sigaction workaround for VMS

Message-Id: <a05101001b75908704194@[192.168.56.145]>

p4raw-id: //depot/perl@10827

2 files changed, 32 insertions, 0 deletions

diff --git a/vms/vms.c b/vms/vms.c
index 406276d541..548d130cac 100644
--- a/vms/vms.c
+++ b/vms/vms.c
@@ -1064,6 +1064,27 @@ my_tmpfile(void)
 }
 /*}}}*/
 
+
+#ifndef HOMEGROWN_POSIX_SIGNALS
+/*
+ * The C RTL's sigaction fails to check for invalid signal numbers so we 
+ * help it out a bit.  The docs are correct, but the actual routine doesn't
+ * do what the docs say it will.
+ */
+/*{{{int Perl_my_sigaction (pTHX_ int, const struct sigaction*, struct sigaction*);*/
+int
+Perl_my_sigaction (pTHX_ int sig, const struct sigaction* act, 
+                   struct sigaction* oact)
+{
+  if (sig == SIGKILL || sig == SIGSTOP || sig == SIGCONT) {
+	SETERRNO(EINVAL, SS$_INVARG);
+	return -1;
+  }
+  return sigaction(sig, act, oact);
+}
+/*}}}*/
+#endif
+
 /* default piping mailbox size */
 #define PERL_BUFSIZ        512
 
diff --git a/vms/vmsish.h b/vms/vmsish.h
index 7f4a3b3980..93af772415 100644
--- a/vms/vmsish.h
+++ b/vms/vmsish.h
@@ -492,6 +492,14 @@ struct utimbuf {
 #  define sa_mask sv_mask
 #  define sigsuspend(set) sigpause(*set)
 #  define sigpending(a) (not_here("sigpending"),0)
+#else
+/*
+ * The C RTL's sigaction fails to check for invalid signal numbers so we 
+ * help it out a bit.
+ */
+#  ifndef DONT_MASK_RTL_CALLS
+#    define sigaction(a,b,c) Perl_my_sigaction(a,b,c)
+#  endif
 #endif
 
 /* VMS doesn't use a real sys_nerr, but we need this when scanning for error
@@ -747,6 +755,9 @@ char *	my_gconvert (double, int, int, char *);
 int	Perl_kill_file (pTHX_ char *);
 int	Perl_my_chdir (pTHX_ char *);
 FILE *	Perl_my_tmpfile ();
+#ifndef HOMEGROWN_POSIX_SIGNALS
+int	Perl_my_sigaction (pTHX_ int, const struct sigaction*, struct sigaction*);
+#endif
 int	Perl_my_utime (pTHX_ char *, struct utimbuf *);
 void	Perl_vms_image_init (int *, char ***);
 struct dirent *	Perl_readdir (pTHX_ DIR *);