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Diffstat (limited to 'run-command.c')
-rw-r--r--run-command.c73
1 files changed, 61 insertions, 12 deletions
diff --git a/run-command.c b/run-command.c
index bbb9c777e5..b05c734d05 100644
--- a/run-command.c
+++ b/run-command.c
@@ -111,12 +111,16 @@ int start_command(struct child_process *cmd)
unsetenv(*cmd->env);
}
}
+ if (cmd->preexec_cb)
+ cmd->preexec_cb();
if (cmd->git_cmd) {
execv_git_cmd(cmd->argv);
} else {
execvp(cmd->argv[0], (char *const*) cmd->argv);
}
- die("exec %s failed.", cmd->argv[0]);
+ trace_printf("trace: exec '%s' failed: %s\n", cmd->argv[0],
+ strerror(errno));
+ exit(127);
}
#else
int s0 = -1, s1 = -1, s2 = -1; /* backups of stdin, stdout, stderr */
@@ -185,6 +189,7 @@ int start_command(struct child_process *cmd)
#endif
if (cmd->pid < 0) {
+ int err = errno;
if (need_in)
close_pair(fdin);
else if (cmd->in)
@@ -195,7 +200,9 @@ int start_command(struct child_process *cmd)
close(cmd->out);
if (need_err)
close_pair(fderr);
- return -ERR_RUN_COMMAND_FORK;
+ return err == ENOENT ?
+ -ERR_RUN_COMMAND_EXEC :
+ -ERR_RUN_COMMAND_FORK;
}
if (need_in)
@@ -234,9 +241,14 @@ static int wait_or_whine(pid_t pid)
if (!WIFEXITED(status))
return -ERR_RUN_COMMAND_WAITPID_NOEXIT;
code = WEXITSTATUS(status);
- if (code)
+ switch (code) {
+ case 127:
+ return -ERR_RUN_COMMAND_EXEC;
+ case 0:
+ return 0;
+ default:
return -code;
- return 0;
+ }
}
}
@@ -271,14 +283,6 @@ int run_command_v_opt(const char **argv, int opt)
return run_command(&cmd);
}
-int run_command_v_opt_cd(const char **argv, int opt, const char *dir)
-{
- struct child_process cmd;
- prepare_run_command_v_opt(&cmd, argv, opt);
- cmd.dir = dir;
- return run_command(&cmd);
-}
-
int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env)
{
struct child_process cmd;
@@ -348,3 +352,48 @@ int finish_async(struct async *async)
#endif
return ret;
}
+
+int run_hook(const char *index_file, const char *name, ...)
+{
+ struct child_process hook;
+ const char **argv = NULL, *env[2];
+ char index[PATH_MAX];
+ va_list args;
+ int ret;
+ size_t i = 0, alloc = 0;
+
+ if (access(git_path("hooks/%s", name), X_OK) < 0)
+ return 0;
+
+ va_start(args, name);
+ ALLOC_GROW(argv, i + 1, alloc);
+ argv[i++] = git_path("hooks/%s", name);
+ while (argv[i-1]) {
+ ALLOC_GROW(argv, i + 1, alloc);
+ argv[i++] = va_arg(args, const char *);
+ }
+ va_end(args);
+
+ memset(&hook, 0, sizeof(hook));
+ hook.argv = argv;
+ hook.no_stdin = 1;
+ hook.stdout_to_stderr = 1;
+ if (index_file) {
+ snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
+ env[0] = index;
+ env[1] = NULL;
+ hook.env = env;
+ }
+
+ ret = start_command(&hook);
+ free(argv);
+ if (ret) {
+ warning("Could not spawn %s", argv[0]);
+ return ret;
+ }
+ ret = finish_command(&hook);
+ if (ret == -ERR_RUN_COMMAND_WAITPID_SIGNAL)
+ warning("%s exited due to uncaught signal", argv[0]);
+
+ return ret;
+}