1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
#!/usr/bin/env python
#
# Seccomp Library test program
#
# Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.
# Author: Tom Hromatka <tom.hromatka@oracle.com>
#
#
# This library is free software; you can redistribute it and/or modify it
# under the terms of version 2.1 of the GNU Lesser General Public License as
# published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
# for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library; if not, see <http://www.gnu.org/licenses>.
#
import argparse
import sys
import util
from seccomp import *
denylist = [
"times",
"ptrace",
"getuid",
"syslog",
"getgid",
"setuid",
"setgid",
"geteuid",
"getegid",
"setpgid",
"getppid",
"getpgrp",
"setsid",
"setreuid",
"setregid",
"getgroups",
"setgroups",
"setresuid",
"getresuid",
"setresgid",
"getresgid",
"getpgid",
"setfsuid",
"setfsgid",
]
def test():
action = util.parse_action(sys.argv[1])
if not action == ALLOW:
quit(1)
util.install_trap()
f = SyscallFilter(TRAP)
f.set_attr(Attr.CTL_TSYNC, 1)
f.set_attr(Attr.CTL_OPTIMIZE, 2)
# NOTE: additional syscalls required for python
f.add_rule(ALLOW, "stat")
f.add_rule(ALLOW, "fstat")
f.add_rule(ALLOW, "open")
f.add_rule(ALLOW, "openat")
f.add_rule(ALLOW, "mmap")
f.add_rule(ALLOW, "munmap")
f.add_rule(ALLOW, "read")
f.add_rule(ALLOW, "write")
f.add_rule(ALLOW, "close")
f.add_rule(ALLOW, "rt_sigaction")
f.add_rule(ALLOW, "rt_sigreturn")
f.add_rule(ALLOW, "sigreturn")
f.add_rule(ALLOW, "sigaltstack")
f.add_rule(ALLOW, "brk")
f.add_rule(ALLOW, "exit_group")
for syscall in denylist:
f.add_rule(KILL, syscall)
f.load()
try:
util.write_file("/dev/null")
except OSError as ex:
quit(ex.errno)
quit(160)
test()
# kate: syntax python;
# kate: indent-mode python; space-indent on; indent-width 4; mixedindent off;
|
