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btrfs-progs: convert: rename ext2_root to image_root

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In preparation to extend to other file systems, rename ext2_root to
image_root.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
Jeff Mahoney 2013-08-14 13:44:21 -04:00 committed by David Sterba
parent 9b288f868b
commit 81e43b4b76
1 changed files with 19 additions and 19 deletions
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38
btrfs-convert.c
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@ -42,7 +42,7 @@
#include <ext2fs/ext2_ext_attr.h> #include <ext2fs/ext2_ext_attr.h>
#define INO_OFFSET (BTRFS_FIRST_FREE_OBJECTID - EXT2_ROOT_INO) #define INO_OFFSET (BTRFS_FIRST_FREE_OBJECTID - EXT2_ROOT_INO)
#define EXT2_IMAGE_SUBVOL_OBJECTID BTRFS_FIRST_FREE_OBJECTID #define CONV_IMAGE_SUBVOL_OBJECTID BTRFS_FIRST_FREE_OBJECTID
struct task_ctx { struct task_ctx {
uint32_t max_copy_inodes; uint32_t max_copy_inodes;
@ -1699,7 +1699,7 @@ static int init_btrfs(struct btrfs_root *root)
BTRFS_FIRST_FREE_OBJECTID); BTRFS_FIRST_FREE_OBJECTID);
/* subvol for ext2 image file */ /* subvol for ext2 image file */
ret = create_subvol(trans, root, EXT2_IMAGE_SUBVOL_OBJECTID); ret = create_subvol(trans, root, CONV_IMAGE_SUBVOL_OBJECTID);
BUG_ON(ret); BUG_ON(ret);
/* subvol for data relocation */ /* subvol for data relocation */
ret = create_subvol(trans, root, BTRFS_DATA_RELOC_TREE_OBJECTID); ret = create_subvol(trans, root, BTRFS_DATA_RELOC_TREE_OBJECTID);
@ -1980,7 +1980,7 @@ fail:
} }
static int relocate_extents_range(struct btrfs_root *fs_root, static int relocate_extents_range(struct btrfs_root *fs_root,
struct btrfs_root *ext2_root, struct btrfs_root *image_root,
u64 start_byte, u64 end_byte) u64 start_byte, u64 end_byte)
{ {
struct btrfs_fs_info *info = fs_root->fs_info; struct btrfs_fs_info *info = fs_root->fs_info;
@ -2027,7 +2027,7 @@ static int relocate_extents_range(struct btrfs_root *fs_root,
} }
btrfs_release_path(&path); btrfs_release_path(&path);
again: again:
cur_root = (pass % 2 == 0) ? ext2_root : fs_root; cur_root = (pass % 2 == 0) ? image_root : fs_root;
num_extents = 0; num_extents = 0;
trans = btrfs_start_transaction(cur_root, 1); trans = btrfs_start_transaction(cur_root, 1);
@ -2135,7 +2135,7 @@ fail:
* relocate data in system chunk * relocate data in system chunk
*/ */
static int cleanup_sys_chunk(struct btrfs_root *fs_root, static int cleanup_sys_chunk(struct btrfs_root *fs_root,
struct btrfs_root *ext2_root) struct btrfs_root *image_root)
{ {
struct btrfs_block_group_cache *cache; struct btrfs_block_group_cache *cache;
int i, ret = 0; int i, ret = 0;
@ -2149,7 +2149,7 @@ static int cleanup_sys_chunk(struct btrfs_root *fs_root,
end_byte = cache->key.objectid + cache->key.offset; end_byte = cache->key.objectid + cache->key.offset;
if (cache->flags & BTRFS_BLOCK_GROUP_SYSTEM) { if (cache->flags & BTRFS_BLOCK_GROUP_SYSTEM) {
ret = relocate_extents_range(fs_root, ext2_root, ret = relocate_extents_range(fs_root, image_root,
cache->key.objectid, cache->key.objectid,
end_byte); end_byte);
if (ret) if (ret)
@ -2161,7 +2161,7 @@ static int cleanup_sys_chunk(struct btrfs_root *fs_root,
offset = btrfs_sb_offset(i); offset = btrfs_sb_offset(i);
offset &= ~((u64)BTRFS_STRIPE_LEN - 1); offset &= ~((u64)BTRFS_STRIPE_LEN - 1);
ret = relocate_extents_range(fs_root, ext2_root, ret = relocate_extents_range(fs_root, image_root,
offset, offset + BTRFS_STRIPE_LEN); offset, offset + BTRFS_STRIPE_LEN);
if (ret) if (ret)
goto fail; goto fail;
@ -2272,7 +2272,7 @@ static int do_convert(const char *devname, int datacsum, int packing, int noxatt
u64 super_bytenr; u64 super_bytenr;
ext2_filsys ext2_fs; ext2_filsys ext2_fs;
struct btrfs_root *root; struct btrfs_root *root;
struct btrfs_root *ext2_root; struct btrfs_root *image_root;
struct task_ctx ctx; struct task_ctx ctx;
char features_buf[64]; char features_buf[64];
@ -2381,12 +2381,12 @@ static int do_convert(const char *devname, int datacsum, int packing, int noxatt
task_deinit(ctx.info); task_deinit(ctx.info);
} }
printf("creating ext2fs image file.\n"); printf("creating ext2fs image file.\n");
ext2_root = link_subvol(root, "ext2_saved", EXT2_IMAGE_SUBVOL_OBJECTID); image_root = link_subvol(root, "ext2_saved", CONV_IMAGE_SUBVOL_OBJECTID);
if (!ext2_root) { if (!image_root) {
fprintf(stderr, "unable to create subvol\n"); fprintf(stderr, "unable to create subvol\n");
goto fail; goto fail;
} }
ret = create_ext2_image(ext2_root, ext2_fs, "image", datacsum); ret = create_ext2_image(image_root, ext2_fs, "image", datacsum);
if (ret) { if (ret) {
fprintf(stderr, "error during create_ext2_image %d\n", ret); fprintf(stderr, "error during create_ext2_image %d\n", ret);
goto fail; goto fail;
@ -2403,7 +2403,7 @@ static int do_convert(const char *devname, int datacsum, int packing, int noxatt
} }
printf("cleaning up system chunk.\n"); printf("cleaning up system chunk.\n");
ret = cleanup_sys_chunk(root, ext2_root); ret = cleanup_sys_chunk(root, image_root);
if (ret) { if (ret) {
fprintf(stderr, "error during cleanup_sys_chunk %d\n", ret); fprintf(stderr, "error during cleanup_sys_chunk %d\n", ret);
goto fail; goto fail;
@ -2502,7 +2502,7 @@ static int do_rollback(const char *devname)
int ret; int ret;
int i; int i;
struct btrfs_root *root; struct btrfs_root *root;
struct btrfs_root *ext2_root; struct btrfs_root *image_root;
struct btrfs_root *chunk_root; struct btrfs_root *chunk_root;
struct btrfs_dir_item *dir; struct btrfs_dir_item *dir;
struct btrfs_inode_item *inode; struct btrfs_inode_item *inode;
@ -2555,11 +2555,11 @@ static int do_rollback(const char *devname)
btrfs_init_path(&path); btrfs_init_path(&path);
key.objectid = EXT2_IMAGE_SUBVOL_OBJECTID; key.objectid = CONV_IMAGE_SUBVOL_OBJECTID;
key.type = BTRFS_ROOT_ITEM_KEY; key.type = BTRFS_ROOT_ITEM_KEY;
key.offset = (u64)-1; key.offset = (u64)-1;
ext2_root = btrfs_read_fs_root(root->fs_info, &key); image_root = btrfs_read_fs_root(root->fs_info, &key);
if (!ext2_root || IS_ERR(ext2_root)) { if (!image_root || IS_ERR(image_root)) {
fprintf(stderr, "unable to open subvol %llu\n", fprintf(stderr, "unable to open subvol %llu\n",
(unsigned long long)key.objectid); (unsigned long long)key.objectid);
goto fail; goto fail;
@ -2567,7 +2567,7 @@ static int do_rollback(const char *devname)
name = "image"; name = "image";
root_dir = btrfs_root_dirid(&root->root_item); root_dir = btrfs_root_dirid(&root->root_item);
dir = btrfs_lookup_dir_item(NULL, ext2_root, &path, dir = btrfs_lookup_dir_item(NULL, image_root, &path,
root_dir, name, strlen(name), 0); root_dir, name, strlen(name), 0);
if (!dir || IS_ERR(dir)) { if (!dir || IS_ERR(dir)) {
fprintf(stderr, "unable to find file %s\n", name); fprintf(stderr, "unable to find file %s\n", name);
@ -2579,7 +2579,7 @@ static int do_rollback(const char *devname)
objectid = key.objectid; objectid = key.objectid;
ret = btrfs_lookup_inode(NULL, ext2_root, &path, &key, 0); ret = btrfs_lookup_inode(NULL, image_root, &path, &key, 0);
if (ret) { if (ret) {
fprintf(stderr, "unable to find inode item\n"); fprintf(stderr, "unable to find inode item\n");
goto fail; goto fail;
@ -2592,7 +2592,7 @@ static int do_rollback(const char *devname)
key.objectid = objectid; key.objectid = objectid;
key.offset = 0; key.offset = 0;
btrfs_set_key_type(&key, BTRFS_EXTENT_DATA_KEY); btrfs_set_key_type(&key, BTRFS_EXTENT_DATA_KEY);
ret = btrfs_search_slot(NULL, ext2_root, &key, &path, 0, 0); ret = btrfs_search_slot(NULL, image_root, &key, &path, 0, 0);
if (ret != 0) { if (ret != 0) {
fprintf(stderr, "unable to find first file extent\n"); fprintf(stderr, "unable to find first file extent\n");
btrfs_release_path(&path); btrfs_release_path(&path);