signal compatibility routines to do 4.2/4.3 signal calls using POSIX

SCCS-vsn: lib/libc/compat-43/sigcompat.c 5.1

diff --git a/usr/src/lib/libc/compat-43/sigcompat.c b/usr/src/lib/libc/compat-43/sigcompat.c
new file mode 100644 (file)
index 0000000..2481e47
--- /dev/null
+++ b/usr/src/lib/libc/compat-43/sigcompat.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sigcompat.c        5.1 (Berkeley) %G%";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/signal.h>
+
+sigvec(signo, sv, osv)
+       int signo;
+       struct sigvec *sv, *osv;
+{
+       int ret;
+
+       if (sv)
+               sv->sv_flags ^= SV_INTERRUPT;   /* !SA_INTERRUPT */
+       ret = sigaction(signo, (struct sigaction *)sv, (struct sigaction *)osv);
+       if (ret == 0 && osv)
+               osv->sv_flags ^= SV_INTERRUPT;  /* !SA_INTERRUPT */
+       return (ret);
+}
+
+sigsetmask(mask)
+       int mask;
+{
+       int omask, n;
+
+       n = sigprocmask(SIG_SETMASK, (sigset_t *) &mask, (sigset_t *) &omask);
+       if (n)
+               return (n);
+       return (omask);
+}
+
+sigblock(mask)
+       int mask;
+{
+       int omask, n;
+
+       n = sigprocmask(SIG_BLOCK, (sigset_t *) &mask, (sigset_t *) &omask);
+       if (n)
+               return (n);
+       return (omask);
+}
+
+sigpause(mask)
+       int mask;
+{
+
+       return (sigsuspend((sigset_t *)&mask));
+}