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Commit | Line | Data |
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b1bf95bb JW |
1 | #include "cache.h" |
2 | #include "run-command.h" | |
77cb17e9 | 3 | #include "exec_cmd.h" |
b1bf95bb | 4 | |
ebcb5d16 | 5 | int start_command(struct child_process *cmd) |
b1bf95bb | 6 | { |
ebcb5d16 SP |
7 | cmd->pid = fork(); |
8 | if (cmd->pid < 0) | |
b1bf95bb | 9 | return -ERR_RUN_COMMAND_FORK; |
ebcb5d16 | 10 | if (!cmd->pid) { |
f1000898 | 11 | if (cmd->no_stdin) { |
128aed68 DB |
12 | int fd = open("/dev/null", O_RDWR); |
13 | dup2(fd, 0); | |
77cb17e9 | 14 | close(fd); |
95d3c4f5 | 15 | } |
f1000898 | 16 | if (cmd->stdout_to_stderr) |
cd83c74c | 17 | dup2(2, 1); |
f1000898 SP |
18 | if (cmd->git_cmd) { |
19 | execv_git_cmd(cmd->argv); | |
77cb17e9 | 20 | } else { |
f1000898 | 21 | execvp(cmd->argv[0], (char *const*) cmd->argv); |
128aed68 | 22 | } |
f1000898 | 23 | die("exec %s failed.", cmd->argv[0]); |
b1bf95bb | 24 | } |
ebcb5d16 SP |
25 | return 0; |
26 | } | |
27 | ||
28 | int finish_command(struct child_process *cmd) | |
29 | { | |
b1bf95bb JW |
30 | for (;;) { |
31 | int status, code; | |
ebcb5d16 | 32 | pid_t waiting = waitpid(cmd->pid, &status, 0); |
b1bf95bb | 33 | |
6f002f98 | 34 | if (waiting < 0) { |
b1bf95bb JW |
35 | if (errno == EINTR) |
36 | continue; | |
6f002f98 | 37 | error("waitpid failed (%s)", strerror(errno)); |
b1bf95bb JW |
38 | return -ERR_RUN_COMMAND_WAITPID; |
39 | } | |
ebcb5d16 | 40 | if (waiting != cmd->pid) |
b1bf95bb JW |
41 | return -ERR_RUN_COMMAND_WAITPID_WRONG_PID; |
42 | if (WIFSIGNALED(status)) | |
43 | return -ERR_RUN_COMMAND_WAITPID_SIGNAL; | |
44 | ||
45 | if (!WIFEXITED(status)) | |
46 | return -ERR_RUN_COMMAND_WAITPID_NOEXIT; | |
47 | code = WEXITSTATUS(status); | |
48 | if (code) | |
49 | return -code; | |
50 | return 0; | |
51 | } | |
52 | } | |
f1000898 | 53 | |
ebcb5d16 SP |
54 | int run_command(struct child_process *cmd) |
55 | { | |
56 | int code = start_command(cmd); | |
57 | if (code) | |
58 | return code; | |
59 | return finish_command(cmd); | |
60 | } | |
61 | ||
f1000898 SP |
62 | int run_command_v_opt(const char **argv, int opt) |
63 | { | |
64 | struct child_process cmd; | |
65 | memset(&cmd, 0, sizeof(cmd)); | |
66 | cmd.argv = argv; | |
67 | cmd.no_stdin = opt & RUN_COMMAND_NO_STDIN ? 1 : 0; | |
68 | cmd.git_cmd = opt & RUN_GIT_CMD ? 1 : 0; | |
69 | cmd.stdout_to_stderr = opt & RUN_COMMAND_STDOUT_TO_STDERR ? 1 : 0; | |
70 | return run_command(&cmd); | |
71 | } |