| /* 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 (__builtin_expect (bytes_requested > ptrlen, 0)) |
| __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; |
| } |