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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/fs/jffs2/xattr.h
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/fs/jffs2/xattr.h')
-rw-r--r--kernel/fs/jffs2/xattr.h133
1 files changed, 133 insertions, 0 deletions
diff --git a/kernel/fs/jffs2/xattr.h b/kernel/fs/jffs2/xattr.h
new file mode 100644
index 000000000..467ff376e
--- /dev/null
+++ b/kernel/fs/jffs2/xattr.h
@@ -0,0 +1,133 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright © 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 */
+#define JFFS2_XFLAGS_DEAD (0x40) /* This datum is already dead */
+#define JFFS2_XFLAGS_INVALID (0x80) /* This datum contains crc error */
+
+struct jffs2_xattr_datum
+{
+ void *always_null;
+ struct jffs2_raw_node_ref *node;
+ uint8_t class;
+ uint8_t flags;
+ uint16_t xprefix; /* see JFFS2_XATTR_PREFIX_* */
+
+ struct list_head xindex; /* chained from c->xattrindex[n] */
+ atomic_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;
+ struct jffs2_raw_node_ref *node;
+ uint8_t class;
+ uint8_t flags; /* Currently unused */
+ u16 unused;
+
+ uint32_t xseqno;
+ 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 */
+};
+
+#define XREF_DELETE_MARKER (0x00000001)
+static inline int is_xattr_ref_dead(struct jffs2_xattr_ref *ref)
+{
+ return ((ref->xseqno & XREF_DELETE_MARKER) != 0);
+}
+
+#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_do_crccheck_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic);
+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,
+ struct jffs2_raw_node_ref *raw);
+extern int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref,
+ struct jffs2_raw_node_ref *raw);
+extern int jffs2_verify_xattr(struct jffs2_sb_info *c);
+extern void jffs2_release_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd);
+extern void jffs2_release_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref);
+
+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 const struct xattr_handler *jffs2_xattr_handlers[];
+extern const struct xattr_handler jffs2_user_xattr_handler;
+extern const 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_do_crccheck_inode(c, ic)
+#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,
+ const struct qstr *qstr);
+extern const struct xattr_handler jffs2_security_xattr_handler;
+#else
+#define jffs2_init_security(inode,dir,qstr) (0)
+#endif /* CONFIG_JFFS2_FS_SECURITY */
+
+#endif /* _JFFS2_FS_XATTR_H_ */