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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright 2016 Joyent, Inc.
  24  * Copyright (c) 2016 by Delphix. All rights reserved.
  25  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
  26  */
  27 
  28 #include <sys/types.h>
  29 #include <sys/cred.h>
  30 #include <sys/errno.h>
  31 #include <sys/policy.h>
  32 
  33 /* ARGSUSED */
  34 int
  35 secpolicy_fs_allowed_mount(const char *fsname)
  36 {
  37         return (0);
  38 }
  39 
  40 int
  41 secpolicy_vnode_access2(const cred_t *cr, vnode_t *vp, uid_t owner,
  42     mode_t curmode, mode_t wantmode)
  43 {
  44         mode_t mode;
  45 
  46         mode = ~curmode & wantmode;
  47 
  48         if (mode == 0)
  49                 return (0);
  50         return (EACCES);
  51 }
  52 
  53 int
  54 secpolicy_vnode_owner(const cred_t *cr, uid_t owner)
  55 {
  56         /* cr->cr_uid */
  57         if (owner == crgetruid(cr))
  58                 return (0);
  59 
  60         return (EPERM);
  61 }
  62 
  63 int
  64 secpolicy_vnode_setattr(cred_t *cr, struct vnode *vp, struct vattr *vap,
  65     const struct vattr *ovap, int flags,
  66     int unlocked_access(void *, int, cred_t *),
  67     void *node)
  68 {
  69         int mask = vap->va_mask;
  70 
  71         if (mask & AT_SIZE) {
  72                 if (vp->v_type == VDIR)
  73                         return (EISDIR);
  74         }
  75         if (mask & AT_MODE)
  76                 return (EACCES);
  77         if (mask & (AT_UID|AT_GID))
  78                 return (EACCES);
  79 
  80         return (0);
  81 }
  82 
  83 int
  84 secpolicy_vnode_setdac(const cred_t *cred, uid_t owner)
  85 {
  86         if (owner == crgetuid(cred))
  87                 return (0);
  88 
  89         return (EPERM);
  90 }