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From 2f53c51bac4f9a9c7e490a13f1510eb553046bc3 Mon Sep 17 00:00:00 2001
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Message-Id: <2f53c51bac4f9a9c7e490a13f1510eb553046bc3@dist-git>
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From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>
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Date: Fri, 6 Jul 2018 15:47:01 +0100
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Subject: [PATCH] qemu: don't use chardev FD passing for vhostuser backend
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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https://bugzilla.redhat.com/show_bug.cgi?id=1597940
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QEMU chardevs have a bug which makes the vhostuser backend complain
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about lack of support for FD passing when validating the chardev.
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While this is ultimately QEMU's responsibility to fix, libvirt needs to
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avoid tickling the bug.
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Simply disabling chardev FD passing just for vhostuser's chardev is
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the most prudent approach, avoiding need for a QEMU version number
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check.
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Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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(cherry picked from commit ed5aa85f371aebb0103e712f9a103d011ab9ae43)
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Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
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---
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src/qemu/qemu_command.c | 31 +++++++++++++++--------
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tests/qemuxml2argvdata/net-vhostuser.args | 3 +--
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tests/qemuxml2argvtest.c | 2 +-
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3 files changed, 23 insertions(+), 13 deletions(-)
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diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
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index 0c3ce98caf..637e787d25 100644
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--- a/src/qemu/qemu_command.c
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+++ b/src/qemu/qemu_command.c
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@@ -4938,6 +4938,7 @@ qemuOpenChrChardevUNIXSocket(const virDomainChrSourceDef *dev)
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enum {
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QEMU_BUILD_CHARDEV_TCP_NOWAIT = (1 << 0),
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QEMU_BUILD_CHARDEV_FILE_LOGD = (1 << 1),
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+ QEMU_BUILD_CHARDEV_UNIX_FD_PASS = (1 << 2),
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};
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/* This function outputs a -chardev command line option which describes only the
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@@ -5081,7 +5082,8 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager,
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break;
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case VIR_DOMAIN_CHR_TYPE_UNIX:
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- if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_CHARDEV_FD_PASS)) {
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+ if ((flags & QEMU_BUILD_CHARDEV_UNIX_FD_PASS) &&
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+ virQEMUCapsGet(qemuCaps, QEMU_CAPS_CHARDEV_FD_PASS)) {
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if (qemuSecuritySetSocketLabel(secManager, (virDomainDefPtr)def) < 0)
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goto cleanup;
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int fd = qemuOpenChrChardevUNIXSocket(dev);
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@@ -5437,7 +5439,8 @@ qemuBuildMonitorCommandLine(virLogManagerPtr logManager,
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qemuDomainObjPrivatePtr priv)
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{
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char *chrdev;
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- unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+ unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT |
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+ QEMU_BUILD_CHARDEV_UNIX_FD_PASS;
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if (priv->chardevStdioLogd)
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cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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@@ -5572,7 +5575,8 @@ qemuBuildRNGBackendChrdevStr(virLogManagerPtr logManager,
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char **chr,
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bool chardevStdioLogd)
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{
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- unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+ unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT |
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+ QEMU_BUILD_CHARDEV_UNIX_FD_PASS;
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if (chardevStdioLogd)
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cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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*chr = NULL;
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@@ -8740,7 +8744,8 @@ qemuBuildSmartcardCommandLine(virLogManagerPtr logManager,
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virBuffer opt = VIR_BUFFER_INITIALIZER;
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const char *database;
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const char *contAlias = NULL;
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- unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+ unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT |
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+ QEMU_BUILD_CHARDEV_UNIX_FD_PASS;
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if (chardevStdioLogd)
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cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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@@ -8976,7 +8981,8 @@ qemuBuildShmemCommandLine(virLogManagerPtr logManager,
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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char *devstr = NULL;
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int rc;
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- unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+ unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT |
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+ QEMU_BUILD_CHARDEV_UNIX_FD_PASS;
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if (chardevStdioLogd)
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cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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@@ -9136,7 +9142,8 @@ qemuBuildSerialCommandLine(virLogManagerPtr logManager,
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{
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size_t i;
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bool havespice = false;
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- unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+ unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT |
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+ QEMU_BUILD_CHARDEV_UNIX_FD_PASS;
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if (chardevStdioLogd)
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cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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@@ -9199,7 +9206,8 @@ qemuBuildParallelsCommandLine(virLogManagerPtr logManager,
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bool chardevStdioLogd)
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{
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size_t i;
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- unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+ unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT |
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+ QEMU_BUILD_CHARDEV_UNIX_FD_PASS;
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if (chardevStdioLogd)
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cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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@@ -9236,7 +9244,8 @@ qemuBuildChannelsCommandLine(virLogManagerPtr logManager,
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bool chardevStdioLogd)
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{
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size_t i;
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- unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+ unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT |
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+ QEMU_BUILD_CHARDEV_UNIX_FD_PASS;
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if (chardevStdioLogd)
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cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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@@ -9293,7 +9302,8 @@ qemuBuildConsoleCommandLine(virLogManagerPtr logManager,
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bool chardevStdioLogd)
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{
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size_t i;
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- unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+ unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT |
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+ QEMU_BUILD_CHARDEV_UNIX_FD_PASS;
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if (chardevStdioLogd)
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cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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@@ -9473,7 +9483,8 @@ qemuBuildRedirdevCommandLine(virLogManagerPtr logManager,
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bool chardevStdioLogd)
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{
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size_t i;
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- unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT;
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+ unsigned int cdevflags = QEMU_BUILD_CHARDEV_TCP_NOWAIT |
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+ QEMU_BUILD_CHARDEV_UNIX_FD_PASS;
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if (chardevStdioLogd)
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cdevflags |= QEMU_BUILD_CHARDEV_FILE_LOGD;
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diff --git a/tests/qemuxml2argvdata/net-vhostuser.args b/tests/qemuxml2argvdata/net-vhostuser.args
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index fc4557a1f2..513fc535ab 100644
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--- a/tests/qemuxml2argvdata/net-vhostuser.args
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+++ b/tests/qemuxml2argvdata/net-vhostuser.args
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@@ -14,8 +14,7 @@ QEMU_AUDIO_DRV=none \
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-display none \
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-no-user-config \
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-nodefaults \
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--chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
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-server,nowait \
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+-chardev socket,id=charmonitor,fd=1729,server,nowait \
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-mon chardev=charmonitor,id=monitor,mode=control \
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-rtc base=utc \
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-no-shutdown \
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diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
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index d6911f9344..2d52f352b0 100644
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--- a/tests/qemuxml2argvtest.c
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+++ b/tests/qemuxml2argvtest.c
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@@ -1266,7 +1266,7 @@ mymain(void)
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DO_TEST("misc-no-reboot", NONE);
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DO_TEST("misc-uuid", NONE);
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DO_TEST_PARSE_ERROR("vhost_queues-invalid", NONE);
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- DO_TEST("net-vhostuser", NONE);
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+ DO_TEST("net-vhostuser", QEMU_CAPS_CHARDEV_FD_PASS);
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DO_TEST("net-vhostuser-multiq",
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QEMU_CAPS_VHOSTUSER_MULTIQUEUE);
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DO_TEST_FAILURE("net-vhostuser-multiq", NONE);
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--
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2.18.0
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