external/bsd/atf/dist/atf-c/detail/user.c

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