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