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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Utility routines.
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4 | *
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5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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6 | *
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7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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8 | */
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9 |
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10 | #include "libbb.h"
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11 |
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12 | int die_sleep;
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13 | #if ENABLE_FEATURE_PREFER_APPLETS || ENABLE_HUSH
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14 | jmp_buf die_jmp;
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15 | #endif
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16 |
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17 | void xfunc_die(void)
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18 | {
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19 | if (die_sleep) {
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20 | if ((ENABLE_FEATURE_PREFER_APPLETS || ENABLE_HUSH)
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21 | && die_sleep < 0
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22 | ) {
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23 | /* Special case. We arrive here if NOFORK applet
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24 | * calls xfunc, which then decides to die.
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25 | * We don't die, but jump instead back to caller.
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26 | * NOFORK applets still cannot carelessly call xfuncs:
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27 | * p = xmalloc(10);
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28 | * q = xmalloc(10); // BUG! if this dies, we leak p!
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29 | */
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30 | /* -2222 means "zero" (longjmp can't pass 0)
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31 | * run_nofork_applet() catches -2222. */
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32 | longjmp(die_jmp, xfunc_error_retval ? xfunc_error_retval : -2222);
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33 | }
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34 | sleep(die_sleep);
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35 | }
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36 | exit(xfunc_error_retval);
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37 | }
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38 |
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39 | void bb_error_msg_and_die(const char *s, ...)
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40 | {
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41 | va_list p;
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42 |
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43 | va_start(p, s);
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44 | bb_verror_msg(s, p, NULL);
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45 | va_end(p);
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46 | xfunc_die();
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47 | }
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