diff options
| author | Oleg Nesterov <[email protected]> | 2016-05-23 16:23:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2016-05-23 17:04:14 -0700 |
| commit | 91c4e8ea8f05916df0c8a6f383508ac7c9e10dba (patch) | |
| tree | 005f573a07013f8ece804b2792efd457e06ba764 | |
| parent | bf959931ddb88c4e4366e96dd22e68fa0db9527c (diff) | |
wait: allow sys_waitid() to accept __WNOTHREAD/__WCLONE/__WALL
I see no reason why waitid() can't support other linux-specific flags
allowed in sys_wait4().
In particular this change can help if we reconsider the previous change
("wait/ptrace: assume __WALL if the child is traced") which adds the
"automagical" __WALL for debugger.
Signed-off-by: Oleg Nesterov <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: Jan Kratochvil <[email protected]>
Cc: "Michael Kerrisk (man-pages)" <[email protected]>
Cc: Pedro Alves <[email protected]>
Cc: Roland McGrath <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | kernel/exit.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 44fbe6edd7fe..9e6e1356e6bb 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -1535,7 +1535,8 @@ SYSCALL_DEFINE5(waitid, int, which, pid_t, upid, struct siginfo __user *, enum pid_type type; long ret; - if (options & ~(WNOHANG|WNOWAIT|WEXITED|WSTOPPED|WCONTINUED)) + if (options & ~(WNOHANG|WNOWAIT|WEXITED|WSTOPPED|WCONTINUED| + __WNOTHREAD|__WCLONE|__WALL)) return -EINVAL; if (!(options & (WEXITED|WSTOPPED|WCONTINUED))) return -EINVAL; |