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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:49:25 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:49:25 +0000
commit464df1d5e5ab1322e2dd0a7796939fff1aeefa9a (patch)
tree6a403684e0978f0287d7f0ec0e5aab1fd31a59e1 /lib/ext2fs/brel.h
parentInitial commit. (diff)
downloade2fsprogs-464df1d5e5ab1322e2dd0a7796939fff1aeefa9a.tar.xz
e2fsprogs-464df1d5e5ab1322e2dd0a7796939fff1aeefa9a.zip
Adding upstream version 1.47.0.upstream/1.47.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--lib/ext2fs/brel.h86
1 files changed, 86 insertions, 0 deletions
diff --git a/lib/ext2fs/brel.h b/lib/ext2fs/brel.h
new file mode 100644
index 0000000..9fdddd4
--- /dev/null
+++ b/lib/ext2fs/brel.h
@@ -0,0 +1,86 @@
+/*
+ * brel.h
+ *
+ * Copyright (C) 1996, 1997 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
+ * %End-Header%
+ */
+
+struct ext2_block_relocate_entry {
+ blk64_t new;
+ __s16 offset;
+ __u16 flags;
+ union {
+ blk64_t block_ref;
+ ext2_ino_t inode_ref;
+ } owner;
+};
+
+#define RELOCATE_TYPE_REF 0x0007
+#define RELOCATE_BLOCK_REF 0x0001
+#define RELOCATE_INODE_REF 0x0002
+
+typedef struct ext2_block_relocation_table *ext2_brel;
+
+struct ext2_block_relocation_table {
+ __u32 magic;
+ char *name;
+ blk64_t current;
+ void *priv_data;
+
+ /*
+ * Add a block relocation entry.
+ */
+ errcode_t (*put)(ext2_brel brel, blk64_t old,
+ struct ext2_block_relocate_entry *ent);
+
+ /*
+ * Get a block relocation entry.
+ */
+ errcode_t (*get)(ext2_brel brel, blk64_t old,
+ struct ext2_block_relocate_entry *ent);
+
+ /*
+ * Initialize for iterating over the block relocation entries.
+ */
+ errcode_t (*start_iter)(ext2_brel brel);
+
+ /*
+ * The iterator function for the inode relocation entries.
+ * Returns an inode number of 0 when out of entries.
+ */
+ errcode_t (*next)(ext2_brel brel, blk64_t *old,
+ struct ext2_block_relocate_entry *ent);
+
+ /*
+ * Move the inode relocation table from one block number to
+ * another.
+ */
+ errcode_t (*move)(ext2_brel brel, blk64_t old, blk_t new);
+
+ /*
+ * Remove a block relocation entry.
+ */
+ errcode_t (*delete)(ext2_brel brel, blk64_t old);
+
+
+ /*
+ * Free the block relocation table.
+ */
+ errcode_t (*free)(ext2_brel brel);
+};
+
+errcode_t ext2fs_brel_memarray_create(char *name, blk64_t max_block,
+ ext2_brel *brel);
+
+#define ext2fs_brel_put(brel, old, ent) ((brel)->put((brel), old, ent))
+#define ext2fs_brel_get(brel, old, ent) ((brel)->get((brel), old, ent))
+#define ext2fs_brel_start_iter(brel) ((brel)->start_iter((brel)))
+#define ext2fs_brel_next(brel, old, ent) ((brel)->next((brel), old, ent))
+#define ext2fs_brel_move(brel, old, new) ((brel)->move((brel), old, new))
+#define ext2fs_brel_delete(brel, old) ((brel)->delete((brel), old))
+#define ext2fs_brel_free(brel) ((brel)->free((brel)))
+