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 * Confirm that calls to fhopen() require non-jailed priilege. We create a 33 * temporary file and grab the file handle using getfh() before starting. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/mount.h> 38 39 #include <err.h> 40 #include <errno.h> 41 #include <fcntl.h> 42 #include <unistd.h> 43 44 #include "main.h" 45 46 static char fpath[1024]; 47 static int fpath_initialized; 48 static fhandle_t fh; 49 50 int 51 priv_vfs_fhopen_setup(int asroot, int injail, struct test *test) 52 { 53 54 setup_file("private_vfs_fhopen_setup: fpath", fpath, UID_ROOT, 55 GID_WHEEL, 0644); 56 fpath_initialized = 1; 57 if (getfh(fpath, &fh) < 0) { 58 warn("priv_vfs_fhopen_setup: getfh(%s)", fpath); 59 return (-1); 60 } 61 return (0); 62 } 63 64 void 65 priv_vfs_fhopen(int asroot, int injail, struct test *test) 66 { 67 int errno_saved, error, fd; 68 69 fd = fhopen(&fh, O_RDONLY); 70 if (fd >= 0) { 71 error = 0; 72 errno_saved = errno; 73 close(fd); 74 errno = errno_saved; 75 } else 76 error = -1; 77 if (asroot && injail) 78 expect("priv_vfs_fhopen(asroot, injail)", error, -1, EPERM); 79 if (asroot && !injail) 80 expect("priv_vfs_fhopen(asroot, !injail)", error, 0, 0); 81 if (!asroot && injail) 82 expect("priv_vfs_fhopen(!asroot, injail)", error, -1, EPERM); 83 if (!asroot && !injail) 84 expect("priv_vfs_fhopen(!asroot, !injail)", error, -1, EPERM); 85 } 86 87 void 88 priv_vfs_fhopen_cleanup(int asroot, int injail, struct test *test) 89 { 90 91 if (fpath_initialized) { 92 (void)unlink(fpath); 93 fpath_initialized = 0; 94 } 95 } 96