1 files changed, 116 insertions, 0 deletions

diff --git a/fs/jffs2/xattr.h b/fs/jffs2/xattr.h
new file mode 100644
index 000000000000..e2aa2394ab64
--- /dev/null
+++ b/fs/jffs2/xattr.h
@@ -0,0 +1,116 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2006  NEC Corporation
+ *
+ * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ */
+#ifndef _JFFS2_FS_XATTR_H_
+#define _JFFS2_FS_XATTR_H_
+
+#include <linux/xattr.h>
+#include <linux/list.h>
+
+#define JFFS2_XFLAGS_HOT        (0x01)  /* This datum is HOT */
+#define JFFS2_XFLAGS_BIND       (0x02)  /* This datum is not reclaimed */
+
+struct jffs2_xattr_datum
+{
+        void *always_null;
+        u8 class;
+        u8 flags;
+        u16 xprefix;                    /* see JFFS2_XATTR_PREFIX_* */
+
+        struct jffs2_raw_node_ref *node;
+        struct list_head xindex;        /* chained from c->xattrindex[n] */
+        uint32_t refcnt;                /* # of xattr_ref refers this */
+        uint32_t xid;
+        uint32_t version;
+
+        uint32_t data_crc;
+        uint32_t hashkey;
+        char *xname;            /* XATTR name without prefix */
+        uint32_t name_len;      /* length of xname */
+        char *xvalue;           /* XATTR value */
+        uint32_t value_len;     /* length of xvalue */
+};
+
+struct jffs2_inode_cache;
+struct jffs2_xattr_ref
+{
+        void *always_null;
+        u8 class;
+        u8 flags;               /* Currently unused */
+        u16 unused;
+
+        struct jffs2_raw_node_ref *node;
+        union {
+                struct jffs2_inode_cache *ic;   /* reference to jffs2_inode_cache */
+                uint32_t ino;                   /* only used in scanning/building  */
+        };
+        union {
+                struct jffs2_xattr_datum *xd;   /* reference to jffs2_xattr_datum */
+                uint32_t xid;                   /* only used in sccanning/building */
+        };
+        struct jffs2_xattr_ref *next;           /* chained from ic->xref_list */
+};
+
+#ifdef CONFIG_JFFS2_FS_XATTR
+
+extern void jffs2_init_xattr_subsystem(struct jffs2_sb_info *c);
+extern void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c);
+extern void jffs2_clear_xattr_subsystem(struct jffs2_sb_info *c);
+
+extern struct jffs2_xattr_datum *jffs2_setup_xattr_datum(struct jffs2_sb_info *c,
+                                                  uint32_t xid, uint32_t version);
+
+extern void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic);
+extern void jffs2_xattr_free_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic);
+
+extern int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd);
+extern int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref);
+extern int jffs2_verify_xattr(struct jffs2_sb_info *c);
+
+extern int do_jffs2_getxattr(struct inode *inode, int xprefix, const char *xname,
+                             char *buffer, size_t size);
+extern int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname,
+                             const char *buffer, size_t size, int flags);
+
+extern struct xattr_handler *jffs2_xattr_handlers[];
+extern struct xattr_handler jffs2_user_xattr_handler;
+extern struct xattr_handler jffs2_trusted_xattr_handler;
+
+extern ssize_t jffs2_listxattr(struct dentry *, char *, size_t);
+#define jffs2_getxattr          generic_getxattr
+#define jffs2_setxattr          generic_setxattr
+#define jffs2_removexattr       generic_removexattr
+
+#else
+
+#define jffs2_init_xattr_subsystem(c)
+#define jffs2_build_xattr_subsystem(c)
+#define jffs2_clear_xattr_subsystem(c)
+
+#define jffs2_xattr_delete_inode(c, ic)
+#define jffs2_xattr_free_inode(c, ic)
+#define jffs2_verify_xattr(c)                   (1)
+
+#define jffs2_xattr_handlers    NULL
+#define jffs2_listxattr         NULL
+#define jffs2_getxattr          NULL
+#define jffs2_setxattr          NULL
+#define jffs2_removexattr       NULL
+
+#endif /* CONFIG_JFFS2_FS_XATTR */
+
+#ifdef CONFIG_JFFS2_FS_SECURITY
+extern int jffs2_init_security(struct inode *inode, struct inode *dir);
+extern struct xattr_handler jffs2_security_xattr_handler;
+#else
+#define jffs2_init_security(inode,dir)  (0)
+#endif /* CONFIG_JFFS2_FS_SECURITY */
+
+#endif /* _JFFS2_FS_XATTR_H_ */