+ return st;
+
+ st->minor_version = 9; /* flag for 'byte-swapped' */
+ if (strcmp(arg, "0.swap")==0)
+ return st;
+
+ free(st);
+ return NULL;
+}
+
+static __u64 avail_size0(struct supertype *st, __u64 devsize)
+{
+ if (devsize < MD_RESERVED_SECTORS)
+ return 0ULL;
+ return MD_NEW_SIZE_SECTORS(devsize);
+}
+
+static int add_internal_bitmap0(struct supertype *st, void *sbv, int *chunkp,
+ int delay, int write_behind,
+ unsigned long long size, int may_change,
+ int major)
+{
+ /*
+ * The bitmap comes immediately after the superblock and must be 60K in size
+ * at most. The default size is between 30K and 60K
+ *
+ * size is in sectors, chunk is in bytes !!!
+ */
+ unsigned long long bits;
+ unsigned long long max_bits = 60*1024*8;
+ unsigned long long min_chunk;
+ int chunk = *chunkp;
+ mdp_super_t *sb = sbv;
+ bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MD_SB_BYTES);
+
+
+ min_chunk = 4096; /* sub-page chunks don't work yet.. */
+ bits = (size * 512) / min_chunk + 1;
+ while (bits > max_bits) {
+ min_chunk *= 2;
+ bits = (bits+1)/2;
+ }
+ if (chunk == UnSet)
+ chunk = min_chunk;
+ else if (chunk < min_chunk)
+ return 0; /* chunk size too small */
+
+ sb->state |= (1<<MD_SB_BITMAP_PRESENT);
+
+ memset(bms, 0, sizeof(*bms));
+ bms->magic = __cpu_to_le32(BITMAP_MAGIC);
+ bms->version = __cpu_to_le32(major);
+ uuid_from_super0((int*)bms->uuid, sb);
+ bms->chunksize = __cpu_to_le32(chunk);
+ bms->daemon_sleep = __cpu_to_le32(delay);
+ bms->sync_size = __cpu_to_le64(size);
+ bms->write_behind = __cpu_to_le32(write_behind);
+ *chunkp = chunk;
+ return 1;
+}
+
+
+void locate_bitmap0(struct supertype *st, int fd, void *sbv)
+{
+ unsigned long long dsize;
+ unsigned long long offset;
+
+ if (!get_dev_size(fd, NULL, &dsize))
+ return;
+
+ if (dsize < MD_RESERVED_SECTORS*512)
+ return;
+
+ offset = MD_NEW_SIZE_SECTORS(dsize>>9);
+
+ offset *= 512;
+
+ offset += MD_SB_BYTES;
+
+ lseek64(fd, offset, 0);
+}
+
+int write_bitmap0(struct supertype *st, int fd, void *sbv)
+{
+ unsigned long long dsize;
+ unsigned long long offset;
+ mdp_super_t *sb = sbv;
+
+ int rv = 0;
+
+ int towrite, n;
+ char buf[4096];
+
+ if (!get_dev_size(fd, NULL, &dsize))