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authorEric Sandeen <sandeen@redhat.com>2010-12-19 22:10:31 -0500
committerTheodore Ts'o <tytso@mit.edu>2010-12-19 22:10:31 -0500
commitaf0b44a1970fed1cda31d2969c99c46ffc515160 (patch)
treeb382d80df604c0bbd61836c13ae0b6f3020728e5 /fs/ext4
parentcad3f00763dcf9dfc62cbddf4bd714ab5a71a0eb (diff)
ext4: zero out nanosecond timestamps for small inodes
When nanosecond timestamp resolution isn't supported on an ext4 partition (inode size = 128), stat() appears to be returning uninitialized garbage in the nanosecond component of timestamps. EXT4_INODE_GET_XTIME should zero out tv_nsec when EXT4_FITS_IN_INODE evaluates to false. Reported-by: Jordan Russell <jr-list-2010@quo.to> Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/ext4.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 49f1ceaac57..8104ab7eb7d 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -693,6 +693,8 @@ do { \
if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime ## _extra)) \
ext4_decode_extra_time(&(inode)->xtime, \
raw_inode->xtime ## _extra); \
+ else \
+ (inode)->xtime.tv_nsec = 0; \
} while (0)
#define EXT4_EINODE_GET_XTIME(xtime, einode, raw_inode) \
@@ -703,6 +705,8 @@ do { \
if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime ## _extra)) \
ext4_decode_extra_time(&(einode)->xtime, \
raw_inode->xtime ## _extra); \
+ else \
+ (einode)->xtime.tv_nsec = 0; \
} while (0)
#define i_disk_version osd1.linux1.l_i_version