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linux/security/tomoyo
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Davidlohr Bueso d4144ea6e7 tomoyo: reduce mmap_sem hold for mm->exe_file 
The mm->exe_file is currently serialized with mmap_sem (shared) in order
to both safely (1) read the file and (2) compute the realpath by calling
tomoyo_realpath_from_path, making it an absolute overkill.  Good users
will, on the other hand, make use of the more standard get_mm_exe_file(),
requiring only holding the mmap_sem to read the value, and relying on
reference

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17 09:04:11 -04:00
..
policy tomoyo: Do not generate empty policy files 2015-04-07 21:27:45 +02:00
.gitignore tomoyo: Do not generate empty policy files 2015-04-07 21:27:45 +02:00
audit.c tomoyo: Use sensible time interface 2014-06-12 16:18:45 +02:00
common.c tomoyo: Use sensible time interface 2014-06-12 16:18:45 +02:00
common.h switch security_inode_getattr() to struct path * 2015-04-11 22:24:32 -04:00
condition.c userns: Convert tomoyo to use kuid and kgid where appropriate 2012-09-21 03:13:22 -07:00
domain.c tomoyo: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:28 +08:00
environ.c TOMOYO: Add environment variable name restriction support. 2011-09-14 08:27:05 +10:00
file.c switch security_inode_getattr() to struct path * 2015-04-11 22:24:32 -04:00
gc.c TOMOYO: Fix quota and garbage collector. 2011-10-12 12:15:20 +11:00
group.c TOMOYO: Add socket operation restriction support. 2011-09-14 08:27:05 +10:00
Kconfig tomoyo: Use bin2c to generate builtin-policy.h 2015-04-07 21:27:45 +02:00
load_policy.c usermodehelper: use UMH_WAIT_PROC consistently 2012-03-23 16:58:41 -07:00
Makefile tomoyo: Do not generate empty policy files 2015-04-07 21:27:45 +02:00
memory.c TOMOYO: Remove tomoyo_policy_memory_lock spinlock. 2011-09-26 10:46:22 +10:00
mount.c consitify do_mount() arguments 2012-10-11 20:02:04 -04:00
network.c TOMOYO: Add socket operation restriction support. 2011-09-14 08:27:05 +10:00
realpath.c constify tomoyo_realpath_from_path() 2015-04-11 22:24:31 -04:00
securityfs_if.c tomoyo_close_control: don't bother with return value 2013-04-29 15:41:42 -04:00
tomoyo.c switch security_inode_getattr() to struct path * 2015-04-11 22:24:32 -04:00
util.c tomoyo: reduce mmap_sem hold for mm->exe_file 2015-04-17 09:04:11 -04:00