[PATCH v7 00/14] qemu: Introduce shared_filesystems configuration option

The need to have something like this in the first place is driven by KubeVirt (see [1] and [2]). A draft version of this series has been integrated into KubeVirt and it has been confirmed that it was effective in removing the need to use LD_PRELOAD hacks in the storage provider. Changes from [v6]: * only skip metadata locking for the swtpm lock file; * other tweaks based on review feedback. Changes from [v5]: * make migration of domains with TPM work (patches 12 and 13); * fixed all typos for "remember"; * added R-bs for Peter's patches. Changes from [v4] (v5 was posted by Peter): * added patch 7 cleaning up a helper function (noticed just while reading the code) * added patch 8 properly unrefing security labels in dac/selinux drivers on outgoing migration * patch 11: added handling of the 'nvram' image file (and refactored the function to allow reuse) Changes from [v3] (v4 was posted by Peter): * patch 2/8 was modified to change the docs for the new option. * patches 1-5 will get an R-b by me as I've adopted them. * patches 6, 9-11 are new. * patches 7, 8 were not part of v3 Changes from [v2]: * added canonicalization for user-provided paths; * fixed compilation issues when AppArmor support is enabled. Changes from [v1]: * documented more explicitly that the newly introduced option is intended for very specific scenarios and not general usage; as part of this, the NEWS update has been dropped too; * made a few tweaks and addressed a few oversight based on review feedback; * several preparatory cleanup patches have been pushed. Changes from [v0]: * reworked approach. [v6] https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/7T... [v5] https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/HN... [v4] https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/FW... [v3] https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/PI... [v2] https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/XP... [v1] https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/XE... [v0] https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/MM... [1] https://issues.redhat.com/browse/CNV-34322 [2] https://issues.redhat.com/browse/CNV-39370 Andrea Bolognani (8): security: Fix alignment qemu: Introduce shared_filesystems configuration option qemu: Propagate shared_filesystems utils: Use overrides in virFileIsSharedFS() qemu: Always set labels for TPM state security: Always forget labels for TPM state directory security: Allow skipping locking when labeling lock files qemu: Handle locking of TPM state directory for incoming migration Peter Krempa (6): virFileIsSharedFSOverride: Export virParseOwnershipIds: Refactor virSecuritySELinuxRestoreImageLabelInt: Move FD image relabeling after 'migrated' check security_(dac|selinux): Unref remembered security labels on outgoing migration storage_source: Add field for skipping seclabel remembering qemu: migration: Don't remember seclabel for images shared from current host src/conf/storage_source_conf.c | 3 + src/conf/storage_source_conf.h | 9 ++ src/libvirt_private.syms | 1 + src/lxc/lxc_controller.c | 3 +- src/lxc/lxc_driver.c | 2 +- src/lxc/lxc_process.c | 4 +- src/qemu/libvirtd_qemu.aug | 3 + src/qemu/qemu.conf.in | 26 +++++ src/qemu/qemu_conf.c | 31 ++++++ src/qemu/qemu_conf.h | 2 + src/qemu/qemu_domain.c | 7 +- src/qemu/qemu_extdevice.c | 2 +- src/qemu/qemu_migration.c | 83 ++++++++++++++-- src/qemu/qemu_security.c | 147 ++++++++++++++++++++-------- src/qemu/qemu_security.h | 6 +- src/qemu/qemu_tpm.c | 51 +++++++--- src/qemu/qemu_tpm.h | 10 +- src/qemu/test_libvirtd_qemu.aug.in | 5 + src/security/security_apparmor.c | 8 +- src/security/security_dac.c | 61 +++++++++--- src/security/security_driver.h | 11 ++- src/security/security_manager.c | 54 ++++++++--- src/security/security_manager.h | 15 ++- src/security/security_nop.c | 5 + src/security/security_selinux.c | 151 +++++++++++++++++++++++------ src/security/security_stack.c | 38 ++++++-- src/util/virfile.c | 63 +++++++++++- src/util/virfile.h | 5 +- src/util/virutil.c | 20 ++-- tests/securityselinuxlabeltest.c | 2 +- tests/virfiletest.c | 2 +- 31 files changed, 666 insertions(+), 164 deletions(-) -- 2.46.2