diff options
Diffstat (limited to 'tools/regression/priv/priv_sysctl_write.c')
| -rw-r--r-- | tools/regression/priv/priv_sysctl_write.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/tools/regression/priv/priv_sysctl_write.c b/tools/regression/priv/priv_sysctl_write.c new file mode 100644 index 000000000000..7202f30f54b7 --- /dev/null +++ b/tools/regression/priv/priv_sysctl_write.c @@ -0,0 +1,126 @@ +/*- + * Copyright (c) 2006 nCircle Network Security, Inc. + * Copyright (c) 2007 Robert N. 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. + */ + +/* + * Two privileges exist for writing sysctls -- one for sysctls writable only + * outside of jail (PRIV_SYSCTL_WRITE) and one for those also writable inside + * jail (PRIV_SYSCTL_WRITEJAIL). + * + * Test the prior by attempting to write to kern.domainname, and the latter + * by attempting to write to kern.hostname. + */ + +#include <sys/types.h> +#include <sys/sysctl.h> + +#include <err.h> +#include <errno.h> +#include <string.h> +#include <unistd.h> + +#include "main.h" + +#define KERN_HOSTNAME_STRING "kern.hostname" +#define KERN_DOMAINNAME_STRING "kern.domainname" + +static char stored_hostname[1024]; +static char stored_domainname[1024]; + +int +priv_sysctl_write_setup(int asroot, int injail, struct test *test) +{ + size_t len; + int error; + + len = sizeof(stored_hostname); + error = sysctlbyname(KERN_HOSTNAME_STRING, stored_hostname, &len, + NULL, 0); + if (error) { + warn("priv_sysctl_write_setup: sysctlbyname(\"%s\")", + KERN_HOSTNAME_STRING); + return (-1); + } + + len = sizeof(stored_hostname); + error = sysctlbyname(KERN_DOMAINNAME_STRING, stored_domainname, &len, + NULL, 0); + if (error) { + warn("priv_sysctl_write_setup: sysctlbyname(\"%s\")", + KERN_DOMAINNAME_STRING); + return (-1); + } + + return (0); +} + +void +priv_sysctl_write(int asroot, int injail, struct test *test) +{ + int error; + + error = sysctlbyname(KERN_DOMAINNAME_STRING, NULL, NULL, + stored_domainname, strlen(stored_domainname)); + if (asroot && injail) + expect("priv_sysctl_write(asroot, injail)", error, -1, + EPERM); + if (asroot && !injail) + expect("priv_sysctl_write(asroot, !injail)", error, 0, 0); + if (!asroot && injail) + expect("priv_sysctl_write(!asroot, injail)", error, -1, + EPERM); + if (!asroot && !injail) + expect("priv_sysctl_write(!asroot, !injail)", error, -1, + EPERM); +} + +void +priv_sysctl_writejail(int asroot, int injail, struct test *test) +{ + int error; + + error = sysctlbyname(KERN_HOSTNAME_STRING, NULL, NULL, + stored_hostname, strlen(stored_hostname)); + if (asroot && injail) + expect("priv_sysctl_writejail(asroot, injail)", error, 0, 0); + if (asroot && !injail) + expect("priv_sysctl_writejail(asroot, !injail)", error, 0, 0); + if (!asroot && injail) + expect("priv_sysctl_writejail(!asroot, injail)", error, -1, + EPERM); + if (!asroot && !injail) + expect("priv_sysctl_writejail(!asroot, !injail)", error, -1, + EPERM); +} + +void +priv_sysctl_write_cleanup(int asroot, int injail, struct test *test) +{ + +} |