mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 14:00:30 +00:00
39ca997ab3
Rename the identifier sz to __sz everywhere.
Fixes: a643f60c53 ("Make sure that the fortified function conditionals are constant")
361 lines
13 KiB
C
361 lines
13 KiB
C
/* Checking macros for wchar functions.
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Copyright (C) 2005-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _WCHAR_H
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# error "Never include <bits/wchar2.h> directly; use <wchar.h> instead."
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#endif
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__fortify_function __attribute_overloadable__ wchar_t *
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__NTH (wmemcpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __s1),
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const wchar_t *__restrict __s2, size_t __n))
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__fortify_clang_warning_only_if_bos0_lt2 (__n, __s1, sizeof (wchar_t),
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"wmemcpy called with length bigger "
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"than size of destination buffer")
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{
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return __glibc_fortify_n (wmemcpy, __n, sizeof (wchar_t),
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__glibc_objsize0 (__s1),
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__s1, __s2, __n);
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}
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__fortify_function __attribute_overloadable__ wchar_t *
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__NTH (wmemmove (__fortify_clang_overload_arg (wchar_t *, ,__s1),
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const wchar_t *__s2, size_t __n))
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__fortify_clang_warning_only_if_bos0_lt2 (__n, __s1, sizeof (wchar_t),
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"wmemmove called with length bigger "
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"than size of destination buffer")
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{
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return __glibc_fortify_n (wmemmove, __n, sizeof (wchar_t),
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__glibc_objsize0 (__s1),
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__s1, __s2, __n);
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}
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#ifdef __USE_GNU
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__fortify_function __attribute_overloadable__ wchar_t *
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__NTH (wmempcpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __s1),
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const wchar_t *__restrict __s2, size_t __n))
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__fortify_clang_warning_only_if_bos0_lt2 (__n, __s1, sizeof (wchar_t),
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"wmempcpy called with length bigger "
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"than size of destination buffer")
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{
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return __glibc_fortify_n (wmempcpy, __n, sizeof (wchar_t),
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__glibc_objsize0 (__s1),
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__s1, __s2, __n);
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}
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#endif
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__fortify_function __attribute_overloadable__ wchar_t *
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__NTH (wmemset (__fortify_clang_overload_arg (wchar_t *, ,__s), wchar_t __c,
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size_t __n))
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__fortify_clang_warning_only_if_bos0_lt2 (__n, __s, sizeof (wchar_t),
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"wmemset called with length bigger "
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"than size of destination buffer")
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{
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return __glibc_fortify_n (wmemset, __n, sizeof (wchar_t),
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__glibc_objsize0 (__s),
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__s, __c, __n);
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}
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__fortify_function __attribute_overloadable__ wchar_t *
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__NTH (wcscpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
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const wchar_t *__restrict __src))
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{
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size_t __sz = __glibc_objsize (__dest);
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if (__sz != (size_t) -1)
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return __wcscpy_chk (__dest, __src, __sz / sizeof (wchar_t));
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return __wcscpy_alias (__dest, __src);
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}
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__fortify_function __attribute_overloadable__ wchar_t *
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__NTH (wcpcpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
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const wchar_t *__restrict __src))
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{
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size_t __sz = __glibc_objsize (__dest);
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if (__sz != (size_t) -1)
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return __wcpcpy_chk (__dest, __src, __sz / sizeof (wchar_t));
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return __wcpcpy_alias (__dest, __src);
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}
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__fortify_function __attribute_overloadable__ wchar_t *
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__NTH (wcsncpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
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const wchar_t *__restrict __src, size_t __n))
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__fortify_clang_warning_only_if_bos0_lt2 (__n, __dest, sizeof (wchar_t),
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"wcsncpy called with length bigger "
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"than size of destination buffer")
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{
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return __glibc_fortify_n (wcsncpy, __n, sizeof (wchar_t),
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__glibc_objsize (__dest),
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__dest, __src, __n);
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}
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__fortify_function __attribute_overloadable__ wchar_t *
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__NTH (wcpncpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
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const wchar_t *__restrict __src, size_t __n))
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__fortify_clang_warning_only_if_bos0_lt2 (__n, __dest, sizeof (wchar_t),
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"wcpncpy called with length bigger "
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"than size of destination buffer")
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{
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return __glibc_fortify_n (wcpncpy, __n, sizeof (wchar_t),
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__glibc_objsize (__dest),
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__dest, __src, __n);
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}
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__fortify_function __attribute_overloadable__ wchar_t *
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__NTH (wcscat (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
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const wchar_t *__restrict __src))
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{
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size_t __sz = __glibc_objsize (__dest);
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if (__sz != (size_t) -1)
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return __wcscat_chk (__dest, __src, __sz / sizeof (wchar_t));
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return __wcscat_alias (__dest, __src);
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}
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__fortify_function __attribute_overloadable__ wchar_t *
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__NTH (wcsncat (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
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const wchar_t *__restrict __src, size_t __n))
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{
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size_t __sz = __glibc_objsize (__dest);
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if (__sz != (size_t) -1)
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return __wcsncat_chk (__dest, __src, __n, __sz / sizeof (wchar_t));
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return __wcsncat_alias (__dest, __src, __n);
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}
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#ifdef __USE_MISC
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__fortify_function __attribute_overloadable__ size_t
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__NTH (wcslcpy (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
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const wchar_t *__restrict __src, size_t __n))
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__fortify_clang_warning_only_if_bos0_lt2 (__n, __dest, sizeof (wchar_t),
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"wcslcpy called with length bigger "
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"than size of destination buffer")
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{
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if (__glibc_objsize (__dest) != (size_t) -1
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&& (!__builtin_constant_p (__n
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> __glibc_objsize (__dest) / sizeof (wchar_t))
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|| __n > __glibc_objsize (__dest) / sizeof (wchar_t)))
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return __wcslcpy_chk (__dest, __src, __n,
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__glibc_objsize (__dest) / sizeof (wchar_t));
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return __wcslcpy_alias (__dest, __src, __n);
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}
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__fortify_function __attribute_overloadable__ size_t
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__NTH (wcslcat (__fortify_clang_overload_arg (wchar_t *, __restrict, __dest),
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const wchar_t *__restrict __src, size_t __n))
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{
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if (__glibc_objsize (__dest) != (size_t) -1
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&& (!__builtin_constant_p (__n > __glibc_objsize (__dest)
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/ sizeof (wchar_t))
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|| __n > __glibc_objsize (__dest) / sizeof (wchar_t)))
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return __wcslcat_chk (__dest, __src, __n,
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__glibc_objsize (__dest) / sizeof (wchar_t));
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return __wcslcat_alias (__dest, __src, __n);
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}
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#endif /* __USE_MISC */
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#ifdef __va_arg_pack
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__fortify_function int
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__NTH (swprintf (wchar_t *__restrict __s, size_t __n,
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const wchar_t *__restrict __fmt, ...))
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{
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size_t __sz = __glibc_objsize (__s);
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if (__sz != (size_t) -1 || __USE_FORTIFY_LEVEL > 1)
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return __swprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
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__sz / sizeof (wchar_t), __fmt, __va_arg_pack ());
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return __swprintf_alias (__s, __n, __fmt, __va_arg_pack ());
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}
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#elif __fortify_use_clang
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__fortify_function_error_function __attribute_overloadable__ int
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__NTH (swprintf (__fortify_clang_overload_arg (wchar_t *, __restrict, __s),
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size_t __n, const wchar_t *__restrict __fmt, ...))
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{
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__gnuc_va_list __fortify_ap;
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__builtin_va_start (__fortify_ap, __fmt);
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int __r;
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if (__glibc_objsize (__s) != (size_t) -1 || __USE_FORTIFY_LEVEL > 1)
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__r = __vswprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
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__glibc_objsize (__s) / sizeof (wchar_t),
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__fmt, __fortify_ap);
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else
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__r = __vswprintf_alias (__s, __n, __fmt, __fortify_ap);
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__builtin_va_end (__fortify_ap);
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return __r;
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}
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#elif !defined __cplusplus
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/* XXX We might want to have support in gcc for swprintf. */
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# define swprintf(s, n, ...) \
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(__glibc_objsize (s) != (size_t) -1 || __USE_FORTIFY_LEVEL > 1 \
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? __swprintf_chk (s, n, __USE_FORTIFY_LEVEL - 1, \
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__glibc_objsize (s) / sizeof (wchar_t), __VA_ARGS__) \
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: swprintf (s, n, __VA_ARGS__))
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#endif
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__fortify_function int
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__NTH (vswprintf (wchar_t *__restrict __s, size_t __n,
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const wchar_t *__restrict __fmt, __gnuc_va_list __ap))
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{
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size_t __sz = __glibc_objsize (__s);
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if (__sz != (size_t) -1 || __USE_FORTIFY_LEVEL > 1)
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return __vswprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
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__sz / sizeof (wchar_t), __fmt, __ap);
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return __vswprintf_alias (__s, __n, __fmt, __ap);
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}
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#if __USE_FORTIFY_LEVEL > 1
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# ifdef __va_arg_pack
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__fortify_function int
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wprintf (const wchar_t *__restrict __fmt, ...)
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{
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return __wprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
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}
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__fortify_function int
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fwprintf (__FILE *__restrict __stream, const wchar_t *__restrict __fmt, ...)
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{
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return __fwprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
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__va_arg_pack ());
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}
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# elif !defined __cplusplus
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# define wprintf(...) \
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__wprintf_chk (__USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
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# define fwprintf(stream, ...) \
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__fwprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
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# endif
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__fortify_function int
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vwprintf (const wchar_t *__restrict __fmt, __gnuc_va_list __ap)
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{
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return __vwprintf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __ap);
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}
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__fortify_function int
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vfwprintf (__FILE *__restrict __stream,
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const wchar_t *__restrict __fmt, __gnuc_va_list __ap)
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{
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return __vfwprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
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}
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#endif
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__fortify_function __attribute_overloadable__ __wur wchar_t *
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fgetws (__fortify_clang_overload_arg (wchar_t *, __restrict, __s), int __n,
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__FILE *__restrict __stream)
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__fortify_clang_warning_only_if_bos_lt2 (__n, __s, sizeof (wchar_t),
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"fgetws called with length bigger "
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"than size of destination buffer")
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{
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size_t __sz = __glibc_objsize (__s);
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if (__glibc_safe_or_unknown_len (__n, sizeof (wchar_t), __sz))
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return __fgetws_alias (__s, __n, __stream);
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#if !__fortify_use_clang
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if (__glibc_unsafe_len (__n, sizeof (wchar_t), __sz))
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return __fgetws_chk_warn (__s, __sz / sizeof (wchar_t), __n, __stream);
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#endif
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return __fgetws_chk (__s, __sz / sizeof (wchar_t), __n, __stream);
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}
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#ifdef __USE_GNU
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__fortify_function __attribute_overloadable__ __wur wchar_t *
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fgetws_unlocked (__fortify_clang_overload_arg (wchar_t *, __restrict, __s),
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int __n, __FILE *__restrict __stream)
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__fortify_clang_warning_only_if_bos_lt2 (__n, __s, sizeof (wchar_t),
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"fgetws_unlocked called with length bigger "
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"than size of destination buffer")
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{
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size_t __sz = __glibc_objsize (__s);
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if (__glibc_safe_or_unknown_len (__n, sizeof (wchar_t), __sz))
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return __fgetws_unlocked_alias (__s, __n, __stream);
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# if !__fortify_use_clang
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if (__glibc_unsafe_len (__n, sizeof (wchar_t), __sz))
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return __fgetws_unlocked_chk_warn (__s, __sz / sizeof (wchar_t), __n,
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__stream);
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# endif
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return __fgetws_unlocked_chk (__s, __sz / sizeof (wchar_t), __n, __stream);
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}
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#endif
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__fortify_function __attribute_overloadable__ __wur size_t
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__NTH (wcrtomb (__fortify_clang_overload_arg (char *, __restrict, __s),
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wchar_t __wchar, mbstate_t *__restrict __ps))
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{
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/* We would have to include <limits.h> to get a definition of MB_LEN_MAX.
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But this would only disturb the namespace. So we define our own
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version here. */
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#define __WCHAR_MB_LEN_MAX 16
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#if defined MB_LEN_MAX && MB_LEN_MAX != __WCHAR_MB_LEN_MAX
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# error "Assumed value of MB_LEN_MAX wrong"
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#endif
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if (__glibc_objsize (__s) != (size_t) -1
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&& __WCHAR_MB_LEN_MAX > __glibc_objsize (__s))
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return __wcrtomb_chk (__s, __wchar, __ps, __glibc_objsize (__s));
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return __wcrtomb_alias (__s, __wchar, __ps);
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}
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__fortify_function __attribute_overloadable__ size_t
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__NTH (mbsrtowcs (__fortify_clang_overload_arg (wchar_t *, __restrict, __dst),
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const char **__restrict __src,
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size_t __len, mbstate_t *__restrict __ps))
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__fortify_clang_warning_only_if_bos_lt2 (__len, __dst, sizeof (wchar_t),
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"mbsrtowcs called with dst buffer "
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"smaller than len * sizeof (wchar_t)")
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{
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return __glibc_fortify_n (mbsrtowcs, __len, sizeof (wchar_t),
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__glibc_objsize (__dst),
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__dst, __src, __len, __ps);
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}
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__fortify_function __attribute_overloadable__ size_t
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__NTH (wcsrtombs (__fortify_clang_overload_arg (char *, __restrict, __dst),
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const wchar_t **__restrict __src,
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size_t __len, mbstate_t *__restrict __ps))
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__fortify_clang_warning_only_if_bos_lt (__len, __dst,
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"wcsrtombs called with dst buffer "
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"smaller than len")
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{
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return __glibc_fortify (wcsrtombs, __len, sizeof (char),
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__glibc_objsize (__dst),
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__dst, __src, __len, __ps);
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}
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#ifdef __USE_XOPEN2K8
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__fortify_function __attribute_overloadable__ size_t
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__NTH (mbsnrtowcs (__fortify_clang_overload_arg (wchar_t *, __restrict, __dst),
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const char **__restrict __src, size_t __nmc, size_t __len,
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mbstate_t *__restrict __ps))
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__fortify_clang_warning_only_if_bos_lt (sizeof (wchar_t) * __len, __dst,
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"mbsnrtowcs called with dst buffer "
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"smaller than len * sizeof (wchar_t)")
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{
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return __glibc_fortify_n (mbsnrtowcs, __len, sizeof (wchar_t),
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__glibc_objsize (__dst),
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__dst, __src, __nmc, __len, __ps);
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}
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__fortify_function __attribute_overloadable__ size_t
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__NTH (wcsnrtombs (__fortify_clang_overload_arg (char *, __restrict, __dst),
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const wchar_t **__restrict __src, size_t __nwc,
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size_t __len, mbstate_t *__restrict __ps))
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__fortify_clang_warning_only_if_bos_lt (__len, __dst,
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"wcsnrtombs called with dst buffer "
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"smaller than len")
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{
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return __glibc_fortify (wcsnrtombs, __len, sizeof (char),
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__glibc_objsize (__dst),
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__dst, __src, __nwc, __len, __ps);
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}
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#endif
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