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The system_<os>.c files contain a lot of duplication, making
maintenance difficult. These functions are being merged into
system_socket.c and system.c.
Bring across ctdb_sys_open_capture_socket(),
ctdb_sys_close_capture_socket() and ctdb_sys_read_tcp_packet().
Remove empty system_<os>.c files.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The system_<os>.c files contain a lot of duplication, making
maintenance difficult. These functions are being merged into
system_socket.c and system.c.
Bring across tcp_checksum(), renamed to ip_checksum().
uint16_checksum() becomes static.
Use the BSD struct tcphdr field names for portability. See the
comment in the code for more details about how we get this to compile
on older glibc versions.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The system_<os>.c files contain a lot of duplication, making
maintenance difficult. These functions are being merged into
system_socket.c and system.c.
Bring a copy of tcp_checksum6(), renamed to ip6_checksum().
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The system_<os>.c files contain a lot of duplication, making
maintenance difficult. These functions are being merged into
system_socket.c and system.c.
This function doesn't need ctdb_sock_addr so put it with general
system utilities.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The system_<os>.c files contain a lot of duplication, making
maintenance difficult. These functions are being merged into
system_socket.[ch] and system.[ch].
This function doesn't need ctdb_sock_addr so put it with general
system utilities.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
system_socket.[ch] will contain all the raw socket code and other
functions that use ctdb_sock_addr. system.[ch] will contain other
platform dependent functions.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Configuration reload should reset the values of configuration options
missing from the config file to default.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Jun 29 15:12:37 CEST 2018 on sn-devel-144
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Jun 22 11:57:19 CEST 2018 on sn-devel-144
Usually run_event will stop executing event scripts on first failure.
Optionally it can continue to run events even on failure(s).
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
If event script directory does not exist, then return ENOTDIR. If a
directory gets removed at runtime, report error from scandir in
get_script_list().
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
When an event script directory is empty, do not return script_list as
NULL. Instead return empty script_list with zero scripts.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Allowing run_event_init() to take run_proc_context as an argument allows
to create multiple run_event instances with a single run_proc_context.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
The way run_proc abstraction is used in run_event, there can be maximum
of 2 processes active at any given time. So the memory requirements
can be reduced by using a linked list.
New eventd will have multiple run_event instances but will be limited to
3 or 4. Even then the total number of processes will be less than 10.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Preparation for recommending configuration for each script next to the
actual script.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Found by Coverity.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Thu May 17 01:09:46 CEST 2018 on sn-devel-144
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Sat May 12 15:01:32 CEST 2018 on sn-devel-144
This will allow to add a validator for logging specification.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This will construct correct paths when running with CTDB_TEST_MODE.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
The ioctl SIOCGIFCONF does not return IPv6 addresses, so this function
does not work for IPv6 addresses.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This was an attempt to debug an unexpected situation. It never
triggered, so delete it and all supporting code.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Make use of talloc pools for the sock_queue's memory requirements.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Tue Jan 30 18:12:32 CET 2018 on sn-devel-144
The sock_queue_destructor is not needed.
The performed tasks will be performed automatically.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Prevent further processing of sock_queue_process
if the received packet size is zero.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Tue Nov 21 08:58:45 CET 2017 on sn-devel-144
Fix tests to use wait_send() instead of startup() as a synchronization
point to ensure that the socket is listening.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Move the mkdir_p function to lib/util so it can be used elsewhere
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Sockets need to be created from sock_daemon_run_send(). This means
that stale socket removal can depend on the PID file context being
initialised.
Also fix associated test.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13070
This avoids running event script copies left by a package manager.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
parse_ip() has interface checking for IPv6 that is still used
indirectly by the IP takeover code via parse_ip_mask(). This will be
removed eventually.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Thu Oct 5 09:19:31 CEST 2017 on sn-devel-144
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13056
The only time a ctdb_queue is created without valid fd is when CTDB
is trying to establish connections with other nodes in the cluster.
All the other uses always create a ctdb_queue with valid fd.
This avoids queueing up packets for dead nodes or nodes that are not
running in the cluster and stops consuming memory.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Whenever the current git hash changes, we recompile ctdb.c and
ctdb_daemon.c. As both have quite a few warnings with -Wall, this
makes it quite difficult to see the real warnings that pop up during
development. Centralize the ctdb_version_string to just a single file
without warnings.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This sets up boilerplate required for a client code connecting to a
server over unix domain socket. The communication between client
and server is "request" from client to server and "reply" from
server to client.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Tools like ctdb_killtcp can't route packets to IPv4-mapped IPv6
addresses so this works around that.
Add a test case to confirm that this works.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Sep 1 04:06:32 CEST 2017 on sn-devel-144
Only create PID file when actually starting the daemon, rather than
when setting up the context. This will facilitate future changes.
Tweak test to confirm that PID file is no longer created during setup.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Wed Aug 2 07:28:44 CEST 2017 on sn-devel-144
Otherwise, for example, the file descriptor for the main PID file will
leak all the way down to event scripts.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12898
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This allows to differentiate between the two database models.
ctdb_db_persistent() - replicated and permanent
ctdb_db_volatile() - distributed and temporary
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
The non-blocking logging variants can currently silently drop messages
when the socket queue fills.
In this case, count the number of dropped messages and attempt to log
a message about dropped log messages when the next message is logged.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Setting CTDB_LOGGING to syslog:nonblocking or syslog:udp will cause
ctdbd to crash at startup due to NULL pointer dereference.
Refactoring in commit c9124a001f
introduced this regression.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12814
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Thu Jun 1 15:26:19 CEST 2017 on sn-devel-144
This allows to pass data to a child process via stdin.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This allows to mix CTDB major versions in a single cluster.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Wed May 24 21:06:28 CEST 2017 on sn-devel-144
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12770
DEBUGLEVEL is defined as a const array reference at compile time.
debug_init() converts that to an allocated array reference at run time.
Since debug_init() is a static function, initialize DEBUGLEVEL via
setup_logging().
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Mon May 8 00:12:25 CEST 2017 on sn-devel-144
Signed-off-by: Chris Lamb <chris@chris-lamb.co.uk>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Signed-off-by: Chris Lamb <chris@chris-lamb.co.uk>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12580
comm_write_send() creates a new tevent_req and adds it to the queue
of requests to be processed. If this tevent_req is freed, then the
queue entry is not removed causing use-after-free error.
If the tevent_req returned by comm_write_send() is freed, then that
request should be removed from the queue and any pending actions based
on that request should also be removed.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12510
To be able to terminate the daemon from within the implementation,
create a subreq using wait_send() provided by the implementation.
When the subreq is finished, it signals the sock_daemon code to terminate
the daemon.
This avoids the need to keep track of the top level tevent_req causing
layer violation and keeps the code flow straighforward.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Mon Jan 16 21:16:51 CET 2017 on sn-devel-144
queue->offset currently points to the end of available data. However,
after processing one packet the beginning of the next packet is not
marked explicitly and caused the same packet to be processed again.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12500
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This is now just a wrapper around comm_write_send/recv. This avoids the
extra tevent_req and fixes a bug in the termination of sock_socket_write
computation.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12500
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Introduce a single new tunable IPAllocAlgorithm to set the IP
allocation algorithm. This defaults to 2 for LCP2 IP address
allocation.
Tunables LCP2PublicIPs and DeterministicIPs are obsolete.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This is a generic socket read/write to be used in the ctdb daemon.
It is based on ctdb_io.c and comm.c.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This extracts the code from following files:
- server/ctdb_logging.c
- server/ctdb_logging_file.c
- server/ctdb_logging_syslog.c
This is in preparation for each daemon (and some processes) doing
their own loging instead of relying on CTDB.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Persistent databases are now always recovered by sequence number, so
there is no need for this tunable.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Nov 25 08:13:59 CET 2016 on sn-devel-144
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12392
Feature SCHED_RESET_ON_FORK is completely broken on RHEL6 and RHEL7
distributions. So do not rely on SCHED_RESET_ON_FORK for now.
This reverts commit 1be8564e55.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Tue Oct 25 11:28:28 CEST 2016 on sn-devel-144
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12157
In the AIX case, also add the close of the file.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Drop setting socket non-blocking and close-on-exec. The socket is
closed soon after. Only a single packet is sent, making it almost
impossible for it to block. Also, note that sockets aren't setup this
way for IPv6.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12157
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Occurs on an invalid line that isn't the first. Isn't really a leak
because it is allocated off mem_ctx, which should be freed by the
caller.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12110
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This avoids CTDB spending too much time processing multiple packets and
return to the event loop sooner.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This controls the maximum size of data ctdb will read from sockets at
a time.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Both of these expand to 1. However, AF_LOCAL is a Unix domain socket,
which makes no sense when reading the code.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Thu May 26 11:42:46 CEST 2016 on sn-devel-144
If this fails, we want to know which states it wanted to move to. Don't do the
return before the debug.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
These controls have never been used and also they do not use the server_id
structure defined in samba. In future, similar controls can be added to
register/unregister using proper server_id structure.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11770
From man page of packet(7):
protocol is the IEEE 802.3
protocol number in network byte order. See the <linux/if_ether.h>
include file for a list of allowed protocols. When protocol is set to
htons(ETH_P_ALL), then all protocols are received.
Protocol argument was changed from network order to host order wrongly
in commit 9f8395cb7d.
Specifying "protocol" field to socket(AF_PACKET, ...) call only affects
the packets that are recevied. So use protocol = 0 when sending raw
packets.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Mar 4 12:58:50 CET 2016 on sn-devel-144
This pattern is used quite a few times in the CTDB code. Many
instances use ctdb_kill() but for signal 0 this just calls kill(2)
anyway.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
