[PATCH rt-tests v1 13/13] ssdd: Add JSON output feature

@@ -36,6 +36,8 @@
 #include <sys/wait.h>
 #include <sys/ptrace.h>
 
+#include "rt-utils.h"
+
 /* do_wait return values */
 #define STATE_EXITED	1
 #define STATE_STOPPED	2

@@ -65,10 +67,11 @@ static const char *get_state_name(int state)
 #define unused __attribute__((unused))
 
 static int quiet;
+static char outfile[MAX_PATH];
 
 static int got_sigchld;
 
-enum option_value { OPT_NFORKS=1, OPT_NITERS, OPT_HELP, OPT_QUIET };
+enum option_value { OPT_NFORKS=1, OPT_NITERS, OPT_HELP, OPT_OUTPUT, OPT_QUIET };
 
 static void usage(int error)
 {

@@ -77,6 +80,7 @@ static void usage(int error)
 	       "ssdd <options>\n\n"
 	       "-f       --forks=NUM       number of forks\n"
 	       "-h       --help            print this message\n"
+	       "         --output=FILENAME write final results into FILENAME, JSON formatted\n"
 	       "-q       --quiet           suppress running output\n"
 	       "-i       --iters=NUM       number of iterations\n"
 	       );

@@ -287,6 +291,13 @@ static int forktests(int testid)
 	exit(0);
 }
 
+static void write_stats(FILE *f, void *data)
+{
+	int *error = data;
+
+	fprintf(f, "  \"success\": %d\n", !*error);
+}
+
 int main(int argc, char **argv)
 {
 	int i, ret_sig, status;

@@ -295,12 +306,14 @@ int main(int argc, char **argv)
 
 	setbuf(stdout, NULL);
 
+	rt_init(argc, argv);
 	for (;;) {
 		int option_index = 0;
 
 		static struct option long_options[] = {
 			{"forks",		required_argument,	NULL, OPT_NFORKS},
 			{"help",		no_argument,		NULL, OPT_HELP},
+			{"output",		required_argument,	NULL, OPT_OUTPUT},
 			{"quiet",		no_argument,		NULL, OPT_QUIET},
 			{"iters",		required_argument,	NULL, OPT_NITERS},
 			{NULL, 0, NULL, 0},

@@ -317,6 +330,9 @@ int main(int argc, char **argv)
 		case OPT_HELP:
 			usage(0);
 			break;
+		case OPT_OUTPUT:
+			strncpy(outfile, optarg, strnlen(optarg, MAX_PATH-1));
+			break;
 		case OPT_QUIET:
 		case 'q':
 			quiet = 1;

@@ -348,6 +364,7 @@ int main(int argc, char **argv)
 			forktests(i);
 	}
 
+	rt_test_start();
 	for (i = 0; i < nforks; i++) {
 		status = do_wait(&wait_pid, &ret_sig);
 		if (status != STATE_EXITED) {

@@ -363,5 +380,9 @@ int main(int argc, char **argv)
 	printf("%s.\n", error ?
 		"One or more tests FAILED" :
 		"All tests PASSED");
+
+	if (strlen(outfile) != 0)
+		rt_write_json(outfile, write_stats, &error);
+
 	exit(error);
 }