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.

Oleg Nesterov committed 10 years ago

Commit 91c4e8e1 parent bf959931 file · +2 −1Browse files

Showing the changes to kernel (1 of 1 file). Show all

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kernel/exit.c+2−1

@@ -1535,7 +1535,8 @@ SYSCALL_DEFINE5(waitid, int, which, pid_t, upid, struct siginfo __user *, · 1534 unmodified lines
1535	1535	enum pid_type type;
1536	1536	long ret;
1537	1537
1538		− if (options & ~(WNOHANG\|WNOWAIT\|WEXITED\|WSTOPPED\|WCONTINUED))
	1538	+ if (options & ~(WNOHANG\|WNOWAIT\|WEXITED\|WSTOPPED\|WCONTINUED\|
	1539	+ __WNOTHREAD\|__WCLONE\|__WALL))
1539	1540	return -EINVAL;
1540	1541	if (!(options & (WEXITED\|WSTOPPED\|WCONTINUED)))
1541	1542	return -EINVAL;