Add C versions of the pnohang and ptimeout scripts (previously written in

perl).  Thanks to all those who submitted versions of these.

Submitted by:	marcus (based on)

2 files changed, 192 insertions, 0 deletions

diff --git a/Tools/portbuild/scripts/pnohang.c b/Tools/portbuild/scripts/pnohang.c
new file mode 100644
index 0000000..a85b7b5
--- /dev/null
+++ b/Tools/portbuild/scripts/pnohang.c
@@ -0,0 +1,117 @@
+/* pnohang: executes command ($4-) with output in file ($3)
+ * kills command if no output with $1 seconds with message in $2
+ * usage: pnohang timeout file command args ...
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <signal.h>
+#include <unistd.h>
+#include <time.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main(int argc, char *argv[])
+{
+    	int timeout, status, i, result, ofd;
+	char *command, *outfile, *message, args[MAXPATHLEN + 1];
+	char logstr[BUFSIZ + 1];
+	pid_t pid, pid1, pid2, child;
+	time_t now;
+	struct stat st;
+	struct sigaction sv;
+
+	if (argc < 3) {
+	    	printf("usage: %s timeout outfile message command [args...]\n",
+			argv[0]);
+		exit(1);
+	}
+
+	timeout = atoi(argv[1]);
+	outfile = argv[2];
+	message = argv[3];
+	command = argv[4];
+
+	bzero(args, MAXPATHLEN + 1);
+	for (i = 4; i < argc; i++) {
+	    	strlcat(args, argv[i], MAXPATHLEN - strlen(args));
+		strlcat(args, " ", MAXPATHLEN - strlen(args));
+	}
+
+	pid = getpid();
+
+	/*printf("timeout is %d\n", timeout);
+	printf("outfile is %s\n", outfile);
+	printf("message is %s\n", message);
+	printf("arguments are %s", args);*/
+
+	if ((ofd = open(outfile, O_CREAT|O_TRUNC|O_WRONLY, 0600)) == -1)
+		err(1, "open");
+
+	if (dup2(ofd, STDOUT_FILENO) == -1)
+		err(1, "dup2 stdout");
+	if (dup2(ofd, STDERR_FILENO) == -1)
+		err(1, "dup2 stderr");
+
+	if ((pid1 = fork()) > 0) {
+	    	if ((pid2 = fork()) > 0) {
+		    sv.sa_handler = SIG_IGN;
+		    sigemptyset(&sv.sa_mask);
+		    sv.sa_flags = 0;
+		    sigaction(SIGTERM, &sv, 0);
+		    
+		    /* parent */
+		    child = wait(&status);
+		    /*printf("exited child is %d, status is %d\n", child, status);*/
+
+		    if (pid1 = child) {
+			/*printf("killing process %d (second child)\n", pid2);*/
+			kill(pid2, SIGTERM);
+		    } else {
+			/*printf("killing process %d (first child)\n", pid1);*/
+			kill(pid1, SIGTERM);
+		    }
+		    /* exit status in upper 8 bits, killed signal (if any) in
+		     * lower 8 bits
+		     */
+		    exit((status >> 8) | (status & 0xff));
+		} else {
+		    /* second child */
+		    for (;;) {
+			sleep(timeout/10);
+			now = time(NULL);
+			stat(outfile, &st);
+			if ((now - st.st_mtime) > timeout) {
+			    /*snprintf(logstr, BUFSIZ, "logger -t %s killing %s %s, pid %d since no output in %d seconds", argv[0], args, message, pid, timeout);
+			    system(logstr);*/
+			    printf("%s: killing %s (%s, pid %d and %d) since no output in %d seconds since %s", argv[0], args, message, pid1, pid, timeout, ctime(&now));
+			    printf("ps jgx before the singal\n");
+			    system("ps jgxww");
+			    sleep(1); /* give it a chance to output the message */
+			    kill(pid1, SIGTERM);
+			    sleep(1);
+			    kill(pid, SIGTERM);
+			    sleep(1);
+			    system("ps jgxww");
+			    exit(1);
+			}
+		    }
+		}
+	} else {
+	    	/* first child */
+		/*printf("executing %s\n", args);*/
+		result = execvp(command, argv + 4);
+		if (result < 0) {
+		    printf("Failed to exec %s: %s\n", args, strerror(errno));
+		    exit(1);
+		}
+	}
+
+	return 0;
+}
diff --git a/Tools/portbuild/scripts/ptimeout.c b/Tools/portbuild/scripts/ptimeout.c
new file mode 100644
index 0000000..33e9ecc
--- /dev/null
+++ b/Tools/portbuild/scripts/ptimeout.c
@@ -0,0 +1,75 @@
+/* ptimeout: executes command but kills it after a specified timeout
+ * usage: ptimeout timeout command args ...
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <time.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main(int argc, char *argv[])
+{
+    	int timeout, status, i;
+	pid_t pid1, pid2, child;
+	char *command, args[MAXPATHLEN + 1];
+	time_t t;
+
+	if (argc < 3) {
+		printf("usage: %s timeout command [args ...]\n", argv[0]);
+		exit(1);
+	}
+
+	timeout = atoi(argv[1]);
+	command = argv[2];
+
+	bzero(args, MAXPATHLEN + 1);
+	for (i = 2; i < argc; i++) {
+	    	strlcat(args, argv[i], MAXPATHLEN - strlen(args));
+		strlcat(args, " ", MAXPATHLEN - strlen(args));
+	}
+
+	/*printf("timeout is %d\n", timeout);
+	printf("arguments are %s\n", args);*/
+
+	if ((pid1 = fork()) > 0) {
+	    	if ((pid2 = fork()) > 0) {
+		    /* parent */
+		    /*printf("child pids are %d %d\n", pid1, pid2);*/
+		    child = wait(&status);
+		    /*printf("exited child is %d, status is %d\n", child, status);*/
+		    if (pid1 = child) {
+			/*printf("killing process %d\n", pid2);*/
+			kill(pid2, SIGTERM);
+		    } else {
+			/*printf("killing process %d\n", pid1);*/
+			kill(pid1, SIGTERM);
+		    }
+		    /* exit status in upper 8 bits, killed signal (if any)
+		     * in lower 8 bits
+		     */
+		    exit((status >> 8) | (status & 0xff));
+		} else {
+		    /* second child */
+		    sleep(timeout);
+		    t = time(NULL);
+		    printf("ptimeout: killing %s (pid %d) since timeout of %d expired at %s", args, pid1, timeout, ctime(&t));
+		    kill(pid1, SIGTERM);
+		    exit(1);
+		}
+	} else {
+	    	/* first child */
+		/*printf("executing %s\n", args);*/
+		execvp(command, argv + 2);
+	}
+
+	/* Shouldn't be reached. */
+	return 0;
+}