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1#!/bin/sh
2#
3# Check how SCM_RIGHTS and SCM_CREDENTIALS control messages are decoded in -y mode.
4#
5# Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
6# Copyright (c) 2014-2017 The strace developers.
7# All rights reserved.
8#
9# Redistribution and use in source and binary forms, with or without
10# modification, are permitted provided that the following conditions
11# are met:
12# 1. Redistributions of source code must retain the above copyright
13#    notice, this list of conditions and the following disclaimer.
14# 2. Redistributions in binary form must reproduce the above copyright
15#    notice, this list of conditions and the following disclaimer in the
16#    documentation and/or other materials provided with the distribution.
17# 3. The name of the author may not be used to endorse or promote products
18#    derived from this software without specific prior written permission.
19#
20# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31. "${srcdir=.}/init.sh"
32
33# strace -y is implemented using /proc/$pid/fd
34[ -d /proc/self/fd/ ] ||
35	framework_skip_ '/proc/self/fd/ is not available'
36
37check_prog mkdir
38check_prog seq
39check_prog touch
40
41mkdir dir ||
42	framework_skip_ 'failed to create a directory'
43
44file="dir/$(for i in $(seq 1 127); do echo A; done; echo Z)"
45
46touch -- "$file" ||
47	framework_skip_ 'failed to create a file'
48
49run_prog ../scm_rights /dev/zero
50run_strace -y -x -e%network $args "$file"
51
52hex='[[:xdigit:]]'
53n='[1-9][0-9]*'
54sample="$(for i in $(seq 1 15); do printf '\\\\xf%x' $i; done)"
55socket='<socket:\[[0-9]+\]>'
56
57path6='(/.*/(A\\n){127}Z|\\x2f(\\x'"$hex$hex"')*\\x2f(\\x41\\x0a){127}\\x5a)'
58rights_data='\[4</dev/null>, 5</dev/zero>, 6<'"$path6"'>\]'
59iov='\[\{iov_base="'"$sample"'", iov_len=15\}\]'
60ids='\{pid='"$n"', uid=[0-9]+, gid=[0-9]+\}'
61
62msg_head='\{msg_name=NULL, msg_namelen=0, msg_iov='"$iov"', msg_iovlen=1, msg_control='
63msg_tail=', msg_controllen='"$n"', msg_flags=0'
64rights='\{cmsg_len='"$n"', cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data='"$rights_data"'\}'
65creds='\{cmsg_len='"$n"', cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, cmsg_data='"$ids"'\}'
66
67cat > "$EXP" << __EOF__
68sendmsg\\(3$socket, $msg_head\\[$rights\\]$msg_tail\\}, 0\\) = 15
69recvmsg\\(0$socket, $msg_head\\[$creds, $rights\\]$msg_tail\\}, 0\\) = 15
70__EOF__
71
72match_grep "$LOG" "$EXP"
73