1*cf84ac9aSAndroid Build Coastguard Worker /*
2*cf84ac9aSAndroid Build Coastguard Worker * Copyright (c) 2016 Dmitry V. Levin <[email protected]>
3*cf84ac9aSAndroid Build Coastguard Worker * All rights reserved.
4*cf84ac9aSAndroid Build Coastguard Worker *
5*cf84ac9aSAndroid Build Coastguard Worker * Redistribution and use in source and binary forms, with or without
6*cf84ac9aSAndroid Build Coastguard Worker * modification, are permitted provided that the following conditions
7*cf84ac9aSAndroid Build Coastguard Worker * are met:
8*cf84ac9aSAndroid Build Coastguard Worker * 1. Redistributions of source code must retain the above copyright
9*cf84ac9aSAndroid Build Coastguard Worker * notice, this list of conditions and the following disclaimer.
10*cf84ac9aSAndroid Build Coastguard Worker * 2. Redistributions in binary form must reproduce the above copyright
11*cf84ac9aSAndroid Build Coastguard Worker * notice, this list of conditions and the following disclaimer in the
12*cf84ac9aSAndroid Build Coastguard Worker * documentation and/or other materials provided with the distribution.
13*cf84ac9aSAndroid Build Coastguard Worker * 3. The name of the author may not be used to endorse or promote products
14*cf84ac9aSAndroid Build Coastguard Worker * derived from this software without specific prior written permission.
15*cf84ac9aSAndroid Build Coastguard Worker *
16*cf84ac9aSAndroid Build Coastguard Worker * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17*cf84ac9aSAndroid Build Coastguard Worker * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18*cf84ac9aSAndroid Build Coastguard Worker * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19*cf84ac9aSAndroid Build Coastguard Worker * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20*cf84ac9aSAndroid Build Coastguard Worker * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21*cf84ac9aSAndroid Build Coastguard Worker * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22*cf84ac9aSAndroid Build Coastguard Worker * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23*cf84ac9aSAndroid Build Coastguard Worker * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24*cf84ac9aSAndroid Build Coastguard Worker * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25*cf84ac9aSAndroid Build Coastguard Worker * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26*cf84ac9aSAndroid Build Coastguard Worker */
27*cf84ac9aSAndroid Build Coastguard Worker
28*cf84ac9aSAndroid Build Coastguard Worker #include "tests.h"
29*cf84ac9aSAndroid Build Coastguard Worker #include <asm/unistd.h>
30*cf84ac9aSAndroid Build Coastguard Worker #ifdef HAVE_PRCTL
31*cf84ac9aSAndroid Build Coastguard Worker # include <sys/prctl.h>
32*cf84ac9aSAndroid Build Coastguard Worker #endif
33*cf84ac9aSAndroid Build Coastguard Worker
34*cf84ac9aSAndroid Build Coastguard Worker #if defined HAVE_PRCTL && defined PR_SET_SECCOMP && defined __NR_exit
35*cf84ac9aSAndroid Build Coastguard Worker
36*cf84ac9aSAndroid Build Coastguard Worker # include <stdio.h>
37*cf84ac9aSAndroid Build Coastguard Worker # include <unistd.h>
38*cf84ac9aSAndroid Build Coastguard Worker
39*cf84ac9aSAndroid Build Coastguard Worker int
main(void)40*cf84ac9aSAndroid Build Coastguard Worker main(void)
41*cf84ac9aSAndroid Build Coastguard Worker {
42*cf84ac9aSAndroid Build Coastguard Worker static const char text1[] =
43*cf84ac9aSAndroid Build Coastguard Worker "prctl(PR_SET_SECCOMP, SECCOMP_MODE_STRICT) = 0\n";
44*cf84ac9aSAndroid Build Coastguard Worker static const char text2[] = "+++ exited with 0 +++\n";
45*cf84ac9aSAndroid Build Coastguard Worker
46*cf84ac9aSAndroid Build Coastguard Worker int rc = prctl(PR_SET_SECCOMP, -1L, 1, 2, 3);
47*cf84ac9aSAndroid Build Coastguard Worker printf("prctl(PR_SET_SECCOMP, %#lx /* SECCOMP_MODE_??? */, 0x1, 0x2, 0x3)"
48*cf84ac9aSAndroid Build Coastguard Worker " = %d %s (%m)\n", -1L, rc, errno2name());
49*cf84ac9aSAndroid Build Coastguard Worker fflush(stdout);
50*cf84ac9aSAndroid Build Coastguard Worker
51*cf84ac9aSAndroid Build Coastguard Worker rc = prctl(PR_SET_SECCOMP, 1);
52*cf84ac9aSAndroid Build Coastguard Worker if (rc) {
53*cf84ac9aSAndroid Build Coastguard Worker printf("prctl(PR_SET_SECCOMP, SECCOMP_MODE_STRICT)"
54*cf84ac9aSAndroid Build Coastguard Worker " = %d %s (%m)\n", rc, errno2name());
55*cf84ac9aSAndroid Build Coastguard Worker fflush(stdout);
56*cf84ac9aSAndroid Build Coastguard Worker rc = 0;
57*cf84ac9aSAndroid Build Coastguard Worker } else {
58*cf84ac9aSAndroid Build Coastguard Worker /*
59*cf84ac9aSAndroid Build Coastguard Worker * If kernel implementaton of SECCOMP_MODE_STRICT is buggy,
60*cf84ac9aSAndroid Build Coastguard Worker * the following syscall will result to SIGKILL.
61*cf84ac9aSAndroid Build Coastguard Worker */
62*cf84ac9aSAndroid Build Coastguard Worker rc = write(1, text1, LENGTH_OF(text1)) != LENGTH_OF(text1);
63*cf84ac9aSAndroid Build Coastguard Worker }
64*cf84ac9aSAndroid Build Coastguard Worker
65*cf84ac9aSAndroid Build Coastguard Worker rc += write(1, text2, LENGTH_OF(text2)) != LENGTH_OF(text2);
66*cf84ac9aSAndroid Build Coastguard Worker return !!syscall(__NR_exit, rc);
67*cf84ac9aSAndroid Build Coastguard Worker }
68*cf84ac9aSAndroid Build Coastguard Worker
69*cf84ac9aSAndroid Build Coastguard Worker #else
70*cf84ac9aSAndroid Build Coastguard Worker
71*cf84ac9aSAndroid Build Coastguard Worker SKIP_MAIN_UNDEFINED("HAVE_PRCTL && PR_SET_SECCOMP && __NR_exit")
72*cf84ac9aSAndroid Build Coastguard Worker
73*cf84ac9aSAndroid Build Coastguard Worker #endif
74