196b6346ba
setenv(3) by tracking the size of the memory allocated instead of using strlen() on the current value. Convert all calls to POSIX from historic BSD API: - unsetenv returns an int. - putenv takes a char * instead of const char *. - putenv no longer makes a copy of the input string. - errno is set appropriately for POSIX. Exceptions involve bad environ variable and internal initialization code. These both set errno to EFAULT. Several patches to base utilities to handle the POSIX changes from Andrey Chernov's previous commit. A few I re-wrote to use setenv() instead of putenv(). New regression module for tools/regression/environ to test these functions. It also can be used to test the performance. Bump __FreeBSD_version to 700050 due to API change. PR: kern/99826 Approved by: wes Approved by: re (kensmith)
288 lines
9.1 KiB
C
288 lines
9.1 KiB
C
/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)stdlib.h 8.5 (Berkeley) 5/19/95
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* $FreeBSD$
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*/
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#ifndef _STDLIB_H_
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#define _STDLIB_H_
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#include <sys/cdefs.h>
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#include <sys/_null.h>
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#include <sys/_types.h>
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#if __BSD_VISIBLE
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#ifndef _RUNE_T_DECLARED
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typedef __rune_t rune_t;
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#define _RUNE_T_DECLARED
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#endif
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#endif
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#ifndef _SIZE_T_DECLARED
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typedef __size_t size_t;
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#define _SIZE_T_DECLARED
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#endif
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#ifndef __cplusplus
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#ifndef _WCHAR_T_DECLARED
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typedef __wchar_t wchar_t;
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#define _WCHAR_T_DECLARED
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#endif
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#endif
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typedef struct {
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int quot; /* quotient */
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int rem; /* remainder */
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} div_t;
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typedef struct {
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long quot;
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long rem;
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} ldiv_t;
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#define EXIT_FAILURE 1
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#define EXIT_SUCCESS 0
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#define RAND_MAX 0x7fffffff
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extern int __mb_cur_max;
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#define MB_CUR_MAX __mb_cur_max
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__BEGIN_DECLS
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void abort(void) __dead2;
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void abort2(const char *, int, void **) __dead2;
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int abs(int) __pure2;
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int atexit(void (*)(void));
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double atof(const char *);
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int atoi(const char *);
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long atol(const char *);
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void *bsearch(const void *, const void *, size_t,
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size_t, int (*)(const void *, const void *));
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void *calloc(size_t, size_t);
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div_t div(int, int) __pure2;
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void exit(int) __dead2;
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void free(void *);
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char *getenv(const char *);
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long labs(long) __pure2;
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ldiv_t ldiv(long, long) __pure2;
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void *malloc(size_t);
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int mblen(const char *, size_t);
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size_t mbstowcs(wchar_t * __restrict , const char * __restrict, size_t);
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int mbtowc(wchar_t * __restrict, const char * __restrict, size_t);
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void qsort(void *, size_t, size_t,
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int (*)(const void *, const void *));
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int rand(void);
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void *realloc(void *, size_t);
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void srand(unsigned);
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double strtod(const char * __restrict, char ** __restrict);
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float strtof(const char * __restrict, char ** __restrict);
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long strtol(const char * __restrict, char ** __restrict, int);
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long double
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strtold(const char * __restrict, char ** __restrict);
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unsigned long
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strtoul(const char * __restrict, char ** __restrict, int);
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int system(const char *);
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int wctomb(char *, wchar_t);
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size_t wcstombs(char * __restrict, const wchar_t * __restrict, size_t);
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/*
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* Functions added in C99 which we make conditionally available in the
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* BSD^C89 namespace if the compiler supports `long long'.
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* The #if test is more complicated than it ought to be because
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* __BSD_VISIBLE implies __ISO_C_VISIBLE == 1999 *even if* `long long'
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* is not supported in the compilation environment (which therefore means
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* that it can't really be ISO C99).
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*
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* (The only other extension made by C99 in thie header is _Exit().)
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*/
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#if __ISO_C_VISIBLE >= 1999
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#ifdef __LONG_LONG_SUPPORTED
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/* LONGLONG */
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typedef struct {
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long long quot;
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long long rem;
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} lldiv_t;
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/* LONGLONG */
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long long
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atoll(const char *);
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/* LONGLONG */
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long long
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llabs(long long) __pure2;
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/* LONGLONG */
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lldiv_t lldiv(long long, long long) __pure2;
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/* LONGLONG */
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long long
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strtoll(const char * __restrict, char ** __restrict, int);
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/* LONGLONG */
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unsigned long long
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strtoull(const char * __restrict, char ** __restrict, int);
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#endif /* __LONG_LONG_SUPPORTED */
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void _Exit(int) __dead2;
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#endif /* __ISO_C_VISIBLE >= 1999 */
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/*
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* Extensions made by POSIX relative to C. We don't know yet which edition
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* of POSIX made these extensions, so assume they've always been there until
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* research can be done.
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*/
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#if __POSIX_VISIBLE /* >= ??? */
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int posix_memalign(void **, size_t, size_t); /* (ADV) */
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int rand_r(unsigned *); /* (TSF) */
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int setenv(const char *, const char *, int);
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int unsetenv(const char *);
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#endif
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/*
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* The only changes to the XSI namespace in revision 6 were the deletion
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* of the ttyslot() and valloc() functions, which FreeBSD never declared
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* in this header. For revision 7, ecvt(), fcvt(), and gcvt(), which
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* FreeBSD also does not have, and mktemp(), are to be deleted.
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*/
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#if __XSI_VISIBLE
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/* XXX XSI requires pollution from <sys/wait.h> here. We'd rather not. */
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long a64l(const char *);
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double drand48(void);
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/* char *ecvt(double, int, int * __restrict, int * __restrict); */
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double erand48(unsigned short[3]);
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/* char *fcvt(double, int, int * __restrict, int * __restrict); */
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/* char *gcvt(double, int, int * __restrict, int * __restrict); */
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int getsubopt(char **, char *const *, char **);
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int grantpt(int);
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char *initstate(unsigned long /* XSI requires u_int */, char *, long);
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long jrand48(unsigned short[3]);
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char *l64a(long);
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void lcong48(unsigned short[7]);
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long lrand48(void);
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#ifndef _MKSTEMP_DECLARED
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int mkstemp(char *);
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#define _MKSTEMP_DECLARED
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#endif
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#ifndef _MKTEMP_DECLARED
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char *mktemp(char *);
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#define _MKTEMP_DECLARED
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#endif
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long mrand48(void);
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long nrand48(unsigned short[3]);
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int posix_openpt(int);
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char *ptsname(int);
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int putenv(char *);
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long random(void);
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char *realpath(const char *, char resolved_path[]);
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unsigned short
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*seed48(unsigned short[3]);
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#ifndef _SETKEY_DECLARED
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int setkey(const char *);
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#define _SETKEY_DECLARED
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#endif
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char *setstate(/* const */ char *);
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void srand48(long);
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void srandom(unsigned long);
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int unlockpt(int);
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#endif /* __XSI_VISIBLE */
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#if __BSD_VISIBLE
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extern const char *_malloc_options;
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extern void (*_malloc_message)(const char *, const char *, const char *,
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const char *);
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/*
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* The alloca() function can't be implemented in C, and on some
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* platforms it can't be implemented at all as a callable function.
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* The GNU C compiler provides a built-in alloca() which we can use;
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* in all other cases, provide a prototype, mainly to pacify various
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* incarnations of lint. On platforms where alloca() is not in libc,
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* programs which use it will fail to link when compiled with non-GNU
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* compilers.
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*/
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#if __GNUC__ >= 2 || defined(__INTEL_COMPILER)
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#undef alloca /* some GNU bits try to get cute and define this on their own */
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#define alloca(sz) __builtin_alloca(sz)
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#elif defined(lint)
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void *alloca(size_t);
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#endif
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__uint32_t
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arc4random(void);
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void arc4random_addrandom(unsigned char *dat, int datlen);
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void arc4random_stir(void);
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char *getbsize(int *, long *);
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/* getcap(3) functions */
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char *cgetcap(char *, const char *, int);
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int cgetclose(void);
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int cgetent(char **, char **, const char *);
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int cgetfirst(char **, char **);
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int cgetmatch(const char *, const char *);
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int cgetnext(char **, char **);
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int cgetnum(char *, const char *, long *);
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int cgetset(const char *);
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int cgetstr(char *, const char *, char **);
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int cgetustr(char *, const char *, char **);
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int daemon(int, int);
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char *devname(__dev_t, __mode_t);
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char *devname_r(__dev_t, __mode_t, char *, int);
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int getloadavg(double [], int);
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__const char *
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getprogname(void);
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int heapsort(void *, size_t, size_t, int (*)(const void *, const void *));
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int l64a_r(long, char *, int);
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int mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
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void qsort_r(void *, size_t, size_t, void *,
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int (*)(void *, const void *, const void *));
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int radixsort(const unsigned char **, int, const unsigned char *,
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unsigned);
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void *reallocf(void *, size_t);
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int rpmatch(const char *);
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void setprogname(const char *);
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int sradixsort(const unsigned char **, int, const unsigned char *,
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unsigned);
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void sranddev(void);
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void srandomdev(void);
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long long
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strtonum(const char *, long long, long long, const char **);
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/* Deprecated interfaces, to be removed in FreeBSD 6.0. */
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__int64_t
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strtoq(const char *, char **, int);
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__uint64_t
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strtouq(const char *, char **, int);
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extern char *suboptarg; /* getsubopt(3) external variable */
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#endif /* __BSD_VISIBLE */
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__END_DECLS
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#endif /* !_STDLIB_H_ */
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