linux/fs/btrfs
Julia Lawall 2354d08fe9 Btrfs: use memdup_user helpers
Use memdup_user when user data is immediately copied into the
allocated region.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
position p;
identifier l1,l2;
@@

-  to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+  to = memdup_user(from,size);
   if (
-      to==NULL
+      IS_ERR(to)
                 || ...) {
   <+... when != goto l1;
-  -ENOMEM
+  PTR_ERR(to)
   ...+>
   }
-  if (copy_from_user(to, from, size) != 0) {
-    <+... when != goto l2;
-    -EFAULT
-    ...+>
-  }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-10-29 15:14:18 -04:00
..
acl.c
async-thread.c
async-thread.h
btrfs_inode.h
compat.h
compression.c
compression.h
ctree.c Btrfs: don't loop forever on bad btree blocks 2010-10-29 09:31:30 -04:00
ctree.h Merge branch 'bug-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work 2010-10-29 09:27:49 -04:00
delayed-ref.c
delayed-ref.h
dir-item.c
disk-io.c
disk-io.h
export.c
export.h
extent_io.c Btrfs: Switch the extent buffer rbtree into a radix tree 2010-10-29 11:25:45 -04:00
extent_io.h Btrfs: Switch the extent buffer rbtree into a radix tree 2010-10-29 11:25:45 -04:00
extent_map.c
extent_map.h
extent-tree.c Btrfs: use the flusher threads for delalloc throttling 2010-10-29 11:25:36 -04:00
file-item.c
file.c
free-space-cache.c Btrfs: Add a clear_cache mount option 2010-10-29 09:26:36 -04:00
free-space-cache.h Btrfs: load free space cache if it exists 2010-10-29 09:26:35 -04:00
hash.h
inode-item.c
inode-map.c
inode.c Merge branch 'bug-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work 2010-10-29 09:27:49 -04:00
ioctl.c Btrfs: use memdup_user helpers 2010-10-29 15:14:18 -04:00
ioctl.h
Kconfig
locking.c
locking.h
Makefile
ordered-data.c
ordered-data.h
orphan.c
print-tree.c
print-tree.h
ref-cache.c
ref-cache.h
relocation.c Merge branch 'bug-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work 2010-10-29 09:27:49 -04:00
root-tree.c
struct-funcs.c
super.c Merge branch 'bug-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work 2010-10-29 09:27:49 -04:00
sysfs.c
transaction.c Merge branch 'bug-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work 2010-10-29 09:27:49 -04:00
transaction.h
tree-defrag.c
tree-log.c
tree-log.h
version.h
version.sh
volumes.c Btrfs: fix raid code for removing missing drives 2010-10-29 11:25:46 -04:00
volumes.h
xattr.c
xattr.h
zlib.c