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Diffstat (limited to 'fs/squashfs/squashfs_fs.h')
-rw-r--r--fs/squashfs/squashfs_fs.h132
1 files changed, 104 insertions, 28 deletions
diff --git a/fs/squashfs/squashfs_fs.h b/fs/squashfs/squashfs_fs.h
index 283daafc568..4b2beda4949 100644
--- a/fs/squashfs/squashfs_fs.h
+++ b/fs/squashfs/squashfs_fs.h
@@ -4,7 +4,7 @@
* Squashfs
*
* Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
- * Phillip Lougher <phillip@lougher.demon.co.uk>
+ * Phillip Lougher <phillip@squashfs.org.uk>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -30,22 +30,25 @@
/* size of metadata (inode and directory) blocks */
#define SQUASHFS_METADATA_SIZE 8192
-#define SQUASHFS_METADATA_LOG 13
-/* default size of data blocks */
-#define SQUASHFS_FILE_SIZE 131072
-#define SQUASHFS_FILE_LOG 17
+/* default size of block device I/O */
+#ifdef CONFIG_SQUASHFS_4K_DEVBLK_SIZE
+#define SQUASHFS_DEVBLK_SIZE 4096
+#else
+#define SQUASHFS_DEVBLK_SIZE 1024
+#endif
#define SQUASHFS_FILE_MAX_SIZE 1048576
#define SQUASHFS_FILE_MAX_LOG 20
-/* Max number of uids and gids */
-#define SQUASHFS_IDS 65536
-
/* Max length of filename (not 255) */
#define SQUASHFS_NAME_LEN 256
+/* Max value for directory header count*/
+#define SQUASHFS_DIR_COUNT 256
+
#define SQUASHFS_INVALID_FRAG (0xffffffffU)
+#define SQUASHFS_INVALID_XATTR (0xffffffffU)
#define SQUASHFS_INVALID_BLK (-1LL)
/* Filesystem flags */
@@ -56,6 +59,7 @@
#define SQUASHFS_ALWAYS_FRAG 5
#define SQUASHFS_DUPLICATE 6
#define SQUASHFS_EXPORT 7
+#define SQUASHFS_COMP_OPT 10
#define SQUASHFS_BIT(flag, bit) ((flag >> bit) & 1)
@@ -80,7 +84,10 @@
#define SQUASHFS_EXPORTABLE(flags) SQUASHFS_BIT(flags, \
SQUASHFS_EXPORT)
-/* Max number of types and file types */
+#define SQUASHFS_COMP_OPTS(flags) SQUASHFS_BIT(flags, \
+ SQUASHFS_COMP_OPT)
+
+/* Inode types including extended types */
#define SQUASHFS_DIR_TYPE 1
#define SQUASHFS_REG_TYPE 2
#define SQUASHFS_SYMLINK_TYPE 3
@@ -96,6 +103,16 @@
#define SQUASHFS_LFIFO_TYPE 13
#define SQUASHFS_LSOCKET_TYPE 14
+/* Max type value stored in directory entry */
+#define SQUASHFS_MAX_DIR_TYPE 7
+
+/* Xattr types */
+#define SQUASHFS_XATTR_USER 0
+#define SQUASHFS_XATTR_TRUSTED 1
+#define SQUASHFS_XATTR_SECURITY 2
+#define SQUASHFS_XATTR_VALUE_OOL 256
+#define SQUASHFS_XATTR_PREFIX_MASK 0xff
+
/* Flag whether block is compressed or uncompressed, bit is set if block is
* uncompressed */
#define SQUASHFS_COMPRESSED_BIT (1 << 15)
@@ -123,9 +140,6 @@
#define SQUASHFS_MKINODE(A, B) ((long long)(((long long) (A)\
<< 16) + (B)))
-/* Translate between VFS mode and squashfs mode */
-#define SQUASHFS_MODE(A) ((A) & 0xfff)
-
/* fragment and fragment table defines */
#define SQUASHFS_FRAGMENT_BYTES(A) \
((A) * sizeof(struct squashfs_fragment_entry))
@@ -174,16 +188,27 @@
#define SQUASHFS_ID_BLOCK_BYTES(A) (SQUASHFS_ID_BLOCKS(A) *\
sizeof(u64))
+/* xattr id lookup table defines */
+#define SQUASHFS_XATTR_BYTES(A) ((A) * sizeof(struct squashfs_xattr_id))
-/* cached data constants for filesystem */
-#define SQUASHFS_CACHED_BLKS 8
+#define SQUASHFS_XATTR_BLOCK(A) (SQUASHFS_XATTR_BYTES(A) / \
+ SQUASHFS_METADATA_SIZE)
+
+#define SQUASHFS_XATTR_BLOCK_OFFSET(A) (SQUASHFS_XATTR_BYTES(A) % \
+ SQUASHFS_METADATA_SIZE)
-#define SQUASHFS_MAX_FILE_SIZE_LOG 64
+#define SQUASHFS_XATTR_BLOCKS(A) ((SQUASHFS_XATTR_BYTES(A) + \
+ SQUASHFS_METADATA_SIZE - 1) / \
+ SQUASHFS_METADATA_SIZE)
-#define SQUASHFS_MAX_FILE_SIZE (1LL << \
- (SQUASHFS_MAX_FILE_SIZE_LOG - 2))
+#define SQUASHFS_XATTR_BLOCK_BYTES(A) (SQUASHFS_XATTR_BLOCKS(A) *\
+ sizeof(u64))
+#define SQUASHFS_XATTR_BLK(A) ((unsigned int) ((A) >> 16))
-#define SQUASHFS_MARKER_BYTE 0xff
+#define SQUASHFS_XATTR_OFFSET(A) ((unsigned int) ((A) & 0xffff))
+
+/* cached data constants for filesystem */
+#define SQUASHFS_CACHED_BLKS 8
/* meta index cache */
#define SQUASHFS_META_INDEXES (SQUASHFS_METADATA_SIZE / sizeof(unsigned int))
@@ -211,7 +236,10 @@ struct meta_index {
/*
* definitions for structures on disk
*/
-#define ZLIB_COMPRESSION 1
+#define ZLIB_COMPRESSION 1
+#define LZMA_COMPRESSION 2
+#define LZO_COMPRESSION 3
+#define XZ_COMPRESSION 4
struct squashfs_super_block {
__le32 s_magic;
@@ -228,7 +256,7 @@ struct squashfs_super_block {
__le64 root_inode;
__le64 bytes_used;
__le64 id_table_start;
- __le64 xattr_table_start;
+ __le64 xattr_id_table_start;
__le64 inode_table_start;
__le64 directory_table_start;
__le64 fragment_table_start;
@@ -248,7 +276,7 @@ struct squashfs_base_inode {
__le16 uid;
__le16 guid;
__le32 mtime;
- __le32 inode_number;
+ __le32 inode_number;
};
struct squashfs_ipc_inode {
@@ -257,28 +285,51 @@ struct squashfs_ipc_inode {
__le16 uid;
__le16 guid;
__le32 mtime;
- __le32 inode_number;
+ __le32 inode_number;
__le32 nlink;
};
+struct squashfs_lipc_inode {
+ __le16 inode_type;
+ __le16 mode;
+ __le16 uid;
+ __le16 guid;
+ __le32 mtime;
+ __le32 inode_number;
+ __le32 nlink;
+ __le32 xattr;
+};
+
struct squashfs_dev_inode {
__le16 inode_type;
__le16 mode;
__le16 uid;
__le16 guid;
__le32 mtime;
- __le32 inode_number;
+ __le32 inode_number;
__le32 nlink;
__le32 rdev;
};
+struct squashfs_ldev_inode {
+ __le16 inode_type;
+ __le16 mode;
+ __le16 uid;
+ __le16 guid;
+ __le32 mtime;
+ __le32 inode_number;
+ __le32 nlink;
+ __le32 rdev;
+ __le32 xattr;
+};
+
struct squashfs_symlink_inode {
__le16 inode_type;
__le16 mode;
__le16 uid;
__le16 guid;
__le32 mtime;
- __le32 inode_number;
+ __le32 inode_number;
__le32 nlink;
__le32 symlink_size;
char symlink[0];
@@ -290,7 +341,7 @@ struct squashfs_reg_inode {
__le16 uid;
__le16 guid;
__le32 mtime;
- __le32 inode_number;
+ __le32 inode_number;
__le32 start_block;
__le32 fragment;
__le32 offset;
@@ -304,7 +355,7 @@ struct squashfs_lreg_inode {
__le16 uid;
__le16 guid;
__le32 mtime;
- __le32 inode_number;
+ __le32 inode_number;
__le64 start_block;
__le64 file_size;
__le64 sparse;
@@ -321,7 +372,7 @@ struct squashfs_dir_inode {
__le16 uid;
__le16 guid;
__le32 mtime;
- __le32 inode_number;
+ __le32 inode_number;
__le32 start_block;
__le32 nlink;
__le16 file_size;
@@ -335,7 +386,7 @@ struct squashfs_ldir_inode {
__le16 uid;
__le16 guid;
__le32 mtime;
- __le32 inode_number;
+ __le32 inode_number;
__le32 nlink;
__le32 file_size;
__le32 start_block;
@@ -349,12 +400,14 @@ struct squashfs_ldir_inode {
union squashfs_inode {
struct squashfs_base_inode base;
struct squashfs_dev_inode dev;
+ struct squashfs_ldev_inode ldev;
struct squashfs_symlink_inode symlink;
struct squashfs_reg_inode reg;
struct squashfs_lreg_inode lreg;
struct squashfs_dir_inode dir;
struct squashfs_ldir_inode ldir;
struct squashfs_ipc_inode ipc;
+ struct squashfs_lipc_inode lipc;
};
struct squashfs_dir_entry {
@@ -377,4 +430,27 @@ struct squashfs_fragment_entry {
unsigned int unused;
};
+struct squashfs_xattr_entry {
+ __le16 type;
+ __le16 size;
+ char data[0];
+};
+
+struct squashfs_xattr_val {
+ __le32 vsize;
+ char value[0];
+};
+
+struct squashfs_xattr_id {
+ __le64 xattr;
+ __le32 count;
+ __le32 size;
+};
+
+struct squashfs_xattr_id_table {
+ __le64 xattr_table_start;
+ __le32 xattr_ids;
+ __le32 unused;
+};
+
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-10 06:59:08 +0000