bozo: test program update

Add -file option to test program to simulate program crashes.

Change-Id: I1ba14152438e2f857fdf5d181023266b3ab64fa3
Reviewed-on: http://gerrit.openafs.org/5533
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

src/bozo/test/testproc.c

@@ -9,21 +9,80 @@
 
 #include <sys/types.h>
 #include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 static int ignore = 0;
 static int sleepTime = 10;
+static int run = 1;
+static char *file = NULL;
 
-sigproc()
+void
+trim(char *s)
+{
+    char *p = strchr(s, '\n');
+    if (p) {
+	*p = '\0';
+    }
+}
+
+int
+readfile(void)
+{
+    FILE *fp;
+    int *bogus = NULL;
+    char buffer[256];
+    if (file) {
+	if ((fp = fopen(file, "r")) == NULL) {
+	    fprintf(stderr, "Unable to open file %s\n", file);
+	    exit(-1);
+	}
+	fgets(buffer, sizeof(buffer), fp);
+	trim(buffer);
+	if (strncmp(buffer, "sleep ", 6) == 0) {
+	    int t = atoi(buffer + 6);
+	    if (t) {
+		sleepTime = t;
+	    }
+	}
+	if (strcmp(buffer, "run") == 0) {
+	    run = 1;
+	}
+	if (strcmp(buffer, "return") == 0) {
+	    run = 0;
+	    sleepTime = 0;
+	}
+	if (strcmp(buffer, "exit") == 0) {
+	    exit(1);
+	}
+	if (strcmp(buffer, "crash") == 0) {
+	    *bogus = 1;		/* intentional */
+	    exit(2);		/* should not reach */
+	}
+	fclose(fp);
+    }
+}
+
+void
+sigproc(int signo)
 {
     printf("testproc received signal\n");
     if (ignore)
-	return 0;
+	return;
     exit(0);
 }
 
-main(argc, argv)
-     int argc;
-     char **argv;
+void
+sigreload(int signo)
+{
+    readfile();
+    return;
+}
+
+
+int
+main(int argc, char **argv)
 {
     int i;
 
@@ -43,19 +102,36 @@ main(argc, argv)
 #endif
     signal(SIGTERM, sigproc);
     signal(SIGQUIT, sigproc);
+    signal(SIGHUP, sigreload);
+
     for (i = 1; i < argc; i++) {
 	if (strcmp(argv[i], "-ignore") == 0) {
 	    ignore = 1;
 	} else if (strcmp(argv[i], "-sleep") == 0) {
 	    sleepTime = atoi(argv[i + 1]);
 	    i++;
+	} else if (strcmp(argv[i], "-file") == 0) {
+	    file = argv[i + 1];
+	    i++;
 	} else {
 	    printf("unrecognized option '%s', try one of\n", argv[i]);
 	    printf("-ignore	    ignore SIGTERM signal\n");
 	    printf("-sleep <n>	    sleep N seconds before exiting\n");
-	    exit(1);
+	    printf("-file <file>    read file for next action\n");
+	    return 1;
 	}
     }
-    sleep(sleepTime);
-    exit(0);
+
+    while (run) {
+	if (file) {
+	    readfile();
+	} else {
+	    run = 0;
+	}
+	if (sleepTime) {
+	    sleep(sleepTime);
+	}
+    }
+
+    return 0;
 }