mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-31 22:10:34 +03:00
52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/* Copyright (C) 1993-2014 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/>.
|
|
|
|
As a special exception, if you link the code in this file with
|
|
files compiled with a GNU compiler to produce an executable,
|
|
that does not cause the resulting executable to be covered by
|
|
the GNU Lesser General Public License. This exception does not
|
|
however invalidate any other reasons why the executable file
|
|
might be covered by the GNU Lesser General Public License.
|
|
This exception applies to code released by its copyright holders
|
|
in files containing the exception. */
|
|
|
|
#include "libioP.h"
|
|
#include <stdio.h>
|
|
|
|
size_t
|
|
__fread_unlocked_chk (void *__restrict ptr, size_t ptrlen,
|
|
size_t size, size_t n, FILE *__restrict stream)
|
|
{
|
|
size_t bytes_requested = size * n;
|
|
if (__builtin_expect ((n | size)
|
|
>= (((size_t) 1) << (8 * sizeof (size_t) / 2)), 0))
|
|
{
|
|
if (size != 0 && bytes_requested / size != n)
|
|
__chk_fail ();
|
|
}
|
|
|
|
if (__glibc_unlikely (bytes_requested > ptrlen))
|
|
__chk_fail ();
|
|
|
|
CHECK_FILE (stream, 0);
|
|
if (bytes_requested == 0)
|
|
return 0;
|
|
|
|
size_t bytes_read = _IO_sgetn (stream, (char *) ptr, bytes_requested);
|
|
return bytes_requested == bytes_read ? n : bytes_read / size;
|
|
}
|