diff options
| -rw-r--r-- | fs/ntfs/ChangeLog | 5 | ||||
| -rw-r--r-- | fs/ntfs/super.c | 12 |
2 files changed, 13 insertions, 4 deletions
diff --git a/fs/ntfs/ChangeLog b/fs/ntfs/ChangeLog index 51428bfce95..8ff6ea778fb 100644 --- a/fs/ntfs/ChangeLog +++ b/fs/ntfs/ChangeLog @@ -105,6 +105,11 @@ ToDo/Notes: non-resident by a concurrent file write. - Remove checks for NULL before calling kfree() since kfree() does the checking itself. (Jesper Juhl) + - Some utilities modify the boot sector but do not update the checksum. + Thus, relax the checking in fs/ntfs/super.c::is_boot_sector_ntfs() to + only emit a warning when the checksum is incorrect rather than + refusing the mount. Thanks to Bernd Casimir for pointing this + problem out. 2.1.22 - Many bug and race fixes and error handling improvements. diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c index 25fa1d1668d..6f752ea765c 100644 --- a/fs/ntfs/super.c +++ b/fs/ntfs/super.c @@ -38,6 +38,7 @@ #include "debug.h" #include "index.h" #include "aops.h" +#include "layout.h" #include "malloc.h" #include "ntfs.h" @@ -532,16 +533,19 @@ static BOOL is_boot_sector_ntfs(const struct super_block *sb, { /* * Check that checksum == sum of u32 values from b to the checksum - * field. If checksum is zero, no checking is done. + * field. If checksum is zero, no checking is done. We will work when + * the checksum test fails, since some utilities update the boot sector + * ignoring the checksum which leaves the checksum out-of-date. We + * report a warning if this is the case. */ - if ((void*)b < (void*)&b->checksum && b->checksum) { + if ((void*)b < (void*)&b->checksum && b->checksum && !silent) { le32 *u; u32 i; for (i = 0, u = (le32*)b; u < (le32*)(&b->checksum); ++u) i += le32_to_cpup(u); if (le32_to_cpu(b->checksum) != i) - goto not_ntfs; + ntfs_warning(sb, "Invalid boot sector checksum."); } /* Check OEMidentifier is "NTFS " */ if (b->oem_id != magicNTFS) @@ -591,7 +595,7 @@ static BOOL is_boot_sector_ntfs(const struct super_block *sb, * many BIOSes will refuse to boot from a bootsector if the magic is * incorrect, so we emit a warning. */ - if (!silent && b->end_of_sector_marker != cpu_to_le16(0xaa55)) + if (!silent && b->end_of_sector_marker != const_cpu_to_le16(0xaa55)) ntfs_warning(sb, "Invalid end of sector marker."); return TRUE; not_ntfs: |