4d14db0468
Remove read timer in test script when GDB_OPTIONS are set, so that the bash tests won't timeout while running gdb. The only limitation here is that running a script with gdbserver will make the test output mismatch with the expected results, making the test fail. Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com> Message-Id: <20210809090114.64834-9-eesposit@redhat.com> Signed-off-by: Hanna Reitz <hreitz@redhat.com>
407 lines
12 KiB
Bash
407 lines
12 KiB
Bash
#!/usr/bin/env bash
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#
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# This allows for launching of multiple QEMU instances, with independent
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# communication possible to each instance.
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#
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# Each instance can choose, at launch, to use either the QMP or the
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# HMP (monitor) interface.
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#
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# All instances are cleaned up via _cleanup_qemu, including killing the
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# running qemu instance.
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#
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# Copyright (C) 2014 Red Hat, Inc.
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#
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# This program 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 program 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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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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QEMU_COMM_TIMEOUT=10
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QEMU_FIFO_IN="${QEMU_TEST_DIR}/qmp-in-$$"
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QEMU_FIFO_OUT="${QEMU_TEST_DIR}/qmp-out-$$"
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QEMU_HANDLE=0
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export _QEMU_HANDLE=0
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# If bash version is >= 4.1, these will be overwritten and dynamic
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# file descriptor values assigned.
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_out_fd=3
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_in_fd=4
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# Wait for expected QMP response from QEMU. Will time out
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# after 10 seconds, which counts as failure.
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#
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# Override QEMU_COMM_TIMEOUT for a timeout different than the
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# default 10 seconds
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#
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# $1: The handle to use
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# $2+ All remaining arguments comprise the string to search for
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# in the response.
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#
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# If $silent is set to anything but an empty string, then
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# response is not echoed out.
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# If $mismatch_only is set, only non-matching responses will
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# be echoed.
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#
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# If $capture_events is non-empty, then any QMP event names it lists
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# will not be echoed out, but instead collected in the $QEMU_EVENTS
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# variable. The _wait_event function can later be used to receive
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# the cached events.
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#
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# If $only_capture_events is set to anything but an empty string,
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# then an error will be raised if a QMP message is seen which is
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# not an event listed in $capture_events.
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#
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# If $success_or_failure is set, the meaning of the arguments is
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# changed as follows:
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# $2: A string to search for in the response; if found, this indicates
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# success and ${QEMU_STATUS[$1]} is set to 0.
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# $3: A string to search for in the response; if found, this indicates
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# failure and the test is either aborted (if $qemu_error_no_exit
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# is not set) or ${QEMU_STATUS[$1]} is set to -1 (otherwise).
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_timed_wait_for()
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{
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local h=${1}
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shift
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if [ -z "${success_or_failure}" ]; then
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success_match=${*}
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failure_match=
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else
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success_match=${1}
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failure_match=${2}
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fi
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timeout=yes
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QEMU_STATUS[$h]=0
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read_timeout="-t ${QEMU_COMM_TIMEOUT}"
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if [ -n "${GDB_OPTIONS}" ]; then
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read_timeout=
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fi
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while IFS= read ${read_timeout} resp <&${QEMU_OUT[$h]}
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do
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if [ -n "$capture_events" ]; then
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capture=0
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local evname
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for evname in $capture_events
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do
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case ${resp} in
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*\"event\":\ \"${evname}\"* ) capture=1 ;;
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esac
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done
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if [ $capture = 1 ];
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then
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ev=$(echo "${resp}" | tr -d '\r' | tr % .)
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QEMU_EVENTS="${QEMU_EVENTS:+${QEMU_EVENTS}%}${ev}"
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if [ -n "$only_capture_events" ]; then
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return
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else
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continue
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fi
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fi
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fi
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if [ -n "$only_capture_events" ]; then
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echo "Only expected $capture_events but got ${resp}"
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exit 1
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fi
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if [ -z "${silent}" ] && [ -z "${mismatch_only}" ]; then
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echo "${resp}" | _filter_testdir | _filter_qemu \
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| _filter_qemu_io | _filter_qmp | _filter_hmp
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fi
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if [ -n "${failure_match}" ]; then
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grep -q "${failure_match}" < <(echo "${resp}")
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if [ $? -eq 0 ]; then
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timeout=
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break
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fi
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fi
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grep -q "${success_match}" < <(echo "${resp}")
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if [ $? -eq 0 ]; then
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return
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fi
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if [ -z "${silent}" ] && [ -n "${mismatch_only}" ]; then
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echo "${resp}" | _filter_testdir | _filter_qemu \
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| _filter_qemu_io | _filter_qmp | _filter_hmp
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fi
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done
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QEMU_STATUS[$h]=-1
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if [ -z "${qemu_error_no_exit}" ]; then
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if [ -n "${timeout}" ]; then
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echo "Timeout waiting for ${success_match} on handle ${h}"
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else
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echo "Wrong response matching ${failure_match} on handle ${h}"
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fi
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exit 1 # Timeout or wrong match mean the test failed
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fi
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}
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# Sends QMP or HMP command to QEMU, and waits for the expected response
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#
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# $1: QEMU handle to use
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# $2: String of the QMP command to send
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# ${@: -1} (Last string passed)
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# String that the QEMU response should contain. If it is a null
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# string, do not wait for a response
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#
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# Set qemu_cmd_repeat to the number of times to repeat the cmd
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# until either timeout, or a response. If it is not set, or <=0,
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# then the command is only sent once.
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#
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# If neither $silent nor $mismatch_only is set, and $cmd begins with '{',
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# echo the command before sending it the first time.
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#
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# If $qemu_error_no_exit is set, then even if the expected response
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# is not seen, we will not exit. $QEMU_STATUS[$1] will be set it -1 in
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# that case.
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#
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# If $success_or_failure is set, then the last two strings are the
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# strings the response will be scanned for. The first of the two
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# indicates success, the latter indicates failure. Failure is handled
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# like a timeout.
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_send_qemu_cmd()
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{
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local h=${1}
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local count=1
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local cmd=
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local use_error=${qemu_error_no_exit}
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shift
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if [ ${qemu_cmd_repeat} -gt 0 ] 2>/dev/null; then
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count=${qemu_cmd_repeat}
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use_error="no"
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fi
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cmd=$1
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shift
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# Display QMP being sent, but not HMP (since HMP already echoes its
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# input back to output); decide based on leading '{'
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if [ -z "$silent" ] && [ -z "$mismatch_only" ] &&
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[ "$cmd" != "${cmd#\{}" ]; then
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echo "${cmd}" | _filter_testdir | _filter_imgfmt
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fi
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while [ ${count} -gt 0 ]
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do
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echo "${cmd}" >&${QEMU_IN[${h}]}
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if [ -n "${1}" ]; then
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if [ -z "${success_or_failure}" ]; then
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qemu_error_no_exit=${use_error} _timed_wait_for ${h} "${1}"
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else
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qemu_error_no_exit=${use_error} _timed_wait_for ${h} "${1}" "${2}"
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fi
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if [ ${QEMU_STATUS[$h]} -eq 0 ]; then
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return
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fi
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fi
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let count--;
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done
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if [ ${QEMU_STATUS[$h]} -ne 0 ] && [ -z "${qemu_error_no_exit}" ]; then
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echo "Timeout waiting for command ${1} response on handle ${h}"
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exit 1 #Timeout means the test failed
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fi
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}
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# Check event cache for a named QMP event
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#
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# Input parameters:
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# $1: Name of the QMP event to check for
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#
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# Checks if the named QMP event that was previously captured
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# into $QEMU_EVENTS. When matched, the QMP event will be echoed
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# and the $matched variable set to 1.
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#
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# _wait_event is more suitable for test usage in most cases
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_check_cached_events()
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{
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local evname=${1}
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local match="\"event\": \"$evname\""
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matched=0
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if [ -n "$QEMU_EVENTS" ]; then
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CURRENT_QEMU_EVENTS=$QEMU_EVENTS
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QEMU_EVENTS=
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old_IFS=$IFS
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IFS="%"
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for ev in $CURRENT_QEMU_EVENTS
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do
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grep -q "$match" < <(echo "${ev}")
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if [ $? -eq 0 ] && [ $matched = 0 ]; then
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echo "${ev}" | _filter_testdir | _filter_qemu \
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| _filter_qemu_io | _filter_qmp | _filter_hmp
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matched=1
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else
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QEMU_EVENTS="${QEMU_EVENTS:+${QEMU_EVENTS}%}${ev}"
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fi
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done
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IFS=$old_IFS
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fi
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}
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# Wait for a named QMP event
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#
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# Input parameters:
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# $1: QEMU handle to use
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# $2: Name of the QMP event to wait for
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#
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# Checks if the named QMP even was previously captured
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# into $QEMU_EVENTS. If none are present, then waits for the
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# event to arrive on the QMP channel. When matched, the QMP
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# event will be echoed
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_wait_event()
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{
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local h=${1}
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local evname=${2}
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while true
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do
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_check_cached_events $evname
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if [ $matched = 1 ];
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then
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return
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fi
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only_capture_events=1 qemu_error_no_exit=1 _timed_wait_for ${h}
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if [ ${QEMU_STATUS[$h]} -ne 0 ] ; then
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echo "Timeout waiting for event ${evname} on handle ${h}"
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exit 1 #Timeout means the test failed
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fi
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done
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}
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# Launch a QEMU process.
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#
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# Input parameters:
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# $qemu_comm_method: set this variable to 'monitor' (case insensitive)
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# to use the QEMU HMP monitor for communication.
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# Otherwise, the default of QMP is used.
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# $qmp_pretty: Set this variable to 'y' to enable QMP pretty printing.
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# $keep_stderr: Set this variable to 'y' to keep QEMU's stderr output on stderr.
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# If this variable is empty, stderr will be redirected to stdout.
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# Returns:
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# $QEMU_HANDLE: set to a handle value to communicate with this QEMU instance.
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#
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_launch_qemu()
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{
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local comm=
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local fifo_out=
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local fifo_in=
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if (shopt -s nocasematch; [[ "${qemu_comm_method}" == "monitor" ]])
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then
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comm="-monitor stdio"
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else
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local qemu_comm_method="qmp"
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if [ "$qmp_pretty" = "y" ]; then
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comm="-monitor none -qmp-pretty stdio"
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else
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comm="-monitor none -qmp stdio"
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fi
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fi
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fifo_out=${QEMU_FIFO_OUT}_${_QEMU_HANDLE}
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fifo_in=${QEMU_FIFO_IN}_${_QEMU_HANDLE}
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mkfifo "${fifo_out}"
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mkfifo "${fifo_in}"
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object_options=
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if [ -n "$IMGKEYSECRET" ]; then
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object_options="--object secret,id=keysec0,data=$IMGKEYSECRET"
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fi
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if [ -z "$keep_stderr" ]; then
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QEMU_NEED_PID='y'\
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${QEMU} ${object_options} -nographic -serial none ${comm} "${@}" >"${fifo_out}" \
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2>&1 \
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<"${fifo_in}" &
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elif [ "$keep_stderr" = "y" ]; then
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QEMU_NEED_PID='y'\
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${QEMU} ${object_options} -nographic -serial none ${comm} "${@}" >"${fifo_out}" \
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<"${fifo_in}" &
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else
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exit 1
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fi
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if [[ "${BASH_VERSINFO[0]}" -ge "5" ||
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("${BASH_VERSINFO[0]}" -ge "4" && "${BASH_VERSINFO[1]}" -ge "1") ]]
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then
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# bash >= 4.1 required for automatic fd
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exec {_out_fd}<"${fifo_out}"
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exec {_in_fd}>"${fifo_in}"
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else
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let _out_fd++
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let _in_fd++
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eval "exec ${_out_fd}<'${fifo_out}'"
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eval "exec ${_in_fd}>'${fifo_in}'"
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fi
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QEMU_OUT[${_QEMU_HANDLE}]=${_out_fd}
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QEMU_IN[${_QEMU_HANDLE}]=${_in_fd}
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QEMU_STATUS[${_QEMU_HANDLE}]=0
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if [ "${qemu_comm_method}" == "qmp" ]
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then
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# Don't print response, since it has version information in it
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silent=yes _timed_wait_for ${_QEMU_HANDLE} "capabilities"
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if [ "$qmp_pretty" = "y" ]; then
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silent=yes _timed_wait_for ${_QEMU_HANDLE} "^}"
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fi
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fi
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QEMU_HANDLE=${_QEMU_HANDLE}
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let _QEMU_HANDLE++
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}
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# Silently kills the QEMU process
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#
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# If $wait is set to anything other than the empty string, the process will not
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# be killed but only waited for, and any output will be forwarded to stdout. If
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# $wait is empty, the process will be killed and all output will be suppressed.
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_cleanup_qemu()
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{
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# QEMU_PID[], QEMU_IN[], QEMU_OUT[] all use same indices
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for i in "${!QEMU_OUT[@]}"
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do
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local QEMU_PID
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if [ -f "${QEMU_TEST_DIR}/qemu-${i}.pid" ]; then
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read QEMU_PID < "${QEMU_TEST_DIR}/qemu-${i}.pid"
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rm -f "${QEMU_TEST_DIR}/qemu-${i}.pid"
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if [ -z "${wait}" ] && [ -n "${QEMU_PID}" ]; then
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kill -KILL ${QEMU_PID} 2>/dev/null
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fi
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if [ -n "${QEMU_PID}" ]; then
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wait ${QEMU_PID} 2>/dev/null # silent kill
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fi
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fi
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if [ -n "${wait}" ]; then
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cat <&${QEMU_OUT[$i]} | _filter_testdir | _filter_qemu \
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| _filter_qemu_io | _filter_qmp | _filter_hmp
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fi
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rm -f "${QEMU_FIFO_IN}_${i}" "${QEMU_FIFO_OUT}_${i}"
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eval "exec ${QEMU_IN[$i]}<&-" # close file descriptors
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eval "exec ${QEMU_OUT[$i]}<&-"
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unset QEMU_IN[$i]
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unset QEMU_OUT[$i]
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done
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}
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