-
- pid = fork();
- switch (pid) {
- case -1:
- fclose(f);
- close(p[0]);
- close(p[1]);
- return NULL;
- case 0:
- if (dup2(p[1-op], 1-op) < 0) _exit(127);
- if (p[0] != 1-op) close(p[0]);
- if (p[1] != 1-op) close(p[1]);
- execl("/bin/sh", "sh", "-c", cmd, (char *)0);
- _exit(127);
+
+ e = ENOMEM;
+ if (!posix_spawn_file_actions_init(&fa)) {
+ for (FILE *l = *__ofl_lock(); l; l=l->next)
+ if (l->pipe_pid && posix_spawn_file_actions_addclose(&fa, l->fd))
+ goto fail;
+ if (!posix_spawn_file_actions_adddup2(&fa, p[1-op], 1-op)) {
+ if (!(e = posix_spawn(&pid, "/bin/sh", &fa, 0,
+ (char *[]){ "sh", "-c", (char *)cmd, 0 }, __environ))) {
+ posix_spawn_file_actions_destroy(&fa);
+ f->pipe_pid = pid;
+ if (!strchr(mode, 'e'))
+ fcntl(p[op], F_SETFD, 0);
+ __syscall(SYS_close, p[1-op]);
+ __ofl_unlock();
+ return f;
+ }
+ }
+fail:
+ __ofl_unlock();
+ posix_spawn_file_actions_destroy(&fa);