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8215c9ecf2
* include/bits/wchar2.h: New file. * wcsmbs/wchar.h: Include <bits/wchar2.h> if fortification is requested. * wcsmbs/wcsncpy.c: Add __wcsncpy alias. * string/bits/string3.h: Add fortified stpncpy definitions. * sysdeps/generic/stpncpy_chk.c: New file. * libio/vswprintf.c: Move _IO_wstrnfile definition to strfile.h. Export _IO_wstrn_jumps. * libio/strfile.h: Define _IO_wstrnfile and declare _IO_wstrn_jumps. * include/wchar.h: Declare __wcsncpy and __vswprintf_chk. * debug/fgetws_chk.c: New file. * debug/fgetws_u_chk.c: New file. * debug/fwprintf_chk.c: New file. * debug/swprintf_chk.c: New file. * debug/vfwprintf_chk.c: New file. * debug/vswprintf_chk.c: New file. * debug/vwprintf_chk.c: New file. * debug/wcpcpy_chk.c: New file. * debug/wcpncpy_chk.c: New file. * debug/wcscat_chk.c: New file. * debug/wcscpy_chk.c: New file. * debug/wcsncat_chk.c: New file. * debug/wcsncpy_chk.c: New file. * debug/wmemcpy_chk.c: New file. * debug/wmemmove_chk.c: New file. * debug/wmempcpy_chk.c: New file. * debug/wmemset_chk.c: New file. * debug/wprintf_chk.c: New file. * debug/tst-chk1.c: Add tests for new functions. * debug/Versions: Export new functions. * debug/Makefile (routines): Add new functions.
55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/* Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2001, 2005
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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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include "libioP.h"
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#include <wchar.h>
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#include <sys/param.h>
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wchar_t *
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__fgetws_chk (wchar_t *buf, size_t size, int n, _IO_FILE *fp)
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{
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_IO_size_t count;
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wchar_t *result;
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int old_error;
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CHECK_FILE (fp, NULL);
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if (n <= 0)
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return NULL;
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_IO_acquire_lock (fp);
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/* This is very tricky since a file descriptor may be in the
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non-blocking mode. The error flag doesn't mean much in this
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case. We return an error only when there is a new error. */
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old_error = fp->_IO_file_flags & _IO_ERR_SEEN;
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fp->_IO_file_flags &= ~_IO_ERR_SEEN;
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count = _IO_getwline (fp, buf, MIN ((size_t) n - 1, size), L'\n', 1);
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/* If we read in some bytes and errno is EAGAIN, that error will
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be reported for next read. */
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if (count == 0 || (_IO_ferror_unlocked (fp) && errno != EAGAIN))
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result = NULL;
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else if (count >= size)
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__chk_fail ();
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else
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{
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buf[count] = '\0';
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result = buf;
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}
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fp->_IO_file_flags |= old_error;
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_IO_release_lock (fp);
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return result;
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}
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