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