1 files changed, 139 insertions, 0 deletions

diff --git a/include/linux/reiserfs_xattr.h b/include/linux/reiserfs_xattr.h
new file mode 100644
index 000000000000..1eaa48eca811
--- /dev/null
+++ b/include/linux/reiserfs_xattr.h
@@ -0,0 +1,139 @@
+/*
+  File: linux/reiserfs_xattr.h
+*/
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/xattr.h>
+
+/* Magic value in header */
+#define REISERFS_XATTR_MAGIC 0x52465841 /* "RFXA" */
+
+struct reiserfs_xattr_header {
+    __u32 h_magic;              /* magic number for identification */
+    __u32 h_hash;               /* hash of the value */
+};
+
+#ifdef __KERNEL__
+
+struct reiserfs_xattr_handler {
+        char *prefix;
+        int (*init)(void);
+        void (*exit)(void);
+        int (*get)(struct inode *inode, const char *name, void *buffer,
+                   size_t size);
+        int (*set)(struct inode *inode, const char *name, const void *buffer,
+                   size_t size, int flags);
+        int (*del)(struct inode *inode, const char *name);
+        int (*list)(struct inode *inode, const char *name, int namelen, char *out);
+        struct list_head handlers;
+};
+
+
+#ifdef CONFIG_REISERFS_FS_XATTR
+#define is_reiserfs_priv_object(inode) IS_PRIVATE(inode)
+#define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir)
+ssize_t reiserfs_getxattr (struct dentry *dentry, const char *name,
+                           void *buffer, size_t size);
+int reiserfs_setxattr (struct dentry *dentry, const char *name,
+                       const void *value, size_t size, int flags);
+ssize_t reiserfs_listxattr (struct dentry *dentry, char *buffer, size_t size);
+int reiserfs_removexattr (struct dentry *dentry, const char *name);
+int reiserfs_delete_xattrs (struct inode *inode);
+int reiserfs_chown_xattrs (struct inode *inode, struct iattr *attrs);
+int reiserfs_xattr_init (struct super_block *sb, int mount_flags);
+int reiserfs_permission (struct inode *inode, int mask, struct nameidata *nd);
+int reiserfs_permission_locked (struct inode *inode, int mask, struct nameidata *nd);
+
+int reiserfs_xattr_del (struct inode *, const char *);
+int reiserfs_xattr_get (const struct inode *, const char *, void *, size_t);
+int reiserfs_xattr_set (struct inode *, const char *, const void *,
+                               size_t, int);
+
+extern struct reiserfs_xattr_handler user_handler;
+extern struct reiserfs_xattr_handler trusted_handler;
+#ifdef CONFIG_REISERFS_FS_SECURITY
+extern struct reiserfs_xattr_handler security_handler;
+#endif
+
+int reiserfs_xattr_register_handlers (void) __init;
+void reiserfs_xattr_unregister_handlers (void);
+
+static inline void
+reiserfs_write_lock_xattrs(struct super_block *sb)
+{
+    down_write (&REISERFS_XATTR_DIR_SEM(sb));
+}
+static inline void
+reiserfs_write_unlock_xattrs(struct super_block *sb)
+{
+    up_write (&REISERFS_XATTR_DIR_SEM(sb));
+}
+static inline void
+reiserfs_read_lock_xattrs(struct super_block *sb)
+{
+    down_read (&REISERFS_XATTR_DIR_SEM(sb));
+}
+
+static inline void
+reiserfs_read_unlock_xattrs(struct super_block *sb)
+{
+    up_read (&REISERFS_XATTR_DIR_SEM(sb));
+}
+
+static inline void
+reiserfs_write_lock_xattr_i(struct inode *inode)
+{
+    down_write (&REISERFS_I(inode)->xattr_sem);
+}
+static inline void
+reiserfs_write_unlock_xattr_i(struct inode *inode)
+{
+    up_write (&REISERFS_I(inode)->xattr_sem);
+}
+static inline void
+reiserfs_read_lock_xattr_i(struct inode *inode)
+{
+    down_read (&REISERFS_I(inode)->xattr_sem);
+}
+
+static inline void
+reiserfs_read_unlock_xattr_i(struct inode *inode)
+{
+    up_read (&REISERFS_I(inode)->xattr_sem);
+}
+
+static inline void
+reiserfs_mark_inode_private(struct inode *inode)
+{
+    inode->i_flags |= S_PRIVATE;
+}
+
+#else
+
+#define is_reiserfs_priv_object(inode) 0
+#define reiserfs_mark_inode_private(inode)
+#define reiserfs_getxattr NULL
+#define reiserfs_setxattr NULL
+#define reiserfs_listxattr NULL
+#define reiserfs_removexattr NULL
+#define reiserfs_write_lock_xattrs(sb)
+#define reiserfs_write_unlock_xattrs(sb)
+#define reiserfs_read_lock_xattrs(sb)
+#define reiserfs_read_unlock_xattrs(sb)
+
+#define reiserfs_permission NULL
+
+#define reiserfs_xattr_register_handlers() 0
+#define reiserfs_xattr_unregister_handlers()
+
+static inline int reiserfs_delete_xattrs (struct inode *inode) { return 0; };
+static inline int reiserfs_chown_xattrs (struct inode *inode, struct iattr *attrs) { return 0; };
+static inline int reiserfs_xattr_init (struct super_block *sb, int mount_flags)
+{
+    sb->s_flags = (sb->s_flags & ~MS_POSIXACL); /* to be sure */
+    return 0;
+};
+#endif
+
+#endif  /* __KERNEL__ */