GitHub/LineageOS/android_kernel_motorola_exynos9610.git
11 years agofanotify: quit wanking with FASYNC in ->release()
Al Viro [Sun, 16 Jun 2013 15:08:36 +0000 (19:08 +0400)]
fanotify: quit wanking with FASYNC in ->release()

... especially since there's no way to get that sucker
on the list fsnotify_fasync() works with - the only thing
adding to it is fsnotify_fasync() itself and it's never
called for fanotify files while they are opened.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agocomedi: quit wanking with FASYNC in ->release()
Al Viro [Sun, 16 Jun 2013 15:05:07 +0000 (19:05 +0400)]
comedi: quit wanking with FASYNC in ->release()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agomore open-coded file_inode() calls
Al Viro [Sun, 16 Jun 2013 13:25:12 +0000 (17:25 +0400)]
more open-coded file_inode() calls

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agokill find_inode_number()
Al Viro [Sat, 15 Jun 2013 07:37:47 +0000 (11:37 +0400)]
kill find_inode_number()

the only remaining caller (in ncpfs) is guaranteed to return 0 -
we only hit it if we'd just checked that there's no dentry with
such name.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agocoda: don't bother with find_inode_number()
Al Viro [Wed, 19 Jun 2013 09:21:03 +0000 (13:21 +0400)]
coda: don't bother with find_inode_number()

the fallback it's using for dcache misses is actually the
same value we would've used for inumber anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoproc_fill_cache(): clean up, get rid of pointless find_inode_number() use
Al Viro [Sat, 15 Jun 2013 07:33:10 +0000 (11:33 +0400)]
proc_fill_cache(): clean up, get rid of pointless find_inode_number() use

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoproc_fill_cache(): just make instantiate_t return int
Al Viro [Sat, 15 Jun 2013 07:15:20 +0000 (11:15 +0400)]
proc_fill_cache(): just make instantiate_t return int

all instances always return ERR_PTR(-E...) or NULL, anyway

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoproc_pid_readdir(): stop wanking with proc_fill_cache() for /proc/self
Al Viro [Sat, 15 Jun 2013 06:45:10 +0000 (10:45 +0400)]
proc_pid_readdir(): stop wanking with proc_fill_cache() for /proc/self

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoproc_fill_cache(): kill pointless check
Al Viro [Sat, 15 Jun 2013 06:26:35 +0000 (10:26 +0400)]
proc_fill_cache(): kill pointless check

we'd just checked that child->d_inode is non-NULL, for fuck sake!

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoncpfs: don't bother with EBUSY on removal of busy directories
Al Viro [Sat, 15 Jun 2013 01:53:23 +0000 (05:53 +0400)]
ncpfs: don't bother with EBUSY on removal of busy directories

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agodon't call file_pos_write() if vfs_{read,write}{,v}() fails
Al Viro [Sat, 15 Jun 2013 01:49:36 +0000 (05:49 +0400)]
don't call file_pos_write() if vfs_{read,write}{,v}() fails

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoSELinux: Institute file_path_has_perm()
David Howells [Thu, 13 Jun 2013 22:37:55 +0000 (23:37 +0100)]
SELinux: Institute file_path_has_perm()

Create a file_path_has_perm() function that is like path_has_perm() but
instead takes a file struct that is the source of both the path and the
inode (rather than getting the inode from the dentry in the path).  This
is then used where appropriate.

This will be useful for situations like unionmount where it will be
possible to have an apparently-negative dentry (eg. a fallthrough) that is
open with the file struct pointing to an inode on the lower fs.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoReplace a bunch of file->dentry->d_inode refs with file_inode()
David Howells [Thu, 13 Jun 2013 22:37:49 +0000 (23:37 +0100)]
Replace a bunch of file->dentry->d_inode refs with file_inode()

Replace a bunch of file->dentry->d_inode refs with file_inode().

In __fput(), use file->f_inode instead so as not to be affected by any tricks
that file_inode() might grow.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoudf: provide ->tmpfile()
Al Viro [Wed, 12 Jun 2013 05:35:33 +0000 (09:35 +0400)]
udf: provide ->tmpfile()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoext3 ->tmpfile() support
Al Viro [Tue, 11 Jun 2013 08:52:02 +0000 (12:52 +0400)]
ext3 ->tmpfile() support

In this case we do need a bit more than usual, due to orphan
list handling.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoallow the temp files created by open() to be linked to
Al Viro [Tue, 11 Jun 2013 04:34:36 +0000 (08:34 +0400)]
allow the temp files created by open() to be linked to

O_TMPFILE | O_CREAT => linkat() with AT_SYMLINK_FOLLOW and /proc/self/fd/<n>
as oldpath (i.e. flink()) will create a link
O_TMPFILE | O_CREAT | O_EXCL => ENOENT on attempt to link those guys

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...
Al Viro [Fri, 7 Jun 2013 05:20:27 +0000 (01:20 -0400)]
[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoallow build_open_flags() to return an error
Al Viro [Tue, 11 Jun 2013 04:23:01 +0000 (08:23 +0400)]
allow build_open_flags() to return an error

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agolift file_*_write out of do_splice_direct()
Al Viro [Fri, 24 May 2013 00:10:34 +0000 (20:10 -0400)]
lift file_*_write out of do_splice_direct()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agolift file_*_write out of do_splice_from()
Al Viro [Fri, 24 May 2013 00:07:11 +0000 (20:07 -0400)]
lift file_*_write out of do_splice_from()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agodo_last(): fix missing checks for LAST_BIND case
Al Viro [Thu, 6 Jun 2013 13:12:33 +0000 (09:12 -0400)]
do_last(): fix missing checks for LAST_BIND case

/proc/self/cwd with O_CREAT should fail with EISDIR.  /proc/self/exe, OTOH,
should fail with ENOTDIR when opened with O_DIRECTORY.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agopcm_native: switch to fdget()/fdput()
Al Viro [Wed, 5 Jun 2013 18:09:55 +0000 (14:09 -0400)]
pcm_native: switch to fdget()/fdput()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] constify ->actor
Al Viro [Thu, 23 May 2013 02:22:04 +0000 (22:22 -0400)]
[readdir] constify ->actor

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] ->readdir() is gone
Al Viro [Thu, 23 May 2013 01:44:23 +0000 (21:44 -0400)]
[readdir] ->readdir() is gone

everything's converted to ->iterate()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert ecryptfs
Al Viro [Thu, 23 May 2013 01:23:40 +0000 (21:23 -0400)]
[readdir] convert ecryptfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert coda
Al Viro [Thu, 23 May 2013 01:15:30 +0000 (21:15 -0400)]
[readdir] convert coda

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert ocfs2
Al Viro [Thu, 23 May 2013 01:06:00 +0000 (21:06 -0400)]
[readdir] convert ocfs2

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert fatfs
Al Viro [Wed, 22 May 2013 22:37:16 +0000 (18:37 -0400)]
[readdir] convert fatfs

... pox upon the idiotic ioctls; life would be much easier without
those.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert xfs
Al Viro [Wed, 22 May 2013 21:07:56 +0000 (17:07 -0400)]
[readdir] convert xfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert btrfs
Al Viro [Wed, 22 May 2013 20:48:09 +0000 (16:48 -0400)]
[readdir] convert btrfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert hostfs
Al Viro [Wed, 22 May 2013 20:34:19 +0000 (16:34 -0400)]
[readdir] convert hostfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert afs
Al Viro [Wed, 22 May 2013 20:31:14 +0000 (16:31 -0400)]
[readdir] convert afs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert ncpfs
Al Viro [Wed, 22 May 2013 19:11:27 +0000 (15:11 -0400)]
[readdir] convert ncpfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert hfsplus
Al Viro [Wed, 22 May 2013 18:59:39 +0000 (14:59 -0400)]
[readdir] convert hfsplus

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert hfs
Al Viro [Wed, 22 May 2013 18:29:35 +0000 (14:29 -0400)]
[readdir] convert hfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert befs
Al Viro [Wed, 22 May 2013 17:44:05 +0000 (13:44 -0400)]
[readdir] convert befs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert cifs
Al Viro [Wed, 22 May 2013 20:17:25 +0000 (16:17 -0400)]
[readdir] convert cifs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert freevxfs
Al Viro [Sat, 18 May 2013 07:15:00 +0000 (03:15 -0400)]
[readdir] convert freevxfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert fuse
Al Viro [Sat, 18 May 2013 07:03:58 +0000 (03:03 -0400)]
[readdir] convert fuse

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert hpfs
Al Viro [Sat, 18 May 2013 06:58:57 +0000 (02:58 -0400)]
[readdir] convert hpfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoreiserfs: switch reiserfs_readdir_dentry to inode
Al Viro [Sat, 18 May 2013 02:58:58 +0000 (22:58 -0400)]
reiserfs: switch reiserfs_readdir_dentry to inode

... and clean the callers up a bit

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoreiserfs: is_privroot_deh() needs only directory inode, actually
Al Viro [Sat, 18 May 2013 02:45:29 +0000 (22:45 -0400)]
reiserfs: is_privroot_deh() needs only directory inode, actually

... and that - only to get the superblock.  Privroot is a directory
and we don't allow hardlinks to those...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert reiserfs
Al Viro [Sat, 18 May 2013 02:42:17 +0000 (22:42 -0400)]
[readdir] convert reiserfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert ntfs
Al Viro [Sat, 18 May 2013 01:22:31 +0000 (21:22 -0400)]
[readdir] convert ntfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert isofs
Al Viro [Sat, 18 May 2013 01:11:59 +0000 (21:11 -0400)]
[readdir] convert isofs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert jffs2
Al Viro [Fri, 17 May 2013 22:08:49 +0000 (18:08 -0400)]
[readdir] convert jffs2

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert f2fs
Al Viro [Fri, 17 May 2013 22:02:17 +0000 (18:02 -0400)]
[readdir] convert f2fs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert 9p
Al Viro [Fri, 17 May 2013 21:51:41 +0000 (17:51 -0400)]
[readdir] convert 9p

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert affs
Al Viro [Fri, 17 May 2013 21:44:42 +0000 (17:44 -0400)]
[readdir] convert affs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert adfs
Al Viro [Fri, 17 May 2013 21:30:10 +0000 (17:30 -0400)]
[readdir] convert adfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert logfs
Al Viro [Fri, 17 May 2013 21:06:34 +0000 (17:06 -0400)]
[readdir] convert logfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert jfs
Al Viro [Fri, 17 May 2013 21:00:34 +0000 (17:00 -0400)]
[readdir] convert jfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert ceph
Al Viro [Fri, 17 May 2013 20:52:26 +0000 (16:52 -0400)]
[readdir] convert ceph

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert nfs
Al Viro [Fri, 17 May 2013 20:34:50 +0000 (16:34 -0400)]
[readdir] convert nfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert ext4
Al Viro [Fri, 17 May 2013 20:08:53 +0000 (16:08 -0400)]
[readdir] convert ext4

and trim the living hell out bogosities in inline dir case

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert qnx6
Al Viro [Fri, 17 May 2013 19:32:10 +0000 (15:32 -0400)]
[readdir] convert qnx6

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert qnx4
Al Viro [Fri, 17 May 2013 19:17:59 +0000 (15:17 -0400)]
[readdir] convert qnx4

... and use strnlen() instead of strlen() - it's done on untrusted data,
after all.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert omfs
Al Viro [Fri, 17 May 2013 19:05:25 +0000 (15:05 -0400)]
[readdir] convert omfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert nilfs2
Al Viro [Thu, 16 May 2013 18:36:14 +0000 (14:36 -0400)]
[readdir] convert nilfs2

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert sysfs
Al Viro [Thu, 16 May 2013 18:31:02 +0000 (14:31 -0400)]
[readdir] convert sysfs

get rid of the kludges in sysfs_readdir()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert gfs2
Al Viro [Thu, 16 May 2013 18:14:48 +0000 (14:14 -0400)]
[readdir] convert gfs2

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert exofs
Al Viro [Thu, 16 May 2013 17:48:17 +0000 (13:48 -0400)]
[readdir] convert exofs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert bfs
Al Viro [Thu, 16 May 2013 17:41:48 +0000 (13:41 -0400)]
[readdir] convert bfs

... and get rid of that ridiculous mutex in bfs_readdir()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert procfs
Al Viro [Thu, 16 May 2013 16:07:31 +0000 (12:07 -0400)]
[readdir] convert procfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert openpromfs
Al Viro [Thu, 16 May 2013 05:52:12 +0000 (01:52 -0400)]
[readdir] convert openpromfs

what the hell is op_mutex for, BTW?

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert efs
Al Viro [Thu, 16 May 2013 05:41:10 +0000 (01:41 -0400)]
[readdir] convert efs

* sanity checks belong before risky operation, not after it
* don't quit as soon as we'd found an entry

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert configfs
Al Viro [Thu, 16 May 2013 05:28:34 +0000 (01:28 -0400)]
[readdir] convert configfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert romfs
Al Viro [Thu, 16 May 2013 05:22:00 +0000 (01:22 -0400)]
[readdir] convert romfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert squashfs
Al Viro [Thu, 16 May 2013 05:17:58 +0000 (01:17 -0400)]
[readdir] convert squashfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert ubifs
Al Viro [Thu, 16 May 2013 05:14:46 +0000 (01:14 -0400)]
[readdir] convert ubifs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert udf
Al Viro [Thu, 16 May 2013 05:09:37 +0000 (01:09 -0400)]
[readdir] convert udf

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] convert ext3
Al Viro [Thu, 16 May 2013 01:02:48 +0000 (21:02 -0400)]
[readdir] convert ext3

new helper: dir_relax(inode).  Call when you are in location that will
_not_ be invalidated by directory modifications (block boundary, in case
of ext*).  Returns whether the directory has survived (dropping i_mutex
allows rmdir to kill the sucker; if it returns false to us, ->iterate()
is obviously done)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] switch dcache_readdir() users to ->iterate()
Al Viro [Thu, 16 May 2013 00:23:06 +0000 (20:23 -0400)]
[readdir] switch dcache_readdir() users to ->iterate()

new helpers - dir_emit_dot(file, ctx, dentry), dir_emit_dotdot(file, ctx),
dir_emit_dots(file, ctx).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] simple local unixlike: switch to ->iterate()
Al Viro [Wed, 15 May 2013 22:51:49 +0000 (18:51 -0400)]
[readdir] simple local unixlike: switch to ->iterate()

ext2, ufs, minix, sysv

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] introduce ->iterate(), ctx->pos, dir_emit()
Al Viro [Wed, 15 May 2013 22:49:12 +0000 (18:49 -0400)]
[readdir] introduce ->iterate(), ctx->pos, dir_emit()

New method - ->iterate(file, ctx).  That's the replacement for ->readdir();
it takes callback from ctx->actor, uses ctx->pos instead of file->f_pos and
calls dir_emit(ctx, ...) instead of filldir(data, ...).  It does *not*
update file->f_pos (or look at it, for that matter); iterate_dir() does the
update.

Note that dir_emit() takes the offset from ctx->pos (and eventually
filldir_t will lose that argument).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years ago[readdir] introduce iterate_dir() and dir_context
Al Viro [Wed, 15 May 2013 17:52:59 +0000 (13:52 -0400)]
[readdir] introduce iterate_dir() and dir_context

iterate_dir(): new helper, replacing vfs_readdir().

struct dir_context: contains the readdir callback (and will get more stuff
in it), embedded into whatever data that callback wants to deal with;
eventually, we'll be passing it to ->readdir() replacement instead of
(data,filldir) pair.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agomove linux/loop.h to drivers/block
Al Viro [Sun, 12 May 2013 14:14:07 +0000 (10:14 -0400)]
move linux/loop.h to drivers/block

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agocompat.c: LOOP_CLR_FD is taken care of in loop.c itself...
Al Viro [Sun, 12 May 2013 14:12:11 +0000 (10:12 -0400)]
compat.c: LOOP_CLR_FD is taken care of in loop.c itself...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agopxa3xx: VM_IO is set by io_remap_pfn_range()
Al Viro [Sat, 11 May 2013 16:39:26 +0000 (12:39 -0400)]
pxa3xx: VM_IO is set by io_remap_pfn_range()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoau1100fb: VM_IO is set by io_remap_pfn_range()
Al Viro [Sat, 11 May 2013 16:38:38 +0000 (12:38 -0400)]
au1100fb: VM_IO is set by io_remap_pfn_range()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoau1200fb: io_remap_pfn_range() sets VM_IO
Al Viro [Sat, 11 May 2013 16:37:38 +0000 (12:37 -0400)]
au1200fb: io_remap_pfn_range() sets VM_IO

... and single return is quite sufficient to get out of function, TYVM

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agovfio: remap_pfn_range() sets all those flags...
Al Viro [Sat, 11 May 2013 16:33:31 +0000 (12:33 -0400)]
vfio: remap_pfn_range() sets all those flags...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoi810: VM_IO is set by io_remap_pfn_range()
Al Viro [Sat, 11 May 2013 16:27:16 +0000 (12:27 -0400)]
i810: VM_IO is set by io_remap_pfn_range()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agodrm: io_remap_pfn_range() sets VM_IO...
Al Viro [Sat, 11 May 2013 16:23:17 +0000 (12:23 -0400)]
drm: io_remap_pfn_range() sets VM_IO...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agosparc: __pci_mmap_set_flags() is useless
Al Viro [Sat, 11 May 2013 16:21:55 +0000 (12:21 -0400)]
sparc: __pci_mmap_set_flags() is useless

io_remap_pfn_range() does all we need

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agomn10300: don't bother with VM_IO
Al Viro [Sat, 11 May 2013 16:19:34 +0000 (12:19 -0400)]
mn10300: don't bother with VM_IO

io_remap_pfn_range() sets it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agohose_mmap_page_range(): io_remap_pfn_range() will set all those flags...
Al Viro [Sat, 11 May 2013 16:18:01 +0000 (12:18 -0400)]
hose_mmap_page_range(): io_remap_pfn_range() will set all those flags...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agosamsung: don't bother with setting VM_IO
Al Viro [Sat, 11 May 2013 16:15:47 +0000 (12:15 -0400)]
samsung: don't bother with setting VM_IO

io_remap_pfn_range() will set it just fine

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoconsolidate io_remap_pfn_range definitions
Al Viro [Sat, 11 May 2013 16:13:10 +0000 (12:13 -0400)]
consolidate io_remap_pfn_range definitions

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoUBIFS: fix a horrid bug
Artem Bityutskiy [Fri, 28 Jun 2013 11:15:15 +0000 (14:15 +0300)]
UBIFS: fix a horrid bug

Al Viro pointed me to the fact that '->readdir()' and '->llseek()' have no
mutual exclusion, which means the 'ubifs_dir_llseek()' can be run while we are
in the middle of 'ubifs_readdir()'.

This means that 'file->private_data' can be freed while 'ubifs_readdir()' uses
it, and this is a very bad bug: not only 'ubifs_readdir()' can return garbage,
but this may corrupt memory and lead to all kinds of problems like crashes an
security holes.

This patch fixes the problem by using the 'file->f_version' field, which
'->llseek()' always unconditionally sets to zero. We set it to 1 in
'ubifs_readdir()' and whenever we detect that it became 0, we know there was a
seek and it is time to clear the state saved in 'file->private_data'.

I tested this patch by writing a user-space program which runds readdir and
seek in parallell. I could easily crash the kernel without these patches, but
could not crash it with these patches.

Cc: stable@vger.kernel.org
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Tested-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoUBIFS: prepare to fix a horrid bug
Artem Bityutskiy [Fri, 28 Jun 2013 11:15:14 +0000 (14:15 +0300)]
UBIFS: prepare to fix a horrid bug

Al Viro pointed me to the fact that '->readdir()' and '->llseek()' have no
mutual exclusion, which means the 'ubifs_dir_llseek()' can be run while we are
in the middle of 'ubifs_readdir()'.

First of all, this means that 'file->private_data' can be freed while
'ubifs_readdir()' uses it.  But this particular patch does not fix the problem.
This patch is only a preparation, and the fix will follow next.

In this patch we make 'ubifs_readdir()' stop using 'file->f_pos' directly,
because 'file->f_pos' can be changed by '->llseek()' at any point. This may
lead 'ubifs_readdir()' to returning inconsistent data: directory entry names
may correspond to incorrect file positions.

So here we introduce a local variable 'pos', read 'file->f_pose' once at very
the beginning, and then stick to 'pos'. The result of this is that when
'ubifs_dir_llseek()' changes 'file->f_pos' while we are in the middle of
'ubifs_readdir()', the latter "wins".

Cc: stable@vger.kernel.org
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Tested-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agoaout32 coredump compat fix
Al Viro [Sat, 22 Jun 2013 07:01:38 +0000 (11:01 +0400)]
aout32 coredump compat fix

dump_seek() does SEEK_CUR, not SEEK_SET; native binfmt_aout
handles it correctly (seeks by PAGE_SIZE - sizeof(struct user),
getting the current position to PAGE_SIZE), compat one seeks
by PAGE_SIZE and ends up at PAGE_SIZE + already written...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agosplice: don't pass the address of ->f_pos to methods
Al Viro [Thu, 20 Jun 2013 14:58:36 +0000 (18:58 +0400)]
splice: don't pass the address of ->f_pos to methods

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agomconsole: we'd better initialize pos before passing it to vfs_read()...
Al Viro [Wed, 19 Jun 2013 08:35:42 +0000 (12:35 +0400)]
mconsole: we'd better initialize pos before passing it to vfs_read()...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
11 years agolseek(fd, n, SEEK_END) does *not* go to eof - n
Al Viro [Sun, 16 Jun 2013 17:06:06 +0000 (18:06 +0100)]
lseek(fd, n, SEEK_END) does *not* go to eof - n

When you copy some code, you are supposed to read it.  If nothing else,
there's a chance to spot and fix an obvious bug instead of sharing it...

X-Song: "I Got It From Agnes", by Tom Lehrer
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[ Tom Lehrer? You're dating yourself, Al ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoLinux 3.10-rc6
Linus Torvalds [Sat, 15 Jun 2013 21:51:07 +0000 (11:51 -1000)]
Linux 3.10-rc6

11 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sat, 15 Jun 2013 21:49:48 +0000 (11:49 -1000)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "These are a little later than I planned on since I got caught up with
  handling merges for 3.11 most of the week.

  Another week, another batch of fixes for arm-soc platforms.

  Again, nothing controversial.  A few more than would be ideal, but all
  are valid fixes.  In particular the prima2 panic patch is critical
  since it fixes a problem where multiplatform kernels panic on all but
  prima2 hardware."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: SAMSUNG: pm: Adjust for pinctrl- and DT-enabled platforms
  ARM: prima2: fix incorrect panic usage
  arm: mvebu: armada-xp-{gp,openblocks-ax3-4}: specify PCIe range
  ARM: Kirkwood: handle mv88f6282 cpu in __kirkwood_variant().
  ARM: omap3: clock: fix wrong container_of in clock36xx.c
  ARM: dts: OMAP5: Fix missing PWM capability to timer nodes
  ARM: dts: omap4-panda|sdp: Fix mux for twl6030 IRQ pin and msecure line
  ARM: dts: AM33xx: Fix properties on gpmc node
  arm: omap2: fix AM33xx hwmod infos for UART2
  ARM: OMAP3: Fix iva2_pwrdm settings for 3703

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 15 Jun 2013 21:47:56 +0000 (11:47 -1000)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix RTNL locking in batman-adv, from Matthias Schiffer.

 2) Don't allow non-passthrough macvlan devices to set NOPROMISC via
    netlink, otherwise we can end up with corrupted promisc counter
    values on the device.  From Michael S Tsirkin.

 3) Fix stmmac driver build with debugging defines enabled, from Dinh
    Nguyen.

 4) Make sure name string we give in socket address in AF_PACKET is NULL
    terminated, from Daniel Borkmann.

 5) Fix leaking of two uninitialized bytes of memory to userspace in
    l2tp, from Guillaume Nault.

 6) Clear IPCB(skb) before tunneling otherwise we touch dangling IP
    options state and crash.  From Saurabh Mohan.

 7) Fix suspend/resume for davinci_mdio by using suspend_late and
    resume_early.  From Mugunthan V N.

 8) Don't tag ip_tunnel_init_net and ip_tunnel_delete_net with
    __net_{init,exit}, they can be called outside of those contexts.
    From Eric Dumazet.

 9) Fix RX length error in sh_eth driver, from Yoshihiro Shimoda.

10) Fix missing sctp_outq initialization in some code paths of SCTP
    stack, from Neil Horman.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (21 commits)
  sctp: fully initialize sctp_outq in sctp_outq_init
  netiucv: Hold rtnl between name allocation and device registration.
  tulip: Properly check dma mapping result
  net: sh_eth: fix incorrect RX length error if R8A7740
  ip_tunnel: remove __net_init/exit from exported functions
  drivers: net: davinci_mdio: restore mdio clk divider in mdio resume
  drivers: net: davinci_mdio: moving mdio resume earlier than cpsw ethernet driver
  net/ipv4: ip_vti clear skb cb before tunneling.
  tg3: Wait for boot code to finish after power on
  l2tp: Fix sendmsg() return value
  l2tp: Fix PPP header erasure and memory leak
  bonding: fix igmp_retrans type and two related races
  bonding: reset master mac on first enslave failure
  packet: packet_getname_spkt: make sure string is always 0-terminated
  net: ethernet: stmicro: stmmac: Fix compile error when STMMAC_XMIT_DEBUG used
  be2net: Fix 32-bit DMA Mask handling
  xen-netback: don't de-reference vif pointer after having called xenvif_put()
  macvlan: don't touch promisc without passthrough
  batman-adv: Don't handle address updates when bla is disabled
  batman-adv: forward late OGMs from best next hop
  ...

11 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Sat, 15 Jun 2013 05:25:04 +0000 (19:25 -1000)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

Pull powerpc fixes from Benjamin Herrenschmidt:
 "So here are 3 fixes still for 3.10.  Fixes are simple, bugs are nasty
  (though not recent regressions, nasty enough) and all targeted at
  stable"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Fix missing/delayed calls to irq_work
  powerpc: Fix emulation of illegal instructions on PowerNV platform
  powerpc: Fix stack overflow crash in resume_kernel when ftracing

11 years agosmp.h: Use local_irq_{save,restore}() in !SMP version of on_each_cpu().
David Daney [Fri, 14 Jun 2013 18:13:59 +0000 (11:13 -0700)]
smp.h: Use local_irq_{save,restore}() in !SMP version of on_each_cpu().

Thanks to commit f91eb62f71b3 ("init: scream bloody murder if interrupts
are enabled too early"), "bloody murder" is now being screamed.

With a MIPS OCTEON config, we use on_each_cpu() in our
irq_chip.irq_bus_sync_unlock() function.  This gets called in early as a
result of the time_init() call.  Because the !SMP version of
on_each_cpu() unconditionally enables irqs, we get:

    WARNING: at init/main.c:560 start_kernel+0x250/0x410()
    Interrupts were enabled early
    CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.0-rc5-Cavium-Octeon+ #801
    Call Trace:
      show_stack+0x68/0x80
      warn_slowpath_common+0x78/0xb0
      warn_slowpath_fmt+0x38/0x48
      start_kernel+0x250/0x410

Suggested fix: Do what we already do in the SMP version of
on_each_cpu(), and use local_irq_save/local_irq_restore.  Because we
need a flags variable, make it a static inline to avoid name space
issues.

[ Change from v1: Convert on_each_cpu to a static inline function, add
  #include <linux/irqflags.h> to avoid build breakage on some files.

  on_each_cpu_mask() and on_each_cpu_cond() suffer the same problem as
  on_each_cpu(), but they are not causing !SMP bugs for me, so I will
  defer changing them to a less urgent patch. ]

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>