39 lines
694 B
C
39 lines
694 B
C
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#include "stdio_impl.h"
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#include <string.h>
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#define MIN(a,b) ((a)<(b) ? (a) : (b))
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size_t fread(void *restrict destv, size_t size, size_t nmemb, FILE *restrict f)
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{
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unsigned char *dest = destv;
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size_t len = size*nmemb, l = len, k;
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if (!size) nmemb = 0;
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FLOCK(f);
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f->mode |= f->mode-1;
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if (f->rpos != f->rend) {
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/* First exhaust the buffer. */
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k = MIN(f->rend - f->rpos, l);
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memcpy(dest, f->rpos, k);
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f->rpos += k;
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dest += k;
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l -= k;
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}
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/* Read the remainder directly */
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for (; l; l-=k, dest+=k) {
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k = __toread(f) ? 0 : f->read(f, dest, l);
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if (!k) {
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FUNLOCK(f);
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return (len-l)/size;
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}
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}
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FUNLOCK(f);
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return nmemb;
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}
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weak_alias(fread, fread_unlocked);
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