From: Erik van der Kouwe <erik@minix3.org>
Date: Sun, 13 Sep 2009 12:24:23 +0000 (+0000)
Subject: Handle SIGSTOP more consistently and according to POSIX rules; it can no longer be... 
X-Git-Tag: v3.1.5~148
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/zpipe.c?a=commitdiff_plain;h=3615d93383a33eab3ae01ee99ca00465c2e002f7;p=minix.git

Handle SIGSTOP more consistently and according to POSIX rules; it can no longer be ignored
---

diff --git a/man/man2/sigaction.2 b/man/man2/sigaction.2
index c35044b34..9c1fa71fd 100644
--- a/man/man2/sigaction.2
+++ b/man/man2/sigaction.2
@@ -182,7 +182,9 @@ The process should be stopped, but is killed instead.
 .PP
 The
 .B SIGKILL
-signal cannot be caught or ignored.  The
+and
+.B SIGSTOP
+signals cannot be caught or ignored.  The
 .B SIGILL
 and
 .B SIGTRAP
diff --git a/servers/pm/signal.c b/servers/pm/signal.c
index aec9a670c..ca1c73f6a 100644
--- a/servers/pm/signal.c
+++ b/servers/pm/signal.c
@@ -82,6 +82,7 @@ PUBLIC int do_sigaction()
   }
   mp->mp_sigact[m_in.sig_nr].sa_handler = svec.sa_handler;
   sigdelset(&svec.sa_mask, SIGKILL);
+  sigdelset(&svec.sa_mask, SIGSTOP);
   mp->mp_sigact[m_in.sig_nr].sa_mask = svec.sa_mask;
   mp->mp_sigact[m_in.sig_nr].sa_flags = svec.sa_flags;
   mp->mp_sigreturn = (vir_bytes) m_in.sig_ret;
@@ -160,6 +161,7 @@ PUBLIC int do_sigsuspend()
   mp->mp_sigmask2 = mp->mp_sigmask;	/* save the old mask */
   mp->mp_sigmask = (sigset_t) m_in.sig_set;
   sigdelset(&mp->mp_sigmask, SIGKILL);
+  sigdelset(&mp->mp_sigmask, SIGSTOP);
   mp->mp_flags |= SIGSUSPENDED;
   check_pending(mp);
   return(SUSPEND);
@@ -178,6 +180,7 @@ PUBLIC int do_sigreturn()
 
   mp->mp_sigmask = (sigset_t) m_in.sig_set;
   sigdelset(&mp->mp_sigmask, SIGKILL);
+  sigdelset(&mp->mp_sigmask, SIGSTOP);
 
   r = sys_sigreturn(who_e, (struct sigmsg *) m_in.sig_context);
   check_pending(mp);