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 this 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 clearenv(void); 287 288 int daemon(int, int); 289 int daemonfd(int, int); 290 char *devname(__dev_t, __mode_t); 291 char *devname_r(__dev_t, __mode_t, char *, int); 292 char *fdevname(int); 293 char *fdevname_r(int, char *, int); 294 int getloadavg(double [], int); 295 const char * 296 getprogname(void); 297 298 int heapsort(void *, size_t, size_t, 299 int (* _Nonnull)(const void *, const void *)); 300 #ifdef __BLOCKS__ 301 int heapsort_b(void *, size_t, size_t, 302 int (^ _Nonnull)(const void *, const void *)); 303 void qsort_b(void *, size_t, size_t, 304 int (^ _Nonnull)(const void *, const void *)); 305 #endif 306 int l64a_r(long, char *, int); 307 int mergesort(void *, size_t, size_t, int (*)(const void *, const void *)); 308 #ifdef __BLOCKS__ 309 int mergesort_b(void *, size_t, size_t, int (^)(const void *, const void *)); 310 #endif 311 int mkostemp(char *, int); 312 int mkostemps(char *, int, int); 313 int mkostempsat(int, char *, int, int); 314 void qsort_r(void *, size_t, size_t, 315 int (*)(const void *, const void *, void *), void *); 316 int radixsort(const unsigned char **, int, const unsigned char *, 317 unsigned); 318 void *reallocarray(void *, size_t, size_t) __result_use_check 319 __alloc_size2(2, 3); 320 void *reallocf(void *, size_t) __result_use_check __alloc_size(2); 321 int rpmatch(const char *); 322 char *secure_getenv(const char *); 323 void setprogname(const char *); 324 int sradixsort(const unsigned char **, int, const unsigned char *, 325 unsigned); 326 void srandomdev(void); 327 long long 328 strtonum(const char *, long long, long long, const char **); 329 330 /* Deprecated interfaces, to be removed. */ 331 __int64_t 332 strtoq(const char *, char **, int); 333 __uint64_t 334 strtouq(const char *, char **, int); 335 336 /* 337 * In FreeBSD 14, the prototype of qsort_r() was modified to comply with 338 * POSIX. The standardized qsort_r()'s order of last two parameters was 339 * changed, and the comparator function is now taking thunk as its last 340 * parameter, and both are different from the ones expected by the historical 341 * FreeBSD qsort_r() interface. 342 * 343 * Apply a workaround where we explicitly link against the historical 344 * interface, qsort_r@FBSD_1.0, in case when qsort_r() is called with 345 * the last parameter with a function pointer that exactly matches the 346 * historical FreeBSD qsort_r() comparator signature, so applications 347 * written for the historical interface can continue to work without 348 * modification. 349 */ 350 #if defined(__generic) || defined(__cplusplus) 351 void __qsort_r_compat(void *, size_t, size_t, void *, 352 int (*)(void *, const void *, const void *)); 353 __sym_compat(qsort_r, __qsort_r_compat, FBSD_1.0); 354 #endif 355 #if defined(__generic) && !defined(__cplusplus) 356 #define qsort_r(base, nel, width, arg4, arg5) \ 357 __generic(arg5, int (*)(void *, const void *, const void *), \ 358 __qsort_r_compat, qsort_r)(base, nel, width, arg4, arg5) 359 #elif defined(__cplusplus) 360 __END_DECLS 361 extern "C++" { 362 static inline void qsort_r(void *base, size_t nmemb, size_t size, 363 void *thunk, int (*compar)(void *, const void *, const void *)) { 364 __qsort_r_compat(base, nmemb, size, thunk, compar); 365 } 366 } 367 __BEGIN_DECLS 368 #endif 369 370 extern char *suboptarg; /* getsubopt(3) external variable */ 371 #endif /* __BSD_VISIBLE */ 372 373 #if __EXT1_VISIBLE 374 375 #ifndef _RSIZE_T_DEFINED 376 #define _RSIZE_T_DEFINED 377 typedef size_t rsize_t; 378 #endif 379 380 #ifndef _ERRNO_T_DEFINED 381 #define _ERRNO_T_DEFINED 382 typedef int errno_t; 383 #endif 384 385 /* K.3.6 */ 386 typedef void (*constraint_handler_t)(const char * __restrict, 387 void * __restrict, errno_t); 388 /* K.3.6.1.1 */ 389 constraint_handler_t set_constraint_handler_s(constraint_handler_t handler); 390 /* K.3.6.1.2 */ 391 _Noreturn void abort_handler_s(const char * __restrict, void * __restrict, 392 errno_t); 393 /* K3.6.1.3 */ 394 void ignore_handler_s(const char * __restrict, void * __restrict, errno_t); 395 /* K.3.6.3.2 */ 396 errno_t qsort_s(void *, rsize_t, rsize_t, 397 int (*)(const void *, const void *, void *), void *); 398 #endif /* __EXT1_VISIBLE */ 399 400 __END_DECLS 401 __NULLABILITY_PRAGMA_POP 402 403 #endif /* !_STDLIB_H_ */ 404