2 * Copyright (c) 2015 Grzegorz Kostka (kostka.grzegorz@gmail.com)
3 * Copyright (c) 2015 Kaho Ng (ngkaho1234@gmail.com)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 /** @addtogroup lwext4
33 * @file ext4_journal.h
34 * @brief Journal handle functions
37 #ifndef EXT4_JOURNAL_H_
38 #define EXT4_JOURNAL_H_
44 #include "ext4_config.h"
45 #include "ext4_types.h"
46 #include "misc/queue.h"
47 #include "misc/tree.h"
50 struct ext4_blockdev *bdev;
51 struct ext4_inode_ref inode_ref;
59 struct ext4_block block;
60 struct jbd_trans *trans;
61 struct jbd_block_rec *block_rec;
62 TAILQ_ENTRY(jbd_buf) buf_node;
63 TAILQ_ENTRY(jbd_buf) dirty_buf_node;
66 struct jbd_revoke_rec {
68 RB_ENTRY(jbd_revoke_rec) revoke_node;
71 struct jbd_block_rec {
73 struct jbd_trans *trans;
74 RB_ENTRY(jbd_block_rec) block_rec_node;
75 LIST_ENTRY(jbd_block_rec) tbrec_node;
76 TAILQ_HEAD(jbd_buf_dirty, jbd_buf) dirty_buf_queue;
82 uint32_t start_iblock;
89 struct jbd_journal *journal;
91 TAILQ_HEAD(jbd_trans_buf, jbd_buf) buf_queue;
92 RB_HEAD(jbd_revoke_tree, jbd_revoke_rec) revoke_root;
93 LIST_HEAD(jbd_trans_block_rec, jbd_block_rec) tbrec_list;
94 TAILQ_ENTRY(jbd_trans) trans_node;
102 uint32_t alloc_trans_id;
106 TAILQ_HEAD(jbd_cp_queue, jbd_trans) cp_queue;
107 RB_HEAD(jbd_block, jbd_block_rec) block_rec_root;
109 struct jbd_fs *jbd_fs;
112 int jbd_get_fs(struct ext4_fs *fs,
113 struct jbd_fs *jbd_fs);
114 int jbd_put_fs(struct jbd_fs *jbd_fs);
115 int jbd_inode_bmap(struct jbd_fs *jbd_fs,
117 ext4_fsblk_t *fblock);
118 int jbd_recover(struct jbd_fs *jbd_fs);
119 int jbd_journal_start(struct jbd_fs *jbd_fs,
120 struct jbd_journal *journal);
121 int jbd_journal_stop(struct jbd_journal *journal);
123 jbd_journal_new_trans(struct jbd_journal *journal);
124 int jbd_trans_set_block_dirty(struct jbd_trans *trans,
125 struct ext4_block *block);
126 int jbd_trans_revoke_block(struct jbd_trans *trans,
128 int jbd_trans_try_revoke_block(struct jbd_trans *trans,
130 void jbd_journal_free_trans(struct jbd_journal *journal,
131 struct jbd_trans *trans,
133 int jbd_journal_commit_trans(struct jbd_journal *journal,
134 struct jbd_trans *trans);
136 jbd_journal_purge_cp_trans(struct jbd_journal *journal,
144 #endif /* EXT4_JOURNAL_H_ */