-#else
- if (slave_process)
- block_fatal_signals ();
- /* Use vfork() instead of fork() for efficiency. */
- if ((child = vfork ()) == 0)
- {
- /* Child process code. */
- int nullinfd;
- int nulloutfd;
-
- if ((!null_stdin
- || ((nullinfd = open ("/dev/null", O_RDONLY, 0)) >= 0
- && (nullinfd == STDIN_FILENO
- || (dup2 (nullinfd, STDIN_FILENO) >= 0
- && close (nullinfd) >= 0))))
- && (!(null_stdout || null_stderr)
- || ((nulloutfd = open ("/dev/null", O_RDWR, 0)) >= 0
- && (!null_stdout
- || nulloutfd == STDOUT_FILENO
- || dup2 (nulloutfd, STDOUT_FILENO) >= 0)
- && (!null_stderr
- || nulloutfd == STDERR_FILENO
- || dup2 (nulloutfd, STDERR_FILENO) >= 0)
- && ((null_stdout && nulloutfd == STDOUT_FILENO)
- || (null_stderr && nulloutfd == STDERR_FILENO)
- || close (nulloutfd) >= 0)))
- && (!slave_process || (unblock_fatal_signals (), true)))
- execvp (prog_path, prog_argv);
- _exit (127);
- }
- if (child == -1)
- {
- if (slave_process)
- unblock_fatal_signals ();
- if (exit_on_error || !null_stderr)
- error (exit_on_error ? EXIT_FAILURE : 0, errno,
- _("%s subprocess failed"), progname);
- return 127;
- }
-#endif