From 8dc86af00612e5ccff3384c17575362a3f2a2ca0 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Fri, 8 Feb 2008 04:21:52 -0800 Subject: Use find_task_by_vpid in posix timers All the functions that need to lookup a task by pid in posix timers obtain this pid from a user space, and thus this value refers to a task in the same namespace, as the current task lives in. So the proper behavior is to call find_task_by_vpid() here. Signed-off-by: Pavel Emelyanov Cc: "Eric W. Biederman" Cc: Thomas Gleixner Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/posix-cpu-timers.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'kernel/posix-cpu-timers.c') diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c index 0b7c82ac467e..2eae91f954ca 100644 --- a/kernel/posix-cpu-timers.c +++ b/kernel/posix-cpu-timers.c @@ -20,7 +20,7 @@ static int check_clock(const clockid_t which_clock) return 0; read_lock(&tasklist_lock); - p = find_task_by_pid(pid); + p = find_task_by_vpid(pid); if (!p || !(CPUCLOCK_PERTHREAD(which_clock) ? same_thread_group(p, current) : thread_group_leader(p))) { error = -EINVAL; @@ -305,7 +305,7 @@ int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *tp) */ struct task_struct *p; rcu_read_lock(); - p = find_task_by_pid(pid); + p = find_task_by_vpid(pid); if (p) { if (CPUCLOCK_PERTHREAD(which_clock)) { if (same_thread_group(p, current)) { @@ -354,7 +354,7 @@ int posix_cpu_timer_create(struct k_itimer *new_timer) if (pid == 0) { p = current; } else { - p = find_task_by_pid(pid); + p = find_task_by_vpid(pid); if (p && !same_thread_group(p, current)) p = NULL; } @@ -362,7 +362,7 @@ int posix_cpu_timer_create(struct k_itimer *new_timer) if (pid == 0) { p = current->group_leader; } else { - p = find_task_by_pid(pid); + p = find_task_by_vpid(pid); if (p && !thread_group_leader(p)) p = NULL; } -- cgit v1.2.3