File: fread.c

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/*
 * fread.c
 */

#include <errno.h>
#include <unistd.h>
#include <stdio.h>

size_t _fread(void *buf, size_t count, FILE * f)
{
    size_t bytes = 0;
    ssize_t rv;
    char *p = buf;

    while (count) {
	rv = read(fileno(f), p, count);
	if (rv == -1) {
	    if (errno == EINTR || errno == EAGAIN)
		continue;
	    else
		break;
	} else if (rv == 0) {
	    break;
	}

	p += rv;
	bytes += rv;
	count -= rv;
    }

    return bytes;
}