BSD 4_3 development

Work on file usr/contrib/mh/sbr/pidwait.c

Synthesized-from: CSRG/cd1/4.3

diff --git a/usr/contrib/mh/sbr/pidwait.c b/usr/contrib/mh/sbr/pidwait.c
new file mode 100644 (file)
index 0000000..41334aa
--- /dev/null
+++ b/usr/contrib/mh/sbr/pidwait.c
@@ -0,0 +1,45 @@
+/* pidwait.c - wait for child to exit */
+
+#include "../h/mh.h"
+#include <signal.h>
+#include <stdio.h>
+#ifdef BSD42
+#include <sys/wait.h>
+#endif BSD42
+
+
+int     pidwait (id, sigsok)
+register int     id,
+                sigsok;
+{
+    register int    pid;
+#ifndef        BSD42
+    int     status;
+#else  BSD42
+    union wait status;
+#endif BSD42
+    int     (*hstat) (), (*istat) (), (*qstat) (), (*tstat) ();
+
+    if (sigsok == NOTOK) {
+       hstat = signal (SIGHUP, SIG_IGN);
+       istat = signal (SIGINT, SIG_IGN);
+       qstat = signal (SIGQUIT, SIG_IGN);
+       tstat = signal (SIGTERM, SIG_IGN);
+    }
+
+    while ((pid = wait (&status)) != NOTOK && pid != id)
+       continue;
+
+    if (sigsok == NOTOK) {
+       (void) signal (SIGHUP, hstat);
+       (void) signal (SIGINT, istat);
+       (void) signal (SIGQUIT, qstat);
+       (void) signal (SIGTERM, tstat);
+    }
+
+#ifndef        BSD42
+    return (pid == NOTOK ? NOTOK : status);
+#else  BSD42
+    return (pid == NOTOK ? NOTOK : status.w_status);
+#endif BSD42
+}