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 */ 33 34 #ifndef _STDLIB_H_ 35 #define _STDLIB_H_ 36 37 #include <sys/cdefs.h> 38 #include <sys/_null.h> 39 #include <sys/_types.h> 40 41 __NULLABILITY_PRAGMA_PUSH 42 43 #if __BSD_VISIBLE 44 #ifndef _RUNE_T_DECLARED 45 typedef __rune_t rune_t; 46 #define _RUNE_T_DECLARED 47 #endif 48 #endif 49 50 #ifndef _SIZE_T_DECLARED 51 typedef __size_t size_t; 52 #define _SIZE_T_DECLARED 53 #endif 54 55 #ifndef __cplusplus 56 #ifndef _WCHAR_T_DECLARED 57 typedef ___wchar_t wchar_t; 58 #define _WCHAR_T_DECLARED 59 #endif 60 #endif 61 62 typedef struct { 63 int quot; /* quotient */ 64 int rem; /* remainder */ 65 } div_t; 66 67 typedef struct { 68 long quot; 69 long rem; 70 } ldiv_t; 71 72 #define EXIT_FAILURE 1 73 #define EXIT_SUCCESS 0 74 75 /* 76 * I.e., INT_MAX; rand(3) returns a signed integer but must produce output in 77 * the range [0, RAND_MAX], so half of the possible output range is unused. 78 */ 79 #define RAND_MAX 0x7fffffff 80 81 __BEGIN_DECLS 82 #ifdef _XLOCALE_H_ 83 #include <xlocale/_stdlib.h> 84 #endif 85 extern int __mb_cur_max; 86 extern int ___mb_cur_max(void); 87 #define MB_CUR_MAX ((size_t)___mb_cur_max()) 88 89 _Noreturn void abort(void); 90 int abs(int) __pure2; 91 int atexit(void (* _Nonnull)(void)); 92 double atof(const char *); 93 int atoi(const char *); 94 long atol(const char *); 95 void *bsearch(const void *, const void *, size_t, 96 size_t, int (*)(const void * _Nonnull, const void *)); 97 void *calloc(size_t, size_t) __malloc_like __result_use_check 98 __alloc_size2(1, 2); 99 div_t div(int, int) __pure2; 100 _Noreturn void exit(int); 101 void free(void *); 102 char *getenv(const char *); 103 long labs(long) __pure2; 104 ldiv_t ldiv(long, long) __pure2; 105 void *malloc(size_t) __malloc_like __result_use_check __alloc_size(1); 106 int mblen(const char *, size_t); 107 size_t mbstowcs(wchar_t * __restrict , const char * __restrict, size_t); 108 int mbtowc(wchar_t * __restrict, const char * __restrict, size_t); 109 void qsort(void *, size_t, size_t, 110 int (* _Nonnull)(const void *, const void *)); 111 int rand(void); 112 void *realloc(void *, size_t) __result_use_check __alloc_size(2); 113 void srand(unsigned); 114 double strtod(const char * __restrict, char ** __restrict); 115 float strtof(const char * __restrict, char ** __restrict); 116 long strtol(const char * __restrict, char ** __restrict, int); 117 long double 118 strtold(const char * __restrict, char ** __restrict); 119 unsigned long 120 strtoul(const char * __restrict, char ** __restrict, int); 121 int system(const char *); 122 int wctomb(char *, wchar_t); 123 size_t wcstombs(char * __restrict, const wchar_t * __restrict, size_t); 124 125 /* 126 * Functions added in C99 which we make conditionally available in the 127 * BSD^C89 namespace if the compiler supports `long long'. 128 * The #if test is more complicated than it ought to be because 129 * __BSD_VISIBLE implies __ISO_C_VISIBLE == 1999 *even if* `long long' 130 * is not supported in the compilation environment (which therefore means 131 * that it can't really be ISO C99). 132 * 133 * (The only other extension made by C99 in this header is _Exit().) 134 */ 135 #if __ISO_C_VISIBLE >= 1999 || defined(__cplusplus) 136 #ifdef __LONG_LONG_SUPPORTED 137 /* LONGLONG */ 138 typedef struct { 139 long long quot; 140 long long rem; 141 } lldiv_t; 142 143 /* LONGLONG */ 144 long long 145 atoll(const char *); 146 /* LONGLONG */ 147 long long 148 llabs(long long) __pure2; 149 /* LONGLONG */ 150 lldiv_t lldiv(long long, long long) __pure2; 151 /* LONGLONG */ 152 long long 153 strtoll(const char * __restrict, char ** __restrict, int); 154 /* LONGLONG */ 155 unsigned long long 156 strtoull(const char * __restrict, char ** __restrict, int); 157 #endif /* __LONG_LONG_SUPPORTED */ 158 159 _Noreturn void _Exit(int); 160 #endif /* __ISO_C_VISIBLE >= 1999 */ 161 162 /* 163 * If we're in a mode greater than C99, expose C11 functions. 164 */ 165 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 166 void * aligned_alloc(size_t, size_t) __malloc_like __alloc_align(1) 167 __alloc_size(2); 168 int at_quick_exit(void (*)(void)); 169 _Noreturn void 170 quick_exit(int); 171 #endif /* __ISO_C_VISIBLE >= 2011 */ 172 /* 173 * Extensions made by POSIX relative to C. 174 */ 175 #if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE 176 char *realpath(const char * __restrict, char * __restrict); 177 #endif 178 #if __POSIX_VISIBLE >= 199506 179 int rand_r(unsigned *); /* (TSF) */ 180 #endif 181 #if __POSIX_VISIBLE >= 200112 182 int posix_memalign(void **, size_t, size_t); /* (ADV) */ 183 int setenv(const char *, const char *, int); 184 int unsetenv(const char *); 185 #endif 186 187 #if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE 188 int getsubopt(char **, char *const *, char **); 189 #ifndef _MKDTEMP_DECLARED 190 char *mkdtemp(char *); 191 #define _MKDTEMP_DECLARED 192 #endif 193 #ifndef _MKSTEMP_DECLARED 194 int mkstemp(char *); 195 #define _MKSTEMP_DECLARED 196 #endif 197 #endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */ 198 199 /* 200 * The only changes to the XSI namespace in revision 6 were the deletion 201 * of the ttyslot() and valloc() functions, which FreeBSD never declared 202 * in this header. For revision 7, ecvt(), fcvt(), and gcvt(), which 203 * FreeBSD also does not have, and mktemp(), are to be deleted. 204 */ 205 #if __XSI_VISIBLE 206 /* XXX XSI requires pollution from <sys/wait.h> here. We'd rather not. */ 207 long a64l(const char *); 208 double drand48(void); 209 /* char *ecvt(double, int, int * __restrict, int * __restrict); */ 210 double erand48(unsigned short[3]); 211 /* char *fcvt(double, int, int * __restrict, int * __restrict); */ 212 /* char *gcvt(double, int, int * __restrict, int * __restrict); */ 213 char *initstate(unsigned int, char *, size_t); 214 long jrand48(unsigned short[3]); 215 char *l64a(long); 216 void lcong48(unsigned short[7]); 217 long lrand48(void); 218 #if !defined(_MKTEMP_DECLARED) && (__BSD_VISIBLE || __XSI_VISIBLE <= 600) 219 char *mktemp(char *); 220 #define _MKTEMP_DECLARED 221 #endif 222 long mrand48(void); 223 long nrand48(unsigned short[3]); 224 int putenv(char *); 225 long random(void); 226 unsigned short 227 *seed48(unsigned short[3]); 228 char *setstate(/* const */ char *); 229 void srand48(long); 230 void srandom(unsigned int); 231 #endif /* __XSI_VISIBLE */ 232 233 #if __XSI_VISIBLE 234 int grantpt(int); 235 int posix_openpt(int); 236 char *ptsname(int); 237 int unlockpt(int); 238 #endif /* __XSI_VISIBLE */ 239 #if __BSD_VISIBLE 240 /* ptsname_r will be included in POSIX issue 8 */ 241 int ptsname_r(int, char *, size_t); 242 #endif 243 244 #if __BSD_VISIBLE 245 extern const char *malloc_conf; 246 extern void (*malloc_message)(void *, const char *); 247 248 /* 249 * The alloca() function can't be implemented in C, and on some 250 * platforms it can't be implemented at all as a callable function. 251 * The GNU C compiler provides a built-in alloca() which we can use. 252 * On platforms where alloca() is not in libc, programs which use it 253 * will fail to link when compiled with non-GNU compilers. 254 */ 255 #if __GNUC__ >= 2 256 #undef alloca /* some GNU bits try to get cute and define this on their own */ 257 #define alloca(sz) __builtin_alloca(sz) 258 #endif 259 260 void abort2(const char *, int, void **) __dead2; 261 __uint32_t 262 arc4random(void); 263 void arc4random_buf(void *, size_t); 264 __uint32_t 265 arc4random_uniform(__uint32_t); 266 267 #ifdef __BLOCKS__ 268 int atexit_b(void (^ _Nonnull)(void)); 269 void *bsearch_b(const void *, const void *, size_t, 270 size_t, int (^ _Nonnull)(const void *, const void *)); 271 #endif 272 char *getbsize(int *, long *); 273 /* getcap(3) functions */ 274 char *cgetcap(char *, const char *, int); 275 int cgetclose(void); 276 int cgetent(char **, char **, const char *); 277 int cgetfirst(char **, char **); 278 int cgetmatch(const char *, const char *); 279 int cgetnext(char **, char **); 280 int cgetnum(char *, const char *, long *); 281 int cgetset(const char *); 282 int cgetstr(char *, const char *, char **); 283 int cgetustr(char *, const char *, char **); 284 285 int clearenv(void); 286 287 int daemon(int, int); 288 int daemonfd(int, int); 289 char *devname(__dev_t, __mode_t); 290 char *devname_r(__dev_t, __mode_t, char *, int); 291 char *fdevname(int); 292 char *fdevname_r(int, char *, int); 293 int getloadavg(double [], int); 294 const char * 295 getprogname(void); 296 297 int heapsort(void *, size_t, size_t, 298 int (* _Nonnull)(const void *, const void *)); 299 #ifdef __BLOCKS__ 300 int heapsort_b(void *, size_t, size_t, 301 int (^ _Nonnull)(const void *, const void *)); 302 void qsort_b(void *, size_t, size_t, 303 int (^ _Nonnull)(const void *, const void *)); 304 #endif 305 int l64a_r(long, char *, int); 306 int mergesort(void *, size_t, size_t, int (*)(const void *, const void *)); 307 #ifdef __BLOCKS__ 308 int mergesort_b(void *, size_t, size_t, int (^)(const void *, const void *)); 309 #endif 310 int mkostemp(char *, int); 311 int mkostemps(char *, int, int); 312 int mkostempsat(int, char *, int, int); 313 void qsort_r(void *, size_t, size_t, 314 int (*)(const void *, const void *, void *), void *); 315 int radixsort(const unsigned char **, int, const unsigned char *, 316 unsigned); 317 void *reallocarray(void *, size_t, size_t) __result_use_check 318 __alloc_size2(2, 3); 319 void *reallocf(void *, size_t) __result_use_check __alloc_size(2); 320 int rpmatch(const char *); 321 char *secure_getenv(const char *); 322 void setprogname(const char *); 323 int sradixsort(const unsigned char **, int, const unsigned char *, 324 unsigned); 325 void srandomdev(void); 326 long long 327 strtonum(const char *, long long, long long, const char **); 328 329 /* Deprecated interfaces, to be removed. */ 330 __int64_t 331 strtoq(const char *, char **, int); 332 __uint64_t 333 strtouq(const char *, char **, int); 334 335 /* 336 * In FreeBSD 14, the prototype of qsort_r() was modified to comply with 337 * POSIX. The standardized qsort_r()'s order of last two parameters was 338 * changed, and the comparator function is now taking thunk as its last 339 * parameter, and both are different from the ones expected by the historical 340 * FreeBSD qsort_r() interface. 341 * 342 * Apply a workaround where we explicitly link against the historical 343 * interface, qsort_r@FBSD_1.0, in case when qsort_r() is called with 344 * the last parameter with a function pointer that exactly matches the 345 * historical FreeBSD qsort_r() comparator signature, so applications 346 * written for the historical interface can continue to work without 347 * modification. 348 */ 349 #if defined(__generic) || defined(__cplusplus) 350 void __qsort_r_compat(void *, size_t, size_t, void *, 351 int (*)(void *, const void *, const void *)); 352 __sym_compat(qsort_r, __qsort_r_compat, FBSD_1.0); 353 #endif 354 #if defined(__generic) && !defined(__cplusplus) 355 #define qsort_r(base, nel, width, arg4, arg5) \ 356 __generic(arg5, int (*)(void *, const void *, const void *), \ 357 __qsort_r_compat, qsort_r)(base, nel, width, arg4, arg5) 358 #elif defined(__cplusplus) 359 __END_DECLS 360 extern "C++" { 361 static inline void qsort_r(void *base, size_t nmemb, size_t size, 362 void *thunk, int (*compar)(void *, const void *, const void *)) { 363 __qsort_r_compat(base, nmemb, size, thunk, compar); 364 } 365 } 366 __BEGIN_DECLS 367 #endif 368 369 extern char *suboptarg; /* getsubopt(3) external variable */ 370 #endif /* __BSD_VISIBLE */ 371 372 #if __EXT1_VISIBLE 373 374 #ifndef _RSIZE_T_DEFINED 375 #define _RSIZE_T_DEFINED 376 typedef size_t rsize_t; 377 #endif 378 379 #ifndef _ERRNO_T_DEFINED 380 #define _ERRNO_T_DEFINED 381 typedef int errno_t; 382 #endif 383 384 /* K.3.6 */ 385 typedef void (*constraint_handler_t)(const char * __restrict, 386 void * __restrict, errno_t); 387 /* K.3.6.1.1 */ 388 constraint_handler_t set_constraint_handler_s(constraint_handler_t handler); 389 /* K.3.6.1.2 */ 390 _Noreturn void abort_handler_s(const char * __restrict, void * __restrict, 391 errno_t); 392 /* K3.6.1.3 */ 393 void ignore_handler_s(const char * __restrict, void * __restrict, errno_t); 394 /* K.3.6.3.2 */ 395 errno_t qsort_s(void *, rsize_t, rsize_t, 396 int (*)(const void *, const void *, void *), void *); 397 #endif /* __EXT1_VISIBLE */ 398 399 __END_DECLS 400 __NULLABILITY_PRAGMA_POP 401 402 #endif /* !_STDLIB_H_ */ 403