tests/lib/libc/termios/t_tcsetpgrp.c

   1 /*      $NetBSD: t_tcsetpgrp.c,v 1.3 2012/03/18 07:14:08 jruoho Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jukka Ruohonen.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 #include <sys/cdefs.h>
  32 __RCSID("$NetBSD: t_tcsetpgrp.c,v 1.3 2012/03/18 07:14:08 jruoho Exp $");
  33
  34 #include <sys/wait.h>
  35
  36 #include <atf-c.h>
  37 #include <errno.h>
  38 #include <stdlib.h>
  39 #include <unistd.h>
  40
  41 ATF_TC(tcsetpgrp_err);
  42 ATF_TC_HEAD(tcsetpgrp_err, tc)
  43 {
  44         atf_tc_set_md_var(tc, "descr", "Test errors from tcsetpgrp(3)"
  45             " (PR lib/41673)");
  46 }
  47
  48 ATF_TC_BODY(tcsetpgrp_err, tc)
  49 {
  50         int rv, sta;
  51         pid_t pid;
  52
  53         if (isatty(STDIN_FILENO) == 0)
  54                 return;
  55
  56         pid = fork();
  57         ATF_REQUIRE(pid >= 0);
  58
  59         if (pid == 0) {
  60
  61                 /*
  62                  * The child process ID doesn't match any active
  63                  * process group ID, so the following call should
  64                  * fail with EPERM (and not EINVAL).
  65                  */
  66                 errno = 0;
  67                 rv = tcsetpgrp(STDIN_FILENO, getpid());
  68
  69                 if (rv == 0 || errno != EPERM)
  70                         _exit(EXIT_FAILURE);
  71
  72                 _exit(EXIT_SUCCESS);
  73         }
  74
  75         (void)wait(&sta);
  76
  77         if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
  78                 atf_tc_fail("wrong errno");
  79 }
  80
  81 ATF_TP_ADD_TCS(tp)
  82 {
  83
  84         ATF_TP_ADD_TC(tp, tcsetpgrp_err);
  85
  86         return atf_no_error();
  87 }