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eCryptfs: Copy up lower inode attrs after setting lower xattr 

After passing through a ->setxattr() call, eCryptfs needs to copy the
inode attributes from the lower inode to the eCryptfs inode, as they
may have changed in the lower filesystem's ->setxattr() path.

One example is if an extended attribute containing a POSIX Access
Control List is being set. The new ACL may cause the lower filesystem to
modify the mode of the lower inode and the eCryptfs inode would need to
be updated to reflect the new mode.

https://launchpad.net/bugs/926292

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Reported-by: Sebastien Bacher <seb128@ubuntu.com>
Cc: John Johansen <john.johansen@canonical.com>
Cc: <stable@vger.kernel.org>
This commit is contained in:
Tyler Hicks 2012-02-07 17:55:40 -06:00
parent 4a26620df4
commit 545d680938
1 changed files with 2 additions and 0 deletions
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2
fs/ecryptfs/inode.c
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@ -1085,6 +1085,8 @@ ecryptfs_setxattr(struct dentry *dentry, const char *name, const void *value,
}
rc = vfs_setxattr(lower_dentry, name, value, size, flags);
if (!rc)
fsstack_copy_attr_all(dentry->d_inode, lower_dentry->d_inode);
out:
return rc;
}