Packets captured and logged by the NFLOG target are unicast, so
extend to catch and decode them. To avoid escaping issues, the raw
contents are passed around as hex strings.
Bug: 18335678
Change-Id: Ib7299500baa00080a1f000f9da843eb527363353
1. Accept that parseNetlinkMessage can only parse one netlink
message, because its way of returning output is to modify its
member variables (mAction, mParams, etc.). Currently, it
loops through all the messages it finds, updating its member
variables as it goes along, and always returns true at the end
of the buffer. This has the following problems:
1. Since the function always returns true even when no
messages were parsed, the caller has no way to know if
parsing succeeded, and we get lots of "No subsystem found
in netlink event" logs if the buffer did not contain any
valid messages we were interested in.
2. If there are multiple messages in the buffer, all but the
last message will be silently ignored.
3. If there are multiple messages and previous messages have
more parameters than the last one, the resulting event will
have a mixture of parameters from multiple messages.
Instead of doing all this, change the contract to "parse the
first valid message of interest in the buffer and return true,
or return false if there were no such messages", and update
the code and the comments accordingly.
2. Modify the caller (NetlinkListener) so it doesn't log an
error when parseBinaryNetlinkMessage returns false, because
this can now simply mean that we weren't interested in that
particular message. parseBinaryNetlinkMessage already logs
more informative errors.
3. Provide utility functions to check received message lengths and
to convert message types to message names.
4. Simplify logging duplicate attributes.
5. Use the appropriate IFLA_xxx macros instead of rolling our own
code to parse link state messages.
6. Move all the parsing code out to per-message-type parsing
functions to order to simplify parseBinaryNetlinkMessage.
Bug: 9180552
Change-Id: I6bbc2f7a104f618674dde2369c1fd5e93ea49430
The RDNSS options (RFC 6106) used to configure DNS servers via
router advertisements are passed from the kernel to userspace via
RTM_NEWNDUSEROPT netlink messages. Add code to NetlinkEvent to
parse them.
Also fix a compiler warning and a couple of style issues.
[Cherry-pick of b185e90dcc]
Bug: 9180552
Change-Id: I6c532c8f0ceef3afdc977a431a036df398013e1a
The change to enable address tracking via netlink incorrectly
changed the subsystem of rtnetlink events from "net" to
"interface". This broke interface add/delete notifications,
which come from the kernel with subsystem "net".
Switch back to "net" and deal with address tracking via new
action codes instead of a new subsystem.
[Cherry-pick of f34861346d]
Bug: 10433320
Change-Id: Ibf30efb426949dfd02304cc1d9adb1c005a539a6
This adds support for parsing RTM_NEWADDR and RTM_DELADDR
netlink messages received on netd's netlink socket and
formatting them them so NetlinkHandler can process them.
Address changes are notified in subsystem "address". Interface
changes, which used to be notified in subsystem "net", are now
notified in subsystem "interface" to avoid confusion.
[Cherry-pick of a4b4e9ad8e]
Bug: 10232006
Change-Id: I93a50e8de17014e118a42f5cc0eb90a0cbfa73cc
The change to enable address tracking via netlink incorrectly
changed the subsystem of rtnetlink events from "net" to
"interface". This broke interface add/delete notifications,
which come from the kernel with subsystem "net".
Switch back to "net" and deal with address tracking via new
action codes instead of a new subsystem.
Bug: 10433320
Change-Id: Ibf30efb426949dfd02304cc1d9adb1c005a539a6
This adds support for parsing RTM_NEWADDR and RTM_DELADDR
netlink messages received on netd's netlink socket and
formatting them them so NetlinkHandler can process them.
Address changes are notified in subsystem "address". Interface
changes, which used to be notified in subsystem "net", are now
notified in subsystem "interface" to avoid confusion.
Bug: 10232006
Change-Id: I93a50e8de17014e118a42f5cc0eb90a0cbfa73cc
xt_IDLETIMER events are used to infer the interface (radio) state
based on a inactivity timeout value.
Change-Id: I755eb54a048ca1c6ce0c646564d61188d8241851
It passes the quota2 name and the device at the time the quota was
reached.
ALERT_NAME=...
INTERFACE=...
This needs the new kernel in which xt_quota2 can log.
Change-Id: Icf5045374e1e33bdd1da0d2a2c183e70903a1fea
To make it easier to be compatible with older existing code, use
default parameters instead of separate functions for setting.
Also, reintroduce the const usage that was not in the original
changes by Stan.
Also fix some indent spacing.
Change-Id: Ice9ec7f0d5c4a0673037e2e04a764d88a98f68eb
Signed-off-by: Mike J. Chen <mjchen@google.com>
This reverts commit 1d504eeb50.
Conflicts:
libsysutils/src/NetlinkEvent.cpp
Bring back the changes from Stan Chesnutt regarding adding NETLINK_ROUTE
processing. The original commit message description was:
Add NETLINK_ROUTE processing to the netlink client code, so that Ethernet
physical-layer up/down events can be tracked. Upper layers will use these
events to enable/disable Ethernet connectivity.
The original change was reverted due to an incompatiblity with Motorola's
ril.so binary. I'll submit a patch to workaround that incompatiblity
separately.
Change-Id: I4e97ac98833b10543e654c63ecae3b9b8c7db44f
Signed-off-by: Mike J. Chen <mjchen@google.com>
The issues were the following:
- The code in decode() didn't handle the degenerate case where the input buffer is full of '@'
- The code in decode() assumed the input buffer is properly zero-terminated.
- The code in decode() would not check that it doesn't overwrite the mParams[] array.
- The code in findParam() would check mParams[i] before checking the value of 'i'
Also remove un-necessary calls to strlen() at runtime.
Change-Id: I8acead959bd10d97c5380b08958fcb796248a010
The original implementation can not find correct parameters for certain
cases. For example, if you have both foo_bar and foo, try to find foo
may be mismatched. The correct way is to match with "=".
Change-Id: I403b1a7b889583a57a4f3a14e575181ce93b10ff
This library contains re-usable classes for common
system level daemons. Initial consumers of this library
are 'nexus' and 'vold2'
Signed-off-by: San Mehat <san@google.com>
