patch-2.4.25 linux-2.4.25/fs/xfs/xfs_mac.h

• Lines: 121
• Date: 2004-02-18 05:36:32.000000000 -0800
• Orig file: linux-2.4.24/fs/xfs/xfs_mac.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.24/fs/xfs/xfs_mac.h linux-2.4.25/fs/xfs/xfs_mac.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2001-2002 Silicon Graphics, Inc.  All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like.  Any license provided herein, whether implied or
+ * otherwise, applies only to this software file.  Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA  94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+#ifndef __XFS_MAC_H__
+#define __XFS_MAC_H__
+
+/*
+ * Mandatory Access Control
+ *
+ * Layout of a composite MAC label:
+ * ml_list contains the list of categories (MSEN) followed by the list of
+ * divisions (MINT). This is actually a header for the data structure which
+ * will have an ml_list with more than one element.
+ *
+ *      -------------------------------
+ *      | ml_msen_type | ml_mint_type |
+ *      -------------------------------
+ *      | ml_level     | ml_grade     |
+ *      -------------------------------
+ *      | ml_catcount                 |
+ *      -------------------------------
+ *      | ml_divcount                 |
+ *      -------------------------------
+ *      | category 1                  |
+ *      | . . .                       |
+ *      | category N                  | (where N = ml_catcount)
+ *      -------------------------------
+ *      | division 1                  |
+ *      | . . .                       |
+ *      | division M                  | (where M = ml_divcount)
+ *      -------------------------------
+ */
+#define XFS_MAC_MAX_SETS	250
+typedef struct xfs_mac_label {
+	__uint8_t	ml_msen_type;	/* MSEN label type */
+	__uint8_t	ml_mint_type;	/* MINT label type */
+	__uint8_t	ml_level;	/* Hierarchical level */
+	__uint8_t	ml_grade;	/* Hierarchical grade */
+	__uint16_t	ml_catcount;	/* Category count */
+	__uint16_t	ml_divcount;	/* Division count */
+					/* Category set, then Division set */
+	__uint16_t	ml_list[XFS_MAC_MAX_SETS];
+} xfs_mac_label_t;
+
+/* MSEN label type names. Choose an upper case ASCII character.  */
+#define XFS_MSEN_ADMIN_LABEL	'A'	/* Admin: low<admin != tcsec<high */
+#define XFS_MSEN_EQUAL_LABEL	'E'	/* Wildcard - always equal */
+#define XFS_MSEN_HIGH_LABEL	'H'	/* System High - always dominates */
+#define XFS_MSEN_MLD_HIGH_LABEL	'I'	/* System High, multi-level dir */
+#define XFS_MSEN_LOW_LABEL	'L'	/* System Low - always dominated */
+#define XFS_MSEN_MLD_LABEL	'M'	/* TCSEC label on a multi-level dir */
+#define XFS_MSEN_MLD_LOW_LABEL	'N'	/* System Low, multi-level dir */
+#define XFS_MSEN_TCSEC_LABEL	'T'	/* TCSEC label */
+#define XFS_MSEN_UNKNOWN_LABEL	'U'	/* unknown label */
+
+/* MINT label type names. Choose a lower case ASCII character.  */
+#define XFS_MINT_BIBA_LABEL	'b'	/* Dual of a TCSEC label */
+#define XFS_MINT_EQUAL_LABEL	'e'	/* Wildcard - always equal */
+#define XFS_MINT_HIGH_LABEL	'h'	/* High Grade - always dominates */
+#define XFS_MINT_LOW_LABEL	'l'	/* Low Grade - always dominated */
+
+/* On-disk XFS extended attribute names */
+#define SGI_MAC_FILE	"SGI_MAC_FILE"
+#define SGI_MAC_FILE_SIZE	(sizeof(SGI_MAC_FILE)-1)
+
+
+#ifdef __KERNEL__
+
+#ifdef CONFIG_FS_POSIX_MAC
+
+/* NOT YET IMPLEMENTED */
+
+#define MACEXEC		00100
+#define MACWRITE	00200
+#define MACREAD		00400
+
+struct xfs_inode;
+extern int  xfs_mac_iaccess(struct xfs_inode *, mode_t, cred_t *);
+
+#define _MAC_XFS_IACCESS(i,m,c) (xfs_mac_iaccess(i,m,c))
+#define _MAC_VACCESS(v,c,m)	(xfs_mac_vaccess(v,c,m))
+#define _MAC_EXISTS		xfs_mac_vhaslabel
+
+#else
+#define _MAC_XFS_IACCESS(i,m,c)	(0)
+#define _MAC_VACCESS(v,c,m)	(0)
+#define _MAC_EXISTS		(NULL)
+#endif
+
+#endif	/* __KERNEL__ */
+
+#endif	/* __XFS_MAC_H__ */