1 files changed, 75 insertions, 1 deletions

diff --git a/fs/squashfs/squashfs_fs.h b/fs/squashfs/squashfs_fs.h
index 79024245ea00..8eabb808b78d 100644
--- a/fs/squashfs/squashfs_fs.h
+++ b/fs/squashfs/squashfs_fs.h
@@ -46,6 +46,7 @@
 #define SQUASHFS_NAME_LEN               256
 
 #define SQUASHFS_INVALID_FRAG           (0xffffffffU)
+#define SQUASHFS_INVALID_XATTR          (0xffffffffU)
 #define SQUASHFS_INVALID_BLK            (-1LL)
 
 /* Filesystem flags */
@@ -96,6 +97,13 @@
 #define SQUASHFS_LFIFO_TYPE             13
 #define SQUASHFS_LSOCKET_TYPE           14
 
+/* 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)
@@ -174,6 +182,24 @@
 
 #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))
+
+#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_XATTR_BLOCKS(A)        ((SQUASHFS_XATTR_BYTES(A) + \
+                                        SQUASHFS_METADATA_SIZE - 1) / \
+                                        SQUASHFS_METADATA_SIZE)
+
+#define SQUASHFS_XATTR_BLOCK_BYTES(A)   (SQUASHFS_XATTR_BLOCKS(A) *\
+                                        sizeof(u64))
+#define SQUASHFS_XATTR_BLK(A)           ((unsigned int) ((A) >> 16))
+
+#define SQUASHFS_XATTR_OFFSET(A)        ((unsigned int) ((A) & 0xffff))
 
 /* cached data constants for filesystem */
 #define SQUASHFS_CACHED_BLKS            8
@@ -228,7 +254,7 @@ 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;
@@ -261,6 +287,17 @@ struct squashfs_ipc_inode {
         __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;
@@ -272,6 +309,18 @@ struct squashfs_dev_inode {
         __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;
@@ -349,12 +398,14 @@ 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 +428,27 @@ 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