1/* fread with error checking.
2 Copyright (C) 2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <support/xstdio.h>
20
21#include <support/check.h>
22#include <stdlib.h>
23
24void
25xfread (void *ptr, size_t size, size_t nmemb, FILE *stream)
26{
27 size_t count = 0;
28 char *p = ptr;
29
30 while (count < nmemb)
31 {
32 size_t ret = fread (p, size, nmemb - count, stream);
33 if (ret <= 0 && ferror(stream))
34 FAIL_EXIT1 ("read of %zu bytes failed after %td: %m",
35 size * nmemb, p - (char *) ptr);
36 count += ret;
37 p += size * ret;
38 }
39}
40