In cgroups v2 there is no devices controller, eBPF should be used
instead.
Changes in v3:
- removed workaround for kernel bug [1]
- added documentation how to get the eBPF program
Changes in v2:
- fixed build on bsd and older kernels without cgroup BPF
- cgroup bpf devices code moved to separate file
Documentation for eBPF:
<http://man7.org/linux/man-pages/man2/bpf.2.html>
<https://www.kernel.org/doc/Documentation/networking/filter.txt>
<https://docs.cilium.io/en/v1.3/bpf/>
[1] <https://bugzilla.redhat.com/show_bug.cgi?id=1656432>
Pavel Hrdina (15):
util: introduce virbpf helpers
vircgroup: introduce virCgroupV2DevicesAvailable
vircgroup: introduce virCgroupV2DevicesAttachProg
vircgroup: introduce virCgroupV2DevicesDetectProg
vircgroup: introduce virCgroupV2DevicesCreateProg
vircgroup: introduce virCgroupV2DevicesPrepareProg
vircgroup: introduce virCgroupV2DevicesRemoveProg
vircgroup: introduce virCgroupV2DeviceGetPerms
vircgroup: introduce virCgroupV2DevicesGetKey
vircgroup: introduce virCgroupV2AllowDevice
vircgroup: introduce virCgroupV2DenyDevice
vircgroup: introduce virCgroupV2AllowAllDevices
vircgroup: introduce virCgroupV2DenyAllDevices
vircgroup: workaround devices in hybrid mode
vircgroupmock: mock virCgroupV2DevicesAvailable
configure.ac | 6 +
include/libvirt/virterror.h | 2 +
src/Makefile.am | 2 +
src/libvirt_private.syms | 26 ++
src/util/Makefile.inc.am | 4 +
src/util/virbpf.c | 438 +++++++++++++++++++
src/util/virbpf.h | 259 ++++++++++++
src/util/vircgroup.c | 3 +-
src/util/vircgroupbackend.h | 3 +-
src/util/vircgrouppriv.h | 10 +
src/util/vircgroupv1.c | 9 +-
src/util/vircgroupv2.c | 117 +++++-
src/util/vircgroupv2devices.c | 670 ++++++++++++++++++++++++++++++
src/util/vircgroupv2devices.h | 57 +++
src/util/virerror.c | 2 +
tests/vircgroupdata/hybrid.parsed | 2 +-
tests/vircgroupmock.c | 7 +
tests/vircgrouptest.c | 4 +-
18 files changed, 1613 insertions(+), 8 deletions(-)
create mode 100644 src/util/virbpf.c
create mode 100644 src/util/virbpf.h
create mode 100644 src/util/vircgroupv2devices.c
create mode 100644 src/util/vircgroupv2devices.h
--
2.20.1
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