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73 lines
2.9 KiB
73 lines
2.9 KiB
4 months ago
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#!/bin/sh
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#
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# Check how SCM_RIGHTS and SCM_CREDENTIALS control messages are decoded in -y mode.
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#
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# Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
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# Copyright (c) 2014-2017 The strace developers.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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. "${srcdir=.}/init.sh"
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# strace -y is implemented using /proc/$pid/fd
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[ -d /proc/self/fd/ ] ||
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framework_skip_ '/proc/self/fd/ is not available'
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check_prog mkdir
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check_prog seq
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check_prog touch
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mkdir dir ||
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framework_skip_ 'failed to create a directory'
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file="dir/$(for i in $(seq 1 127); do echo A; done; echo Z)"
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touch -- "$file" ||
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framework_skip_ 'failed to create a file'
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run_prog ../scm_rights /dev/zero
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run_strace -y -x -e%network $args "$file"
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hex='[[:xdigit:]]'
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n='[1-9][0-9]*'
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sample="$(for i in $(seq 1 15); do printf '\\\\xf%x' $i; done)"
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socket='<socket:\[[0-9]+\]>'
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path6='(/.*/(A\\n){127}Z|\\x2f(\\x'"$hex$hex"')*\\x2f(\\x41\\x0a){127}\\x5a)'
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rights_data='\[4</dev/null>, 5</dev/zero>, 6<'"$path6"'>\]'
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iov='\[\{iov_base="'"$sample"'", iov_len=15\}\]'
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ids='\{pid='"$n"', uid=[0-9]+, gid=[0-9]+\}'
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msg_head='\{msg_name=NULL, msg_namelen=0, msg_iov='"$iov"', msg_iovlen=1, msg_control='
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msg_tail=', msg_controllen='"$n"', msg_flags=0'
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rights='\{cmsg_len='"$n"', cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data='"$rights_data"'\}'
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creds='\{cmsg_len='"$n"', cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, cmsg_data='"$ids"'\}'
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cat > "$EXP" << __EOF__
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sendmsg\\(3$socket, $msg_head\\[$rights\\]$msg_tail\\}, 0\\) = 15
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recvmsg\\(0$socket, $msg_head\\[$creds, $rights\\]$msg_tail\\}, 0\\) = 15
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__EOF__
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match_grep "$LOG" "$EXP"
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