94ace50a252e662d70f8a4c8eed6b0019ea487dd
1 #include "cache.h"
2 #include "run-command.h"
3 #include "exec_cmd.h"
5 int run_command_v_opt(const char **argv, int flags)
6 {
7 pid_t pid = fork();
9 if (pid < 0)
10 return -ERR_RUN_COMMAND_FORK;
11 if (!pid) {
12 if (flags & RUN_COMMAND_NO_STDIN) {
13 int fd = open("/dev/null", O_RDWR);
14 dup2(fd, 0);
15 close(fd);
16 }
17 if (flags & RUN_COMMAND_STDOUT_TO_STDERR)
18 dup2(2, 1);
19 if (flags & RUN_GIT_CMD) {
20 execv_git_cmd(argv);
21 } else {
22 execvp(argv[0], (char *const*) argv);
23 }
24 die("exec %s failed.", argv[0]);
25 }
26 for (;;) {
27 int status, code;
28 pid_t waiting = waitpid(pid, &status, 0);
30 if (waiting < 0) {
31 if (errno == EINTR)
32 continue;
33 error("waitpid failed (%s)", strerror(errno));
34 return -ERR_RUN_COMMAND_WAITPID;
35 }
36 if (waiting != pid)
37 return -ERR_RUN_COMMAND_WAITPID_WRONG_PID;
38 if (WIFSIGNALED(status))
39 return -ERR_RUN_COMMAND_WAITPID_SIGNAL;
41 if (!WIFEXITED(status))
42 return -ERR_RUN_COMMAND_WAITPID_NOEXIT;
43 code = WEXITSTATUS(status);
44 if (code)
45 return -code;
46 return 0;
47 }
48 }