| /* |
| * 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 <sys/cdefs.h> |
| #include <stddef.h> |
| #include <xlocale.h> |
| |
| #include <bits/strcasecmp.h> |
| |
| __BEGIN_DECLS |
| |
| #if defined(__clang__) |
| #pragma clang diagnostic push |
| #pragma clang diagnostic ignored "-Wnullability-completeness" |
| #endif |
| |
| #if defined(__USE_BSD) |
| #include <strings.h> |
| #endif |
| |
| void* memccpy(void* _Nonnull __restrict, const void* _Nonnull __restrict, int, size_t); |
| void* memchr(const void* _Nonnull, int, size_t) __purefunc; |
| void* memrchr(const void* _Nonnull, int, size_t) __purefunc; |
| int memcmp(const void* _Nonnull, const void* _Nonnull, size_t) __purefunc; |
| void* memcpy(void* _Nonnull __restrict, const void* _Nonnull __restrict, size_t); |
| #if defined(__USE_GNU) |
| void* mempcpy(void* _Nonnull __restrict, const void* _Nonnull __restrict, size_t) __INTRODUCED_IN(23); |
| #endif |
| void* memmove(void* _Nonnull, const void* _Nonnull, size_t); |
| void* memset(void* _Nonnull, int, size_t); |
| void* memmem(const void* _Nonnull, size_t, const void* _Nonnull, size_t) __purefunc; |
| |
| char* strchr(const char* _Nonnull, int) __purefunc; |
| char* __strchr_chk(const char* _Nonnull, int, size_t) __INTRODUCED_IN(18); |
| #if defined(__USE_GNU) |
| #if defined(__cplusplus) |
| extern "C++" char* strchrnul(char* _Nonnull, int) __RENAME(strchrnul) __purefunc; |
| extern "C++" const char* strchrnul(const char* _Nonnull, int) __RENAME(strchrnul) __purefunc; |
| #else |
| char* strchrnul(const char* _Nonnull, int) __purefunc __INTRODUCED_IN(24); |
| #endif |
| #endif |
| |
| char* strrchr(const char* _Nonnull, int) __purefunc; |
| char* __strrchr_chk(const char* _Nonnull, int, size_t) __INTRODUCED_IN(18); |
| |
| size_t strlen(const char* _Nonnull) __purefunc; |
| size_t __strlen_chk(const char* _Nonnull, size_t) __INTRODUCED_IN(17); |
| int strcmp(const char* _Nonnull, const char* _Nonnull) __purefunc; |
| char* stpcpy(char* _Nonnull __restrict, const char* _Nonnull__restrict) __INTRODUCED_IN(21); |
| char* strcpy(char* _Nonnull __restrict, const char* _Nonnull __restrict); |
| char* strcat(char* _Nonnull __restrict, const char* _Nonnull __restrict); |
| |
| char* strdup(const char* _Nonnull); |
| |
| char* strstr(const char* _Nonnull, const char* _Nonnull) __purefunc; |
| char* strcasestr(const char* _Nonnull, const char* _Nonnull) __purefunc; |
| char* strtok(char* __restrict, const char* _Nonnull __restrict); |
| char* strtok_r(char* __restrict, const char* _Nonnull __restrict, char** _Nonnull __restrict); |
| |
| char* strerror(int); |
| char* strerror_l(int, locale_t) __INTRODUCED_IN(23); |
| #if defined(__USE_GNU) |
| char* strerror_r(int, char*, size_t) __RENAME(__gnu_strerror_r) __INTRODUCED_IN(23); |
| #else /* POSIX */ |
| int strerror_r(int, char*, size_t); |
| #endif |
| |
| size_t strnlen(const char* _Nonnull, size_t) __purefunc; |
| char* strncat(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t); |
| char* strndup(const char* _Nonnull, size_t); |
| int strncmp(const char* _Nonnull, const char* _Nonnull, size_t) __purefunc; |
| char* stpncpy(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t) __INTRODUCED_IN(21); |
| char* strncpy(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t); |
| |
| size_t strlcat(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t); |
| size_t strlcpy(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t); |
| |
| size_t strcspn(const char* _Nonnull, const char* _Nonnull) __purefunc; |
| char* strpbrk(const char* _Nonnull, const char* _Nonnull) __purefunc; |
| char* strsep(char** _Nonnull __restrict, const char* _Nonnull __restrict); |
| size_t strspn(const char* _Nonnull, const char* _Nonnull); |
| |
| char* strsignal(int); |
| |
| int strcoll(const char* _Nonnull, const char* _Nonnull) __purefunc; |
| size_t strxfrm(char* __restrict, const char* _Nonnull __restrict, size_t); |
| |
| int strcoll_l(const char* _Nonnull, const char* _Nonnull, locale_t) __purefunc __INTRODUCED_IN(21); |
| size_t strxfrm_l(char* __restrict, const char* _Nonnull __restrict, size_t, locale_t) __INTRODUCED_IN(21); |
| |
| #if defined(__USE_GNU) && !defined(basename) |
| /* |
| * glibc has a basename in <string.h> that's different to the POSIX one in <libgen.h>. |
| * It doesn't modify its argument, and in C++ it's const-correct. |
| */ |
| #if defined(__cplusplus) |
| extern "C++" char* basename(char* _Nonnull) __RENAME(__gnu_basename); |
| extern "C++" const char* basename(const char* _Nonnull) __RENAME(__gnu_basename); |
| #else |
| char* basename(const char* _Nonnull) __RENAME(__gnu_basename) __INTRODUCED_IN(23); |
| #endif |
| #endif |
| |
| void* __memchr_chk(const void* _Nonnull, int, size_t, size_t) __INTRODUCED_IN(23); |
| __errordecl(__memchr_buf_size_error, "memchr called with size bigger than buffer"); |
| |
| void* __memrchr_chk(const void* _Nonnull, int, size_t, size_t) __INTRODUCED_IN(23); |
| __errordecl(__memrchr_buf_size_error, "memrchr called with size bigger than buffer"); |
| void* __memrchr_real(const void* _Nonnull, int, size_t) __RENAME(memrchr); |
| |
| char* __stpncpy_chk2(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t, size_t, size_t) |
| __INTRODUCED_IN(21); |
| char* __strncpy_chk2(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t, size_t, size_t) |
| __INTRODUCED_IN(21); |
| size_t __strlcpy_real(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t) __RENAME(strlcpy); |
| size_t __strlcpy_chk(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t, size_t) __INTRODUCED_IN(17); |
| size_t __strlcat_real(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t) __RENAME(strlcat); |
| size_t __strlcat_chk(char* _Nonnull __restrict, const char* _Nonnull __restrict, size_t, size_t) __INTRODUCED_IN(17); |
| |
| #if defined(__BIONIC_FORTIFY) |
| |
| #if __ANDROID_API__ >= 23 |
| __BIONIC_FORTIFY_INLINE |
| void* memchr(const void* s, int c, size_t n) { |
| size_t bos = __bos(s); |
| |
| #if !defined(__clang__) |
| if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) { |
| return __builtin_memchr(s, c, n); |
| } |
| |
| if (__builtin_constant_p(n) && (n > bos)) { |
| __memchr_buf_size_error(); |
| } |
| |
| if (__builtin_constant_p(n) && (n <= bos)) { |
| return __builtin_memchr(s, c, n); |
| } |
| #endif |
| |
| return __memchr_chk(s, c, n, bos); |
| } |
| |
| __BIONIC_FORTIFY_INLINE |
| void* memrchr(const void* s, int c, size_t n) { |
| size_t bos = __bos(s); |
| |
| #if !defined(__clang__) |
| if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) { |
| return __memrchr_real(s, c, n); |
| } |
| |
| if (__builtin_constant_p(n) && (n > bos)) { |
| __memrchr_buf_size_error(); |
| } |
| |
| if (__builtin_constant_p(n) && (n <= bos)) { |
| return __memrchr_real(s, c, n); |
| } |
| #endif |
| |
| return __memrchr_chk(s, c, n, bos); |
| } |
| #endif /* __ANDROID_API__ >= 23 */ |
| |
| #if __ANDROID_API__ >= 17 |
| __BIONIC_FORTIFY_INLINE |
| void* memcpy(void* _Nonnull __restrict dst, const void* _Nonnull __restrict src, size_t copy_amount) { |
| return __builtin___memcpy_chk(dst, src, copy_amount, __bos0(dst)); |
| } |
| |
| __BIONIC_FORTIFY_INLINE |
| void* memmove(void* _Nonnull dst, const void* _Nonnull src, size_t len) { |
| return __builtin___memmove_chk(dst, src, len, __bos0(dst)); |
| } |
| #endif /* __ANDROID_API__ >= 17 */ |
| |
| #if __ANDROID_API__ >= 21 |
| __BIONIC_FORTIFY_INLINE |
| char* stpcpy(char* _Nonnull __restrict dst, const char* _Nonnull __restrict src) { |
| return __builtin___stpcpy_chk(dst, src, __bos(dst)); |
| } |
| #endif /* __ANDROID_API__ >= 21 */ |
| |
| #if __ANDROID_API__ >= 17 |
| __BIONIC_FORTIFY_INLINE |
| char* strcpy(char* _Nonnull __restrict dst, const char* _Nonnull __restrict src) { |
| return __builtin___strcpy_chk(dst, src, __bos(dst)); |
| } |
| #endif /* __ANDROID_API__ >= 17 */ |
| |
| #if __ANDROID_API__ >= 21 |
| __BIONIC_FORTIFY_INLINE |
| char* stpncpy(char* _Nonnull __restrict dst, const char* _Nonnull __restrict src, size_t n) { |
| size_t bos_dst = __bos(dst); |
| size_t bos_src = __bos(src); |
| |
| if (bos_src == __BIONIC_FORTIFY_UNKNOWN_SIZE) { |
| return __builtin___stpncpy_chk(dst, src, n, bos_dst); |
| } |
| |
| if (__builtin_constant_p(n) && (n <= bos_src)) { |
| return __builtin___stpncpy_chk(dst, src, n, bos_dst); |
| } |
| |
| size_t slen = __builtin_strlen(src); |
| if (__builtin_constant_p(slen)) { |
| return __builtin___stpncpy_chk(dst, src, n, bos_dst); |
| } |
| |
| return __stpncpy_chk2(dst, src, n, bos_dst, bos_src); |
| } |
| #endif /* __ANDROID_API__ >= 21 */ |
| |
| #if __ANDROID_API__ >= 17 |
| __BIONIC_FORTIFY_INLINE |
| char* strncpy(char* _Nonnull __restrict dst, const char* _Nonnull __restrict src, size_t n) { |
| size_t bos_dst = __bos(dst); |
| size_t bos_src = __bos(src); |
| |
| if (bos_src == __BIONIC_FORTIFY_UNKNOWN_SIZE) { |
| return __builtin___strncpy_chk(dst, src, n, bos_dst); |
| } |
| |
| if (__builtin_constant_p(n) && (n <= bos_src)) { |
| return __builtin___strncpy_chk(dst, src, n, bos_dst); |
| } |
| |
| size_t slen = __builtin_strlen(src); |
| if (__builtin_constant_p(slen)) { |
| return __builtin___strncpy_chk(dst, src, n, bos_dst); |
| } |
| |
| return __strncpy_chk2(dst, src, n, bos_dst, bos_src); |
| } |
| |
| __BIONIC_FORTIFY_INLINE |
| char* strcat(char* _Nonnull __restrict dst, const char* _Nonnull __restrict src) { |
| return __builtin___strcat_chk(dst, src, __bos(dst)); |
| } |
| |
| __BIONIC_FORTIFY_INLINE |
| char *strncat(char* _Nonnull __restrict dst, const char* _Nonnull __restrict src, size_t n) { |
| return __builtin___strncat_chk(dst, src, n, __bos(dst)); |
| } |
| |
| __BIONIC_FORTIFY_INLINE |
| void* memset(void* _Nonnull s, int c, size_t n) { |
| return __builtin___memset_chk(s, c, n, __bos0(s)); |
| } |
| |
| __BIONIC_FORTIFY_INLINE |
| size_t strlcpy(char* _Nonnull __restrict dst, const char* _Nonnull __restrict src, size_t size) { |
| size_t bos = __bos(dst); |
| |
| #if !defined(__clang__) |
| // Compiler doesn't know destination size. Don't call __strlcpy_chk |
| if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) { |
| return __strlcpy_real(dst, 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(dst, src, size); |
| } |
| #endif /* !defined(__clang__) */ |
| |
| return __strlcpy_chk(dst, src, size, bos); |
| } |
| |
| |
| __BIONIC_FORTIFY_INLINE |
| size_t strlcat(char* _Nonnull __restrict dst, const char* _Nonnull __restrict src, size_t size) { |
| size_t bos = __bos(dst); |
| |
| #if !defined(__clang__) |
| // Compiler doesn't know destination size. Don't call __strlcat_chk |
| if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) { |
| return __strlcat_real(dst, 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(dst, src, size); |
| } |
| #endif /* !defined(__clang__) */ |
| |
| return __strlcat_chk(dst, src, size, bos); |
| } |
| |
| __BIONIC_FORTIFY_INLINE |
| size_t strlen(const char* _Nonnull 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); |
| } |
| #endif /* __ANDROID_API__ >= 17 */ |
| |
| #if __ANDROID_API__ >= 18 |
| __BIONIC_FORTIFY_INLINE |
| char* strchr(const char* _Nonnull 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* _Nonnull 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 /* __ANDROID_API__ >= 18 */ |
| |
| #endif /* defined(__BIONIC_FORTIFY) */ |
| |
| #if defined(__clang__) |
| #pragma clang diagnostic pop |
| #endif |
| |
| __END_DECLS |
| |
| #endif /* _STRING_H */ |