Commit 545d6809 authored Feb 07, 2012 by Tyler Hicks

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>

parent 4a26620d

fs/ecryptfs/inode.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}

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