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Tyler Hicks 081312e8c1 eCryptfs: Add getattr function

commit f8f484d1b6 upstream.

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>
Cc: Tim Gardner <timg@tpi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2010-02-23 07:37:58 -08:00

crypto.c

ecryptfs: use after free

2010-01-25 10:49:17 -08:00

debug.c

…

dentry.c

constify dentry_operations: ecryptfs

2009-03-27 14:44:01 -04:00

ecryptfs_kernel.h

const: mark remaining address_space_operations const

2009-09-22 07:17:24 -07:00