1 /*- 2 * Copyright (c) 2006 nCircle Network Security, Inc. 3 * Copyright (c) 2007 Robert N. M. Watson 4 * All rights reserved. 5 * 6 * This software was developed by Robert N. M. Watson for the TrustedBSD 7 * Project under contract to nCircle Network Security, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR, NCIRCLE NETWORK SECURITY, 22 * INC., OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 24 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 25 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 26 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 27 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * Test that privilege is required to set the sgid bit on a file with a group 33 * that isn't in the process credential. The file uid owner is set to the 34 * uid being tested with, as we are not interested in testing privileges 35 * associated with file ownership. 36 */ 37 38 #include <sys/stat.h> 39 40 #include <err.h> 41 #include <errno.h> 42 #include <fcntl.h> 43 #include <unistd.h> 44 45 #include "main.h" 46 47 static char fpath[1024]; 48 static int fpath_initialized; 49 50 int 51 priv_vfs_setgid_fowner_setup(int asroot, int injail, struct test *test) 52 { 53 54 setup_file("priv_vfs_setgid_fowner: fpath", fpath, UID_OWNER, 55 GID_OWNER, 0600); 56 fpath_initialized = 1; 57 return (0); 58 } 59 60 int 61 priv_vfs_setgid_fother_setup(int asroot, int injail, struct test *test) 62 { 63 64 /* NOTE: owner uid, *other* gid. */ 65 setup_file("priv_vfs_setgid_forther: fpath", fpath, UID_OWNER, 66 GID_OTHER, 0600); 67 fpath_initialized = 1; 68 return (0); 69 } 70 71 void 72 priv_vfs_setgid_fowner(int asroot, int injail, struct test *test) 73 { 74 int error; 75 76 error = chmod(fpath, 0600 | S_ISGID); 77 if (asroot && injail) 78 expect("priv_vfs_setgid_fowner(asroot, injail)", error, 0, 79 0); 80 if (asroot && !injail) 81 expect("priv_vfs_setgid_fowner(asroot, !injail)", error, 0, 82 0); 83 if (!asroot && injail) 84 expect("priv_vfs_setgid_fowner(!asroot, injail)", error, 0, 85 0); 86 if (!asroot && !injail) 87 expect("priv_vfs_setgid_fowner(!asroot, !injail)", error, 0, 88 0); 89 } 90 91 void 92 priv_vfs_setgid_fother(int asroot, int injail, struct test *test) 93 { 94 int error; 95 96 error = chmod(fpath, 0600 | S_ISGID); 97 if (asroot && injail) 98 expect("priv_vfs_setgid_fother(asroot, injail)", error, 0, 99 0); 100 if (asroot && !injail) 101 expect("priv_vfs_setgid_fother(asroot, !injail)", error, 0, 102 0); 103 if (!asroot && injail) 104 expect("priv_vfs_setgid_fother(!asroot, injail)", error, -1, 105 EPERM); 106 if (!asroot && !injail) 107 expect("priv_vfs_setgid_fother(!asroot, !injail)", error, -1, 108 EPERM); 109 } 110 111 void 112 priv_vfs_setgid_cleanup(int asroot, int injail, struct test *test) 113 { 114 115 if (fpath_initialized) { 116 (void)unlink(fpath); 117 fpath_initialized = 0; 118 } 119 } 120