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
42typedef __size_t size_t;
43#define _SIZE_T_DECLARED
44#endif
45
46#ifndef __cplusplus
47#ifndef _WCHAR_T_DECLARED
48typedef ___wchar_t wchar_t;
49#define _WCHAR_T_DECLARED
50#endif
51#endif
52
53typedef struct {
54 int quot; /* quotient */
55 int rem; /* remainder */
56} div_t;
57
58typedef 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// zig patch: ssp/stdlib.h header was added in FreeBSD 15
73#if __FreeBSD_version >= 1500500
74#if !defined(_STANDALONE) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
75#include <ssp/stdlib.h>
76#endif
77#endif
78
79__BEGIN_DECLS
80#ifdef _XLOCALE_H_
81#include <xlocale/_stdlib.h>
82#endif
83extern int __mb_cur_max;
84extern int ___mb_cur_max(void);
85#define MB_CUR_MAX ((size_t)___mb_cur_max())
86
87_Noreturn void abort(void) __noexcept;
88int abs(int) __pure2;
89int atexit(void (* _Nonnull)(void)) __noexcept;
90double atof(const char *);
91int atoi(const char *);
92long atol(const char *);
93void *bsearch(const void *, const void *, size_t,
94 size_t, int (*)(const void * _Nonnull, const void *));
95void *calloc(size_t, size_t) __malloc_like __result_use_check
96 __alloc_size2(1, 2);
97div_t div(int, int) __pure2;
98_Noreturn void exit(int);
99void free(void *);
100char *getenv(const char *);
101#if __BSD_VISIBLE
102int getenv_r(const char *, char * _Nonnull, size_t);
103#endif
104long labs(long) __pure2;
105ldiv_t ldiv(long, long) __pure2;
106void *malloc(size_t) __malloc_like __result_use_check __alloc_size(1);
107int mblen(const char *, size_t);
108size_t mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
109int mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
110void qsort(void *, size_t, size_t,
111 int (* _Nonnull)(const void *, const void *));
112int rand(void);
113void *realloc(void *, size_t) __result_use_check __alloc_size(2);
114void srand(unsigned);
115double strtod(const char * __restrict, char ** __restrict);
116float strtof(const char * __restrict, char ** __restrict);
117long strtol(const char * __restrict, char ** __restrict, int);
118long double
119 strtold(const char * __restrict, char ** __restrict);
120unsigned long
121 strtoul(const char * __restrict, char ** __restrict, int);
122int system(const char *);
123int wctomb(char *, wchar_t);
124size_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 */
139typedef struct {
140 long long quot;
141 long long rem;
142} lldiv_t;
143
144/* LONGLONG */
145long long
146 atoll(const char *);
147/* LONGLONG */
148long long
149 llabs(long long) __pure2;
150/* LONGLONG */
151lldiv_t lldiv(long long, long long) __pure2;
152/* LONGLONG */
153long long
154 strtoll(const char * __restrict, char ** __restrict, int);
155/* LONGLONG */
156unsigned long long
157 strtoull(const char * __restrict, char ** __restrict, int);
158#endif /* __LONG_LONG_SUPPORTED */
159
160_Noreturn void _Exit(int) __noexcept;
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
167void * aligned_alloc(size_t, size_t) __malloc_like __alloc_align(1)
168 __alloc_size(2);
169int at_quick_exit(void (*)(void)) __noexcept;
170_Noreturn void
171 quick_exit(int) /* __noexcept -- not ready ABI issues? */;
172#endif /* __ISO_C_VISIBLE >= 2011 */
173/*
174 * Extensions made by POSIX relative to C.
175 */
176#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE
177char *realpath(const char * __restrict, char * __restrict);
178#endif
179#if __POSIX_VISIBLE >= 199506
180int rand_r(unsigned *); /* (TSF) */
181#endif
182#if __POSIX_VISIBLE >= 200112
183int posix_memalign(void **, size_t, size_t); /* (ADV) */
184int setenv(const char *, const char *, int);
185int unsetenv(const char *);
186#endif
187
188#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
189int getsubopt(char **, char *const *, char **);
190#ifndef _MKDTEMP_DECLARED
191char *mkdtemp(char *);
192#define _MKDTEMP_DECLARED
193#endif
194#ifndef _MKSTEMP_DECLARED
195int 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. */
208long a64l(const char *);
209double drand48(void);
210/* char *ecvt(double, int, int * __restrict, int * __restrict); */
211double erand48(unsigned short[3]);
212/* char *fcvt(double, int, int * __restrict, int * __restrict); */
213/* char *gcvt(double, int, int * __restrict, int * __restrict); */
214char *initstate(unsigned int, char *, size_t);
215long jrand48(unsigned short[3]);
216char *l64a(long);
217void lcong48(unsigned short[7]);
218long lrand48(void);
219#if !defined(_MKTEMP_DECLARED) && (__BSD_VISIBLE || __XSI_VISIBLE <= 600)
220char *mktemp(char *);
221#define _MKTEMP_DECLARED
222#endif
223long mrand48(void);
224long nrand48(unsigned short[3]);
225int putenv(char *);
226long random(void);
227unsigned short
228 *seed48(unsigned short[3]);
229char *setstate(/* const */ char *);
230void srand48(long);
231void srandom(unsigned int);
232#endif /* __XSI_VISIBLE */
233
234#if __XSI_VISIBLE
235int grantpt(int);
236int posix_openpt(int);
237char *ptsname(int);
238int unlockpt(int);
239#endif /* __XSI_VISIBLE */
240#if __BSD_VISIBLE
241/* ptsname_r will be included in POSIX issue 8 */
242int ptsname_r(int, char *, size_t);
243#endif
244
245#if __BSD_VISIBLE
246extern const char *malloc_conf;
247extern 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
261void abort2(const char *, int, void **) __dead2;
262__uint32_t
263 arc4random(void);
264void arc4random_buf(void *, size_t);
265__uint32_t
266 arc4random_uniform(__uint32_t);
267
268#ifdef __BLOCKS__
269int atexit_b(void (^ _Nonnull)(void));
270void *bsearch_b(const void *, const void *, size_t,
271 size_t, int (^ _Nonnull)(const void *, const void *));
272#endif
273char *getbsize(int *, long *);
274 /* getcap(3) functions */
275char *cgetcap(char *, const char *, int);
276int cgetclose(void);
277int cgetent(char **, char **, const char *);
278int cgetfirst(char **, char **);
279int cgetmatch(const char *, const char *);
280int cgetnext(char **, char **);
281int cgetnum(char *, const char *, long *);
282int cgetset(const char *);
283int cgetstr(char *, const char *, char **);
284int cgetustr(char *, const char *, char **);
285
286int clearenv(void);
287
288int daemon(int, int);
289int daemonfd(int, int);
290char *devname(__dev_t, __mode_t);
291char *devname_r(__dev_t, __mode_t, char *, int);
292char *fdevname(int);
293char *fdevname_r(int, char *, int);
294int getloadavg(double [], int);
295const char *
296 getprogname(void);
297
298int heapsort(void *, size_t, size_t,
299 int (* _Nonnull)(const void *, const void *));
300#ifdef __BLOCKS__
301int heapsort_b(void *, size_t, size_t,
302 int (^ _Nonnull)(const void *, const void *));
303void qsort_b(void *, size_t, size_t,
304 int (^ _Nonnull)(const void *, const void *));
305#endif
306int l64a_r(long, char *, int);
307int mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
308#ifdef __BLOCKS__
309int mergesort_b(void *, size_t, size_t, int (^)(const void *, const void *));
310#endif
311int mkostemp(char *, int);
312int mkostemps(char *, int, int);
313int mkostempsat(int, char *, int, int);
314void qsort_r(void *, size_t, size_t,
315 int (*)(const void *, const void *, void *), void *);
316int radixsort(const unsigned char **, int, const unsigned char *,
317 unsigned);
318void *reallocarray(void *, size_t, size_t) __result_use_check
319 __alloc_size2(2, 3);
320void *reallocf(void *, size_t) __result_use_check __alloc_size(2);
321int rpmatch(const char *);
322char *secure_getenv(const char *);
323void setprogname(const char *);
324int sradixsort(const unsigned char **, int, const unsigned char *,
325 unsigned);
326void srandomdev(void);
327long 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 interface,
344 * qsort_r@FBSD_1.0, in case when qsort_r() is called with the last parameter
345 * with a function pointer that exactly matches the historical FreeBSD qsort_r()
346 * comparator signature, so applications written for the historical interface
347 * can continue to work without modification. Toolchains that don't support
348 * symbol versioning don't define __sym_compat, so only provide this symbol in
349 * supported environments.
350 */
351#ifdef __sym_compat
352#if defined(__generic) || defined(__cplusplus)
353void __qsort_r_compat(void *, size_t, size_t, void *,
354 int (*)(void *, const void *, const void *));
355__sym_compat(qsort_r, __qsort_r_compat, FBSD_1.0);
356#endif
357#endif
358#if defined(__generic) && !defined(__cplusplus)
359#define qsort_r(base, nel, width, arg4, arg5) \
360 __generic(arg5, int (*)(void *, const void *, const void *), \
361 __qsort_r_compat, qsort_r)(base, nel, width, arg4, arg5)
362#elif defined(__cplusplus) && defined(__sym_compat)
363__END_DECLS
364extern "C++" {
365static inline void qsort_r(void *base, size_t nmemb, size_t size,
366 void *thunk, int (*compar)(void *, const void *, const void *)) {
367 __qsort_r_compat(base, nmemb, size, thunk, compar);
368}
369}
370__BEGIN_DECLS
371#endif
372
373extern char *suboptarg; /* getsubopt(3) external variable */
374#endif /* __BSD_VISIBLE */
375
376#if __EXT1_VISIBLE
377
378#ifndef _RSIZE_T_DEFINED
379#define _RSIZE_T_DEFINED
380typedef size_t rsize_t;
381#endif
382
383#ifndef _ERRNO_T_DEFINED
384#define _ERRNO_T_DEFINED
385typedef int errno_t;
386#endif
387
388/* K.3.6 */
389typedef void (*constraint_handler_t)(const char * __restrict,
390 void * __restrict, errno_t);
391/* K.3.6.1.1 */
392constraint_handler_t set_constraint_handler_s(constraint_handler_t handler);
393/* K.3.6.1.2 */
394_Noreturn void abort_handler_s(const char * __restrict, void * __restrict,
395 errno_t);
396/* K3.6.1.3 */
397void ignore_handler_s(const char * __restrict, void * __restrict, errno_t);
398/* K.3.6.3.2 */
399errno_t qsort_s(void *, rsize_t, rsize_t,
400 int (*)(const void *, const void *, void *), void *);
401#endif /* __EXT1_VISIBLE */
402
403__END_DECLS
404__NULLABILITY_PRAGMA_POP
405
406#endif /* !_STDLIB_H_ */