user/sven/linux.git/kernel/acct.c, branch v2.6.31.2

bsdacct: fix access to invalid filp in acct_on()

2009-07-01T01:56:00Z

The file opened in acct_on and freshly stored in the ns->bacct struct can be closed in acct_file_reopen by a concurrent call after we release acct_lock and before we call mntput(file->f_path.mnt). Record file->f_path.mnt in a local variable and use this variable only. Signed-off-by: Renaud Lottiaux Signed-off-by: Louis Rilling Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[CVE-2009-0029] System call wrappers part 04

2009-01-14T13:15:19Z

Signed-off-by: Heiko Carstens

CRED: Wrap task credential accesses in the core kernel

2008-11-13T23:39:12Z

Wrap access to task credentials so that they can be separated more easily from the task_struct during the introduction of COW creds. Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id(). Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more sense to use RCU directly rather than a convenient wrapper; these will be addressed by later patches. Signed-off-by: David Howells Reviewed-by: James Morris Acked-by: Serge Hallyn Cc: Al Viro Cc: linux-audit@redhat.com Cc: containers@lists.linux-foundation.org Cc: linux-mm@kvack.org Signed-off-by: James Morris

tty: Fix abusers of current->sighand->tty

2008-10-13T16:51:42Z

Various people outside the tty layer still stick their noses in behind the scenes. We need to make sure they also obey the locking and referencing rules. Signed-off-by: Alan Cox Signed-off-by: Linus Torvalds

bsdacct: fix and add comments around acct_process()

2008-07-25T17:53:47Z

Fix the one describing what this function is and add one more - about locking absence around pid namespaces loop. Signed-off-by: Pavel Emelyanov Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bsdacct: account dying tasks in all relevant namespaces

2008-07-25T17:53:47Z

This just makes the acct_proces walk the pid namespaces from current up to the top and account a task in each with the accounting turned on. ns->parent access if safe lockless, since current it still alive and holds its namespace, which in turn holds its parent. Signed-off-by: Pavel Emelyanov Cc: Balbir Singh Cc: "Eric W. Biederman" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bsdacct: turn acct off for all pidns-s on umount time

2008-07-25T17:53:47Z

All the bsd_acct_strcts with opened accounting are linked into a global list. So, the acct_auto_close(_mnt) walks one and drops the accounting for each. Signed-off-by: Pavel Emelyanov Cc: Balbir Singh Cc: "Eric W. Biederman" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bsdacct: switch from global bsd_acct_struct instance to per-pidns one

2008-07-25T17:53:47Z

Allocate the structure on the first call to sys_acct(). After this each namespace, that ordered the accounting, will live with this structure till its own death. Two notes - routines, that close the accounting on fs umount time use the init_pid_ns's acct by now; - accounting routine accounts to dying task's namespace (also by now). Signed-off-by: Pavel Emelyanov Cc: Balbir Singh Cc: "Eric W. Biederman" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bsdacct: make internal code work with passed bsd_acct_struct, not global

2008-07-25T17:53:47Z

This adds the appropriate pointer to all the internal (i.e. static) functions that work with global acct instance. API calls pass a global instance to them (while we still have such). Mostly this is a s/acct_globals./acct->/ over the file. Signed-off-by: Pavel Emelyanov Cc: Balbir Singh Cc: "Eric W. Biederman" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bsdacct: turn the acct_lock from on-the-struct to global

2008-07-25T17:53:47Z

Don't use per-bsd-acct-struct lock, but work with a global one. This lock is taken for short periods, so it doesn't seem it'll become a bottleneck, but it will allow us to easily avoid many locking difficulties in the future. So this is a mostly s/acct_globals.lock/acct_lock/ over the file. Signed-off-by: Pavel Emelyanov Cc: Balbir Singh Cc: "Eric W. Biederman" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds