diff options
Diffstat (limited to 'bcache.c')
| -rw-r--r-- | bcache.c | 68 |
1 files changed, 0 insertions, 68 deletions
@@ -22,10 +22,6 @@ #include "bcache.h" -#define __KERNEL__ -#include <linux/bcache-ioctl.h> -#undef __KERNEL__ - const char * const cache_state[] = { "active", "ro", @@ -464,70 +460,6 @@ unsigned hatoi_validate(const char *s, const char *msg) return v; } -void do_write_sb(int fd, struct cache_sb *sb) -{ - char zeroes[SB_START] = {0}; - size_t bytes = ((void *) __bset_bkey_last(sb)) - (void *) sb; - - /* Zero start of disk */ - if (pwrite(fd, zeroes, SB_START, 0) != SB_START) { - perror("write error trying to zero start of disk\n"); - exit(EXIT_FAILURE); - } - /* Write superblock */ - if (pwrite(fd, sb, bytes, SB_START) != bytes) { - perror("write error trying to write superblock\n"); - exit(EXIT_FAILURE); - } - - fsync(fd); - close(fd); -} - -void write_backingdev_sb(int fd, unsigned block_size, unsigned mode, - uint64_t data_offset, const char *label, - uuid_le user_uuid, uuid_le set_uuid) -{ - char uuid_str[40], set_uuid_str[40]; - struct cache_sb sb; - - memset(&sb, 0, sizeof(struct cache_sb)); - - sb.offset = SB_SECTOR; - sb.version = BCACHE_SB_VERSION_BDEV; - sb.magic = BCACHE_MAGIC; - uuid_generate(sb.disk_uuid.b); - sb.user_uuid = user_uuid; - sb.set_uuid = set_uuid; - sb.block_size = block_size; - - uuid_unparse(sb.disk_uuid.b, uuid_str); - uuid_unparse(sb.user_uuid.b, set_uuid_str); - if (label) - memcpy(sb.label, label, SB_LABEL_SIZE); - - SET_BDEV_CACHE_MODE(&sb, mode); - - if (data_offset != BDEV_DATA_START_DEFAULT) { - sb.version = BCACHE_SB_VERSION_BDEV_WITH_OFFSET; - sb.bdev_data_offset = data_offset; - } - - sb.csum = csum_set(&sb, BCH_CSUM_CRC64); - - printf("UUID: %s\n" - "Set UUID: %s\n" - "version: %u\n" - "block_size: %u\n" - "data_offset: %ju\n", - uuid_str, set_uuid_str, - (unsigned) sb.version, - sb.block_size, - data_offset); - - do_write_sb(fd, &sb); -} - int dev_open(const char *dev) { blkid_probe pr; |