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Since commit 9c51b278b1700cd5f3e2addc19b7c711cc2ea10b the compiler has
been able to inline the affected call to uint16_checksum(). Given
that the data (phdr) is being accessed by an incompatible
pointer (data) there is an aliasing problem when the call is inlined.
This results in incorrect behaviour with -O2/-O3 when compiling with
at least GCC 6, 7, and 8.
Fix this by making the types compatible.
Also fixes CID 1437604 (Reliance on integer endianness). This is a
false positive because the uint16_checksum doesn't depend on the order
of the input uint16_t items.
https://bugzilla.samba.org/show_bug.cgi?id=13588
Pair-programmed-with: Amitay Isaacs <amitay@gmail.com>
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The queue's input buffer is calculated in an iterative way.
This can result in a few back and forth jumping and
a few memory allocations and mem-free cycles.
This is very time consuming and not required, because the required
memory size can be calculated right away.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Aug 18 04:58:05 CEST 2018 on sn-devel-144
The calculation of the bytes to read from the socket can be done easier
by the usage of the common MIN() macro.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Jeremy Allison <jra@samba.org>
After
commit e097b7f8ff1a9992de1d11474dac4969e30cd679
Author: David Disseldorp <ddiss@suse.de>
Date: Sun Jul 31 03:14:54 2011 +0200
io: Make queue_io_read() safe for reentry
the destructor has no purpose anymore, therfore, remove it.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Mon Aug 6 11:37:32 CEST 2018 on sn-devel-144
Provides for listing of scripts and chmod enable/disable.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13551
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
When configured with --picky-developer and using -O3 with gcc 8.1:
../common/system_socket.c: In function ‘parse_ip_mask’:
../common/system_socket.c:229:2: error: ‘strncpy’ specified bound depends on the length of the source argument [-Werror=stringop-overflow=]
strncpy(s, str, len+1);
^~~~~~~~~~~~~~~~~~~~~~
../common/system_socket.c:223:8: note: length computed here
len = strlen(str);
^~~~~~~~~~~
Use strlcpy() instead and check the result.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13545
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Defaulting to host public IP addresses when all nodes are unhealthy
does not obey the principle of least surprise. It has caused much
confusion over the years. It often leads to problems when all nodes
are unhealthy due to something like a cluster filesystem being
unmounted.
Change the default value for this tunable as the first step of
completely removing this behaviour.
Remove tests that set NoIPHostOnAllDisabled=1 and update the expected
result for other tests where no nodes are healthy.
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 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>
