added test for syslogmt(3), vsyslogmt(3)

lib/libc/tests/gen/syslogmt.c

@@ -0,0 +1,66 @@
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <gno/gno.h>
+#include <stdarg.h>
+#include <syslog.h>
+#include <unistd.h>
+
+#define MAX_PROC 10
+#define LOOP_COUNT 5
+
+#pragma lint -1
+#pragma optimize 78
+#pragma debug 0
+
+int lock;
+
+void
+child_process (void) {
+	int i;
+	pid_t pid;
+	
+	/* wait for everyone else */
+	pid = getpid();
+	swait(lock);
+	for (i=0; i<LOOP_COUNT; i++) {
+		syslogmt(LOG_NOTICE, "child %d loop %d of %d",
+			 pid, i, LOOP_COUNT);
+	}
+	_exit(0);
+}
+
+int
+main (int argc, char **argv) {
+	int i;
+	union wait status;
+	pid_t pid;
+
+	openlog("syslogmt-test", LOG_NDELAY|LOG_PID, LOG_DAEMON);
+	syslogmt(LOG_NOTICE, "creating semaphore lock");
+	
+	if ((lock = screate(1)) == -1) {
+		syslogmt(LOG_NOTICE, "screate failed: %m");
+		exit(1);
+	}
+
+	/* create the children */
+	for (i=0; i<MAX_PROC; i++) {
+		syslogmt(LOG_NOTICE, "forking child %d", i);
+		fork(child_process);
+	}
+
+	/* release the children */
+	syslogmt(LOG_NOTICE, "doing a raise of %d", MAX_PROC);
+	for (i=0; i<MAX_PROC; i++) {
+		ssignal(lock);
+	}
+
+	/* wait for the children */
+	while((pid = wait(&status)) != -1) {
+		syslogmt(LOG_NOTICE, "parent: wait returned for child %d",
+			 pid);
+	}
+	syslogmt(LOG_NOTICE, "parent: done, closing log");
+	closelog();
+	return 0;
+}