source: MondoRescue/branches/2.2.9/mindi-busybox/libbb/xfunc_die.c@ 3320

/* vi: set sw=4 ts=4: */
/*
 * Utility routines.
 *
 * Copyright (C) 2008 by Denys Vlasenko <vda.linux@googlemail.com>
 *
 * Licensed under GPLv2, see file LICENSE in this source tree.
 */

/* Keeping it separate allows to NOT suck in stdio for VERY small applets.
 * Try building busybox with only "true" enabled... */

#include "libbb.h"

int die_sleep;
#if ENABLE_FEATURE_PREFER_APPLETS || ENABLE_HUSH
jmp_buf die_jmp;
#endif

void FAST_FUNC xfunc_die(void)
{
    if (die_sleep) {
        if ((ENABLE_FEATURE_PREFER_APPLETS || ENABLE_HUSH)
         && die_sleep < 0
        ) {
            /* Special case. We arrive here if NOFORK applet
             * calls xfunc, which then decides to die.
             * We don't die, but jump instead back to caller.
             * NOFORK applets still cannot carelessly call xfuncs:
             * p = xmalloc(10);
             * q = xmalloc(10); // BUG! if this dies, we leak p!
             */
            /* -2222 means "zero" (longjmp can't pass 0)
             * run_nofork_applet() catches -2222. */
            longjmp(die_jmp, xfunc_error_retval ? xfunc_error_retval : -2222);
        }
        sleep(die_sleep);
    }
    exit(xfunc_error_retval);
}