patch-2.4.20 linux-2.4.20/fs/jfs/jfs_xattr.h

• Lines: 63
• Date: Thu Nov 28 15:53:15 2002
• Orig file: linux-2.4.19/fs/jfs/jfs_xattr.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/fs/jfs/jfs_xattr.h linux-2.4.20/fs/jfs/jfs_xattr.h
@@ -0,0 +1,62 @@
+/*
+ *   Copyright (c) International Business Machines Corp., 2000-2002
+ *
+ *   This program is free software;  you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+ *   the GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program;  if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef H_JFS_XATTR
+#define H_JFS_XATTR
+
+/*
+ * jfs_ea_list describe the on-disk format of the extended attributes.
+ * I know the null-terminator is redundant since namelen is stored, but
+ * I am maintaining compatibility with OS/2 where possible.
+ */
+struct jfs_ea {
+	u8 flag;	/* Unused? */
+	u8 namelen;	/* Length of name */
+	u16 valuelen;	/* Length of value */
+	char name[0];	/* Attribute name (includes null-terminator) */
+};			/* Value immediately follows name */
+
+struct jfs_ea_list {
+	u32 size;		/* overall size */
+	struct jfs_ea ea[0];	/* Variable length list */
+};
+
+/* Macros for defining maxiumum number of bytes supported for EAs */
+#define MAXEASIZE	65535
+#define MAXEALISTSIZE	MAXEASIZE
+
+/*
+ * some macros for dealing with variable length EA lists.
+ */
+#define EA_SIZE(ea) \
+	(sizeof (struct jfs_ea) + (ea)->namelen + 1 + \
+	 le16_to_cpu((ea)->valuelen))
+#define	NEXT_EA(ea) ((struct jfs_ea *) (((char *) (ea)) + (EA_SIZE (ea))))
+#define	FIRST_EA(ealist) ((ealist)->ea)
+#define	EALIST_SIZE(ealist) le32_to_cpu((ealist)->size)
+#define	END_EALIST(ealist) \
+	((struct jfs_ea *) (((char *) (ealist)) + EALIST_SIZE(ealist)))
+
+extern int __jfs_setxattr(struct inode *, const char *, void *, size_t, int);
+extern int jfs_setxattr(struct dentry *, const char *, void *, size_t, int);
+extern ssize_t __jfs_getxattr(struct inode *, const char *, void *, size_t);
+extern ssize_t jfs_getxattr(struct dentry *, const char *, void *, size_t);
+extern ssize_t jfs_listxattr(struct dentry *, char *, size_t);
+extern int jfs_removexattr(struct dentry *, const char *);
+
+#endif	/* H_JFS_XATTR */