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Alain Knaff 5b6f1eb97d vfs: lseek(fd, 0, SEEK_CUR) race condition 
This patch fixes a race condition in lseek. While it is expected that
unpredictable behaviour may result while repositioning the offset of a
file descriptor concurrently with reading/writing to the same file
descriptor, this should not happen when merely *reading* the file
descriptor's offset.

Unfortunately, the only portable way in Unix to read a file
descriptor's offset is lseek(fd, 0, SEEK_CUR); however executing this
concurrently with read/write may mess up the position.

[with fixes from akpm]

Signed-off-by: Alain Knaff <alain@knaff.lu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-01-05 11:53:07 -05:00
..
9p
Merge branch 'next' into for-linus
2008-12-25 11:40:09 +11:00
adfs
vfs: Use const for kernel parser table
2008-10-13 10:10:37 -07:00
affs
CRED: Wrap task credential accesses in the AFFS filesystem
2008-11-14 10:38:45 +11:00
afs
fs: replace NIPQUAD()
2008-10-31 00:56:28 -07:00
autofs
CRED: Wrap task credential accesses in the autofs filesystem
2008-11-14 10:38:45 +11:00
autofs4
Merge branch 'master' into next
2008-11-14 11:29:12 +11:00
befs
befs: ensure fast symlinks are NUL-terminated
2008-12-31 18:07:40 -05:00
bfs
CRED: Wrap task credential accesses in the BFS filesystem
2008-11-14 10:38:47 +11:00
cifs
kill ->dir_notify()
2008-12-31 18:07:43 -05:00
coda
coda: fix creds reference
2008-11-20 08:11:52 +11:00
configfs
[PATCH] assorted path_lookup() -> kern_path() conversions
2008-10-23 05:12:52 -04:00
cramfs
cramfs: fix named-pipe handling
2008-08-20 15:40:32 -07:00
debugfs
integrity: special fs magic
2008-10-13 09:47:43 +11:00
devpts
CRED: Wrap task credential accesses in the devpts filesystem
2009-01-02 10:19:38 -08:00
dlm
fix warning in fs/dlm/netlink.c
2008-11-25 16:51:45 -08:00
ecryptfs
eCryptfs: check readlink result was not an error before using it
2008-12-31 18:07:38 -05:00
efs
[PATCH] switch all filesystems over to d_obtain_alias
2008-10-23 05:13:01 -04:00
exportfs
Merge branch 'next' into for-linus
2008-12-25 11:40:09 +11:00
ext2
nfsd race fixes: ext2
2008-12-31 18:07:43 -05:00
ext3
nfsd race fixes: ext3
2008-12-31 18:07:44 -05:00
ext4
nfsd race fixes: ext4
2008-12-31 18:07:44 -05:00
fat
Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6
2008-12-30 20:33:34 -08:00
freevxfs
freevxfs: ensure fast symlinks are NUL-terminated
2008-12-31 18:07:40 -05:00
fuse
CRED: Use RCU to access another task's creds and to release a task's own creds
2008-11-14 10:39:19 +11:00
gfs2
CRED: Wrap task credential accesses in the GFS2 filesystem
2008-11-14 10:38:53 +11:00
hfs
CRED: Wrap task credential accesses in the HFS filesystem
2008-11-14 10:38:54 +11:00
hfsplus
CRED: Wrap task credential accesses in the HFSplus filesystem
2008-11-14 10:38:54 +11:00
hostfs
hostfs: fix a duplicated global function name
2008-11-19 18:50:00 -08:00
hpfs
CRED: Wrap task credential accesses in the HPFS filesystem
2008-11-14 10:38:55 +11:00
hppfs
CRED: Use creds in file structs
2008-11-14 10:39:25 +11:00
hugetlbfs
CRED: Wrap current->cred and a few other accessors
2008-11-14 10:39:18 +11:00
isofs
[PATCH] switch all filesystems over to d_obtain_alias
2008-10-23 05:13:01 -04:00
jbd
jbd: don't give up looking for space so easily in __log_wait_for_space
2008-11-06 22:37:59 -05:00
jbd2
jbd2: don't give up looking for space so easily in __jbd2_log_wait_for_space
2008-11-06 22:38:07 -05:00
jffs2
Merge git://git.infradead.org/mtd-2.6
2008-11-06 15:43:13 -08:00
jfs
nfsd race fixes: jfs
2008-12-31 18:07:44 -05:00
lockd
Merge branch 'devel' into next
2008-12-30 16:51:43 -05:00
minix
CRED: Wrap task credential accesses in the Minix filesystem
2008-11-14 10:38:57 +11:00
ncpfs
CRED: Wrap task credential accesses in the NCPFS filesystem
2008-11-14 10:38:58 +11:00
nfs
Merge branch 'devel' into next
2008-12-30 16:51:43 -05:00
nfs_common
SUNRPC: nfsacl_encode/nfsacl_decode should be exported as GPL-only
2008-12-23 15:21:32 -05:00
nfsd
Merge branch 'devel' into next
2008-12-30 16:51:43 -05:00
nls
remove CONFIG_KMOD from fs
2008-10-17 02:38:36 +11:00
notify
filesystem notification: create fs/notify to contain all fs notification
2008-12-31 18:07:43 -05:00
ntfs
ntfs: don't fool kernel-doc
2008-12-01 19:55:25 -08:00
ocfs2
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
2008-12-28 12:49:40 -08:00
omfs
CRED: Wrap task credential accesses in the OMFS filesystem
2008-11-14 10:38:59 +11:00
openpromfs
[PATCH] fix ->llseek for more directories
2008-10-23 05:13:21 -04:00
partitions
block/md: fix md autodetection
2008-11-18 15:08:56 +01:00
proc
Merge branch 'irq-fixes-for-linus-4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2008-12-31 09:00:59 -08:00
qnx4
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
ramfs
CRED: Wrap task credential accesses in the RAMFS filesystem
2008-11-14 10:39:00 +11:00
reiserfs
nfsd race fixes: reiserfs
2008-12-31 18:07:44 -05:00
romfs
romfs_readpage: don't report errors for pages beyond i_size
2008-07-30 14:30:34 -07:00
smbfs
CRED: Wrap current->cred and a few other accessors
2008-11-14 10:39:18 +11:00
sysfs
[PATCH] fix ->llseek for more directories
2008-10-23 05:13:21 -04:00
sysv
sysv: ensure fast symlinks are NUL-terminated
2008-12-31 18:07:39 -05:00
ubifs
Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
2009-01-02 15:57:47 -08:00
udf
Merge branch 'master' into next
2008-12-04 17:16:36 +11:00
ufs
CRED: Wrap task credential accesses in the UFS filesystem
2008-11-14 10:39:04 +11:00
xfs
[XFS] Fix merge failures
2008-12-29 16:47:18 +11:00
aio.c
aio: make the lookup_ioctx() lockless
2008-12-29 08:29:50 +01:00
anon_inodes.c
anon_inodes: use fops->owner for module refcount
2008-12-31 16:55:44 +02:00
attr.c
CRED: Wrap task credential accesses in the filesystem subsystem
2008-11-14 10:39:05 +11:00
bad_inode.c
kill ->dir_notify()
2008-12-31 18:07:43 -05:00
binfmt_aout.c
sanitize ifdefs in binfmt_aout
2009-01-03 11:45:54 -08:00
binfmt_elf_fdpic.c
CRED: Make execve() take advantage of copy-on-write credentials
2008-11-14 10:39:24 +11:00
binfmt_elf.c
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
2008-12-28 12:33:21 -08:00
binfmt_em86.c
Allow recursion in binfmt_script and binfmt_misc
2008-10-16 11:21:38 -07:00
binfmt_flat.c
CRED: Make execve() take advantage of copy-on-write credentials
2008-11-14 10:39:24 +11:00
binfmt_misc.c
Allow recursion in binfmt_script and binfmt_misc
2008-10-16 11:21:38 -07:00
binfmt_script.c
Allow recursion in binfmt_script and binfmt_misc
2008-10-16 11:21:38 -07:00
binfmt_som.c
CRED: Make execve() take advantage of copy-on-write credentials
2008-11-14 10:39:24 +11:00
bio-integrity.c
bio: allow individual slabs in the bio_set
2008-12-29 08:29:23 +01:00
bio.c
bio: get rid of bio_vec clearing
2008-12-29 08:29:53 +01:00
block_dev.c
fs/block_dev.c: __read_mostly improvement and sb_is_blkdev_sb utilization
2008-12-31 18:07:43 -05:00
buffer.c
block: Supress Buffer I/O errors when SCSI REQ_QUIET flag set
2008-12-29 08:28:44 +01:00
char_dev.c
[PATCH] tidy up chrdev_open
2008-10-23 05:12:59 -04:00
compat_binfmt_elf.c
…
compat_ioctl.c
remove unused #include <linux/dirent.h>'s
2008-07-25 10:53:34 -07:00
compat.c
CRED: Make execve() take advantage of copy-on-write credentials
2008-11-14 10:39:24 +11:00
dcache.c
filp_cachep can be static in fs/file_table.c
2008-12-31 18:07:42 -05:00
dcookies.c
shrink struct dentry
2008-12-31 18:07:38 -05:00
direct-io.c
Remove Andrew Morton's old email accounts
2008-10-16 11:21:32 -07:00
dquot.c
CRED: Wrap task credential accesses in the filesystem subsystem
2008-11-14 10:39:05 +11:00
drop_caches.c
…
eventfd.c
flag parameters: check magic constants
2008-07-24 10:47:29 -07:00
eventpoll.c
epoll: introduce resource usage limits
2008-12-01 19:55:24 -08:00
exec.c
get rid of special-casing the /sbin/loader on alpha
2009-01-03 11:45:54 -08:00
fcntl.c
Merge branch 'next' into for-linus
2008-12-25 11:40:09 +11:00
fifo.c
[PATCH] introduce fmode_t, do annotations
2008-10-21 07:47:06 -04:00
file_table.c
filp_cachep can be static in fs/file_table.c
2008-12-31 18:07:42 -05:00
file.c
[PATCH] merge locate_fd() and get_unused_fd()
2008-08-01 11:25:23 -04:00
filesystems.c
proc: move /proc/filesystems to fs/filesystems.c
2008-10-23 14:27:09 +04:00
fs-writeback.c
Remove Andrew Morton's old email accounts
2008-10-16 11:21:32 -07:00
generic_acl.c
…
inode.c
nfsd/create race fixes, infrastructure
2008-12-31 18:07:43 -05:00
internal.h
CRED: Make execve() take advantage of copy-on-write credentials
2008-11-14 10:39:24 +11:00
ioctl.c
Fix a race condition in FASYNC handling
2008-12-05 15:35:10 -08:00
ioprio.c
CRED: Use RCU to access another task's creds and to release a task's own creds
2008-11-14 10:39:19 +11:00
Kconfig
filesystem notification: create fs/notify to contain all fs notification
2008-12-31 18:07:43 -05:00
Kconfig.binfmt
add CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS
2008-10-20 08:52:39 -07:00
libfs.c
fs: remove prepare_write/commit_write
2008-10-30 11:38:45 -07:00
locks.c
CRED: Wrap task credential accesses in the filesystem subsystem
2008-11-14 10:39:05 +11:00
Makefile
filesystem notification: create fs/notify to contain all fs notification
2008-12-31 18:07:43 -05:00
mbcache.c
…
mpage.c
Remove Andrew Morton's old email accounts
2008-10-16 11:21:32 -07:00
namei.c
make INIT_FS use the __RW_LOCK_UNLOCKED initialization
2008-12-31 18:07:42 -05:00
namespace.c
fs/namespace.c: drop code after return
2008-12-31 18:07:38 -05:00
nfsctl.c
pass a struct path * to may_open
2008-12-31 18:07:41 -05:00
no-block.c
…
open.c
introduce new LSM hooks where vfsmount is available.
2008-12-31 18:07:37 -05:00
pipe.c
CRED: Wrap task credential accesses in the filesystem subsystem
2008-11-14 10:39:05 +11:00
pnode.c
…
pnode.h
…
posix_acl.c
CRED: Wrap task credential accesses in the filesystem subsystem
2008-11-14 10:39:05 +11:00
quota_v1.c
quota: move function-macros from quota.h to quotaops.h
2008-07-25 10:53:35 -07:00
quota_v2.c
quota: move function-macros from quota.h to quotaops.h
2008-07-25 10:53:35 -07:00
quota.c
CRED: Wrap task credential accesses in the filesystem subsystem
2008-11-14 10:39:05 +11:00
read_write.c
vfs: lseek(fd, 0, SEEK_CUR) race condition
2009-01-05 11:53:07 -05:00
read_write.h
…
readdir.c
[PATCH] prepare vfs_readdir() callers to returning filldir result
2008-10-23 05:13:10 -04:00
select.c
select: deal with math overflow from borderline valid userland data
2008-10-26 11:22:08 -07:00
seq_file.c
Merge branch 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-01-03 12:04:39 -08:00
signalfd.c
flag parameters: check magic constants
2008-07-24 10:47:29 -07:00
splice.c
fs: remove prepare_write/commit_write
2008-10-30 11:38:45 -07:00
stack.c
…
stat.c
[PATCH] sanitize __user_walk_fd() et.al.
2008-07-26 20:53:34 -04:00
super.c
security: pass mount flags to security_sb_kern_mount()
2008-12-20 09:02:39 +11:00
sync.c
SYNC_FILE_RANGE_WRITE may and will block. Document that.
2008-07-24 10:47:17 -07:00
timerfd.c
hrtimer: convert timerfd to the new hrtimer apis
2008-09-05 21:35:09 -07:00
utimes.c
[PATCH] sanitize __user_walk_fd() et.al.
2008-07-26 20:53:34 -04:00
xattr_acl.c
…
xattr.c
[PATCH] sanitize __user_walk_fd() et.al.
2008-07-26 20:53:34 -04:00