usr/src/head/priv_utils.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * This is a private header file.  The interfaces in this header are
  27  * subject to change or removal without notice.
  28  * The Sun classification is "Project Private".
  29  */
  30
  31 #ifndef _PRIV_UTILS_H
  32 #define _PRIV_UTILS_H
  33
  34 #pragma ident   "%Z%%M% %I%     %E% SMI"
  35
  36 #include <priv.h>
  37
  38
  39 #ifdef  __cplusplus
  40 extern "C" {
  41 #endif
  42
  43 #define PU_RESETGROUPS          0x0001  /* Remove supplemental groups */
  44 #define PU_LIMITPRIVS           0x0002  /* L=P */
  45 #define PU_INHERITPRIVS         0x0004  /* I=P */
  46 #define PU_CLEARLIMITSET        0x0008  /* L=0 */
  47
  48 /*
  49  * Should be run at the start of a set-uid root program;
  50  * if the effective uid == 0 and the real uid != 0,
  51  * the specified privileges X are assigned as follows:
  52  *
  53  * P = I + X + B (B added insofar allowable from L)
  54  * E = I
  55  * (i.e., the requested privileges are dormant, not active)
  56  * Then resets all uids to the invoking uid; no-op if euid == uid == 0.
  57  *
  58  * flags: PU_LIMITPRIVS, PU_CLEARLIMITSET, PU_CLEARINHERITABLE
  59  *
  60  * Caches the required privileges for use by __priv_bracket().
  61  *
  62  */
  63 extern int __init_suid_priv(int, ...);
  64
  65 /*
  66  * After calling __init_suid_priv we can __priv_bracket(PRIV_ON) and
  67  * __priv_bracket(PRIV_OFF) and __priv_relinquish to get rid of the
  68  * privileges forever.
  69  */
  70 extern int __priv_bracket(priv_op_t);
  71 extern void __priv_relinquish(void);
  72
  73 /*
  74  * Runs at the start of a daemon, assuming euid=uid=0.
  75  *
  76  * P = E = B + X
  77  *
  78  * Then resets uids.
  79  *
  80  * Flags: all
  81  *
  82  */
  83 extern int __init_daemon_priv(int, uid_t, gid_t, ...);
  84
  85 /*
  86  * Runs after the daemon is initialized, and gives up the privileges
  87  * passed in as argument because they are no longer needed.
  88  * Reenables core dumps.
  89  */
  90 extern void __fini_daemon_priv(const char *, ...);
  91
  92 #ifdef  __cplusplus
  93 }
  94 #endif
  95
  96 #endif  /* _PRIV_UTILS_H */