[PATCH] kill(-1,sig)

[Andries.Brouwer@cwi.nl]

The new POSIX 1003.1-2001 is explicit about what kill(-1,sig)
is supposed to do. Maybe we should follow it.

Andries

--- signal.c~	Thu Nov 22 01:26:27 2001
+++ signal.c	Fri Dec 14 18:27:34 2001
@@ -649,8 +649,10 @@
 /*
  * kill_something_info() interprets pid in interesting ways just like kill(2).
  *
- * POSIX specifies that kill(-1,sig) is unspecified, but what we have
- * is probably wrong.  Should make it like BSD or SYSV.
+ * POSIX (2001) specifies "If pid is -1, sig shall be sent to all processes
+ * (excluding an unspecified set of system processes) for which the process
+ * has permission to send that signal."
+ * So, probably the process should also signal itself.
  */
 
 static int kill_something_info(int sig, struct siginfo *info, int pid)
@@ -663,7 +665,7 @@
 
 		read_lock(&tasklist_lock);
 		for_each_task(p) {
-			if (p->pid > 1 && p != current) {
+			if (p->pid > 1) {
 				int err = send_sig_info(sig, info, p);
 				++count;
 				if (err != -EPERM)