]>
Commit | Line | Data |
---|---|---|
b1bf95bb JW |
1 | #include "cache.h" |
2 | #include "run-command.h" | |
3 | #include <sys/wait.h> | |
4 | ||
19614330 | 5 | int run_command_v(int argc, char **argv) |
b1bf95bb JW |
6 | { |
7 | pid_t pid = fork(); | |
8 | ||
9 | if (pid < 0) | |
10 | return -ERR_RUN_COMMAND_FORK; | |
11 | if (!pid) { | |
12 | execvp(argv[0], (char *const*) argv); | |
19614330 | 13 | die("exec %s failed.", argv[0]); |
b1bf95bb JW |
14 | } |
15 | for (;;) { | |
16 | int status, code; | |
17 | int retval = waitpid(pid, &status, 0); | |
18 | ||
19 | if (retval < 0) { | |
20 | if (errno == EINTR) | |
21 | continue; | |
22 | error("waitpid failed (%s)", strerror(retval)); | |
23 | return -ERR_RUN_COMMAND_WAITPID; | |
24 | } | |
25 | if (retval != pid) | |
26 | return -ERR_RUN_COMMAND_WAITPID_WRONG_PID; | |
27 | if (WIFSIGNALED(status)) | |
28 | return -ERR_RUN_COMMAND_WAITPID_SIGNAL; | |
29 | ||
30 | if (!WIFEXITED(status)) | |
31 | return -ERR_RUN_COMMAND_WAITPID_NOEXIT; | |
32 | code = WEXITSTATUS(status); | |
33 | if (code) | |
34 | return -code; | |
35 | return 0; | |
36 | } | |
37 | } | |
38 | ||
39 | int run_command(const char *cmd, ...) | |
40 | { | |
41 | int argc; | |
19614330 | 42 | char *argv[MAX_RUN_COMMAND_ARGS]; |
b1bf95bb JW |
43 | const char *arg; |
44 | va_list param; | |
45 | ||
b1bf95bb | 46 | va_start(param, cmd); |
19614330 | 47 | argv[0] = (char*) cmd; |
b1bf95bb JW |
48 | argc = 1; |
49 | while (argc < MAX_RUN_COMMAND_ARGS) { | |
50 | arg = argv[argc++] = va_arg(param, char *); | |
51 | if (!arg) | |
52 | break; | |
53 | } | |
54 | va_end(param); | |
55 | if (MAX_RUN_COMMAND_ARGS <= argc) | |
56 | return error("too many args to run %s", cmd); | |
19614330 | 57 | return run_command_v(argc, argv); |
b1bf95bb | 58 | } |