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) 1994, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2012, 2017 by Delphix. All rights reserved.
  24  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
  25  */
  26 
  27 #include <sys/types.h>
  28 #include <sys/cmn_err.h>
  29 #include <sys/cred.h>
  30 #include <sys/kmem.h>
  31 #include <sys/systm.h>
  32 #include <sys/sysmacros.h>
  33 
  34 volatile int ncsize = 500;      /* dnlc.h */
  35 
  36 static major_t devcnt = 0x280;
  37 static kmutex_t udevlock;
  38 
  39 /* os/subr.c */
  40 major_t
  41 getudev()
  42 {
  43         static major_t next = 0;
  44         major_t ret;
  45 
  46         mutex_enter(&udevlock);
  47         if (next == 0)
  48                 next = devcnt;
  49         if (next <= L_MAXMAJ32 && next >= devcnt)
  50                 ret = next++;
  51         else {
  52                 cmn_err(CE_WARN, "out of major numbers");
  53                 ret = ((major_t)-1);
  54         }
  55         mutex_exit(&udevlock);
  56         return (ret);
  57 }
  58 
  59 /*
  60  * Compress 'long' device number encoding to 32-bit device number
  61  * encoding.  If it won't fit, we return failure, but set the
  62  * device number to 32-bit NODEV for the sake of our callers.
  63  */
  64 int
  65 cmpldev(dev32_t *dst, dev_t dev)
  66 {
  67 #if defined(_LP64)
  68         if (dev == NODEV) {
  69                 *dst = (dev32_t)(-1);
  70         } else {
  71                 major_t major = dev >> L_BITSMINOR;
  72                 minor_t minor = dev & L_MAXMIN;
  73 
  74                 if (major > L_MAXMAJ32 || minor > L_MAXMIN32) {
  75                         *dst = (dev32_t)(-1);
  76                         return (0);
  77                 }
  78 
  79                 *dst = (dev32_t)((major << L_BITSMINOR32) | minor);
  80         }
  81 #else
  82         *dst = (dev32_t)dev;
  83 #endif
  84         return (1);
  85 }
  86 
  87 /* os/cred.c */
  88 int
  89 groupmember(gid_t gid, const cred_t *cr)
  90 {
  91         if (gid == 0 || gid == 1)
  92                 return (1);
  93         return (0);
  94 }
  95 
  96 /* os/sig.c */
  97 
  98 /* ARGSUSED */
  99 void
 100 sigintr(k_sigset_t *smask, int intable)
 101 {
 102 }
 103 
 104 /* ARGSUSED */
 105 void
 106 sigunintr(k_sigset_t *smask)
 107 {
 108 }