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2014-10-23qemu-img: Print error if check failedMax Reitz1-7/+14
Currently, if bdrv_check() fails either by returning -errno or having check_errors set, qemu-img check just exits with 1 after having told the user that there were no errors on the image. This is bad. Instead of printing the check result if there were internal errors which were so bad that bdrv_check() could not even complete with 0 as a return value, qemu-img check should inform the user about the error. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
2014-10-20block: Make BlockBackend own its BlockDriverStateMarkus Armbruster1-34/+1
On BlockBackend destruction, unref its BlockDriverState. Replaces the callers' unrefs. This turns the pointer from BlockBackend to BlockDriverState into a strong reference, managed with bdrv_ref() / bdrv_unref(). The back-pointer remains weak. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-10-20block: Connect BlockBackend to BlockDriverStateMarkus Armbruster1-66/+59
Convenience function blk_new_with_bs() creates a BlockBackend with its BlockDriverState. Callers have to unref both. The commit after next will relieve them of the need to unref the BlockDriverState. Complication: due to the silly way drive_del works, we need a way to hide a BlockBackend, just like bdrv_make_anon(). To emphasize its "special" status, give the function a suitably off-putting name: blk_hide_on_behalf_of_do_drive_del(). Unfortunately, hiding turns the BlockBackend's name into the empty string. Can't avoid that without breaking the blk->bs->device_name equals blk->name invariant. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-10-20block: New BlockBackendMarkus Armbruster1-8/+62
A block device consists of a frontend device model and a backend. A block backend has a tree of block drivers doing the actual work. The tree is managed by the block layer. We currently use a single abstraction BlockDriverState both for tree nodes and the backend as a whole. Drawbacks: * Its API includes both stuff that makes sense only at the block backend level (root of the tree) and stuff that's only for use within the block layer. This makes the API bigger and more complex than necessary. Moreover, it's not obvious which interfaces are meant for device models, and which really aren't. * Since device models keep a reference to their backend, the backend object can't just be destroyed. But for media change, we need to replace the tree. Our solution is to make the BlockDriverState generic, with actual driver state in a separate object, pointed to by member opaque. That lets us replace the tree by deinitializing and reinitializing its root. This special need of the root makes the data structure awkward everywhere in the tree. The general plan is to separate the APIs into "block backend", for use by device models, monitor and whatever other code dealing with block backends, and "block driver", for use by the block layer and whatever other code (if any) dealing with trees and tree nodes. Code dealing with block backends, device models in particular, should become completely oblivious of BlockDriverState. This should let us clean up both APIs, and the tree data structures. This commit is a first step. It creates a minimal "block backend" API: type BlockBackend and functions to create, destroy and find them. BlockBackend objects are created and destroyed exactly when root BlockDriverState objects are created and destroyed. "Root" in the sense of "in bdrv_states". They're not yet used for anything; that'll come shortly. A root BlockDriverState is created with bdrv_new_root(), so where to create a BlockBackend is obvious. Where these roots get destroyed isn't always as obvious. It is obvious in qemu-img.c, qemu-io.c and qemu-nbd.c, and in error paths of blockdev_init(), blk_connect(). That leaves destruction of objects successfully created by blockdev_init() and blk_connect(). blockdev_init() is used only by drive_new() and qmp_blockdev_add(). Objects created by the latter are currently indestructible (see commit 48f364d "blockdev: Refuse to drive_del something added with blockdev-add" and commit 2d246f0 "blockdev: Introduce DriveInfo.enable_auto_del"). Objects created by the former get destroyed by drive_del(). Objects created by blk_connect() get destroyed by blk_disconnect(). BlockBackend is reference-counted. Its reference count never exceeds one so far, but that's going to change. In drive_del(), the BB's reference count is surely one now. The BDS's reference count is greater than one when something else is holding a reference, such as a block job. In this case, the BB is destroyed right away, but the BDS lives on until all extra references get dropped. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-10-20block: Split bdrv_new_root() off bdrv_new()Markus Armbruster1-3/+3
Creating an anonymous BDS can't fail. Make that obvious. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Benoît Canet <benoit.canet@nodalink.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-10-03block: Drop superfluous conditionals around qemu_opts_del()Markus Armbruster1-3/+1
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1411999675-14533-1-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-09-25block: Validate node-nameKevin Wolf1-3/+3
The device_name of a BlockDriverState is currently checked because it is always used as a QemuOpts ID and qemu_opts_create() checks whether such IDs are wellformed. node-name is supposed to share the same namespace, but it isn't checked currently. This patch adds explicit checks both for device_name and node-name so that the same rules will still apply even if QemuOpts won't be used any more at some point. qemu-img used to use names with spaces in them, which isn't allowed any more. Replace them with underscores. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-09-22async: aio_context_new(): Handle event_notifier_init failureChrysostomos Nanakos1-1/+7
On a system with a low limit of open files the initialization of the event notifier could fail and QEMU exits without printing any error information to the user. The problem can be easily reproduced by enforcing a low limit of open files and start QEMU with enough I/O threads to hit this limit. The same problem raises, without the creation of I/O threads, while QEMU initializes the main event loop by enforcing an even lower limit of open files. This commit adds an error message on failure: # qemu [...] -object iothread,id=iothread0 -object iothread,id=iothread1 qemu: Failed to initialize event notifier: Too many open files in system Signed-off-by: Chrysostomos Nanakos <cnanakos@grnet.gr> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-09-08qemu-img: clarify src_cache option documentationStefan Hajnoczi1-1/+2
The source cache option takes the same values as the cache option. The documentation reads a little strange because it starts with "In contrast the src_cache option ...". The fact that this is comparing with the previous documented option (the 'cache' option) is implicit. Readers may be confused, especially if they jump to src_cache without reading cache documentation first. Suggested-by: Jeff Nelson <jenelson@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2014-08-29qemu-img: always goto out in img_snapshot() error pathsStefan Hajnoczi1-9/+6
The out label has the qemu_progress_end() and other cleanup calls. Always goto out in error paths so the cleanup happens. These error paths now return 1 instead of -1. Note that bdrv_unref(NULL) is safe. We just need to initialize bs to NULL at the top of the function. We can now remove the obsolete bs_old_backing = NULL and bs_new_backing = NULL for safe mode. Originally it was necessary in commit 3e85c6fd ("qemu-img rebase") but became useless in commit c2abcce ("qemu-img: avoid calling exit(1) to release resources properly") because the variables are already initialized during declaration. Reported-by: John Snow <jsnow@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2014-08-29qemu-img: fix img_compare() flags error pathStefan Hajnoczi1-3/+3
If img_compare() fails to parse the cache flags the goto out3 code path will call qemu_progress_end(). Make sure we actually call qemu_progress_init() first. Reported-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2014-08-29qemu-img: fix img_commit() error return valueStefan Hajnoczi1-1/+1
The img_commit() return value is a process exit code. Use 1 for failure instead of -1. The other failure paths in this function already use 1. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2014-08-28Revert "qemu-img: sort block formats in help message"Stefan Hajnoczi1-22/+3
This reverts commit 1a443c1b8b4314d365e82bddeb1de5b4b1c15fb3 and the later commit 395071a76328189f50c778f4dee6dabb90503dd9. GSequence was introduced in glib 2.14. RHEL 5 fails to compile since it uses glib 2.12.3. Now that bdrv_iterate_format() invokes the iteration callback in sorted order these commits are unnecessary. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Benoît Canet <benoit.canet@nodalink.com>
2014-08-22qemu-img: Allow cache mode specification for amendMax Reitz1-4/+15
qemu-img amend may extensively modify the target image, depending on the options to be amended (e.g. conversion to qcow2 compat level 0.10 from 1.1 for an image with many unallocated zero clusters). Therefore it makes sense to allow the user to specify the cache mode to be used. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-08-22qemu-img: Allow source cache mode specificationMax Reitz1-16/+62
Many qemu-img subcommands only read the source file(s) once. For these use cases, a full write-back cache is unnecessary and mainly clutters host cache memory. Though this is generally no concern as cache memory is freely available and can be scaled by the host OS, it may become a concern with thin provisioning. For these cases, it makes sense to allow users to freely specify the source cache mode (e.g. use no cache at all). This commit adds a new switch (-T) for the qemu-img subcommands check, compare, convert and rebase to specify the cache to be used for source images (the backing file in case of rebase). Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-08-15Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell1-31/+67
Block patches # gpg: Signature made Fri 15 Aug 2014 14:07:42 BST using RSA key ID C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" * remotes/kevin/tags/for-upstream: (59 commits) block: Catch !bs->drv in bdrv_check() iotests: Add test for image header overlap qcow2: Catch !*host_offset for data allocation qcow2: Return useful error code in refcount_init() mirror: Handle failure for potentially large allocations vpc: Handle failure for potentially large allocations vmdk: Handle failure for potentially large allocations vhdx: Handle failure for potentially large allocations vdi: Handle failure for potentially large allocations rbd: Handle failure for potentially large allocations raw-win32: Handle failure for potentially large allocations raw-posix: Handle failure for potentially large allocations qed: Handle failure for potentially large allocations qcow2: Handle failure for potentially large allocations qcow1: Handle failure for potentially large allocations parallels: Handle failure for potentially large allocations nfs: Handle failure for potentially large allocations iscsi: Handle failure for potentially large allocations dmg: Handle failure for potentially large allocations curl: Handle failure for potentially large allocations ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-15block: Avoid bdrv_get_geometry() where errors should be detectedMarkus Armbruster1-14/+50
bdrv_get_geometry() hides errors. Use bdrv_nb_sectors() or bdrv_getlength() instead where that's obviously inappropriate. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-08-15qemu-img: Make img_convert() get image size just once per imageMarkus Armbruster1-16/+16
Chiefly so I don't have to do the error checking in quadruplicate in the next commit. Moreover, replacing the frequently updated bs_sectors by an array assigned just once makes the code easier to understand. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-08-15block: Use bdrv_nb_sectors() in img_convert()Markus Armbruster1-4/+4
Instead of bdrv_getlength(). Replace variable output_length by output_sectors. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-08-09qemu-img: Check getchar() return value in read_password() for WIN32Chen Gang1-2/+7
getchar() is a standard c library function which may return with failure (e.g. -1), so like another platforms, also need check it under WIN32. And make the related code match current qemu code styles, too. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-07-18qemu-img: Remove redundancy "ret = -1"Chen Gang1-1/+0
In this case, 'ret' is already '-1', so need not do it again. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-06-16cleanup QEMUOptionParameterChunyan Liu1-12/+7
Now that all backend drivers are using QemuOpts, remove all QEMUOptionParameter related codes. Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Chunyan Liu <cyliu@suse.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-16change block layer to support both QemuOpts and QEMUOptionParamterChunyan Liu1-50/+46
Change block layer to support both QemuOpts and QEMUOptionParameter. After this patch, it will change backend drivers one by one. At the end, QEMUOptionParameter will be removed and only QemuOpts is kept. Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Chunyan Liu <cyliu@suse.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-04qemu-img: Document check exit codesMax Reitz1-4/+5
The exit code 63 (check not supported by image format) was not even documented in the comment above the check command in the source code; add it, as it does indeed seem useful. Also, document all of check's exit codes in the manpage. Signed-off-by: Max Reitz <mreitz@redhat.com> Reported-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-02qemu-img: Report error even with --oformat=jsonMax Reitz1-3/+1
img_check() should report that the format of the given image does not support checks even if JSON output is desired. JSON data is output to stdout, as opposed to error messages, which are (in the case of qemu-img) printed to stderr. Therefore, it is easy to distinguish between the two. Also, img_info() does already use error_report() for human-readable messages even though JSON output is desired (through collect_image_info_list()). Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-05-30qemu-img: Plug memory leak in convert commandMarkus Armbruster1-1/+1
Introduced in commit 661a0f7. Spotted by Coverity. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-05-30qemu-img: Plug memory leak on block option help error pathMarkus Armbruster1-0/+1
Introduced in commit a283cb6; mostly harmless. Spotted by Coverity. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-05-19Remove g_sequence_lookup from qemu-img help functionMike Day1-5/+2
g_sequence_lookup is not supported by glib < 2.28. The usage of g_sequence_lookup is not essential in this context (it's a safeguard against duplicate values in the help message). Removing the call enables the build on all platforms and does not change the operation of the help function. Signed-off-by: Mike Day <ncmike@ncultra.org> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-05-09qemu-img: Convert by cluster size if target is compressedFam Zheng1-0/+1
If target block driver forces compression, qemu-img convert needs to write by cluster size as well as "-c" option. Particularly, this applies for converting to VMDK streamOptimized format. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-09qemu-img: sort block formats in help messageMike Day1-3/+25
The help message for qemu-img lists the supported block formats, of which there are 27 as of version 2.0.50. The formats are printed in the order of their driver's position in a linked list, which appears random. This patch prints the formats in sorted order, making it easier to read and to find a specific format in the list. [Added suggestions from Fam Zheng <famz@redhat.com> to declare variables at the top of the scope in help() and to omit explicit cast for void* opaque. --Stefan] Signed-off-by: Mike Day <ncmike@ncultra.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-04-29block: Add '--version' option to qemu-imgJeff Cody1-4/+11
This allows qemu-img to print out version information, without needing to print the long help wall of text. While there, perform some minor whitespace cleanup, and remove the unused option_index variable in the call to getopt_long(). Reported-by: Eric Blake <eblake@redhat.com> Signed-off-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-04-28block: fix qemu-img --help invocationJeff Cody1-2/+13
This fixes a bug introduced in commit ac1307ab, that caused the '--help' option to not be recognized as a valid command, and not print any help. Signed-off-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-04-25qemu-img: Consistently name Error * objects err, and not errpMarkus Armbruster1-6/+6
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-04-22qemu-img: Improve error messagesFam Zheng1-28/+46
Previously, when there is a user error in argv parsing, qemu-img prints help text and exits. Add an error_exit function to print a helpful error message and a hint to run 'qemu-img --help' for more information. As a bonus, "qemu-img <cmd> --help" now has a more reasonable exit code 0. In the future the help text should be split by sub command, and only print the information for the specified command. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-04-22qemu-img: Avoid duplicate block device IDsKevin Wolf1-16/+22
qemu-img used to use "image" as ID for all block devices. This means that e.g. img_convert() ended up with potentially multiple source images and one target image, all with the same ID. The next patch will catch this and fail to open the block device. This patch makes sure that qemu-img uses meaningful unique IDs for the block devices it uses. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-04-22block: Add errp to bdrv_new()Kevin Wolf1-3/+3
This patch adds an errp parameter to bdrv_new() and updates all its callers. The next patches will make use of this in order to check for duplicate IDs. Most of the callers know that their ID is fine, so they can simply assert that there is no error. Behaviour doesn't change with this patch yet as bdrv_new() doesn't actually assign errors to errp. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-04-01qemu-img: Release reference to BlockDriverStatePrasad Joshi1-0/+1
Signed-off-by: Prasad Joshi <prasadjoshi.linux@gmail.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-03-25qemu-img: mandate argument to 'qemu-img check --repair'Prasad Joshi1-1/+1
qemu-img check --repair option accepts an argument. The argument to --repair switch can either be 'all' or 'leak'. Fix the long option to mandate argument with --repair switch. The patch fixes following segmentation fault Core was generated by `qemu-img check -f qcow2 --repair all t.qcow2'. Program terminated with signal 11, Segmentation fault. 0 in img_check (argc=6, argv=0x7fffab9b8a10) at qemu-img.c:588 588 if (!strcmp(optarg, "leaks")) { (gdb) bt 0 img_check (argc=6, argv=0x7fffab9b8a10) at qemu-img.c:588 1 __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 2 _start () (gdb) Signed-off-by: Prasad Joshi <prasadjoshi.linux@gmail.com> Reviewed-by: Leandro Dorileo <l@dorileo.org> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-03-05qemu-img convert: Fix progress outputKevin Wolf1-9/+11
Initialise progress output only when the -p and -q options have already been parsed, otherwise it's always disabled. Reported-by: Peter Lieven <pl@kamp.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-03-03qemu-img: Remove unneeded include filesStefan Weil1-6/+0
There is no dependency on windows.h, and the standard include files are already included by qemu-common.h. Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-02-25Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell1-45/+100
Block patches # gpg: Signature made Fri 21 Feb 2014 21:42:24 GMT using RSA key ID C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" * remotes/kevin/tags/for-upstream: (54 commits) iotests: Mixed quorum child device specifications quorum: Simplify quorum_open() quorum: Add unit test. quorum: Add quorum_open() and quorum_close(). quorum: Implement recursive .bdrv_recurse_is_first_non_filter in quorum. quorum: Add quorum_co_flush(). quorum: Add quorum_invalidate_cache(). quorum: Add quorum_getlength(). quorum: Add quorum mechanism. quorum: Add quorum_aio_readv. blkverify: Extract qemu_iovec_clone() and qemu_iovec_compare() from blkverify. quorum: Add quorum_aio_writev and its dependencies. quorum: Create BDRVQuorumState and BlkDriver and do init. quorum: Create quorum.c, add QuorumChildRequest and QuorumAIOCB. check-qdict: Test termination of qdict_array_split() check-qdict: Adjust test for qdict_array_split() qdict: Extract non-QDicts in qdict_array_split() qemu-config: Sections must consist of keys qemu-iotests: Check qemu-img command line parsing qemu-img: Allow -o help with incomplete argument list ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-02-24Merge remote-tracking branch 'remotes/bonzini/configure' into stagingPeter Maydell1-0/+1
* remotes/bonzini/configure: build: softmmu targets do not have a "main.o" file configure: Disable libtool if -fPIE does not work with it (bug #1257099) block: convert block drivers linked with libs to modules Makefile: introduce common-obj-m and block-obj-m for DSO Makefile: install modules with "make install" module: implement module loading rules.mak: introduce DSO rules darwin: do not use -mdynamic-no-pic block: use per-object cflags and libs rules.mak: allow per object cflags and libs rules.mak: fix $(obj) to a real relative path util: Split out exec_dir from os_find_datadir Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-02-21qemu-img: Allow -o help with incomplete argument listKevin Wolf1-23/+35
This patch allows using 'qemu-img $subcmd -o help' for the create, convert and amend subcommands, without specifying the previously required filename arguments. Note that it's still allowed and meaningful to specify a filename: An invocation like 'qemu-img create -o help sheepdog:foo' will also display options that are provided by the Sheepdog driver. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-02-21qemu-img amend: Support multiple -o optionsKevin Wolf1-2/+15
Instead of ignoring all option values but the last one, multiple -o options now have the same meaning as having a single option with all settings in the order of their respective -o options. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-02-21qemu-img convert: Support multiple -o optionsKevin Wolf1-9/+25
Instead of ignoring all option values but the last one, multiple -o options now have the same meaning as having a single option with all settings in the order of their respective -o options. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-02-21qemu-img create: Support multiple -o optionsKevin Wolf1-6/+22
If you specified multiple -o options for qemu-img create, it would silently ignore all but the last one. This patch fixes the problem. Now multiple -o options has the same meaning as having a single option with all settings in the order of their respective -o options. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-02-21block: Add reference parameter to bdrv_open()Max Reitz1-4/+4
Allow bdrv_open() to handle references to existing block devices just as bdrv_file_open() is already capable of. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-02-21block: Change BDS parameter of bdrv_open() to **Max Reitz1-6/+4
Make bdrv_open() take a pointer to a BDS pointer, similarly to bdrv_file_open(). If a pointer to a NULL pointer is given, bdrv_open() will create a new BDS with an empty name; if the BDS pointer is not NULL, that existing BDS will be reused (in the same way as bdrv_open() already did). Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-02-20util: Split out exec_dir from os_find_datadirFam Zheng1-0/+1
With this change, main() calls qemu_init_exec_dir and uses argv[0] to init exec_dir. The saved value can be retrieved with qemu_get_exec_dir later. It will be reused by module loading. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-02-17Use error_is_set() only when necessaryMarkus Armbruster1-4/+4
error_is_set(&var) is the same as var != NULL, but it takes whole-program analysis to figure that out. Unnecessarily hard for optimizers, static checkers, and human readers. Dumb it down to obvious. Gets rid of several dozen Coverity false positives. Note that the obvious form is already used in many places. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 18:46:50 +0000