external/bsd/bind/dist/unit/atf-src/atf-c/detail/user.c

   1 /*      $NetBSD: user.c,v 1.3 2014/12/10 04:38:03 christos Exp $        */
   2
   3 /*
   4  * Automated Testing Framework (atf)
   5  *
   6  * Copyright (c) 2007 The NetBSD Foundation, Inc.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
  19  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  20  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  21  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22  * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
  23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  25  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  27  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  28  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  29  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/param.h>
  33 #include <sys/types.h>
  34 #include <limits.h>
  35 #include <unistd.h>
  36
  37 #include "sanity.h"
  38 #include "user.h"
  39
  40 /* ---------------------------------------------------------------------
  41  * Free functions.
  42  * --------------------------------------------------------------------- */
  43
  44 uid_t
  45 atf_user_euid(void)
  46 {
  47     return geteuid();
  48 }
  49
  50 bool
  51 atf_user_is_member_of_group(gid_t gid)
  52 {
  53     static gid_t groups[NGROUPS_MAX];
  54     static int ngroups = -1;
  55     bool found;
  56     int i;
  57
  58     if (ngroups == -1) {
  59         ngroups = getgroups(NGROUPS_MAX, groups);
  60         INV(ngroups >= 0);
  61     }
  62
  63     found = false;
  64     for (i = 0; !found && i < ngroups; i++)
  65         if (groups[i] == gid)
  66             found = true;
  67     return found;
  68 }
  69
  70 bool
  71 atf_user_is_root(void)
  72 {
  73     return geteuid() == 0;
  74 }
  75
  76 bool
  77 atf_user_is_unprivileged(void)
  78 {
  79     return geteuid() != 0;
  80 }