/*-
* Copyright (c) 2009-2011 Robert N. M. Watson
* Copyright (c) 2011 Jonathan Anderson
* All rights reserved.
*
* 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 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.
*/
/*
* Test that fcntl works in capability mode.
*/
#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/capsicum.h>
#include <sys/errno.h>
#include <sys/ipc.h>
#include <sys/mman.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/wait.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "cap_test.h"
/* A filename->descriptor mapping. */
struct fd {
char *f_name;
int f_fd;
};
/*
* Ensure that fcntl() works consistently for both regular file descriptors and
* capability-wrapped ones.
*/
int
test_fcntl(void)
{
int success = PASSED;
cap_rights_t rights = CAP_READ | CAP_FCNTL;
/*
* Open some files of different types, and wrap them in capabilities.
*/
struct fd files[] = {
{ "file", open("/etc/passwd", O_RDONLY) },
{ "socket", socket(PF_LOCAL, SOCK_STREAM, 0) },
{ "SHM", shm_open(SHM_ANON, O_RDWR, 0600) },
};
REQUIRE(files[0].f_fd);
REQUIRE(files[1].f_fd);
REQUIRE(files[2].f_fd);
struct fd caps[] = {
{ "file cap", cap_new(files[0].f_fd, rights) },
{ "socket cap", cap_new(files[1].f_fd, rights) },
{ "SHM cap", cap_new(files[2].f_fd, rights) },
};
REQUIRE(caps[0].f_fd);
REQUIRE(caps[1].f_fd);
REQUIRE(caps[2].f_fd);
struct fd all[] = {
files[0], caps[0],
files[1], caps[1],
files[2], caps[2],
};
const size_t len = sizeof(all) / sizeof(struct fd);
REQUIRE(cap_enter());
/*
* Ensure that we can fcntl() all the files that we opened above.
*/
for (size_t i = 0; i < len; i++)
{
struct fd f = all[i];
int cap;
CHECK_SYSCALL_SUCCEEDS(fcntl, f.f_fd, F_GETFL, 0);
REQUIRE(cap = cap_new(f.f_fd, CAP_READ));
if (fcntl(f.f_fd, F_GETFL, 0) == -1)
FAIL("Error calling fcntl('%s', F_GETFL)", f.f_name);
else
CHECK_NOTCAPABLE(fcntl, cap, F_GETFL, 0);
}
return (success);
}
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