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a84dcb4bdf
With fortification enabled, fread calls return result needs to be checked, has it gets the __wur macro enabled. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/* fread with error checking.
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Copyright (C) 2023 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, see
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<https://www.gnu.org/licenses/>. */
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#include <support/xstdio.h>
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#include <support/check.h>
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#include <stdlib.h>
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void
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xfread (void *ptr, size_t size, size_t nmemb, FILE *stream)
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{
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size_t count = 0;
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char *p = ptr;
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while (count < nmemb)
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{
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size_t ret = fread (p, size, nmemb - count, stream);
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if (ret <= 0 && ferror(stream))
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FAIL_EXIT1 ("read of %zu bytes failed after %td: %m",
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size * nmemb, p - (char *) ptr);
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count += ret;
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p += size * ret;
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}
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}
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