| 1 | /* fread with error checking. |
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| 2 | Copyright (C) 2023-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <support/xstdio.h> |
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| 20 | |
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| 21 | #include <support/check.h> |
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| 22 | #include <stdlib.h> |
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| 23 | |
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| 24 | void |
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| 25 | xfread (void *ptr, size_t size, size_t nmemb, FILE *stream) |
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| 26 | { |
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| 27 | size_t count = 0; |
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| 28 | char *p = ptr; |
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| 29 | |
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| 30 | while (count < nmemb) |
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| 31 | { |
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| 32 | size_t ret = fread (ptr: p, size: size, n: nmemb - count, stream: stream); |
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| 33 | if (ret <= 0 && ferror(stream: stream)) |
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| 34 | FAIL_EXIT1 ("read of %zu bytes failed after %td: %m" , |
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| 35 | size * nmemb, p - (char *) ptr); |
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| 36 | count += ret; |
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| 37 | p += size * ret; |
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| 38 | } |
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| 39 | } |
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| 40 | |
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