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linux-IllusionX/fs
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Eric W. Biederman ee992744ea proc: rewrite do_task_stat to correctly handle pid namespaces. 
Currently (as pointed out by Oleg) do_task_stat has a race when calling
task_pid_nr_ns with the task exiting.  In addition do_task_stat is not
currently displaying information in the context of the pid namespace that
mounted the /proc filesystem.  So "cut -d' ' -f 1 /proc/<pid>/stat" may not
equal <pid>.

This patch fixes the problem by converting to a single_open seq_file show
method.  Getting the pid namespace from the filesystem superblock instead of
current, and simply using the the struct pid from the inode instead of
attempting to get that same pid from the task.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08 09:22:23 -08:00
..
9p Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 2008-02-07 08:42:26 -08:00
adfs
affs iget: stop AFFS from using iget() and read_inode() 2008-02-07 08:42:27 -08:00
afs iget: use iget_failed() in AFS 2008-02-07 08:42:26 -08:00
autofs iget: stop autofs from using iget() and read_inode() 2008-02-07 08:42:27 -08:00
autofs4
befs iget: stop BEFS from using iget() and read_inode() 2008-02-07 08:42:27 -08:00
bfs iget: stop BFS from using iget() and read_inode() 2008-02-07 08:42:27 -08:00
cifs iget: stop CIFS from using iget() and read_inode() 2008-02-07 08:42:27 -08:00
coda
configfs
cramfs
debugfs
devpts
dlm
ecryptfs
efs iget: stop EFS from using iget() and read_inode() 2008-02-07 08:42:27 -08:00
exportfs
ext2 iget: stop EXT2 from using iget() and read_inode() 2008-02-07 08:42:27 -08:00
ext3 iget: stop EXT3 from using iget() and read_inode() 2008-02-07 08:42:27 -08:00
ext4 iget: stop EXT4 from using iget() and read_inode() 2008-02-07 08:42:27 -08:00
fat iget: stop FAT from using iget() and read_inode() 2008-02-07 08:42:28 -08:00
freevxfs iget: stop FreeVXFS from using iget() and read_inode() 2008-02-07 08:42:28 -08:00
fuse iget: stop FUSE from using iget() and read_inode() 2008-02-07 08:42:28 -08:00
gfs2 iget: use iget_failed() in GFS2 2008-02-07 08:42:27 -08:00
hfs
hfsplus iget: stop HFSPLUS from using iget() and read_inode() 2008-02-07 08:42:28 -08:00
hostfs iget: stop HOSTFS from using iget() and read_inode() 2008-02-07 08:42:29 -08:00
hpfs
hppfs iget: stop HPPFS from using iget() and read_inode() 2008-02-07 08:42:29 -08:00
hugetlbfs
isofs iget: stop ISOFS from using read_inode() 2008-02-07 08:42:28 -08:00
jbd
jbd2
jffs2 Merge git://git.infradead.org/mtd-2.6 2008-02-07 10:20:31 -08:00
jfs BKL-removal: Implement a compat_ioctl handler for JFS 2008-02-07 13:45:29 -06:00
lockd
minix iget: stop the MINIX filesystem from using iget() and read_inode() 2008-02-07 08:42:28 -08:00
msdos
ncpfs
nfs NFS: Fix a potential file corruption issue when writing 2008-02-07 19:20:20 -05:00
nfs_common
nfsd Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 2008-02-07 08:42:26 -08:00
nls
ntfs
ocfs2
openpromfs iget: stop OPENPROMFS from using iget() and read_inode() 2008-02-07 08:42:29 -08:00
partitions Block: Fix whole_disk attribute bug 2008-02-07 11:31:46 -08:00
proc proc: rewrite do_task_stat to correctly handle pid namespaces. 2008-02-08 09:22:23 -08:00
qnx4 iget: stop QNX4 from using iget() and read_inode() 2008-02-07 08:42:28 -08:00
ramfs
reiserfs Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 2008-02-07 08:42:26 -08:00
romfs iget: stop ROMFS from using iget() and read_inode() 2008-02-07 08:42:28 -08:00
smbfs
sysfs sysfs: remove BUG_ON() from sysfs_remove_group() 2008-02-07 11:31:46 -08:00
sysv iget: stop the SYSV filesystem from using iget() and read_inode() 2008-02-07 08:42:29 -08:00
udf
ufs iget: stop UFS from using iget() and read_inode() 2008-02-07 08:42:29 -08:00
vfat Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 2008-02-07 08:42:26 -08:00
xfs Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6 2008-02-07 19:12:12 -08:00
aio.c
anon_inodes.c
attr.c
bad_inode.c iget: introduce a function to register iget failure 2008-02-07 08:42:26 -08:00
binfmt_aout.c Sanitize the type of struct user.u_ar0 2008-02-07 08:42:30 -08:00
binfmt_elf.c
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio.c
block_dev.c
buffer.c
char_dev.c
compat.c
compat_binfmt_elf.c
compat_ioctl.c dm ioctl: move compat code 2008-02-08 02:09:56 +00:00
dcache.c
dcookies.c
direct-io.c
dnotify.c
dquot.c
drop_caches.c
eventfd.c
eventpoll.c
exec.c
fcntl.c
fifo.c
file.c
file_table.c
filesystems.c
fs-writeback.c
generic_acl.c
inode.c iget: remove iget() and the read_inode() super op as being obsolete 2008-02-07 08:42:29 -08:00
inotify.c
inotify_user.c inotify: fix check for one-shot watches before destroying them 2008-02-08 09:22:22 -08:00
internal.h
ioctl.c VFS: factor out three helpers for FIBMAP/FIONBIO/FIOASYNC file ioctls 2008-02-07 08:42:16 -08:00
ioprio.c
Kconfig SUNRPC xptrdma: simplify build configuration 2008-02-07 19:58:08 -05:00
Kconfig.binfmt
libfs.c
locks.c
Makefile
mbcache.c
mpage.c
namei.c
namespace.c
nfsctl.c
no-block.c
open.c
pipe.c
pnode.c
pnode.h
posix_acl.c
quota.c Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 2008-02-07 08:42:26 -08:00
quota_v1.c
quota_v2.c
read_write.c
read_write.h
readdir.c
select.c
seq_file.c
signalfd.c
splice.c
stack.c
stat.c
super.c
sync.c
timerfd.c
utimes.c
xattr.c
xattr_acl.c