diff options
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index bc8e3223161c..437778f62bfb 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2947,7 +2947,6 @@ SYSCALL_DEFINE2(kill, pid_t, pid, int, sig) return kill_something_info(sig, &info, pid); } -#ifdef CONFIG_PROC_FS /* * Verify that the signaler and signalee either are in the same pid namespace * or that the signaler's pid namespace is an ancestor of the signalee's pid @@ -2969,6 +2968,14 @@ static bool access_pidfd_pidns(struct pid *pid) return true; } +static struct pid *pidfd_to_pid(const struct file *file) +{ + if (file->f_op == &pidfd_fops) + return file->private_data; + + return tgid_pidfd_to_pid(file); +} + static int copy_siginfo_from_user_any(siginfo_t *kinfo, siginfo_t __user *info) { #ifdef CONFIG_COMPAT @@ -3020,7 +3027,7 @@ SYSCALL_DEFINE4(pidfd_send_signal, int, pidfd, int, sig, return -EBADF; /* Is this a pidfd? */ - pid = tgid_pidfd_to_pid(f.file); + pid = pidfd_to_pid(f.file); if (IS_ERR(pid)) { ret = PTR_ERR(pid); goto err; @@ -3054,7 +3061,6 @@ err: fdput(f); return ret; } -#endif /* CONFIG_PROC_FS */ static int do_send_specific(pid_t tgid, pid_t pid, int sig, struct siginfo *info) |