1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)stdlib.h 8.5 (Berkeley) 5/19/95 32 * $FreeBSD$ 33 */ 34 35 #ifndef _STDLIB_H_ 36 #define _STDLIB_H_ 37 38 #include <sys/cdefs.h> 39 #include <sys/_null.h> 40 #include <sys/_types.h> 41 42 __NULLABILITY_PRAGMA_PUSH 43 44 #if __BSD_VISIBLE 45 #ifndef _RUNE_T_DECLARED 46 typedef __rune_t rune_t; 47 #define _RUNE_T_DECLARED 48 #endif 49 #endif 50 51 #ifndef _SIZE_T_DECLARED 52 typedef __size_t size_t; 53 #define _SIZE_T_DECLARED 54 #endif 55 56 #ifndef __cplusplus 57 #ifndef _WCHAR_T_DECLARED 58 typedef ___wchar_t wchar_t; 59 #define _WCHAR_T_DECLARED 60 #endif 61 #endif 62 63 typedef struct { 64 int quot; /* quotient */ 65 int rem; /* remainder */ 66 } div_t; 67 68 typedef struct { 69 long quot; 70 long rem; 71 } ldiv_t; 72 73 #define EXIT_FAILURE 1 74 #define EXIT_SUCCESS 0 75 76 /* 77 * I.e., INT_MAX; rand(3) returns a signed integer but must produce output in 78 * the range [0, RAND_MAX], so half of the possible output range is unused. 79 */ 80 #define RAND_MAX 0x7fffffff 81 82 __BEGIN_DECLS 83 #ifdef _XLOCALE_H_ 84 #include <xlocale/_stdlib.h> 85 #endif 86 extern int __mb_cur_max; 87 extern int ___mb_cur_max(void); 88 #define MB_CUR_MAX ((size_t)___mb_cur_max()) 89 90 _Noreturn void abort(void); 91 int abs(int) __pure2; 92 int atexit(void (* _Nonnull)(void)); 93 double atof(const char *); 94 int atoi(const char *); 95 long atol(const char *); 96 void *bsearch(const void *, const void *, size_t, 97 size_t, int (*)(const void * _Nonnull, const void *)); 98 void *calloc(size_t, size_t) __malloc_like __result_use_check 99 __alloc_size2(1, 2); 100 div_t div(int, int) __pure2; 101 _Noreturn void exit(int); 102 void free(void *); 103 char *getenv(const char *); 104 long labs(long) __pure2; 105 ldiv_t ldiv(long, long) __pure2; 106 void *malloc(size_t) __malloc_like __result_use_check __alloc_size(1); 107 int mblen(const char *, size_t); 108 size_t mbstowcs(wchar_t * __restrict , const char * __restrict, size_t); 109 int mbtowc(wchar_t * __restrict, const char * __restrict, size_t); 110 void qsort(void *, size_t, size_t, 111 int (* _Nonnull)(const void *, const void *)); 112 int rand(void); 113 void *realloc(void *, size_t) __result_use_check __alloc_size(2); 114 void srand(unsigned); 115 double strtod(const char * __restrict, char ** __restrict); 116 float strtof(const char * __restrict, char ** __restrict); 117 long strtol(const char * __restrict, char ** __restrict, int); 118 long double 119 strtold(const char * __restrict, char ** __restrict); 120 unsigned long 121 strtoul(const char * __restrict, char ** __restrict, int); 122 int system(const char *); 123 int wctomb(char *, wchar_t); 124 size_t wcstombs(char * __restrict, const wchar_t * __restrict, size_t); 125 126 /* 127 * Functions added in C99 which we make conditionally available in the 128 * BSD^C89 namespace if the compiler supports `long long'. 129 * The #if test is more complicated than it ought to be because 130 * __BSD_VISIBLE implies __ISO_C_VISIBLE == 1999 *even if* `long long' 131 * is not supported in the compilation environment (which therefore means 132 * that it can't really be ISO C99). 133 * 134 * (The only other extension made by C99 in thie header is _Exit().) 135 */ 136 #if __ISO_C_VISIBLE >= 1999 || defined(__cplusplus) 137 #ifdef __LONG_LONG_SUPPORTED 138 /* LONGLONG */ 139 typedef struct { 140 long long quot; 141 long long rem; 142 } lldiv_t; 143 144 /* LONGLONG */ 145 long long 146 atoll(const char *); 147 /* LONGLONG */ 148 long long 149 llabs(long long) __pure2; 150 /* LONGLONG */ 151 lldiv_t lldiv(long long, long long) __pure2; 152 /* LONGLONG */ 153 long long 154 strtoll(const char * __restrict, char ** __restrict, int); 155 /* LONGLONG */ 156 unsigned long long 157 strtoull(const char * __restrict, char ** __restrict, int); 158 #endif /* __LONG_LONG_SUPPORTED */ 159 160 _Noreturn void _Exit(int); 161 #endif /* __ISO_C_VISIBLE >= 1999 */ 162 163 /* 164 * If we're in a mode greater than C99, expose C11 functions. 165 */ 166 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 167 void * aligned_alloc(size_t, size_t) __malloc_like __alloc_align(1) 168 __alloc_size(2); 169 int at_quick_exit(void (*)(void)); 170 _Noreturn void 171 quick_exit(int); 172 #endif /* __ISO_C_VISIBLE >= 2011 */ 173 /* 174 * Extensions made by POSIX relative to C. 175 */ 176 #if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE 177 char *realpath(const char * __restrict, char * __restrict); 178 #endif 179 #if __POSIX_VISIBLE >= 199506 180 int rand_r(unsigned *); /* (TSF) */ 181 #endif 182 #if __POSIX_VISIBLE >= 200112 183 int posix_memalign(void **, size_t, size_t); /* (ADV) */ 184 int setenv(const char *, const char *, int); 185 int unsetenv(const char *); 186 #endif 187 188 #if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE 189 int getsubopt(char **, char *const *, char **); 190 #ifndef _MKDTEMP_DECLARED 191 char *mkdtemp(char *); 192 #define _MKDTEMP_DECLARED 193 #endif 194 #ifndef _MKSTEMP_DECLARED 195 int mkstemp(char *); 196 #define _MKSTEMP_DECLARED 197 #endif 198 #endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */ 199 200 /* 201 * The only changes to the XSI namespace in revision 6 were the deletion 202 * of the ttyslot() and valloc() functions, which FreeBSD never declared 203 * in this header. For revision 7, ecvt(), fcvt(), and gcvt(), which 204 * FreeBSD also does not have, and mktemp(), are to be deleted. 205 */ 206 #if __XSI_VISIBLE 207 /* XXX XSI requires pollution from <sys/wait.h> here. We'd rather not. */ 208 long a64l(const char *); 209 double drand48(void); 210 /* char *ecvt(double, int, int * __restrict, int * __restrict); */ 211 double erand48(unsigned short[3]); 212 /* char *fcvt(double, int, int * __restrict, int * __restrict); */ 213 /* char *gcvt(double, int, int * __restrict, int * __restrict); */ 214 char *initstate(unsigned int, char *, size_t); 215 long jrand48(unsigned short[3]); 216 char *l64a(long); 217 void lcong48(unsigned short[7]); 218 long lrand48(void); 219 #if !defined(_MKTEMP_DECLARED) && (__BSD_VISIBLE || __XSI_VISIBLE <= 600) 220 char *mktemp(char *); 221 #define _MKTEMP_DECLARED 222 #endif 223 long mrand48(void); 224 long nrand48(unsigned short[3]); 225 int putenv(char *); 226 long random(void); 227 unsigned short 228 *seed48(unsigned short[3]); 229 char *setstate(/* const */ char *); 230 void srand48(long); 231 void srandom(unsigned int); 232 #endif /* __XSI_VISIBLE */ 233 234 #if __XSI_VISIBLE 235 int grantpt(int); 236 int posix_openpt(int); 237 char *ptsname(int); 238 int unlockpt(int); 239 #endif /* __XSI_VISIBLE */ 240 #if __BSD_VISIBLE 241 /* ptsname_r will be included in POSIX issue 8 */ 242 int ptsname_r(int, char *, size_t); 243 #endif 244 245 #if __BSD_VISIBLE 246 extern const char *malloc_conf; 247 extern void (*malloc_message)(void *, const char *); 248 249 /* 250 * The alloca() function can't be implemented in C, and on some 251 * platforms it can't be implemented at all as a callable function. 252 * The GNU C compiler provides a built-in alloca() which we can use. 253 * On platforms where alloca() is not in libc, programs which use it 254 * will fail to link when compiled with non-GNU compilers. 255 */ 256 #if __GNUC__ >= 2 257 #undef alloca /* some GNU bits try to get cute and define this on their own */ 258 #define alloca(sz) __builtin_alloca(sz) 259 #endif 260 261 void abort2(const char *, int, void **) __dead2; 262 __uint32_t 263 arc4random(void); 264 void arc4random_buf(void *, size_t); 265 __uint32_t 266 arc4random_uniform(__uint32_t); 267 268 #ifdef __BLOCKS__ 269 int atexit_b(void (^ _Nonnull)(void)); 270 void *bsearch_b(const void *, const void *, size_t, 271 size_t, int (^ _Nonnull)(const void *, const void *)); 272 #endif 273 char *getbsize(int *, long *); 274 /* getcap(3) functions */ 275 char *cgetcap(char *, const char *, int); 276 int cgetclose(void); 277 int cgetent(char **, char **, const char *); 278 int cgetfirst(char **, char **); 279 int cgetmatch(const char *, const char *); 280 int cgetnext(char **, char **); 281 int cgetnum(char *, const char *, long *); 282 int cgetset(const char *); 283 int cgetstr(char *, const char *, char **); 284 int cgetustr(char *, const char *, char **); 285 286 int daemon(int, int); 287 int daemonfd(int, int); 288 char *devname(__dev_t, __mode_t); 289 char *devname_r(__dev_t, __mode_t, char *, int); 290 char *fdevname(int); 291 char *fdevname_r(int, char *, int); 292 int getloadavg(double [], int); 293 const char * 294 getprogname(void); 295 296 int heapsort(void *, size_t, size_t, 297 int (* _Nonnull)(const void *, const void *)); 298 #ifdef __BLOCKS__ 299 int heapsort_b(void *, size_t, size_t, 300 int (^ _Nonnull)(const void *, const void *)); 301 void qsort_b(void *, size_t, size_t, 302 int (^ _Nonnull)(const void *, const void *)); 303 #endif 304 int l64a_r(long, char *, int); 305 int mergesort(void *, size_t, size_t, int (*)(const void *, const void *)); 306 #ifdef __BLOCKS__ 307 int mergesort_b(void *, size_t, size_t, int (^)(const void *, const void *)); 308 #endif 309 int mkostemp(char *, int); 310 int mkostemps(char *, int, int); 311 int mkostempsat(int, char *, int, int); 312 void qsort_r(void *, size_t, size_t, void *, 313 int (*)(void *, const void *, const void *)); 314 int radixsort(const unsigned char **, int, const unsigned char *, 315 unsigned); 316 void *reallocarray(void *, size_t, size_t) __result_use_check 317 __alloc_size2(2, 3); 318 void *reallocf(void *, size_t) __result_use_check __alloc_size(2); 319 int rpmatch(const char *); 320 void setprogname(const char *); 321 int sradixsort(const unsigned char **, int, const unsigned char *, 322 unsigned); 323 void srandomdev(void); 324 long long 325 strtonum(const char *, long long, long long, const char **); 326 327 /* Deprecated interfaces, to be removed. */ 328 __int64_t 329 strtoq(const char *, char **, int); 330 __uint64_t 331 strtouq(const char *, char **, int); 332 333 extern char *suboptarg; /* getsubopt(3) external variable */ 334 #endif /* __BSD_VISIBLE */ 335 336 #if __EXT1_VISIBLE 337 338 #ifndef _RSIZE_T_DEFINED 339 #define _RSIZE_T_DEFINED 340 typedef size_t rsize_t; 341 #endif 342 343 #ifndef _ERRNO_T_DEFINED 344 #define _ERRNO_T_DEFINED 345 typedef int errno_t; 346 #endif 347 348 /* K.3.6 */ 349 typedef void (*constraint_handler_t)(const char * __restrict, 350 void * __restrict, errno_t); 351 /* K.3.6.1.1 */ 352 constraint_handler_t set_constraint_handler_s(constraint_handler_t handler); 353 /* K.3.6.1.2 */ 354 _Noreturn void abort_handler_s(const char * __restrict, void * __restrict, 355 errno_t); 356 /* K3.6.1.3 */ 357 void ignore_handler_s(const char * __restrict, void * __restrict, errno_t); 358 /* K.3.6.3.2 */ 359 errno_t qsort_s(void *, rsize_t, rsize_t, 360 int (*)(const void *, const void *, void *), void *); 361 #endif /* __EXT1_VISIBLE */ 362 363 __END_DECLS 364 __NULLABILITY_PRAGMA_POP 365 366 #endif /* !_STDLIB_H_ */ 367