diff options
Diffstat (limited to 'kernel/pid.c')
| -rw-r--r-- | kernel/pid.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/kernel/pid.c b/kernel/pid.c index 924084713be8..22f5d2b2e290 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -564,15 +564,29 @@ struct pid *pidfd_get_pid(unsigned int fd, unsigned int *flags) */ struct task_struct *pidfd_get_task(int pidfd, unsigned int *flags) { - unsigned int f_flags; + unsigned int f_flags = 0; struct pid *pid; struct task_struct *task; + enum pid_type type; - pid = pidfd_get_pid(pidfd, &f_flags); - if (IS_ERR(pid)) - return ERR_CAST(pid); + switch (pidfd) { + case PIDFD_SELF_THREAD: + type = PIDTYPE_PID; + pid = get_task_pid(current, type); + break; + case PIDFD_SELF_THREAD_GROUP: + type = PIDTYPE_TGID; + pid = get_task_pid(current, type); + break; + default: + pid = pidfd_get_pid(pidfd, &f_flags); + if (IS_ERR(pid)) + return ERR_CAST(pid); + type = PIDTYPE_TGID; + break; + } - task = get_pid_task(pid, PIDTYPE_TGID); + task = get_pid_task(pid, type); put_pid(pid); if (!task) return ERR_PTR(-ESRCH); |