tests/lib/libc/ttyio/t_ptm.c

   1 /* $NetBSD: t_ptm.c,v 1.1 2011/01/13 03:19:57 pgoyette Exp $ */
   2
   3 /*
   4  * Copyright (c) 2004, 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   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
  32 #include <sys/cdefs.h>
  33 __COPYRIGHT("@(#) Copyright (c) 2008\
  34  The NetBSD Foundation, inc. All rights reserved.");
  35 __RCSID("$NetBSD: t_ptm.c,v 1.1 2011/01/13 03:19:57 pgoyette Exp $");
  36
  37 #include <sys/ioctl.h>
  38 #include <sys/stat.h>
  39
  40 #include <errno.h>
  41 #include <fcntl.h>
  42 #include <grp.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <unistd.h>
  46
  47 #include <atf-c.h>
  48
  49 #define REQUIRE_ERRNO(x, v) \
  50                 ATF_REQUIRE_MSG(x != v, "%s: %s", #x, strerror(errno))
  51
  52 ATF_TC(ptm);
  53
  54 ATF_TC_HEAD(ptm, tc)
  55 {
  56
  57         atf_tc_set_md_var(tc, "descr", "Checks /dev/ptm device");
  58 }
  59
  60 ATF_TC_BODY(ptm, tc)
  61 {
  62         struct stat stm, sts;
  63         struct ptmget ptm;
  64         int fdm;
  65         struct group *gp;
  66
  67         if ((fdm = open("/dev/ptm", O_RDWR)) == -1) {
  68                 if (errno == ENOENT || errno == ENODEV)
  69                         atf_tc_skip("/dev/ptm: %s", strerror(errno));
  70                 atf_tc_fail("/dev/ptm: %s", strerror(errno));
  71         }
  72
  73         REQUIRE_ERRNO(fstat(fdm, &stm), -1);
  74         ATF_REQUIRE_EQ(major(stm.st_rdev), 165);
  75         REQUIRE_ERRNO(ioctl(fdm, TIOCPTMGET, &ptm), -1);
  76
  77         ATF_REQUIRE_MSG(strncmp(ptm.cn, "/dev/pty", 8) == 0
  78                 || strncmp(ptm.cn, "/dev/null", 9) == 0,
  79                 "bad master name: %s", ptm.cn);
  80
  81         ATF_REQUIRE_MSG(strncmp(ptm.sn, "/dev/tty", 8) == 0
  82                 || strncmp(ptm.sn, "/dev/pts/", 9) == 0,
  83                 "bad slave name: %s", ptm.sn);
  84
  85         if (strncmp(ptm.cn, "/dev/null", 9) != 0) {
  86                 REQUIRE_ERRNO(fstat(ptm.cfd, &stm), -1);
  87                 REQUIRE_ERRNO(stat(ptm.cn, &sts), -1);
  88                 ATF_REQUIRE_EQ(stm.st_rdev, sts.st_rdev);
  89         }
  90
  91         REQUIRE_ERRNO(fstat(ptm.sfd, &stm), -1);
  92         REQUIRE_ERRNO(stat(ptm.sn, &sts), -1);
  93         ATF_REQUIRE_EQ(stm.st_rdev, sts.st_rdev);
  94
  95         ATF_REQUIRE_EQ_MSG(sts.st_uid, getuid(), "bad slave uid");
  96
  97         ATF_REQUIRE_MSG((gp = getgrnam("tty")) != NULL,
  98             "cannot find `tty' group");
  99         ATF_REQUIRE_EQ_MSG(sts.st_gid, gp->gr_gid, "bad slave grid");
 100
 101         (void)close(ptm.sfd);
 102         (void)close(ptm.cfd);
 103         (void)close(fdm);
 104 }
 105
 106 /*
 107  * On NetBSD /dev/ptyp0 == /dev/pts/0 so we can check for major
 108  * and minor device numbers. This check is non-portable. This
 109  * check is now disabled because we might not have /dev/ptyp0
 110  * at all.
 111  */
 112
 113 /*
 114  * #define PTY_DEVNO_CHECK
 115  */
 116
 117 ATF_TC(ptmx);
 118
 119 ATF_TC_HEAD(ptmx, tc)
 120 {
 121
 122         atf_tc_set_md_var(tc, "descr", "Checks /dev/ptmx device");
 123 }
 124
 125 ATF_TC_BODY(ptmx, tc)
 126 {
 127         struct stat stm, sts;
 128         char *pty;
 129         int fdm, fds;
 130         struct group *gp;
 131
 132         if ((fdm = posix_openpt(O_RDWR|O_NOCTTY)) == -1) {
 133                 if (errno == ENOENT || errno == ENODEV)
 134                         atf_tc_skip("/dev/ptmx: %s", strerror(errno));
 135
 136                 atf_tc_fail("/dev/ptmx: %s", strerror(errno));
 137         }
 138
 139         REQUIRE_ERRNO(fstat(fdm, &stm), -1);
 140
 141 #ifdef PTY_DEVNO_CHECK
 142         REQUIRE_ERRNO(stat("/dev/ptyp0", &sts), -1);
 143
 144         ATF_REQUIRE_EQ_MSG(major(stm.st_rdev), major(sts.st_rdev),
 145                 "bad master major number");
 146 #endif
 147
 148         REQUIRE_ERRNO(grantpt(fdm), -1);
 149         REQUIRE_ERRNO(unlockpt(fdm), -1);
 150         REQUIRE_ERRNO((pty = ptsname(fdm)), NULL);
 151
 152         REQUIRE_ERRNO((fds = open(pty, O_RDWR|O_NOCTTY)), -1);
 153         REQUIRE_ERRNO(fstat(fds, &sts), -1);
 154
 155 #ifdef PTY_DEVNO_CHECK
 156         ATF_REQUIRE_EQ_MSG(minor(stm.st_rdev), minor(sts.st_rdev),
 157                 "bad slave minor number");
 158 #endif
 159
 160         ATF_REQUIRE_EQ_MSG(sts.st_uid, getuid(), "bad slave uid");
 161         ATF_REQUIRE_MSG((gp = getgrnam("tty")) != NULL,
 162             "cannot find `tty' group");
 163
 164         ATF_REQUIRE_EQ_MSG(sts.st_gid, gp->gr_gid, "bad slave gid");
 165 }
 166
 167 ATF_TP_ADD_TCS(tp)
 168 {
 169
 170         ATF_TP_ADD_TC(tp, ptm);
 171         ATF_TP_ADD_TC(tp, ptmx);
 172
 173         return atf_no_error();
 174 }