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https://github.com/kdave/btrfs-progs
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btrfs-progs: check: Move link_inode_to_lostfound function to common.c
Reviewed-by: Su Yue <suy.fnst@cn.fujitsu.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo
David Sterba
parent
a20557599e
commit
4e84c8251a
@ -19,6 +19,7 @@
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#include "internal.h"
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#include "messages.h"
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#include "transaction.h"
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#include "utils.h"
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#include "check/common.h"
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/*
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@ -144,3 +145,95 @@ int insert_inode_item(struct btrfs_trans_handle *trans,
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return 0;
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}
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static int get_highest_inode(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, struct btrfs_path *path,
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u64 *highest_ino)
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{
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struct btrfs_key key, found_key;
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int ret;
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btrfs_init_path(path);
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key.objectid = BTRFS_LAST_FREE_OBJECTID;
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key.offset = -1;
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key.type = BTRFS_INODE_ITEM_KEY;
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ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
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if (ret == 1) {
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btrfs_item_key_to_cpu(path->nodes[0], &found_key,
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path->slots[0] - 1);
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*highest_ino = found_key.objectid;
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ret = 0;
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}
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if (*highest_ino >= BTRFS_LAST_FREE_OBJECTID)
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ret = -EOVERFLOW;
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btrfs_release_path(path);
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return ret;
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}
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/*
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* Link inode to dir 'lost+found'. Increase @ref_count.
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*
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* Returns 0 means success.
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* Returns <0 means failure.
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*/
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int link_inode_to_lostfound(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path,
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u64 ino, char *namebuf, u32 name_len,
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u8 filetype, u64 *ref_count)
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{
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char *dir_name = "lost+found";
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u64 lost_found_ino;
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int ret;
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u32 mode = 0700;
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btrfs_release_path(path);
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ret = get_highest_inode(trans, root, path, &lost_found_ino);
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if (ret < 0)
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goto out;
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lost_found_ino++;
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ret = btrfs_mkdir(trans, root, dir_name, strlen(dir_name),
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BTRFS_FIRST_FREE_OBJECTID, &lost_found_ino,
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mode);
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if (ret < 0) {
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error("failed to create '%s' dir: %s", dir_name, strerror(-ret));
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goto out;
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}
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ret = btrfs_add_link(trans, root, ino, lost_found_ino,
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namebuf, name_len, filetype, NULL, 1, 0);
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/*
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* Add ".INO" suffix several times to handle case where
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* "FILENAME.INO" is already taken by another file.
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*/
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while (ret == -EEXIST) {
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/*
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* Conflicting file name, add ".INO" as suffix * +1 for '.'
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*/
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if (name_len + count_digits(ino) + 1 > BTRFS_NAME_LEN) {
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ret = -EFBIG;
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goto out;
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}
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snprintf(namebuf + name_len, BTRFS_NAME_LEN - name_len,
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".%llu", ino);
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name_len += count_digits(ino) + 1;
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ret = btrfs_add_link(trans, root, ino, lost_found_ino, namebuf,
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name_len, filetype, NULL, 1, 0);
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}
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if (ret < 0) {
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error("failed to link the inode %llu to %s dir: %s",
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ino, dir_name, strerror(-ret));
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goto out;
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}
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++*ref_count;
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printf("Moving file '%.*s' to '%s' dir since it has no valid backref\n",
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name_len, namebuf, dir_name);
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out:
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btrfs_release_path(path);
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if (ret)
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error("failed to move file '%.*s' to '%s' dir", name_len,
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namebuf, dir_name);
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return ret;
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}
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@ -85,5 +85,10 @@ int count_csum_range(struct btrfs_fs_info *fs_info, u64 start,
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int insert_inode_item(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, u64 ino, u64 size,
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u64 nbytes, u64 nlink, u32 mode);
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int link_inode_to_lostfound(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path,
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u64 ino, char *namebuf, u32 name_len,
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u8 filetype, u64 *ref_count);
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#endif
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92
check/main.c
92
check/main.c
@ -2960,98 +2960,6 @@ out:
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return ret;
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}
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static int get_highest_inode(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path,
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u64 *highest_ino)
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{
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struct btrfs_key key, found_key;
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int ret;
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btrfs_init_path(path);
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key.objectid = BTRFS_LAST_FREE_OBJECTID;
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key.offset = -1;
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key.type = BTRFS_INODE_ITEM_KEY;
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ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
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if (ret == 1) {
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btrfs_item_key_to_cpu(path->nodes[0], &found_key,
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path->slots[0] - 1);
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*highest_ino = found_key.objectid;
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ret = 0;
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}
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if (*highest_ino >= BTRFS_LAST_FREE_OBJECTID)
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ret = -EOVERFLOW;
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btrfs_release_path(path);
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return ret;
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}
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/*
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* Link inode to dir 'lost+found'. Increase @ref_count.
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*
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* Returns 0 means success.
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* Returns <0 means failure.
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*/
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static int link_inode_to_lostfound(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path,
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u64 ino, char *namebuf, u32 name_len,
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u8 filetype, u64 *ref_count)
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{
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char *dir_name = "lost+found";
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u64 lost_found_ino;
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int ret;
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u32 mode = 0700;
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btrfs_release_path(path);
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ret = get_highest_inode(trans, root, path, &lost_found_ino);
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if (ret < 0)
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goto out;
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lost_found_ino++;
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ret = btrfs_mkdir(trans, root, dir_name, strlen(dir_name),
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BTRFS_FIRST_FREE_OBJECTID, &lost_found_ino,
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mode);
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if (ret < 0) {
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error("failed to create '%s' dir: %s", dir_name, strerror(-ret));
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goto out;
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}
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ret = btrfs_add_link(trans, root, ino, lost_found_ino,
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namebuf, name_len, filetype, NULL, 1, 0);
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/*
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* Add ".INO" suffix several times to handle case where
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* "FILENAME.INO" is already taken by another file.
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*/
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while (ret == -EEXIST) {
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/*
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* Conflicting file name, add ".INO" as suffix * +1 for '.'
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*/
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if (name_len + count_digits(ino) + 1 > BTRFS_NAME_LEN) {
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ret = -EFBIG;
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goto out;
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}
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snprintf(namebuf + name_len, BTRFS_NAME_LEN - name_len,
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".%llu", ino);
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name_len += count_digits(ino) + 1;
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ret = btrfs_add_link(trans, root, ino, lost_found_ino, namebuf,
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name_len, filetype, NULL, 1, 0);
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}
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if (ret < 0) {
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error("failed to link the inode %llu to %s dir: %s",
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ino, dir_name, strerror(-ret));
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goto out;
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}
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++*ref_count;
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printf("Moving file '%.*s' to '%s' dir since it has no valid backref\n",
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name_len, namebuf, dir_name);
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out:
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btrfs_release_path(path);
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if (ret)
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error("failed to move file '%.*s' to '%s' dir", name_len,
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namebuf, dir_name);
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return ret;
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}
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static int repair_inode_nlinks(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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struct btrfs_path *path,
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