 Anas Nashif <anas.nashif@intel.com> - 3.0.1 +- Update to 3.0.1 + +* Tue Feb 19 2008 Fedora Release Engineering <rel-eng@fedoraproject.org> - 2.11-9 +- Autorebuild for GCC 4.3 + +* Tue Apr 3 2007 Jeremy Katz <katzj@redhat.com> - 2.11-8 +- add dosfslabel (originally by Peter Jones) + +* Wed Feb 21 2007 Peter Vrabec <pvrabec@redhat.com> 2.11-7 +- fix debuginfo package (#225707) + +* Wed Jul 12 2006 Jesse Keating <jkeating@redhat.com> - 2.11-6.1 +- rebuild + +* Fri Jun 30 2006 Peter Vrabec <pvrabec@redhat.com> 2.11-6 +- fix upgrade path (#197231) + +* Thu May 11 2006 Peter Vrabec <pvrabec@redhat.com> 2.11-5 +- fix work with disk image files > 4GB (#191198) + +* Fri Feb 10 2006 Jesse Keating <jkeating@redhat.com> - 2.11-4.2 +- bump again for double-long bug on ppc(64) + +* Tue Feb 07 2006 Jesse Keating <jkeating@redhat.com> - 2.11-4.1 +- rebuilt for new gcc4.1 snapshot and glibc changes + +* Sun Dec 16 2005 Jakub Jelinek <jakub@redhat.com> 2.11-4 +- rebuilt with GCC 4.1 +- make it build with -D_FORTIFY_SOURCE=2 + +* Sun Nov 06 2005 Peter Vrabec <pvrabec@redhat.com> 2.11-3 +- fix LFS (#172369) + +* Fri Nov 04 2005 Peter Vrabec <pvrabec@redhat.com> 2.11-2 +- fix LFS + +* Wed Oct 12 2005 Peter Vrabec <pvrabec@redhat.com> 2.11-1 +- upgrade + +* Thu Apr 28 2005 Peter Vrabec <pvrabec@redhat.com> 2.10-3 +- if HDIO_GETGEO fails, print a warning and default to H=255,S=63 (#155950) + +* Thu Mar 17 2005 Peter Vrabec <pvrabec@redhat.com> 2.10-2 +- rebuild + +* Thu Dec 09 2004 Peter Vrabec <pvrabec@redhat.com> 2.10-1 +- updated to 2.10 + +* Wed Nov 10 2004 Martin Stransky <stransky@redhat.com> 2.8-16 +- add check for minimum count of clusters in FAT16 and FAT32 + +* Wed Oct 13 2004 Peter Vrabec <pvrabec@redhat.com> 2.8-15 +- fix fat_length type in boot.c. (same problem like in RHEL bug #135293) + +* Wed Oct 6 2004 Jeremy Katz <katzj@redhat.com> - 2.8-14 +- fix rebuilding (#134834) + +* Tue Jun 15 2004 Elliot Lee <sopwith@redhat.com> +- rebuilt + +* Fri Feb 13 2004 Elliot Lee <sopwith@redhat.com> +- rebuilt + +* Wed Sep 3 2003 Bill Nottingham <notting@redhat.com> 2.8-11 +- rebuild + +* Wed Sep 3 2003 Bill Nottingham <notting@redhat.com> 2.8-10 +- don't rely on <linux/msdos_fs.h> including <asm/byteorder.h> + +* Tue Jun 24 2003 Jeremy Katz <katzj@redhat.com> 2.8-9 +- rebuild + +* Tue Jun 24 2003 Jeremy Katz <katzj@redhat.com> 2.8-8 +- add patch from Vince Busam (http://www.sixpak.org/dosfstools/) to do auto + creation of FAT32 on large devices (#97308) + +* Wed Jun 04 2003 Elliot Lee <sopwith@redhat.com> +- rebuilt + +* Wed Feb 19 2003 Jeremy Katz <katzj@redhat.com> 2.8-6 +- handle getting the size of loop devices properly (part of #84351) + +* Wed Jan 22 2003 Tim Powers <timp@redhat.com> +- rebuilt + +* Thu Dec 12 2002 Elliot Lee <sopwith@redhat.com> 2.8-4 +- Patch2 for errno + +* Fri Jun 21 2002 Tim Powers <timp@redhat.com> +- automated rebuild + +* Thu May 23 2002 Tim Powers <timp@redhat.com> +- automated rebuild + +* Thu Mar 07 2002 Florian La Roche <Florian.LaRoche@redhat.de> +- update to version 2.8 + +* Fri Jul 6 2001 Preston Brown <pbrown@redhat.com> +- major upgrade to v2.7. +- forward port old ia64 patch (now incorporated) s390 additions + +* Tue Mar 20 2001 Oliver Paukstadt <oliver.paukstadt@millenux.com> +- ported to zSeries (64 bit) + +* Wed Jul 12 2000 Prospector <bugzilla@redhat.com> +- automatic rebuild + +* Fri Jun 17 2000 Bill Nottingham <notting@redhat.com> +- hard link mkdosfs + +* Thu Jun 15 2000 Matt Wilson <msw@redhat.com> +- FHS +- patch to build against 2.4 kernel headers (patch3) + +* Fri Apr 28 2000 Bill Nottingham <notting@redhat.com> +- fix for ia64 + +* Thu Feb 3 2000 Matt Wilson <msw@redhat.com> +- remove mkdosfs.8 symlink, symlink mkdosfs.8.gz to mkfs.msdos.8.gz + +* Wed Feb 02 2000 Cristian Gafton <gafton@redhat.com> +- fix descriptions and summary +- man pages are compressed + +* Thu Dec 16 1999 Cristian Gafton <gafton@redhat.com> +- fix the 2.88MB drives (patch from hjl) + +* Mon Aug 16 1999 Matt Wilson <msw@redhat.com> +- updated to 2.2 + +* Sun Jun 27 1999 Matt Wilson <msw@redhat.com> +- changed to new maintainer, renamed to dosfstools + +* Sat Apr 17 1999 Jeff Johnson <jbj@redhat.com> +- fix mkdosfs on sparc (#1746) + +* Sun Mar 21 1999 Cristian Gafton <gafton@redhat.com> +- auto rebuild in the new build environment (release 10) + +* Thu Jan 21 1999 Bill Nottingham <notting@redhat.com> +- build for RH 6.0 + +* Tue Oct 13 1998 Cristian Gafton <gafton@redhat.com> +- avoid using unsinged long on alphas + +* Sun Aug 16 1998 Jeff Johnson <jbj@redhat.com> +- build root + +* Mon Apr 27 1998 Prospector System <bugs@redhat.com> +- translations modified for de, fr, tr + +* Thu Jul 10 1997 Erik Troan <ewt@redhat.com> +- built against glibc diff --git a/packaging/dosfstools.spec b/packaging/dosfstools.spec new file mode 100644 index 0000000..2ae191a --- /dev/null +++ b/packaging/dosfstools.spec @@ -0,0 +1,34 @@ +Name: dosfstools +Summary: Utilities for making and checking MS-DOS FAT filesystems on Linux +Version: 3.0.10 +Release: 6 +License: GPLv3+ +Group: Applications/System +Source0: http://www.daniel-baumann.ch/software/dosfstools/%{name}-%{version}.tar.bz2 +URL: http://www.daniel-baumann.ch/software/dosfstools/ +Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root + +%description +The dosfstools package includes the mkdosfs and dosfsck utilities, +which respectively make and check MS-DOS FAT filesystems on hard +drives or on floppies. + +%prep +%setup -q + +%build +make %{?_smp_mflags} CFLAGS="$RPM_OPT_FLAGS -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" + +%install +rm -rf %{buildroot} +make DESTDIR=%{buildroot} install-bin install-man PREFIX=%{_prefix} SBINDIR=/sbin + +%clean +rm -rf %{buildroot} + +%files +%defattr(-,root,root,-) +%doc COPYING doc/*-2.x +/sbin/* +%doc %{_mandir}/man8/* + diff --git a/src/boot.c b/src/boot.c new file mode 100644 index 0000000..f5113e9 --- /dev/null +++ b/src/boot.c @@ -0,0 +1,516 @@ +/* boot.c - Read and analyze ia PC/MS-DOS boot sector + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +/* FAT32, VFAT, Atari format support, and various fixes additions May 1998 + * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */ + +#include <stdio.h> +#include <string.h> +#include <sys/types.h> +#include <stdlib.h> +#include <time.h> + +#include "common.h" +#include "dosfsck.h" +#include "fat.h" +#include "io.h" +#include "boot.h" + + +#define ROUND_TO_MULTIPLE(n,m) ((n) && (m) ? (n)+(m)-1-((n)-1)%(m) : 0) + /* don't divide by zero */ + +/* cut-over cluster counts for FAT12 and FAT16 */ +#define FAT12_THRESHOLD 4085 +#define FAT16_THRESHOLD 65525 + +static struct { + __u8 media; + char *descr; +} mediabytes[] = { + { 0xf0, "5.25\" or 3.5\" HD floppy" }, + { 0xf8, "hard disk" }, + { 0xf9, "3,5\" 720k floppy 2s/80tr/9sec or " + "5.25\" 1.2M floppy 2s/80tr/15sec" }, + { 0xfa, "5.25\" 320k floppy 1s/80tr/8sec" }, + { 0xfb, "3.5\" 640k floppy 2s/80tr/8sec" }, + { 0xfc, "5.25\" 180k floppy 1s/40tr/9sec" }, + { 0xfd, "5.25\" 360k floppy 2s/40tr/9sec" }, + { 0xfe, "5.25\" 160k floppy 1s/40tr/8sec" }, + { 0xff, "5.25\" 320k floppy 2s/40tr/8sec" }, +}; + +#if defined __alpha || defined __arm || defined __arm__ || defined __ia64__ || defined __s390x__ \ + || defined __x86_64__ || defined __ppc64__ || defined __bfin__ \ + || defined __MICROBLAZE__ +/* Unaligned fields must first be copied byte-wise */ +#define GET_UNALIGNED_W(f) \ + ({ \ + unsigned short __v; \ + memcpy( &__v, &f, sizeof(__v) ); \ + CF_LE_W( *(unsigned short *)&__v ); \ + }) +#else +#define GET_UNALIGNED_W(f) CF_LE_W( *(unsigned short *)&f ) +#endif + + +static char *get_media_descr( unsigned char media ) +{ + int i; + + for( i = 0; i < sizeof(mediabytes)/sizeof(*mediabytes); ++i ) { + if (mediabytes[i].media == media) + return( mediabytes[i].descr ); + } + return( "undefined" ); +} + +static void dump_boot(DOS_FS *fs,struct boot_sector *b,unsigned lss) +{ + unsigned short sectors; + + printf("Boot sector contents:\n"); + if (!atari_format) { + char id[9]; + strncpy(id,b->system_id,8); + id[8] = 0; + printf("System ID \"%s\"\n",id); + } + else { + /* On Atari, a 24 bit serial number is stored at offset 8 of the boot + * sector */ + printf("Serial number 0x%x\n", + b->system_id[5] | (b->system_id[6]<<8) | (b->system_id[7]<<16)); + } + printf("Media byte 0x%02x (%s)\n",b->media,get_media_descr(b->media)); + printf("%10d bytes per logical sector\n",GET_UNALIGNED_W(b->sector_size)); + printf("%10d bytes per cluster\n",fs->cluster_size); + printf("%10d reserved sector%s\n",CF_LE_W(b->reserved), + CF_LE_W(b->reserved) == 1 ? "" : "s"); + printf("First FAT starts at byte %llu (sector %llu)\n", + (unsigned long long)fs->fat_start, + (unsigned long long)fs->fat_start/lss); + printf("%10d FATs, %d bit entries\n",b->fats,fs->fat_bits); + printf("%10d bytes per FAT (= %u sectors)\n",fs->fat_size, + fs->fat_size/lss); + if (!fs->root_cluster) { + printf("Root directory starts at byte %llu (sector %llu)\n", + (unsigned long long)fs->root_start, + (unsigned long long)fs->root_start/lss); + printf("%10d root directory entries\n",fs->root_entries); + } + else { + printf( "Root directory start at cluster %lu (arbitrary size)\n", + fs->root_cluster); + } + printf("Data area starts at byte %llu (sector %llu)\n", + (unsigned long long)fs->data_start, + (unsigned long long)fs->data_start/lss); + printf("%10lu data clusters (%llu bytes)\n",fs->clusters, + (unsigned long long)fs->clusters*fs->cluster_size); + printf("%u sectors/track, %u heads\n",CF_LE_W(b->secs_track), + CF_LE_W(b->heads)); + printf("%10u hidden sectors\n", + atari_format ? + /* On Atari, the hidden field is only 16 bit wide and unused */ + (((unsigned char *)&b->hidden)[0] | + ((unsigned char *)&b->hidden)[1] << 8) : + CF_LE_L(b->hidden)); + sectors = GET_UNALIGNED_W( b->sectors ); + printf("%10u sectors total\n", sectors ? sectors : CF_LE_L(b->total_sect)); +} + +static void check_backup_boot(DOS_FS *fs, struct boot_sector *b, int lss) +{ + struct boot_sector b2; + + if (!fs->backupboot_start) { + printf( "There is no backup boot sector.\n" ); + if (CF_LE_W(b->reserved) < 3) { + printf( "And there is no space for creating one!\n" ); + return; + } + if (interactive) + printf( "1) Create one\n2) Do without a backup\n" ); + else printf( " Auto-creating backup boot block.\n" ); + if (!interactive || get_key("12","?") == '1') { + int bbs; + /* The usual place for the backup boot sector is sector 6. Choose + * that or the last reserved sector. */ + if (CF_LE_W(b->reserved) >= 7 && CF_LE_W(b->info_sector) != 6) + bbs = 6; + else { + bbs = CF_LE_W(b->reserved) - 1; + if (bbs == CF_LE_W(b->info_sector)) + --bbs; /* this is never 0, as we checked reserved >= 3! */ + } + fs->backupboot_start = bbs*lss; + b->backup_boot = CT_LE_W(bbs); + fs_write(fs->backupboot_start,sizeof(*b),b); + fs_write((loff_t)offsetof(struct boot_sector,backup_boot), + sizeof(b->backup_boot),&b->backup_boot); + printf( "Created backup of boot sector in sector %d\n", bbs ); + return; + } + else return; + } + + fs_read(fs->backupboot_start,sizeof(b2),&b2); + if (memcmp(b,&b2,sizeof(b2)) != 0) { + /* there are any differences */ + __u8 *p, *q; + int i, pos, first = 1; + char buf[20]; + + printf( "There are differences between boot sector and its backup.\n" ); + printf( "Differences: (offset:original/backup)\n " ); + pos = 2; + for( p = (__u8 *)b, q = (__u8 *)&b2, i = 0; i < sizeof(b2); + ++p, ++q, ++i ) { + if (*p != *q) { + sprintf( buf, "%s%u:%02x/%02x", first ? "" : ", ", + (unsigned)(p-(__u8 *)b), *p, *q ); + if (pos + strlen(buf) > 78) printf( "\n " ), pos = 2; + printf( "%s", buf ); + pos += strlen(buf); + first = 0; + } + } + printf( "\n" ); + + if (interactive) + printf( "1) Copy original to backup\n" + "2) Copy backup to original\n" + "3) No action\n" ); + else printf( " Not automatically fixing this.\n" ); + switch (interactive ? get_key("123","?") : '3') { + case '1': + fs_write(fs->backupboot_start,sizeof(*b),b); + break; + case '2': + fs_write(0,sizeof(b2),&b2); + break; + default: + break; + } + } +} + +static void init_fsinfo(struct info_sector *i) +{ + i->magic = CT_LE_L(0x41615252); + i->signature = CT_LE_L(0x61417272); + i->free_clusters = CT_LE_L(-1); + i->next_cluster = CT_LE_L(2); + i->boot_sign = CT_LE_W(0xaa55); +} + +static void read_fsinfo(DOS_FS *fs, struct boot_sector *b,int lss) +{ + struct info_sector i; + + if (!b->info_sector) { + printf( "No FSINFO sector\n" ); + if (interactive) + printf( "1) Create one\n2) Do without FSINFO\n" ); + else printf( " Not automatically creating it.\n" ); + if (interactive && get_key("12","?") == '1') { + /* search for a free reserved sector (not boot sector and not + * backup boot sector) */ + __u32 s; + for( s = 1; s < CF_LE_W(b->reserved); ++s ) + if (s != CF_LE_W(b->backup_boot)) break; + if (s > 0 && s < CF_LE_W(b->reserved)) { + init_fsinfo(&i); + fs_write((loff_t)s*lss,sizeof(i),&i); + b->info_sector = CT_LE_W(s); + fs_write((loff_t)offsetof(struct boot_sector,info_sector), + sizeof(b->info_sector),&b->info_sector); + if (fs->backupboot_start) + fs_write(fs->backupboot_start+ + offsetof(struct boot_sector,info_sector), + sizeof(b->info_sector),&b->info_sector); + } + else { + printf( "No free reserved sector found -- " + "no space for FSINFO sector!\n" ); + return; + } + } + else return; + } + + fs->fsinfo_start = CF_LE_W(b->info_sector)*lss; + fs_read(fs->fsinfo_start,sizeof(i),&i); + + if (i.magic != CT_LE_L(0x41615252) || + i.signature != CT_LE_L(0x61417272) || + i.boot_sign != CT_LE_W(0xaa55)) { + printf( "FSINFO sector has bad magic number(s):\n" ); + if (i.magic != CT_LE_L(0x41615252)) + printf( " Offset %llu: 0x%08x != expected 0x%08x\n", + (unsigned long long)offsetof(struct info_sector,magic), + CF_LE_L(i.magic),0x41615252); + if (i.signature != CT_LE_L(0x61417272)) + printf( " Offset %llu: 0x%08x != expected 0x%08x\n", + (unsigned long long)offsetof(struct info_sector,signature), + CF_LE_L(i.signature),0x61417272); + if (i.boot_sign != CT_LE_W(0xaa55)) + printf( " Offset %llu: 0x%04x != expected 0x%04x\n", + (unsigned long long)offsetof(struct info_sector,boot_sign), + CF_LE_W(i.boot_sign),0xaa55); + if (interactive) + printf( "1) Correct\n2) Don't correct (FSINFO invalid then)\n" ); + else printf( " Auto-correcting it.\n" ); + if (!interactive || get_key("12","?") == '1') { + init_fsinfo(&i); + fs_write(fs->fsinfo_start,sizeof(i),&i); + } + else fs->fsinfo_start = 0; + } + + if (fs->fsinfo_start) + fs->free_clusters = CF_LE_L(i.free_clusters); +} + +void read_boot(DOS_FS *fs) +{ + struct boot_sector b; + unsigned total_sectors; + unsigned short logical_sector_size, sectors; + unsigned fat_length; + loff_t data_size; + + fs_read(0,sizeof(b),&b); + logical_sector_size = GET_UNALIGNED_W(b.sector_size); + if (!logical_sector_size) die("Logical sector size is zero."); + + /* This was moved up because it's the first thing that will fail */ + /* if the platform needs special handling of unaligned multibyte accesses */ + /* but such handling isn't being provided. See GET_UNALIGNED_W() above. */ + if (logical_sector_size & (SECTOR_SIZE-1)) + die("Logical sector size (%d bytes) is not a multiple of the physical " + "sector size.",logical_sector_size); + + fs->cluster_size = b.cluster_size*logical_sector_size; + if (!fs->cluster_size) die("Cluster size is zero."); + if (b.fats != 2 && b.fats != 1) + die("Currently, only 1 or 2 FATs are supported, not %d.\n",b.fats); + fs->nfats = b.fats; + sectors = GET_UNALIGNED_W(b.sectors); + total_sectors = sectors ? sectors : CF_LE_L(b.total_sect); + if (verbose) printf("Checking we can access the last sector of the filesystem\n"); + /* Can't access last odd sector anyway, so round down */ + fs_test((loff_t)((total_sectors & ~1)-1)*(loff_t)logical_sector_size, + logical_sector_size); + fat_length = CF_LE_W(b.fat_length) ? + CF_LE_W(b.fat_length) : CF_LE_L(b.fat32_length); + fs->fat_start = (loff_t)CF_LE_W(b.reserved)*logical_sector_size; + fs->root_start = ((loff_t)CF_LE_W(b.reserved)+b.fats*fat_length)* + logical_sector_size; + fs->root_entries = GET_UNALIGNED_W(b.dir_entries); + fs->data_start = fs->root_start+ROUND_TO_MULTIPLE(fs->root_entries << + MSDOS_DIR_BITS,logical_sector_size); + data_size = (loff_t)total_sectors*logical_sector_size-fs->data_start; + fs->clusters = data_size/fs->cluster_size; + fs->root_cluster = 0; /* indicates standard, pre-FAT32 root dir */ + fs->fsinfo_start = 0; /* no FSINFO structure */ + fs->free_clusters = -1; /* unknown */ + if (!b.fat_length && b.fat32_length) { + fs->fat_bits = 32; + fs->root_cluster = CF_LE_L(b.root_cluster); + if (!fs->root_cluster && fs->root_entries) + /* M$ hasn't specified this, but it looks reasonable: If + * root_cluster is 0 but there is a separate root dir + * (root_entries != 0), we handle the root dir the old way. Give a + * warning, but convertig to a root dir in a cluster chain seems + * to complex for now... */ + printf( "Warning: FAT32 root dir not in cluster chain! " + "Compatibility mode...\n" ); + else if (!fs->root_cluster && !fs->root_entries) + die("No root directory!"); + else if (fs->root_cluster && fs->root_entries) + printf( "Warning: FAT32 root dir is in a cluster chain, but " + "a separate root dir\n" + " area is defined. Cannot fix this easily.\n" ); + if (fs->clusters < FAT16_THRESHOLD) + printf("Warning: Filesystem is FAT32 according to fat_length " + "and fat32_length fields,\n" + " but has only %lu clusters, less than the required " + "minimum of %d.\n" + " This may lead to problems on some systems.\n", + fs->clusters, FAT16_THRESHOLD); + + fs->backupboot_start = CF_LE_W(b.backup_boot)*logical_sector_size; + check_backup_boot(fs,&b,logical_sector_size); + + read_fsinfo(fs,&b,logical_sector_size); + } + else if (!atari_format) { + /* On real MS-DOS, a 16 bit FAT is used whenever there would be too + * much clusers otherwise. */ + fs->fat_bits = (fs->clusters >= FAT12_THRESHOLD) ? 16 : 12; + if (fs->clusters >= FAT16_THRESHOLD) + die("Too many clusters (%lu) for FAT16 filesystem.", + fs->clusters); + } + else { + /* On Atari, things are more difficult: GEMDOS always uses 12bit FATs + * on floppies, and always 16 bit on harddisks. */ + fs->fat_bits = 16; /* assume 16 bit FAT for now */ + /* If more clusters than fat entries in 16-bit fat, we assume + * it's a real MSDOS FS with 12-bit fat. */ + if (fs->clusters+2 > fat_length*logical_sector_size*8/16 || + /* if it's a floppy disk --> 12bit fat */ + device_no == 2 || + /* if it's a ramdisk or loopback device and has one of the usual + * floppy sizes -> 12bit FAT */ + ((device_no == 1 || device_no == 7) && + (total_sectors == 720 || total_sectors == 1440 || + total_sectors == 2880))) + fs->fat_bits = 12; + } + /* On FAT32, the high 4 bits of a FAT entry are reserved */ + fs->eff_fat_bits = (fs->fat_bits == 32) ? 28 : fs->fat_bits; + fs->fat_size = fat_length*logical_sector_size; + + fs->label = calloc(12, sizeof (__u8)); + if (fs->fat_bits == 12 || fs->fat_bits == 16) { + struct boot_sector_16 *b16 = (struct boot_sector_16 *)&b; + if (b16->extended_sig == 0x29) + memmove(fs->label, b16->label, 11); + else + fs->label = NULL; + } else if (fs->fat_bits == 32) { + if (b.extended_sig == 0x29) + memmove(fs->label, &b.label, 11); + else + fs->label = NULL; + } + + if (fs->clusters > ((unsigned long long)fs->fat_size*8/fs->fat_bits)-2) + die("File system has %d clusters but only space for %d FAT entries.", + fs->clusters,((unsigned long long)fs->fat_size*8/fs->fat_bits)-2); + if (!fs->root_entries && !fs->root_cluster) + die("Root directory has zero size."); + if (fs->root_entries & (MSDOS_DPS-1)) + die("Root directory (%d entries) doesn't span an integral number of " + "sectors.",fs->root_entries); + if (logical_sector_size & (SECTOR_SIZE-1)) + die("Logical sector size (%d bytes) is not a multiple of the physical " + "sector size.",logical_sector_size); +#if 0 /* linux kernel doesn't check that either */ + /* ++roman: On Atari, these two fields are often left uninitialized */ + if (!atari_format && (!b.secs_track || !b.heads)) + die("Invalid disk format in boot sector."); +#endif + if (verbose) dump_boot(fs,&b,logical_sector_size); +} + +static void write_boot_label(DOS_FS *fs, char *label) +{ + struct boot_sector b; + struct boot_sector_16 *b16 = (struct boot_sector_16 *)&b; + + fs_read(0, sizeof(b), &b); + if (fs->fat_bits == 12 || fs->fat_bits == 16) { + if (b16->extended_sig != 0x29) { + b16->extended_sig = 0x29; + b16->serial = 0; + memmove(b16->fs_type, fs->fat_bits == 12 ?"FAT12 ":"FAT16 ", 8); + } + memmove(b16->label, label, 11); + } else if (fs->fat_bits == 32) { + if (b.extended_sig != 0x29) { + b.extended_sig = 0x29; + b.serial = 0; + memmove(b.fs_type, "FAT32 ", 8); + } + memmove(b.label, label, 11); + } + fs_write(0, sizeof(b), &b); + if (fs->fat_bits == 32 && fs->backupboot_start) + fs_write(fs->backupboot_start, sizeof(b), &b); +} + +static loff_t find_volume_de(DOS_FS *fs, DIR_ENT *de) +{ + unsigned long cluster; + loff_t offset; + int i; + + if (fs->root_cluster) { + for (cluster = fs->root_cluster; + cluster != 0 && cluster != -1; + cluster = next_cluster(fs, cluster)) { + offset = cluster_start(fs, cluster); + for (i = 0; i * sizeof(DIR_ENT) < fs->cluster_size; i++) { + fs_read(offset, sizeof(DIR_ENT), de); + if (de->attr & ATTR_VOLUME) + return offset; + offset += sizeof(DIR_ENT); + } + } + } else { + for (i = 0; i < fs->root_entries; i++) { + offset = fs->root_start + i * sizeof(DIR_ENT); + fs_read(offset, sizeof(DIR_ENT), de); + if (de->attr & ATTR_VOLUME) + return offset; + } + } + + return 0; +} + +static void write_volume_label(DOS_FS *fs, char *label) +{ + time_t now = time(NULL); + struct tm *mtime = localtime(&now); + loff_t offset; + DIR_ENT de; + + offset = find_volume_de(fs, &de); + if (offset == 0) + return; + + memcpy(de.name, label, 11); + de.time = CT_LE_W((unsigned short)((mtime->tm_sec >> 1) + + (mtime->tm_min << 5) + + (mtime->tm_hour << 11))); + de.date = CT_LE_W((unsigned short)(mtime->tm_mday + + ((mtime->tm_mon+1) << 5) + + ((mtime->tm_year-80) << 9))); + fs_write(offset, sizeof(DIR_ENT), &de); +} + +void write_label(DOS_FS *fs, char *label) +{ + int l = strlen(label); + + while (l < 11) + label[l++] = ' '; + + write_boot_label(fs, label); + write_volume_label(fs, label); +} diff --git a/src/boot.h b/src/boot.h new file mode 100644 index 0000000..eedf2b0 --- /dev/null +++ b/src/boot.h @@ -0,0 +1,31 @@ +/* boot.h - Read and analyze ia PC/MS-DOS boot sector + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + + +#ifndef _BOOT_H +#define _BOOT_H + +void read_boot(DOS_FS *fs); +void write_label(DOS_FS *fs, char *label); + +/* Reads the boot sector from the currently open device and initializes *FS */ + +#endif diff --git a/src/check.c b/src/check.c new file mode 100644 index 0000000..d6c54c1 --- /dev/null +++ b/src/check.c @@ -0,0 +1,985 @@ +/* check.c - Check and repair a PC/MS-DOS file system + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +/* FAT32, VFAT, Atari format support, and various fixes additions May 1998 + * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */ + + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <limits.h> +#include <time.h> + +#include "common.h" +#include "dosfsck.h" +#include "io.h" +#include "fat.h" +#include "file.h" +#include "lfn.h" +#include "check.h" + + +static DOS_FILE *root; + +/* get start field of a dir entry */ +#define FSTART(p,fs) \ + ((unsigned long)CF_LE_W(p->dir_ent.start) | \ + (fs->fat_bits == 32 ? CF_LE_W(p->dir_ent.starthi) << 16 : 0)) + +#define MODIFY(p,i,v) \ + do { \ + if (p->offset) { \ + p->dir_ent.i = v; \ + fs_write(p->offset+offsetof(DIR_ENT,i), \ + sizeof(p->dir_ent.i),&p->dir_ent.i); \ + } \ + } while(0) + +#define MODIFY_START(p,v,fs) \ + do { \ + unsigned long __v = (v); \ + if (!p->offset) { \ + /* writing to fake entry for FAT32 root dir */ \ + if (!__v) die("Oops, deleting FAT32 root dir!"); \ + fs->root_cluster = __v; \ + p->dir_ent.start = CT_LE_W(__v&0xffff); \ + p->dir_ent.starthi = CT_LE_W(__v>>16); \ + __v = CT_LE_L(__v); \ + fs_write((loff_t)offsetof(struct boot_sector,root_cluster), \ + sizeof(((struct boot_sector *)0)->root_cluster), \ + &__v); \ + } \ + else { \ + MODIFY(p,start,CT_LE_W((__v)&0xffff)); \ + if (fs->fat_bits == 32) \ + MODIFY(p,starthi,CT_LE_W((__v)>>16)); \ + } \ + } while(0) + + +loff_t alloc_rootdir_entry(DOS_FS *fs, DIR_ENT *de, const char *pattern) +{ + static int curr_num = 0; + loff_t offset; + + if (fs->root_cluster) { + DIR_ENT d2; + int i = 0, got = 0; + unsigned long clu_num, prev = 0; + loff_t offset2; + + clu_num = fs->root_cluster; + offset = cluster_start(fs,clu_num); + while (clu_num > 0 && clu_num != -1) { + fs_read(offset,sizeof(DIR_ENT),&d2); + if (IS_FREE(d2.name) && d2.attr != VFAT_LN_ATTR) { + got = 1; + break; + } + i += sizeof(DIR_ENT); + offset += sizeof(DIR_ENT); + if ((i % fs->cluster_size) == 0) { + prev = clu_num; + if ((clu_num = next_cluster(fs,clu_num)) == 0 || clu_num == -1) + break; + offset = cluster_start(fs,clu_num); + } + } + if (!got) { + /* no free slot, need to extend root dir: alloc next free cluster + * after previous one */ + if (!prev) + die("Root directory has no cluster allocated!"); + for (clu_num = prev+1; clu_num != prev; clu_num++) { + FAT_ENTRY entry; + + if (clu_num >= fs->clusters+2) clu_num = 2; + get_fat(&entry, fs->fat, clu_num, fs); + if (!entry.value) + break; + } + if (clu_num == prev) + die("Root directory full and no free cluster"); + set_fat(fs,prev,clu_num); + set_fat(fs,clu_num,-1); + set_owner(fs, clu_num, get_owner(fs, fs->root_cluster)); + /* clear new cluster */ + memset( &d2, 0, sizeof(d2) ); + offset = cluster_start(fs,clu_num); + for( i = 0; i < fs->cluster_size; i += sizeof(DIR_ENT) ) + fs_write( offset+i, sizeof(d2), &d2 ); + } + memset(de,0,sizeof(DIR_ENT)); + while (1) { + char expanded[12]; + sprintf(expanded, pattern, curr_num); + memcpy(de->name+4, expanded, 4); + memcpy(de->ext, expanded+4, 3); + clu_num = fs->root_cluster; + i = 0; + offset2 = cluster_start(fs,clu_num); + while (clu_num > 0 && clu_num != -1) { + fs_read(offset2,sizeof(DIR_ENT),&d2); + if (offset2 != offset && + !strncmp(d2.name,de->name,MSDOS_NAME)) + break; + i += sizeof(DIR_ENT); + offset2 += sizeof(DIR_ENT); + if ((i % fs->cluster_size) == 0) { + if ((clu_num = next_cluster(fs,clu_num)) == 0 || + clu_num == -1) + break; + offset2 = cluster_start(fs,clu_num); + } + } + if (clu_num == 0 || clu_num == -1) + break; + if (++curr_num >= 10000) die("Unable to create unique name"); + } + } + else { + DIR_ENT *root; + int next_free = 0, scan; + + root = alloc(fs->root_entries*sizeof(DIR_ENT)); + fs_read(fs->root_start,fs->root_entries*sizeof(DIR_ENT),root); + + while (next_free < fs->root_entries) + if (IS_FREE(root[next_free].name) && + root[next_free].attr != VFAT_LN_ATTR) + break; + else next_free++; + if (next_free == fs->root_entries) + die("Root directory is full."); + offset = fs->root_start+next_free*sizeof(DIR_ENT); + memset(de,0,sizeof(DIR_ENT)); + while (1) { + sprintf(de->name,pattern,curr_num); + for (scan = 0; scan < fs->root_entries; scan++) + if (scan != next_free && + !strncmp(root[scan].name,de->name,MSDOS_NAME)) + break; + if (scan == fs->root_entries) break; + if (++curr_num >= 10000) die("Unable to create unique name"); + } + free(root); + } + ++n_files; + return offset; +} + + +/** + * Construct a full path (starting with '/') for the specified dentry, + * relative to the partition. All components are "long" names where possible. + * + * @param[in] file Information about dentry (file or directory) of interest + * + * return Pointer to static string containing file's full path + */ +static char *path_name(DOS_FILE *file) +{ + static char path[PATH_MAX*2]; + + if (!file) *path = 0; /* Reached the root directory */ + else { + if (strlen(path_name(file->parent)) > PATH_MAX) + die("Path name too long."); + if (strcmp(path,"/") != 0) strcat(path,"/"); + + /* Append the long name to the path, + * or the short name if there isn't a long one + */ + strcpy(strrchr(path,0),file->lfn?file->lfn:file_name(file->dir_ent.name)); + } + return path; +} + + +static int day_n[] = { 0,31,59,90,120,151,181,212,243,273,304,334,0,0,0,0 }; + /* JanFebMarApr May Jun Jul Aug Sep Oct Nov Dec */ + + +/* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */ + +time_t date_dos2unix(unsigned short time,unsigned short date) +{ + int month,year; + time_t secs; + + month = ((date >> 5) & 15)-1; + year = date >> 9; + secs = (time & 31)*2+60*((time >> 5) & 63)+(time >> 11)*3600+86400* + ((date & 31)-1+day_n[month]+(year/4)+year*365-((year & 3) == 0 && + month < 2 ? 1 : 0)+3653); + /* days since 1.1.70 plus 80's leap day */ + return secs; +} + + +static char *file_stat(DOS_FILE *file) +{ + static char temp[100]; + struct tm *tm; + char tmp[100]; + time_t date; + + date = date_dos2unix(CF_LE_W(file->dir_ent.time),CF_LE_W(file-> + dir_ent.date)); + tm = localtime(&date); + strftime(tmp,99,"%H:%M:%S %b %d %Y",tm); + sprintf(temp," Size %u bytes, date %s",CF_LE_L(file->dir_ent.size),tmp); + return temp; +} + + +static int bad_name(DOS_FILE *file) +{ + int i, spc, suspicious = 0; + char *bad_chars = atari_format ? "*?\\/:" : "*?<>|\"\\/:"; + unsigned char *name = file->dir_ent.name; + + /* Do not complain about (and auto-correct) the extended attribute files + * of OS/2. */ + if (strncmp(name,"EA DATA SF",11) == 0 || + strncmp(name,"WP ROOT SF",11) == 0) return 0; + + /* don't complain about the dummy 11 bytes used by patched Linux + kernels */ + if (file->dir_ent.lcase & FAT_NO_83NAME) return 0; + + for (i = 0; i < 8; i++) { + if (name[i] < ' ' || name[i] == 0x7f) return 1; + if (name[i] > 0x7f) ++suspicious; + if (strchr(bad_chars,name[i])) return 1; + } + + for (i = 8; i < 11; i++) { + if (name[i] < ' ' || name[i] == 0x7f) return 1; + if (name[i] > 0x7f) ++suspicious; + if (strchr(bad_chars,name[i])) return 1; + } + + spc = 0; + for (i = 0; i < 8; i++) { + if (name[i] == ' ') + spc = 1; + else if (spc) + /* non-space after a space not allowed, space terminates the name + * part */ + return 1; + } + + spc = 0; + for (i = 8; i < 11; i++) { + if (name[i] == ' ') + spc = 1; + else if (spc) + /* non-space after a space not allowed, space terminates the name + * part */ + return 1; + } + + /* Under GEMDOS, chars >= 128 are never allowed. */ + if (atari_format && suspicious) + return 1; + + /* Under MS-DOS and Windows, chars >= 128 in short names are valid + * (but these characters can be visualised differently depending on + * local codepage: CP437, CP866, etc). The chars are all basically ok, + * so we shouldn't auto-correct such names. */ + return 0; +} + +static void lfn_remove(loff_t from, loff_t to) +{ + int i; + DIR_ENT empty; + + /* New dir entry is zeroed except first byte, which is set to 0xe5. + * This is to avoid that some FAT-reading OSes (not Linux! ;) stop reading + * a directory at the first zero entry... + */ + memset( &empty, 0, sizeof(empty) ); + empty.name[0] = DELETED_FLAG; + + for( ; from < to; from += sizeof(empty) ) { + fs_write( from, sizeof(DIR_ENT), &empty ); + } +} + +static void drop_file(DOS_FS *fs,DOS_FILE *file) +{ + unsigned long cluster; + + MODIFY(file,name[0],DELETED_FLAG); + if (file->lfn) lfn_remove(file->lfn_offset, file->offset); + for (cluster = FSTART(file,fs); cluster > 0 && cluster < + fs->clusters+2; cluster = next_cluster(fs,cluster)) + set_owner(fs,cluster,NULL); + --n_files; +} + + +static void truncate_file(DOS_FS *fs,DOS_FILE *file,unsigned long clusters) +{ + int deleting; + unsigned long walk,next,prev; + + walk = FSTART(file,fs); + prev = 0; + if ((deleting = !clusters)) MODIFY_START(file,0,fs); + while (walk > 0 && walk != -1) { + next = next_cluster(fs,walk); + if (deleting) set_fat(fs,walk,0); + else if ((deleting = !--clusters)) set_fat(fs,walk,-1); + prev = walk; + walk = next; + } +} + + +static void auto_rename(DOS_FILE *file) +{ + DOS_FILE *first,*walk; + unsigned long int number; + + if (!file->offset) return; /* cannot rename FAT32 root dir */ + first = file->parent ? file->parent->first : root; + number = 0; + while (1) { + char num[8]; + sprintf(num, "%07d", number); + memcpy(file->dir_ent.name, "FSCK", 4); + memcpy(file->dir_ent.name+4, num, 4); + memcpy(file->dir_ent.ext, num+4, 3); + for (walk = first; walk; walk = walk->next) + if (walk != file && !strncmp(walk->dir_ent.name,file->dir_ent. + name,MSDOS_NAME)) break; + if (!walk) { + fs_write(file->offset,MSDOS_NAME,file->dir_ent.name); + if (file->lfn) lfn_fix_checksum(file->lfn_offset, file->offset, file->dir_ent.name); + return; + } + number++; + if (number > 9999999) { + die("Too many files need repair."); + } + } + die("Can't generate a unique name."); +} + + +static void rename_file(DOS_FILE *file) +{ + unsigned char name[46]; + unsigned char *walk,*here; + + if (!file->offset) { + printf( "Cannot rename FAT32 root dir\n" ); + return; /* cannot rename FAT32 root dir */ + } + while (1) { + printf("New name: "); + fflush(stdout); + if (fgets(name,45,stdin)) { + if ((here = strchr(name,'\n'))) *here = 0; + for (walk = strrchr(name,0); walk >= name && (*walk == ' ' || + *walk == '\t'); walk--); + walk[1] = 0; + for (walk = name; *walk == ' ' || *walk == '\t'; walk++); + if (file_cvt(walk,file->dir_ent.name)) { + fs_write(file->offset,MSDOS_NAME,file->dir_ent.name); + if (file->lfn) lfn_fix_checksum(file->lfn_offset, file->offset, file->dir_ent.name); + return; + } + } + } +} + + +static int handle_dot(DOS_FS *fs,DOS_FILE *file,int dots) +{ + char *name; + + name = strncmp(file->dir_ent.name,MSDOS_DOT,MSDOS_NAME) ? ".." : "."; + if (!(file->dir_ent.attr & ATTR_DIR)) { + printf("%s\n Is a non-directory.\n",path_name(file)); + if (interactive) + printf("1) Drop it\n2) Auto-rename\n3) Rename\n" + "4) Convert to directory\n"); + else printf(" Auto-renaming it.\n"); + switch (interactive ? get_key("1234","?") : '2') { + case '1': + drop_file(fs,file); + return 1; + case '2': + auto_rename(file); + printf(" Renamed to %s\n",file_name(file->dir_ent.name)); + return 0; + case '3': + rename_file(file); + return 0; + case '4': + MODIFY(file,size,CT_LE_L(0)); + MODIFY(file,attr,file->dir_ent.attr | ATTR_DIR); + break; + } + } + if (!dots) { + printf("Root contains directory \"%s\". Dropping it.\n",name); + drop_file(fs,file); + return 1; + } + return 0; +} + + +static int check_file(DOS_FS *fs,DOS_FILE *file) +{ + DOS_FILE *owner; + int restart; + unsigned long expect,curr,this,clusters,prev,walk,clusters2; + + if (file->dir_ent.attr & ATTR_DIR) { + if (CF_LE_L(file->dir_ent.size)) { + printf("%s\n Directory has non-zero size. Fixing it.\n", + path_name(file)); + MODIFY(file,size,CT_LE_L(0)); + } + if (file->parent && !strncmp(file->dir_ent.name,MSDOS_DOT,MSDOS_NAME)) { + expect = FSTART(file->parent,fs); + if (FSTART(file,fs) != expect) { + printf("%s\n Start (%ld) does not point to parent (%ld)\n", + path_name(file),FSTART(file,fs),expect); + MODIFY_START(file,expect,fs); + } + return 0; + } + if (file->parent && !strncmp(file->dir_ent.name,MSDOS_DOTDOT, + MSDOS_NAME)) { + expect = file->parent->parent ? FSTART(file->parent->parent,fs):0; + if (fs->root_cluster && expect == fs->root_cluster) + expect = 0; + if (FSTART(file,fs) != expect) { + printf("%s\n Start (%lu) does not point to .. (%lu)\n", + path_name(file),FSTART(file,fs),expect); + MODIFY_START(file,expect,fs); + } + return 0; + } + if (FSTART(file,fs)==0){ + printf ("%s\n Start does point to root directory. Deleting dir. \n", + path_name(file)); + MODIFY(file,name[0],DELETED_FLAG); + return 0; + } + } + if (FSTART(file,fs) >= fs->clusters+2) { + printf("%s\n Start cluster beyond limit (%lu > %lu). Truncating file.\n", + path_name(file),FSTART(file,fs),fs->clusters+1); + if (!file->offset) + die( "Bad FAT32 root directory! (bad start cluster)\n" ); + MODIFY_START(file,0,fs); + } + clusters = prev = 0; + for (curr = FSTART(file,fs) ? FSTART(file,fs) : + -1; curr != -1; curr = next_cluster(fs,curr)) { + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, curr, fs); + + if (!curEntry.value || bad_cluster(fs,curr)) { + printf("%s\n Contains a %s cluster (%lu). Assuming EOF.\n", + path_name(file), curEntry.value ? "bad" : "free",curr); + if (prev) set_fat(fs,prev,-1); + else if (!file->offset) + die( "FAT32 root dir starts with a bad cluster!" ); + else MODIFY_START(file,0,fs); + break; + } + if (!(file->dir_ent.attr & ATTR_DIR) && CF_LE_L(file->dir_ent.size) <= + (unsigned long long)clusters*fs->cluster_size) { + printf("%s\n File size is %u bytes, cluster chain length is > %llu " + "bytes.\n Truncating file to %u bytes.\n",path_name(file), + CF_LE_L(file->dir_ent.size),(unsigned long long)clusters*fs->cluster_size, + CF_LE_L(file->dir_ent.size)); + truncate_file(fs,file,clusters); + break; + } + if ((owner = get_owner(fs,curr))) { + int do_trunc = 0; + printf("%s and\n",path_name(owner)); + printf("%s\n share clusters.\n",path_name(file)); + clusters2 = 0; + for (walk = FSTART(owner,fs); walk > 0 && walk != -1; walk = + next_cluster(fs,walk)) + if (walk == curr) break; + else clusters2++; + restart = file->dir_ent.attr & ATTR_DIR; + if (!owner->offset) { + printf( " Truncating second to %llu bytes because first " + "is FAT32 root dir.\n", (unsigned long long)clusters2*fs->cluster_size ); + do_trunc = 2; + } + else if (!file->offset) { + printf( " Truncating first to %llu bytes because second " + "is FAT32 root dir.\n", (unsigned long long)clusters*fs->cluster_size ); + do_trunc = 1; + } + else if (interactive) + printf("1) Truncate first to %llu bytes%s\n" + "2) Truncate second to %llu bytes\n",(unsigned long long)clusters*fs->cluster_size, + restart ? " and restart" : "",(unsigned long long)clusters2*fs->cluster_size); + else printf(" Truncating second to %llu bytes.\n",(unsigned long long)clusters2* + fs->cluster_size); + if (do_trunc != 2 && + (do_trunc == 1 || + (interactive && get_key("12","?") == '1'))) { + prev = 0; + clusters = 0; + for (this = FSTART(owner,fs); this > 0 && this != -1; this = + next_cluster(fs,this)) { + if (this == curr) { + if (prev) set_fat(fs,prev,-1); + else MODIFY_START(owner,0,fs); + MODIFY(owner,size,CT_LE_L((unsigned long long)clusters*fs->cluster_size)); + if (restart) return 1; + while (this > 0 && this != -1) { + set_owner(fs,this,NULL); + this = next_cluster(fs,this); + } + this = curr; + break; + } + clusters++; + prev = this; + } + if (this != curr) + die("Internal error: didn't find cluster %d in chain" + " starting at %d",curr,FSTART(owner,fs)); + } + else { + if (prev) set_fat(fs,prev,-1); + else MODIFY_START(file,0,fs); + break; + } + } + set_owner(fs,curr,file); + clusters++; + prev = curr; + } + if (!(file->dir_ent.attr & ATTR_DIR) && CF_LE_L(file->dir_ent.size) > + (unsigned long long)clusters*fs->cluster_size) { + printf("%s\n File size is %u bytes, cluster chain length is %llu bytes." + "\n Truncating file to %lu bytes.\n",path_name(file),CF_LE_L(file-> + dir_ent.size),(unsigned long long)clusters*fs->cluster_size,(unsigned long long)clusters*fs->cluster_size); + MODIFY(file,size,CT_LE_L((unsigned long long)clusters*fs->cluster_size)); + } + return 0; +} + + +static int check_files(DOS_FS *fs,DOS_FILE *start) +{ + while (start) { + if (check_file(fs,start)) return 1; + start = start->next; + } + return 0; +} + + +static int check_dir(DOS_FS *fs,DOS_FILE **root,int dots) +{ + DOS_FILE *parent,**walk,**scan; + int dot,dotdot,skip,redo; + int good,bad; + + if (!*root) return 0; + parent = (*root)->parent; + good = bad = 0; + for (walk = root; *walk; walk = &(*walk)->next) + if (bad_name(*walk)) bad++; + else good++; + if (*root && parent && good+bad > 4 && bad > good/2) { + printf("%s\n Has a large number of bad entries. (%d/%d)\n", + path_name(parent),bad,good+bad); + if (!dots) printf( " Not dropping root directory.\n" ); + else if (!interactive) printf(" Not dropping it in auto-mode.\n"); + else if (get_key("yn","Drop directory ? (y/n)") == 'y') { + truncate_file(fs,parent,0); + MODIFY(parent,name[0],DELETED_FLAG); + /* buglet: deleted directory stays in the list. */ + return 1; + } + } + dot = dotdot = redo = 0; + walk = root; + while (*walk) { + if (!strncmp((*walk)->dir_ent.name,MSDOS_DOT,MSDOS_NAME) || + !strncmp((*walk)->dir_ent.name,MSDOS_DOTDOT,MSDOS_NAME)) { + if (handle_dot(fs,*walk,dots)) { + *walk = (*walk)->next; + continue; + } + if (!strncmp((*walk)->dir_ent.name,MSDOS_DOT,MSDOS_NAME)) dot++; + else dotdot++; + } + if (!((*walk)->dir_ent.attr & ATTR_VOLUME) && + bad_name(*walk)) { + puts(path_name(*walk)); + printf(" Bad short file name (%s).\n", file_name((*walk)->dir_ent.name)); + if (interactive) + printf("1) Drop file\n2) Rename file\n3) Auto-rename\n" + "4) Keep it\n"); + else printf(" Auto-renaming it.\n"); + switch (interactive ? get_key("1234","?") : '3') { + case '1': + drop_file(fs,*walk); + walk = &(*walk)->next; + continue; + case '2': + rename_file(*walk); + redo = 1; + break; + case '3': + auto_rename(*walk); + printf(" Renamed to %s\n",file_name((*walk)->dir_ent. + name)); + break; + case '4': + break; + } + } + /* don't check for duplicates of the volume label */ + if (!((*walk)->dir_ent.attr & ATTR_VOLUME)) { + scan = &(*walk)->next; + skip = 0; + while (*scan && !skip) { + if (!((*scan)->dir_ent.attr & ATTR_VOLUME) && + !memcmp((*walk)->dir_ent.name,(*scan)->dir_ent.name,MSDOS_NAME)) { + printf("%s\n Duplicate directory entry.\n First %s\n", + path_name(*walk),file_stat(*walk)); + printf(" Second %s\n",file_stat(*scan)); + if (interactive) + printf("1) Drop first\n2) Drop second\n3) Rename first\n" + "4) Rename second\n5) Auto-rename first\n" + "6) Auto-rename second\n"); + else printf(" Auto-renaming second.\n"); + switch (interactive ? get_key("123456","?") : '6') { + case '1': + drop_file(fs,*walk); + *walk = (*walk)->next; + skip = 1; + break; + case '2': + drop_file(fs,*scan); + *scan = (*scan)->next; + continue; + case '3': + rename_file(*walk); + printf(" Renamed to %s\n",path_name(*walk)); + redo = 1; + break; + case '4': + rename_file(*scan); + printf(" Renamed to %s\n",path_name(*walk)); + redo = 1; + break; + case '5': + auto_rename(*walk); + printf(" Renamed to %s\n",file_name((*walk)->dir_ent. + name)); + break; + case '6': + auto_rename(*scan); + printf(" Renamed to %s\n",file_name((*scan)->dir_ent. + name)); + break; + } + } + scan = &(*scan)->next; + } + if (skip) continue; + } + if (!redo) walk = &(*walk)->next; + else { + walk = root; + dot = dotdot = redo = 0; + } + } + if (dots && !dot) + printf("%s\n \".\" is missing. Can't fix this yet.\n", + path_name(parent)); + if (dots && !dotdot) + printf("%s\n \"..\" is missing. Can't fix this yet.\n", + path_name(parent)); + return 0; +} + + +/** + * Check a dentry's cluster chain for bad clusters. + * If requested, we verify readability and mark unreadable clusters as bad. + * + * @param[inout] fs Information about the filesystem + * @param[in] file dentry to check + * @param[in] read_test Nonzero == verify that dentry's clusters can + * be read + */ +static void test_file(DOS_FS *fs,DOS_FILE *file,int read_test) +{ + DOS_FILE *owner; + unsigned long walk,prev,clusters,next_clu; + + prev = clusters = 0; + for (walk = FSTART(file,fs); walk > 0 && walk < fs->clusters+2; + walk = next_clu) { + next_clu = next_cluster(fs,walk); + + /* In this stage we are checking only for a loop within our own + * cluster chain. + * Cross-linking of clusters is handled in check_file() + */ + if ((owner = get_owner(fs,walk))) { + if (owner == file) { + printf("%s\n Circular cluster chain. Truncating to %lu " + "cluster%s.\n",path_name(file),clusters,clusters == 1 ? "" : + "s"); + if (prev) set_fat(fs,prev,-1); + else if (!file->offset) + die( "Bad FAT32 root directory! (bad start cluster)\n" ); + else MODIFY_START(file,0,fs); + } + break; + } + if (bad_cluster(fs,walk)) break; + if (read_test) { + if (fs_test(cluster_start(fs,walk),fs->cluster_size)) { + prev = walk; + clusters++; + } + else { + printf("%s\n Cluster %lu (%lu) is unreadable. Skipping it.\n", + path_name(file),clusters,walk); + if (prev) set_fat(fs,prev,next_cluster(fs,walk)); + else MODIFY_START(file,next_cluster(fs,walk),fs); + set_fat(fs,walk,-2); + } + } + set_owner(fs,walk,file); + } + /* Revert ownership (for now) */ + for (walk = FSTART(file,fs); walk > 0 && walk < fs->clusters+2; + walk = next_cluster(fs,walk)) + if (bad_cluster(fs,walk)) break; + else if (get_owner(fs,walk) == file) set_owner(fs,walk,NULL); + else break; +} + + +static void undelete(DOS_FS *fs,DOS_FILE *file) +{ + unsigned long clusters,left,prev,walk; + + clusters = left = (CF_LE_L(file->dir_ent.size)+fs->cluster_size-1)/ + fs->cluster_size; + prev = 0; + + walk = FSTART(file,fs); + + while (left && (walk >= 2) && (walk < fs->clusters+2)) { + + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, walk, fs); + + if (!curEntry.value) + break; + + left--; + if (prev) set_fat(fs,prev,walk); + prev = walk; + walk++; + } + if (prev) set_fat(fs,prev,-1); + else MODIFY_START(file,0,fs); + if (left) + printf("Warning: Did only undelete %lu of %lu cluster%s.\n",clusters-left, + clusters,clusters == 1 ? "" : "s"); + +} + + +static void new_dir( void ) +{ + lfn_reset(); +} + + +/** + * Create a description for a referenced dentry and insert it in our dentry + * tree. Then, go check the dentry's cluster chain for bad clusters and + * cluster loops. + * + * @param[inout] fs Information about the filesystem + * @param[out] chain + * @param[in] parent Information about parent directory of this file + * NULL == no parent ('file' is root directory) + * @param[in] offset Partition-relative byte offset of directory entry of interest + * 0 == Root directory + * @param cp + */ +static void add_file(DOS_FS *fs,DOS_FILE ***chain,DOS_FILE *parent, + loff_t offset,FDSC **cp) +{ + DOS_FILE *new; + DIR_ENT de; + FD_TYPE type; + + if (offset) + fs_read(offset,sizeof(DIR_ENT),&de); + else { + /* Construct a DIR_ENT for the root directory */ + memcpy(de.name," ",MSDOS_NAME); + de.attr = ATTR_DIR; + de.size = de.time = de.date = 0; + de.start = CT_LE_W(fs->root_cluster & 0xffff); + de.starthi = CT_LE_W((fs->root_cluster >> 16) & 0xffff); + } + if ((type = file_type(cp,de.name)) != fdt_none) { + if (type == fdt_undelete && (de.attr & ATTR_DIR)) + die("Can't undelete directories."); + file_modify(cp,de.name); + fs_write(offset,1,&de); + } + if (IS_FREE(de.name)) { + lfn_check_orphaned(); + return; + } + if (de.attr == VFAT_LN_ATTR) { + lfn_add_slot(&de,offset); + return; + } + new = qalloc(&mem_queue,sizeof(DOS_FILE)); + new->lfn = lfn_get(&de, &new->lfn_offset); + new->offset = offset; + memcpy(&new->dir_ent,&de,sizeof(de)); + new->next = new->first = NULL; + new->parent = parent; + if (type == fdt_undelete) undelete(fs,new); + **chain = new; + *chain = &new->next; + if (list) { + printf("Checking file %s",path_name(new)); + if (new->lfn) + printf(" (%s)", file_name(new->dir_ent.name) ); /* (8.3) */ + printf("\n"); + } + /* Don't include root directory, '.', or '..' in the total file count */ + if (offset && + strncmp(de.name,MSDOS_DOT,MSDOS_NAME) != 0 && + strncmp(de.name,MSDOS_DOTDOT,MSDOS_NAME) != 0) + ++n_files; + test_file(fs,new,test); /* Bad cluster check */ +} + + +static int subdirs(DOS_FS *fs,DOS_FILE *parent,FDSC **cp); + + +static int scan_dir(DOS_FS *fs,DOS_FILE *this,FDSC **cp) +{ + DOS_FILE **chain; + int i; + unsigned long clu_num; + + chain = &this->first; + i = 0; + clu_num = FSTART(this,fs); + new_dir(); + while (clu_num > 0 && clu_num != -1) { + add_file(fs,&chain,this,cluster_start(fs,clu_num)+(i % fs-> + cluster_size),cp); + i += sizeof(DIR_ENT); + if (!(i % fs->cluster_size)) + if ((clu_num = next_cluster(fs,clu_num)) == 0 || clu_num == -1) + break; + } + lfn_check_orphaned(); + if (check_dir(fs,&this->first,this->offset)) return 0; + if (check_files(fs,this->first)) return 1; + return subdirs(fs,this,cp); +} + + +/** + * Recursively scan subdirectories of the specified parent directory. + * + * @param[inout] fs Information about the filesystem + * @param[in] parent Identifies the directory to scan + * @param[in] cp + * + * @return 0 Success + * @return 1 Error + */ +static int subdirs(DOS_FS *fs,DOS_FILE *parent,FDSC **cp) +{ + DOS_FILE *walk; + + for (walk = parent ? parent->first : root; walk; walk = walk->next) + if (walk->dir_ent.attr & ATTR_DIR) + if (strncmp(walk->dir_ent.name,MSDOS_DOT,MSDOS_NAME) && + strncmp(walk->dir_ent.name,MSDOS_DOTDOT,MSDOS_NAME)) + if (scan_dir(fs,walk,file_cd(cp,walk->dir_ent.name))) return 1; + return 0; +} + + +/** + * Scan all directory and file information for errors. + * + * @param[inout] fs Information about the filesystem + * + * @return 0 Success + * @return 1 Error + */ +int scan_root(DOS_FS *fs) +{ + DOS_FILE **chain; + int i; + + root = NULL; + chain = &root; + new_dir(); + if (fs->root_cluster) { + add_file(fs,&chain,NULL,0,&fp_root); + } + else { + for (i = 0; i < fs->root_entries; i++) + add_file(fs,&chain,NULL,fs->root_start+i*sizeof(DIR_ENT),&fp_root); + } + lfn_check_orphaned(); + (void) check_dir(fs,&root,0); + if (check_files(fs,root)) return 1; + return subdirs(fs,NULL,&fp_root); +} diff --git a/src/check.h b/src/check.h new file mode 100644 index 0000000..a41bb86 --- /dev/null +++ b/src/check.h @@ -0,0 +1,40 @@ +/* check.h - Check and repair a PC/MS-DOS file system + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + + +#ifndef _CHECK_H +#define _CHECK_H + +loff_t alloc_rootdir_entry(DOS_FS *fs, DIR_ENT *de, const char *pattern); + +/* Allocate a free slot in the root directory for a new file. The file name is + constructed after 'pattern', which must include a %d type format for printf + and expand to exactly 11 characters. The name actually used is written into + the 'de' structure, the rest of *de is cleared. The offset returned is to + where in the filesystem the entry belongs. */ + +int scan_root(DOS_FS *fs); + +/* Scans the root directory and recurses into all subdirectories. See check.c + for all the details. Returns a non-zero integer if the file system has to + be checked again. */ + +#endif diff --git a/src/common.c b/src/common.c new file mode 100644 index 0000000..296b7a7 --- /dev/null +++ b/src/common.c @@ -0,0 +1,121 @@ +/* common.c - Common functions + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +/* FAT32, VFAT, Atari format support, and various fixes additions May 1998 + * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */ + + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <stdarg.h> +#include <errno.h> + +#include "common.h" + + +typedef struct _link { + void *data; + struct _link *next; +} LINK; + + +void die(char *msg,...) +{ + va_list args; + + va_start(args,msg); + vfprintf(stderr,msg,args); + va_end(args); + fprintf(stderr,"\n"); + exit(1); +} + + +void pdie(char *msg,...) +{ + va_list args; + + va_start(args,msg); + vfprintf(stderr,msg,args); + va_end(args); + fprintf(stderr,":%s\n",strerror(errno)); + exit(1); +} + + +void *alloc(int size) +{ + void *this; + + if ((this = malloc(size))) return this; + pdie("malloc"); + return NULL; /* for GCC */ +} + + +void *qalloc(void **root,int size) +{ + LINK *link; + + link = alloc(sizeof(LINK)); + link->next = *root; + *root = link; + return link->data = alloc(size); +} + + +void qfree(void **root) +{ + LINK *this; + + while (*root) { + this = (LINK *) *root; + *root = this->next; + free(this->data); + free(this); + } +} + + +int min(int a,int b) +{ + return a < b ? a : b; +} + + +char get_key(char *valid,char *prompt) +{ + int ch,okay; + + while (1) { + if (prompt) printf("%s ",prompt); + fflush(stdout); + while (ch = getchar(), ch == ' ' || ch == '\t'); + if (ch == EOF) exit(1); + if (!strchr(valid,okay = ch)) okay = 0; + while (ch = getchar(), ch != '\n' && ch != EOF); + if (ch == EOF) exit(1); + if (okay) return okay; + printf("Invalid input.\n"); + } +} diff --git a/src/common.h b/src/common.h new file mode 100644 index 0000000..99e0be1 --- /dev/null +++ b/src/common.h @@ -0,0 +1,57 @@ +/* common.h - Common functions + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +# include <asm/types.h> + +#ifndef _COMMON_H +#define _COMMON_H + +void die(char *msg,...) __attribute((noreturn)); + +/* Displays a prinf-style message and terminates the program. */ + +void pdie(char *msg,...) __attribute((noreturn)); + +/* Like die, but appends an error message according to the state of errno. */ + +void *alloc(int size); + +/* mallocs SIZE bytes and returns a pointer to the data. Terminates the program + if malloc fails. */ + +void *qalloc(void **root,int size); + +/* Like alloc, but registers the data area in a list described by ROOT. */ + +void qfree(void **root); + +/* Deallocates all qalloc'ed data areas described by ROOT. */ + +int min(int a,int b); + +/* Returns the smaller integer value of a and b. */ + +char get_key(char *valid,char *prompt); + +/* Displays PROMPT and waits for user input. Only characters in VALID are + accepted. Terminates the program on EOF. Returns the character. */ + +#endif diff --git a/src/dosfsck.c b/src/dosfsck.c new file mode 100644 index 0000000..7657018 --- /dev/null +++ b/src/dosfsck.c @@ -0,0 +1,204 @@ +/* dosfsck.c - User interface + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +/* FAT32, VFAT, Atari format support, and various fixes additions May 1998 + * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */ + + +#include "version.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdlib.h> +#include <unistd.h> +#include <getopt.h> + +#include "common.h" +#include "dosfsck.h" +#include "io.h" +#include "boot.h" +#include "fat.h" +#include "file.h" +#include "check.h" + + +int interactive = 0,rw = 0,list = 0,test = 0,verbose = 0,write_immed = 0; +int atari_format = 0; +unsigned n_files = 0; +void *mem_queue = NULL; + + +static void usage(char *name) +{ + fprintf(stderr,"usage: %s [-aAflrtvVwy] [-d path -d ...] " + "[-u path -u ...]\n%15sdevice\n",name,""); + fprintf(stderr," -a automatically repair the file system\n"); + fprintf(stderr," -A toggle Atari file system format\n"); + fprintf(stderr," -d path drop that file\n"); + fprintf(stderr," -f salvage unused chains to files\n"); + fprintf(stderr," -l list path names\n"); + fprintf(stderr," -n no-op, check non-interactively without changing\n"); + fprintf(stderr," -p same as -a, for compat with other *fsck\n"); + fprintf(stderr," -r interactively repair the file system\n"); + fprintf(stderr," -t test for bad clusters\n"); + fprintf(stderr," -u path try to undelete that (non-directory) file\n"); + fprintf(stderr," -v verbose mode\n"); + fprintf(stderr," -V perform a verification pass\n"); + fprintf(stderr," -w write changes to disk immediately\n"); + fprintf(stderr," -y same as -a, for compat with other *fsck\n"); + exit(2); +} + + +/* + * ++roman: On m68k, check if this is an Atari; if yes, turn on Atari variant + * of MS-DOS filesystem by default. + */ +static void check_atari( void ) +{ +#ifdef __mc68000__ + FILE *f; + char line[128], *p; + + if (!(f = fopen( "/proc/hardware", "r" ))) { + perror( "/proc/hardware" ); + return; + } + + while( fgets( line, sizeof(line), f ) ) { + if (strncmp( line, "Model:", 6 ) == 0) { + p = line + 6; + p += strspn( p, " \t" ); + if (strncmp( p, "Atari ", 6 ) == 0) + atari_format = 1; + break; + } + } + fclose( f ); +#endif +} + + +int main(int argc,char **argv) +{ + DOS_FS fs; + int salvage_files,verify,c; + unsigned n_files_check=0, n_files_verify=0; + unsigned long free_clusters; + + memset(&fs, 0, sizeof(fs)); + rw = salvage_files = verify = 0; + interactive = 1; + check_atari(); + + while ((c = getopt(argc,argv,"Aad:flnprtu:vVwy")) != EOF) + switch (c) { + case 'A': /* toggle Atari format */ + atari_format = !atari_format; + break; + case 'a': + case 'p': + case 'y': + rw = 1; + interactive = 0; + salvage_files = 1; + break; + case 'd': + file_add(optarg,fdt_drop); + break; + case 'f': + salvage_files = 1; + break; + case 'l': + list = 1; + break; + case 'n': + rw = 0; + interactive = 0; + break; + case 'r': + rw = 1; + interactive = 1; + break; + case 't': + test = 1; + break; + case 'u': + file_add(optarg,fdt_undelete); + break; + case 'v': + verbose = 1; + printf("dosfsck " VERSION " (" VERSION_DATE ")\n"); + break; + case 'V': + verify = 1; + break; + case 'w': + write_immed = 1; + break; + default: + usage(argv[0]); + } + if ((test || write_immed) && !rw) { + fprintf(stderr,"-t and -w require -a or -r\n"); + exit(2); + } + if (optind != argc-1) usage(argv[0]); + + printf( "dosfsck " VERSION ", " VERSION_DATE ", FAT32, LFN\n" ); + fs_open(argv[optind],rw); + read_boot(&fs); + if (verify) printf("Starting check/repair pass.\n"); + while (read_fat(&fs), scan_root(&fs)) qfree(&mem_queue); + if (test) fix_bad(&fs); + if (salvage_files) reclaim_file(&fs); + else reclaim_free(&fs); + free_clusters = update_free(&fs); + file_unused(); + qfree(&mem_queue); + n_files_check = n_files; + if (verify) { + n_files = 0; + printf("Starting verification pass.\n"); + read_fat(&fs); + scan_root(&fs); + reclaim_free(&fs); + qfree(&mem_queue); + n_files_verify = n_files; + } + + if (fs_changed()) { + if (rw) { + if (interactive) + rw = get_key("yn","Perform changes ? (y/n)") == 'y'; + else printf("Performing changes.\n"); + } + else + printf("Leaving file system unchanged.\n"); + } + + printf( "%s: %u files, %lu/%lu clusters\n", argv[optind], + n_files, fs.clusters - free_clusters, fs.clusters ); + + return fs_close(rw) ? 1 : 0; +} diff --git a/src/dosfsck.h b/src/dosfsck.h new file mode 100644 index 0000000..25a15ed --- /dev/null +++ b/src/dosfsck.h @@ -0,0 +1,214 @@ +/* dosfsck.h - Common data structures and global variables + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +/* FAT32, VFAT, Atari format support, and various fixes additions May 1998 + * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */ + + +#ifndef _DOSFSCK_H +#define _DOSFSCK_H + +#include <sys/types.h> +#define _LINUX_STAT_H /* hack to avoid inclusion of <linux/stat.h> */ +#define _LINUX_STRING_H_ /* hack to avoid inclusion of <linux/string.h>*/ +#define _LINUX_FS_H /* hack to avoid inclusion of <linux/fs.h> */ + +# include <asm/types.h> +# include <asm/byteorder.h> + +#include <linux/msdos_fs.h> + +#undef CF_LE_W +#undef CF_LE_L +#undef CT_LE_W +#undef CT_LE_L + +#if __BYTE_ORDER == __BIG_ENDIAN +#include <byteswap.h> +#define CF_LE_W(v) bswap_16(v) +#define CF_LE_L(v) bswap_32(v) +#define CT_LE_W(v) CF_LE_W(v) +#define CT_LE_L(v) CF_LE_L(v) +#else +#define CF_LE_W(v) (v) +#define CF_LE_L(v) (v) +#define CT_LE_W(v) (v) +#define CT_LE_L(v) (v) +#endif /* __BIG_ENDIAN */ + +#define VFAT_LN_ATTR (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME) + +/* ++roman: Use own definition of boot sector structure -- the kernel headers' + * name for it is msdos_boot_sector in 2.0 and fat_boot_sector in 2.1 ... */ +struct boot_sector { + __u8 ignored[3]; /* Boot strap short or near jump */ + __u8 system_id[8]; /* Name - can be used to special case + partition manager volumes */ + __u8 sector_size[2]; /* bytes per logical sector */ + __u8 cluster_size; /* sectors/cluster */ + __u16 reserved; /* reserved sectors */ + __u8 fats; /* number of FATs */ + __u8 dir_entries[2]; /* root directory entries */ + __u8 sectors[2]; /* number of sectors */ + __u8 media; /* media code (unused) */ + __u16 fat_length; /* sectors/FAT */ + __u16 secs_track; /* sectors per track */ + __u16 heads; /* number of heads */ + __u32 hidden; /* hidden sectors (unused) */ + __u32 total_sect; /* number of sectors (if sectors == 0) */ + + /* The following fields are only used by FAT32 */ + __u32 fat32_length; /* sectors/FAT */ + __u16 flags; /* bit 8: fat mirroring, low 4: active fat */ + __u8 version[2]; /* major, minor filesystem version */ + __u32 root_cluster; /* first cluster in root directory */ + __u16 info_sector; /* filesystem info sector */ + __u16 backup_boot; /* backup boot sector */ + __u8 reserved2[12]; /* Unused */ + + __u8 drive_number; /* Logical Drive Number */ + __u8 reserved3; /* Unused */ + + __u8 extended_sig; /* Extended Signature (0x29) */ + __u32 serial; /* Serial number */ + __u8 label[11]; /* FS label */ + __u8 fs_type[8]; /* FS Type */ + + /* fill up to 512 bytes */ + __u8 junk[422]; +} __attribute__ ((packed)); + +struct boot_sector_16 { + __u8 ignored[3]; /* Boot strap short or near jump */ + __u8 system_id[8]; /* Name - can be used to special case + partition manager volumes */ + __u8 sector_size[2]; /* bytes per logical sector */ + __u8 cluster_size; /* sectors/cluster */ + __u16 reserved; /* reserved sectors */ + __u8 fats; /* number of FATs */ + __u8 dir_entries[2]; /* root directory entries */ + __u8 sectors[2]; /* number of sectors */ + __u8 media; /* media code (unused) */ + __u16 fat_length; /* sectors/FAT */ + __u16 secs_track; /* sectors per track */ + __u16 heads; /* number of heads */ + __u32 hidden; /* hidden sectors (unused) */ + __u32 total_sect; /* number of sectors (if sectors == 0) */ + + __u8 drive_number; /* Logical Drive Number */ + __u8 reserved2; /* Unused */ + + __u8 extended_sig; /* Extended Signature (0x29) */ + __u32 serial; /* Serial number */ + __u8 label[11]; /* FS label */ + __u8 fs_type[8]; /* FS Type */ + + /* fill up to 512 bytes */ + __u8 junk[450]; +} __attribute__ ((packed)); + +struct info_sector { + __u32 magic; /* Magic for info sector ('RRaA') */ + __u8 junk[0x1dc]; + __u32 reserved1; /* Nothing as far as I can tell */ + __u32 signature; /* 0x61417272 ('rrAa') */ + __u32 free_clusters; /* Free cluster count. -1 if unknown */ + __u32 next_cluster; /* Most recently allocated cluster. */ + __u32 reserved2[3]; + __u16 reserved3; + __u16 boot_sign; +}; + +typedef struct { + __u8 name[8],ext[3]; /* name and extension */ + __u8 attr; /* attribute bits */ + __u8 lcase; /* Case for base and extension */ + __u8 ctime_ms; /* Creation time, milliseconds */ + __u16 ctime; /* Creation time */ + __u16 cdate; /* Creation date */ + __u16 adate; /* Last access date */ + __u16 starthi; /* High 16 bits of cluster in FAT32 */ + __u16 time,date,start;/* time, date and first cluster */ + __u32 size; /* file size (in bytes) */ +} __attribute__ ((packed)) DIR_ENT; + +typedef struct _dos_file { + DIR_ENT dir_ent; + char *lfn; + loff_t offset; + loff_t lfn_offset; + struct _dos_file *parent; /* parent directory */ + struct _dos_file *next; /* next entry */ + struct _dos_file *first; /* first entry (directory only) */ +} DOS_FILE; + +typedef struct { + unsigned long value; + unsigned long reserved; +} FAT_ENTRY; + +typedef struct { + int nfats; + loff_t fat_start; + unsigned int fat_size; /* unit is bytes */ + unsigned int fat_bits; /* size of a FAT entry */ + unsigned int eff_fat_bits; /* # of used bits in a FAT entry */ + unsigned long root_cluster; /* 0 for old-style root dir */ + loff_t root_start; + unsigned int root_entries; + loff_t data_start; + unsigned int cluster_size; + unsigned long clusters; + loff_t fsinfo_start; /* 0 if not present */ + long free_clusters; + loff_t backupboot_start; /* 0 if not present */ + unsigned char *fat; + DOS_FILE **cluster_owner; + char *label; +} DOS_FS; + +#ifndef offsetof +#define offsetof(t,e) ((int)&(((t *)0)->e)) +#endif + +extern int interactive,rw,list,verbose,test,write_immed; +extern int atari_format; +extern unsigned n_files; +extern void *mem_queue; + +/* value to use as end-of-file marker */ +#define FAT_EOF(fs) ((atari_format ? 0xfff : 0xff8) | FAT_EXTD(fs)) +#define FAT_IS_EOF(fs,v) ((unsigned long)(v) >= (0xff8|FAT_EXTD(fs))) +/* value to mark bad clusters */ +#define FAT_BAD(fs) (0xff7 | FAT_EXTD(fs)) +/* range of values used for bad clusters */ +#define FAT_MIN_BAD(fs) ((atari_format ? 0xff0 : 0xff7) | FAT_EXTD(fs)) +#define FAT_MAX_BAD(fs) ((atari_format ? 0xff7 : 0xff7) | FAT_EXTD(fs)) +#define FAT_IS_BAD(fs,v) ((v) >= FAT_MIN_BAD(fs) && (v) <= FAT_MAX_BAD(fs)) + +/* return -16 as a number with fs->fat_bits bits */ +#define FAT_EXTD(fs) (((1 << fs->eff_fat_bits)-1) & ~0xf) + +/* marker for files with no 8.3 name */ +#define FAT_NO_83NAME 32 + +#endif diff --git a/src/dosfslabel.c b/src/dosfslabel.c new file mode 100644 index 0000000..aabde3f --- /dev/null +++ b/src/dosfslabel.c @@ -0,0 +1,127 @@ +/* dosfslabel.c - User interface + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + Copyright (C) 2007 Red Hat, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +#include "version.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdlib.h> +#include <unistd.h> +#include <getopt.h> + +#include "common.h" +#include "dosfsck.h" +#include "io.h" +#include "boot.h" +#include "fat.h" +#include "file.h" +#include "check.h" + + +int interactive = 0,rw = 0,list = 0,test = 0,verbose = 0,write_immed = 0; +int atari_format = 0; +unsigned n_files = 0; +void *mem_queue = NULL; + + +static void usage(int error) +{ + FILE *f = error ? stderr : stdout; + int status = error ? 1 : 0; + + fprintf(f,"usage: dosfslabel device [label]\n"); + exit(status); +} + +/* + * ++roman: On m68k, check if this is an Atari; if yes, turn on Atari variant + * of MS-DOS filesystem by default. + */ +static void check_atari( void ) +{ +#ifdef __mc68000__ + FILE *f; + char line[128], *p; + + if (!(f = fopen( "/proc/hardware", "r" ))) { + perror( "/proc/hardware" ); + return; + } + + while( fgets( line, sizeof(line), f ) ) { + if (strncmp( line, "Model:", 6 ) == 0) { + p = line + 6; + p += strspn( p, " \t" ); + if (strncmp( p, "Atari ", 6 ) == 0) + atari_format = 1; + break; + } + } + fclose( f ); +#endif +} + + +int main(int argc, char *argv[]) +{ + DOS_FS fs; + rw = 0; + + char *device = NULL; + char *label = NULL; + + check_atari(); + + if (argc < 2 || argc > 3) + usage(1); + + if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) + usage(0); + else if (!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version")) { + printf( "dosfslabel " VERSION ", " VERSION_DATE ", FAT32, LFN\n" ); + exit(0); + } + + device = argv[1]; + if (argc == 3) { + label = argv[2]; + if (strlen(label) > 11) { + fprintf(stderr, + "dosfslabel: labels can be no longer than 11 characters\n"); + exit(1); + } + rw = 1; + } + + fs_open(device, rw); + read_boot(&fs); + if (!rw) { + fprintf(stdout, "%s\n", fs.label); + exit(0); + } + + write_label(&fs, label); + fs_close(rw); + return 0; +} diff --git a/src/fat.c b/src/fat.c new file mode 100644 index 0000000..329e3cd --- /dev/null +++ b/src/fat.c @@ -0,0 +1,558 @@ +/* fat.c - Read/write access to the FAT + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +/* FAT32, VFAT, Atari format support, and various fixes additions May 1998 + * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */ + + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "common.h" +#include "dosfsck.h" +#include "io.h" +#include "check.h" +#include "fat.h" + + +/** + * Fetch the FAT entry for a specified cluster. + * + * @param[out] entry Cluster to which cluster of interest is linked + * @param[in] fat FAT table for the partition + * @param[in] cluster Cluster of interest + * @param[in] fs Information from the FAT boot sectors (bits per FAT entry) + */ +void get_fat(FAT_ENTRY *entry,void *fat,unsigned long cluster,DOS_FS *fs) +{ + unsigned char *ptr; + + switch(fs->fat_bits) { + case 12: + ptr = &((unsigned char *) fat)[cluster*3/2]; + entry->value = 0xfff & (cluster & 1 ? (ptr[0] >> 4) | (ptr[1] << 4) : + (ptr[0] | ptr[1] << 8)); + break; + case 16: + entry->value = CF_LE_W(((unsigned short *) fat)[cluster]); + break; + case 32: + /* According to M$, the high 4 bits of a FAT32 entry are reserved and + * are not part of the cluster number. So we cut them off. */ + { + unsigned long e = CF_LE_L(((unsigned int *) fat)[cluster]); + entry->value = e & 0xfffffff; + entry->reserved = e >> 28; + } + break; + default: + die("Bad FAT entry size: %d bits.",fs->fat_bits); + } +} + + +/** + * Build a bookkeeping structure from the partition's FAT table. + * If the partition has multiple FATs and they don't agree, try to pick a winner, + * and queue a command to overwrite the loser. + * One error that is fixed here is a cluster that links to something out of range. + * + * @param[inout] fs Information about the filesystem + */ +void read_fat(DOS_FS *fs) +{ + int eff_size; + unsigned long i; + void *first,*second = NULL; + int first_ok,second_ok; + unsigned long total_num_clusters; + + /* Clean up from previous pass */ + free(fs->fat); + free(fs->cluster_owner); + fs->fat = NULL; + fs->cluster_owner = NULL; + + total_num_clusters = fs->clusters + 2UL; + eff_size = (total_num_clusters*fs->fat_bits+7)/8ULL; + first = alloc(eff_size); + fs_read(fs->fat_start,eff_size,first); + if (fs->nfats > 1) { + second = alloc(eff_size); + fs_read(fs->fat_start+fs->fat_size,eff_size,second); + } + if (second && memcmp(first,second,eff_size) != 0) { + FAT_ENTRY first_media, second_media; + get_fat(&first_media,first,0,fs); + get_fat(&second_media,second,0,fs); + first_ok = (first_media.value & FAT_EXTD(fs)) == FAT_EXTD(fs); + second_ok = (second_media.value & FAT_EXTD(fs)) == FAT_EXTD(fs); + if (first_ok && !second_ok) { + printf("FATs differ - using first FAT.\n"); + fs_write(fs->fat_start+fs->fat_size,eff_size,first); + } + if (!first_ok && second_ok) { + printf("FATs differ - using second FAT.\n"); + fs_write(fs->fat_start,eff_size,second); + memcpy(first,second,eff_size); + } + if (first_ok && second_ok) { + if (interactive) { + printf("FATs differ but appear to be intact. Use which FAT ?\n" + "1) Use first FAT\n2) Use second FAT\n"); + if (get_key("12","?") == '1') { + fs_write(fs->fat_start+fs->fat_size,eff_size,first); + } else { + fs_write(fs->fat_start,eff_size,second); + memcpy(first,second,eff_size); + } + } + else { + printf("FATs differ but appear to be intact. Using first " + "FAT.\n"); + fs_write(fs->fat_start+fs->fat_size,eff_size,first); + } + } + if (!first_ok && !second_ok) { + printf("Both FATs appear to be corrupt. Giving up.\n"); + exit(1); + } + } + if (second) { + free(second); + } + fs->fat = (unsigned char*) first; + + fs->cluster_owner = alloc(total_num_clusters * sizeof(DOS_FILE *)); + memset(fs->cluster_owner, 0, (total_num_clusters * sizeof(DOS_FILE *))); + + /* Truncate any cluster chains that link to something out of range */ + for (i = 2; i < fs->clusters+2; i++) { + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, i, fs); + if (curEntry.value == 1) { + printf("Cluster %ld out of range (1). Setting to EOF.\n", + i-2); + set_fat(fs, i, -1); + } + if (curEntry.value >= fs->clusters+2 && + (curEntry.value < FAT_MIN_BAD(fs))) { + printf("Cluster %ld out of range (%ld > %ld). Setting to EOF.\n", + i-2, curEntry.value, fs->clusters+2-1); + set_fat(fs,i,-1); + } + } +} + + +/** + * Update the FAT entry for a specified cluster + * (i.e., change the cluster it links to). + * Queue a command to write out this change. + * + * @param[in,out] fs Information about the filesystem + * @param[in] cluster Cluster to change + * @param[in] new Cluster to link to + * Special values: + * 0 == free cluster + * -1 == end-of-chain + * -2 == bad cluster + */ +void set_fat(DOS_FS *fs,unsigned long cluster,unsigned long new) +{ + unsigned char *data = NULL; + int size; + loff_t offs; + + if ((long)new == -1) + new = FAT_EOF(fs); + else if ((long)new == -2) + new = FAT_BAD(fs); + switch( fs->fat_bits ) { + case 12: + data = fs->fat + cluster*3/2; + offs = fs->fat_start+cluster*3/2; + if (cluster & 1) { + FAT_ENTRY prevEntry; + get_fat(&prevEntry, fs->fat, cluster-1, fs); + data[0] = ((new & 0xf) << 4) | (prevEntry.value >> 8); + data[1] = new >> 4; + } + else { + FAT_ENTRY subseqEntry; + get_fat(&subseqEntry, fs->fat, cluster+1, fs); + data[0] = new & 0xff; + data[1] = (new >> 8) | (cluster == fs->clusters-1 ? 0 : + (0xff & subseqEntry.value) << 4); + } + size = 2; + break; + case 16: + data = fs->fat + cluster*2; + offs = fs->fat_start+cluster*2; + *(unsigned short *) data = CT_LE_W(new); + size = 2; + break; + case 32: + { + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, cluster, fs); + + data = fs->fat + cluster*4; + offs = fs->fat_start+cluster*4; + /* According to M$, the high 4 bits of a FAT32 entry are reserved and + * are not part of the cluster number. So we never touch them. */ + *(unsigned long *) data = CT_LE_L( (new & 0xfffffff) | + (curEntry.reserved << 28) ); + size = 4; + } + break; + default: + die("Bad FAT entry size: %d bits.",fs->fat_bits); + } + fs_write(offs,size,data); + if (fs->nfats > 1) { + fs_write(offs+fs->fat_size,size,data); + } +} + + +int bad_cluster(DOS_FS *fs,unsigned long cluster) +{ + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, cluster, fs); + + return FAT_IS_BAD(fs, curEntry.value); +} + + +/** + * Get the cluster to which the specified cluster is linked. + * If the linked cluster is marked bad, abort. + * + * @param[in] fs Information about the filesystem + * @param[in] cluster Cluster to follow + * + * @return -1 'cluster' is at the end of the chain + * @return Other values Next cluster in this chain + */ +unsigned long next_cluster(DOS_FS *fs,unsigned long cluster) +{ + unsigned long value; + FAT_ENTRY curEntry; + + get_fat(&curEntry, fs->fat, cluster, fs); + + value = curEntry.value; + if (FAT_IS_BAD(fs,value)) + die("Internal error: next_cluster on bad cluster"); + return FAT_IS_EOF(fs,value) ? -1 : value; +} + + +loff_t cluster_start(DOS_FS *fs,unsigned long cluster) +{ + return fs->data_start+((loff_t)cluster-2)*(unsigned long long)fs->cluster_size; +} + + +/** + * Update internal bookkeeping to show that the specified cluster belongs + * to the specified dentry. + * + * @param[in,out] fs Information about the filesystem + * @param[in] cluster Cluster being assigned + * @param[in] owner Information on dentry that owns this cluster + * (may be NULL) + */ +void set_owner(DOS_FS *fs,unsigned long cluster,DOS_FILE *owner) +{ + if (fs->cluster_owner == NULL) + die("Internal error: attempt to set owner in non-existent table"); + + if (owner && fs->cluster_owner[cluster] && (fs->cluster_owner[cluster] != owner)) + die("Internal error: attempt to change file owner"); + fs->cluster_owner[cluster] = owner; +} + + +DOS_FILE *get_owner(DOS_FS *fs,unsigned long cluster) +{ + if (fs->cluster_owner == NULL) + return NULL; + else + return fs->cluster_owner[cluster]; +} + + +void fix_bad(DOS_FS *fs) +{ + unsigned long i; + + if (verbose) + printf("Checking for bad clusters.\n"); + for (i = 2; i < fs->clusters+2; i++) { + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, i, fs); + + if (!get_owner(fs,i) && !FAT_IS_BAD(fs, curEntry.value)) + if (!fs_test(cluster_start(fs,i),fs->cluster_size)) { + printf("Cluster %lu is unreadable.\n",i); + set_fat(fs,i,-2); + } + } +} + + +void reclaim_free(DOS_FS *fs) +{ + int reclaimed; + unsigned long i; + + if (verbose) + printf("Checking for unused clusters.\n"); + reclaimed = 0; + for (i = 2; i < fs->clusters+2; i++) { + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, i, fs); + + if (!get_owner(fs,i) && curEntry.value && + !FAT_IS_BAD(fs, curEntry.value)) { + set_fat(fs,i,0); + reclaimed++; + } + } + if (reclaimed) + printf("Reclaimed %d unused cluster%s (%llu bytes).\n",reclaimed, + reclaimed == 1 ? "" : "s",(unsigned long long)reclaimed*fs->cluster_size); +} + + +/** + * Assign the specified owner to all orphan chains (except cycles). + * Break cross-links between orphan chains. + * + * @param[in,out] fs Information about the filesystem + * @param[in] owner dentry to be assigned ownership of orphans + * @param[in,out] num_refs For each orphan cluster [index], how many + * clusters link to it. + * @param[in] start_cluster Where to start scanning for orphans + */ +static void tag_free(DOS_FS *fs, DOS_FILE *owner, unsigned long *num_refs, + unsigned long start_cluster) +{ + int prev; + unsigned long i,walk; + + if (start_cluster == 0) + start_cluster = 2; + + for (i = start_cluster; i < fs->clusters+2; i++) { + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, i, fs); + + /* If the current entry is the head of an un-owned chain... */ + if (curEntry.value && !FAT_IS_BAD(fs, curEntry.value) && + !get_owner(fs, i) && !num_refs[i]) { + prev = 0; + /* Walk the chain, claiming ownership as we go */ + for (walk = i; walk != -1; + walk = next_cluster(fs,walk)) { + if (!get_owner(fs, walk)) { + set_owner(fs, walk, owner); + } else { + /* We've run into cross-links between orphaned chains, + * or a cycle with a tail. + * Terminate this orphan chain (break the link) + */ + set_fat(fs,prev,-1); + + /* This is not necessary because 'walk' is owned and thus + * will never become the head of a chain (the only case + * that would matter during reclaim to files). + * It's easier to decrement than to prove that it's + * unnecessary. + */ + num_refs[walk]--; + break; + } + prev = walk; + } + } + } +} + +/** + * Recover orphan chains to files, handling any cycles or cross-links. + * + * @param[in,out] fs Information about the filesystem + */ +void reclaim_file(DOS_FS *fs) +{ + DOS_FILE orphan; + int reclaimed,files; + int changed = 0; + unsigned long i,next,walk; + unsigned long *num_refs = NULL; /* Only for orphaned clusters */ + unsigned long total_num_clusters; + + if (verbose) + printf("Reclaiming unconnected clusters.\n"); + + total_num_clusters = fs->clusters + 2UL; + num_refs = alloc(total_num_clusters * sizeof(unsigned long)); + memset(num_refs, 0, (total_num_clusters * sizeof(unsigned long))); + + /* Guarantee that all orphan chains (except cycles) end cleanly + * with an end-of-chain mark. + */ + + for (i = 2; i < total_num_clusters; i++) { + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, i, fs); + + next = curEntry.value; + if (!get_owner(fs,i) && next && next < fs->clusters+2) { + /* Cluster is linked, but not owned (orphan) */ + FAT_ENTRY nextEntry; + get_fat(&nextEntry, fs->fat, next, fs); + + /* Mark it end-of-chain if it links into an owned cluster, + * a free cluster, or a bad cluster. + */ + if (get_owner(fs,next) || !nextEntry.value || + FAT_IS_BAD(fs, nextEntry.value)) set_fat(fs,i,-1); + else + num_refs[next]++; + } + } + + /* Scan until all the orphans are accounted for, + * and all cycles and cross-links are broken + */ + do { + tag_free(fs, &orphan, num_refs, changed); + changed = 0; + + /* Any unaccounted-for orphans must be part of a cycle */ + for (i = 2; i < total_num_clusters; i++) { + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, i, fs); + + if (curEntry.value && !FAT_IS_BAD(fs, curEntry.value) && + !get_owner(fs, i)) { + if (!num_refs[curEntry.value]--) + die("Internal error: num_refs going below zero"); + set_fat(fs,i,-1); + changed = curEntry.value; + printf("Broke cycle at cluster %lu in free chain.\n",i); + + /* If we've created a new chain head, + * tag_free() can claim it + */ + if (num_refs[curEntry.value] == 0) + break; + } + } + } + while (changed); + + /* Now we can start recovery */ + files = reclaimed = 0; + for (i = 2; i < total_num_clusters; i++) + /* If this cluster is the head of an orphan chain... */ + if (get_owner(fs, i) == &orphan && !num_refs[i]) { + DIR_ENT de; + loff_t offset; + files++; + offset = alloc_rootdir_entry(fs,&de,"FSCK%04dREC"); + de.start = CT_LE_W(i&0xffff); + if (fs->fat_bits == 32) + de.starthi = CT_LE_W(i>>16); + for (walk = i; walk > 0 && walk != -1; + walk = next_cluster(fs,walk)) { + de.size = CT_LE_L(CF_LE_L(de.size)+fs->cluster_size); + reclaimed++; + } + fs_write(offset,sizeof(DIR_ENT),&de); + } + if (reclaimed) + printf("Reclaimed %d unused cluster%s (%llu bytes) in %d chain%s.\n", + reclaimed,reclaimed == 1 ? "" : "s",(unsigned long long)reclaimed*fs->cluster_size,files, + files == 1 ? "" : "s"); + + free(num_refs); +} + + +unsigned long update_free(DOS_FS *fs) +{ + unsigned long i; + unsigned long free = 0; + int do_set = 0; + + for (i = 2; i < fs->clusters+2; i++) { + FAT_ENTRY curEntry; + get_fat(&curEntry, fs->fat, i, fs); + + if (!get_owner(fs,i) && !FAT_IS_BAD(fs, curEntry.value)) + ++free; + } + + if (!fs->fsinfo_start) + return free; + + if (verbose) + printf("Checking free cluster summary.\n"); + if (fs->free_clusters != 0xFFFFFFFF) { + if (free != fs->free_clusters) { + printf( "Free cluster summary wrong (%ld vs. really %ld)\n", + fs->free_clusters,free); + if (interactive) + printf( "1) Correct\n2) Don't correct\n" ); + else printf( " Auto-correcting.\n" ); + if (!interactive || get_key("12","?") == '1') + do_set = 1; + } + } + else { + printf( "Free cluster summary uninitialized (should be %ld)\n", free ); + if (rw) { + if (interactive) + printf( "1) Set it\n2) Leave it uninitialized\n" ); + else printf( " Auto-setting.\n" ); + if (!interactive || get_key("12","?") == '1') + do_set = 1; + } + } + + if (do_set) { + unsigned long le_free = CT_LE_L(free); + fs->free_clusters = free; + fs_write(fs->fsinfo_start+offsetof(struct info_sector,free_clusters), + sizeof(le_free), &le_free); + } + + return free; +} diff --git a/src/fat.h b/src/fat.h new file mode 100644 index 0000000..40bb6d0 --- /dev/null +++ b/src/fat.h @@ -0,0 +1,85 @@ +/* fat.h - Read/write access to the FAT + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + + +#ifndef _FAT_H +#define _FAT_H + +void read_fat(DOS_FS *fs); + +/* Loads the FAT of the file system described by FS. Initializes the FAT, + replaces broken FATs and rejects invalid cluster entries. */ + +void get_fat(FAT_ENTRY *entry, void *fat, unsigned long cluster, DOS_FS *fs); + +/* Retrieve the FAT entry (next chained cluster) for CLUSTER. */ + +void set_fat(DOS_FS *fs,unsigned long cluster,unsigned long new); + +/* Changes the value of the CLUSTERth cluster of the FAT of FS to NEW. Special + values of NEW are -1 (EOF, 0xff8 or 0xfff8) and -2 (bad sector, 0xff7 or + 0xfff7) */ + +int bad_cluster(DOS_FS *fs,unsigned long cluster); + +/* Returns a non-zero integer if the CLUSTERth cluster is marked as bad or zero + otherwise. */ + +unsigned long next_cluster(DOS_FS *fs,unsigned long cluster); + +/* Returns the number of the cluster following CLUSTER, or -1 if this is the + last cluster of the respective cluster chain. CLUSTER must not be a bad + cluster. */ + +loff_t cluster_start(DOS_FS *fs,unsigned long cluster); + +/* Returns the byte offset of CLUSTER, relative to the respective device. */ + +void set_owner(DOS_FS *fs,unsigned long cluster,DOS_FILE *owner); + +/* Sets the owner pointer of the respective cluster to OWNER. If OWNER was NULL + before, it can be set to NULL or any non-NULL value. Otherwise, only NULL is + accepted as the new value. */ + +DOS_FILE *get_owner(DOS_FS *fs,unsigned long cluster); + +/* Returns the owner of the repective cluster or NULL if the cluster has no + owner. */ + +void fix_bad(DOS_FS *fs); + +/* Scans the disk for currently unused bad clusters and marks them as bad. */ + +void reclaim_free(DOS_FS *fs); + +/* Marks all allocated, but unused clusters as free. */ + +void reclaim_file(DOS_FS *fs); + +/* Scans the FAT for chains of allocated, but unused clusters and creates files + for them in the root directory. Also tries to fix all inconsistencies (e.g. + loops, shared clusters, etc.) in the process. */ + +unsigned long update_free(DOS_FS *fs); + +/* Updates free cluster count in FSINFO sector. */ + +#endif diff --git a/src/file.c b/src/file.c new file mode 100644 index 0000000..cb8a94e --- /dev/null +++ b/src/file.c @@ -0,0 +1,269 @@ +/* file.c - Additional file attributes + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +/* FAT32, VFAT, Atari format support, and various fixes additions May 1998 + * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */ + + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <ctype.h> +#include <unistd.h> + +#define _LINUX_STAT_H /* hack to avoid inclusion of <linux/stat.h> */ +#define _LINUX_STRING_H_ /* hack to avoid inclusion of <linux/string.h>*/ +#define _LINUX_FS_H /* hack to avoid inclusion of <linux/fs.h> */ + +# include <asm/types.h> + +#include <linux/msdos_fs.h> + +#include "common.h" +#include "file.h" + + +FDSC *fp_root = NULL; + + +static void put_char(char **p,unsigned char c) +{ + if ((c >= ' ' && c < 0x7f) || c >= 0xa0) *(*p)++ = c; + else { + *(*p)++ = '\\'; + *(*p)++ = '0'+(c >> 6); + *(*p)++ = '0'+((c >> 3) & 7); + *(*p)++ = '0'+(c & 7); + } +} + + +/** + * Construct the "pretty-printed" representation of the name in a short directory entry. + * + * @param[in] fixed Pointer to name[0] of a DIR_ENT + * + * @return Pointer to static string containing pretty "8.3" equivalent of the + * name in the directory entry. + */ +char *file_name(unsigned char *fixed) +{ + static char path[MSDOS_NAME*4+2]; + char *p; + int i,j; + + p = path; + for (i = j = 0; i < 8; i++) + if (fixed[i] != ' ') { + while (j++ < i) *p++ = ' '; + put_char(&p,fixed[i]); + } + if (strncmp(fixed+8," ",3)) { + *p++ = '.'; + for (i = j = 0; i < 3; i++) + if (fixed[i+8] != ' ') { + while (j++ < i) *p++ = ' '; + put_char(&p,fixed[i+8]); + } + } + *p = 0; + return path; +} + + +int file_cvt(unsigned char *name,unsigned char *fixed) +{ + unsigned char c; + int size,ext,cnt; + + size = 8; + ext = 0; + while (*name) { + c = *name; + if (c < ' ' || c > 0x7e || strchr("*?<>|\"/",c)) { + printf("Invalid character in name. Use \\ooo for special " + "characters.\n"); + return 0; + } + if (c == '.') { + if (ext) { + printf("Duplicate dots in name.\n"); + return 0; + } + while (size--) *fixed++ = ' '; + size = 3; + ext = 1; + name++; + continue; + } + if (c == '\\') { + c = 0; + for (cnt = 3; cnt; cnt--) { + if (*name < '0' || *name > '7') { + printf("Invalid octal character.\n"); + return 0; + } + c = c*8+*name++-'0'; + } + if (cnt < 4) { + printf("Expected three octal digits.\n"); + return 0; + } + name += 3; + } + if (islower(c)) c = toupper(c); + if (size) { + *fixed++ = c; + size--; + } + name++; + } + if (*name || size == 8) return 0; + if (!ext) { + while (size--) *fixed++ = ' '; + size = 3; + } + while (size--) *fixed++ = ' '; + return 1; +} + + +void file_add(char *path,FD_TYPE type) +{ + FDSC **current,*walk; + char name[MSDOS_NAME]; + char *here; + + current = &fp_root; + if (*path != '/') die("%s: Absolute path required.",path); + path++; + while (1) { + if ((here = strchr(path,'/'))) *here = 0; + if (!file_cvt(path,name)) exit(2); + for (walk = *current; walk; walk = walk->next) + if (!here && (!strncmp(name,walk->name,MSDOS_NAME) || (type == + fdt_undelete && !strncmp(name+1,walk->name+1,MSDOS_NAME-1)))) + die("Ambiguous name: \"%s\"",path); + else if (here && !strncmp(name,walk->name,MSDOS_NAME)) break; + if (!walk) { + walk = alloc(sizeof(FDSC)); + strncpy(walk->name,name,MSDOS_NAME); + walk->type = here ? fdt_none : type; + walk->first = NULL; + walk->next = *current; + *current = walk; + } + current = &walk->first; + if (!here) break; + *here = '/'; + path = here+1; + } +} + + +FDSC **file_cd(FDSC **curr,char *fixed) +{ + FDSC **walk; + + if (!curr || !*curr) return NULL; + for (walk = curr; *walk; walk = &(*walk)->next) + if (!strncmp((*walk)->name,fixed,MSDOS_NAME) && (*walk)->first) + return &(*walk)->first; + return NULL; +} + + +static FDSC **file_find(FDSC **dir,char *fixed) +{ + if (!dir || !*dir) return NULL; + if (*(unsigned char *) fixed == DELETED_FLAG) { + while (*dir) { + if (!strncmp((*dir)->name+1,fixed+1,MSDOS_NAME-1) && !(*dir)->first) + return dir; + dir = &(*dir)->next; + } + return NULL; + } + while (*dir) { + if (!strncmp((*dir)->name,fixed,MSDOS_NAME) && !(*dir)->first) + return dir; + dir = &(*dir)->next; + } + return NULL; +} + + +/* Returns the attribute of the file FIXED in directory CURR or FDT_NONE if no + such file exists or if CURR is NULL. */ +FD_TYPE file_type(FDSC **curr,char *fixed) +{ + FDSC **this; + + if ((this = file_find(curr,fixed))) return (*this)->type; + return fdt_none; +} + + +void file_modify(FDSC **curr,char *fixed) +{ + FDSC **this,*next; + + if (!(this = file_find(curr,fixed))) + die("Internal error: file_find failed"); + switch ((*this)->type) { + case fdt_drop: + printf("Dropping %s\n",file_name(fixed)); + *(unsigned char *) fixed = DELETED_FLAG; + break; + case fdt_undelete: + *fixed = *(*this)->name; + printf("Undeleting %s\n",file_name(fixed)); + break; + default: + die("Internal error: file_modify"); + } + next = (*this)->next; + free(*this); + *this = next; +} + + +static void report_unused(FDSC *this) +{ + FDSC *next; + + while (this) { + next = this->next; + if (this->first) report_unused(this->first); + else if (this->type != fdt_none) + printf("Warning: did not %s file %s\n",this->type == fdt_drop ? + "drop" : "undelete",file_name(this->name)); + free(this); + this = next; + } +} + + +void file_unused(void) +{ + report_unused(fp_root); +} diff --git a/src/file.h b/src/file.h new file mode 100644 index 0000000..b38523b --- /dev/null +++ b/src/file.h @@ -0,0 +1,72 @@ +/* file.h - Additional file attributes + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + + +#ifndef _FILE_H +#define _FILE_H + +typedef enum { fdt_none,fdt_drop,fdt_undelete } FD_TYPE; + +typedef struct _fptr { + char name[MSDOS_NAME]; + FD_TYPE type; + struct _fptr *first; /* first entry */ + struct _fptr *next; /* next file in directory */ +} FDSC; + + +extern FDSC *fp_root; + + +char *file_name(unsigned char *fixed); + +/* Returns a pointer to a pretty-printed representation of a fixed MS-DOS file + name. */ + +int file_cvt(unsigned char *name,unsigned char *fixed); + +/* Converts a pretty-printed file name to the fixed MS-DOS format. Returns a + non-zero integer on success, zero on failure. */ + +void file_add(char *path,FD_TYPE type); + +/* Define special attributes for a path. TYPE can be either FDT_DROP or + FDT_UNDELETE. */ + +FDSC **file_cd(FDSC **curr,char *fixed); + +/* Returns a pointer to the directory descriptor of the subdirectory FIXED of + CURR, or NULL if no such subdirectory exists. */ + +FD_TYPE file_type(FDSC **curr,char *fixed); + +/* Returns the attribute of the file FIXED in directory CURR or FDT_NONE if no + such file exists or if CURR is NULL. */ + +void file_modify(FDSC **curr,char *fixed); + +/* Performs the necessary operation on the entry of CURR that is named FIXED. */ + +void file_unused(void); + +/* Displays warnings for all unused file attributes. */ + +#endif diff --git a/src/io.c b/src/io.c new file mode 100644 index 0000000..fb0369e --- /dev/null +++ b/src/io.c @@ -0,0 +1,222 @@ +/* io.c - Virtual disk input/output + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +/* + * Thu Feb 26 01:15:36 CET 1998: Martin Schulze <joey@infodrom.north.de> + * Fixed nasty bug that caused every file with a name like + * xxxxxxxx.xxx to be treated as bad name that needed to be fixed. + */ + +/* FAT32, VFAT, Atari format support, and various fixes additions May 1998 + * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */ + +#define _LARGEFILE64_SOURCE +#include <sys/types.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <sys/stat.h> +#include <sys/ioctl.h> +#include <errno.h> +#include <fcntl.h> +#include <linux/fd.h> + +#include "dosfsck.h" +#include "common.h" +#include "io.h" + + +typedef struct _change { + void *data; + loff_t pos; + int size; + struct _change *next; +} CHANGE; + + +static CHANGE *changes,*last; +static int fd,did_change = 0; + +unsigned device_no; + + +#ifdef __DJGPP__ +#include "volume.h" /* DOS lowlevel disk access functions */ +loff_t llseek(int fd, loff_t offset, int whence) +{ + if ((whence != SEEK_SET) || (fd == 4711)) return -1; /* only those supported */ + return VolumeSeek(offset); +} +#define open OpenVolume +#define close CloseVolume +#define read(a,b,c) ReadVolume(b,c) +#define write(a,b,c) WriteVolume(b,c) +#else +loff_t llseek(int fd, loff_t offset, int whence) +{ + return (loff_t) lseek64(fd, (off64_t)offset, whence); +} +#endif + +void fs_open(char *path,int rw) +{ + struct stat stbuf; + + if ((fd = open(path,rw ? O_RDWR : O_RDONLY)) < 0) { + perror("open"); + exit(6); + } + changes = last = NULL; + did_change = 0; + +#ifndef _DJGPP_ + if (fstat(fd,&stbuf) < 0) + pdie("fstat %s",path); + device_no = S_ISBLK(stbuf.st_mode) ? (stbuf.st_rdev >> 8) & 0xff : 0; +#else + if (IsWorkingOnImageFile()) { + if (fstat(GetVolumeHandle(),&stbuf) < 0) + pdie("fstat image %s",path); + device_no = 0; + } + else { + /* return 2 for floppy, 1 for ramdisk, 7 for loopback */ + /* used by boot.c in Atari mode: floppy always FAT12, */ + /* loopback / ramdisk only FAT12 if usual floppy size, */ + /* harddisk always FAT16 on Atari... */ + device_no = (GetVolumeHandle() < 2) ? 2 : 1; + /* telling "floppy" for A:/B:, "ramdisk" for the rest */ + } +#endif +} + + +/** + * Read data from the partition, accounting for any pending updates that are + * queued for writing. + * + * @param[in] pos Byte offset, relative to the beginning of the partition, + * at which to read + * @param[in] size Number of bytes to read + * @param[out] data Where to put the data read + */ +void fs_read(loff_t pos,int size,void *data) +{ + CHANGE *walk; + int got; + + if (llseek(fd,pos,0) != pos) pdie("Seek to %lld",pos); + if ((got = read(fd,data,size)) < 0) pdie("Read %d bytes at %lld",size,pos); + if (got != size) die("Got %d bytes instead of %d at %lld",got,size,pos); + for (walk = changes; walk; walk = walk->next) { + if (walk->pos < pos+size && walk->pos+walk->size > pos) { + if (walk->pos < pos) + memcpy(data,(char *) walk->data+pos-walk->pos,min(size, + walk->size-pos+walk->pos)); + else memcpy((char *) data+walk->pos-pos,walk->data,min(walk->size, + size+pos-walk->pos)); + } + } +} + + +int fs_test(loff_t pos,int size) +{ + void *scratch; + int okay; + + if (llseek(fd,pos,0) != pos) pdie("Seek to %lld",pos); + scratch = alloc(size); + okay = read(fd,scratch,size) == size; + free(scratch); + return okay; +} + + +void fs_write(loff_t pos,int size,void *data) +{ + CHANGE *new; + int did; + + if (write_immed) { + did_change = 1; + if (llseek(fd,pos,0) != pos) pdie("Seek to %lld",pos); + if ((did = write(fd,data,size)) == size) return; + if (did < 0) pdie("Write %d bytes at %lld",size,pos); + die("Wrote %d bytes instead of %d at %lld",did,size,pos); + } + new = alloc(sizeof(CHANGE)); + new->pos = pos; + memcpy(new->data = alloc(new->size = size),data,size); + new->next = NULL; + if (last) last->next = new; + else changes = new; + last = new; +} + + +static void fs_flush(void) +{ + CHANGE *this; + int size; + + while (changes) { + this = changes; + changes = changes->next; + if (llseek(fd,this->pos,0) != this->pos) + fprintf(stderr,"Seek to %lld failed: %s\n Did not write %d bytes.\n", + (long long)this->pos,strerror(errno),this->size); + else if ((size = write(fd,this->data,this->size)) < 0) + fprintf(stderr,"Writing %d bytes at %lld failed: %s\n",this->size, + (long long)this->pos,strerror(errno)); + else if (size != this->size) + fprintf(stderr,"Wrote %d bytes instead of %d bytes at %lld." + "\n",size,this->size,(long long)this->pos); + free(this->data); + free(this); + } +} + + +int fs_close(int write) +{ + CHANGE *next; + int changed; + + changed = !!changes; + if (write) fs_flush(); + else while (changes) { + next = changes->next; + free(changes->data); + free(changes); + changes = next; + } + if (close(fd) < 0) pdie("closing file system"); + return changed || did_change; +} + + +int fs_changed(void) +{ + return !!changes || did_change; +} diff --git a/src/io.h b/src/io.h new file mode 100644 index 0000000..9da453e --- /dev/null +++ b/src/io.h @@ -0,0 +1,71 @@ +/* io.h - Virtual disk input/output + + Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +/* FAT32, VFAT, Atari format support, and various fixes additions May 1998 + * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */ + + +#ifndef _IO_H +#define _IO_H + +#include <sys/types.h> /* for loff_t */ + +loff_t llseek(int fd, loff_t offset, int whence); + +/* lseek() analogue for large offsets. */ + +void fs_open(char *path,int rw); + +/* Opens the file system PATH. If RW is zero, the file system is opened + read-only, otherwise, it is opened read-write. */ + +void fs_read(loff_t pos,int size,void *data); + +/* Reads SIZE bytes starting at POS into DATA. Performs all applicable + changes. */ + +int fs_test(loff_t pos,int size); + +/* Returns a non-zero integer if SIZE bytes starting at POS can be read without + errors. Otherwise, it returns zero. */ + +void fs_write(loff_t pos,int size,void *data); + +/* If write_immed is non-zero, SIZE bytes are written from DATA to the disk, + starting at POS. If write_immed is zero, the change is added to a list in + memory. */ + +int fs_close(int write); + +/* Closes the file system, performs all pending changes if WRITE is non-zero + and removes the list of changes. Returns a non-zero integer if the file + system has been changed since the last fs_open, zero otherwise. */ + +int fs_changed(void); + +/* Determines whether the file system has changed. See fs_close. */ + +extern unsigned device_no; + +/* Major number of device (0 if file) and size (in 512 byte sectors) */ + +#endif diff --git a/src/lfn.c b/src/lfn.c new file mode 100644 index 0000000..dc17f20 --- /dev/null +++ b/src/lfn.c @@ -0,0 +1,505 @@ +/* lfn.c - Functions for handling VFAT long filenames + + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <limits.h> +#include <time.h> + +#include "common.h" +#include "io.h" +#include "dosfsck.h" +#include "lfn.h" +#include "file.h" + +typedef struct { + __u8 id; /* sequence number for slot */ + __u8 name0_4[10]; /* first 5 characters in name */ + __u8 attr; /* attribute byte */ + __u8 reserved; /* always 0 */ + __u8 alias_checksum; /* checksum for 8.3 alias */ + __u8 name5_10[12]; /* 6 more characters in name */ + __u16 start; /* starting cluster number, 0 in long slots */ + __u8 name11_12[4]; /* last 2 characters in name */ +} LFN_ENT; + +#define LFN_ID_START 0x40 +#define LFN_ID_SLOTMASK 0x1f + +#define CHARS_PER_LFN 13 + +/* These modul-global vars represent the state of the LFN parser */ +unsigned char *lfn_unicode = NULL; +unsigned char lfn_checksum; +int lfn_slot = -1; +loff_t *lfn_offsets = NULL; +int lfn_parts = 0; + +static unsigned char fat_uni2esc[64] = { + '0', '1', '2', '3', '4', '5', '6', '7', + '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', + 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', + 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', + 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', + 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', + 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', + 'u', 'v', 'w', 'x', 'y', 'z', '+', '-' +}; + +/* This defines which unicode chars are directly convertable to ISO-8859-1 */ +#define UNICODE_CONVERTABLE(cl,ch) (ch == 0 && (cl < 0x80 || cl >= 0xa0)) + +/* for maxlen param */ +#define UNTIL_0 INT_MAX + +/* Convert name part in 'lfn' from unicode to ASCII */ +#define CNV_THIS_PART(lfn) \ + ({ \ + char __part_uni[CHARS_PER_LFN*2]; \ + copy_lfn_part( __part_uni, lfn ); \ + cnv_unicode( __part_uni, CHARS_PER_LFN, 0 ); \ + }) + +/* Convert name parts collected so far (from previous slots) from unicode to + * ASCII */ +#define CNV_PARTS_SO_FAR() \ + (cnv_unicode( lfn_unicode+(lfn_slot*CHARS_PER_LFN*2), \ + lfn_parts*CHARS_PER_LFN, 0 )) + +/* This function converts an unicode string to a normal ASCII string, assuming + * ISO-8859-1 charset. Characters not in 8859-1 are converted to the same + * escape notation as used by the kernel, i.e. the uuencode-like ":xxx" */ +static char *cnv_unicode( const unsigned char *uni, int maxlen, int use_q ) +{ + const unsigned char *up; + unsigned char *out, *cp; + int len, val; + + for( len = 0, up = uni; (up-uni)/2 < maxlen && (up[0] || up[1]); up += 2 ){ + if (UNICODE_CONVERTABLE(up[0],up[1])) + ++len; + else + len += 4; + } + cp = out = use_q ? qalloc( &mem_queue, len+1 ) : alloc( len+1 ); + + for( up = uni; (up-uni)/2 < maxlen && (up[0] || up[1]); up += 2 ) { + if (UNICODE_CONVERTABLE(up[0],up[1])) + *cp++ = up[0]; + else { + /* here the same escape notation is used as in the Linux kernel */ + *cp++ = ':'; + val = (up[1] << 8) + up[0]; + cp[2] = fat_uni2esc[val & 0x3f]; + val >>= 6; + cp[1] = fat_uni2esc[val & 0x3f]; + val >>= 6; + cp[0] = fat_uni2esc[val & 0x3f]; + cp += 3; + } + } + *cp = 0; + + return( out ); +} + + +static void copy_lfn_part( char *dst, LFN_ENT *lfn ) +{ + memcpy( dst, lfn->name0_4, 10 ); + memcpy( dst+10, lfn->name5_10, 12 ); + memcpy( dst+22, lfn->name11_12, 4 ); +} + + +static void clear_lfn_slots( int start, int end ) +{ + int i; + LFN_ENT empty; + + /* New dir entry is zeroed except first byte, which is set to 0xe5. + * This is to avoid that some FAT-reading OSes (not Linux! ;) stop reading + * a directory at the first zero entry... + */ + memset( &empty, 0, sizeof(empty) ); + empty.id = DELETED_FLAG; + + for( i = start; i <= end; ++i ) { + fs_write( lfn_offsets[i], sizeof(LFN_ENT), &empty ); + } +} + +void lfn_fix_checksum(loff_t from, loff_t to, const char *short_name) +{ + int i; + __u8 sum; + for (sum = 0, i = 0; i < 11; i++) + sum = (((sum&1) << 7) | ((sum&0xfe) >> 1)) + short_name[i]; + + for( ; from < to; from += sizeof(LFN_ENT) ) { + fs_write( from + offsetof(LFN_ENT,alias_checksum), sizeof(sum), &sum ); + } +} + +void lfn_reset( void ) +{ + if (lfn_unicode) + free( lfn_unicode ); + lfn_unicode = NULL; + if (lfn_offsets) + free( lfn_offsets ); + lfn_offsets = NULL; + lfn_slot = -1; +} + + +/* This function is only called with de->attr == VFAT_LN_ATTR. It stores part + * of the long name. */ +void lfn_add_slot( DIR_ENT *de, loff_t dir_offset ) +{ + LFN_ENT *lfn = (LFN_ENT *)de; + int slot = lfn->id & LFN_ID_SLOTMASK; + unsigned offset; + + if (lfn_slot == 0) lfn_check_orphaned(); + + if (de->attr != VFAT_LN_ATTR) + die("lfn_add_slot called with non-LFN directory entry"); + + if (lfn->id & LFN_ID_START && slot != 0) { + if (lfn_slot != -1) { + int can_clear = 0; + /* There is already a LFN "in progess", so it is an error that a + * new start entry is here. */ + /* Causes: 1) if slot# == expected: start bit set mysteriously, 2) + * old LFN overwritten by new one */ + /* Fixes: 1) delete previous LFN 2) if slot# == expected and + * checksum ok: clear start bit */ + /* XXX: Should delay that until next LFN known (then can better + * display the name) */ + printf( "A new long file name starts within an old one.\n" ); + if (slot == lfn_slot && + lfn->alias_checksum == lfn_checksum) { + char *part1 = CNV_THIS_PART(lfn); + char *part2 = CNV_PARTS_SO_FAR(); + printf( " It could be that the LFN start bit is wrong here\n" + " if \"%s\" seems to match \"%s\".\n", part1, part2 ); + free( part1 ); + free( part2 ); + can_clear = 1; + } + if (interactive) { + printf( "1: Delete previous LFN\n2: Leave it as it is.\n" ); + if (can_clear) + printf( "3: Clear start bit and concatenate LFNs\n" ); + } + else printf( " Not auto-correcting this.\n" ); + if (interactive) { + switch( get_key( can_clear ? "123" : "12", "?" )) { + case '1': + clear_lfn_slots( 0, lfn_parts-1 ); + lfn_reset(); + break; + case '2': + break; + case '3': + lfn->id &= ~LFN_ID_START; + fs_write( dir_offset+offsetof(LFN_ENT,id), + sizeof(lfn->id), &lfn->id ); + break; + } + } + } + lfn_slot = slot; + lfn_checksum = lfn->alias_checksum; + lfn_unicode = alloc( (lfn_slot*CHARS_PER_LFN+1)*2 ); + lfn_offsets = alloc( lfn_slot*sizeof(loff_t) ); + lfn_parts = 0; + } + else if (lfn_slot == -1 && slot != 0) { + /* No LFN in progress, but slot found; start bit missing */ + /* Causes: 1) start bit got lost, 2) Previous slot with start bit got + * lost */ + /* Fixes: 1) delete LFN, 2) set start bit */ + char *part = CNV_THIS_PART(lfn); + printf( "Long filename fragment \"%s\" found outside a LFN " + "sequence.\n (Maybe the start bit is missing on the " + "last fragment)\n", part ); + if (interactive) { + printf( "1: Delete fragment\n2: Leave it as it is.\n" + "3: Set start bit\n" ); + } + else printf( " Not auto-correcting this.\n" ); + switch( interactive ? get_key( "123", "?" ) : '2') { + case '1': + if (!lfn_offsets) + lfn_offsets = alloc( sizeof(loff_t) ); + lfn_offsets[0] = dir_offset; + clear_lfn_slots( 0, 0 ); + lfn_reset(); + return; + case '2': + lfn_reset(); + return; + case '3': + lfn->id |= LFN_ID_START; + fs_write( dir_offset+offsetof(LFN_ENT,id), + sizeof(lfn->id), &lfn->id ); + lfn_slot = slot; + lfn_checksum = lfn->alias_checksum; + lfn_unicode = alloc( (lfn_slot*CHARS_PER_LFN+1)*2 ); + lfn_offsets = alloc( lfn_slot*sizeof(loff_t) ); + lfn_parts = 0; + break; + } + } + else if (slot != lfn_slot) { + /* wrong sequence number */ + /* Causes: 1) seq-no destroyed */ + /* Fixes: 1) delete LFN, 2) fix number (maybe only if following parts + * are ok?, maybe only if checksum is ok?) (Attention: space + * for name was allocated before!) */ + int can_fix = 0; + printf( "Unexpected long filename sequence number " + "(%d vs. expected %d).\n", + slot, lfn_slot ); + if (lfn->alias_checksum == lfn_checksum && lfn_slot > 0) { + char *part1 = CNV_THIS_PART(lfn); + char *part2 = CNV_PARTS_SO_FAR(); + printf( " It could be that just the number is wrong\n" + " if \"%s\" seems to match \"%s\".\n", part1, part2 ); + free( part1 ); + free( part2 ); + can_fix = 1; + } + if (interactive) { + printf( "1: Delete LFN\n2: Leave it as it is (and ignore LFN so far)\n" ); + if (can_fix) + printf( "3: Correct sequence number\n" ); + } + else printf( " Not auto-correcting this.\n" ); + switch( interactive ? get_key( can_fix ? "123" : "12", "?" ) : '2') { + case '1': + if (!lfn_offsets) { + lfn_offsets = alloc( sizeof(loff_t) ); + lfn_parts = 0; + } + lfn_offsets[lfn_parts++] = dir_offset; + clear_lfn_slots( 0, lfn_parts-1 ); + lfn_reset(); + return; + case '2': + lfn_reset(); + return; + case '3': + lfn->id = (lfn->id & ~LFN_ID_SLOTMASK) | lfn_slot; + fs_write( dir_offset+offsetof(LFN_ENT,id), + sizeof(lfn->id), &lfn->id ); + break; + } + } + + if (lfn->alias_checksum != lfn_checksum) { + /* checksum mismatch */ + /* Causes: 1) checksum field here destroyed */ + /* Fixes: 1) delete LFN, 2) fix checksum */ + printf( "Checksum in long filename part wrong " + "(%02x vs. expected %02x).\n", + lfn->alias_checksum, lfn_checksum ); + if (interactive) { + printf( "1: Delete LFN\n2: Leave it as it is.\n" + "3: Correct checksum\n" ); + } + else printf( " Not auto-correcting this.\n" ); + if (interactive) { + switch( get_key( "123", "?" )) { + case '1': + lfn_offsets[lfn_parts++] = dir_offset; + clear_lfn_slots( 0, lfn_parts-1 ); + lfn_reset(); + return; + case '2': + break; + case '3': + lfn->alias_checksum = lfn_checksum; + fs_write( dir_offset+offsetof(LFN_ENT,alias_checksum), + sizeof(lfn->alias_checksum), &lfn->alias_checksum ); + break; + } + } + } + + if (lfn_slot != -1) { + lfn_slot--; + offset = lfn_slot * CHARS_PER_LFN*2; + copy_lfn_part( lfn_unicode+offset, lfn ); + if (lfn->id & LFN_ID_START) + lfn_unicode[offset+26] = lfn_unicode[offset+27] = 0; + lfn_offsets[lfn_parts++] = dir_offset; + } + + if (lfn->reserved != 0) { + printf( "Reserved field in VFAT long filename slot is not 0 " + "(but 0x%02x).\n", lfn->reserved ); + if (interactive) + printf( "1: Fix.\n2: Leave it.\n" ); + else printf( "Auto-setting to 0.\n" ); + if (!interactive || get_key("12","?") == '1') { + lfn->reserved = 0; + fs_write( dir_offset+offsetof(LFN_ENT,reserved), + sizeof(lfn->reserved), &lfn->reserved ); + } + } + if (lfn->start != CT_LE_W(0)) { + printf( "Start cluster field in VFAT long filename slot is not 0 " + "(but 0x%04x).\n", lfn->start ); + if (interactive) + printf( "1: Fix.\n2: Leave it.\n" ); + else printf( "Auto-setting to 0.\n" ); + if (!interactive || get_key("12","?") == '1') { + lfn->start = CT_LE_W(0); + fs_write( dir_offset+offsetof(LFN_ENT,start), + sizeof(lfn->start),&lfn->start ); + } + } +} + + +/* This function is always called when de->attr != VFAT_LN_ATTR is found, to + * retrieve the previously constructed LFN. */ +char *lfn_get( DIR_ENT *de, loff_t *lfn_offset ) +{ + char *lfn; + __u8 sum; + int i; + + *lfn_offset = 0; + if (de->attr == VFAT_LN_ATTR) + die("lfn_get called with LFN directory entry"); + +#if 0 + if (de->lcase) + printf( "lcase=%02x\n",de->lcase ); +#endif + + if (lfn_slot == -1) + /* no long name for this file */ + return NULL; + + if (lfn_slot != 0) { + /* The long name isn't finished yet. */ + /* Causes: 1) LFN slot overwritten by non-VFAT aware tool */ + /* Fixes: 1) delete LFN 2) move overwriting entry to somewhere else + * and let user enter missing part of LFN (hard to do :-() + * 3) renumber entries and truncate name */ + char *long_name = CNV_PARTS_SO_FAR(); + char *short_name = file_name(de->name); + printf( "Unfinished long file name \"%s\".\n" + " (Start may have been overwritten by %s)\n", + long_name, short_name ); + free( long_name ); + if (interactive) { + printf( "1: Delete LFN\n2: Leave it as it is.\n" + "3: Fix numbering (truncates long name and attaches " + "it to short name %s)\n", short_name ); + } + else printf( " Not auto-correcting this.\n" ); + switch( interactive ? get_key( "123", "?" ) : '2') { + case '1': + clear_lfn_slots( 0, lfn_parts-1 ); + lfn_reset(); + return NULL; + case '2': + lfn_reset(); + return NULL; + case '3': + for( i = 0; i < lfn_parts; ++i ) { + __u8 id = (lfn_parts-i) | (i==0 ? LFN_ID_START : 0); + fs_write( lfn_offsets[i]+offsetof(LFN_ENT,id), + sizeof(id), &id ); + } + memmove( lfn_unicode, lfn_unicode+lfn_slot*CHARS_PER_LFN*2, + lfn_parts*CHARS_PER_LFN*2 ); + break; + } + } + + for (sum = 0, i = 0; i < 11; i++) + sum = (((sum&1) << 7) | ((sum&0xfe) >> 1)) + de->name[i]; + if (sum != lfn_checksum) { + /* checksum doesn't match, long name doesn't apply to this alias */ + /* Causes: 1) alias renamed */ + /* Fixes: 1) Fix checksum in LFN entries */ + char *long_name = CNV_PARTS_SO_FAR(); + char *short_name = file_name(de->name); + printf( "Wrong checksum for long file name \"%s\".\n" + " (Short name %s may have changed without updating the long name)\n", + long_name, short_name ); + free( long_name ); + if (interactive) { + printf( "1: Delete LFN\n2: Leave it as it is.\n" + "3: Fix checksum (attaches to short name %s)\n", + short_name ); + } + else printf( " Not auto-correcting this.\n" ); + if (interactive) { + switch( get_key( "123", "?" )) { + case '1': + clear_lfn_slots( 0, lfn_parts-1 ); + lfn_reset(); + return NULL; + case '2': + lfn_reset(); + return NULL; + case '3': + for( i = 0; i < lfn_parts; ++i ) { + fs_write( lfn_offsets[i]+offsetof(LFN_ENT,alias_checksum), + sizeof(sum), &sum ); + } + break; + } + } + } + + *lfn_offset = lfn_offsets[0]; + lfn = cnv_unicode( lfn_unicode, UNTIL_0, 1 ); + lfn_reset(); + return( lfn ); +} + +void lfn_check_orphaned(void) +{ + char *long_name; + + if (lfn_slot == -1) + return; + + long_name = CNV_PARTS_SO_FAR(); + printf("Orphaned long file name part \"%s\"\n", long_name); + if (interactive) + printf( "1: Delete.\n2: Leave it.\n" ); + else printf( " Auto-deleting.\n" ); + if (!interactive || get_key("12","?") == '1') { + clear_lfn_slots(0, lfn_parts - 1); + } + lfn_reset(); +} diff --git a/src/lfn.h b/src/lfn.h new file mode 100644 index 0000000..2da426d --- /dev/null +++ b/src/lfn.h @@ -0,0 +1,38 @@ +/* lfn.h - Functions for handling VFAT long filenames + + Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +#ifndef _LFN_H +#define _LFN_H + +void lfn_reset( void ); +/* Reset the state of the LFN parser. */ + +void lfn_add_slot( DIR_ENT *de, loff_t dir_offset ); +/* Process a dir slot that is a VFAT LFN entry. */ + +char *lfn_get( DIR_ENT *de, loff_t *lfn_offset ); +/* Retrieve the long name for the proper dir entry. */ + +void lfn_check_orphaned(void); + +void lfn_fix_checksum(loff_t from, loff_t to, const char *short_name); + +#endif diff --git a/src/mkdosfs.c b/src/mkdosfs.c new file mode 100644 index 0000000..bfa80a3 --- /dev/null +++ b/src/mkdosfs.c @@ -0,0 +1,1809 @@ +/* mkdosfs.c - utility to create FAT/MS-DOS filesystems + + Copyright (C) 1991 Linus Torvalds <torvalds@klaava.helsinki.fi> + Copyright (C) 1992-1993 Remy Card <card@masi.ibp.fr> + Copyright (C) 1993-1994 David Hudson <dave@humbug.demon.co.uk> + Copyright (C) 1998 H. Peter Anvin <hpa@zytor.com> + Copyright (C) 1998-2005 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +/* Description: Utility to allow an MS-DOS filesystem to be created + under Linux. A lot of the basic structure of this program has been + borrowed from Remy Card's "mke2fs" code. + + As far as possible the aim here is to make the "mkdosfs" command + look almost identical to the other Linux filesystem make utilties, + eg bad blocks are still specified as blocks, not sectors, but when + it comes down to it, DOS is tied to the idea of a sector (512 bytes + as a rule), and not the block. For example the boot block does not + occupy a full cluster. + + Fixes/additions May 1998 by Roman Hodek + <Roman.Hodek@informatik.uni-erlangen.de>: + - Atari format support + - New options -A, -S, -C + - Support for filesystems > 2GB + - FAT32 support */ + +/* Include the header files */ + +#include "version.h" + +#include <fcntl.h> +#include <linux/hdreg.h> +#include <sys/mount.h> +#include <linux/fd.h> +#include <endian.h> +#include <mntent.h> +#include <signal.h> +#include <string.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/ioctl.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/types.h> +#include <unistd.h> +#include <time.h> +#include <errno.h> + +# include <asm/types.h> + +#if __BYTE_ORDER == __BIG_ENDIAN + +#include <asm/byteorder.h> +#ifdef __le16_to_cpu +/* ++roman: 2.1 kernel headers define these function, they're probably more + * efficient then coding the swaps machine-independently. */ +#define CF_LE_W __le16_to_cpu +#define CF_LE_L __le32_to_cpu +#define CT_LE_W __cpu_to_le16 +#define CT_LE_L __cpu_to_le32 +#else +#define CF_LE_W(v) ((((v) & 0xff) << 8) | (((v) >> 8) & 0xff)) +#define CF_LE_L(v) (((unsigned)(v)>>24) | (((unsigned)(v)>>8)&0xff00) | \ + (((unsigned)(v)<<8)&0xff0000) | ((unsigned)(v)<<24)) +#define CT_LE_W(v) CF_LE_W(v) +#define CT_LE_L(v) CF_LE_L(v) +#endif /* defined(__le16_to_cpu) */ + +#else + +#define CF_LE_W(v) (v) +#define CF_LE_L(v) (v) +#define CT_LE_W(v) (v) +#define CT_LE_L(v) (v) + +#endif /* __BIG_ENDIAN */ + +/* In earlier versions, an own llseek() was used, but glibc lseek() is + * sufficient (or even better :) for 64 bit offsets in the meantime */ +#define llseek lseek + +/* Constant definitions */ + +#define TRUE 1 /* Boolean constants */ +#define FALSE 0 + +#define TEST_BUFFER_BLOCKS 16 +#define HARD_SECTOR_SIZE 512 +#define SECTORS_PER_BLOCK ( BLOCK_SIZE / HARD_SECTOR_SIZE ) + + +/* Macro definitions */ + +/* Report a failure message and return a failure error code */ + +#define die( str ) fatal_error( "%s: " str "\n" ) + + +/* Mark a cluster in the FAT as bad */ + +#define mark_sector_bad( sector ) mark_FAT_sector( sector, FAT_BAD ) + +/* Compute ceil(a/b) */ + +inline int +cdiv (int a, int b) +{ + return (a + b - 1) / b; +} + +/* MS-DOS filesystem structures -- I included them here instead of + including linux/msdos_fs.h since that doesn't include some fields we + need */ + +#define ATTR_RO 1 /* read-only */ +#define ATTR_HIDDEN 2 /* hidden */ +#define ATTR_SYS 4 /* system */ +#define ATTR_VOLUME 8 /* volume label */ +#define ATTR_DIR 16 /* directory */ +#define ATTR_ARCH 32 /* archived */ + +#define ATTR_NONE 0 /* no attribute bits */ +#define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN) + /* attribute bits that are copied "as is" */ + +/* FAT values */ +#define FAT_EOF (atari_format ? 0x0fffffff : 0x0ffffff8) +#define FAT_BAD 0x0ffffff7 + +#define MSDOS_EXT_SIGN 0x29 /* extended boot sector signature */ +#define MSDOS_FAT12_SIGN "FAT12 " /* FAT12 filesystem signature */ +#define MSDOS_FAT16_SIGN "FAT16 " /* FAT16 filesystem signature */ +#define MSDOS_FAT32_SIGN "FAT32 " /* FAT32 filesystem signature */ + +#define BOOT_SIGN 0xAA55 /* Boot sector magic number */ + +#define MAX_CLUST_12 ((1 << 12) - 16) +#define MAX_CLUST_16 ((1 << 16) - 16) +#define MIN_CLUST_32 65529 +/* M$ says the high 4 bits of a FAT32 FAT entry are reserved and don't belong + * to the cluster number. So the max. cluster# is based on 2^28 */ +#define MAX_CLUST_32 ((1 << 28) - 16) + +#define FAT12_THRESHOLD 4085 + +#define OLDGEMDOS_MAX_SECTORS 32765 +#define GEMDOS_MAX_SECTORS 65531 +#define GEMDOS_MAX_SECTOR_SIZE (16*1024) + +#define BOOTCODE_SIZE 448 +#define BOOTCODE_FAT32_SIZE 420 + +/* __attribute__ ((packed)) is used on all structures to make gcc ignore any + * alignments */ + +struct msdos_volume_info { + __u8 drive_number; /* BIOS drive number */ + __u8 RESERVED; /* Unused */ + __u8 ext_boot_sign; /* 0x29 if fields below exist (DOS 3.3+) */ + __u8 volume_id[4]; /* Volume ID number */ + __u8 volume_label[11];/* Volume label */ + __u8 fs_type[8]; /* Typically FAT12 or FAT16 */ +} __attribute__ ((packed)); + +struct msdos_boot_sector +{ + __u8 boot_jump[3]; /* Boot strap short or near jump */ + __u8 system_id[8]; /* Name - can be used to special case + partition manager volumes */ + __u8 sector_size[2]; /* bytes per logical sector */ + __u8 cluster_size; /* sectors/cluster */ + __u16 reserved; /* reserved sectors */ + __u8 fats; /* number of FATs */ + __u8 dir_entries[2]; /* root directory entries */ + __u8 sectors[2]; /* number of sectors */ + __u8 media; /* media code (unused) */ + __u16 fat_length; /* sectors/FAT */ + __u16 secs_track; /* sectors per track */ + __u16 heads; /* number of heads */ + __u32 hidden; /* hidden sectors (unused) */ + __u32 total_sect; /* number of sectors (if sectors == 0) */ + union { + struct { + struct msdos_volume_info vi; + __u8 boot_code[BOOTCODE_SIZE]; + } __attribute__ ((packed)) _oldfat; + struct { + __u32 fat32_length; /* sectors/FAT */ + __u16 flags; /* bit 8: fat mirroring, low 4: active fat */ + __u8 version[2]; /* major, minor filesystem version */ + __u32 root_cluster; /* first cluster in root directory */ + __u16 info_sector; /* filesystem info sector */ + __u16 backup_boot; /* backup boot sector */ + __u16 reserved2[6]; /* Unused */ + struct msdos_volume_info vi; + __u8 boot_code[BOOTCODE_FAT32_SIZE]; + } __attribute__ ((packed)) _fat32; + } __attribute__ ((packed)) fstype; + __u16 boot_sign; +} __attribute__ ((packed)); +#define fat32 fstype._fat32 +#define oldfat fstype._oldfat + +struct fat32_fsinfo { + __u32 reserved1; /* Nothing as far as I can tell */ + __u32 signature; /* 0x61417272L */ + __u32 free_clusters; /* Free cluster count. -1 if unknown */ + __u32 next_cluster; /* Most recently allocated cluster. + * Unused under Linux. */ + __u32 reserved2[4]; +}; + +struct msdos_dir_entry + { + char name[8], ext[3]; /* name and extension */ + __u8 attr; /* attribute bits */ + __u8 lcase; /* Case for base and extension */ + __u8 ctime_ms; /* Creation time, milliseconds */ + __u16 ctime; /* Creation time */ + __u16 cdate; /* Creation date */ + __u16 adate; /* Last access date */ + __u16 starthi; /* high 16 bits of first cl. (FAT32) */ + __u16 time, date, start; /* time, date and first cluster */ + __u32 size; /* file size (in bytes) */ + } __attribute__ ((packed)); + +/* The "boot code" we put into the filesystem... it writes a message and + tells the user to try again */ + +char dummy_boot_jump[3] = { 0xeb, 0x3c, 0x90 }; + +char dummy_boot_jump_m68k[2] = { 0x60, 0x1c }; + +#define MSG_OFFSET_OFFSET 3 +char dummy_boot_code[BOOTCODE_SIZE] = + "\x0e" /* push cs */ + "\x1f" /* pop ds */ + "\xbe\x5b\x7c" /* mov si, offset message_txt */ + /* write_msg: */ + "\xac" /* lodsb */ + "\x22\xc0" /* and al, al */ + "\x74\x0b" /* jz key_press */ + "\x56" /* push si */ + "\xb4\x0e" /* mov ah, 0eh */ + "\xbb\x07\x00" /* mov bx, 0007h */ + "\xcd\x10" /* int 10h */ + "\x5e" /* pop si */ + "\xeb\xf0" /* jmp write_msg */ + /* key_press: */ + "\x32\xe4" /* xor ah, ah */ + "\xcd\x16" /* int 16h */ + "\xcd\x19" /* int 19h */ + "\xeb\xfe" /* foo: jmp foo */ + /* message_txt: */ + + "This is not a bootable disk. Please insert a bootable floppy and\r\n" + "press any key to try again ... \r\n"; + +#define MESSAGE_OFFSET 29 /* Offset of message in above code */ + +/* Global variables - the root of all evil :-) - see these and weep! */ + +static char *program_name = "mkdosfs"; /* Name of the program */ +static char *device_name = NULL; /* Name of the device on which to create the filesystem */ +static int atari_format = 0; /* Use Atari variation of MS-DOS FS format */ +static int check = FALSE; /* Default to no readablity checking */ +static int verbose = 0; /* Default to verbose mode off */ +static long volume_id; /* Volume ID number */ +static time_t create_time; /* Creation time */ +static struct timeval create_timeval; /* Creation time */ +static char volume_name[] = " "; /* Volume name */ +static unsigned long long blocks; /* Number of blocks in filesystem */ +static int sector_size = 512; /* Size of a logical sector */ +static int sector_size_set = 0; /* User selected sector size */ +static int backup_boot = 0; /* Sector# of backup boot sector */ +static int reserved_sectors = 0;/* Number of reserved sectors */ +static int badblocks = 0; /* Number of bad blocks in the filesystem */ +static int nr_fats = 2; /* Default number of FATs to produce */ +static int size_fat = 0; /* Size in bits of FAT entries */ +static int size_fat_by_user = 0; /* 1 if FAT size user selected */ +static int dev = -1; /* FS block device file handle */ +static int ignore_full_disk = 0; /* Ignore warning about 'full' disk devices */ +static off_t currently_testing = 0; /* Block currently being tested (if autodetect bad blocks) */ +static struct msdos_boot_sector bs; /* Boot sector data */ +static int start_data_sector; /* Sector number for the start of the data area */ +static int start_data_block; /* Block number for the start of the data area */ +static unsigned char *fat; /* File allocation table */ +static unsigned alloced_fat_length; /* # of FAT sectors we can keep in memory */ +static unsigned char *info_sector; /* FAT32 info sector */ +static struct msdos_dir_entry *root_dir; /* Root directory */ +static int size_root_dir; /* Size of the root directory in bytes */ +static int sectors_per_cluster = 0; /* Number of sectors per disk cluster */ +static int root_dir_entries = 0; /* Number of root directory entries */ +static char *blank_sector; /* Blank sector - all zeros */ +static int hidden_sectors = 0; /* Number of hidden sectors */ +static int malloc_entire_fat = FALSE; /* Whether we should malloc() the entire FAT or not */ +static int align_structures = TRUE; /* Whether to enforce alignment */ + +/* Function prototype definitions */ + +static void fatal_error (const char *fmt_string) __attribute__((noreturn)); +static void mark_FAT_cluster (int cluster, unsigned int value); +static void mark_FAT_sector (int sector, unsigned int value); +static long do_check (char *buffer, int try, off_t current_block); +static void alarm_intr (int alnum); +static void check_blocks (void); +static void get_list_blocks (char *filename); +static int valid_offset (int fd, loff_t offset); +static unsigned long long count_blocks (char *filename); +static void check_mount (char *device_name); +static void establish_params (int device_num, int size); +static void setup_tables (void); +static void write_tables (void); + + +/* The function implementations */ + +/* Handle the reporting of fatal errors. Volatile to let gcc know that this doesn't return */ + +static void +fatal_error (const char *fmt_string) +{ + fprintf (stderr, fmt_string, program_name, device_name); + exit (1); /* The error exit code is 1! */ +} + + +/* Mark the specified cluster as having a particular value */ + +static void +mark_FAT_cluster (int cluster, unsigned int value) +{ + switch( size_fat ) { + case 12: + value &= 0x0fff; + if (((cluster * 3) & 0x1) == 0) + { + fat[3 * cluster / 2] = (unsigned char) (value & 0x00ff); + fat[(3 * cluster / 2) + 1] = (unsigned char) ((fat[(3 * cluster / 2) + 1] & 0x00f0) + | ((value & 0x0f00) >> 8)); + } + else + { + fat[3 * cluster / 2] = (unsigned char) ((fat[3 * cluster / 2] & 0x000f) | ((value & 0x000f) << 4)); + fat[(3 * cluster / 2) + 1] = (unsigned char) ((value & 0x0ff0) >> 4); + } + break; + + case 16: + value &= 0xffff; + fat[2 * cluster] = (unsigned char) (value & 0x00ff); + fat[(2 * cluster) + 1] = (unsigned char) (value >> 8); + break; + + case 32: + value &= 0xfffffff; + fat[4 * cluster] = (unsigned char) (value & 0x000000ff); + fat[(4 * cluster) + 1] = (unsigned char) ((value & 0x0000ff00) >> 8); + fat[(4 * cluster) + 2] = (unsigned char) ((value & 0x00ff0000) >> 16); + fat[(4 * cluster) + 3] = (unsigned char) ((value & 0xff000000) >> 24); + break; + + default: + die("Bad FAT size (not 12, 16, or 32)"); + } +} + + +/* Mark a specified sector as having a particular value in it's FAT entry */ + +static void +mark_FAT_sector (int sector, unsigned int value) +{ + int cluster; + + cluster = (sector - start_data_sector) / (int) (bs.cluster_size) / + (sector_size/HARD_SECTOR_SIZE); + if (cluster < 0) + die ("Invalid cluster number in mark_FAT_sector: probably bug!"); + + mark_FAT_cluster (cluster, value); +} + + +/* Perform a test on a block. Return the number of blocks that could be read successfully */ + +static long +do_check (char *buffer, int try, off_t current_block) +{ + long got; + + if (llseek (dev, current_block * BLOCK_SIZE, SEEK_SET) /* Seek to the correct location */ + != current_block * BLOCK_SIZE) + die ("seek failed during testing for blocks"); + + got = read (dev, buffer, try * BLOCK_SIZE); /* Try reading! */ + if (got < 0) + got = 0; + + if (got & (BLOCK_SIZE - 1)) + printf ("Unexpected values in do_check: probably bugs\n"); + got /= BLOCK_SIZE; + + return got; +} + + +/* Alarm clock handler - display the status of the quest for bad blocks! Then retrigger the alarm for five senconds + later (so we can come here again) */ + +static void +alarm_intr (int alnum) +{ + if (currently_testing >= blocks) + return; + + signal (SIGALRM, alarm_intr); + alarm (5); + if (!currently_testing) + return; + + printf ("%lld... ", (unsigned long long)currently_testing); + fflush (stdout); +} + + +static void +check_blocks (void) +{ + int try, got; + int i; + static char blkbuf[BLOCK_SIZE * TEST_BUFFER_BLOCKS]; + + if (verbose) + { + printf ("Searching for bad blocks "); + fflush (stdout); + } + currently_testing = 0; + if (verbose) + { + signal (SIGALRM, alarm_intr); + alarm (5); + } + try = TEST_BUFFER_BLOCKS; + while (currently_testing < blocks) + { + if (currently_testing + try > blocks) + try = blocks - currently_testing; + got = do_check (blkbuf, try, currently_testing); + currently_testing += got; + if (got == try) + { + try = TEST_BUFFER_BLOCKS; + continue; + } + else + try = 1; + if (currently_testing < start_data_block) + die ("bad blocks before data-area: cannot make fs"); + + for (i = 0; i < SECTORS_PER_BLOCK; i++) /* Mark all of the sectors in the block as bad */ + mark_sector_bad (currently_testing * SECTORS_PER_BLOCK + i); + badblocks++; + currently_testing++; + } + + if (verbose) + printf ("\n"); + + if (badblocks) + printf ("%d bad block%s\n", badblocks, + (badblocks > 1) ? "s" : ""); +} + + +static void +get_list_blocks (char *filename) +{ + int i; + FILE *listfile; + unsigned long blockno; + + listfile = fopen (filename, "r"); + if (listfile == (FILE *) NULL) + die ("Can't open file of bad blocks"); + + while (!feof (listfile)) + { + fscanf (listfile, "%ld\n", &blockno); + for (i = 0; i < SECTORS_PER_BLOCK; i++) /* Mark all of the sectors in the block as bad */ + mark_sector_bad (blockno * SECTORS_PER_BLOCK + i); + badblocks++; + } + fclose (listfile); + + if (badblocks) + printf ("%d bad block%s\n", badblocks, + (badblocks > 1) ? "s" : ""); +} + + +/* Given a file descriptor and an offset, check whether the offset is a valid offset for the file - return FALSE if it + isn't valid or TRUE if it is */ + +static int +valid_offset (int fd, loff_t offset) +{ + char ch; + + if (llseek (fd, offset, SEEK_SET) < 0) + return FALSE; + if (read (fd, &ch, 1) < 1) + return FALSE; + return TRUE; +} + + +/* Given a filename, look to see how many blocks of BLOCK_SIZE are present, returning the answer */ + +static unsigned long long +count_blocks (char *filename) +{ + loff_t high, low; + int fd; + + if ((fd = open (filename, O_RDONLY)) < 0) + { + perror (filename); + exit (1); + } + + /* first try SEEK_END, which should work on most devices nowadays */ + if ((low = llseek(fd, 0, SEEK_END)) <= 0) { + low = 0; + for (high = 1; valid_offset (fd, high); high *= 2) + low = high; + while (low < high - 1) { + const loff_t mid = (low + high) / 2; + if (valid_offset (fd, mid)) + low = mid; + else + high = mid; + } + ++low; + } + + close (fd); + return low / BLOCK_SIZE; +} + + +/* Check to see if the specified device is currently mounted - abort if it is */ + +static void +check_mount (char *device_name) +{ + FILE *f; + struct mntent *mnt; + + if ((f = setmntent (MOUNTED, "r")) == NULL) + return; + while ((mnt = getmntent (f)) != NULL) + if (strcmp (device_name, mnt->mnt_fsname) == 0) + die ("%s contains a mounted file system."); + endmntent (f); +} + + +/* Establish the geometry and media parameters for the device */ + +static void +establish_params (int device_num,int size) +{ + long loop_size; + struct hd_geometry geometry; + struct floppy_struct param; + int def_root_dir_entries = 512; + + if ((0 == device_num) || ((device_num & 0xff00) == 0x0200)) + /* file image or floppy disk */ + { + if (0 == device_num) + { + param.size = size/512; + switch(param.size) + { + case 720: + param.sect = 9 ; + param.head = 2; + break; + case 1440: + param.sect = 9; + param.head = 2; + break; + case 2400: + param.sect = 15; + param.head = 2; + break; + case 2880: + param.sect = 18; + param.head = 2; + break; + case 5760: + param.sect = 36; + param.head = 2; + break; + default: + /* fake values */ + param.sect = 32; + param.head = 64; + break; + } + + } + else /* is a floppy diskette */ + { + if (ioctl (dev, FDGETPRM, ¶m)) /* Can we get the diskette geometry? */ + die ("unable to get diskette geometry for '%s'"); + } + bs.secs_track = CT_LE_W(param.sect); /* Set up the geometry information */ + bs.heads = CT_LE_W(param.head); + switch (param.size) /* Set up the media descriptor byte */ + { + case 720: /* 5.25", 2, 9, 40 - 360K */ + bs.media = (char) 0xfd; + bs.cluster_size = (char) 2; + def_root_dir_entries = 112; + break; + + case 1440: /* 3.5", 2, 9, 80 - 720K */ + bs.media = (char) 0xf9; + bs.cluster_size = (char) 2; + def_root_dir_entries = 112; + break; + + case 2400: /* 5.25", 2, 15, 80 - 1200K */ + bs.media = (char) 0xf9; + bs.cluster_size = (char)(atari_format ? 2 : 1); + def_root_dir_entries = 224; + break; + + case 5760: /* 3.5", 2, 36, 80 - 2880K */ + bs.media = (char) 0xf0; + bs.cluster_size = (char) 2; + def_root_dir_entries = 224; + break; + + case 2880: /* 3.5", 2, 18, 80 - 1440K */ + floppy_default: + bs.media = (char) 0xf0; + bs.cluster_size = (char)(atari_format ? 2 : 1); + def_root_dir_entries = 224; + break; + + default: /* Anything else */ + if (0 == device_num) + goto def_hd_params; + else + goto floppy_default; + } + } + else if ((device_num & 0xff00) == 0x0700) /* This is a loop device */ + { + if (ioctl (dev, BLKGETSIZE, &loop_size)) + die ("unable to get loop device size"); + + switch (loop_size) /* Assuming the loop device -> floppy later */ + { + case 720: /* 5.25", 2, 9, 40 - 360K */ + bs.secs_track = CF_LE_W(9); + bs.heads = CF_LE_W(2); + bs.media = (char) 0xfd; + bs.cluster_size = (char) 2; + def_root_dir_entries = 112; + break; + + case 1440: /* 3.5", 2, 9, 80 - 720K */ + bs.secs_track = CF_LE_W(9); + bs.heads = CF_LE_W(2); + bs.media = (char) 0xf9; + bs.cluster_size = (char) 2; + def_root_dir_entries = 112; + break; + + case 2400: /* 5.25", 2, 15, 80 - 1200K */ + bs.secs_track = CF_LE_W(15); + bs.heads = CF_LE_W(2); + bs.media = (char) 0xf9; + bs.cluster_size = (char)(atari_format ? 2 : 1); + def_root_dir_entries = 224; + break; + + case 5760: /* 3.5", 2, 36, 80 - 2880K */ + bs.secs_track = CF_LE_W(36); + bs.heads = CF_LE_W(2); + bs.media = (char) 0xf0; + bs.cluster_size = (char) 2; + bs.dir_entries[0] = (char) 224; + bs.dir_entries[1] = (char) 0; + break; + + case 2880: /* 3.5", 2, 18, 80 - 1440K */ + bs.secs_track = CF_LE_W(18); + bs.heads = CF_LE_W(2); + bs.media = (char) 0xf0; + bs.cluster_size = (char)(atari_format ? 2 : 1); + def_root_dir_entries = 224; + break; + + default: /* Anything else: default hd setup */ + printf("Loop device does not match a floppy size, using " + "default hd params\n"); + bs.secs_track = CT_LE_W(32); /* these are fake values... */ + bs.heads = CT_LE_W(64); + goto def_hd_params; + } + } + else + /* Must be a hard disk then! */ + { + /* Can we get the drive geometry? (Note I'm not too sure about */ + /* whether to use HDIO_GETGEO or HDIO_REQ) */ + if (ioctl (dev, HDIO_GETGEO, &geometry) || geometry.sectors == 0 || geometry.heads == 0) { + printf ("unable to get drive geometry, using default 255/63\n"); + bs.secs_track = CT_LE_W(63); + bs.heads = CT_LE_W(255); + } + else { + bs.secs_track = CT_LE_W(geometry.sectors); /* Set up the geometry information */ + bs.heads = CT_LE_W(geometry.heads); + } + def_hd_params: + bs.media = (char) 0xf8; /* Set up the media descriptor for a hard drive */ + if (!size_fat && blocks*SECTORS_PER_BLOCK > 1064960) { + if (verbose) printf("Auto-selecting FAT32 for large filesystem\n"); + size_fat = 32; + } + if (size_fat == 32) { + /* For FAT32, try to do the same as M$'s format command + * (see http://www.win.tue.nl/~aeb/linux/fs/fat/fatgen103.pdf p. 20): + * fs size <= 260M: 0.5k clusters + * fs size <= 8G: 4k clusters + * fs size <= 16G: 8k clusters + * fs size > 16G: 16k clusters + */ + unsigned long sz_mb = + (blocks+(1<<(20-BLOCK_SIZE_BITS))-1) >> (20-BLOCK_SIZE_BITS); + bs.cluster_size = sz_mb > 16*1024 ? 32 : + sz_mb > 8*1024 ? 16 : + sz_mb > 260 ? 8 : + 1; + } + else { + /* FAT12 and FAT16: start at 4 sectors per cluster */ + bs.cluster_size = (char) 4; + } + } + + if (!root_dir_entries) + root_dir_entries = def_root_dir_entries; +} + +/* + * If alignment is enabled, round the first argument up to the second; the + * latter must be a power of two. + */ +static unsigned int +align_object (unsigned int sectors, unsigned int clustsize) +{ + if (align_structures) + return (sectors + clustsize - 1) & ~(clustsize - 1); + else + return sectors; +} + +/* Create the filesystem data tables */ + +static void +setup_tables (void) +{ + unsigned num_sectors; + unsigned cluster_count = 0, fat_length; + struct tm *ctime; + struct msdos_volume_info *vi = (size_fat == 32 ? &bs.fat32.vi : &bs.oldfat.vi); + + if (atari_format) + /* On Atari, the first few bytes of the boot sector are assigned + * differently: The jump code is only 2 bytes (and m68k machine code + * :-), then 6 bytes filler (ignored), then 3 byte serial number. */ + memcpy( bs.system_id-1, "mkdosf", 6 ); + else + strcpy (bs.system_id, "mkdosfs"); + if (sectors_per_cluster) + bs.cluster_size = (char) sectors_per_cluster; + if (size_fat == 32) + { + /* Under FAT32, the root dir is in a cluster chain, and this is + * signalled by bs.dir_entries being 0. */ + root_dir_entries = 0; + } + + if (atari_format) { + bs.system_id[5] = (unsigned char) (volume_id & 0x000000ff); + bs.system_id[6] = (unsigned char) ((volume_id & 0x0000ff00) >> 8); + bs.system_id[7] = (unsigned char) ((volume_id & 0x00ff0000) >> 16); + } + else { + vi->volume_id[0] = (unsigned char) (volume_id & 0x000000ff); + vi->volume_id[1] = (unsigned char) ((volume_id & 0x0000ff00) >> 8); + vi->volume_id[2] = (unsigned char) ((volume_id & 0x00ff0000) >> 16); + vi->volume_id[3] = (unsigned char) (volume_id >> 24); + } + + if (!atari_format) { + memcpy(vi->volume_label, volume_name, 11); + + memcpy(bs.boot_jump, dummy_boot_jump, 3); + /* Patch in the correct offset to the boot code */ + bs.boot_jump[1] = ((size_fat == 32 ? + (char *)&bs.fat32.boot_code : + (char *)&bs.oldfat.boot_code) - + (char *)&bs) - 2; + + if (size_fat == 32) { + int offset = (char *)&bs.fat32.boot_code - + (char *)&bs + MESSAGE_OFFSET + 0x7c00; + if (dummy_boot_code[BOOTCODE_FAT32_SIZE-1]) + printf ("Warning: message too long; truncated\n"); + dummy_boot_code[BOOTCODE_FAT32_SIZE-1] = 0; + memcpy(bs.fat32.boot_code, dummy_boot_code, BOOTCODE_FAT32_SIZE); + bs.fat32.boot_code[MSG_OFFSET_OFFSET] = offset & 0xff; + bs.fat32.boot_code[MSG_OFFSET_OFFSET+1] = offset >> 8; + } + else { + memcpy(bs.oldfat.boot_code, dummy_boot_code, BOOTCODE_SIZE); + } + bs.boot_sign = CT_LE_W(BOOT_SIGN); + } + else { + memcpy(bs.boot_jump, dummy_boot_jump_m68k, 2); + } + if (verbose >= 2) + printf( "Boot jump code is %02x %02x\n", + bs.boot_jump[0], bs.boot_jump[1] ); + + if (!reserved_sectors) + reserved_sectors = (size_fat == 32) ? 32 : 1; + else { + if (size_fat == 32 && reserved_sectors < 2) + die("On FAT32 at least 2 reserved sectors are needed."); + } + bs.reserved = CT_LE_W(reserved_sectors); + if (verbose >= 2) + printf( "Using %d reserved sectors\n", reserved_sectors ); + bs.fats = (char) nr_fats; + if (!atari_format || size_fat == 32) + bs.hidden = CT_LE_L(hidden_sectors); + else { + /* In Atari format, hidden is a 16 bit field */ + __u16 hidden = CT_LE_W(hidden_sectors); + if (hidden_sectors & ~0xffff) + die("#hidden doesn't fit in 16bit field of Atari format\n"); + memcpy( &bs.hidden, &hidden, 2 ); + } + + num_sectors = (long long)blocks*BLOCK_SIZE/sector_size; + if (!atari_format) { + unsigned fatdata1216; /* Sectors for FATs + data area (FAT12/16) */ + unsigned fatdata32; /* Sectors for FATs + data area (FAT32) */ + unsigned fatlength12, fatlength16, fatlength32; + unsigned maxclust12, maxclust16, maxclust32; + unsigned clust12, clust16, clust32; + int maxclustsize; + unsigned root_dir_sectors = cdiv(root_dir_entries*32, sector_size); + + /* + * If the filesystem is 8192 sectors or less (4 MB with 512-byte + * sectors, i.e. floppy size), don't align the data structures. + */ + if (num_sectors <= 8192) { + if (align_structures && verbose >= 2) + printf ("Disabling alignment due to tiny filesystem\n"); + + align_structures = FALSE; + } + + if (sectors_per_cluster) + bs.cluster_size = maxclustsize = sectors_per_cluster; + else + /* An initial guess for bs.cluster_size should already be set */ + maxclustsize = 128; + + do { + fatdata32 = num_sectors + - align_object(reserved_sectors, bs.cluster_size); + fatdata1216 = fatdata32 + - align_object(root_dir_sectors, bs.cluster_size); + + if (verbose >= 2) + printf( "Trying with %d sectors/cluster:\n", bs.cluster_size ); + + /* The factor 2 below avoids cut-off errors for nr_fats == 1. + * The "nr_fats*3" is for the reserved first two FAT entries */ + clust12 = 2*((long long) fatdata1216*sector_size + nr_fats*3) / + (2*(int) bs.cluster_size * sector_size + nr_fats*3); + fatlength12 = cdiv(((clust12+2) * 3 + 1) >> 1, sector_size); + fatlength12 = align_object(fatlength12, bs.cluster_size); + /* Need to recalculate number of clusters, since the unused parts of the + * FATS and data area together could make up space for an additional, + * not really present cluster. */ + clust12 = (fatdata1216 - nr_fats*fatlength12)/bs.cluster_size; + maxclust12 = (fatlength12 * 2 * sector_size) / 3; + if (maxclust12 > MAX_CLUST_12) + maxclust12 = MAX_CLUST_12; + if (verbose >= 2) + printf( "FAT12: #clu=%u, fatlen=%u, maxclu=%u, limit=%u\n", + clust12, fatlength12, maxclust12, MAX_CLUST_12 ); + if (clust12 > maxclust12-2) { + clust12 = 0; + if (verbose >= 2) + printf( "FAT12: too much clusters\n" ); + } + + clust16 = ((long long) fatdata1216 *sector_size + nr_fats*4) / + ((int) bs.cluster_size * sector_size + nr_fats*2); + fatlength16 = cdiv ((clust16+2) * 2, sector_size); + fatlength16 = align_object(fatlength16, bs.cluster_size); + /* Need to recalculate number of clusters, since the unused parts of the + * FATS and data area together could make up space for an additional, + * not really present cluster. */ + clust16 = (fatdata1216 - nr_fats*fatlength16)/bs.cluster_size; + maxclust16 = (fatlength16 * sector_size) / 2; + if (maxclust16 > MAX_CLUST_16) + maxclust16 = MAX_CLUST_16; + if (verbose >= 2) + printf( "FAT16: #clu=%u, fatlen=%u, maxclu=%u, limit=%u\n", + clust16, fatlength16, maxclust16, MAX_CLUST_16 ); + if (clust16 > maxclust16-2) { + if (verbose >= 2) + printf( "FAT16: too much clusters\n" ); + clust16 = 0; + } + /* The < 4078 avoids that the filesystem will be misdetected as having a + * 12 bit FAT. */ + if (clust16 < FAT12_THRESHOLD && !(size_fat_by_user && size_fat == 16)) { + if (verbose >= 2) + printf( clust16 < FAT12_THRESHOLD ? + "FAT16: would be misdetected as FAT12\n" : + "FAT16: too much clusters\n" ); + clust16 = 0; + } + + clust32 = ((long long) fatdata32 *sector_size + nr_fats*8) / + ((int) bs.cluster_size * sector_size + nr_fats*4); + fatlength32 = cdiv((clust32+2) * 4, sector_size); + fatlength32 = align_object(fatlength32, bs.cluster_size); + /* Need to recalculate number of clusters, since the unused parts of the + * FATS and data area together could make up space for an additional, + * not really present cluster. */ + clust32 = (fatdata32 - nr_fats*fatlength32)/bs.cluster_size; + maxclust32 = (fatlength32 * sector_size) / 4; + if (maxclust32 > MAX_CLUST_32) + maxclust32 = MAX_CLUST_32; + if (clust32 && clust32 < MIN_CLUST_32 && !(size_fat_by_user && size_fat == 32)) { + clust32 = 0; + if (verbose >= 2) + printf( "FAT32: not enough clusters (%d)\n", MIN_CLUST_32); + } + if (verbose >= 2) + printf( "FAT32: #clu=%u, fatlen=%u, maxclu=%u, limit=%u\n", + clust32, fatlength32, maxclust32, MAX_CLUST_32 ); + if (clust32 > maxclust32) { + clust32 = 0; + if (verbose >= 2) + printf( "FAT32: too much clusters\n" ); + } + + if ((clust12 && (size_fat == 0 || size_fat == 12)) || + (clust16 && (size_fat == 0 || size_fat == 16)) || + (clust32 && size_fat == 32)) + break; + + bs.cluster_size <<= 1; + } while (bs.cluster_size && bs.cluster_size <= maxclustsize); + + /* Use the optimal FAT size if not specified; + * FAT32 is (not yet) choosen automatically */ + if (!size_fat) { + size_fat = (clust16 > clust12) ? 16 : 12; + if (verbose >= 2) + printf( "Choosing %d bits for FAT\n", size_fat ); + } + + switch (size_fat) { + case 12: + cluster_count = clust12; + fat_length = fatlength12; + bs.fat_length = CT_LE_W(fatlength12); + memcpy(vi->fs_type, MSDOS_FAT12_SIGN, 8); + break; + + case 16: + if (clust16 < FAT12_THRESHOLD) { + if (size_fat_by_user) { + fprintf( stderr, "WARNING: Not enough clusters for a " + "16 bit FAT! The filesystem will be\n" + "misinterpreted as having a 12 bit FAT without " + "mount option \"fat=16\".\n" ); + } + else { + fprintf( stderr, "This filesystem has an unfortunate size. " + "A 12 bit FAT cannot provide\n" + "enough clusters, but a 16 bit FAT takes up a little " + "bit more space so that\n" + "the total number of clusters becomes less than the " + "threshold value for\n" + "distinction between 12 and 16 bit FATs.\n" ); + die( "Make the file system a bit smaller manually." ); + } + } + cluster_count = clust16; + fat_length = fatlength16; + bs.fat_length = CT_LE_W(fatlength16); + memcpy(vi->fs_type, MSDOS_FAT16_SIGN, 8); + break; + + case 32: + if (clust32 < MIN_CLUST_32) + fprintf(stderr, "WARNING: Not enough clusters for a 32 bit FAT!\n"); + cluster_count = clust32; + fat_length = fatlength32; + bs.fat_length = CT_LE_W(0); + bs.fat32.fat32_length = CT_LE_L(fatlength32); + memcpy(vi->fs_type, MSDOS_FAT32_SIGN, 8); + root_dir_entries = 0; + break; + + default: + die("FAT not 12, 16 or 32 bits"); + } + + /* Adjust the reserved number of sectors for alignment */ + reserved_sectors = align_object(reserved_sectors, bs.cluster_size); + bs.reserved = CT_LE_W(reserved_sectors); + + /* Adjust the number of root directory entries to help enforce alignment */ + if (align_structures) { + root_dir_entries = align_object(root_dir_sectors, bs.cluster_size) + * (sector_size >> 5); + } + } + else { + unsigned clusters, maxclust, fatdata; + + /* GEMDOS always uses a 12 bit FAT on floppies, and always a 16 bit FAT on + * hard disks. So use 12 bit if the size of the file system suggests that + * this fs is for a floppy disk, if the user hasn't explicitly requested a + * size. + */ + if (!size_fat) + size_fat = (num_sectors == 1440 || num_sectors == 2400 || + num_sectors == 2880 || num_sectors == 5760) ? 12 : 16; + if (verbose >= 2) + printf( "Choosing %d bits for FAT\n", size_fat ); + + /* Atari format: cluster size should be 2, except explicitly requested by + * the user, since GEMDOS doesn't like other cluster sizes very much. + * Instead, tune the sector size for the FS to fit. + */ + bs.cluster_size = sectors_per_cluster ? sectors_per_cluster : 2; + if (!sector_size_set) { + while( num_sectors > GEMDOS_MAX_SECTORS ) { + num_sectors >>= 1; + sector_size <<= 1; + } + } + if (verbose >= 2) + printf( "Sector size must be %d to have less than %d log. sectors\n", + sector_size, GEMDOS_MAX_SECTORS ); + + /* Check if there are enough FAT indices for how much clusters we have */ + do { + fatdata = num_sectors - cdiv (root_dir_entries * 32, sector_size) - + reserved_sectors; + /* The factor 2 below avoids cut-off errors for nr_fats == 1 and + * size_fat == 12 + * The "2*nr_fats*size_fat/8" is for the reserved first two FAT entries + */ + clusters = (2*((long long)fatdata*sector_size - 2*nr_fats*size_fat/8)) / + (2*((int)bs.cluster_size*sector_size + nr_fats*size_fat/8)); + fat_length = cdiv( (clusters+2)*size_fat/8, sector_size ); + /* Need to recalculate number of clusters, since the unused parts of the + * FATS and data area together could make up space for an additional, + * not really present cluster. */ + clusters = (fatdata - nr_fats*fat_length)/bs.cluster_size; + maxclust = (fat_length*sector_size*8)/size_fat; + if (verbose >= 2) + printf( "ss=%d: #clu=%d, fat_len=%d, maxclu=%d\n", + sector_size, clusters, fat_length, maxclust ); + + /* last 10 cluster numbers are special (except FAT32: 4 high bits rsvd); + * first two numbers are reserved */ + if (maxclust <= (size_fat == 32 ? MAX_CLUST_32 : (1<<size_fat)-0x10) && + clusters <= maxclust-2) + break; + if (verbose >= 2) + printf( clusters > maxclust-2 ? + "Too many clusters\n" : "FAT too big\n" ); + + /* need to increment sector_size once more to */ + if (sector_size_set) + die( "With this sector size, the maximum number of FAT entries " + "would be exceeded." ); + num_sectors >>= 1; + sector_size <<= 1; + } while( sector_size <= GEMDOS_MAX_SECTOR_SIZE ); + + if (sector_size > GEMDOS_MAX_SECTOR_SIZE) + die( "Would need a sector size > 16k, which GEMDOS can't work with"); + + cluster_count = clusters; + if (size_fat != 32) + bs.fat_length = CT_LE_W(fat_length); + else { + bs.fat_length = 0; + bs.fat32.fat32_length = CT_LE_L(fat_length); + } + } + + bs.sector_size[0] = (char) (sector_size & 0x00ff); + bs.sector_size[1] = (char) ((sector_size & 0xff00) >> 8); + + bs.dir_entries[0] = (char) (root_dir_entries & 0x00ff); + bs.dir_entries[1] = (char) ((root_dir_entries & 0xff00) >> 8); + + if (size_fat == 32) + { + /* set up additional FAT32 fields */ + bs.fat32.flags = CT_LE_W(0); + bs.fat32.version[0] = 0; + bs.fat32.version[1] = 0; + bs.fat32.root_cluster = CT_LE_L(2); + bs.fat32.info_sector = CT_LE_W(1); + if (!backup_boot) + backup_boot = (reserved_sectors >= 7) ? 6 : + (reserved_sectors >= 2) ? reserved_sectors-1 : 0; + else + { + if (backup_boot == 1) + die("Backup boot sector must be after sector 1"); + else if (backup_boot >= reserved_sectors) + die("Backup boot sector must be a reserved sector"); + } + if (verbose >= 2) + printf( "Using sector %d as backup boot sector (0 = none)\n", + backup_boot ); + bs.fat32.backup_boot = CT_LE_W(backup_boot); + memset( &bs.fat32.reserved2, 0, sizeof(bs.fat32.reserved2) ); + } + + if (atari_format) { + /* Just some consistency checks */ + if (num_sectors >= GEMDOS_MAX_SECTORS) + die( "GEMDOS can't handle more than 65531 sectors" ); + else if (num_sectors >= OLDGEMDOS_MAX_SECTORS) + printf( "Warning: More than 32765 sector need TOS 1.04 " + "or higher.\n" ); + } + if (num_sectors >= 65536) + { + bs.sectors[0] = (char) 0; + bs.sectors[1] = (char) 0; + bs.total_sect = CT_LE_L(num_sectors); + } + else + { + bs.sectors[0] = (char) (num_sectors & 0x00ff); + bs.sectors[1] = (char) ((num_sectors & 0xff00) >> 8); + if (!atari_format) + bs.total_sect = CT_LE_L(0); + } + + if (!atari_format) + vi->ext_boot_sign = MSDOS_EXT_SIGN; + + if (!cluster_count) + { + if (sectors_per_cluster) /* If yes, die if we'd spec'd sectors per cluster */ + die ("Too many clusters for file system - try more sectors per cluster"); + else + die ("Attempting to create a too large file system"); + } + + + /* The two following vars are in hard sectors, i.e. 512 byte sectors! */ + start_data_sector = (reserved_sectors + nr_fats * fat_length) * + (sector_size/HARD_SECTOR_SIZE); + start_data_block = (start_data_sector + SECTORS_PER_BLOCK - 1) / + SECTORS_PER_BLOCK; + + if (blocks < start_data_block + 32) /* Arbitrary undersize file system! */ + die ("Too few blocks for viable file system"); + + if (verbose) + { + printf("%s has %d head%s and %d sector%s per track,\n", + device_name, CF_LE_W(bs.heads), (CF_LE_W(bs.heads) != 1) ? "s" : "", + CF_LE_W(bs.secs_track), (CF_LE_W(bs.secs_track) != 1) ? "s" : ""); + printf("logical sector size is %d,\n",sector_size); + printf("using 0x%02x media descriptor, with %d sectors;\n", + (int) (bs.media), num_sectors); + printf("file system has %d %d-bit FAT%s and %d sector%s per cluster.\n", + (int) (bs.fats), size_fat, (bs.fats != 1) ? "s" : "", + (int) (bs.cluster_size), (bs.cluster_size != 1) ? "s" : ""); + printf ("FAT size is %d sector%s, and provides %d cluster%s.\n", + fat_length, (fat_length != 1) ? "s" : "", + cluster_count, (cluster_count != 1) ? "s" : ""); + printf ("There %s %u reserved sector%s.\n", + (reserved_sectors != 1) ? "are" : "is", + reserved_sectors, + (reserved_sectors != 1) ? "s" : ""); + + if (size_fat != 32) { + unsigned root_dir_entries = + bs.dir_entries[0] + ((bs.dir_entries[1]) * 256); + unsigned root_dir_sectors = + cdiv (root_dir_entries*32, sector_size); + printf ("Root directory contains %u slots and uses %u sectors.\n", + root_dir_entries, root_dir_sectors); + } + printf ("Volume ID is %08lx, ", volume_id & + (atari_format ? 0x00ffffff : 0xffffffff)); + if ( strcmp(volume_name, " ") ) + printf("volume label %s.\n", volume_name); + else + printf("no volume label.\n"); + } + + /* Make the file allocation tables! */ + + if (malloc_entire_fat) + alloced_fat_length = fat_length; + else + alloced_fat_length = 1; + + if ((fat = (unsigned char *) malloc (alloced_fat_length * sector_size)) == NULL) + die ("unable to allocate space for FAT image in memory"); + + memset( fat, 0, alloced_fat_length * sector_size ); + + mark_FAT_cluster (0, 0xffffffff); /* Initial fat entries */ + mark_FAT_cluster (1, 0xffffffff); + fat[0] = (unsigned char) bs.media; /* Put media type in first byte! */ + if (size_fat == 32) { + /* Mark cluster 2 as EOF (used for root dir) */ + mark_FAT_cluster (2, FAT_EOF); + } + + /* Make the root directory entries */ + + size_root_dir = (size_fat == 32) ? + bs.cluster_size*sector_size : + (((int)bs.dir_entries[1]*256+(int)bs.dir_entries[0]) * + sizeof (struct msdos_dir_entry)); + if ((root_dir = (struct msdos_dir_entry *) malloc (size_root_dir)) == NULL) + { + free (fat); /* Tidy up before we die! */ + die ("unable to allocate space for root directory in memory"); + } + + memset(root_dir, 0, size_root_dir); + if ( memcmp(volume_name, " ", 11) ) + { + struct msdos_dir_entry *de = &root_dir[0]; + memcpy(de->name, volume_name, 8); + memcpy(de->ext, volume_name+8, 3); + de->attr = ATTR_VOLUME; + ctime = localtime(&create_time); + de->time = CT_LE_W((unsigned short)((ctime->tm_sec >> 1) + + (ctime->tm_min << 5) + (ctime->tm_hour << 11))); + de->date = CT_LE_W((unsigned short)(ctime->tm_mday + + ((ctime->tm_mon+1) << 5) + + ((ctime->tm_year-80) << 9))); + de->ctime_ms = 0; + de->ctime = de->time; + de->cdate = de->date; + de->adate = de->date; + de->starthi = CT_LE_W(0); + de->start = CT_LE_W(0); + de->size = CT_LE_L(0); + } + + if (size_fat == 32) { + /* For FAT32, create an info sector */ + struct fat32_fsinfo *info; + + if (!(info_sector = malloc( sector_size ))) + die("Out of memory"); + memset(info_sector, 0, sector_size); + /* fsinfo structure is at offset 0x1e0 in info sector by observation */ + info = (struct fat32_fsinfo *)(info_sector + 0x1e0); + + /* Info sector magic */ + info_sector[0] = 'R'; + info_sector[1] = 'R'; + info_sector[2] = 'a'; + info_sector[3] = 'A'; + + /* Magic for fsinfo structure */ + info->signature = CT_LE_L(0x61417272); + /* We've allocated cluster 2 for the root dir. */ + info->free_clusters = CT_LE_L(cluster_count - 1); + info->next_cluster = CT_LE_L(2); + + /* Info sector also must have boot sign */ + *(__u16 *)(info_sector + 0x1fe) = CT_LE_W(BOOT_SIGN); + } + + if (!(blank_sector = malloc( sector_size ))) + die( "Out of memory" ); + memset(blank_sector, 0, sector_size); +} + + +/* Write the new filesystem's data tables to wherever they're going to end up! */ + +#define error(str) \ + do { \ + free (fat); \ + if (info_sector) free (info_sector); \ + free (root_dir); \ + die (str); \ + } while(0) + +#define seekto(pos,errstr) \ + do { \ + loff_t __pos = (pos); \ + if (llseek (dev, __pos, SEEK_SET) != __pos) \ + error ("seek to " errstr " failed whilst writing tables"); \ + } while(0) + +#define writebuf(buf,size,errstr) \ + do { \ + int __size = (size); \ + if (write (dev, buf, __size) != __size) \ + error ("failed whilst writing " errstr); \ + } while(0) + + +static void +write_tables (void) +{ + int x; + int fat_length; + + fat_length = (size_fat == 32) ? + CF_LE_L(bs.fat32.fat32_length) : CF_LE_W(bs.fat_length); + + seekto( 0, "start of device" ); + /* clear all reserved sectors */ + for( x = 0; x < reserved_sectors; ++x ) + writebuf( blank_sector, sector_size, "reserved sector" ); + /* seek back to sector 0 and write the boot sector */ + seekto( 0, "boot sector" ); + writebuf( (char *) &bs, sizeof (struct msdos_boot_sector), "boot sector" ); + /* on FAT32, write the info sector and backup boot sector */ + if (size_fat == 32) + { + seekto( CF_LE_W(bs.fat32.info_sector)*sector_size, "info sector" ); + writebuf( info_sector, 512, "info sector" ); + if (backup_boot != 0) + { + seekto( backup_boot*sector_size, "backup boot sector" ); + writebuf( (char *) &bs, sizeof (struct msdos_boot_sector), + "backup boot sector" ); + } + } + /* seek to start of FATS and write them all */ + seekto( reserved_sectors*sector_size, "first FAT" ); + for (x = 1; x <= nr_fats; x++) { + int y; + int blank_fat_length = fat_length - alloced_fat_length; + writebuf( fat, alloced_fat_length * sector_size, "FAT" ); + for (y=0; y<blank_fat_length; y++) + writebuf( blank_sector, sector_size, "FAT" ); + } + /* Write the root directory directly after the last FAT. This is the root + * dir area on FAT12/16, and the first cluster on FAT32. */ + writebuf( (char *) root_dir, size_root_dir, "root directory" ); + + if (blank_sector) free( blank_sector ); + if (info_sector) free( info_sector ); + free (root_dir); /* Free up the root directory space from setup_tables */ + free (fat); /* Free up the fat table space reserved during setup_tables */ +} + + +/* Report the command usage and return a failure error code */ + +void +usage (void) +{ + fatal_error("\ +Usage: mkdosfs [-a][-A][-c][-C][-v][-I][-l bad-block-file][-b backup-boot-sector]\n\ + [-m boot-msg-file][-n volume-name][-i volume-id]\n\ + [-s sectors-per-cluster][-S logical-sector-size][-f number-of-FATs]\n\ + [-h hidden-sectors][-F fat-size][-r root-dir-entries][-R reserved-sectors]\n\ + /dev/name [blocks]\n"); +} + +/* + * ++roman: On m68k, check if this is an Atari; if yes, turn on Atari variant + * of MS-DOS filesystem by default. + */ +static void check_atari( void ) +{ +#ifdef __mc68000__ + FILE *f; + char line[128], *p; + + if (!(f = fopen( "/proc/hardware", "r" ))) { + perror( "/proc/hardware" ); + return; + } + + while( fgets( line, sizeof(line), f ) ) { + if (strncmp( line, "Model:", 6 ) == 0) { + p = line + 6; + p += strspn( p, " \t" ); + if (strncmp( p, "Atari ", 6 ) == 0) + atari_format = 1; + break; + } + } + fclose( f ); +#endif +} + +/* The "main" entry point into the utility - we pick up the options and attempt to process them in some sort of sensible + way. In the event that some/all of the options are invalid we need to tell the user so that something can be done! */ + +int +main (int argc, char **argv) +{ + int c; + char *tmp; + char *listfile = NULL; + FILE *msgfile; + struct stat statbuf; + int i = 0, pos, ch; + int create = 0; + unsigned long long cblocks = 0; + int min_sector_size; + + if (argc && *argv) { /* What's the program name? */ + char *p; + program_name = *argv; + if ((p = strrchr( program_name, '/' ))) + program_name = p+1; + } + + gettimeofday(&create_timeval, NULL); + create_time = create_timeval.tv_sec; + volume_id = (u_int32_t)( (create_timeval.tv_sec << 20) | create_timeval.tv_usec ); /* Default volume ID = creation time, fudged for more uniqueness */ + check_atari(); + + printf ("%s " VERSION " (" VERSION_DATE ")\n", + program_name); + + while ((c = getopt (argc, argv, "aAb:cCf:F:Ii:l:m:n:r:R:s:S:h:v")) != EOF) + /* Scan the command line for options */ + switch (c) + { + case 'A': /* toggle Atari format */ + atari_format = !atari_format; + break; + + case 'a': /* a : skip alignment */ + align_structures = FALSE; + break; + + case 'b': /* b : location of backup boot sector */ + backup_boot = (int) strtol (optarg, &tmp, 0); + if (*tmp || backup_boot < 2 || backup_boot > 0xffff) + { + printf ("Bad location for backup boot sector : %s\n", optarg); + usage (); + } + break; + + case 'c': /* c : Check FS as we build it */ + check = TRUE; + malloc_entire_fat = TRUE; /* Need to be able to mark clusters bad */ + break; + + case 'C': /* C : Create a new file */ + create = TRUE; + break; + + case 'f': /* f : Choose number of FATs */ + nr_fats = (int) strtol (optarg, &tmp, 0); + if (*tmp || nr_fats < 1 || nr_fats > 4) + { + printf ("Bad number of FATs : %s\n", optarg); + usage (); + } + break; + + case 'F': /* F : Choose FAT size */ + size_fat = (int) strtol (optarg, &tmp, 0); + if (*tmp || (size_fat != 12 && size_fat != 16 && size_fat != 32)) + { + printf ("Bad FAT type : %s\n", optarg); + usage (); + } + size_fat_by_user = 1; + break; + + case 'h': /* h : number of hidden sectors */ + hidden_sectors = (int) strtol (optarg, &tmp, 0); + if ( *tmp || hidden_sectors < 0 ) + { + printf("Bad number of hidden sectors : %s\n", optarg); + usage (); + } + break; + + case 'I': + ignore_full_disk = 1; + break; + + case 'i': /* i : specify volume ID */ + volume_id = strtoul(optarg, &tmp, 16); + if ( *tmp ) + { + printf("Volume ID must be a hexadecimal number\n"); + usage(); + } + break; + + case 'l': /* l : Bad block filename */ + listfile = optarg; + malloc_entire_fat = TRUE; /* Need to be able to mark clusters bad */ + break; + + case 'm': /* m : Set boot message */ + if ( strcmp(optarg, "-") ) + { + msgfile = fopen(optarg, "r"); + if ( !msgfile ) + perror(optarg); + } + else + msgfile = stdin; + + if ( msgfile ) + { + /* The boot code ends at offset 448 and needs a null terminator */ + i = MESSAGE_OFFSET; + pos = 0; /* We are at beginning of line */ + do + { + ch = getc(msgfile); + switch (ch) + { + case '\r': /* Ignore CRs */ + case '\0': /* and nulls */ + break; + + case '\n': /* LF -> CR+LF if necessary */ + if ( pos ) /* If not at beginning of line */ + { + dummy_boot_code[i++] = '\r'; + pos = 0; + } + dummy_boot_code[i++] = '\n'; + break; + + case '\t': /* Expand tabs */ + do + { + dummy_boot_code[i++] = ' '; + pos++; + } + while ( pos % 8 && i < BOOTCODE_SIZE-1 ); + break; + + case EOF: + dummy_boot_code[i++] = '\0'; /* Null terminator */ + break; + + default: + dummy_boot_code[i++] = ch; /* Store character */ + pos++; /* Advance position */ + break; + } + } + while ( ch != EOF && i < BOOTCODE_SIZE-1 ); + + /* Fill up with zeros */ + while( i < BOOTCODE_SIZE-1 ) + dummy_boot_code[i++] = '\0'; + dummy_boot_code[BOOTCODE_SIZE-1] = '\0'; /* Just in case */ + + if ( ch != EOF ) + printf ("Warning: message too long; truncated\n"); + + if ( msgfile != stdin ) + fclose(msgfile); + } + break; + + case 'n': /* n : Volume name */ + sprintf(volume_name, "%-11.11s", optarg); + break; + + case 'r': /* r : Root directory entries */ + root_dir_entries = (int) strtol (optarg, &tmp, 0); + if (*tmp || root_dir_entries < 16 || root_dir_entries > 32768) + { + printf ("Bad number of root directory entries : %s\n", optarg); + usage (); + } + break; + + case 'R': /* R : number of reserved sectors */ + reserved_sectors = (int) strtol (optarg, &tmp, 0); + if (*tmp || reserved_sectors < 1 || reserved_sectors > 0xffff) + { + printf ("Bad number of reserved sectors : %s\n", optarg); + usage (); + } + break; + + case 's': /* s : Sectors per cluster */ + sectors_per_cluster = (int) strtol (optarg, &tmp, 0); + if (*tmp || (sectors_per_cluster != 1 && sectors_per_cluster != 2 + && sectors_per_cluster != 4 && sectors_per_cluster != 8 + && sectors_per_cluster != 16 && sectors_per_cluster != 32 + && sectors_per_cluster != 64 && sectors_per_cluster != 128)) + { + printf ("Bad number of sectors per cluster : %s\n", optarg); + usage (); + } + break; + + case 'S': /* S : Sector size */ + sector_size = (int) strtol (optarg, &tmp, 0); + if (*tmp || (sector_size != 512 && sector_size != 1024 && + sector_size != 2048 && sector_size != 4096 && + sector_size != 8192 && sector_size != 16384 && + sector_size != 32768)) + { + printf ("Bad logical sector size : %s\n", optarg); + usage (); + } + sector_size_set = 1; + break; + + case 'v': /* v : Verbose execution */ + ++verbose; + break; + + default: + printf( "Unknown option: %c\n", c ); + usage (); + } + if (optind < argc) + { + device_name = argv[optind]; /* Determine the number of blocks in the FS */ + + if (!device_name) { + printf("No device specified.\n"); + usage(); + } + + if (!create) + cblocks = count_blocks (device_name); /* Have a look and see! */ + } + if (optind == argc - 2) /* Either check the user specified number */ + { + blocks = strtoull (argv[optind + 1], &tmp, 0); + if (!create && blocks != cblocks) + { + fprintf (stderr, "Warning: block count mismatch: "); + fprintf (stderr, "found %llu but assuming %llu.\n",cblocks,blocks); + } + } + else if (optind == argc - 1) /* Or use value found */ + { + if (create) + die( "Need intended size with -C." ); + blocks = cblocks; + tmp = ""; + } + else + { + fprintf (stderr, "No device specified!\n"); + usage (); + } + if (*tmp) + { + printf ("Bad block count : %s\n", argv[optind + 1]); + usage (); + } + + if (check && listfile) /* Auto and specified bad block handling are mutually */ + die ("-c and -l are incompatible"); /* exclusive of each other! */ + + if (!create) { + check_mount (device_name); /* Is the device already mounted? */ + dev = open (device_name, O_EXCL|O_RDWR); /* Is it a suitable device to build the FS on? */ + if (dev < 0) + die ("unable to open %s"); + } + else { + loff_t offset = blocks*BLOCK_SIZE - 1; + char null = 0; + /* create the file */ + dev = open( device_name, O_EXCL|O_RDWR|O_CREAT|O_TRUNC, 0666 ); + if (dev < 0) + die("unable to create %s"); + /* seek to the intended end-1, and write one byte. this creates a + * sparse-as-possible file of appropriate size. */ + if (llseek( dev, offset, SEEK_SET ) != offset) + die( "seek failed" ); + if (write( dev, &null, 1 ) < 0) + die( "write failed" ); + if (llseek( dev, 0, SEEK_SET ) != 0) + die( "seek failed" ); + } + + if (fstat (dev, &statbuf) < 0) + die ("unable to stat %s"); + if (!S_ISBLK (statbuf.st_mode)) { + statbuf.st_rdev = 0; + check = 0; + } + else + /* + * Ignore any 'full' fixed disk devices, if -I is not given. + * On a MO-disk one doesn't need partitions. The filesytem can go + * directly to the whole disk. Under other OSes this is known as + * the 'superfloppy' format. As I don't know how to find out if + * this is a MO disk I introduce a -I (ignore) switch. -Joey + */ + if (!ignore_full_disk && ( + (statbuf.st_rdev & 0xff3f) == 0x0300 || /* hda, hdb */ + (statbuf.st_rdev & 0xff0f) == 0x0800 || /* sd */ + (statbuf.st_rdev & 0xff3f) == 0x0d00 || /* xd */ + (statbuf.st_rdev & 0xff3f) == 0x1600 ) /* hdc, hdd */ + ) + die ("Device partition expected, not making filesystem on entire device '%s' (use -I to override)"); + + if (sector_size_set) + { + if (ioctl(dev, BLKSSZGET, &min_sector_size) >= 0) + if (sector_size < min_sector_size) + { + sector_size = min_sector_size; + fprintf(stderr, "Warning: sector size was set to %d (minimal for this device)\n", sector_size); + } + } + else + { + if (ioctl(dev, BLKSSZGET, &min_sector_size) >= 0) + { + sector_size = min_sector_size; + sector_size_set = 1; + } + } + + if (sector_size > 4096) + fprintf(stderr, + "Warning: sector size is set to %d > 4096, such filesystem will not propably mount\n", + sector_size); + + establish_params (statbuf.st_rdev,statbuf.st_size); + /* Establish the media parameters */ + + setup_tables (); /* Establish the file system tables */ + + if (check) /* Determine any bad block locations and mark them */ + check_blocks (); + else if (listfile) + get_list_blocks (listfile); + + write_tables (); /* Write the file system tables away! */ + + exit (0); /* Terminate with no errors! */ +} diff --git a/src/version.h b/src/version.h new file mode 100644 index 0000000..dde3e0b --- /dev/null +++ b/src/version.h @@ -0,0 +1,28 @@ +/* version.h + + Copyright (C) 1998-2005 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + On Debian systems, the complete text of the GNU General Public License + can be found in /usr/share/common-licenses/GPL-3 file. +*/ + +#ifndef _version_h +#define _version_h + +#define VERSION "3.0.10" +#define VERSION_DATE "12 Sep 2010" + +#endif |