[libvirt] [PATCH 00/15 v5] Unprivileged SG_IO support

Hi, As a result of RFC [1], this implements the unprivleged SG_IO support. Testing is not that enough, but I'd like see the reviewing earlier, and meanwhile I'm not going to give up the further testing. v4 - v5 (5 new patches): * Set sysfs unpriv_sgio when attaching disk * Restore sysfs unpriv_sgio when detaching disk * Error out when attaching disk if it's shared by other (domains), and the disk conf conflicts. * Do not restore sysfs unpriv_sgio when detaching disk if the disk is still being used by other domain(s) * Dump the original unpriv_sgio state in status XML, so that it won't be lost after restarting or reloading libvirtd. v3 - v4: * Rebase on the top * More testing v2 - v3: * Change the XML tag name to "cdbfilter" * Maintain an internal list of shared disks for QEMU driver. Patches 1/10 ~ 4/10 are to introduce the internal list for shared disks. Osier Yang (15): qemu: Introduce a list to maintain the shared disks between domains qemu: Init/Free the list with the driver's lifecyle qemu: Add/remove the shared disk entry during domain's lifecyle qemu: Add/Remove the entry of sharedDisks when live attaching/detaching docs: Add docs and rng schema for new XML cdbfilter conf: Parse and format the new XML tag cdbfilter util: Prepare helpers for unpriv_sgio setting qemu: Manage disk's cdbfilter in domain's lifecycle qemu: Do not restore the sysfs unpriv_sgio if the disk is being shared qemu: Error out when domain starting if the cdbfilter setting conflicts qemu: Set unpriv_sgio when attaching disk qemu: Restore unpriv_sgio when detaching disk qemu: Error out if the shared disk conf conflicts with others when attaching qemu: Do not restore unpriv_sgio if the disk is shared by other domain conf: Save disk's original unpriv_sgio state into status XML docs/formatdomain.html.in | 13 ++- docs/schemas/domaincommon.rng | 52 ++++-- src/conf/domain_conf.c | 106 ++++++++++-- src/conf/domain_conf.h | 13 ++ src/libvirt_private.syms | 5 + src/qemu/qemu_conf.c | 170 ++++++++++++++++++++ src/qemu/qemu_conf.h | 30 ++++ src/qemu/qemu_driver.c | 78 +++++++++ src/qemu/qemu_process.c | 141 ++++++++++++++++- src/qemu/qemu_process.h | 4 + src/util/util.c | 145 +++++++++++++++++ src/util/util.h | 7 + ...ml2argv-disk-scsi-lun-passthrough-cdbfilter.xml | 32 ++++ tests/qemuxml2xmltest.c | 1 + 14 files changed, 761 insertions(+), 36 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-lun-passthrough-cdbfilter.xml Regards, Osier