Re: [libvirt] [PATCH 4/5] qemu: functions for dealing with input device namespaces and labels

Introudce functions that will let us create the evdevs in namespaces and label the devices on input device hotplug/hotunplug. --- src/qemu/qemu_domain.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_domain.h | 6 ++++ src/qemu/qemu_security.c | 58 ++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_security.h | 6 ++++ 4 files changed, 142 insertions(+) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index b2fc3b816..5831a2025 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -9969,6 +9969,78 @@ qemuDomainNamespaceTeardownRNG(virQEMUDriverPtr driver, } +int +qemuDomainNamespaceSetupInput(virDomainObjPtr vm, + virDomainInputDefPtr input) +{ + qemuDomainObjPrivatePtr priv = vm->privateData; + virQEMUDriverPtr driver = priv->driver; + virQEMUDriverConfigPtr cfg = NULL; + char **devMountsPath = NULL; + size_t ndevMountsPath = 0; + const char *path = NULL; + int ret = -1; + + if (!(path = virDomainInputDefGetPath(input))) + return 0; + + if (!qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT)) + return 0;

+ + cfg = virQEMUDriverGetConfig(driver); + if (qemuDomainGetPreservedMounts(cfg, vm, + &devMountsPath, NULL, + &ndevMountsPath) < 0) + goto cleanup; + + if (qemuDomainAttachDeviceMknod(driver, vm, path, + devMountsPath, ndevMountsPath) < 0) + goto cleanup; + + ret = 0; + cleanup: + virStringListFreeCount(devMountsPath, ndevMountsPath); + virObjectUnref(cfg); + return ret; +} + + +int +qemuDomainNamespaceTeardownInput(virDomainObjPtr vm, + virDomainInputDefPtr input) +{ + qemuDomainObjPrivatePtr priv = vm->privateData; + virQEMUDriverPtr driver = priv->driver; + virQEMUDriverConfigPtr cfg = NULL; + char **devMountsPath = NULL; + size_t ndevMountsPath = 0; + const char *path = NULL; + int ret = -1; + + if (!(path = virDomainInputDefGetPath(input))) + return 0; + + if (!qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT)) + return 0;

+ + cfg = virQEMUDriverGetConfig(driver); + if (qemuDomainGetPreservedMounts(cfg, vm, + &devMountsPath, NULL, + &ndevMountsPath) < 0) + goto cleanup; + + if (qemuDomainDetachDeviceUnlink(driver, vm, path, + devMountsPath, ndevMountsPath) < 0) + goto cleanup; + + ret = 0; + cleanup: + virStringListFreeCount(devMountsPath, ndevMountsPath); + virObjectUnref(cfg); + return ret; +} +