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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> | |
4 | ||
128aed68 | 5 | int run_command_v_opt(int argc, char **argv, int flags) |
b1bf95bb JW |
6 | { |
7 | pid_t pid = fork(); | |
8 | ||
9 | if (pid < 0) | |
10 | return -ERR_RUN_COMMAND_FORK; | |
11 | if (!pid) { | |
128aed68 DB |
12 | if (flags & RUN_COMMAND_NO_STDIO) { |
13 | int fd = open("/dev/null", O_RDWR); | |
14 | dup2(fd, 0); | |
15 | dup2(fd, 1); | |
16 | close(fd); | |
17 | } | |
b1bf95bb | 18 | execvp(argv[0], (char *const*) argv); |
19614330 | 19 | die("exec %s failed.", argv[0]); |
b1bf95bb JW |
20 | } |
21 | for (;;) { | |
22 | int status, code; | |
23 | int retval = waitpid(pid, &status, 0); | |
24 | ||
25 | if (retval < 0) { | |
26 | if (errno == EINTR) | |
27 | continue; | |
28 | error("waitpid failed (%s)", strerror(retval)); | |
29 | return -ERR_RUN_COMMAND_WAITPID; | |
30 | } | |
31 | if (retval != pid) | |
32 | return -ERR_RUN_COMMAND_WAITPID_WRONG_PID; | |
33 | if (WIFSIGNALED(status)) | |
34 | return -ERR_RUN_COMMAND_WAITPID_SIGNAL; | |
35 | ||
36 | if (!WIFEXITED(status)) | |
37 | return -ERR_RUN_COMMAND_WAITPID_NOEXIT; | |
38 | code = WEXITSTATUS(status); | |
39 | if (code) | |
40 | return -code; | |
41 | return 0; | |
42 | } | |
43 | } | |
44 | ||
128aed68 DB |
45 | int run_command_v(int argc, char **argv) |
46 | { | |
47 | return run_command_v_opt(argc, argv, 0); | |
48 | } | |
49 | ||
b1bf95bb JW |
50 | int run_command(const char *cmd, ...) |
51 | { | |
52 | int argc; | |
19614330 | 53 | char *argv[MAX_RUN_COMMAND_ARGS]; |
b1bf95bb JW |
54 | const char *arg; |
55 | va_list param; | |
56 | ||
b1bf95bb | 57 | va_start(param, cmd); |
19614330 | 58 | argv[0] = (char*) cmd; |
b1bf95bb JW |
59 | argc = 1; |
60 | while (argc < MAX_RUN_COMMAND_ARGS) { | |
61 | arg = argv[argc++] = va_arg(param, char *); | |
62 | if (!arg) | |
63 | break; | |
64 | } | |
65 | va_end(param); | |
66 | if (MAX_RUN_COMMAND_ARGS <= argc) | |
67 | return error("too many args to run %s", cmd); | |
128aed68 | 68 | return run_command_v_opt(argc, argv, 0); |
b1bf95bb | 69 | } |