commit 5ab46b345e418747b3a52f0892680c0745c4223c
author Jiri Slaby <jirislaby@gmail.com> Fri Aug 28 14:05:12 2009 +0200
committer Jiri Slaby <jirislaby@gmail.com> Fri Jul 16 09:48:45 2010 +0200
tree d7453221b7fc2764a7405b48b73b4ac7bf7a317a
parent 8fd00b4d7014b00448eb33cf0590815304769798

rlimits: add task_struct to update_rlimit_cpu

Add task_struct as a parameter to update_rlimit_cpu to be able to set
rlimit_cpu of different task than current.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: James Morris <jmorris@namei.org>

include/linux/posix-timers.h

diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index 4f71bf4..3e23844a 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -117,6 +117,6 @@
 
 long clock_nanosleep_restart(struct restart_block *restart_block);
 
-void update_rlimit_cpu(unsigned long rlim_new);
+void update_rlimit_cpu(struct task_struct *task, unsigned long rlim_new);
 
 #endif

kernel/posix-cpu-timers.c

diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index 9829646..0513900 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -16,13 +16,13 @@
  * siglock protection since other code may update expiration cache as
  * well.
  */
-void update_rlimit_cpu(unsigned long rlim_new)
+void update_rlimit_cpu(struct task_struct *task, unsigned long rlim_new)
 {
 	cputime_t cputime = secs_to_cputime(rlim_new);
 
-	spin_lock_irq(&current->sighand->siglock);
-	set_process_cpu_timer(current, CPUCLOCK_PROF, &cputime, NULL);
-	spin_unlock_irq(&current->sighand->siglock);
+	spin_lock_irq(&task->sighand->siglock);
+	set_process_cpu_timer(task, CPUCLOCK_PROF, &cputime, NULL);
+	spin_unlock_irq(&task->sighand->siglock);
 }
 
 static int check_clock(const clockid_t which_clock)

kernel/sys.c

diff --git a/kernel/sys.c b/kernel/sys.c
index 1ba4522..f5183b0 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1320,7 +1320,7 @@
 	if (new_rlim.rlim_cur == RLIM_INFINITY)
 		goto out;
 
-	update_rlimit_cpu(new_rlim.rlim_cur);
+	update_rlimit_cpu(current, new_rlim.rlim_cur);
 out:
 	return 0;
 }

security/selinux/hooks.c

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index e3ce6b4..afb18a9 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2338,7 +2338,8 @@
 			initrlim = init_task.signal->rlim + i;
 			rlim->rlim_cur = min(rlim->rlim_max, initrlim->rlim_cur);
 		}
-		update_rlimit_cpu(current->signal->rlim[RLIMIT_CPU].rlim_cur);
+		update_rlimit_cpu(current,
+				current->signal->rlim[RLIMIT_CPU].rlim_cur);
 	}
 }