Currently while parsing domain XML we clear the UNIX path if it matches one of the auto-generated paths by libvirt. After that when the guest is started new path is generated but the mode is also changed to "bind". In the real-world use-case the mode should not change, it only happens if a user provides a mode='connect' and path that matches one of the auto-generated path or not provides a path at all. Before *reconnect* feature was introduced there was no issue, but with the new feature we need to make sure that it's used only with "connect" mode, therefore we need to move the mode change into parsing in order to have a proper error reported by validation code. Signed-off-by: Pavel Hrdina <phrdina@redhat.com> --- src/conf/domain_conf.c | 8 ++++++++ src/qemu/qemu_domain.c | 6 +++--- ...muxml2argv-chardev-reconnect-generated-path.xml | 23 ++++++++++++++++++++++ tests/qemuxml2argvtest.c | 3 +++ 4 files changed, 37 insertions(+), 3 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-chardev-reconnect-generated-path.xml diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index f7574d77b6..9fdd0f90fc 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -4421,6 +4421,14 @@ virDomainDeviceDefPostParseCommon(virDomainDeviceDefPtr dev, chr->target.port = maxport + 1; } + + /* For UNIX chardev if no path is provided we generate one. + * This also implies that the mode is 'bind'. */ + if (chr->source && + chr->source->type == VIR_DOMAIN_CHR_TYPE_UNIX && + !chr->source->data.nix.path) { + chr->source->data.nix.listen = true; + } } /* set default path for virtio-rng "random" backend to /dev/random */ diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index bf57f94a50..ecad68d3bb 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -3489,8 +3489,10 @@ qemuDomainChrDefDropDefaultPath(virDomainChrDefPtr chr, regexp = virBufferContentAndReset(&buf); - if (virStringMatch(chr->source->data.nix.path, regexp)) + if (virStringMatch(chr->source->data.nix.path, regexp)) { VIR_FREE(chr->source->data.nix.path); + chr->source->data.nix.listen = true; + } ret = 0; cleanup: @@ -7441,8 +7443,6 @@ qemuDomainPrepareChannel(virDomainChrDefPtr channel, return -1; } - channel->source->data.nix.listen = true; - return 0; } diff --git a/tests/qemuxml2argvdata/qemuxml2argv-chardev-reconnect-generated-path.xml b/tests/qemuxml2argvdata/qemuxml2argv-chardev-reconnect-generated-path.xml new file mode 100644 index 0000000000..3cb67ecdcc --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-chardev-reconnect-generated-path.xml @@ -0,0 +1,23 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <devices> + <emulator>/usr/bin/qemu-system-i686</emulator> + <controller type='virtio-serial' index='1'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/> + </controller> + <channel type='unix'> + <source mode='connect' path='/tmp/channel/domain-oldname/asdf'> + <reconnect enabled='yes' timeout='10'/> + </source> + <target type='virtio' name='asdf'/> + </channel> + <memballoon model='none'/> + </devices> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 0c0bd16f94..18f06e5aa5 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1351,6 +1351,9 @@ mymain(void) DO_TEST_PARSE_ERROR("chardev-reconnect-invalid-timeout", QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_CHARDEV_RECONNECT); + DO_TEST_PARSE_ERROR("chardev-reconnect-generated-path", + QEMU_CAPS_NODEFCONFIG, + QEMU_CAPS_CHARDEV_RECONNECT); DO_TEST("usb-controller", QEMU_CAPS_NODEFCONFIG); -- 2.13.5