diff options
Diffstat (limited to 'tools/regression/priv/priv_vfs_chown.c')
| -rw-r--r-- | tools/regression/priv/priv_vfs_chown.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/tools/regression/priv/priv_vfs_chown.c b/tools/regression/priv/priv_vfs_chown.c new file mode 100644 index 000000000000..c0c10e640c0d --- /dev/null +++ b/tools/regression/priv/priv_vfs_chown.c @@ -0,0 +1,164 @@ +/*- + * Copyright (c) 2006 nCircle Network Security, Inc. + * Copyright (c) 2007 Robert M. M. Watson + * All rights reserved. + * + * This software was developed by Robert N. M. Watson for the TrustedBSD + * Project under contract to nCircle Network Security, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR, NCIRCLE NETWORK SECURITY, + * INC., OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +/* + * Confirm that privilege is required in the cases using chown(): + * + * - If the process euid does not match the file uid. + * + * - If the target uid is different than the current uid. + * + * - If the target gid changes and we the process is not a member of the new + * group. + */ + +#include <sys/types.h> +#include <sys/stat.h> + +#include <err.h> +#include <errno.h> +#include <stdio.h> +#include <unistd.h> + +#include "main.h" + +static char fpath[1024]; +static int fpath_initialized; + +/* + * Check that changing the uid of a file requires privilege. + */ +int +priv_vfs_chown_uid_setup(int asroot, int injail, struct test *test) +{ + + setup_file("priv_vfs_chown_uid: fpath", fpath, UID_ROOT, GID_WHEEL, + 0600); + fpath_initialized = 1; + return (0); +} + +void +priv_vfs_chown_uid(int asroot, int injail, struct test *test) +{ + int error; + + error = chown(fpath, UID_OWNER, -1); + if (asroot && injail) + expect("priv_vfs_chown_uid(root, jail)", error, 0, 0); + if (asroot && !injail) + expect("priv_vfs_chown_uid(root, !jail)", error, 0, 0); + if (!asroot && injail) + expect("priv_vfs_chown_uid(!root, jail)", error, -1, EPERM); + if (!asroot && !injail) + expect("priv_vfs_chown_uid(!root, !jail)", error, -1, EPERM); +} + +/* + * Check that changing the gid of a file owned by the user is allowed without + * privilege as long as the gid matches the process. + */ +int +priv_vfs_chown_mygid_setup(int asroot, int injail, struct test *test) +{ + + /* + * Create a file with a matching uid to the test process, but not a + * matching gid. + */ + setup_file("priv_vfs_chown_mygid: fpath", fpath, asroot ? UID_ROOT : + UID_OWNER, GID_OTHER, 0600); + fpath_initialized = 1; + return (0); +} + +void +priv_vfs_chown_mygid(int asroot, int injail, struct test *test) +{ + int error; + + error = chown(fpath, -1, asroot ? GID_WHEEL : GID_OWNER); + if (asroot && injail) + expect("priv_vfs_chown_mygid(root, jail)", error, 0, 0); + if (asroot && !injail) + expect("priv_vfs_chown_mygid(root, !jail)", error, 0, 0); + if (!asroot && injail) + expect("priv_vfs_chown_mygid(!root, !jail)", error, 0, 0); + if (!asroot && !injail) + expect("priv_vfs_chown_mygid(!root, !jail)", error, 0, 0); +} + +/* + * Check that changing the gid of a file owned by the user is not allowed + * without privilege if the gid doesn't match the process. + */ +int +priv_vfs_chown_othergid_setup(int asroot, int injail, struct test *test) +{ + + /* + * Create a file with a matching uid to the test process with a + * matching gid. + */ + setup_file("priv_vfs_chown_othergid: fpath", fpath, asroot ? UID_ROOT + : UID_OWNER, asroot ? GID_WHEEL : GID_OWNER, 0600); + fpath_initialized = 1; + return (0); +} + +void +priv_vfs_chown_othergid(int asroot, int injail, struct test *test) +{ + int error; + + error = chown(fpath, -1, GID_OTHER); + if (asroot && injail) + expect("priv_vfs_chown_othergid(root, jail)", error, 0, 0); + if (asroot && !injail) + expect("priv_vfs_chown_othergid(root, !jail)", error, 0, 0); + if (!asroot && injail) + expect("priv_vfs_chown_othergid(!root, !jail)", error, -1, + EPERM); + if (!asroot && !injail) + expect("priv_vfs_chown_othergid(!root, !jail)", error, -1, + EPERM); +} + +void +priv_vfs_chown_cleanup(int asroot, int injail, struct test *test) +{ + + if (fpath_initialized) { + (void)unlink(fpath); + fpath_initialized = 0; + } +} |