January 2022 - Devel - libvirt List Archives

[PATCH v2 0/4] qemu_tpm: Get swtpm pid without binary validation
by Vasiliy Ulyanov 02 Feb '22

02 Feb '22

v2 of https://listman.redhat.com/archives/libvir-list/2022-January/msg00008.html The v2 series introduces the new approach following the previous review comments. It adds a function for pidfile lock validation (i.e. if its locked by the expected process) and adds the new check to virPidFileReadPathIfAlive. The daemonization and pidfile handling for swtpm command are now handled by libvirt. The fix to qemu_vhost_user_gpu is currently done by visual code checking. Not really sure how to test e2e as I dont have a quick reproducer atm :( Note: I wasn't sure about the refactoring of virPidFileReadPathIfAlive (i.e. whether to remove the binary path from there). For now decided to introduce the new lock check only if the path is not provided. But I am open for suggestions on how to better fit the new check. Vasiliy Ulyanov (4): virfile: Add virFileGetLockOwner function virpidfile: Refactor virPidFileReadPathIfAlive qemu_tpm: Get swtpm pid without binary validation qemu: gpu: Get pid without binary validation src/libvirt_private.syms | 1 + src/qemu/qemu_tpm.c | 26 +++++++++----------- src/qemu/qemu_vhost_user_gpu.c | 9 +++---- src/util/virfile.c | 45 ++++++++++++++++++++++++++++++++++ src/util/virfile.h | 2 ++ src/util/virpidfile.c | 20 +++++++++++++++ 6 files changed, 82 insertions(+), 21 deletions(-) -- 2.34.1

3 9

[libvirt PATCH 0/2] qemu: QEMU_AUDIO_DRV fixes and cleanups
by Andrea Bolognani 02 Feb '22

02 Feb '22

Andrea Bolognani (2): qemu: Correctly translate QEMU_AUDIO_DRV=wav qemu: Drop qemuAudioDriver enumeration src/qemu/qemu_command.c | 46 +++++++++++++++++++++++++++++------------ src/qemu/qemu_command.h | 3 +++ src/qemu/qemu_domain.c | 16 ++++---------- 3 files changed, 40 insertions(+), 25 deletions(-) -- 2.34.1

2 4

[libvirt PATCH 0/4] move virParseVersionString to virstring.c
by Ján Tomko 02 Feb '22

02 Feb '22

And clean up some includes while doing it. Ján Tomko (4): maint: add required includes util: virParseVersionString: move to virstring.c virParseVersionString: rename to virStringParseVersion maint: remove unnecessary virutil.h includes src/bhyve/bhyve_driver.c | 2 +- src/ch/ch_conf.c | 2 +- src/esx/esx_vi.c | 9 ++--- src/libvirt_private.syms | 2 +- src/lxc/lxc_driver.c | 2 +- src/nwfilter/nwfilter_ebiptables_driver.c | 6 +-- src/openvz/openvz_conf.c | 3 +- src/util/virdnsmasq.c | 3 +- src/util/virfirewalld.c | 4 +- src/util/virstring.c | 48 +++++++++++++++++++++++ src/util/virstring.h | 4 ++ src/util/virutil.c | 46 ---------------------- src/util/virutil.h | 3 -- src/vbox/vbox_common.c | 2 +- src/vmware/vmware_conf.c | 3 +- src/vz/vz_utils.c | 2 +- tests/testutilsqemu.c | 3 +- tests/utiltest.c | 2 +- tools/virt-host-validate-common.c | 2 +- 19 files changed, 73 insertions(+), 75 deletions(-) -- 2.34.1

3 6

[libvirt PATCH] qemu: virtiofs: check whether the supplied binary exists
by Ján Tomko 02 Feb '22

02 Feb '22

Report an error upfront if the binary does not exist or is not executable. https://bugzilla.redhat.com/show_bug.cgi?id=1999372 Signed-off-by: Ján Tomko <jtomko(a)redhat.com> --- src/qemu/qemu_virtiofs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/qemu/qemu_virtiofs.c b/src/qemu/qemu_virtiofs.c index 1b853a5a59..7e3324b017 100644 --- a/src/qemu/qemu_virtiofs.c +++ b/src/qemu/qemu_virtiofs.c @@ -184,6 +184,13 @@ qemuVirtioFSStart(virQEMUDriver *driver, VIR_AUTOCLOSE logfd = -1; int rc; + if (!virFileIsExecutable(fs->binary)) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("virtiofsd binary '%s' is not executable"), + fs->binary); + return -1; + } + if (!virFileExists(fs->src->path)) { virReportError(VIR_ERR_INTERNAL_ERROR, _("the virtiofs export directory '%s' does not exist"), -- 2.31.1

2 1

[libvirt PATCH v5 0/7] cgroup and thread management in ch driver
by Praveen K Paladugu 02 Feb '22

02 Feb '22

This patchset adds support for cgroup management of ch threads. This version correctly manages cgroups for vcpu and emulator threads created by ch. cgroup management for iothreads is not yet supported. Along with cgroup management, this patchset also enables support for pinning vcpu and emulator threads to selected host cpus. v5: * bumped the verion of callbacks in ch driver to 8.1.0 v4: * addressed all open comments in v3 * dropped all the merged commits v3: * addrressed all the formatting comments in v2 patch set * dropped indentation patches are they do not adhere to libvirt coding style * fixed build issue in qemu driver that was introduced in v2 Praveen K Paladugu (3): qemu,hypervisor: refactor some cgroup mgmt methods ch_process: Setup emulator and iothread settings ch_driver: emulator threadinfo & pinning callbacks Vineeth Pillai (4): ch: methods for cgroup mgmt in ch driver ch_driver,ch_domain: vcpupin callback in ch driver ch_driver: enable typed param string for numatune ch_driver: add numatune callbacks for CH driver src/ch/ch_conf.c | 2 + src/ch/ch_conf.h | 4 +- src/ch/ch_domain.c | 64 ++++ src/ch/ch_domain.h | 18 +- src/ch/ch_driver.c | 590 +++++++++++++++++++++++++++++++++ src/ch/ch_monitor.c | 156 +++++++++ src/ch/ch_monitor.h | 56 +++- src/ch/ch_process.c | 385 ++++++++++++++++++++- src/ch/ch_process.h | 3 + src/hypervisor/domain_cgroup.c | 457 ++++++++++++++++++++++++- src/hypervisor/domain_cgroup.h | 72 ++++ src/libvirt_private.syms | 14 +- src/qemu/qemu_cgroup.c | 413 +---------------------- src/qemu/qemu_cgroup.h | 11 - src/qemu/qemu_driver.c | 14 +- src/qemu/qemu_hotplug.c | 7 +- src/qemu/qemu_process.c | 24 +- 17 files changed, 1835 insertions(+), 455 deletions(-) -- 2.27.0

2 17

[PATCH 0/4] Couple of misc cleanups
by Michal Privoznik 02 Feb '22

02 Feb '22

*** BLURB HERE *** Michal Prívozník (4): test_driver: Don't leak @group_name lib: Don't set variable to NULL after VIR_FREE() virpcivpdtest: Fix potential double-free() src: Use g_steal_pointer() more src/conf/domain_conf.c | 1 - src/conf/nwfilter_conf.c | 1 - src/esx/esx_vi.c | 6 ++---- src/hyperv/hyperv_driver.c | 8 +++----- src/hyperv/hyperv_wmi.c | 3 +-- src/hypervisor/virhostdev.c | 3 +-- src/libxl/xen_common.c | 12 ++++-------- src/qemu/qemu_hotplug.c | 6 ++---- src/qemu/qemu_migration.c | 9 +++------ src/storage/storage_backend_gluster.c | 9 +++------ src/storage/storage_util.c | 6 ++---- src/test/test_driver.c | 1 - src/util/virfile.c | 3 +-- src/util/virlease.c | 3 +-- src/util/virnuma.c | 9 +++------ tests/virpcivpdtest.c | 4 +++- tests/virtypedparamtest.c | 1 - 17 files changed, 29 insertions(+), 56 deletions(-) -- 2.34.1

3 11

[PATCH v2] docs: expand firmware descriptor to allow flash without NVRAM
by Daniel P. Berrangé 01 Feb '22

01 Feb '22

The current firmware descriptor schema for flash requires that both the executable to NVRAM template paths be provided. This is fine for the most common usage of EDK2 builds in virtualization where the separate _CODE and _VARS files are provided. With confidential computing technology like AMD SEV, persistent storage of variables may be completely disabled because the firmware requires a known clean state on every cold boot. There is no way to express this in the firmware descriptor today. Even with regular EDK2 builds it is possible to create a firmware that has both executable code and variable persistence in a single file. This hasn't been commonly used, since it would mean every guest bootup would need to clone the full firmware file, leading to redundant duplicate storage of the code portion. In some scenarios this may not matter and might even be beneficial. For example if a public cloud allows users to bring their own firmware, such that the user can pre-enroll their own secure boot keys, you're going to have this copied on disk for each tenant already. At this point the it can be simpler to just deal with a single file rather than split builds. The firmware descriptor ought to be able to express this combined firmware model too. This all points towards expanding the schema for flash with a 'mode' concept: - "split" - the current implicit behaviour with separate files for code and variables. - "combined" - the alternate behaviour where a single file contains both code and variables. - "stateless" - the confidential computing use case where storage of variables is completely disable, leaving only the code. Reviewed-by: Philippe Mathieu-Daudé <f4bug(a)amsat.org> Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com> --- docs/interop/firmware.json | 54 ++++++++++++++++++++++++++++++++------ 1 file changed, 46 insertions(+), 8 deletions(-) In v2: - Mark 'mode' as optional field - Misc typos in docs diff --git a/docs/interop/firmware.json b/docs/interop/firmware.json index 8d8b0be030..f5d1d0b6e7 100644 --- a/docs/interop/firmware.json +++ b/docs/interop/firmware.json @@ -210,24 +210,61 @@ 'data' : { 'filename' : 'str', 'format' : 'BlockdevDriver' } } + +## +# @FirmwareFlashType: +# +# Describes how the firmware build handles code versus variable +# persistence. +# +# @split: the executable file contains code while the NVRAM +# template provides variable storage. The executable +# must be configured read-only and can be shared between +# multiple guests. The NVRAM template must be cloned +# for each new guest and configured read-write. +# +# @combined: the executable file contains both code and +# variable storage. The executable must be cloned +# for each new guest and configured read-write. +# No NVRAM template will be specified. +# +# @stateless: the executable file contains code and variable +# storage is not persisted. The executed must +# be configured read-only and can be shared +# between multiple guests. No NVRAM template +# will be specified. +# +# Since: 7.0.0 +## +{ 'enum': 'FirmwareFlashMode', + 'data': [ 'split', 'combined', 'stateless' ] } + ## # @FirmwareMappingFlash: # # Describes loading and mapping properties for the firmware executable # and its accompanying NVRAM file, when @FirmwareDevice is @flash. # -# @executable: Identifies the firmware executable. The firmware -# executable may be shared by multiple virtual machine -# definitions. The preferred corresponding QEMU command -# line options are +# @mode: describes how the firmware build handles code versus variable +# storage. If not present, it must be treated as if it was +# configured with value ``split``. Since: 7.0.0 +# +# @executable: Identifies the firmware executable. The @mode +# indicates whether there will be an associated +# NVRAM template present. The preferred +# corresponding QEMU command line options are # -drive if=none,id=pflash0,readonly=on,file=@executable.@filename,format=@executable.@format # -machine pflash0=pflash0 -# or equivalent -blockdev instead of -drive. +# or equivalent -blockdev instead of -drive. When +# @mode is ``combined`` the executable must be +# cloned before use and configured with readonly=off. # With QEMU versions older than 4.0, you have to use # -drive if=pflash,unit=0,readonly=on,file=@executable.@filename,format=@executable.@format # # @nvram-template: Identifies the NVRAM template compatible with -# @executable. Management software instantiates an +# @executable, when @mode is set to ``split``, +# otherwise it should not be present. +# Management software instantiates an # individual copy -- a specific NVRAM file -- from # @nvram-template.@filename for each new virtual # machine definition created. @nvram-template.@filename @@ -246,8 +283,9 @@ # Since: 3.0 ## { 'struct' : 'FirmwareMappingFlash', - 'data' : { 'executable' : 'FirmwareFlashFile', - 'nvram-template' : 'FirmwareFlashFile' } } + 'data' : { '*mode': 'FirmwareFlashMode', + 'executable' : 'FirmwareFlashFile', + '*nvram-template' : 'FirmwareFlashFile' } } ## # @FirmwareMappingKernel: -- 2.34.1

3 6

[libvirt PATCH] tests: refactor testSELinuxLoadDef
by Ján Tomko 01 Feb '22

01 Feb '22

Since its introduction in commit 907a39e735d256b8428ed4c77009d1f713aea19b Add a test suite for validating SELinux labelling this function did not return NULL on OOM. Since we abort on OOM now, switch testSELinuxMungePath to void, return NULL explicitly on XML parsing failure and remove the (now pointless) cleanup label. Signed-off-by: Ján Tomko <jtomko(a)redhat.com> --- tests/securityselinuxlabeltest.c | 35 +++++++++++--------------------- 1 file changed, 12 insertions(+), 23 deletions(-) diff --git a/tests/securityselinuxlabeltest.c b/tests/securityselinuxlabeltest.c index 09902e1c54..b62162fe9f 100644 --- a/tests/securityselinuxlabeltest.c +++ b/tests/securityselinuxlabeltest.c @@ -82,16 +82,12 @@ testUserXattrEnabled(void) return ret; } -static int +static void testSELinuxMungePath(char **path) { - char *tmp; - - tmp = g_strdup_printf("%s/securityselinuxlabeldata%s", abs_builddir, *path); - - VIR_FREE(*path); + char *tmp = g_strdup_printf("%s/securityselinuxlabeldata%s", abs_builddir, *path); + g_free(*path); *path = tmp; - return 0; } static int @@ -154,7 +150,7 @@ testSELinuxLoadFileList(const char *testname, static virDomainDef * testSELinuxLoadDef(const char *testname) { - char *xmlfile = NULL; + g_autofree char *xmlfile = NULL; virDomainDef *def = NULL; size_t i; @@ -163,15 +159,14 @@ testSELinuxLoadDef(const char *testname) if (!(def = virDomainDefParseFile(xmlfile, driver.xmlopt, NULL, 0))) - goto cleanup; + return NULL; for (i = 0; i < def->ndisks; i++) { if (def->disks[i]->src->type != VIR_STORAGE_TYPE_FILE && def->disks[i]->src->type != VIR_STORAGE_TYPE_BLOCK) continue; - if (testSELinuxMungePath(&def->disks[i]->src->path) < 0) - goto cleanup; + testSELinuxMungePath(&def->disks[i]->src->path); } for (i = 0; i < def->nserials; i++) { @@ -182,23 +177,17 @@ testSELinuxLoadDef(const char *testname) continue; if (def->serials[i]->source->type == VIR_DOMAIN_CHR_TYPE_UNIX) { - if (testSELinuxMungePath(&def->serials[i]->source->data.nix.path) < 0) - goto cleanup; + testSELinuxMungePath(&def->serials[i]->source->data.nix.path); } else { - if (testSELinuxMungePath(&def->serials[i]->source->data.file.path) < 0) - goto cleanup; + testSELinuxMungePath(&def->serials[i]->source->data.file.path); } } - if (def->os.kernel && - testSELinuxMungePath(&def->os.kernel) < 0) - goto cleanup; - if (def->os.initrd && - testSELinuxMungePath(&def->os.initrd) < 0) - goto cleanup; + if (def->os.kernel) + testSELinuxMungePath(&def->os.kernel); + if (def->os.initrd) + testSELinuxMungePath(&def->os.initrd); - cleanup: - VIR_FREE(xmlfile); return def; } -- 2.34.1

2 1

[libvirt PATCH 0/4] libxl: clean up more LIBXL_HAVE constants
by Ján Tomko 01 Feb '22

01 Feb '22

We still were checking for some that were introduced before Xen 4.9 Ján Tomko (4): libxl: assume LIBXL_HAVE_DEVICE_BACKEND_DOMNAME libxl: remove LIBXL_ATTR_UNUSED libxl: assume LIBXL_HAVE_SRM_V2 libxl: assume LIBXL_HAVE_PVUSB src/libxl/libxl_conf.c | 20 ++------------------ src/libxl/libxl_conf.h | 13 +------------ 2 files changed, 3 insertions(+), 30 deletions(-) -- 2.34.1

2 5

[libvirt PATCH] syntax-check: https: list the HTTP-only sites
by Ján Tomko 01 Feb '22

01 Feb '22

Instead of listing the sites that surely support HTTPS, list the ones that don't. Signed-off-by: Ján Tomko <jtomko(a)redhat.com> --- build-aux/syntax-check.mk | 66 ++++++++++++++++++++++++++++++++------- 1 file changed, 54 insertions(+), 12 deletions(-) diff --git a/build-aux/syntax-check.mk b/build-aux/syntax-check.mk index 4d396699c9..d5cdb3c70e 100644 --- a/build-aux/syntax-check.mk +++ b/build-aux/syntax-check.mk @@ -874,20 +874,62 @@ sc_prohibit_obj_free_apis_in_virsh: halt='avoid using public virXXXFree in virsh, use virsh-prefixed wrappers instead' \ $(_sc_search_regexp) -https_sites = www.libvirt.org -https_sites += libvirt.org -https_sites += security.libvirt.org -https_sites += qemu.org -https_sites += www.qemu.org -https_sites += wiki.qemu.org -https_sites += linux-kvm.org -https_sites += www.linux-kvm.org - -https_re= ($(subst $(space),|,$(https_sites))) +# Links in various schemas +http_sites = libvirt.org.*\/schemas\/ +http_sites += \.dtd +http_sites += libosinfo +http_sites += localhost +http_sites += rdf:resource +http_sites += schemas.dmtf.org +http_sites += schemas.microsoft.com +http_sites += schemas.xmlsoap.org +http_sites += www.inkscape.org +http_sites += www.innotek.de +http_sites += www.w3.org +http_sites += xmlns + +# Links in licenses +http_sites += scripts.sil.org +http_sites += www.gnu.org\/licenses\/ +http_sites += www.sun.com + +# Example links +http_sites += example.com +http_sites += example.org +http_sites += herp.derp + +# HTTP-only sites +http_sites += 0pointer.de +http_sites += mah.everybody.org +http_sites += mingw.org +http_sites += munin.projects.linpro.no +http_sites += netcat.sourceforge.net +http_sites += snooze.inria.fr +http_sites += www.nimbusproject.org +http_sites += www.odin.com +http_sites += www.sflow.net +http_sites += xmlsoft.org +http_sites += etallen.com + +# dead sites +http_sites += blog.lystor.org.ua +http_sites += blog.mes-stats.fr +http_sites += cc1.ifj.edu.pl +http_sites += www.javvin.com + +# 404 links +http_sites += publib.boulder.ibm.com +http_sites += kerneltrap.org +http_sites += valloric.github.io +http_sites += www.microsoft.com +http_sites += xenbits.xen.org +http_sites += lovezutto.googlepages.com + +http_re= ($(subst $(space),|,$(http_sites))) sc_prohibit_http_urls: - @prohibit='http://$(https_re)' \ - exclude="/schemas/" \ + @prohibit='http://\w' \ + exclude="$(http_re)" \ halt='Links must use https:// protocol' \ $(_sc_search_regexp) -- 2.34.1

2 1