Al Viro bd9b51e79c make default ->i_fop have ->open() fail with ENXIO ... As it is, default ->i_fop has NULL ->open() (along with all other methods). The only case where it matters is reopening (via procfs symlink) a file that didn't get its ->f_op from ->i_fop - anything else will have ->i_fop assigned to something sane (default would fail on read/write/ioctl/etc.). Unfortunately, such case exists - alloc_file() users, especially anon_get_file() ones. There we have tons of opened files of very different kinds sharing the same inode. As the result, attempt to reopen those via procfs succeeds and you get a descriptor you can't do anything with. Moreover, in case of sockets we set ->i_fop that will only be used on such reopen attempts - and put a failing ->open() into it to make sure those do not succeed. It would be simpler to put such ->open() into default ->i_fop and leave it unchanged both for anon inode (as we do anyway) and for socket ones. Result: * everything going through do_dentry_open() works as it used to * sock_no_open() kludge is gone * attempts to reopen anon-inode files fail as they really ought to * ditto for aio_private_file() * ditto for perfmon - this one actually tried to imitate sock_no_open() trick, but failed to set ->i_fop, so in the current tree reopens succeed and yield completely useless descriptor. Intent clearly had been to fail with -ENXIO on such reopens; now it actually does. * everything else that used alloc_file() keeps working - it has ->i_fop set for its inodes anyway Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>		2014-12-10 21:32:15 -05:00
..
9p	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
adfs	adfs: add __printf verification, fix format/argument mismatches	2014-08-08 15:57:24 -07:00
affs	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
afs	afs_fsync: don't bother with ->f_path.dentry	2014-11-19 13:01:22 -05:00
autofs4	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
befs	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
bfs	fs/bfs: use bfs prefix for dump_imap	2014-08-08 15:57:24 -07:00
btrfs	Merge branch 'iov_iter' into for-next	2014-12-08 20:39:29 -05:00
cachefiles	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
ceph	Merge branch 'iov_iter' into for-next	2014-12-08 20:39:29 -05:00
cifs	kill f_dentry uses	2014-11-19 13:01:25 -05:00
coda	move d_rcu from overlapping d_child to overlapping d_alias	2014-11-03 15:20:29 -05:00
configfs	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
cramfs	fs/cramfs/inode.c: use linux/uaccess.h	2014-08-08 15:57:25 -07:00
debugfs	Merge tag 'trace-seq-file-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into for-next	2014-11-19 13:02:53 -05:00
devpts
dlm	dlm: Use seq_puts() instead of seq_printf() for constant strings	2014-11-05 14:13:09 -05:00
ecryptfs	kill f_dentry uses	2014-11-19 13:01:25 -05:00
efivarfs	kill f_dentry uses	2014-11-19 13:01:25 -05:00
efs	fs/efs/namei.c: return is not a function	2014-08-08 15:57:18 -07:00
exofs	Boaz Harrosh - Fix broken email address	2014-10-19 20:22:32 +03:00
exportfs	move d_rcu from overlapping d_child to overlapping d_alias	2014-11-03 15:20:29 -05:00
ext2	percpu_counter: add @gfp to percpu_counter_init()	2014-09-08 09:51:29 +09:00
ext3	ext3: Don't check quota format when there are no quota files	2014-10-22 09:02:48 +02:00
ext4	ext4: make ext4_ext_convert_to_initialized() return proper number of blocks	2014-10-30 10:53:17 -04:00
f2fs	f2fs: support volatile operations for transient data	2014-10-07 11:54:41 -07:00
fat	vfs: make first argument of dir_context.actor typed	2014-10-31 17:48:54 -04:00
freevxfs
fscache	fs/fscache/object-list.c: use __seq_open_private()	2014-10-13 17:52:21 +01:00
fuse	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
gfs2	Merge branch 'for-gfs2' into for-next	2014-11-19 13:00:57 -05:00
hfs	fs/hfs/hfs_fs.h: remove redundant sys_tz declaration	2014-10-14 02:18:20 +02:00
hfsplus
hostfs	hostfs: support rename flags	2014-08-07 14:40:09 -04:00
hpfs	fs/hpfs/dnode.c: fix suspect code indent	2014-08-08 15:57:22 -07:00
hppfs	vfs: make first argument of dir_context.actor typed	2014-10-31 17:48:54 -04:00
hugetlbfs
isofs	isofs: avoid unused function warning	2014-11-19 13:09:37 -05:00
jbd	fs, jbd: use a more generic hash function	2014-10-22 10:02:04 +02:00
jbd2	jbd2: use a better hash function for the revoke table	2014-10-30 10:53:17 -04:00
jffs2	[jffs2] kill wbuf_queued/wbuf_dwork_lock	2014-10-09 02:39:01 -04:00
jfs	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
kernfs	switch d_materialise_unique() users to d_splice_alias()	2014-11-19 13:01:20 -05:00
lockd	lockd: get rid of ->f_path.dentry->d_sb	2014-11-19 13:01:24 -05:00
logfs	fs/logfs/readwrite.c: kernel-doc warning fixes	2014-08-06 18:01:12 -07:00
minix	minix zmap block counts calculation fix	2014-08-08 15:57:20 -07:00
ncpfs	ncpfs: use file_inode()	2014-11-19 13:01:25 -05:00
nfs	Merge branch 'iov_iter' into for-next	2014-12-08 20:39:29 -05:00
nfs_common	lockd: move lockd's grace period handling into its own module	2014-09-17 16:33:11 -04:00
nfsd	Merge branch 'iov_iter' into for-next	2014-12-08 20:39:29 -05:00
nilfs2	nilfs2: improve the performance of fdatasync()	2014-10-14 02:18:20 +02:00
nls
notify	Merge branch 'iov_iter' into for-next	2014-12-08 20:39:29 -05:00
ntfs	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
ocfs2	Merge branch 'iov_iter' into for-next	2014-12-08 20:39:29 -05:00
omfs	FS/OMFS: block number sanity check during fill_super operation	2014-10-14 02:18:22 +02:00
openpromfs
overlayfs	Merge branch 'iov_iter' into for-next	2014-12-08 20:39:29 -05:00
proc	Merge branch 'nsfs' into for-next	2014-12-10 21:31:59 -05:00
pstore	pstore: Fix duplicate {console,ftrace}-efi entries	2014-10-15 13:51:33 -07:00
qnx4
qnx6	fs/qnx6: update debugging to current functions	2014-08-08 15:57:26 -07:00
quota	quota: Properly return errors from dquot_writeback_dquots()	2014-10-22 09:08:03 +02:00
ramfs	fs/ramfs/file-nommu.c: replace count*size kzalloc by kcalloc	2014-08-08 15:57:18 -07:00
reiserfs	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
romfs	fs/romfs/super.c: add blank line after declarations	2014-08-08 15:57:25 -07:00
squashfs	fs/squashfs/super.c: logging cleanup	2014-08-06 18:01:13 -07:00
sysfs
sysv
ubifs	UBIFS: Fix trivial typo in power_cut_emulated()	2014-09-30 09:29:44 +03:00
udf	udf: Fix loading of special inodes	2014-10-09 13:06:14 +02:00
ufs	fs/ufs/balloc.c: remove unused variable	2014-10-14 02:18:20 +02:00
xfs	xfs: track bulkstat progress by agino	2014-11-07 08:33:52 +11:00
aio.c	percpu_ref: add PERCPU_REF_INIT_* flags	2014-09-24 13:31:50 -04:00
anon_inodes.c
attr.c
bad_inode.c	bad_inode: add ->rename2()	2014-08-07 14:40:09 -04:00
binfmt_aout.c	assorted conversions to %p[dD]	2014-11-19 13:01:20 -05:00
binfmt_elf_fdpic.c	handle suicide on late failure exits in execve() in search_binary_handler()	2014-10-09 02:39:00 -04:00
binfmt_elf.c	handle suicide on late failure exits in execve() in search_binary_handler()	2014-10-09 02:39:00 -04:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c	binfmt_misc: work around gcc-4.9 warning	2014-10-14 02:18:16 +02:00
binfmt_script.c
binfmt_som.c
block_dev.c	Return short read or 0 at end of a raw device, not EIO	2014-10-31 06:33:26 -04:00
buffer.c	fs: clarify rate limit suppressed buffer I/O errors	2014-10-21 13:55:11 -06:00
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c
compat.c	vfs: make first argument of dir_context.actor typed	2014-10-31 17:48:54 -04:00
coredump.c	coredump: add %i/%I in core_pattern to report the tid of the crashed thread	2014-10-14 02:18:21 +02:00
dcache.c	Merge branch 'iov_iter' into for-next	2014-12-08 20:39:29 -05:00
dcookies.c
direct-io.c	fuse: honour max_read and max_write in direct_io mode	2014-09-26 21:16:51 -04:00
drop_caches.c
eventfd.c	fs: Convert show_fdinfo functions to void	2014-11-05 14:13:23 -05:00
eventpoll.c	fs: Convert show_fdinfo functions to void	2014-11-05 14:13:23 -05:00
exec.c	handle suicide on late failure exits in execve() in search_binary_handler()	2014-10-09 02:39:00 -04:00
fcntl.c	security: make security_file_set_fowner, f_setown and __f_setown void return	2014-09-09 16:01:36 -04:00
fhandle.c
file_table.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-10-13 11:28:42 +02:00
file.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 15:44:12 +02:00
filesystems.c
fs_pin.c	make fs/{namespace,super}.c forget about acct.h	2014-08-07 14:40:09 -04:00
fs_struct.c
fs-writeback.c
inode.c	make default ->i_fop have ->open() fail with ENXIO	2014-12-10 21:32:15 -05:00
internal.h	take the targets of /proc/*/ns/* symlinks to separate fs	2014-12-10 21:30:20 -05:00
ioctl.c
Kconfig	overlay filesystem	2014-10-24 00:14:38 +02:00
Kconfig.binfmt
libfs.c	move d_rcu from overlapping d_child to overlapping d_alias	2014-11-03 15:20:29 -05:00
locks.c	locks: flock_make_lock should return a struct file_lock (or PTR_ERR)	2014-10-07 14:06:13 -04:00
Makefile	Merge branch 'nsfs' into for-next	2014-12-10 21:31:59 -05:00
mbcache.c
mount.h	common object embedded into various struct ....ns	2014-12-04 14:31:00 -05:00
mpage.c	vfs: guard end of device for mpage interface	2014-10-09 22:25:53 -04:00
namei.c	make nameidata completely opaque outside of fs/namei.c	2014-12-10 21:32:13 -05:00
namespace.c	take the targets of /proc/*/ns/* symlinks to separate fs	2014-12-10 21:30:20 -05:00
no-block.c
nsfs.c	take the targets of /proc/*/ns/* symlinks to separate fs	2014-12-10 21:30:20 -05:00
open.c	new helper: audit_file()	2014-11-19 13:01:26 -05:00
pipe.c
pnode.c	get rid of propagate_umount() mistakenly treating slaves as busy.	2014-08-30 18:31:41 -04:00
pnode.h
posix_acl.c
proc_namespace.c	namespaces: Use task_lock and not rcu to protect nsproxy	2014-07-29 18:08:50 -07:00
read_write.c	cachefiles_write_page(): switch to __kernel_write()	2014-10-09 02:39:05 -04:00
readdir.c	vfs: make first argument of dir_context.actor typed	2014-10-31 17:48:54 -04:00
select.c
seq_file.c	seq_file: Rename seq_overflow() to seq_has_overflowed() and make public	2014-10-29 20:26:06 -04:00
signalfd.c	fs: Convert show_fdinfo functions to void	2014-11-05 14:13:23 -05:00
splice.c	vfs: export do_splice_direct() to modules	2014-10-24 00:14:35 +02:00
stack.c	fs: fix comment for 'CONFIG_LBADF'	2014-08-26 09:35:56 +02:00
stat.c
statfs.c
super.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-10-13 11:28:42 +02:00
sync.c	kill f_dentry uses	2014-11-19 13:01:25 -05:00
timerfd.c	fs: Convert show_fdinfo functions to void	2014-11-05 14:13:23 -05:00
utimes.c
xattr.c	new helper: audit_file()	2014-11-19 13:01:26 -05:00