This file is indexed.

/usr/include/isc/util.h is in libbind-dev 1:9.9.5.dfsg-3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
/*
 * Copyright (C) 2004-2007, 2010-2012  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 1998-2001  Internet Software Consortium.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

/* $Id$ */

#ifndef ISC_UTIL_H
#define ISC_UTIL_H 1

/*! \file isc/util.h
 * NOTE:
 *
 * This file is not to be included from any <isc/???.h> (or other) library
 * files.
 *
 * \brief
 * Including this file puts several macros in your name space that are
 * not protected (as all the other ISC functions/macros do) by prepending
 * ISC_ or isc_ to the name.
 */

/***
 *** General Macros.
 ***/

/*%
 * Use this to hide unused function arguments.
 * \code
 * int
 * foo(char *bar)
 * {
 *	UNUSED(bar);
 * }
 * \endcode
 */
#define UNUSED(x)      (void)(x)

/*%
 * The opposite: silent warnings about stored values which are never read.
 */
#define POST(x)        (void)(x)

#define ISC_MAX(a, b)  ((a) > (b) ? (a) : (b))
#define ISC_MIN(a, b)  ((a) < (b) ? (a) : (b))

/*%
 * Use this to remove the const qualifier of a variable to assign it to
 * a non-const variable or pass it as a non-const function argument ...
 * but only when you are sure it won't then be changed!
 * This is necessary to sometimes shut up some compilers
 * (as with gcc -Wcast-qual) when there is just no other good way to avoid the
 * situation.
 */
#define DE_CONST(konst, var) \
	do { \
		union { const void *k; void *v; } _u; \
		_u.k = konst; \
		var = _u.v; \
	} while (0)

/*%
 * Use this in translation units that would otherwise be empty, to
 * suppress compiler warnings.
 */
#define EMPTY_TRANSLATION_UNIT static void isc__empty(void) { isc__empty(); }

/*%
 * We use macros instead of calling the routines directly because
 * the capital letters make the locking stand out.
 * We RUNTIME_CHECK for success since in general there's no way
 * for us to continue if they fail.
 */

#ifdef ISC_UTIL_TRACEON
#define ISC_UTIL_TRACE(a) a
#include <stdio.h>		/* Required for fprintf/stderr when tracing. */
#include <isc/msgs.h>		/* Required for isc_msgcat when tracing. */
#else
#define ISC_UTIL_TRACE(a)
#endif

#include <isc/result.h>		/* Contractual promise. */

#define LOCK(lp) do { \
	ISC_UTIL_TRACE(fprintf(stderr, "%s %p %s %d\n", \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_LOCKING, "LOCKING"), \
			       (lp), __FILE__, __LINE__)); \
	RUNTIME_CHECK(isc_mutex_lock((lp)) == ISC_R_SUCCESS); \
	ISC_UTIL_TRACE(fprintf(stderr, "%s %p %s %d\n", \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_LOCKED, "LOCKED"), \
			       (lp), __FILE__, __LINE__)); \
	} while (0)
#define UNLOCK(lp) do { \
	RUNTIME_CHECK(isc_mutex_unlock((lp)) == ISC_R_SUCCESS); \
	ISC_UTIL_TRACE(fprintf(stderr, "%s %p %s %d\n", \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_UNLOCKED, "UNLOCKED"), \
			       (lp), __FILE__, __LINE__)); \
	} while (0)
#define ISLOCKED(lp) (1)
#define DESTROYLOCK(lp) \
	RUNTIME_CHECK(isc_mutex_destroy((lp)) == ISC_R_SUCCESS)


#define BROADCAST(cvp) do { \
	ISC_UTIL_TRACE(fprintf(stderr, "%s %p %s %d\n", \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_BROADCAST, "BROADCAST"),\
			       (cvp), __FILE__, __LINE__)); \
	RUNTIME_CHECK(isc_condition_broadcast((cvp)) == ISC_R_SUCCESS); \
	} while (0)
#define SIGNAL(cvp) do { \
	ISC_UTIL_TRACE(fprintf(stderr, "%s %p %s %d\n", \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_SIGNAL, "SIGNAL"), \
			       (cvp), __FILE__, __LINE__)); \
	RUNTIME_CHECK(isc_condition_signal((cvp)) == ISC_R_SUCCESS); \
	} while (0)
#define WAIT(cvp, lp) do { \
	ISC_UTIL_TRACE(fprintf(stderr, "%s %p %s %p %s %d\n", \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_UTILWAIT, "WAIT"), \
			       (cvp), \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_LOCK, "LOCK"), \
			       (lp), __FILE__, __LINE__)); \
	RUNTIME_CHECK(isc_condition_wait((cvp), (lp)) == ISC_R_SUCCESS); \
	ISC_UTIL_TRACE(fprintf(stderr, "%s %p %s %p %s %d\n", \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_WAITED, "WAITED"), \
			       (cvp), \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_LOCKED, "LOCKED"), \
			       (lp), __FILE__, __LINE__)); \
	} while (0)

/*
 * isc_condition_waituntil can return ISC_R_TIMEDOUT, so we
 * don't RUNTIME_CHECK the result.
 *
 *  XXX Also, can't really debug this then...
 */

#define WAITUNTIL(cvp, lp, tp) \
	isc_condition_waituntil((cvp), (lp), (tp))

#define RWLOCK(lp, t) do { \
	ISC_UTIL_TRACE(fprintf(stderr, "%s %p, %d %s %d\n", \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_RWLOCK, "RWLOCK"), \
			       (lp), (t), __FILE__, __LINE__)); \
	RUNTIME_CHECK(isc_rwlock_lock((lp), (t)) == ISC_R_SUCCESS); \
	ISC_UTIL_TRACE(fprintf(stderr, "%s %p, %d %s %d\n", \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_RWLOCKED, "RWLOCKED"), \
			       (lp), (t), __FILE__, __LINE__)); \
	} while (0)
#define RWUNLOCK(lp, t) do { \
	ISC_UTIL_TRACE(fprintf(stderr, "%s %p, %d %s %d\n", \
			       isc_msgcat_get(isc_msgcat, ISC_MSGSET_UTIL, \
					      ISC_MSG_RWUNLOCK, "RWUNLOCK"), \
			       (lp), (t), __FILE__, __LINE__)); \
	RUNTIME_CHECK(isc_rwlock_unlock((lp), (t)) == ISC_R_SUCCESS); \
	} while (0)

#define DESTROYMUTEXBLOCK(bp, n) \
	RUNTIME_CHECK(isc_mutexblock_destroy((bp), (n)) == ISC_R_SUCCESS)

/*
 * List Macros.
 */
#include <isc/list.h>		/* Contractual promise. */

#define LIST(type)			ISC_LIST(type)
#define INIT_LIST(type)			ISC_LIST_INIT(type)
#define LINK(type)			ISC_LINK(type)
#define INIT_LINK(elt, link)		ISC_LINK_INIT(elt, link)
#define HEAD(list)			ISC_LIST_HEAD(list)
#define TAIL(list)			ISC_LIST_TAIL(list)
#define EMPTY(list)			ISC_LIST_EMPTY(list)
#define PREV(elt, link)			ISC_LIST_PREV(elt, link)
#define NEXT(elt, link)			ISC_LIST_NEXT(elt, link)
#define APPEND(list, elt, link)		ISC_LIST_APPEND(list, elt, link)
#define PREPEND(list, elt, link)	ISC_LIST_PREPEND(list, elt, link)
#define UNLINK(list, elt, link)		ISC_LIST_UNLINK(list, elt, link)
#define ENQUEUE(list, elt, link)	ISC_LIST_APPEND(list, elt, link)
#define DEQUEUE(list, elt, link)	ISC_LIST_UNLINK(list, elt, link)
#define INSERTBEFORE(li, b, e, ln)	ISC_LIST_INSERTBEFORE(li, b, e, ln)
#define INSERTAFTER(li, a, e, ln)	ISC_LIST_INSERTAFTER(li, a, e, ln)
#define APPENDLIST(list1, list2, link)	ISC_LIST_APPENDLIST(list1, list2, link)

/*
 * Assertions
 */
#include <isc/assertions.h>	/* Contractual promise. */

/*% Require Assertion */
#define REQUIRE(e)			ISC_REQUIRE(e)
/*% Ensure Assertion */
#define ENSURE(e)			ISC_ENSURE(e)
/*% Insist Assertion */
#define INSIST(e)			ISC_INSIST(e)
/*% Invariant Assertion */
#define INVARIANT(e)			ISC_INVARIANT(e)

/*
 * Errors
 */
#include <isc/error.h>		/* Contractual promise. */

/*% Unexpected Error */
#define UNEXPECTED_ERROR		isc_error_unexpected
/*% Fatal Error */
#define FATAL_ERROR			isc_error_fatal
/*% Runtime Check */
#define RUNTIME_CHECK(cond)		ISC_ERROR_RUNTIMECHECK(cond)

/*%
 * Time
 */
#define TIME_NOW(tp) 	RUNTIME_CHECK(isc_time_now((tp)) == ISC_R_SUCCESS)

#endif /* ISC_UTIL_H */