2 * Copyright (c) 1999-2005, 2007, 2010-2011
3 * Todd C. Miller <Todd.Miller@courtesan.com>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 * Sponsored in part by the Defense Advanced Research Projects
18 * Agency (DARPA) and Air Force Research Laboratory, Air Force
19 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
24 #include <sys/types.h>
25 #include <sys/param.h>
34 #endif /* STDC_HEADERS */
36 # if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
40 #endif /* HAVE_STRING_H */
43 #endif /* HAVE_STRING_H */
44 #if defined(HAVE_MALLOC_H) && !defined(STDC_HEADERS)
46 #endif /* HAVE_MALLOC_H && !STDC_HEADERS */
47 #ifdef HAVE_INTTYPES_H
48 # include <inttypes.h>
55 #define DEFAULT_TEXT_DOMAIN "sudo"
59 * If there is no SIZE_MAX or SIZE_T_MAX we have to assume that size_t
60 * could be signed (as it is on SunOS 4.x). This just means that
61 * emalloc2() and erealloc3() cannot allocate huge amounts on such a
62 * platform but that is OK since sudo doesn't need to do so anyway.
66 # define SIZE_MAX SIZE_T_MAX
68 # define SIZE_MAX INT_MAX
69 # endif /* SIZE_T_MAX */
73 * emalloc() calls the system malloc(3) and exits with an error if
82 errorx2(1, _("internal error, tried to emalloc(0)"));
84 if ((ptr = malloc(size)) == NULL)
85 errorx2(1, _("unable to allocate memory"));
90 * emalloc2() allocates nmemb * size bytes and exits with an error
91 * if overflow would occur or if the system malloc(3) fails.
94 emalloc2(size_t nmemb, size_t size)
98 if (nmemb == 0 || size == 0)
99 errorx2(1, _("internal error, tried to emalloc2(0)"));
100 if (nmemb > SIZE_MAX / size)
101 errorx2(1, _("internal error, emalloc2() overflow"));
104 if ((ptr = malloc(size)) == NULL)
105 errorx2(1, _("unable to allocate memory"));
110 * ecalloc() allocates nmemb * size bytes and exits with an error
111 * if overflow would occur or if the system malloc(3) fails.
112 * On success, the allocated space is zero-filled.
115 ecalloc(size_t nmemb, size_t size)
119 if (nmemb == 0 || size == 0)
120 errorx2(1, _("internal error, tried to ecalloc(0)"));
122 if (nmemb > SIZE_MAX / size)
123 errorx2(1, _("internal error, ecalloc() overflow"));
126 if ((ptr = malloc(size)) == NULL)
127 errorx2(1, _("unable to allocate memory"));
128 memset(ptr, 0, size);
133 * erealloc() calls the system realloc(3) and exits with an error if
134 * realloc(3) fails. You can call erealloc() with a NULL pointer even
135 * if the system realloc(3) does not support this.
138 erealloc(void *ptr, size_t size)
142 errorx2(1, _("internal error, tried to erealloc(0)"));
144 ptr = ptr ? realloc(ptr, size) : malloc(size);
146 errorx2(1, _("unable to allocate memory"));
151 * erealloc3() realloc(3)s nmemb * size bytes and exits with an error
152 * if overflow would occur or if the system malloc(3)/realloc(3) fails.
153 * You can call erealloc() with a NULL pointer even if the system realloc(3)
154 * does not support this.
157 erealloc3(void *ptr, size_t nmemb, size_t size)
160 if (nmemb == 0 || size == 0)
161 errorx2(1, _("internal error, tried to erealloc3(0)"));
162 if (nmemb > SIZE_MAX / size)
163 errorx2(1, _("internal error, erealloc3() overflow"));
166 ptr = ptr ? realloc(ptr, size) : malloc(size);
168 errorx2(1, _("unable to allocate memory"));
174 * erecalloc() realloc(3)s nmemb * msize bytes and exits with an error
175 * if overflow would occur or if the system malloc(3)/realloc(3) fails.
176 * On success, the new space is zero-filled. You can call ereallocz()
177 * with a NULL pointer even if the system realloc(3) does not support this.
180 erecalloc(void *ptr, size_t onmemb, size_t nmemb, size_t msize)
184 if (nmemb == 0 || msize == 0)
185 errorx2(1, _("internal error, tried to erealloc3(0)"));
186 if (nmemb > SIZE_MAX / msize)
187 errorx2(1, _("internal error, erealloc3() overflow"));
189 size = nmemb * msize;
190 ptr = ptr ? realloc(ptr, size) : malloc(size);
192 errorx2(1, _("unable to allocate memory"));
193 if (nmemb > onmemb) {
194 size = (nmemb - onmemb) * msize;
195 memset((char *)ptr + (onmemb * msize), 0, size);
202 * estrdup() is like strdup(3) except that it exits with an error if
203 * malloc(3) fails. NOTE: unlike strdup(3), estrdup(NULL) is legal.
206 estrdup(const char *src)
213 dst = (char *) emalloc(len + 1);
214 (void) memcpy(dst, src, len);
221 * estrdup() is like strndup(3) except that it exits with an error if
222 * malloc(3) fails. NOTE: unlike strdup(3), estrdup(NULL) is legal.
225 estrndup(const char *src, size_t maxlen)
231 while (maxlen != 0 && src[len] != '\0') {
235 dst = (char *) emalloc(len + 1);
236 (void) memcpy(dst, src, len);
243 * easprintf() calls vasprintf() and exits with an error if vasprintf()
244 * returns -1 (out of memory).
247 easprintf(char **ret, const char *fmt, ...)
252 len = vasprintf(ret, fmt, ap);
256 errorx2(1, _("unable to allocate memory"));
261 * evasprintf() calls vasprintf() and exits with an error if vasprintf()
262 * returns -1 (out of memory).
265 evasprintf(char **ret, const char *format, va_list args)
269 if ((len = vasprintf(ret, format, args)) == -1)
270 errorx2(1, _("unable to allocate memory"));
275 * Wrapper for free(3) so we can depend on C89 semantics.