btrfs-progs: mkfs: Replace number with enum

[platform/upstream/btrfs-progs.git] / mkfs / common.c

diff --git a/mkfs/common.c b/mkfs/common.c
index e4785c5..6ee1cd1 100644 (file)
--- a/mkfs/common.c
+++ b/mkfs/common.c
@@ -93,18 +93,18 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
        uuid_generate(super.dev_item.uuid);
        uuid_generate(chunk_tree_uuid);
 
-       cfg->blocks[0] = BTRFS_SUPER_INFO_OFFSET;
-       for (i = 1; i < 7; i++) {
+       cfg->blocks[MKFS_SUPER_BLOCK] = BTRFS_SUPER_INFO_OFFSET;
+       for (i = 1; i < MKFS_BLOCK_COUNT; i++) {
                cfg->blocks[i] = BTRFS_SUPER_INFO_OFFSET + 1024 * 1024 +
                        cfg->nodesize * i;
        }
 
-       btrfs_set_super_bytenr(&super, cfg->blocks[0]);
+       btrfs_set_super_bytenr(&super, cfg->blocks[MKFS_SUPER_BLOCK]);
        btrfs_set_super_num_devices(&super, 1);
        btrfs_set_super_magic(&super, BTRFS_MAGIC_PARTIAL);
        btrfs_set_super_generation(&super, 1);
-       btrfs_set_super_root(&super, cfg->blocks[1]);
-       btrfs_set_super_chunk_root(&super, cfg->blocks[3]);
+       btrfs_set_super_root(&super, cfg->blocks[MKFS_ROOT_TREE]);
+       btrfs_set_super_chunk_root(&super, cfg->blocks[MKFS_CHUNK_TREE]);
        btrfs_set_super_total_bytes(&super, num_bytes);
        btrfs_set_super_bytes_used(&super, 6 * cfg->nodesize);
        btrfs_set_super_sectorsize(&super, cfg->sectorsize);
@@ -121,7 +121,7 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
        /* create the tree of root objects */
        memset(buf->data, 0, cfg->nodesize);
        buf->len = cfg->nodesize;
-       btrfs_set_header_bytenr(buf, cfg->blocks[1]);
+       btrfs_set_header_bytenr(buf, cfg->blocks[MKFS_ROOT_TREE]);
        btrfs_set_header_nritems(buf, 4);
        btrfs_set_header_generation(buf, 1);
        btrfs_set_header_backref_rev(buf, BTRFS_MIXED_BACKREF_REV);
@@ -151,7 +151,7 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
        nritems = 0;
 
        itemoff = __BTRFS_LEAF_DATA_SIZE(cfg->nodesize) - sizeof(root_item);
-       btrfs_set_root_bytenr(&root_item, cfg->blocks[2]);
+       btrfs_set_root_bytenr(&root_item, cfg->blocks[MKFS_EXTENT_TREE]);
        btrfs_set_disk_key_objectid(&disk_key, BTRFS_EXTENT_TREE_OBJECTID);
        btrfs_set_item_key(buf, &disk_key, nritems);
        btrfs_set_item_offset(buf, btrfs_item_nr(nritems), itemoff);
@@ -162,7 +162,7 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
        nritems++;
 
        itemoff = itemoff - sizeof(root_item);
-       btrfs_set_root_bytenr(&root_item, cfg->blocks[4]);
+       btrfs_set_root_bytenr(&root_item, cfg->blocks[MKFS_DEV_TREE]);
        btrfs_set_disk_key_objectid(&disk_key, BTRFS_DEV_TREE_OBJECTID);
        btrfs_set_item_key(buf, &disk_key, nritems);
        btrfs_set_item_offset(buf, btrfs_item_nr(nritems), itemoff);
@@ -174,7 +174,7 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
        nritems++;
 
        itemoff = itemoff - sizeof(root_item);
-       btrfs_set_root_bytenr(&root_item, cfg->blocks[5]);
+       btrfs_set_root_bytenr(&root_item, cfg->blocks[MKFS_FS_TREE]);
        btrfs_set_disk_key_objectid(&disk_key, BTRFS_FS_TREE_OBJECTID);
        btrfs_set_item_key(buf, &disk_key, nritems);
        btrfs_set_item_offset(buf, btrfs_item_nr(nritems), itemoff);
@@ -186,7 +186,7 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
        nritems++;
 
        itemoff = itemoff - sizeof(root_item);
-       btrfs_set_root_bytenr(&root_item, cfg->blocks[6]);
+       btrfs_set_root_bytenr(&root_item, cfg->blocks[MKFS_CSUM_TREE]);
        btrfs_set_disk_key_objectid(&disk_key, BTRFS_CSUM_TREE_OBJECTID);
        btrfs_set_item_key(buf, &disk_key, nritems);
        btrfs_set_item_offset(buf, btrfs_item_nr(nritems), itemoff);
@@ -199,7 +199,7 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
 
 
        csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
-       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[1]);
+       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[MKFS_ROOT_TREE]);
        if (ret != cfg->nodesize) {
                ret = (ret < 0 ? -errno : -EIO);
                goto out;
@@ -210,7 +210,7 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
                cfg->nodesize - sizeof(struct btrfs_header));
        nritems = 0;
        itemoff = __BTRFS_LEAF_DATA_SIZE(cfg->nodesize);
-       for (i = 1; i < 7; i++) {
+       for (i = 1; i < MKFS_BLOCK_COUNT; i++) {
                item_size = sizeof(struct btrfs_extent_item);
                if (!skinny_metadata)
                        item_size += sizeof(struct btrfs_tree_block_info);
@@ -267,11 +267,11 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
                btrfs_set_item_size(buf, btrfs_item_nr(nritems), 0);
                nritems++;
        }
-       btrfs_set_header_bytenr(buf, cfg->blocks[2]);
+       btrfs_set_header_bytenr(buf, cfg->blocks[MKFS_EXTENT_TREE]);
        btrfs_set_header_owner(buf, BTRFS_EXTENT_TREE_OBJECTID);
        btrfs_set_header_nritems(buf, nritems);
        csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
-       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[2]);
+       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[MKFS_EXTENT_TREE]);
        if (ret != cfg->nodesize) {
                ret = (ret < 0 ? -errno : -EIO);
                goto out;
@@ -354,11 +354,11 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
        ptr += item_size;
        btrfs_set_super_sys_array_size(&super, array_size);
 
-       btrfs_set_header_bytenr(buf, cfg->blocks[3]);
+       btrfs_set_header_bytenr(buf, cfg->blocks[MKFS_CHUNK_TREE]);
        btrfs_set_header_owner(buf, BTRFS_CHUNK_TREE_OBJECTID);
        btrfs_set_header_nritems(buf, nritems);
        csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
-       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[3]);
+       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[MKFS_CHUNK_TREE]);
        if (ret != cfg->nodesize) {
                ret = (ret < 0 ? -errno : -EIO);
                goto out;
@@ -393,11 +393,11 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
                                    BTRFS_MKFS_SYSTEM_GROUP_SIZE);
        nritems++;
 
-       btrfs_set_header_bytenr(buf, cfg->blocks[4]);
+       btrfs_set_header_bytenr(buf, cfg->blocks[MKFS_DEV_TREE]);
        btrfs_set_header_owner(buf, BTRFS_DEV_TREE_OBJECTID);
        btrfs_set_header_nritems(buf, nritems);
        csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
-       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[4]);
+       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[MKFS_DEV_TREE]);
        if (ret != cfg->nodesize) {
                ret = (ret < 0 ? -errno : -EIO);
                goto out;
@@ -406,11 +406,11 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
        /* create the FS root */
        memset(buf->data + sizeof(struct btrfs_header), 0,
                cfg->nodesize - sizeof(struct btrfs_header));
-       btrfs_set_header_bytenr(buf, cfg->blocks[5]);
+       btrfs_set_header_bytenr(buf, cfg->blocks[MKFS_FS_TREE]);
        btrfs_set_header_owner(buf, BTRFS_FS_TREE_OBJECTID);
        btrfs_set_header_nritems(buf, 0);
        csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
-       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[5]);
+       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[MKFS_FS_TREE]);
        if (ret != cfg->nodesize) {
                ret = (ret < 0 ? -errno : -EIO);
                goto out;
@@ -418,11 +418,11 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
        /* finally create the csum root */
        memset(buf->data + sizeof(struct btrfs_header), 0,
                cfg->nodesize - sizeof(struct btrfs_header));
-       btrfs_set_header_bytenr(buf, cfg->blocks[6]);
+       btrfs_set_header_bytenr(buf, cfg->blocks[MKFS_CSUM_TREE]);
        btrfs_set_header_owner(buf, BTRFS_CSUM_TREE_OBJECTID);
        btrfs_set_header_nritems(buf, 0);
        csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
-       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[6]);
+       ret = pwrite(fd, buf->data, cfg->nodesize, cfg->blocks[MKFS_CSUM_TREE]);
        if (ret != cfg->nodesize) {
                ret = (ret < 0 ? -errno : -EIO);
                goto out;
@@ -433,7 +433,8 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
        memcpy(buf->data, &super, sizeof(super));
        buf->len = BTRFS_SUPER_INFO_SIZE;
        csum_tree_block_size(buf, BTRFS_CRC32_SIZE, 0);
-       ret = pwrite(fd, buf->data, BTRFS_SUPER_INFO_SIZE, cfg->blocks[0]);
+       ret = pwrite(fd, buf->data, BTRFS_SUPER_INFO_SIZE,
+                       cfg->blocks[MKFS_SUPER_BLOCK]);
        if (ret != BTRFS_SUPER_INFO_SIZE) {
                ret = (ret < 0 ? -errno : -EIO);
                goto out;