1 /* $NetBSD: t_ptm.c,v 1.3 2025/08/05 23:59:42 gutteridge 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 1.3 2025/08/05 23:59:42 gutteridge 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_TC(ptmx_extra); 168 169 ATF_TC_HEAD(ptmx_extra, tc) 170 { 171 172 atf_tc_set_md_var(tc, "descr", "Checks /dev/ptmx device " 173 "applies O_NONBLOCK, O_CLOEXEC, and O_CLOFORK"); 174 } 175 176 ATF_TC_BODY(ptmx_extra, tc) 177 { 178 int fdm; 179 180 if ((fdm = posix_openpt(O_RDWR|O_NONBLOCK|O_CLOEXEC|O_CLOFORK)) == -1) { 181 if (errno == ENOENT || errno == ENODEV) 182 atf_tc_skip("/dev/ptmx: %s", strerror(errno)); 183 184 atf_tc_fail("/dev/ptmx: %s", strerror(errno)); 185 } 186 187 ATF_CHECK_EQ(O_RDWR|O_NONBLOCK, fcntl(fdm, F_GETFL)); 188 ATF_CHECK_EQ(FD_CLOEXEC|FD_CLOFORK, fcntl(fdm, F_GETFD)); 189 } 190 191 ATF_TP_ADD_TCS(tp) 192 { 193 194 ATF_TP_ADD_TC(tp, ptm); 195 ATF_TP_ADD_TC(tp, ptmx); 196 ATF_TP_ADD_TC(tp, ptmx_extra); 197 198 return atf_no_error(); 199 } 200
Indexes created Thu Oct 02 01:09:59 GMT 2025