Taras Kondratiuk 4da5f0018e tipc: compat: allow tipc commands without arguments ... Commit 2753ca5d90 ("tipc: fix uninit-value in tipc_nl_compat_doit") broke older tipc tools that use compat interface (e.g. tipc-config from tipcutils package): % tipc-config -p operation not supported The commit started to reject TIPC netlink compat messages that do not have attributes. It is too restrictive because some of such messages are valid (they don't need any arguments): % grep 'tx none' include/uapi/linux/tipc_config.h #define TIPC_CMD_NOOP 0x0000 /* tx none, rx none */ #define TIPC_CMD_GET_MEDIA_NAMES 0x0002 /* tx none, rx media_name(s) */ #define TIPC_CMD_GET_BEARER_NAMES 0x0003 /* tx none, rx bearer_name(s) */ #define TIPC_CMD_SHOW_PORTS 0x0006 /* tx none, rx ultra_string */ #define TIPC_CMD_GET_REMOTE_MNG 0x4003 /* tx none, rx unsigned */ #define TIPC_CMD_GET_MAX_PORTS 0x4004 /* tx none, rx unsigned */ #define TIPC_CMD_GET_NETID 0x400B /* tx none, rx unsigned */ #define TIPC_CMD_NOT_NET_ADMIN 0xC001 /* tx none, rx none */ This patch relaxes the original fix and rejects messages without arguments only if such arguments are expected by a command (reg_type is non zero). Fixes: 2753ca5d90 ("tipc: fix uninit-value in tipc_nl_compat_doit") Cc: stable@vger.kernel.org Signed-off-by: Taras Kondratiuk <takondra@cisco.com> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2019-08-01 18:14:00 -04:00
..
addr.c
addr.h
bcast.c
bcast.h
bearer.c
bearer.h
core.c
core.h
diag.c
discover.c
discover.h
eth_media.c
group.c
group.h
ib_media.c
Kconfig
link.c
link.h
Makefile
monitor.c
monitor.h
msg.c
msg.h
name_distr.c	tipc: ensure head->lock is initialised	2019-07-12 15:34:26 -07:00
name_distr.h
name_table.c
name_table.h
net.c
net.h
netlink_compat.c	tipc: compat: allow tipc commands without arguments	2019-08-01 18:14:00 -04:00
netlink.c
netlink.h
node.c	tipc: initialize 'validated' field of received packets	2019-07-17 15:24:38 -07:00
node.h
socket.c	tipc: fix unitilized skb list crash	2019-07-30 14:39:36 -07:00
socket.h
subscr.c
subscr.h
sysctl.c	proc/sysctl: add shared variables for range check	2019-07-18 17:08:07 -07:00
topsrv.c	tipc: Fix a typo	2019-07-21 11:41:01 -07:00
topsrv.h
trace.c
trace.h
udp_media.c
udp_media.h