usr/src/lib/libfakekernel/common/ksid.c

   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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2012, 2015 by Delphix. All rights reserved.
  24  * Copyright (c) 2013, Joyent, Inc.  All rights reserved.
  25  * Copyright 2017 RackTop Systems.
  26  */
  27
  28 #include <sys/sid.h>
  29
  30 #include <umem.h>
  31 #include <strings.h>
  32
  33 static char *
  34 ksid_strdup(const char *s)
  35 {
  36         size_t len;
  37         char *new;
  38
  39         len = strlen(s);
  40         new = umem_alloc(len + 1, KM_SLEEP);
  41         bcopy(s, new, len);
  42         new[len] = '\0';
  43
  44         return (new);
  45 }
  46
  47 static void
  48 ksid_strfree(char *s)
  49 {
  50         umem_free(s, strlen(s) + 1);
  51 }
  52
  53 ksiddomain_t *
  54 ksid_lookupdomain(const char *dom)
  55 {
  56         ksiddomain_t *kd;
  57
  58         kd = umem_zalloc(sizeof (ksiddomain_t), UMEM_NOFAIL);
  59         kd->kd_name = ksid_strdup(dom);
  60         return (kd);
  61 }
  62
  63 void
  64 ksiddomain_rele(ksiddomain_t *ksid)
  65 {
  66         ksid_strfree(ksid->kd_name);
  67         umem_free(ksid, sizeof (ksiddomain_t));
  68 }