diff options
Diffstat (limited to 'tools/regression/priv/priv_settimeofday.c')
-rw-r--r-- | tools/regression/priv/priv_settimeofday.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/tools/regression/priv/priv_settimeofday.c b/tools/regression/priv/priv_settimeofday.c new file mode 100644 index 0000000..d18582f --- /dev/null +++ b/tools/regression/priv/priv_settimeofday.c @@ -0,0 +1,76 @@ +/*- + * Copyright (c) 2006 nCircle Network Security, Inc. + * 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 to invoke settimeofday(). So as not + * to mess up the clock too much, first query the time, then immediately set + * it. + */ + +#include <sys/time.h> + +#include <err.h> +#include <errno.h> +#include <unistd.h> + +#include "main.h" + +void +priv_settimeofday(void) +{ + struct timeval tv; + int error; + + assert_root(); + + /* + * Query time. + */ + if (gettimeofday(&tv, NULL) < 0) + err(-1, "gettimeofday"); + + /* + * Set with privilege. + */ + if (settimeofday(&tv, NULL) < 0) + err(-1, "settimeofday as root"); + + /* + * Set without privilege. + */ + set_euid(UID_OTHER); + + error = settimeofday(&tv, NULL); + if (error == 0) + errx(-1, "settimeofday succeeded as !root"); + if (errno != EPERM) + errx(-1, "settimeofday wrong errno %d as !root", errno); +} |