2010-03-14 19:58:47 -04:00
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/*
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2013-04-24 09:35:02 -04:00
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* Copyright (c) 2004-2005, 2010-2013 Todd C. Miller <Todd.Miller@courtesan.com>
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2010-03-14 19:58:47 -04:00
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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2010-08-30 09:14:41 -04:00
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#include <config.h>
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#include <sys/types.h>
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2010-03-14 19:58:47 -04:00
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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2012-11-25 09:34:15 -05:00
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#ifdef HAVE_STDBOOL_H
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# include <stdbool.h>
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#else
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# include "compat/stdbool.h"
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#endif /* HAVE_STDBOOL_H */
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2010-03-14 19:58:47 -04:00
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2014-02-11 09:40:59 -07:00
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#define DEFAULT_TEXT_DOMAIN "sudo"
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#include "gettext.h" /* must be included before missing.h */
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2010-09-07 16:45:19 -04:00
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#include "missing.h"
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#include "alloc.h"
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2013-08-15 14:24:29 -06:00
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#include "fatal.h"
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2013-10-22 09:08:09 -06:00
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#include "queue.h"
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2010-09-07 16:45:19 -04:00
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#include "sudo_plugin.h"
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2010-03-14 19:58:47 -04:00
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2013-10-22 09:08:09 -06:00
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struct sudo_fatal_callback {
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SLIST_ENTRY(sudo_fatal_callback) entries;
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void (*func)(void);
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};
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SLIST_HEAD(sudo_fatal_callback_list, sudo_fatal_callback);
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2013-04-18 14:07:59 -04:00
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sigjmp_buf fatal_jmp;
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2012-11-25 09:34:26 -05:00
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static bool setjmp_enabled = false;
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2013-10-22 09:08:09 -06:00
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static struct sudo_fatal_callback_list callbacks;
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2012-11-25 09:34:40 -05:00
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static void _warning(int, const char *, va_list);
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static void
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do_cleanup(void)
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{
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2013-04-18 14:07:59 -04:00
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struct sudo_fatal_callback *cb;
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2012-11-25 09:34:40 -05:00
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/* Run callbacks, removing them from the list as we go. */
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2013-10-22 09:08:09 -06:00
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while ((cb = SLIST_FIRST(&callbacks)) != NULL) {
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SLIST_REMOVE_HEAD(&callbacks, entries);
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2012-11-25 09:34:40 -05:00
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cb->func();
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free(cb);
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}
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}
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2010-03-14 19:58:47 -04:00
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void
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2013-11-18 08:59:57 -07:00
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fatal_nodebug(const char *fmt, ...)
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2010-03-14 19:58:47 -04:00
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{
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2010-05-03 16:53:05 -04:00
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va_list ap;
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va_start(ap, fmt);
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_warning(1, fmt, ap);
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va_end(ap);
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2012-11-25 09:34:40 -05:00
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do_cleanup();
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2012-11-25 09:34:26 -05:00
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if (setjmp_enabled)
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2013-04-18 14:07:59 -04:00
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siglongjmp(fatal_jmp, 1);
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2012-11-25 09:33:33 -05:00
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else
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2013-04-20 15:10:24 -04:00
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exit(EXIT_FAILURE);
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2010-03-14 19:58:47 -04:00
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}
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void
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2013-11-18 08:59:57 -07:00
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fatalx_nodebug(const char *fmt, ...)
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2010-03-14 19:58:47 -04:00
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{
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2010-05-03 16:53:05 -04:00
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va_list ap;
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va_start(ap, fmt);
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_warning(0, fmt, ap);
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va_end(ap);
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2012-11-25 09:34:40 -05:00
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do_cleanup();
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2012-11-25 09:34:26 -05:00
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if (setjmp_enabled)
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2013-04-18 14:07:59 -04:00
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siglongjmp(fatal_jmp, 1);
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2012-11-25 09:33:33 -05:00
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else
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2013-04-20 15:10:24 -04:00
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exit(EXIT_FAILURE);
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2010-03-14 19:58:47 -04:00
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}
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2012-11-08 15:37:42 -05:00
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void
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2013-11-18 08:59:57 -07:00
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vfatal_nodebug(const char *fmt, va_list ap)
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2012-11-08 15:37:42 -05:00
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{
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_warning(1, fmt, ap);
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2012-11-25 09:34:40 -05:00
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do_cleanup();
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2012-11-25 09:34:26 -05:00
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if (setjmp_enabled)
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2013-04-18 14:07:59 -04:00
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siglongjmp(fatal_jmp, 1);
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2012-11-25 09:33:33 -05:00
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else
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2013-04-20 15:10:24 -04:00
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exit(EXIT_FAILURE);
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2012-11-08 15:37:42 -05:00
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}
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void
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2013-11-18 08:59:57 -07:00
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vfatalx_nodebug(const char *fmt, va_list ap)
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2012-11-08 15:37:42 -05:00
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{
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_warning(0, fmt, ap);
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2012-11-25 09:34:40 -05:00
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do_cleanup();
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2012-11-25 09:34:26 -05:00
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if (setjmp_enabled)
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2013-04-18 14:07:59 -04:00
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siglongjmp(fatal_jmp, 1);
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2012-11-25 09:33:33 -05:00
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else
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2013-04-20 15:10:24 -04:00
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exit(EXIT_FAILURE);
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2012-11-08 15:37:42 -05:00
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}
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2010-03-14 19:58:47 -04:00
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void
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2013-11-18 08:59:57 -07:00
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warning_nodebug(const char *fmt, ...)
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2010-03-14 19:58:47 -04:00
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{
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2010-05-03 16:53:05 -04:00
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va_list ap;
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va_start(ap, fmt);
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_warning(1, fmt, ap);
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va_end(ap);
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2010-03-14 19:58:47 -04:00
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}
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void
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2013-11-18 08:59:57 -07:00
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warningx_nodebug(const char *fmt, ...)
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2010-03-14 19:58:47 -04:00
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{
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2010-05-03 16:53:05 -04:00
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va_list ap;
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va_start(ap, fmt);
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_warning(0, fmt, ap);
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va_end(ap);
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2010-03-14 19:58:47 -04:00
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}
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2012-11-08 15:37:42 -05:00
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void
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2013-11-18 08:59:57 -07:00
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vwarning_nodebug(const char *fmt, va_list ap)
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2012-11-08 15:37:42 -05:00
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{
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_warning(1, fmt, ap);
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}
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void
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2013-11-18 08:59:57 -07:00
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vwarningx_nodebug(const char *fmt, va_list ap)
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2012-11-08 15:37:42 -05:00
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{
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_warning(0, fmt, ap);
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}
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2010-03-14 19:58:47 -04:00
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static void
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_warning(int use_errno, const char *fmt, va_list ap)
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{
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2012-11-25 09:34:04 -05:00
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int serrno = errno;
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2012-11-25 09:34:33 -05:00
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char *str;
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2012-11-08 15:37:44 -05:00
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2012-11-25 09:34:33 -05:00
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evasprintf(&str, fmt, ap);
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if (use_errno) {
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2012-11-25 09:33:33 -05:00
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if (fmt != NULL) {
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2012-11-25 09:34:33 -05:00
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sudo_printf(SUDO_CONV_ERROR_MSG,
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_("%s: %s: %s\n"), getprogname(), str, strerror(serrno));
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} else {
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sudo_printf(SUDO_CONV_ERROR_MSG,
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_("%s: %s\n"), getprogname(), strerror(serrno));
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2012-11-25 09:33:33 -05:00
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}
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2012-11-25 09:34:33 -05:00
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} else {
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sudo_printf(SUDO_CONV_ERROR_MSG,
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_("%s: %s\n"), getprogname(), str ? str : "(null)");
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2010-03-15 07:14:45 -04:00
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}
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2012-11-25 09:34:33 -05:00
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efree(str);
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errno = serrno;
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2010-03-14 19:58:47 -04:00
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}
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2012-11-25 09:34:15 -05:00
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2014-05-12 11:45:17 -06:00
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/*
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* Register a callback to be run when fatal()/fatalx() is called.
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*/
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2012-11-25 09:34:40 -05:00
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int
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2013-04-18 14:07:59 -04:00
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fatal_callback_register(void (*func)(void))
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2012-11-25 09:34:15 -05:00
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{
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2013-04-18 14:07:59 -04:00
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struct sudo_fatal_callback *cb;
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2012-11-25 09:34:15 -05:00
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2014-05-12 11:45:17 -06:00
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/* Do not register the same callback twice. */
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SLIST_FOREACH(cb, &callbacks, entries) {
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if (func == cb->func)
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return -1; /* dupe! */
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}
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/* Allocate and insert new callback. */
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2012-11-25 09:34:40 -05:00
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cb = malloc(sizeof(*cb));
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if (cb == NULL)
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return -1;
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cb->func = func;
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2013-10-22 09:08:09 -06:00
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SLIST_INSERT_HEAD(&callbacks, cb, entries);
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2012-11-25 09:34:40 -05:00
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return 0;
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2012-11-25 09:34:15 -05:00
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}
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2012-11-25 09:34:26 -05:00
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2014-05-12 11:45:17 -06:00
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/*
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* Deregister a fatal()/fatalx() callback.
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*/
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int
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fatal_callback_deregister(void (*func)(void))
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{
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struct sudo_fatal_callback *cb, **prev;
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/* Search for callback and remove if found, dupes are not allowed. */
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SLIST_FOREACH_PREVPTR(cb, prev, &callbacks, entries) {
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if (cb->func == func) {
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if (cb == SLIST_FIRST(&callbacks))
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SLIST_REMOVE_HEAD(&callbacks, entries);
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else
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SLIST_REMOVE_AFTER(*prev, entries);
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free(cb);
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return 0;
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}
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}
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return -1;
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}
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2012-11-25 09:34:26 -05:00
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void
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2013-04-18 14:07:59 -04:00
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fatal_disable_setjmp(void)
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2012-11-25 09:34:26 -05:00
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{
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2012-11-29 06:37:13 -05:00
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setjmp_enabled = false;
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2012-11-25 09:34:26 -05:00
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}
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void
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2013-04-18 14:07:59 -04:00
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fatal_enable_setjmp(void)
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2012-11-25 09:34:26 -05:00
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{
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2012-11-29 06:37:13 -05:00
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setjmp_enabled = true;
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2012-11-25 09:34:26 -05:00
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}
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