363 lines
12 KiB
C
363 lines
12 KiB
C
/*
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* Copyright (C) 2008 The Android Open Source Project
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* 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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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* 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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#ifndef _STRING_H
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#define _STRING_H
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#include <sys/cdefs.h>
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#include <stddef.h>
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#include <xlocale.h>
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__BEGIN_DECLS
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#if defined(__USE_BSD)
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#include <strings.h>
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#endif
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extern void* memccpy(void* __restrict, const void* __restrict, int, size_t);
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extern void* memchr(const void *, int, size_t) __purefunc;
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extern void* memrchr(const void *, int, size_t) __purefunc;
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extern int memcmp(const void *, const void *, size_t) __purefunc;
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extern void* memcpy(void* __restrict, const void* __restrict, size_t);
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#if defined(__USE_GNU)
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extern void* mempcpy(void* __restrict, const void* __restrict, size_t);
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#endif
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extern void* memmove(void *, const void *, size_t);
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extern void* memset(void *, int, size_t);
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extern void* memmem(const void *, size_t, const void *, size_t) __purefunc;
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extern char* strchr(const char *, int) __purefunc;
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extern char* __strchr_chk(const char *, int, size_t);
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extern char* strrchr(const char *, int) __purefunc;
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extern char* __strrchr_chk(const char *, int, size_t);
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extern size_t strlen(const char *) __purefunc;
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extern size_t __strlen_chk(const char *, size_t);
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extern int strcmp(const char *, const char *) __purefunc;
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extern char* stpcpy(char* __restrict, const char* __restrict);
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extern char* strcpy(char* __restrict, const char* __restrict);
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extern char* strcat(char* __restrict, const char* __restrict);
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int strcasecmp(const char*, const char*) __purefunc;
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int strcasecmp_l(const char*, const char*, locale_t) __purefunc;
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int strncasecmp(const char*, const char*, size_t) __purefunc;
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int strncasecmp_l(const char*, const char*, size_t, locale_t) __purefunc;
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extern char* strdup(const char *);
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extern char* strstr(const char *, const char *) __purefunc;
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extern char* strcasestr(const char *haystack, const char *needle) __purefunc;
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extern char* strtok(char* __restrict, const char* __restrict);
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extern char* strtok_r(char* __restrict, const char* __restrict, char** __restrict);
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extern char* strerror(int);
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extern char* strerror_l(int, locale_t);
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#if defined(__USE_GNU)
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extern char* strerror_r(int, char*, size_t) __RENAME(__gnu_strerror_r);
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#else /* POSIX */
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extern int strerror_r(int, char*, size_t);
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#endif
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extern size_t strnlen(const char *, size_t) __purefunc;
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extern char* strncat(char* __restrict, const char* __restrict, size_t);
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extern char* strndup(const char *, size_t);
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extern int strncmp(const char *, const char *, size_t) __purefunc;
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extern char* stpncpy(char* __restrict, const char* __restrict, size_t);
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extern char* strncpy(char* __restrict, const char* __restrict, size_t);
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extern size_t strlcat(char* __restrict, const char* __restrict, size_t);
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extern size_t strlcpy(char* __restrict, const char* __restrict, size_t);
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extern size_t strcspn(const char *, const char *) __purefunc;
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extern char* strpbrk(const char *, const char *) __purefunc;
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extern char* strsep(char** __restrict, const char* __restrict);
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extern size_t strspn(const char *, const char *);
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extern char* strsignal(int sig);
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extern int strcoll(const char *, const char *) __purefunc;
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extern size_t strxfrm(char* __restrict, const char* __restrict, size_t);
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extern int strcoll_l(const char *, const char *, locale_t) __purefunc;
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extern size_t strxfrm_l(char* __restrict, const char* __restrict, size_t, locale_t);
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#if defined(__USE_GNU) && !defined(__bionic_using_posix_basename)
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/*
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* glibc has a basename in <string.h> that's different to the POSIX one in <libgen.h>.
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* It doesn't modify its argument, and in C++ it's const-correct.
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*/
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#if defined(__cplusplus)
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extern "C++" char* basename(char*) __RENAME(__gnu_basename) __nonnull((1));
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extern "C++" const char* basename(const char*) __RENAME(__gnu_basename) __nonnull((1));
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#else
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extern char* basename(const char*) __RENAME(__gnu_basename) __nonnull((1));
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#endif
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#define __bionic_using_gnu_basename
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#endif
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extern void* __memchr_chk(const void*, int, size_t, size_t);
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__errordecl(__memchr_buf_size_error, "memchr called with size bigger than buffer");
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extern void* __memrchr_chk(const void*, int, size_t, size_t);
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__errordecl(__memrchr_buf_size_error, "memrchr called with size bigger than buffer");
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extern void* __memrchr_real(const void*, int, size_t) __RENAME(memrchr);
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extern char* __stpncpy_chk2(char* __restrict, const char* __restrict, size_t, size_t, size_t);
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extern char* __strncpy_chk2(char* __restrict, const char* __restrict, size_t, size_t, size_t);
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extern size_t __strlcpy_real(char* __restrict, const char* __restrict, size_t) __RENAME(strlcpy);
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extern size_t __strlcpy_chk(char *, const char *, size_t, size_t);
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extern size_t __strlcat_real(char* __restrict, const char* __restrict, size_t) __RENAME(strlcat);
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extern size_t __strlcat_chk(char* __restrict, const char* __restrict, size_t, size_t);
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#if defined(__BIONIC_FORTIFY)
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__BIONIC_FORTIFY_INLINE
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void* memchr(const void *s, int c, size_t n) {
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size_t bos = __bos(s);
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#if !defined(__clang__)
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if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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return __builtin_memchr(s, c, n);
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}
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if (__builtin_constant_p(n) && (n > bos)) {
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__memchr_buf_size_error();
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}
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if (__builtin_constant_p(n) && (n <= bos)) {
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return __builtin_memchr(s, c, n);
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}
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#endif
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return __memchr_chk(s, c, n, bos);
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}
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__BIONIC_FORTIFY_INLINE
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void* memrchr(const void *s, int c, size_t n) {
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size_t bos = __bos(s);
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#if !defined(__clang__)
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if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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return __memrchr_real(s, c, n);
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}
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if (__builtin_constant_p(n) && (n > bos)) {
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__memrchr_buf_size_error();
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}
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if (__builtin_constant_p(n) && (n <= bos)) {
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return __memrchr_real(s, c, n);
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}
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#endif
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return __memrchr_chk(s, c, n, bos);
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}
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__BIONIC_FORTIFY_INLINE
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void* memcpy(void* __restrict dest, const void* __restrict src, size_t copy_amount) {
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return __builtin___memcpy_chk(dest, src, copy_amount, __bos0(dest));
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}
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__BIONIC_FORTIFY_INLINE
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void* memmove(void *dest, const void *src, size_t len) {
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return __builtin___memmove_chk(dest, src, len, __bos0(dest));
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}
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__BIONIC_FORTIFY_INLINE
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char* stpcpy(char* __restrict dest, const char* __restrict src) {
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return __builtin___stpcpy_chk(dest, src, __bos(dest));
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}
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__BIONIC_FORTIFY_INLINE
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char* strcpy(char* __restrict dest, const char* __restrict src) {
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return __builtin___strcpy_chk(dest, src, __bos(dest));
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}
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__BIONIC_FORTIFY_INLINE
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char* stpncpy(char* __restrict dest, const char* __restrict src, size_t n) {
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size_t bos_dest = __bos(dest);
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size_t bos_src = __bos(src);
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if (bos_src == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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return __builtin___stpncpy_chk(dest, src, n, bos_dest);
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}
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if (__builtin_constant_p(n) && (n <= bos_src)) {
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return __builtin___stpncpy_chk(dest, src, n, bos_dest);
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}
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size_t slen = __builtin_strlen(src);
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if (__builtin_constant_p(slen)) {
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return __builtin___stpncpy_chk(dest, src, n, bos_dest);
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}
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return __stpncpy_chk2(dest, src, n, bos_dest, bos_src);
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}
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__BIONIC_FORTIFY_INLINE
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char* strncpy(char* __restrict dest, const char* __restrict src, size_t n) {
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size_t bos_dest = __bos(dest);
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size_t bos_src = __bos(src);
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if (bos_src == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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return __builtin___strncpy_chk(dest, src, n, bos_dest);
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}
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if (__builtin_constant_p(n) && (n <= bos_src)) {
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return __builtin___strncpy_chk(dest, src, n, bos_dest);
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}
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size_t slen = __builtin_strlen(src);
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if (__builtin_constant_p(slen)) {
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return __builtin___strncpy_chk(dest, src, n, bos_dest);
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}
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return __strncpy_chk2(dest, src, n, bos_dest, bos_src);
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}
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__BIONIC_FORTIFY_INLINE
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char* strcat(char* __restrict dest, const char* __restrict src) {
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return __builtin___strcat_chk(dest, src, __bos(dest));
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}
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__BIONIC_FORTIFY_INLINE
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char *strncat(char* __restrict dest, const char* __restrict src, size_t n) {
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return __builtin___strncat_chk(dest, src, n, __bos(dest));
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}
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__BIONIC_FORTIFY_INLINE
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void* memset(void *s, int c, size_t n) {
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return __builtin___memset_chk(s, c, n, __bos0(s));
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}
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__BIONIC_FORTIFY_INLINE
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size_t strlcpy(char* __restrict dest, const char* __restrict src, size_t size) {
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size_t bos = __bos(dest);
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#if !defined(__clang__)
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// Compiler doesn't know destination size. Don't call __strlcpy_chk
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if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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return __strlcpy_real(dest, src, size);
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}
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// Compiler can prove, at compile time, that the passed in size
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// is always <= the actual object size. Don't call __strlcpy_chk
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if (__builtin_constant_p(size) && (size <= bos)) {
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return __strlcpy_real(dest, src, size);
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}
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#endif /* !defined(__clang__) */
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return __strlcpy_chk(dest, src, size, bos);
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}
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__BIONIC_FORTIFY_INLINE
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size_t strlcat(char* __restrict dest, const char* __restrict src, size_t size) {
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size_t bos = __bos(dest);
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#if !defined(__clang__)
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// Compiler doesn't know destination size. Don't call __strlcat_chk
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if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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return __strlcat_real(dest, src, size);
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}
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// Compiler can prove, at compile time, that the passed in size
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// is always <= the actual object size. Don't call __strlcat_chk
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if (__builtin_constant_p(size) && (size <= bos)) {
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return __strlcat_real(dest, src, size);
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}
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#endif /* !defined(__clang__) */
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return __strlcat_chk(dest, src, size, bos);
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}
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__BIONIC_FORTIFY_INLINE
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size_t strlen(const char *s) {
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size_t bos = __bos(s);
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#if !defined(__clang__)
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// Compiler doesn't know destination size. Don't call __strlen_chk
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if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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return __builtin_strlen(s);
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}
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size_t slen = __builtin_strlen(s);
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if (__builtin_constant_p(slen)) {
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return slen;
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}
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#endif /* !defined(__clang__) */
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return __strlen_chk(s, bos);
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}
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__BIONIC_FORTIFY_INLINE
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char* strchr(const char *s, int c) {
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size_t bos = __bos(s);
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#if !defined(__clang__)
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// Compiler doesn't know destination size. Don't call __strchr_chk
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if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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return __builtin_strchr(s, c);
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}
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size_t slen = __builtin_strlen(s);
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if (__builtin_constant_p(slen) && (slen < bos)) {
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return __builtin_strchr(s, c);
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}
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#endif /* !defined(__clang__) */
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return __strchr_chk(s, c, bos);
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}
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__BIONIC_FORTIFY_INLINE
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char* strrchr(const char *s, int c) {
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size_t bos = __bos(s);
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#if !defined(__clang__)
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// Compiler doesn't know destination size. Don't call __strrchr_chk
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if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
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return __builtin_strrchr(s, c);
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}
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size_t slen = __builtin_strlen(s);
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if (__builtin_constant_p(slen) && (slen < bos)) {
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return __builtin_strrchr(s, c);
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}
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#endif /* !defined(__clang__) */
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return __strrchr_chk(s, c, bos);
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}
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#endif /* defined(__BIONIC_FORTIFY) */
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__END_DECLS
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#endif /* _STRING_H */
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