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Add the wcslcpy, wcslcat functions

Browse Source 
These functions are about to be added to POSIX, under Austin Group
issue 986.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
This commit is contained in:
Florian Weimer 2023-06-14 18:10:24 +02:00
parent 454a20c875
commit b54e5d1c92
49 changed files with 563 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
debug/Makefile
View File

@ -105,6 +105,8 @@ routines = \
wcrtomb_chk \
wcscat_chk \
wcscpy_chk \
wcslcat_chk \
wcslcpy_chk \
wcsncat_chk \
wcsncpy_chk \
wcsnrtombs_chk \

2
debug/Versions
View File

@ -61,6 +61,8 @@ libc {
GLIBC_2.38 {
__strlcat_chk;
__strlcpy_chk;
__wcslcat_chk;
__wcslcpy_chk;
}
GLIBC_PRIVATE {
__fortify_fail;

17
debug/tst-fortify.c
View File

@ -782,6 +782,18 @@ do_test (void)
wcsncpy (wbuf + 9, L"XABCDEFGH", 8);
CHK_FAIL_END
CHK_FAIL_START
wcslcpy (wbuf + 7, L"X", 4);
CHK_FAIL_END
CHK_FAIL_START
wcslcpy (wbuf + 7, L"X", l0 + 4);
CHK_FAIL_END
CHK_FAIL_START
wcslcpy (wbuf + 9, L"XABCDEFGH", 8);
CHK_FAIL_END
CHK_FAIL_START
wcpncpy (wbuf + 9, L"XABCDEFGH", 8);
CHK_FAIL_END
@ -804,6 +816,11 @@ do_test (void)
wcsncat (wbuf, L"ZYXWV", l0 + 3);
CHK_FAIL_END
wmemcpy (wbuf, wstr1 + 4, 7);
CHK_FAIL_START
wcslcat (wbuf, L"ZYXWV", l0 + 11);
CHK_FAIL_END
CHK_FAIL_START
wmemcpy (wa.buf1 + 1, L"abcdefghij", 10);
CHK_FAIL_END

31
debug/wcslcat_chk.c Normal file
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@ -0,0 +1,31 @@
/* Fortified version of wcslcat.
Copyright (C) 2023 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/>. */
#include <wchar.h>
/* Check that the user-supplied size does not exceed the
compiler-determined size, and then forward to wcslcat. */
size_t
__wcslcat_chk (wchar_t *__restrict s1, const wchar_t *__restrict s2,
size_t n, size_t s1len)
{
if (__glibc_unlikely (s1len < n))
__chk_fail ();
return __wcslcat (s1, s2, n);
}

31
debug/wcslcpy_chk.c Normal file
View File

@ -0,0 +1,31 @@
/* Fortified version of wcslcpy.
Copyright (C) 2023 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/>. */
#include <wchar.h>
/* Check that the user-supplied size does not exceed the
compiler-determined size, and then forward to wcslcpy. */
size_t
__wcslcpy_chk (wchar_t *__restrict s1, const wchar_t *__restrict s2,
size_t n, size_t s1len)
{
if (__glibc_unlikely (s1len < n))
__chk_fail ();
return __wcslcpy (s1, s2, n);
}

5
include/wchar.h
View File

@ -203,6 +203,8 @@ extern size_t __wcslen (const wchar_t *__s) __attribute_pure__;
extern size_t __wcsnlen (const wchar_t *__s, size_t __maxlen)
__attribute_pure__;
extern wchar_t *__wcscat (wchar_t *dest, const wchar_t *src);
extern __typeof (wcslcat) __wcslcat;
libc_hidden_proto (__wcslcat)
extern wint_t __btowc (int __c) attribute_hidden;
extern int __mbsinit (const __mbstate_t *__ps);
extern size_t __mbrtowc (wchar_t *__restrict __pwc,
@ -237,8 +239,11 @@ extern wchar_t *__wcscpy (wchar_t *__restrict __dest,
const wchar_t *__restrict __src)
attribute_hidden __nonnull ((1, 2));
libc_hidden_proto (__wcscpy)
extern __typeof (wcslcpy) __wcslcpy;
libc_hidden_proto (__wcslcpy)
extern wchar_t *__wcsncpy (wchar_t *__restrict __dest,
const wchar_t *__restrict __src, size_t __n);
extern wchar_t *__wcpcpy (wchar_t *__dest, const wchar_t *__src);
extern wchar_t *__wcpncpy (wchar_t *__dest, const wchar_t *__src,
size_t __n);

4
sysdeps/mach/hurd/i386/libc.abilist
View File

@ -2328,8 +2328,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/aarch64/libc.abilist
View File

@ -2667,5 +2667,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/alpha/libc.abilist
View File

@ -2776,8 +2776,12 @@ GLIBC_2.38 __nldbl___isoc23_vwscanf F
GLIBC_2.38 __nldbl___isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F

4
sysdeps/unix/sysv/linux/arc/libc.abilist
View File

@ -2428,5 +2428,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/arm/be/libc.abilist
View File

@ -548,8 +548,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
GLIBC_2.4 _IO_2_1_stdin_ D 0xa0

4
sysdeps/unix/sysv/linux/arm/le/libc.abilist
View File

@ -545,8 +545,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
GLIBC_2.4 _IO_2_1_stdin_ D 0xa0

4
sysdeps/unix/sysv/linux/csky/libc.abilist
View File

@ -2704,5 +2704,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/hppa/libc.abilist
View File

@ -2653,8 +2653,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/i386/libc.abilist
View File

@ -2837,8 +2837,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/ia64/libc.abilist
View File

@ -2602,8 +2602,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
View File

@ -2188,5 +2188,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
View File

@ -549,8 +549,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0x98
GLIBC_2.4 _IO_2_1_stdin_ D 0x98

4
sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
View File

@ -2780,8 +2780,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
View File

@ -2753,5 +2753,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
View File

@ -2750,5 +2750,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
View File

@ -2745,8 +2745,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
View File

@ -2743,8 +2743,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
View File

@ -2751,8 +2751,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
View File

@ -2653,8 +2653,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/nios2/libc.abilist
View File

@ -2792,5 +2792,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/or1k/libc.abilist
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@ -2174,5 +2174,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
View File

@ -2819,8 +2819,12 @@ GLIBC_2.38 __nldbl___isoc23_vwscanf F
GLIBC_2.38 __nldbl___isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F

4
sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
View File

@ -2852,8 +2852,12 @@ GLIBC_2.38 __nldbl___isoc23_vwscanf F
GLIBC_2.38 __nldbl___isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F

4
sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
View File

@ -2573,8 +2573,12 @@ GLIBC_2.38 __nldbl___isoc23_vwscanf F
GLIBC_2.38 __nldbl___isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F

4
sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
View File

@ -2887,5 +2887,9 @@ GLIBC_2.38 __nldbl___isoc23_vwscanf F
GLIBC_2.38 __nldbl___isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
View File

@ -2430,5 +2430,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
View File

@ -2630,5 +2630,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
View File

@ -2817,8 +2817,12 @@ GLIBC_2.38 __nldbl___isoc23_vwscanf F
GLIBC_2.38 __nldbl___isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F

4
sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
View File

@ -2610,8 +2610,12 @@ GLIBC_2.38 __nldbl___isoc23_vwscanf F
GLIBC_2.38 __nldbl___isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F

4
sysdeps/unix/sysv/linux/sh/be/libc.abilist
View File

@ -2660,8 +2660,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/sh/le/libc.abilist
View File

@ -2657,8 +2657,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
View File

@ -2812,8 +2812,12 @@ GLIBC_2.38 __nldbl___isoc23_vwscanf F
GLIBC_2.38 __nldbl___isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F

4
sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
View File

@ -2625,8 +2625,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
View File

@ -2576,8 +2576,12 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F
GLIBC_2.4 __confstr_chk F
GLIBC_2.4 __fgets_chk F
GLIBC_2.4 __fgets_unlocked_chk F

4
sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
View File

@ -2682,5 +2682,9 @@ GLIBC_2.38 __isoc23_wcstoumax F
GLIBC_2.38 __isoc23_wscanf F
GLIBC_2.38 __strlcat_chk F
GLIBC_2.38 __strlcpy_chk F
GLIBC_2.38 __wcslcat_chk F
GLIBC_2.38 __wcslcpy_chk F
GLIBC_2.38 strlcat F
GLIBC_2.38 strlcpy F
GLIBC_2.38 wcslcat F
GLIBC_2.38 wcslcpy F

4
wcsmbs/Makefile
View File

@ -74,6 +74,8 @@ routines := \
wcscpy \
wcscspn \
wcsdup \
wcslcat \
wcslcpy \
wcslen \
wcsmbsload \
wcsncase \
@ -155,6 +157,8 @@ tests := \
tst-wchar-h \
tst-wcpncpy \
tst-wcrtomb \
tst-wcslcat \
tst-wcslcpy \
tst-wcsnlen \
tst-wcstod-nan-locale \
tst-wcstod-nan-sign \

2
wcsmbs/Versions
View File

@ -65,5 +65,7 @@ libc {
__isoc23_vswscanf;
__isoc23_vwscanf;
__isoc23_wscanf;
wcslcat;
wcslcpy;
}
}

39
wcsmbs/bits/wchar2.h
View File

@ -199,6 +199,45 @@ __NTH (wcsncat (wchar_t *__restrict __dest, const wchar_t *__restrict __src,
return __wcsncat_alias (__dest, __src, __n);
}
#ifdef __USE_MISC
extern size_t __wcslcpy_chk (wchar_t *__dest, const wchar_t *__src, size_t __n,
size_t __destlen) __THROW;
extern size_t __REDIRECT_NTH (__wcslcpy_alias,
(wchar_t *__dest, const wchar_t *__src,
size_t __n), wcslcpy);
__fortify_function size_t
__NTH (wcslcpy (wchar_t *__restrict __dest, const wchar_t *__restrict __src,
size_t __n))
{
if (__glibc_objsize (__dest) != (size_t) -1
&& (!__builtin_constant_p (__n
> __glibc_objsize (__dest) / sizeof (wchar_t))
|| __n > __glibc_objsize (__dest) / sizeof (wchar_t)))
return __wcslcpy_chk (__dest, __src, __n,
__glibc_objsize (__dest) / sizeof (wchar_t));
return __wcslcpy_alias (__dest, __src, __n);
}
extern size_t __wcslcat_chk (wchar_t *__dest, const wchar_t *__src, size_t __n,
size_t __destlen) __THROW;
extern size_t __REDIRECT_NTH (__wcslcat_alias,
(wchar_t *__dest, const wchar_t *__src,
size_t __n), wcslcat);
__fortify_function size_t
__NTH (wcslcat (wchar_t *__restrict __dest, const wchar_t *__restrict __src,
size_t __n))
{
if (__glibc_objsize (__dest) != (size_t) -1
&& (!__builtin_constant_p (__n > __glibc_objsize (__dest)
/ sizeof (wchar_t))
|| __n > __glibc_objsize (__dest) / sizeof (wchar_t)))
return __wcslcat_chk (__dest, __src, __n,
__glibc_objsize (__dest) / sizeof (wchar_t));
return __wcslcat_alias (__dest, __src, __n);
}
#endif /* __USE_MISC */
extern int __REDIRECT_NTH_LDBL (__swprintf_alias,

93
wcsmbs/tst-wcslcat.c Normal file
View File

@ -0,0 +1,93 @@
/* Test the wcslcat function.
Copyright (C) 2023 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/>. */
#include <array_length.h>
#include <stdio.h>
#include <stdlib.h>
#include <support/check.h>
#include <wchar.h>
static int
do_test (void)
{
struct {
wchar_t buf1[16];
wchar_t buf2[16];
} s;
/* Nothing is written to the destination if its size is 0. */
wmemset (s.buf1, '@', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
TEST_COMPARE (wcslcat (s.buf1, L"", 0), 0);
TEST_COMPARE_BLOB (&s, sizeof (s), L"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
TEST_COMPARE (wcslcat (s.buf1, L"Hello!", 0), 6);
TEST_COMPARE_BLOB (&s, sizeof (s), L"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
/* No bytes are are modified in the target buffer if the source
string is short enough. */
wmemset (s.buf1, '@', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
wcscpy (s.buf1, L"He");
TEST_COMPARE (wcslcat (s.buf1, L"llo!", array_length (s.buf1)), 6);
TEST_COMPARE_BLOB (&s, sizeof (s), L"Hello!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
/* A source string which fits exactly into the destination buffer is
not truncated. */
wmemset (s.buf1, '@', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
wcscpy (s.buf1, L"H");
TEST_COMPARE (wcslcat (s.buf1, L"ello, world!!!", array_length (s.buf1)),
15);
TEST_COMPARE_BLOB (&s, sizeof (s),
L"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
/* A source string one character longer than the destination buffer
is truncated by one character. The total length is returned. */
wmemset (s.buf1, '@', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
wcscpy (s.buf1, L"Hello");
TEST_COMPARE (wcslcat (s.buf1, L", world!!!!", array_length (s.buf1)), 16);
TEST_COMPARE_BLOB (&s, sizeof (s),
L"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
/* An even longer source string is truncated as well, and the total
length is returned. */
wmemset (s.buf1, '@', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
wcscpy (s.buf1, L"Hello,");
TEST_COMPARE (wcslcat (s.buf1, L" world!!!!!!!!", array_length (s.buf1)),
20);
TEST_COMPARE_BLOB (&s, sizeof (s),
L"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
/* A destination string which is not NUL-terminated does not result
in any changes to the buffer. */
wmemset (s.buf1, '$', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
TEST_COMPARE (wcslcat (s.buf1, L"", array_length (s.buf1)), 16);
TEST_COMPARE_BLOB (&s, sizeof (s), L"$$$$$$$$$$$$$$$$@@@@@@@@@@@@@@@@", 128);
TEST_COMPARE (wcslcat (s.buf1, L"Hello!", array_length (s.buf1)), 22);
TEST_COMPARE_BLOB (&s, sizeof (s), L"$$$$$$$$$$$$$$$$@@@@@@@@@@@@@@@@", 128);
TEST_COMPARE (wcslcat (s.buf1, L"Hello, world!!!!!!!!",
array_length (s.buf1)), 36);
TEST_COMPARE_BLOB (&s, sizeof (s), L"$$$$$$$$$$$$$$$$@@@@@@@@@@@@@@@@", 128);
return 0;
}
#include <support/test-driver.c>

78
wcsmbs/tst-wcslcpy.c Normal file
View File

@ -0,0 +1,78 @@
/* Test the wcslcpy function.
Copyright (C) 2023 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/>. */
#include <array_length.h>
#include <stdio.h>
#include <stdlib.h>
#include <support/check.h>
#include <wchar.h>
static int
do_test (void)
{
struct {
wchar_t buf1[16];
wchar_t buf2[16];
} s;
/* Nothing is written to the destination if its size is 0. */
wmemset (s.buf1, '@', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
TEST_COMPARE (wcslcpy (s.buf1, L"Hello!", 0), 6);
TEST_COMPARE_BLOB (&s, sizeof (s), L"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
/* No bytes are are modified in the target buffer if the source
string is short enough. */
wmemset (s.buf1, '@', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
TEST_COMPARE (wcslcpy (s.buf1, L"Hello!", array_length (s.buf1)), 6);
TEST_COMPARE_BLOB (&s, sizeof (s),
L"Hello!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
/* A source string which fits exactly into the destination buffer is
not truncated. */
wmemset (s.buf1, '@', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
TEST_COMPARE (wcslcpy (s.buf1, L"Hello, world!!!", array_length (s.buf1)),
15);
TEST_COMPARE_BLOB (&s, sizeof (s),
L"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
/* A source string one character longer than the destination buffer
is truncated by one character. The untruncated source length is
returned. */
wmemset (s.buf1, '@', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
TEST_COMPARE (wcslcpy (s.buf1, L"Hello, world!!!!", array_length (s.buf1)),
16);
TEST_COMPARE_BLOB (&s, sizeof (s),
L"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
/* An even longer source string is truncated as well, and the
original length is returned. */
wmemset (s.buf1, '@', array_length (s.buf1));
wmemset (s.buf2, '@', array_length (s.buf2));
TEST_COMPARE (wcslcpy (s.buf1, L"Hello, world!!!!!!!!",
array_length (s.buf1)), 20);
TEST_COMPARE_BLOB (&s, sizeof (s),
L"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
return 0;
}
#include <support/test-driver.c>

13
wcsmbs/wchar.h
View File

@ -104,6 +104,19 @@ extern wchar_t *wcsncpy (wchar_t *__restrict __dest,
const wchar_t *__restrict __src, size_t __n)
__THROW __nonnull ((1, 2));
#ifdef __USE_MISC
/* Copy at most N - 1 characters from SRC to DEST. */
extern size_t wcslcpy (wchar_t *__restrict __dest,
const wchar_t *__restrict __src, size_t __n)
__THROW __nonnull ((1, 2)) __attr_access ((__write_only__, 1, 3));
/* Append SRC to DEST, possibly with truncation to keep the total size
below N. */
extern size_t wcslcat (wchar_t *__restrict __dest,
const wchar_t *__restrict __src, size_t __n)
__THROW __nonnull ((1, 2)) __attr_access ((__read_write__, 1, 3));
#endif
/* Append SRC onto DEST. */
extern wchar_t *wcscat (wchar_t *__restrict __dest,
const wchar_t *__restrict __src)

60
wcsmbs/wcslcat.c Normal file
View File

@ -0,0 +1,60 @@
/* Append a null-terminated wide string to another, with length checking.
Copyright (C) 2023 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/>. */
#include <stdint.h>
#include <wchar.h>
size_t
__wcslcat (wchar_t *__restrict dest, const wchar_t *__restrict src,
size_t size)
{
size_t src_length = __wcslen (src);
/* Our implementation strlcat supports dest == NULL if size == 0
(for consistency with snprintf and strlcpy), but wcsnlen does
not, so we have to cover this case explicitly. */
if (size == 0)
return src_length;
size_t dest_length = __wcsnlen (dest, size);
if (dest_length != size)
{
/* Copy at most the remaining number of characters in the
destination buffer. Leave for the null terminator. */
size_t to_copy = size - dest_length - 1;
/* But not more than what is available in the source string. */
if (to_copy > src_length)
to_copy = src_length;
wchar_t *target = dest + dest_length;
__wmemcpy (target, src, to_copy);
target[to_copy] = '\0';
}
/* If the sum wraps around, we have more than SIZE_MAX + 2 bytes in
the two input strings (including both null terminators). If each
byte in the address space can be assigned a unique size_t value
(which the static_assert checks), then by the pigeonhole
principle, the two input strings must overlap, which is
undefined. */
_Static_assert (sizeof (uintptr_t) == sizeof (size_t),
"theoretical maximum object size covers address space");
return dest_length + src_length;
}
libc_hidden_def (__wcslcat)
weak_alias (__wcslcat, wcslcat)

46
wcsmbs/wcslcpy.c Normal file
View File

@ -0,0 +1,46 @@
/* Copy a null-terminated wide string to a fixed-size buffer.
Copyright (C) 2023 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
<http://www.gnu.org/licenses/>. */
#include <wchar.h>
size_t
__wcslcpy (wchar_t *__restrict dest, const wchar_t *__restrict src, size_t size)
{
size_t src_length = __wcslen (src);
if (__glibc_unlikely (src_length >= size))
{
if (size > 0)
{
/* Copy the leading portion of the string. The last
character is subsequently overwritten with the null
terminator, but the destination size is usually a
multiple of a small power of two, so writing it twice
should be more efficient than copying an odd number of
character. */
__wmemcpy (dest, src, size);
dest[size - 1] = '\0';
}
}
else
/* Copy the string and its terminating null character. */
__wmemcpy (dest, src, src_length + 1);
return src_length;
}
libc_hidden_def (__wcslcpy)
weak_alias (__wcslcpy, wcslcpy)