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Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Swen Schillig <swen@linux.ibm.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon Aug 3 22:21:04 UTC 2020 on sn-devel-184
Otherwise it is uninitialised, so...
==22889== Conditional jump or move depends on uninitialised value(s)
==22889== at 0x12257B: ctdb_req_control_data_len (protocol_control.c:39)
==22889== by 0x1228E9: ctdb_req_control_len (protocol_control.c:1786)
==22889== by 0x12A51C: ctdb_client_control_send (client_control.c:101)
==22889== by 0x138BE1: ctdb_tunnel_setup_send (client_tunnel.c:100)
==22889== by 0x10EE4F: tunnel_test_send (tunnel_test.c:135)
==22889== by 0x10EE4F: main (tunnel_test.c:463)
and similar.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This avoids an unnecessary signed/unsigned comparison issue.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
clang reports:
ctdb/protocol/protocol_types.c:5191:3: warning: Value stored to 'ret' is never read
Found by csbuild.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The caller should be able to call TALLOC_FREE() on the returned
strings.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
The new string conversion wrappers detect and flag errors
which occured during the string to integer conversion.
Those modifications required an update of the callees
error checks.
Signed-off-by: Swen Schillig <swen@linux.ibm.com>
Reviewed-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>
Failed to kill the tcp connection that using IPv4-mapped IPv6 address
(e.g. ctdb_killtcp eth0 ::ffff:192.168.200.44:2049
::ffff:192.168.200.45:863).
When the ctdb_killtcp is used to kill the tcp connection, the IPs and
ports in the connection will be parsed to conn.client and conn.server
(call stack: main->ctdb_sock_addr_from_string->ip_from_string). In
the ip_from_string, as we are using IPv4-mapped IPv6 addresses, the
ipv6_from_string will be used to parse ip to addr.ip6 first. The next
step the ipv4_from_string will be used to reparse ip to addr.ip.
As a result, the data that dump from conn.server is "2 0 8 1 192 168
200 44 0 0 0 0 0 0 0 0 0 0 255 255 192 168 200 44 0 0 0 0", the data
from conn.client is "2 0 3 95 192 168 200 45 0 0 0 0 0 0 0 0 0 0 255 255
192 168 200 45 0 0 0 0". The connection will be add to conn_list by
ctdb_connection_list_add. Then the reset_connections_send uses conn_list
as parameter to start to reset connections in the conn_list.
In the reset_connections_send, the database "connections" will be
created. The connections from conn_list will be written to the
database(call db_hash_add), and use the data that dump from conn_client
and conn_server as key.
In the reset_connections_capture_tcp_handler, the
ctdb_sys_read_tcp_packet will receive data on the raw socket. And
extract the IPs and ports from the tcp packet. when extracting IP and
port, the tcp4_extract OR tcp6_extract will be used. Then we got the
new conn.client and conn.server. the data that dump from the
conn.server is "2 0 8 1 192 168 200 44 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0", the data from conn.client is "2 0 3 95 192 168 200 45 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0". Finally, we use the data as key to check
if this connection is one being reset(call db_hash_delete). The
db_hash_delete will return ENOENT. Because the two key that being used
by db_hash_delete and db_hash_add are different.
So, the TCP RST will be NOT sent for the connection forever. We should
initialize addr struct to zero before reparsing as IPV4 in the
ip_from_string.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13839
Signed-off-by: Zhu Shangzhong <zhu.shangzhong@zte.com.cn>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@samba.org>
In order to detect an value overflow error during
the string to integer conversion with strtoul/strtoull,
the errno variable must be set to zero before the execution and
checked after the conversion is performed. This is achieved by
using the wrapper function strtoul_err and strtoull_err.
Signed-off-by: Swen Schillig <swen@linux.ibm.com>
Reviewed-by: Ralph Böhme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
C library buffering API can behave in unexpected fashion if underlying
fd for stdin, stdout or stderr is closed and re-opened.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13520
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
When configured with --picky-developer and using -O3 with gcc 8.1:
../protocol/protocol_util.c: In function ‘ctdb_sock_addr_from_string’:
../protocol/protocol_util.c:282:2: error: ‘strncpy’ specified bound depends on the length of the source argument [-Werror=stringop-overflow=]
strncpy(s, str, len+1);
^~~~~~~~~~~~~~~~~~~~~~
../protocol/protocol_util.c:277:8: 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>
This breaks the build. The new eventd protocol cannot be introduced without
removing the old eventd protocol.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This includes marshalling code for basic data types. This will be used
by other daemons.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This broadcast is misnamed. Both places where this type of broadcast
is used expect the broadcast to go to all active nodes.
Make the corresponding change to the semantics in the daemon by
sending to all active nodes.
There is a mismatch between the ideas of VNN map and active nodes. A
node that is not in the VNN map but is active can still host database
records. These were the same until the LMASTER capability was
introduced and then the logic was not updated.
The only place where the VNN map is relevant is when finding the
location master of a record in the migration code.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13499
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This causes failures to be folded down to 1, which is incorrect.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Volker Lendecke <vl@samba.org>
This allows to tunnel new protocols using ctdb transport.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This and the supporting functions duplicate functionality (parse_ip()
and parse_ip_port()) from common/system_util.c. The old functions
will be removed at a later time.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
