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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/xfs/xfs_mac.h
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Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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+/*
+ * 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__ */