+ if (safe_waitpid(pid, &status, 0) == -1)
+ return -1;
+ if (WIFEXITED(status))
+ return WEXITSTATUS(status);
+ if (WIFSIGNALED(status))
+ return WTERMSIG(status) + 1000;
+ return 0;
+}
+
+#if ENABLE_FEATURE_PREFER_APPLETS
+void FAST_FUNC save_nofork_data(struct nofork_save_area *save)
+{
+ memcpy(&save->die_jmp, &die_jmp, sizeof(die_jmp));
+ save->applet_name = applet_name;
+ save->xfunc_error_retval = xfunc_error_retval;
+ save->option_mask32 = option_mask32;
+ save->die_sleep = die_sleep;
+ save->saved = 1;
+}
+
+void FAST_FUNC restore_nofork_data(struct nofork_save_area *save)
+{
+ memcpy(&die_jmp, &save->die_jmp, sizeof(die_jmp));
+ applet_name = save->applet_name;
+ xfunc_error_retval = save->xfunc_error_retval;
+ option_mask32 = save->option_mask32;
+ die_sleep = save->die_sleep;
+}
+
+int FAST_FUNC run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv)
+{
+ int rc, argc;
+
+ applet_name = APPLET_NAME(applet_no);
+
+ xfunc_error_retval = EXIT_FAILURE;
+
+ /* Special flag for xfunc_die(). If xfunc will "die"
+ * in NOFORK applet, xfunc_die() sees negative
+ * die_sleep and longjmp here instead. */
+ die_sleep = -1;
+
+ /* In case getopt() or getopt32() was already called:
+ * reset the libc getopt() function, which keeps internal state.
+ *
+ * BSD-derived getopt() functions require that optind be set to 1 in
+ * order to reset getopt() state. This used to be generally accepted
+ * way of resetting getopt(). However, glibc's getopt()
+ * has additional getopt() state beyond optind, and requires that
+ * optind be set to zero to reset its state. So the unfortunate state of
+ * affairs is that BSD-derived versions of getopt() misbehave if
+ * optind is set to 0 in order to reset getopt(), and glibc's getopt()
+ * will core dump if optind is set 1 in order to reset getopt().
+ *
+ * More modern versions of BSD require that optreset be set to 1 in
+ * order to reset getopt(). Sigh. Standards, anyone?
+ */
+#ifdef __GLIBC__
+ optind = 0;
+#else /* BSD style */
+ optind = 1;
+ /* optreset = 1; */
+#endif
+ /* optarg = NULL; opterr = 1; optopt = 63; - do we need this too? */
+ /* (values above are what they initialized to in glibc and uclibc) */
+ /* option_mask32 = 0; - not needed, no applet depends on it being 0 */
+
+ argc = 1;
+ while (argv[argc])
+ argc++;
+
+ rc = setjmp(die_jmp);
+ if (!rc) {
+ /* Some callers (xargs)
+ * need argv untouched because they free argv[i]! */
+ char *tmp_argv[argc+1];
+ memcpy(tmp_argv, argv, (argc+1) * sizeof(tmp_argv[0]));
+ /* Finally we can call NOFORK applet's main() */
+ rc = applet_main[applet_no](argc, tmp_argv);
+
+ /* The whole reason behind nofork_save_area is that <applet>_main
+ * may exit non-locally! For example, in hush Ctrl-Z tries
+ * (modulo bugs) to dynamically create a child (backgrounded task)
+ * if it detects that Ctrl-Z was pressed when a NOFORK was running.
+ * Testcase: interactive "rm -i".
+ * Don't fool yourself into thinking "and <applet>_main() returns
+ * quickly here" and removing "useless" nofork_save_area code. */