Prepare for building filesystems.

1 files changed, 96 insertions, 0 deletions

diff --git a/usr/src/head/priv_utils.h b/usr/src/head/priv_utils.h
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+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This is a private header file.  The interfaces in this header are
+ * subject to change or removal without notice.
+ * The Sun classification is "Project Private".
+ */
+
+#ifndef	_PRIV_UTILS_H
+#define	_PRIV_UTILS_H
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <priv.h>
+
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#define	PU_RESETGROUPS		0x0001	/* Remove supplemental groups */
+#define	PU_LIMITPRIVS		0x0002	/* L=P */
+#define	PU_INHERITPRIVS		0x0004	/* I=P */
+#define	PU_CLEARLIMITSET	0x0008	/* L=0 */
+
+/*
+ * Should be run at the start of a set-uid root program;
+ * if the effective uid == 0 and the real uid != 0,
+ * the specified privileges X are assigned as follows:
+ *
+ * P = I + X + B (B added insofar allowable from L)
+ * E = I
+ * (i.e., the requested privileges are dormant, not active)
+ * Then resets all uids to the invoking uid; no-op if euid == uid == 0.
+ *
+ * flags: PU_LIMITPRIVS, PU_CLEARLIMITSET, PU_CLEARINHERITABLE
+ *
+ * Caches the required privileges for use by __priv_bracket().
+ *
+ */
+extern int __init_suid_priv(int, ...);
+
+/*
+ * After calling __init_suid_priv we can __priv_bracket(PRIV_ON) and
+ * __priv_bracket(PRIV_OFF) and __priv_relinquish to get rid of the
+ * privileges forever.
+ */
+extern int __priv_bracket(priv_op_t);
+extern void __priv_relinquish(void);
+
+/*
+ * Runs at the start of a daemon, assuming euid=uid=0.
+ *
+ * P = E = B + X
+ *
+ * Then resets uids.
+ *
+ * Flags: all
+ *
+ */
+extern int __init_daemon_priv(int, uid_t, gid_t, ...);
+
+/*
+ * Runs after the daemon is initialized, and gives up the privileges
+ * passed in as argument because they are no longer needed.
+ * Reenables core dumps.
+ */
+extern void __fini_daemon_priv(const char *, ...);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _PRIV_UTILS_H */