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23 October 2021, 00:29:24 UTC
Revision 3aeb86ea4cd15f728147a3bd5469a205ada8c767 authored by Tyler Hicks on 15 March 2011, 19:54:00 UTC, committed by Tyler Hicks on 25 April 2011, 23:45:06 UTC 
eCryptfs: Handle failed metadata read in lookup
 
When failing to read the lower file's crypto metadata during a lookup,
eCryptfs must continue on without throwing an error. For example, there
may be a plaintext file in the lower mount point that the user wants to
delete through the eCryptfs mount.

If an error is encountered while reading the metadata in lookup(), the
eCryptfs inode's size could be incorrect. We must be sure to reread the
plaintext inode size from the metadata when performing an open() or
setattr(). The metadata is already being read in those paths, so this
adds minimal performance overhead.

This patch introduces a flag which will track whether or not the
plaintext inode size has been read so that an incorrect i_size can be
fixed in the open() or setattr() paths.

https://bugs.launchpad.net/bugs/509180

Cc: <stable@kernel.org>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
1 parent 332ab16
History
Tip revision: 3aeb86ea4cd15f728147a3bd5469a205ada8c767 authored by Tyler Hicks on 15 March 2011, 19:54:00 UTC
eCryptfs: Handle failed metadata read in lookup
Tip revision: 3aeb86e
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.gitignore -rw-r--r-- 941 bytes
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