close(fd[1]);
}
+#ifndef WIN32
static inline void dup_devnull(int to)
{
int fd = open("/dev/null", O_RDWR);
dup2(fd, to);
close(fd);
}
+#endif
+
+static const char **prepare_shell_cmd(const char **argv)
+{
+ int argc, nargc = 0;
+ const char **nargv;
+
+ for (argc = 0; argv[argc]; argc++)
+ ; /* just counting */
+ /* +1 for NULL, +3 for "sh -c" plus extra $0 */
+ nargv = xmalloc(sizeof(*nargv) * (argc + 1 + 3));
+
+ if (argc < 1)
+ die("BUG: shell command is empty");
+
+ if (strcspn(argv[0], "|&;<>()$`\\\"' \t\n*?[#~=%") != strlen(argv[0])) {
+ nargv[nargc++] = "sh";
+ nargv[nargc++] = "-c";
+
+ if (argc < 2)
+ nargv[nargc++] = argv[0];
+ else {
+ struct strbuf arg0 = STRBUF_INIT;
+ strbuf_addf(&arg0, "%s \"$@\"", argv[0]);
+ nargv[nargc++] = strbuf_detach(&arg0, NULL);
+ }
+ }
+
+ for (argc = 0; argv[argc]; argc++)
+ nargv[nargc++] = argv[argc];
+ nargv[nargc] = NULL;
+
+ return nargv;
+}
+
+#ifndef WIN32
+static int execv_shell_cmd(const char **argv)
+{
+ const char **nargv = prepare_shell_cmd(argv);
+ trace_argv_printf(nargv, "trace: exec:");
+ execvp(nargv[0], (char **)nargv);
+ free(nargv);
+ return -1;
+}
+#endif
int start_command(struct child_process *cmd)
{
trace_argv_printf(cmd->argv, "trace: run_command:");
-#ifndef __MINGW32__
+#ifndef WIN32
fflush(NULL);
cmd->pid = fork();
if (!cmd->pid) {
cmd->preexec_cb();
if (cmd->git_cmd) {
execv_git_cmd(cmd->argv);
+ } else if (cmd->use_shell) {
+ execv_shell_cmd(cmd->argv);
} else {
execvp(cmd->argv[0], (char *const*) cmd->argv);
}
strerror(failed_errno = errno));
#else
{
- int s0 = -1, s1 = -1, s2 = -1; /* backups of stdin, stdout, stderr */
+ int fhin = 0, fhout = 1, fherr = 2;
const char **sargv = cmd->argv;
char **env = environ;
- if (cmd->no_stdin) {
- s0 = dup(0);
- dup_devnull(0);
- } else if (need_in) {
- s0 = dup(0);
- dup2(fdin[0], 0);
- } else if (cmd->in) {
- s0 = dup(0);
- dup2(cmd->in, 0);
- }
-
- if (cmd->no_stderr) {
- s2 = dup(2);
- dup_devnull(2);
- } else if (need_err) {
- s2 = dup(2);
- dup2(fderr[1], 2);
- }
-
- if (cmd->no_stdout) {
- s1 = dup(1);
- dup_devnull(1);
- } else if (cmd->stdout_to_stderr) {
- s1 = dup(1);
- dup2(2, 1);
- } else if (need_out) {
- s1 = dup(1);
- dup2(fdout[1], 1);
- } else if (cmd->out > 1) {
- s1 = dup(1);
- dup2(cmd->out, 1);
- }
+ if (cmd->no_stdin)
+ fhin = open("/dev/null", O_RDWR);
+ else if (need_in)
+ fhin = dup(fdin[0]);
+ else if (cmd->in)
+ fhin = dup(cmd->in);
+
+ if (cmd->no_stderr)
+ fherr = open("/dev/null", O_RDWR);
+ else if (need_err)
+ fherr = dup(fderr[1]);
+
+ if (cmd->no_stdout)
+ fhout = open("/dev/null", O_RDWR);
+ else if (cmd->stdout_to_stderr)
+ fhout = dup(fherr);
+ else if (need_out)
+ fhout = dup(fdout[1]);
+ else if (cmd->out > 1)
+ fhout = dup(cmd->out);
if (cmd->dir)
die("chdir in start_command() not implemented");
if (cmd->git_cmd) {
cmd->argv = prepare_git_cmd(cmd->argv);
+ } else if (cmd->use_shell) {
+ cmd->argv = prepare_shell_cmd(cmd->argv);
}
- cmd->pid = mingw_spawnvpe(cmd->argv[0], cmd->argv, env);
+ cmd->pid = mingw_spawnvpe(cmd->argv[0], cmd->argv, env,
+ fhin, fhout, fherr);
failed_errno = errno;
if (cmd->pid < 0 && (!cmd->silent_exec_failure || errno != ENOENT))
error("cannot spawn %s: %s", cmd->argv[0], strerror(errno));
free(cmd->argv);
cmd->argv = sargv;
- if (s0 >= 0)
- dup2(s0, 0), close(s0);
- if (s1 >= 0)
- dup2(s1, 1), close(s1);
- if (s2 >= 0)
- dup2(s2, 2), close(s2);
+ if (fhin != 0)
+ close(fhin);
+ if (fhout != 1)
+ close(fhout);
+ if (fherr != 2)
+ close(fherr);
}
#endif
cmd->git_cmd = opt & RUN_GIT_CMD ? 1 : 0;
cmd->stdout_to_stderr = opt & RUN_COMMAND_STDOUT_TO_STDERR ? 1 : 0;
cmd->silent_exec_failure = opt & RUN_SILENT_EXEC_FAILURE ? 1 : 0;
+ cmd->use_shell = opt & RUN_USING_SHELL ? 1 : 0;
}
int run_command_v_opt(const char **argv, int opt)
return run_command(&cmd);
}
-#ifdef __MINGW32__
-static __stdcall unsigned run_thread(void *data)
+#ifdef WIN32
+static unsigned __stdcall run_thread(void *data)
{
struct async *async = data;
return async->proc(async->fd_for_proc, async->data);
return error("cannot create pipe: %s", strerror(errno));
async->out = pipe_out[0];
-#ifndef __MINGW32__
+#ifndef WIN32
/* Flush stdio before fork() to avoid cloning buffers */
fflush(NULL);
int finish_async(struct async *async)
{
-#ifndef __MINGW32__
+#ifndef WIN32
int ret = wait_or_whine(async->pid, "child process", 0);
#else
DWORD ret = 0;