buf_size = size-offset;
if (buf_size>HASH_BLOCKSIZE) buf_size = HASH_BLOCKSIZE;
- if ((buf=mmap(0, buf_size, PROT_READ, MAP_SHARED, fd, offset))==0) {
+ if ((buf=mmap(0, buf_size, PROT_READ, MAP_SHARED, fd, offset))==MAP_FAILED) {
perror("mmap(<hash>)");
goto out;
}