Commit 30c42b9b authored by Dariusz Stojaczyk's avatar Dariusz Stojaczyk Committed by Daniel Verkamp
Browse files

vhost: added option to save pid to file 



Usage:
./vhost -f path/to/pidfile
A text file containing single pid number will be created

Change-Id: Ia7762ce3085400a47740c9a5f44b56d63c9fafc6
Signed-off-by: default avatarDariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/368518


Tested-by: default avatarSPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
parent 0d984281

app/vhost/vhost.c

+25 −1
Original line number Diff line number Diff line
@@ -64,6 +64,7 @@ usage(char *executable_name) 
	printf("options:\n");

	printf(" -c config  config file (default: %s)\n", defaults.config_file);

	printf(" -e mask    tracepoint group mask for spdk trace buffers (default: 0x0)\n");

	printf(" -f pidfile save pid to file under given path\n");

	printf(" -m mask    reactor core mask (default: 0x1)\n");

	printf(" -n channel number of memory channels used for DPDK\n");

	printf(" -p core    master (primary) core for DPDK\n");
@@ -75,6 +76,21 @@ usage(char *executable_name) 
	printf(" -q         disable notice level logging to stderr\n");

}



static void

save_pid(const char *pid_path)

{

	FILE *pid_file;



	pid_file = fopen(pid_path, "w");

	if (pid_file == NULL) {

		fprintf(stderr, "Couldn't create pid file '%s': %s\n", pid_path, strerror(errno));

		exit(EXIT_FAILURE);

	}



	fprintf(pid_file, "%d\n", getpid());

	fclose(pid_file);

}



int

main(int argc, char *argv[])

{
@@ -83,10 +99,11 @@ main(int argc, char *argv[]) 
	int rc;

	const char *socket_path = NULL;

	enum spdk_log_level print_level = SPDK_LOG_NOTICE;

	const char *pid_path = NULL;



	vhost_app_opts_init(&opts);



	while ((ch = getopt(argc, argv, "c:de:m:p:qs:S:t:h")) != -1) {

	while ((ch = getopt(argc, argv, "c:de:f:m:p:qs:S:t:h")) != -1) {

		switch (ch) {

		case 'c':

			opts.config_file = optarg;
@@ -97,6 +114,9 @@ main(int argc, char *argv[]) 
		case 'e':

			opts.tpoint_group_mask = optarg;

			break;

		case 'f':

			pid_path = optarg;

			break;

		case 'h':

			usage(argv[0]);

			exit(EXIT_SUCCESS);
@@ -137,6 +157,10 @@ main(int argc, char *argv[]) 
		}

	}



	if (pid_path) {

		save_pid(pid_path);

	}



	if (print_level > SPDK_LOG_WARN &&

	    isatty(STDERR_FILENO) &&

	    !strncmp(ttyname(STDERR_FILENO), "/dev/tty", strlen("/dev/tty"))) {