1 /* $NetBSD: t_mknodat.c,v 1.3 2013/03/17 04:46:06 jmmv Exp $ */ 2 3 /*- 4 * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Emmanuel Dreyfus. 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_mknodat.c,v 1.3 2013/03/17 04:46:06 jmmv Exp $"); 33 34 #include <atf-c.h> 35 #include <errno.h> 36 #include <fcntl.h> 37 #include <limits.h> 38 #include <paths.h> 39 #include <stdio.h> 40 #include <string.h> 41 #include <unistd.h> 42 #include <sys/param.h> 43 #include <sys/stat.h> 44 45 #define DIR "dir" 46 #define FILE "dir/openat" 47 #define BASEFILE "openat" 48 #define FILEERR "dir/openaterr" 49 50 static dev_t get_devnull(void); 51 52 static dev_t 53 get_devnull(void) 54 { 55 struct stat st; 56 57 if (stat(_PATH_DEVNULL, &st) != 0) 58 return NODEV; 59 60 return st.st_rdev; 61 } 62 63 64 ATF_TC(mknodat_fd); 65 ATF_TC_HEAD(mknodat_fd, tc) 66 { 67 atf_tc_set_md_var(tc, "descr", "See that mknodat works with fd"); 68 atf_tc_set_md_var(tc, "require.user", "root"); 69 } 70 ATF_TC_BODY(mknodat_fd, tc) 71 { 72 int dfd; 73 int fd; 74 dev_t dev; 75 mode_t mode = S_IFCHR|0600; 76 77 ATF_REQUIRE((dev = get_devnull()) != NODEV); 78 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 79 ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1); 80 ATF_REQUIRE((fd = mknodat(dfd, BASEFILE, mode, dev)) != -1); 81 ATF_REQUIRE(close(fd) == 0); 82 ATF_REQUIRE(access(FILE, F_OK) == 0); 83 } 84 85 ATF_TC(mknodat_fdcwd); 86 ATF_TC_HEAD(mknodat_fdcwd, tc) 87 { 88 atf_tc_set_md_var(tc, "descr", 89 "See that mknodat works with fd as AT_FDCWD"); 90 atf_tc_set_md_var(tc, "require.user", "root"); 91 } 92 ATF_TC_BODY(mknodat_fdcwd, tc) 93 { 94 int fd; 95 dev_t dev; 96 mode_t mode = S_IFCHR|0600; 97 98 ATF_REQUIRE((dev = get_devnull()) != NODEV); 99 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 100 ATF_REQUIRE((fd = mknodat(AT_FDCWD, FILE, mode, dev)) != -1); 101 ATF_REQUIRE(close(fd) == 0); 102 ATF_REQUIRE(access(FILE, F_OK) == 0); 103 } 104 105 ATF_TC(mknodat_fdcwderr); 106 ATF_TC_HEAD(mknodat_fdcwderr, tc) 107 { 108 atf_tc_set_md_var(tc, "descr", 109 "See that mknodat fails with fd as AT_FDCWD and bad path"); 110 atf_tc_set_md_var(tc, "require.user", "root"); 111 } 112 ATF_TC_BODY(mknodat_fdcwderr, tc) 113 { 114 int fd; 115 dev_t dev; 116 mode_t mode = S_IFCHR|0600; 117 118 ATF_REQUIRE((dev = get_devnull()) != NODEV); 119 ATF_REQUIRE((fd = mknodat(AT_FDCWD, FILEERR, mode, dev)) == -1); 120 } 121 122 ATF_TC(mknodat_fderr); 123 ATF_TC_HEAD(mknodat_fderr, tc) 124 { 125 atf_tc_set_md_var(tc, "descr", "See that mknodat fails with fd as -1"); 126 atf_tc_set_md_var(tc, "require.user", "root"); 127 } 128 ATF_TC_BODY(mknodat_fderr, tc) 129 { 130 int fd; 131 dev_t dev; 132 mode_t mode = S_IFCHR|0600; 133 134 ATF_REQUIRE((dev = get_devnull()) != NODEV); 135 ATF_REQUIRE(mkdir(DIR, 0755) == 0); 136 ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1); 137 ATF_REQUIRE(close(fd) == 0); 138 ATF_REQUIRE((fd = mknodat(-1, FILE, mode, dev)) == -1); 139 } 140 141 ATF_TP_ADD_TCS(tp) 142 { 143 144 ATF_TP_ADD_TC(tp, mknodat_fd); 145 ATF_TP_ADD_TC(tp, mknodat_fdcwd); 146 ATF_TP_ADD_TC(tp, mknodat_fdcwderr); 147 ATF_TP_ADD_TC(tp, mknodat_fderr); 148 149 return atf_no_error(); 150 } 151