[libvirt] [PATCH] qemu: Avoid using ".(null)" in UNIX socket path
Jiri Denemark
jdenemar at redhat.com
Tue Jun 30 11:49:10 UTC 2015
The code which generates paths for UNIX socket blindly used target name
without checking if it was set. Thus for the following device XML
<channel type='unix'>
<source mode='bind'/>
<target type='virtio'/>
</channel>
we would generate "/var/lib/libvirt/qemu/channel/target/NAME.(null)"
path which works but is not really correct. Let's not use the
".target_name" suffix at all if target name is not set.
https://bugzilla.redhat.com/show_bug.cgi?id=1226854
Signed-off-by: Jiri Denemark <jdenemar at redhat.com>
---
src/qemu/qemu_domain.c | 20 +++++++++---
.../qemuxml2argv-channel-virtio-unix.args | 19 +++++++++++
.../qemuxml2argv-channel-virtio-unix.xml | 37 ++++++++++++++++++++++
tests/qemuxml2argvtest.c | 5 +++
4 files changed, 77 insertions(+), 4 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-channel-virtio-unix.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-channel-virtio-unix.xml
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 6213fd9..404489c 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -1249,11 +1249,23 @@ qemuDomainDeviceDefPostParse(virDomainDeviceDefPtr dev,
dev->data.chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_CHANNEL &&
dev->data.chr->targetType == VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO &&
dev->data.chr->source.type == VIR_DOMAIN_CHR_TYPE_UNIX &&
- !dev->data.chr->source.data.nix.path && cfg) {
- if (virAsprintf(&dev->data.chr->source.data.nix.path, "%s/%s.%s",
- cfg->channelTargetDir,
- def->name, dev->data.chr->target.name) < 0)
+ !dev->data.chr->source.data.nix.path) {
+ if (!cfg) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("cannot generate UNIX socket path"));
goto cleanup;
+ }
+
+ if (dev->data.chr->target.name) {
+ if (virAsprintf(&dev->data.chr->source.data.nix.path, "%s/%s.%s",
+ cfg->channelTargetDir,
+ def->name, dev->data.chr->target.name) < 0)
+ goto cleanup;
+ } else {
+ if (virAsprintf(&dev->data.chr->source.data.nix.path, "%s/%s",
+ cfg->channelTargetDir, def->name) < 0)
+ goto cleanup;
+ }
dev->data.chr->source.data.nix.listen = true;
}
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio-unix.args b/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio-unix.args
new file mode 100644
index 0000000..43a34ce
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio-unix.args
@@ -0,0 +1,19 @@
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \
+/usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -nodefconfig -nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/test-monitor,server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-no-acpi \
+-boot c \
+-device virtio-serial-pci,id=virtio-serial1,bus=pci.0,addr=0xa \
+-device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x3 \
+-usb \
+-hda /dev/HostVG/QEMUGuest1 \
+-chardev socket,id=charchannel0,path=\
+/tmp/QEMUGuest1.org.qemu.guest_agent.0,server,nowait \
+-device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,\
+name=org.qemu.guest_agent.0 \
+-chardev socket,id=charchannel1,path=/tmp/QEMUGuest1,server,nowait \
+-device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1 \
+-chardev socket,id=charchannel2,path=/tmp/QEMUGuest1.ble,server,nowait \
+-device virtserialport,bus=virtio-serial0.0,nr=3,chardev=charchannel2,id=channel2,\
+name=ble
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio-unix.xml b/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio-unix.xml
new file mode 100644
index 0000000..7fac943
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio-unix.xml
@@ -0,0 +1,37 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219136</memory>
+ <vcpu placement='static' cpuset='1-4,8-20,525'>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu</emulator>
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'/>
+ <controller type='ide' index='0'/>
+ <controller type='virtio-serial' index='1'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
+ </controller>
+ <channel type='unix'>
+ <target type='virtio' name='org.qemu.guest_agent.0'/>
+ </channel>
+ <channel type='unix'>
+ <target type='virtio'/>
+ </channel>
+ <channel type='unix'>
+ <target type='virtio' name='ble'/>
+ </channel>
+ <memballoon model='none'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 4154601..6f8332d 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -519,6 +519,9 @@ mymain(void)
driver.config->spiceTLS = 1;
if (VIR_STRDUP_QUIET(driver.config->spicePassword, "123456") < 0)
return EXIT_FAILURE;
+ VIR_FREE(driver.config->channelTargetDir);
+ if (VIR_STRDUP_QUIET(driver.config->channelTargetDir, "/tmp") < 0)
+ return EXIT_FAILURE;
# define DO_TEST_FULL(name, migrateFrom, migrateFd, flags, ...) \
do { \
@@ -1113,6 +1116,8 @@ mymain(void)
DO_TEST("channel-virtio-default",
QEMU_CAPS_DEVICE, QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG,
QEMU_CAPS_SPICE, QEMU_CAPS_CHARDEV_SPICEVMC);
+ DO_TEST("channel-virtio-unix",
+ QEMU_CAPS_DEVICE, QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG);
DO_TEST("smartcard-host",
QEMU_CAPS_CHARDEV, QEMU_CAPS_DEVICE,
--
2.4.5
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