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If we found that the connection is broken, there's no point
in trying to use it anymore, so just return the first error we detected.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15202
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This also returns an error if we got TCP_FIN from the peer,
which is only reported by an explicit POLLRDHUP check.
Also on FreeBSD getsockopt(fd, SOL_SOCKET, SO_ERROR) fetches
and resets the error, so a 2nd call no longer returns an error.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15202
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
tsocket_address_inet_from_hostport_strings() on top of
tsocket_address_inet_from_strings(), implementing the ability to parse a
port number appended to an IPv6 or IPv4 address. IPv6 addresses can also
optionally have square brackets around them, but these are needed to
specify the port number as colon is used to delimit port from the IP
address in the string.
Note that this code just recognises and parses the strings with port
given, or just IPv6 with square brackets. The rest of the parsing is
passed on to tsocket_address_inet_from strings(), and errors from there
passed back up the stack.
Signed-off-by: Matthew Grant <grantma@mattgrant.net.nz>
Reviewed-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This fixes the following build error on freebsd.
[1567/3959] Compiling lib/tsocket/tsocket_bsd.c
../../lib/tsocket/tsocket_bsd.c:415:8: error: use of undeclared identifier 'EAI_ADDRFAMILY'
case EAI_ADDRFAMILY:
^
On FreeBSD EAI_ADDRFAMILY is obsoleted. Here's the relevant excerpt
from netdb.h on FreeBSD 13.
-----------------------------------------------------------------
/*
* Error return codes from gai_strerror(3), see RFC 3493.
*/
#if 0
/* Obsoleted on RFC 2553bis-02 */
#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
#endif
-----------------------------------------------------------------
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Uri Simchoni <uri@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Sep 16 19:42:19 UTC 2021 on sn-devel-184
Fix setting errno on all failure modes of
tsocket_address_inet_from_strings.
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon Sep 13 22:27:59 UTC 2021 on sn-devel-184
This is different compared to the raw usage of [e]poll
where [E]POLLOUT is enough to see errors via POLLERR/POLLHUP.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Make sure the lrbsda pointer is not allocated and we will
not end up dereferencing a NULL pointer. In practice this
can't happen, but this change links the pointer with the
code that uses it.
Found by Coverity.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Jun 30 02:53:02 CEST 2016 on sn-devel-144
Netlink sockets don't support querying pending bytes with ioctl(fd,
FIONREAD, ...) and would return EOPNOTSUPP, so use recvmsg() with
MSG_PEEK|MSG_TRUNC as a fallback.
The MSG_TRUNC flag to recvmsg() is Linux only, but netlink is as well,
so we're safe for now.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11714
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Wed Feb 10 10:30:24 CET 2016 on sn-devel-144
Non-blockging connect() either returns immediate success, or -1 with
errno EINPROGESS as indication that the connection is pending. All other
errnos indicate immediate failure.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ira Cooper <ira@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Fri Jun 19 01:05:17 CEST 2015 on sn-devel-104
This is similar to tdgram_inet_udp_socket(), but it allows
the use of ipv4 broadcast traffic.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11316
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This is similar to tstream_bsd_existing_socket().
Both help to migrate strange code path to using the tstream or tdgram
abstractions.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11316
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The code stripped port numbers above 9999 down to 4 digits.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon Jul 1 21:10:53 CEST 2013 on sn-devel-104
The writev system call can return -1 and errno ENOMEM, as a
retriable condition.
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Mar 13 23:50:05 CET 2013 on sn-devel-104
This matches what was done for lib/socket/socket_unix.c in
c692bb02b039ae8fef6ba968fd13b36ad7d62a72.
(and is based on that patch by Landon Fuller <landonf@bikemonkey.org>)
Andrew Bartlett
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Mon Mar 4 11:15:35 CET 2013 on sn-devel-104
We only do the optimization on recvfrom/readv if the caller asked for it.
This is needed because in most cases we preferr to flush send
buffers before receiving incoming requests.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
If the socket is not readable yet, we need to retry
if tsocket_bsd_pending() returns 0.
See also
https://lists.samba.org/archive/samba-technical/2012-October/087164.html
metze
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Tue Oct 23 14:44:21 CEST 2012 on sn-devel-104
It's possible for a client to send 0 bytes in a UDP packet,
we need still need to call recvfrom() and skip the invalid
packet at a higher level. Otherwise the kernel receive queue
is blocked.
metze
tstream_inet_tcp_connect_send() usually only gets no local port number
and it may use the wildcard address '0.0.0.0' or '::'.
tstream_inet_tcp_connect_recv() provides the used local address and port
which are used on the wire.
metze
We got random double free errors, when getting events from
epoll_wait() and try to dereference the private talloc pointer
attached to it.
Before doing the close() in the tstream_disconnect_send() function
we need to delete the fd event.
commit 38f505530ba06323a56c7d3914630efffcd12629 only fixed it for
tdgram sockets.
metze
We got random double free errors, when getting events from
epoll_wait() and try to dereference the private talloc pointer
attached to it.
Before doing the close() in the tstream_disconnect_send() function
we need to delete the fd event.
metze
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Tue Sep 28 01:02:55 UTC 2010 on sn-devel-104
the code used this pattent:
if (fd < 0) {
...various cleanups...
return fd;
}
it is much clearer to do this:
if (fd < 0) {
...various cleanups...
return -1;
}
as otherwise when reading the code you think this function may return
a fd.
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
This reverts commit 63fc3978089df403d7e63462593784ff3d05e6e7.
We now don't support IPv6 when IPV6_V6ONLY isn't available,
as we rely on the behavior.
metze
The previous code assumed the OS would happily accept sizeof(struct
sockaddr_storage). It seems some versions of Solaris do not like
this.
Andrew Bartlett
Which was:
tsocket/bsd: fix bug #7115 FreeBSD includes the UDP header in FIONREAD
Metze, this has to have been wrong - you are throwing away the talloc_realloc
pointer returned. Also no error checking. Please review.
Thank goodness for gcc warnings :-).
Jeremy.
This is needed because, we can't use sizeof(sockaddr_storage) for AF_UNIX
sockets. Also some platforms require exact values for AF_INET and AF_INET6.
metze
