map->p_offset = 0;
map->p_fd_offset = 0;
map->p_len = 0;
+ map->status = 0;
return map;
}
}
if ((nread=read(map->fd,map->p + read_offset,read_size)) != read_size) {
- if (nread < 0) nread = 0;
+ if (nread < 0) {
+ nread = 0;
+ if (!map->status)
+ map->status = errno;
+ }
/* the best we can do is zero the buffer - the file
has changed mid transfer! */
memset(map->p+read_offset+nread, 0, read_size - nread);
}
-void unmap_file(struct map_struct *map)
+int unmap_file(struct map_struct *map)
{
+ int ret;
+
if (map->p) {
free(map->p);
map->p = NULL;
}
+ ret = map->status;
memset(map, 0, sizeof(*map));
free(map);
+
+ return ret;
}