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