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linux-user,netlink: fix message translation with ip command 

With iproute2-5.8.0, the route, link and addr show commands fail:

  root@sid:~# ip addr show
  RTNETLINK answers: Unknown error 352321537
  Dump terminated
  root@sid:~# ip link show
  RTNETLINK answers: Unknown error 352321537
  Dump terminated
  root@sid:~# ip route show
  RTNETLINK answers: Unknown error 352321537
  Dump terminated

This patch correctly decodes the GETROUTE and GETLINK commands and adds
the RTA_TABLE message.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20201116163622.791442-1-laurent@vivier.eu>
This commit is contained in:
Laurent Vivier 2020-11-16 17:36:22 +01:00
parent cb5ed407a1
commit f536612dc1
1 changed files with 3 additions and 4 deletions
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7
linux-user/fd-trans.c
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@ -1160,6 +1160,7 @@ static abi_long target_to_host_data_route_rtattr(struct rtattr *rtattr)
break;
/* u32 */
case QEMU_RTA_PRIORITY:
case QEMU_RTA_TABLE:
case QEMU_RTA_OIF:
u32 = RTA_DATA(rtattr);
*u32 = tswap32(*u32);
@ -1200,11 +1201,10 @@ static abi_long target_to_host_data_route(struct nlmsghdr *nlh)
struct rtmsg *rtm;
switch (nlh->nlmsg_type) {
case RTM_GETLINK:
break;
case RTM_NEWLINK:
case RTM_DELLINK:
case RTM_SETLINK:
case RTM_GETLINK:
if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) {
ifi = NLMSG_DATA(nlh);
ifi->ifi_type = tswap16(ifi->ifi_type);
@ -1225,10 +1225,9 @@ static abi_long target_to_host_data_route(struct nlmsghdr *nlh)
NLMSG_LENGTH(sizeof(*ifa)));
}
break;
case RTM_GETROUTE:
break;
case RTM_NEWROUTE:
case RTM_DELROUTE:
case RTM_GETROUTE:
if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) {
rtm = NLMSG_DATA(nlh);
rtm->rtm_flags = tswap32(rtm->rtm_flags);