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Commit | Line | Data |
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b1bf95bb JW |
1 | #include "cache.h" |
2 | #include "run-command.h" | |
3 | #include <sys/wait.h> | |
77cb17e9 | 4 | #include "exec_cmd.h" |
b1bf95bb | 5 | |
128aed68 | 6 | int run_command_v_opt(int argc, char **argv, int flags) |
b1bf95bb JW |
7 | { |
8 | pid_t pid = fork(); | |
9 | ||
10 | if (pid < 0) | |
11 | return -ERR_RUN_COMMAND_FORK; | |
12 | if (!pid) { | |
128aed68 DB |
13 | if (flags & RUN_COMMAND_NO_STDIO) { |
14 | int fd = open("/dev/null", O_RDWR); | |
15 | dup2(fd, 0); | |
16 | dup2(fd, 1); | |
77cb17e9 MO |
17 | close(fd); |
18 | } | |
19 | if (flags & RUN_GIT_CMD) { | |
20 | execv_git_cmd(argv); | |
21 | } else { | |
22 | execvp(argv[0], (char *const*) argv); | |
128aed68 | 23 | } |
19614330 | 24 | die("exec %s failed.", argv[0]); |
b1bf95bb JW |
25 | } |
26 | for (;;) { | |
27 | int status, code; | |
28 | int retval = waitpid(pid, &status, 0); | |
29 | ||
30 | if (retval < 0) { | |
31 | if (errno == EINTR) | |
32 | continue; | |
33 | error("waitpid failed (%s)", strerror(retval)); | |
34 | return -ERR_RUN_COMMAND_WAITPID; | |
35 | } | |
36 | if (retval != pid) | |
37 | return -ERR_RUN_COMMAND_WAITPID_WRONG_PID; | |
38 | if (WIFSIGNALED(status)) | |
39 | return -ERR_RUN_COMMAND_WAITPID_SIGNAL; | |
40 | ||
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 | } | |
49 | ||
128aed68 DB |
50 | int run_command_v(int argc, char **argv) |
51 | { | |
52 | return run_command_v_opt(argc, argv, 0); | |
53 | } | |
54 | ||
b1bf95bb JW |
55 | int run_command(const char *cmd, ...) |
56 | { | |
57 | int argc; | |
19614330 | 58 | char *argv[MAX_RUN_COMMAND_ARGS]; |
b1bf95bb JW |
59 | const char *arg; |
60 | va_list param; | |
61 | ||
b1bf95bb | 62 | va_start(param, cmd); |
19614330 | 63 | argv[0] = (char*) cmd; |
b1bf95bb JW |
64 | argc = 1; |
65 | while (argc < MAX_RUN_COMMAND_ARGS) { | |
66 | arg = argv[argc++] = va_arg(param, char *); | |
67 | if (!arg) | |
68 | break; | |
69 | } | |
70 | va_end(param); | |
71 | if (MAX_RUN_COMMAND_ARGS <= argc) | |
72 | return error("too many args to run %s", cmd); | |
128aed68 | 73 | return run_command_v_opt(argc, argv, 0); |
b1bf95bb | 74 | } |