Since commit:
e36800c linux-user: add signalfd/signalfd4 syscalls
It is now possible to register handlers to a file descriptor
to translate a data stream transiting by this file descriptor.
We can now decode netlink information coming from the guest
and inject a translated one into the host, and vice-versa.
This series is an "RFC" because it works (we can boot a
container using systemd and use iproute tools) but some
problems remain.
Some results (x86_64 host) with some guests:
* ppc: it can boot a debian 8.2/8.3 (Jessie) LXC container
and networking works fine (dhcp and "apt-get upgrade").
"ip link" generates some traces in the kernel log:
"netlink: 8 bytes leftover after parsing attributes in process `ip'."
* ppc64: it can boot a fedora 21 LXC container.
Some issues with dhclient and "dnf update"
-> missing netlink nested types 18 and 26
-> uniplemented instruction "evmheumiaaw"
"ip link" generates some traces in the kernel log:
"netlink: 8 bytes leftover after parsing attributes in process `ip'."
* ppc64le: Debian 8.3 (Jessie).
ip commands work fine, but "apt-get update" generates some netlink
invalid types (and fails):
Unknown target IFA type: 130
Unknown target IFA type: 59722
Unknown target IFA type: 59657
Unknown target IFA type: 15648
Unknown target IFA type: 32008
Unknown target IFA type: 16590
* sh4: container doesn't work but 'ip' in a chroot works well.
* arm: Raspbian 8.3 (Jessie) works fine.
* s390x: container Debian 8.1 boots well, but "apt-get" hangs on
networking (name resolution?).
"ip link" generates some traces in the kernel log:
"netlink: 8 bytes leftover after parsing attributes in process `ip'."
v2:
Check domain before opening socket
Remove cast to int of sizeof()
Move NLMSG_DONE into the switch()
Fix '{' in 'case:'
Reorder data types by type size
Add new conversions (IFLA_STATS, IFLA_STATS64, IFLA_MAP)
Add warning for nested type (not supported)
Add logs with gemu_log()
Don't convert rta_len and rta_type in the error case
Laurent Vivier (3):
linux-user: add rtnetlink(7) support
linux-user: support netlink protocol NETLINK_KOBJECT_UEVENT
linux-user: add netlink audit
linux-user/syscall.c | 643 ++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 637 insertions(+), 6 deletions(-)
--
2.5.5
