122 lines
3.1 KiB
Bash
Executable file
122 lines
3.1 KiB
Bash
Executable file
#!/bin/bash
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#
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# Copyright (C) 2021 Masatake YAMATO <yamato@redhat.com>
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#
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# This file is part of util-linux.
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#
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# This file is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This file is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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TS_TOPDIR="${0%/*}/../.."
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TS_DESC="ownership and hierarchy"
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. "$TS_TOPDIR"/functions.sh
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ts_init "$*"
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# ts_skip_nonroot
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grep -q '#define HAVE_LINUX_NSFS_H' ${top_builddir}/config.h || ts_skip "no ioctl_ns support"
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[ -r /proc/self/ns/user ] || ts_skip "no USER namespace kernel support"
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[ -r /proc/self/ns/pid ] || ts_skip "no PID namespace kernel support"
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ts_check_test_command "$TS_CMD_LSNS"
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ts_check_test_command "$TS_CMD_UNSHARE"
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ts_check_prog "stat"
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ts_check_prog "mkfifo"
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ts_check_prog "touch"
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ts_check_prog "uniq"
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"$TS_CMD_LSNS" > /dev/null 2>&1
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if [ $? -eq 2 ]; then
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ts_skip "ioctl not supported"
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fi
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$TS_CMD_UNSHARE --user --pid --mount-proc --fork true &> /dev/null || ts_skip "no namespace support"
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ts_cd "$TS_OUTDIR"
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# The parent process receives namespaces ids via FIFO_DATA from bash
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# run by unshare. The parent can wait till the bash process provides
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# data.
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FIFO_DATA=$TS_OUTDIR/FIFO_DATA-HIERARCHY
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# The bash process run by unshare waits with this fifo till the parent
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# process exits. As a result, namespaecs referred by the bash
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# process can be alive till the parent process exits.
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FIFO_WAIT=$TS_OUTDIR/FIFO_WAIT-HIERARCHY
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function cleanup {
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rm -f $FIFO_DATA
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rm -f $FIFO_WAIT
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}
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function init {
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cleanup
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mkfifo $FIFO_DATA
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mkfifo $FIFO_WAIT
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}
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init
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(
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exec 4> $FIFO_WAIT
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my_userns=$(stat -c %i -L /proc/self/ns/user)
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my_pidns=$(stat -c %i -L /proc/self/ns/pid)
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read child_userns < $FIFO_DATA
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read child_pidns < $FIFO_DATA
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expected="$child_userns $my_userns $my_userns"
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actual=$("$TS_CMD_LSNS" -t user -n -o NS,PNS,ONS "$child_userns" | uniq)
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test "$expected" = "$actual"
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RESULT=$?
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if [ $RESULT -ne 0 ]; then
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echo
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echo userns expected: "$expected"
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echo userns actual: "$actual"
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echo "$TS_CMD_LSNS":
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LSNS_DEBUG=all "$TS_CMD_LSNS"
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cleanup
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exit $RESULT
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fi
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expected="$child_pidns $my_pidns $child_userns"
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actual=$("$TS_CMD_LSNS" -t pid -n -o NS,PNS,ONS "$child_pidns" | uniq)
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test "$expected" = "$actual"
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RESULT=$?
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if [ $RESULT -ne 0 ]; then
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echo
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echo pidns expected: "$expected"
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echo pidns actual: "$actual"
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echo "$TS_CMD_LSNS":
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LSNS_DEBUG=all "$TS_CMD_LSNS"
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cleanup
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fi
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exit $RESULT
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) >> $TS_ERRLOG 2>&1 &
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mainpid=$!
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(
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exec 4< $FIFO_WAIT
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$TS_CMD_UNSHARE --user --pid --mount-proc --fork bash -s > $FIFO_DATA <<'EOF'
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stat -c %i -L /proc/self/ns/user
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stat -c %i -L /proc/self/ns/pid
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# Wait till FIFO_WAIT is closed.
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read -u 4
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EOF
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) &
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subpid=$!
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wait $subpid
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wait $mainpid
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RESULT=$?
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echo $RESULT >> $TS_OUTPUT
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cleanup
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ts_finalize
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