mirror of
https://github.com/qemu/qemu.git
synced 2025-10-27 13:30:41 +00:00
5759322ab0
In addition, drop the nbd_unix_socket assignment in 241 because it does not really do anything. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20191017133155.5327-6-mreitz@redhat.com Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
100 lines
2.8 KiB
Bash
100 lines
2.8 KiB
Bash
#!/usr/bin/env bash
|
|
# -*- shell-script-mode -*-
|
|
#
|
|
# Helpers for NBD server related config
|
|
#
|
|
# Copyright (C) 2018 Red Hat, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
nbd_unix_socket="${SOCK_DIR}/qemu-nbd.sock"
|
|
nbd_tcp_addr="127.0.0.1"
|
|
nbd_pid_file="${TEST_DIR}/qemu-nbd.pid"
|
|
nbd_stderr_fifo="${TEST_DIR}/qemu-nbd.fifo"
|
|
|
|
# If bash version is >= 4.1, this will be overwritten by a dynamically
|
|
# assigned file descriptor value.
|
|
nbd_fifo_fd=10
|
|
|
|
nbd_server_stop()
|
|
{
|
|
local NBD_PID
|
|
if [ -f "$nbd_pid_file" ]; then
|
|
read NBD_PID < "$nbd_pid_file"
|
|
rm -f "$nbd_pid_file"
|
|
if [ -n "$NBD_PID" ]; then
|
|
kill "$NBD_PID"
|
|
fi
|
|
fi
|
|
rm -f "$nbd_unix_socket" "$nbd_stderr_fifo"
|
|
}
|
|
|
|
nbd_server_start_unix_socket()
|
|
{
|
|
nbd_server_stop
|
|
$QEMU_NBD -v -t -k "$nbd_unix_socket" --fork "$@"
|
|
}
|
|
|
|
nbd_server_start_tcp_socket()
|
|
{
|
|
nbd_server_stop
|
|
|
|
mkfifo "$nbd_stderr_fifo"
|
|
for ((port = 10809; port <= 10909; port++))
|
|
do
|
|
# Redirect stderr to FIFO, so we can later decide whether we
|
|
# want to read it or to redirect it to our stderr, depending
|
|
# on whether the command fails or not
|
|
$QEMU_NBD -v -t -b $nbd_tcp_addr -p $port --fork "$@" \
|
|
2> "$nbd_stderr_fifo" &
|
|
|
|
# Taken from common.qemu
|
|
if [[ "${BASH_VERSINFO[0]}" -ge "5" ||
|
|
("${BASH_VERSINFO[0]}" -ge "4" && "${BASH_VERSINFO[1]}" -ge "1") ]]
|
|
then
|
|
exec {nbd_fifo_fd}<"$nbd_stderr_fifo"
|
|
else
|
|
let _nbd_fifo_fd++
|
|
eval "exec ${_nbd_fifo_fd}<'$nbd_stderr_fifo'"
|
|
fi
|
|
wait $!
|
|
|
|
if test $? == 0
|
|
then
|
|
# Success, redirect qemu-nbd's stderr to our stderr
|
|
nbd_tcp_port=$port
|
|
(cat <&$nbd_fifo_fd >&2) &
|
|
eval "exec $nbd_fifo_fd>&-"
|
|
return
|
|
fi
|
|
|
|
# Failure, read the output
|
|
output=$(cat <&$nbd_fifo_fd)
|
|
eval "exec $nbd_fifo_fd>&-"
|
|
|
|
if ! echo "$output" | grep -q "Address already in use"
|
|
then
|
|
# Unknown error, print it
|
|
echo "$output" >&2
|
|
rm -f "$nbd_stderr_fifo"
|
|
exit 1
|
|
fi
|
|
done
|
|
|
|
echo "Cannot find free TCP port for nbd in range 10809-10909"
|
|
rm -f "$nbd_stderr_fifo"
|
|
exit 1
|
|
}
|