[mirror_iproute2.git] / lib / exec.c

/* SPDX-License-Identifier: GPL-2.0 */
#include <sys/wait.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>

#include "utils.h"

int cmd_exec(const char *cmd, char **argv, bool do_fork)
{
	fflush(stdout);
	if (do_fork) {
		int status;
		pid_t pid;

		pid = fork();
		if (pid < 0) {
			perror("fork");
			exit(1);
		}

		if (pid != 0) {
			/* Parent  */
			if (waitpid(pid, &status, 0) < 0) {
				perror("waitpid");
				exit(1);
			}

			if (WIFEXITED(status)) {
				return WEXITSTATUS(status);
			}

			exit(1);
		}
	}

	if (execvp(cmd, argv)  < 0)
		fprintf(stderr, "exec of \"%s\" failed: %s\n",
				cmd, strerror(errno));
	_exit(1);
}
Commit	Line	Data
6054c1eb	1	/* SPDX-License-Identifier: GPL-2.0 */
08bd33d7 DA	2	#include <sys/wait.h>
	3	#include <stdio.h>
	4	#include <errno.h>
	5	#include <unistd.h>
	6
	7	#include "utils.h"
	8
	9	int cmd_exec(const char cmd, char *argv, bool do_fork)
	10	{
	11	fflush(stdout);
	12	if (do_fork) {
	13	int status;
	14	pid_t pid;
	15
	16	pid = fork();
	17	if (pid < 0) {
	18	perror("fork");
	19	exit(1);
	20	}
	21
	22	if (pid != 0) {
	23	/* Parent */
	24	if (waitpid(pid, &status, 0) < 0) {
	25	perror("waitpid");
	26	exit(1);
	27	}
	28
	29	if (WIFEXITED(status)) {
	30	return WEXITSTATUS(status);
	31	}
	32
	33	exit(1);
	34	}
	35	}
	36
	37	if (execvp(cmd, argv) < 0)
	38	fprintf(stderr, "exec of \"%s\" failed: %s\n",
	39	cmd, strerror(errno));
	40	_exit(1);
	41	}