#ifndef _OBD_SNAP #define _OBD_SNAP #define OBD_SNAP_MAGIC 0x47224722 #define SNAP_MAX 8 /* must fit in "u" area of struct inode */ struct snap { time_t time; int index; }; struct snap_obd_data { int snap_dev; /* which device contains the data */ unsigned int snap_no; /* which snapshot are we accessing */ unsigned int snap_count; /* how many snapshots exist */ struct snap snap_snaps[SNAP_MAX]; /* times must be incr or attach will fail */ }; struct snap_obd { unsigned int snap_no; /* which snapshot are we accessing */ unsigned int snap_count; /* how many snapshots exist */ time_t snap_times[SNAP_MAX]; int snap_index[SNAP_MAX]; }; struct snap_object_data { int od_magic; /* id of snaps of object; slot 0 has the current data */ unsigned long od_ids[SNAP_MAX + 1]; }; #endif