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author | Tyler Hicks <tyhicks@linux.vnet.ibm.com> | 2009-11-04 11:48:01 +0300 |
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committer | Tyler Hicks <tyhicks@linux.vnet.ibm.com> | 2010-01-20 07:32:09 +0300 |
commit | f8f484d1b6677dd5cd5e7e605db747e8c30bbd47 (patch) | |
tree | 67acfc58f5e952e4fd2720d2e5e77409db40b6b8 /fs/read_write.c | |
parent | 5f3ef64f4da1c587cdcfaaac72311225b7df094c (diff) | |
download | linux-f8f484d1b6677dd5cd5e7e605db747e8c30bbd47.tar.xz |
eCryptfs: Add getattr function
The i_blocks field of an eCryptfs inode cannot be trusted, but
generic_fillattr() uses it to instantiate the blocks field of a stat()
syscall when a filesystem doesn't implement its own getattr(). Users
have noticed that the output of du is incorrect on newly created files.
This patch creates ecryptfs_getattr() which calls into the lower
filesystem's getattr() so that eCryptfs can use its kstat.blocks value
after calling generic_fillattr(). It is important to note that the
block count includes the eCryptfs metadata stored in the beginning of
the lower file plus any padding used to fill an extent before
encryption.
https://bugs.launchpad.net/ecryptfs/+bug/390833
Reported-by: Dominic Sacré <dominic.sacre@gmx.de>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Diffstat (limited to 'fs/read_write.c')
0 files changed, 0 insertions, 0 deletions