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/* SPDX-License-Identifier: GPL-2.0 */
#include <sys/wait.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include "utils.h"
#include "namespace.h"
int cmd_exec(const char *cmd, char **argv, bool do_fork,
int (*setup)(void *), void *arg)
{
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 (setup && setup(arg)) {
if (do_fork) {
/* In child, nothing to do */
_exit(1);
}
return -1;
}
if (execvp(cmd, argv) < 0)
fprintf(stderr, "exec of \"%s\" failed: %s\n",
cmd, strerror(errno));
_exit(1);
}
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