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