linux-stable.git/fs/fcntl.c, branch linux-3.7.y

Fix F_DUPFD_CLOEXEC breakage

2012-10-09T06:52:31+00:00

Fix a braino in F_DUPFD_CLOEXEC; f_dupfd() expects flags for alloc_fd(),
get_unused_fd() etc and there clone-on-exec if O_CLOEXEC, not
FD_CLOEXEC.

Reported-by: Richard W.M. Jones 
Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

fcntl: fix misannotations

2012-09-27T02:20:20+00:00

__user * != * __user...

Signed-off-by: Al Viro

switch simple cases of fget_light to fdget

2012-09-27T02:20:08+00:00

Signed-off-by: Al Viro

take purely descriptor-related stuff from fcntl.c to file.c

2012-09-27T01:09:57+00:00

Signed-off-by: Al Viro

take rlimit check to callers of expand_files()

2012-09-27T01:08:53+00:00

... except for one in android, where the check is different
and already done in caller.  No need to recalculate rlimit
many times in alloc_fd() either.

Signed-off-by: Al Viro

c/r: fcntl: add F_GETOWNER_UIDS option

2012-07-31T00:25:21+00:00

When we restore file descriptors we would like them to look exactly as
they were at dumping time.

With help of fcntl it's almost possible, the missing snippet is file
owners UIDs.

To be able to read their values the F_GETOWNER_UIDS is introduced.

This option is valid iif CONFIG_CHECKPOINT_RESTORE is turned on, otherwise
returning -EINVAL.

Signed-off-by: Cyrill Gorcunov 
Acked-by: "Eric W. Biederman" 
Cc: "Serge E. Hallyn" 
Cc: Oleg Nesterov 
Cc: Pavel Emelyanov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

switch fcntl to fget_raw_light/fput_light

2012-05-30T03:28:30+00:00

Signed-off-by: Al Viro

userns: Use uid_eq gid_eq helpers when comparing kuids and kgids in the vfs

2012-05-03T10:29:34+00:00

Acked-by: Serge Hallyn 
Signed-off-by: Eric W. Biederman

Wrap accesses to the fd_sets in struct fdtable

2012-02-19T18:30:52+00:00

Wrap accesses to the fd_sets in struct fdtable (for recording open files and
close-on-exec flags) so that we can move away from using fd_sets since we
abuse the fd_set structs by not allocating the full-sized structure under
normal circumstances and by non-core code looking at the internals of the
fd_sets.

The first abuse means that use of FD_ZERO() on these fd_sets is not permitted,
since that cannot be told about their abnormal lengths.

This introduces six wrapper functions for setting, clearing and testing
close-on-exec flags and fd-is-open flags:

	void __set_close_on_exec(int fd, struct fdtable *fdt);
	void __clear_close_on_exec(int fd, struct fdtable *fdt);
	bool close_on_exec(int fd, const struct fdtable *fdt);
	void __set_open_fd(int fd, struct fdtable *fdt);
	void __clear_open_fd(int fd, struct fdtable *fdt);
	bool fd_is_open(int fd, const struct fdtable *fdt);

Note that I've prepended '__' to the names of the set/clear functions because
they require the caller to hold a lock to use them.

Note also that I haven't added wrappers for looking behind the scenes at the
the array.  Possibly that should exist too.

Signed-off-by: David Howells 
Link: http://lkml.kernel.org/r/20120216174942.23314.1364.stgit@warthog.procyon.org.uk
Signed-off-by: H. Peter Anvin 
Cc: Al Viro

userns: rename is_owner_or_cap to inode_owner_or_capable

2011-03-24T02:47:13+00:00

And give it a kernel-doc comment.

[akpm@linux-foundation.org: btrfs changed in linux-next]
Signed-off-by: Serge E. Hallyn 
Cc: "Eric W. Biederman" 
Cc: Daniel Lezcano 
Acked-by: David Howells 
Cc: James Morris 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds