/* Checking macros for stdio functions. Copyright (C) 2004-2021 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ #ifndef _BITS_STDIO2_H #define _BITS_STDIO2_H 1 #ifndef _STDIO_H # error "Never include <bits/stdio2.h> directly; use <stdio.h> instead." #endif #ifdef __va_arg_pack __fortify_function int __NTH (sprintf (char *__restrict __s, const char *__restrict __fmt, ...)) { return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, __glibc_objsize (__s), __fmt, __va_arg_pack ()); } #elif !defined __cplusplus # define sprintf(str, ...) \ __builtin___sprintf_chk (str, __USE_FORTIFY_LEVEL - 1, \ __glibc_objsize (str), __VA_ARGS__) #endif __fortify_function int __NTH (vsprintf (char *__restrict __s, const char *__restrict __fmt, __gnuc_va_list __ap)) { return __builtin___vsprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, __glibc_objsize (__s), __fmt, __ap); } #if defined __USE_ISOC99 || defined __USE_UNIX98 # ifdef __va_arg_pack __fortify_function int __NTH (snprintf (char *__restrict __s, size_t __n, const char *__restrict __fmt, ...)) { return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, __glibc_objsize (__s), __fmt, __va_arg_pack ()); } # elif !defined __cplusplus # define snprintf(str, len, ...) \ __builtin___snprintf_chk (str, len, __USE_FORTIFY_LEVEL - 1, \ __glibc_objsize (str), __VA_ARGS__) # endif __fortify_function int __NTH (vsnprintf (char *__restrict __s, size_t __n, const char *__restrict __fmt, __gnuc_va_list __ap)) { return __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, __glibc_objsize (__s), __fmt, __ap); } #endif #if __USE_FORTIFY_LEVEL > 1 # ifdef __va_arg_pack __fortify_function int fprintf (FILE *__restrict __stream, const char *__restrict __fmt, ...) { return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } __fortify_function int printf (const char *__restrict __fmt, ...) { return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } # elif !defined __cplusplus # define printf(...) \ __printf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # define fprintf(stream, ...) \ __fprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # endif __fortify_function int vprintf (const char *__restrict __fmt, __gnuc_va_list __ap) { #ifdef __USE_EXTERN_INLINES return __vfprintf_chk (stdout, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); #else return __vprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __ap); #endif } __fortify_function int vfprintf (FILE *__restrict __stream, const char *__restrict __fmt, __gnuc_va_list __ap) { return __vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); } # ifdef __USE_XOPEN2K8 # ifdef __va_arg_pack __fortify_function int dprintf (int __fd, const char *__restrict __fmt, ...) { return __dprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } # elif !defined __cplusplus # define dprintf(fd, ...) \ __dprintf_chk (fd, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # endif __fortify_function int vdprintf (int __fd, const char *__restrict __fmt, __gnuc_va_list __ap) { return __vdprintf_chk (__fd, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); } # endif # ifdef __USE_GNU # ifdef __va_arg_pack __fortify_function int __NTH (asprintf (char **__restrict __ptr, const char *__restrict __fmt, ...)) { return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } __fortify_function int __NTH (__asprintf (char **__restrict __ptr, const char *__restrict __fmt, ...)) { return __asprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } __fortify_function int __NTH (obstack_printf (struct obstack *__restrict __obstack, const char *__restrict __fmt, ...)) { return __obstack_printf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ()); } # elif !defined __cplusplus # define asprintf(ptr, ...) \ __asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # define __asprintf(ptr, ...) \ __asprintf_chk (ptr, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # define obstack_printf(obstack, ...) \ __obstack_printf_chk (obstack, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__) # endif __fortify_function int __NTH (vasprintf (char **__restrict __ptr, const char *__restrict __fmt, __gnuc_va_list __ap)) { return __vasprintf_chk (__ptr, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); } __fortify_function int __NTH (obstack_vprintf (struct obstack *__restrict __obstack, const char *__restrict __fmt, __gnuc_va_list __ap)) { return __obstack_vprintf_chk (__obstack, __USE_FORTIFY_LEVEL - 1, __fmt, __ap); } # endif #endif #if __GLIBC_USE (DEPRECATED_GETS) extern char *__REDIRECT (__gets_warn, (char *__str), gets) __wur __warnattr ("please use fgets or getline instead, gets can't " "specify buffer size"); __fortify_function __wur char * gets (char *__str) { if (__glibc_objsize (__str) != (size_t) -1) return __gets_chk (__str, __glibc_objsize (__str)); return __gets_warn (__str); } #endif extern char *__REDIRECT (__fgets_alias, (char *__restrict __s, int __n, FILE *__restrict __stream), fgets) __wur __attr_access ((__write_only__, 1, 2)); extern char *__REDIRECT (__fgets_chk_warn, (char *__restrict __s, size_t __size, int __n, FILE *__restrict __stream), __fgets_chk) __wur __warnattr ("fgets called with bigger size than length " "of destination buffer"); __fortify_function __wur __fortified_attr_access (__write_only__, 1, 2) char * fgets (char *__restrict __s, int __n, FILE *__restrict __stream) { size_t sz = __glibc_objsize (__s); if (__glibc_safe_or_unknown_len (__n, sizeof (char), sz)) return __fgets_alias (__s, __n, __stream); if (__glibc_unsafe_len (__n, sizeof (char), sz)) return __fgets_chk_warn (__s, sz, __n, __stream); return __fgets_chk (__s, sz, __n, __stream); } extern size_t __REDIRECT (__fread_alias, (void *__restrict __ptr, size_t __size, size_t __n, FILE *__restrict __stream), fread) __wur; extern size_t __REDIRECT (__fread_chk_warn, (void *__restrict __ptr, size_t __ptrlen, size_t __size, size_t __n, FILE *__restrict __stream), __fread_chk) __wur __warnattr ("fread called with bigger size * nmemb than length " "of destination buffer"); __fortify_function __wur size_t fread (void *__restrict __ptr, size_t __size, size_t __n, FILE *__restrict __stream) { size_t sz = __glibc_objsize0 (__ptr); if (__glibc_safe_or_unknown_len (__n, __size, sz)) return __fread_alias (__ptr, __size, __n, __stream); if (__glibc_unsafe_len (__n, __size, sz)) return __fread_chk_warn (__ptr, sz, __size, __n, __stream); return __fread_chk (__ptr, sz, __size, __n, __stream); } #ifdef __USE_GNU extern char *__REDIRECT (__fgets_unlocked_alias, (char *__restrict __s, int __n, FILE *__restrict __stream), fgets_unlocked) __wur __attr_access ((__write_only__, 1, 2)); extern char *__REDIRECT (__fgets_unlocked_chk_warn, (char *__restrict __s, size_t __size, int __n, FILE *__restrict __stream), __fgets_unlocked_chk) __wur __warnattr ("fgets_unlocked called with bigger size than length " "of destination buffer"); __fortify_function __wur __fortified_attr_access (__write_only__, 1, 2) char * fgets_unlocked (char *__restrict __s, int __n, FILE *__restrict __stream) { size_t sz = __glibc_objsize (__s); if (__glibc_safe_or_unknown_len (__n, sizeof (char), sz)) return __fgets_unlocked_alias (__s, __n, __stream); if (__glibc_unsafe_len (__n, sizeof (char), sz)) return __fgets_unlocked_chk_warn (__s, sz, __n, __stream); return __fgets_unlocked_chk (__s, sz, __n, __stream); } #endif #ifdef __USE_MISC # undef fread_unlocked extern size_t __REDIRECT (__fread_unlocked_alias, (void *__restrict __ptr, size_t __size, size_t __n, FILE *__restrict __stream), fread_unlocked) __wur; extern size_t __REDIRECT (__fread_unlocked_chk_warn, (void *__restrict __ptr, size_t __ptrlen, size_t __size, size_t __n, FILE *__restrict __stream), __fread_unlocked_chk) __wur __warnattr ("fread_unlocked called with bigger size * nmemb than " "length of destination buffer"); __fortify_function __wur size_t fread_unlocked (void *__restrict __ptr, size_t __size, size_t __n, FILE *__restrict __stream) { size_t sz = __glibc_objsize0 (__ptr); if (__glibc_safe_or_unknown_len (__n, __size, sz)) { # ifdef __USE_EXTERN_INLINES if (__builtin_constant_p (__size) && __builtin_constant_p (__n) && (__size | __n) < (((size_t) 1) << (8 * sizeof (size_t) / 2)) && __size * __n <= 8) { size_t __cnt = __size * __n; char *__cptr = (char *) __ptr; if (__cnt == 0) return 0; for (; __cnt > 0; --__cnt) { int __c = getc_unlocked (__stream); if (__c == EOF) break; *__cptr++ = __c; } return (__cptr - (char *) __ptr) / __size; } # endif return __fread_unlocked_alias (__ptr, __size, __n, __stream); } if (__glibc_unsafe_len (__n, __size, sz)) return __fread_unlocked_chk_warn (__ptr, sz, __size, __n, __stream); return __fread_unlocked_chk (__ptr, sz, __size, __n, __stream); } #endif #endif /* bits/stdio2.h. */