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# All rights reserved.
7#
8# Redistribution and use in source and binary forms, with or without
9# modification, are permitted provided that the following conditions
10# are met:
11# 1. Redistributions of source code must retain the above copyright
12#    notice, this list of conditions and the following disclaimer.
13# 2. Redistributions in binary form must reproduce the above copyright
14#    notice, this list of conditions and the following disclaimer in the
15#    documentation and/or other materials provided with the distribution.
16# 3. The name of the author may not be used to endorse or promote products
17#    derived from this software without specific prior written permission.
18#
19# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30. "${srcdir=.}/init.sh"
31
32# strace -y is implemented using /proc/$pid/fd
33[ -d /proc/self/fd/ ] ||
34	framework_skip_ '/proc/self/fd/ is not available'
35
36check_prog mkdir
37check_prog rm
38check_prog seq
39check_prog touch
40
41dir="$LOG.dir"
42rm -rf -- "$dir"
43mkdir -- "$dir" ||
44	framework_skip_ 'failed to create a directory'
45
46file="$dir/$(for i in $(seq 1 127); do echo A; done; echo Z)"
47
48touch -- "$file" ||
49	framework_skip_ 'failed to create a file'
50
51run_prog ./scm_rights /dev/zero
52run_strace -y -x -enetwork $args "$file"
53
54hex='[[:xdigit:]]'
55n='[1-9][0-9]*'
56sample="$(for i in $(seq 1 15); do printf '\\\\xf%x' $i; done)"
57socket='<socket:\[[0-9]+\]>'
58
59path6='(/.*/(A\\n){127}Z|\\x2f(\\x'"$hex$hex"')*\\x2f(\\x41\\x0a){127}\\x5a)'
60rights_data='\[4</dev/null>, 5</dev/zero>, 6<'"$path6"'>\]'
61iov='\[\{iov_base="'"$sample"'", iov_len=15\}\]'
62ids='\{pid='"$n"', uid=[0-9]+, gid=[0-9]+\}'
63
64msg_head='\{msg_name=NULL, msg_namelen=0, msg_iov='"$iov"', msg_iovlen=1, msg_control='
65msg_tail=', msg_controllen='"$n"', msg_flags=0'
66rights='\{cmsg_len='"$n"', cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data='"$rights_data"'\}'
67creds='\{cmsg_len='"$n"', cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, cmsg_data='"$ids"'\}'
68
69EXPECTED="$LOG.expected"
70
71cat > "$EXPECTED" << __EOF__
72sendmsg\\(3$socket, $msg_head\\[$rights\\]$msg_tail\\}, 0\\) = 15
73recvmsg\\(0$socket, $msg_head\\[$creds, $rights\\]$msg_tail\\}, 0\\) = 15
74__EOF__
75
76match_grep "$LOG" "$EXPECTED"
77rm -f "$EXPECTED"
78rm -rf -- "$dir"
79
80exit 0
81