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2012-10-23qemu-sockets: add socket_listen, socket_connect, socket_parsePaolo Bonzini
These are QAPI-friendly versions of the qemu-sockets functions. They support IP sockets, Unix sockets, and named file descriptors, using a QAPI union to dispatch to the correct function. Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: return InetSocketAddress from inet_parsePaolo Bonzini
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add error propagation to Unix socket functionsPaolo Bonzini
Before: $ qemu-system-x86_64 -monitor unix:/vvv,server=off connect(unix:/vvv): No such file or directory chardev: opening backend "socket" failed After: $ x86_64-softmmu/qemu-system-x86_64 -monitor unix:/vvv,server=off qemu-system-x86_64: -monitor unix:/vvv,server=off: Failed to connect to socket: No such file or directory chardev: opening backend "socket" failed Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add error propagation to inet_parsePaolo Bonzini
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add error propagation to inet_dgram_optsPaolo Bonzini
Before: $ qemu-system-x86_64 -monitor udp:localhost:631@localhost:631 inet_dgram_opts: bind(ipv4,127.0.0.1,631): OK inet_dgram_opts failed chardev: opening backend "udp" failed After: $ x86_64-softmmu/qemu-system-x86_64 -monitor udp:localhost:631@localhost:631 qemu-system-x86_64: -monitor udp:localhost:631@localhost:631: Failed to bind socket: Address already in use chardev: opening backend "udp" failed Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add error propagation to inet_connect_addrPaolo Bonzini
perror and fprintf can be removed because all clients can now consume Errors properly. However, we'll need to change the non-blocking connect handlers to take an Error, in order to improve error handling for migration with the TCP protocol. This is a minor degradation in error reporting for outgoing migration. However, until 1.2 this case just failed without even attempting to connect, so it is still an improvement as far as overall QoI is concerned. Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: include strerror or gai_strerror output in error messagesPaolo Bonzini
Among others, before: $ qemu-system-x86_64 -chardev socket,port=12345,id=char inet_connect: host and/or port not specified chardev: opening backend "socket" failed After: $ x86_64-softmmu/qemu-system-x86_64 -chardev socket,port=12345,id=char qemu-system-x86_64: -chardev socket,port=12345,id=char: host and/or port not specified chardev: opening backend "socket" failed perror and fprintf can be removed because all clients can now consume Errors properly. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add nonblocking connect for Unix socketsPaolo Bonzini
This patch mostly mimics what was done to TCP sockets, but simpler because there is only one address to try. It also includes a free EINTR bug fix. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: unix_listen and unix_connect are portablePaolo Bonzini
They are just wrappers and do not need a Win32-specific version. Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-23qemu-sockets: add Error ** to all functionsPaolo Bonzini
This lets me adjust the clients to do proper error propagation first, thus avoiding temporary regressions in the quality of the error messages. Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-05cleanup useless return sentenceAmos Kong
This patch cleans up return sentences in the end of void functions. Reported-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
2012-10-05qemu-sockets: Fix compiler warning (regression for MinGW)Stefan Weil
setsockopt needs a type cast for MinGW. That type cast is missing in a recent commit which results in a compiler warning. Like for other socket related functions which have the same problem, we add a 'qemu_setsockopt' macro which provides that type cast where needed and use the new macro to avoid the warning. A 'qemu_getsockopt' is also added and can be used for future modifications. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
2012-09-25Fix address handling in inet_nonblocking_connectOrit Wasserman
getaddrinfo can give us a list of addresses, but we only try to connect to the first one. If that fails we never proceed to the next one. This is common on desktop setups that often have ipv6 configured but not actually working. To fix this make inet_connect_nonblocking retry connection with a different address. callers on inet_nonblocking_connect register a callback function that will be called when connect opertion completes, in case of failure the fd will have a negative value Signed-off-by: Orit Wasserman <owasserm@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-25Separate inet_connect into inet_connect (blocking) and inet_nonblocking_connectOrit Wasserman
No need to add non blocking parameters to the blocking inet_connect add block parameter for inet_connect_opts instead of using QemuOpt "block". Signed-off-by: Orit Wasserman <owasserm@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-25Refactor inet_connect_opts functionMichael S. Tsirkin
refactor address resolution code to fix nonblocking connect remove getnameinfo call Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Orit Wasserman <owasserm@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-23qemu-sockets: Fix potential memory leakStefan Weil
The old code leaks variable 'peer'. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
2012-08-13migration: don't rely on any QERR_SOCKET_*Luiz Capitulino
Use the in_progress argument for QERR_SOCKET_CONNECT_IN_PROGRESS. The other errors are handled the same by checking if the error is set and then calling migrate_fd_error() if it's. It's also necessary to change inet_connect_opts() not to set QERR_SOCKET_CONNECT_IN_PROGRESS. This error is only used by tcp_start_outgoing_migration() and not changing it along with the usage of in_progress would break migration. Furthermore this commit fixes a bug. Today, there's a spurious error report when migration succeeds: (qemu) migrate tcp:0:4444 migrate: Connection can not be completed immediately (qemu) After this commit no spurious error is reported anymore. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
2012-08-13net: inet_connect(), inet_connect_opts(): add in_progress argumentLuiz Capitulino
It's used to indicate the special case where a valid file-descriptor is returned (ie. success) but the connection can't be completed w/o blocking. This is needed because QERR_SOCKET_CONNECT_IN_PROGRESS is not treated like an error and a future commit will drop it. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
2012-08-03socket: clean up redundant assignmentAmos Kong
Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-07-29place qemu-sockets.c contributions since 2012-01-13 under GPLv2+Paolo Bonzini
Past contributions since 2012-01-13 were only made by Red Hat people, so they are already available under GPLv2+. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-04qemu-option: qemu_opts_create(): use error_set()Luiz Capitulino
This commit converts qemu_opts_create() from qerror_report() to error_set(). Currently, most calls to qemu_opts_create() can't fail, so most callers don't need any changes. The two cases where code checks for qemu_opts_create() erros are: 1. Initialization code in vl.c. All of them print their own error messages directly to stderr, no need to pass the Error object 2. The functions opts_parse(), qemu_opts_from_qdict() and qemu_chr_parse_compat() make use of the error information and they can be called from HMP or QMP. In this case, to allow for incremental conversion, we propagate the error up using qerror_report_err(), which keeps the QError semantics Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-By: Laszlo Ersek <lersek@redhat.com>
2012-05-10sockets: use error class to pass listen errorAmos Kong
Add a new argument in inet_listen()/inet_listen_opts() to pass back listen error. Change nbd, qemu-char, vnc to use new interface. Signed-off-by: Amos Kong <akong@redhat.com> Reviewed-by: Orit Wasserman <owasserm@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-05-10sockets: change inet_connect() to support nonblock socketAmos Kong
Add a bool argument to inet_connect() to assign if set socket to block/nonblock, and delete original argument 'socktype' that is unused. Add a new argument to inet_connect()/inet_connect_opts(), to pass back connect error by error class. Retry to connect when -EINTR is got. Connect's successful for nonblock socket when following errors are got, user should wait for connecting by select(): -EINPROGRESS -EWOULDBLOCK (win32) -WSAEALREADY (win32) Change nbd, vnc to use new interface. Signed-off-by: Amos Kong <akong@redhat.com> Reviewed-by: Orit Wasserman <owasserm@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24sockets: Clean up inet_listen_opts()'s convoluted bind() loopMarkus Armbruster
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24sockets: Drop sockets_debug debug codeMarkus Armbruster
I'm trying to improve this code's error reporting, and the debug code is getting in my way: it clutters the code, it clobbers errno in inconvenient places, and it uses the same fprintf() both for error reporting and debug output in a few places. Get rid of it. Once decent error reporting is in place, adding back whatever debug code we need shouldn't be hard. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-11qemu-sockets: Plug fd leak on unix_connect_opts() error pathMarkus Armbruster
Spotted by Coverity. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-20Use glib memory allocation and free functionsAnthony Liguori
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-04-07Set errno=ENOTSUP for attempts to use UNIX sockets on Windows platformsNick Thomas
Signed-off-by: Nick Thomas <nick@bytemark.co.uk> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-05-18qemu-sockets: avoid strlen of NULL pointerJens Osterkamp
If the user wants to create a chardev of type socket but forgets to give a host= option, qemu_opt_get returns NULL. This NULL pointer is then fed into strlen a few lines below without a check which results in a segfault. This fixes it. Signed-off-by: Jens Osterkamp <jens@linux.vnet.ibm.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-09move socket_init to qemu-sockets.cPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-02-10fix inet_parse typoMarcelo Tosatti
qemu_opt_set wants on/off, not yes/no. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-20net: inet_strfamily(): Better unknown family reportLuiz Capitulino
Returning "????" is a bit meaningless, let's call it "unknown". Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-20net: Make inet_strfamily() publicLuiz Capitulino
So that it can be used by other subsystems. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03Don't leak file descriptorsKevin Wolf
We're leaking file descriptors to child processes. Set FD_CLOEXEC on file descriptors that don't need to be passed to children to stop this misbehaviour. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-12Add 'static'Blue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-12Fix sys-queue.h conflict for goodBlue Swirl
Problem: Our file sys-queue.h is a copy of the BSD file, but there are some additions and it's not entirely compatible. Because of that, there have been conflicts with system headers on BSD systems. Some hacks have been introduced in the commits 15cc9235840a22c289edbe064a9b3c19c5f49896, f40d753718c72693c5f520f0d9899f6e50395e94, 96555a96d724016e13190b28cffa3bc929ac60dc and 3990d09adf4463eca200ad964cc55643c33feb50 but the fixes were fragile. Solution: Avoid the conflict entirely by renaming the functions and the file. Revert the previous hacks. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-11convert udp chardev to QemuOpts.Gerd Hoffmann
While being at it: create a new inet_dgram_opts() function for udp setup, so udp can handle IPv6 now. new cmd line syntax: -chardev udp,id=name,host=remotehost,port=remoteport,\ localaddr=bindaddr,localport=bindport Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11sockets: add inet_listen_optsGerd Hoffmann
Add inet_listen_opts(). Does the same as inet_listen(), but uses QemuOpts. inet_listen() is a compatibility wrapper for inet_listen_opts() now and should go away some day. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11sockets: add inet_connect_optsGerd Hoffmann
Add inet_connect_opts(). Does the same as inet_connect(), but uses QemuOpts. inet_connect() is a compatibility wrapper for inet_connect_opts() now and should go away some day. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11sockets: add unix_*_opts for windows.Gerd Hoffmann
Add unix_*_opts function dummys for windows. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11sockets: add unix_listen_optsGerd Hoffmann
Add unix_listen_opts(). Does the same as unix_listen(), but uses QemuOpts. unix_listen() is a compatibility wrapper for unix_listen_opts() now and should go away some day. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11sockets: add unix_connect_optsGerd Hoffmann
Add unix_connect_opts(). Does the same as unix_connect(), but uses QemuOpts. unix_connect() is a compatibility wrapper for unix_connect_opts() now and should go away some day. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-08Fix in file qemu-sockets.cvibi
1) Changed usage of malloc,free,strdup to qemu_malloc,qemu_free,qemu_strdup 2) Some coding style fixes (based on CODING_STYLE document) 3) Free struct addrinfo *res after failure of listen Signed-off-by: vibi <vibi_sreenivasan@cms.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-01-14Fix some more warningsblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6300 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-22Use qemu_isfoobar and qemu_towombat versions, based on patch by Christoph Eggerblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5774 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-13copyright & license for qemu_sockets.c (Gerd Hoffman)aliguori
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5714 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-11sockets: helper functions for qemu (Gerd Hoffman)aliguori
This patch creates a new source file qemu-sockets.c with a bunch of helper functions to create listening and connected sockets. New features of this code are (a) support for searching for a free port in a given range and (b) support for IPv6. The following patches put that code into use. Compile fixes for Windows added by Anthony Liguori Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5695 c046a42c-6fe2-441c-8c8c-71466251a162
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