- 01 6月, 2012 3 次提交
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由 Salman Qazi 提交于
ext4_free_blocks fails to pair an ext4_mb_load_buddy with a matching ext4_mb_unload_buddy when it fails a memory allocation. Signed-off-by: NSalman Qazi <sqazi@google.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
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由 Theodore Ts'o 提交于
In commit 353eb83c we removed i_state_flags with 64-bit longs, But when handling the EXT4_IOC_SETFLAGS ioctl, we replace i_flags directly, which trashes the state flags which are stored in the high 32-bits of i_flags on 64-bit platforms. So use the the ext4_{set,clear}_inode_flags() functions which use atomic bit manipulation functions instead. Reported-by: NTao Ma <boyu.mt@taobao.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
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由 Tao Ma 提交于
In delayed allocation, i_reserved_data_blocks now indicates clusters, not blocks. So report it in the right number. This can be easily exposed by the following command: echo foo > blah; du -hc blah; sync; du -hc blah Reported-by: NEric Sandeen <sandeen@redhat.com> Signed-off-by: NTao Ma <boyu.mt@taobao.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 31 5月, 2012 2 次提交
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由 Theodore Ts'o 提交于
The ext4_error() function is missing a call to save_error_info(). Since this is the function which marks the file system as containing an error, this oversight (which was introduced in 2.6.36) is quite significant, and should be backported to older stable kernels with high urgency. Reported-by: NKen Sumrall <ksumrall@google.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu> Cc: ksumrall@google.com Cc: stable@kernel.org
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由 Theodore Ts'o 提交于
Make it easy to test whether or not the error handling subsystem in ext4 is working correctly. This allows us to simulate an ext4_error() by echoing a string to /sys/fs/ext4/<dev>/trigger_fs_error. Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu> Cc: ksumrall@google.com
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- 29 5月, 2012 11 次提交
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由 Tao Ma 提交于
Now when we set the group inode free count, we don't have a proper group lock so that multiple threads may decrease the inode free count at the same time. And e2fsck will complain something like: Free inodes count wrong for group #1 (1, counted=0). Fix? no Free inodes count wrong for group #2 (3, counted=0). Fix? no Directories count wrong for group #2 (780, counted=779). Fix? no Free inodes count wrong for group #3 (2272, counted=2273). Fix? no So this patch try to protect it with the ext4_lock_group. btw, it is found by xfstests test case 269 and the volume is mkfsed with the parameter "-O ^resize_inode,^uninit_bg,extent,meta_bg,flex_bg,ext_attr" and I have run it 100 times and the error in e2fsck doesn't show up again. Signed-off-by: NTao Ma <boyu.mt@taobao.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Zheng Liu 提交于
The generic_file_aio_write() function returns ssize_t, and ext4_file_write() returns a ssize_t, so use a ssize_t to collect the return value from generic_file_aio_write(). It shouldn't matter since the VFS read/write paths shouldn't allow a read greater than MAX_INT, but there was previously a bug in the AIO code paths, and it's best if we use a consistent type so that the return value from generic_file_aio_write() can't get truncated. Reported-by: NJouni Siren <jouni.siren@iki.fi> Reviewed-by: NJan Kara <jack@suse.cz> Signed-off-by: NZheng Liu <wenqing.lz@taobao.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Zheng Liu 提交于
fix ext_debug format flag in ext4_ext_binsearch_idx(). Signed-off-by: NZheng Liu <wenqing.lz@taobao.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Zheng Liu 提交于
remove 'len' variable in ext4_discard_allocated_blocks() because it is useless. Signed-off-by: NZheng Liu <wenqing.lz@taobao.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Theodore Ts'o 提交于
This is a port of the ext3 commit: 4569cd1bSigned-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Theodore Ts'o 提交于
The b_data field of the buffer_head is already a char *, so there's no point casting it to a char *. Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Andreas Dilger 提交于
A hard-linked directory to its parent can cause the VFS to deadlock, and is a sign of a corrupted file system. So detect this case in ext4_lookup(), before the rmdir() lockup scenario can take place. Signed-off-by: NAndreas Dilger <adilger@dilger.ca> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
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由 Haogang Chen 提交于
In alloc_flex_gd(), when flexbg_size is large, kmalloc size would overflow and flex_gd->groups would point to a buffer smaller than expected, causing OOB accesses when it is used. Note that in ext4_resize_fs(), flexbg_size is calculated using sbi->s_log_groups_per_flex, which is read from the disk and only bounded to [1, 31]. The patch returns NULL for too large flexbg_size. Reviewed-by: NEric Sandeen <sandeen@redhat.com> Signed-off-by: NHaogang Chen <haogangchen@gmail.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
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由 Akira Fujita 提交于
needs_recovery in ext4_mb_init() is not used, remove it. Signed-off-by: NAkira Fujita <a-fujita@rs.jp.ne.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Eric Sandeen 提交于
If ext4_setup_super() fails i.e. due to a too-high revision, the error is logged in dmesg but the fs is not mounted RO as indicated. Tested by: # mkfs.ext4 -r 4 /dev/sdb6 # mount /dev/sdb6 /mnt/test # dmesg | grep "too high" [164919.759248] EXT4-fs (sdb6): revision level too high, forcing read-only mode # grep sdb6 /proc/mounts /dev/sdb6 /mnt/test2 ext4 rw,seclabel,relatime,data=ordered 0 0 Reviewed-by: NAndreas Dilger <adilger@whamcloud.com> Signed-off-by: NEric Sandeen <sandeen@redhat.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
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由 Dan Carpenter 提交于
The ext4_get_group_desc() function returns NULL on error, and ext4_free_inodes_count() function dereferences it without checking. There is a check on the next line, but it's too late. Reviewed-by: NJan Kara <jack@suse.cz> Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
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- 27 5月, 2012 8 次提交
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由 Darrick J. Wong 提交于
Activate the metadata checksumming feature by adding it to ext4 and jbd2's lists of supported features. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Calculate and verify checksums of each data block being stored in the journal. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Calculate and verify the checksum of commit blocks. In checksum v2, deprecate most of the checksum v1 commit block checksum fields, since each block has its own checksum. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Calculate and verify a checksum of each descriptor block. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Compute and verify revoke blocks inside the journal. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Calculate and verify a checksum covering the journal superblock. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Obtain a reference to the crc32c driver if needed for the v2 checksum. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Add in the necessary code so that journal clients can enable the new journal checksumming features. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 23 5月, 2012 1 次提交
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由 Darrick J. Wong 提交于
Define flags and allocate space in on-disk journal structures to support checksumming of journal metadata. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 21 5月, 2012 1 次提交
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由 Theodore Ts'o 提交于
Previously we were only enabling the 64-bit jbd2 feature if the number of blocks in the file system was greater 2**32-1. The problem with this is that it makes it harder to test the 64-bit journal code paths with small file systems, since a small test file system would with the 64-bit ext4 feature enable would use a 64-bit file system on-disk data structures, but use a 32-bit journal. This would also cause problems when trying to do an online resize to grow the filesystem above the 2**32-1 boundary. Fortunately the patch to support online resize for 64-bit file systems hasn't been merged yet, so this problem hasn't arisen in practice. Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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- 30 4月, 2012 14 次提交
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由 Theodore Ts'o 提交于
None of this function callers ever pass in a NULL inode pointer, so this check is unnecessary, and the else clause is dead code. (This change should make the code coverage people a little happier. :-) Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Compute and verify a checksum for the MMP block. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
metadata_csum supersedes uninit_bg. Convert the ROCOMPAT uninit_bg flag check to a helper function that covers both, and make the checksum calculation algorithm use either crc16 or the metadata_csum chosen algorithm depending on which flag is set. Print a warning if we try to mount a filesystem with both feature flags set. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Calculate and verify the checksums of extended attribute blocks. This only applies to separate EA blocks that are pointed to by inode->i_file_acl (i.e. external EA blocks); the checksum lives in the EA header. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Calculate and verify the checksums for directory leaf blocks (i.e. blocks that only contain actual directory entries). The checksum lives in what looks to be an unused directory entry with a 0 name_len at the end of the block. This scheme is not used for internal htree nodes because the mechanism in place there only costs one dx_entry, whereas the "empty" directory entry would cost two dx_entries. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Calculate and verify the checksum for directory index tree (htree) node blocks. The checksum is stored in the last 4 bytes of the htree block and requires the dx_entry array to stop 1 dx_entry short of the end of the block. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Calculate and verify the checksum for each extent tree block. The checksum is located in the space immediately after the last possible ext4_extent in the block. The space is is typically the last 4-8 bytes in the block. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Compute and verify the checksum of the block bitmap; this checksum is stored in the block group descriptor. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Compute and verify the checksum of the inode bitmap; the checkum is stored in the block group descriptor. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
This patch introduces to ext4 the ability to calculate and verify inode checksums. This requires the use of a new ro compatibility flag and some accompanying e2fsprogs patches to provide the relevant features in tune2fs and e2fsck. The inode generation changes have been integrated into this patch. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Calculate and verify the superblock checksum. Since the UUID and block group number are embedded in each copy of the superblock, we need only checksum the entire block. Refactor some of the code to eliminate open-coding of the checksum update call. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Obtain a reference to the cryptoapi and crc32c if we mount a filesystem with metadata checksumming enabled. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Record the type of checksum algorithm we're using for metadata in the superblock, in case we ever want/need to change the algorithm. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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由 Darrick J. Wong 提交于
Define flags and change structure definitions to allow checksumming of ext4 metadata. Signed-off-by: NDarrick J. Wong <djwong@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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