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2012-06-09do not include <libutil.h> needlessly or if it doesn't existMichael Tokarev1-6/+0
<libutil.h> and <util.h> on *BSD (some have one, some another) were #included just for openpty() declaration. The only file where this function is actually used is qemu-char.c. In vl.c and net/tap-bsd.c, none of functions declared in libutil.h (login logout logwtmp timdomain openpty forkpty uu_lock realhostname fparseln and a few others depending on version) are used. Initially the code which is currently in qemu-char.c was in vl.c, it has been removed into separate file in commit 0e82f34d077dc2542 Fri Oct 31 18:44:40 2008, but the #includes were left in vl.c. So with vl.c, we just remove includes - libutil.h, util.h and pty.h (which declares only openpty() and forkpty()) from there. The code in net/tap-bsd.c, which come from net/tap.c, had this commit 5281d757efa6e40d74ce124be048b08d43887555 Author: Mark McLoughlin <markmc@redhat.com> Date: Thu Oct 22 17:49:07 2009 +0100 net: split all the tap code out into net/tap.c Note this commit not only moved stuff out of net.c to net/tap.c, but also rewrote large portions of the tap code, and added these completely unnecessary #includes -- as usual, I question why such a misleading commit messages are allowed. Again, no functions defined in libutil.h or util.h on *BSD are used by neither net/tap.c nor net/tap-bsd.c. Removing them. And finally, the only real user for these #includes, qemu-char.c, which actually uses openpty(). There, the #ifdef logic is wrong. A GLIBC-based system has <pty.h>, even if it is a variant of *BSD. So __GLIBC__ should be checked first, and instead of trying to include <libutil.h> or <util.h>, we include <pty.h>. If it is not GLIBC-based, we check for variations between <*util.h> as before. This patch fixes build of qemu 1.1 on Debian/kFreebsd (well, one of the two problems): it is a distribution with a FreeBSD kernel, so it #defines at least __FreeBSD_kernel__, but since it is based on GLIBC, it has <pty.h>, but current version does not have neither <util.h> nor <libutil.h>, which the code tries to include 3 times but uses only once. Signed-off-By: Michael Tokarev <mjt@tls.msk.ru> Cc: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-07build: move net/ objects to nested Makefile.objsPaolo Bonzini1-0/+12
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-06-04net: purge the monitor object from all init functionsLuiz Capitulino11-29/+17
The only backend that really uses it is the socket one, which calls monitor_get_fd(). But it can use 'cur_mon' instead. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-By: Laszlo Ersek <lersek@redhat.com>
2012-05-01Declare state directory in smb.confNikolaus Rath1-0/+2
The smb.conf generated by the userspace networking does not include a state directory directive. Samba therefore falls back to the default value. Since the user generally does not have write access to this path, smbd immediately crashes. The "state directory" option was added in Samba 3.4.0 (commit http://gitweb.samba.org/?p=samba.git;a=commit;h=7b02e05eb64f3ffd7aa1cf027d10a7343c0da757). This patch adds the missing option. Signed-off-by: Nikolaus Rath <Nikolaus@rath.org> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-05-01slirp: don't use "smb ports = 0" optionNikolaus Rath1-1/+0
The "smb ports = 0" option causes recent samba versions to crash. It was introduced in commit 157777ef3e with log message "Samba 3 support". However, a value of 0 has never been officially supported by smb and is also not necessary: if stdin is a socket, smb does not try to listen on any ports and uses just stdin. This is necessary to support inetd based operation (otherwise smbd would always fail when called from inetd, because inetd already listens on the SMB port). Since samba has supported inetd operation since pre-3.x, it should be safe to rely on this feature. I have tested it with Samba 3.6.4 -- communication works fine, and smbd is not listening on any ports. I suspect the "smb ports = 0" hack may have been introduced when someone tested the qemu generated samba config from the command line with "smbd -i" and found it to fail (because then stdin isn't a socket). Signed-off-by: Nikolaus Rath <Nikolaus@rath.org> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-02-10net: remove extra spaces in help messagesBenjamin MARSILI1-4/+4
Signed-off-by: Benjamin MARSILI <mlspirat42@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-02-01Change license from GPLv2 to GPLv2+Stefan Weil1-4/+1
This file only contains code from Red Hat, so it can use GPLv2+. Tested with `git blame -M -C net/checksum.c`. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-01Add support for net bridgeCorey Bryant2-3/+204
The most common use of -net tap is to connect a tap device to a bridge. This requires the use of a script and running qemu as root in order to allocate a tap device to pass to the script. This model is great for portability and flexibility but it's incredibly difficult to eliminate the need to run qemu as root. The only really viable mechanism is to use tunctl to create a tap device, attach it to a bridge as root, and then hand that tap device to qemu. The problem with this mechanism is that it requires administrator intervention whenever a user wants to create a guest. By essentially writing a helper that implements the most common qemu-ifup script that can be safely given cap_net_admin, we can dramatically simplify things for non-privileged users. We still support existing -net tap options as a mechanism for advanced users and backwards compatibility. Currently, this is very Linux centric but there's really no reason why it couldn't be extended for other Unixes. A typical invocation would be similar to one of the following: qemu linux.img -net bridge -net nic,model=virtio qemu linux.img -net tap,helper="/usr/local/libexec/qemu-bridge-helper" -net nic,model=virtio qemu linux.img -netdev bridge,id=hn0 -device virtio-net-pci,netdev=hn0,id=nic1 qemu linux.img -netdev tap,helper="/usr/local/libexec/qemu-bridge-helper",id=hn0 -device virtio-net-pci,netdev=hn0,id=nic1 The default bridge that we attach to is br0. The thinking is that a distro could preconfigure such an interface to allow out-of-the-box bridged networking. Alternatively, if a user wants to use a different bridge, a typical invocation would be simliar to one of the following: qemu linux.img -net bridge,br=qemubr0 -net nic,model=virtio qemu linux.img -net tap,helper="/usr/local/libexec/qemu-bridge-helper --br=qemubr0" -net nic,model=virtio qemu linux.img -netdev bridge,br=qemubr0,id=hn0 -device virtio-net-pci,netdev=hn0,id=nic1 qemu linux.img -netdev tap,helper="/usr/local/libexec/qemu-bridge-helper --br=qemubr0",id=hn0 -device virtio-net-pci,netdev=hn0,id=nic1 Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Richa Marwaha <rmarwah@linux.vnet.ibm.com> Signed-off-by: Corey Bryant <coreyb@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-13prepare for future GPLv2+ relicensingPaolo Bonzini1-0/+3
All files under GPLv2 will get GPLv2+ changes starting tomorrow. event_notifier.c and exec-obsolete.h were only ever touched by Red Hat employees and can be relicensed now. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-12Support for UDP unicast network backendBenjamin1-2/+75
Signed-off-by: Benjamin MARSILI <mlspirat42@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-06net/socket.c: Fix fd leak in net_socket_listen_init() error pathsPeter Maydell1-0/+2
Fix a leak of a file descriptor due to missing closesocket() calls in error paths in net_socket_listen_init(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-20net: store guest timestamp in dump file instead of time since guest startupHervé Poussineau1-1/+6
Stored dates are no more 1970-01-01 (+ run time), but have a real meaning. If someone wants to have comparable timestamps accross boots, it is possible to start qemu with -rtc to give the startup date. Signed-off-by: Hervé Poussineau <hpoussin@reactos.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-20net: truncate output file when using dump backendHervé Poussineau1-1/+1
This prevents data of a previous run to be seen in the new dump file. Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Hervé Poussineau <hpoussin@reactos.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-19slirp: Fix typo in net_slirp_hostfwd_removeGeoffrey Thomas1-1/+1
Report an error when err is nonzero, not when it is zero. Signed-off-by: Geoffrey Thomas <geofft@ldpreload.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-15network scripts: don't block SIGCHLD before forkingMichael Roth1-6/+0
This patch fixes a bug where child processes of launch_script() can misbehave due to SIGCHLD being blocked. In the case of `sudo`, this causes a permanent hang. Previously a SIGCHLD handler was added to reap fork_exec()'d zombie processes by calling waitpid(-1, ...). This required other fork()/waitpid() callers to temporarilly block SIGCHILD to avoid having the final wait status being intercepted by the SIGCHLD handler: 7c3370d4fe3fa6cda8655f109e4659afc8ca4269 Since then, the qemu_add_child_watch() interface was added to allow registration of such processes and reap only from that specific set of PIDs: 4d54ec7898bd951007cb6122d5315584bd41d0c4 As a result, we can now avoid blocking SIGCHLD in launch_script(), so drop that behavior. Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-14Merge remote-tracking branch 'stefanha/trivial-patches-next' into stagingAnthony Liguori2-1/+4
2011-12-12net: take ownership of fd in socket init functionsStefan Hajnoczi1-8/+9
Today net/socket.c has no consistent policy for closing the socket file descriptor when initialization fails. This means we leak the file descriptor in some cases or we could also try to close it twice. Make error paths consistent by taking ownership of the file descriptor and closing it on error. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-12net: expand tabs in net/socket.cStefan Hajnoczi1-38/+41
In order to make later patches sane, expand the tab characters and conform to QEMU coding style now. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-06fix typo: delete redundant semicolonDong Xu Wang1-1/+1
Double semicolons should be single. Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-06net/socket.c : fix memory leakZhi Hui Li1-0/+3
Signed-off-by: Li Zhi Hui <zhihuili@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-11-22slirp: Clean up net_slirp_hostfwd_remove()'s use of get_str_sep()Markus Armbruster1-5/+4
get_str_sep() can fail, but net_slirp_hostfwd_remove() doesn't check. Works, because it initializes buf[] to "", which get_str_sep() doesn't touch when it fails. Coverity doesn't like it, and neither do I. Change it to work exactly like slirp_hostfwd(). Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-11-01net: tap-linux: Fix unhelpful error messageLuiz Capitulino1-1/+5
I'm getting: could not configure /dev/net/tun (tap%d): Operation not permitted When the ioctl() fails, ifr.ifr_name will most likely not be overwritten. So we better only use it when ifname contains a string. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-09-03Allow overriding the location of Samba's smbd.Brad1-1/+1
Allow overriding the location of Samba's smbd. Pretty much every OS I look at has some means of changing this path (patching) so lets just make it easier for OS developers creating packages and/or end users to override the location. Signed-off-by: Brad Smith <brad@comstyle.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-22char: rename qemu_chr_open() -> qemu_chr_new()Anthony Liguori1-1/+1
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-20Use glib memory allocation and free functionsAnthony Liguori3-21/+21
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-07Fix forcing multicast msgs to loopback on OpenBSD.Brad1-2/+8
Fix forcing multicast msgs to loopback on OpenBSD. e.g. $ sudo qemu -m 128 -no-fd-bootchk \ -hda virtual.img -boot n -nographic \ -net nic,vlan=0,model=rtl8139,macaddr=52:54:00:12:34:03 \ -net user -tftp /usr/src/sys/arch/i386/compile/TEST -bootp pxeboot \ -net nic,vlan=1,model=rtl8139,macaddr=52:54:00:23:03:01 \ -net tap,vlan=1,script=no \ -net nic,vlan=3,model=rtl8139,macaddr=52:54:00:23:03:03 \ -net socket,vlan=3,mcast=230.0.0.1:10003 setsockopt(SOL_IP, IP_MULTICAST_LOOP): Invalid argument qemu: -net socket,vlan=3,mcast=230.0.0.1:10003: Device 'socket' could not be initialized Signed-off-by: Brad Smith <brad@comstyle.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-07Fix network interface tap backendManuel Bouyer1-2/+24
Fix network interface tap backend work on NetBSD. It uses an ioctl to get the tap name. Signed-off-by: Christoph Egger<Christoph.Egger@amd.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-25Wrap recv to avoid warningsBlue Swirl1-2/+2
Avoid warnings like these by wrapping recv(): CC slirp/ip_icmp.o /src/qemu/slirp/ip_icmp.c: In function 'icmp_receive': /src/qemu/slirp/ip_icmp.c:418:5: error: passing argument 2 of 'recv' from incompatible pointer type [-Werror] /usr/local/lib/gcc/i686-mingw32msvc/4.6.0/../../../../i686-mingw32msvc/include/winsock2.h:547:32: note: expected 'char *' but argument is of type 'struct icmp *' Remove also casts used to avoid warnings. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-23net: Refactor net_client_typesJan Kiszka1-1/+1
Position entries of net_client_types according to the corresponding values of NET_CLIENT_TYPE_*. The array size is now defined by NET_CLIENT_TYPE_MAX. This will allow to obtain entries based on type value in later patches. At this chance rename NET_CLIENT_TYPE_SLIRP to NET_CLIENT_TYPE_USER for the sake of consistency. CC: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-23slirp: Canonicalize restrict syntaxJan Kiszka1-6/+15
All other boolean arguments accept on|off - except for slirp's restrict. Fix that while still accepting the formerly allowed yes|y|no|n, but reject everything else. This avoids accidentally allowing external connections because syntax errors were so far interpreted as 'restrict=no'. CC: Gleb Natapov <gleb@redhat.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-06-24Strip trailing '\n' from error_report()'s first argumentMarkus Armbruster1-3/+3
error_report() prepends location, and appends a newline. The message constructed from the arguments should not contain a newline. Fix the obvious offenders. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-08slirp: fix guestfwd idAlexander Graf1-1/+1
When using -net user,guestfwd=... Qemu immediately complains about the id being in invalid format. This is because we pass in an id that contains a colon, while the id restrictions don't allow colons. This patch changes the colon into a dot, making guestfwd work again. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-08Fix compilation warning due to missing header for sigaction (followup)Alexandre Raymond1-1/+0
This patch removes all references to signal.h when qemu-common.h is included as they become redundant. Signed-off-by: Alexandre Raymond <cerbere@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-04-15Use qemu-common.h or qemu-timer.h in place of sysemu.hBlue Swirl1-1/+1
In some cases qemu-common.h or qemu-timer.h can be used in place of sysemu.h. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-04-15Remove unused sysemu.h include directivesBlue Swirl2-2/+0
Remove unused sysemu.h include directives to speed up build with the following patches. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-03-21change all other clock references to use nanosecond resolution accessorsPaolo Bonzini1-1/+1
This was done with: sed -i 's/qemu_get_clock\>/qemu_get_clock_ns/' \ $(git grep -l 'qemu_get_clock\>' ) sed -i 's/qemu_new_timer\>/qemu_new_timer_ns/' \ $(git grep -l 'qemu_new_timer\>' ) after checking that get_clock and new_timer never occur twice on the same line. There were no missed occurrences; however, even if there had been, they would have been caught by the compiler. There was exactly one false positive in qemu_run_timers: - current_time = qemu_get_clock (clock); + current_time = qemu_get_clock_ns (clock); which is of course not in this patch. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-02-25Fixing tap adapter for win32Pavel Dovgaluk1-1/+1
This fix allows connection of internal VLAN to the external TAP interface. If tap_win32_write function always returns 0, the TAP network interface in QEMU is disabled. Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-02-25Fixing network over sockets implementation for win32Pavel Dovgaluk1-1/+1
MSDN includes the following in WSAEALREADY error description for connect() function: "To preserve backward compatibility, this error is reported as WSAEINVAL to Winsock applications that link to either Winsock.dll or Wsock32.dll". So check of this error code was added to allow network connections through the sockets in Windows. Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-02-01vhost: force vhost off for non-MSI guestsmst@redhat.com1-2/+4
When MSI is off, each interrupt needs to be bounced through the io thread when it's set/cleared, so vhost-net causes more context switches and higher CPU utilization than userspace virtio which handles networking in the same thread. We'll need to fix this by adding level irq support in kvm irqfd, for now disable vhost-net in these configurations. Added a vhostforce flag to force vhost-net back on. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-02-01tap: safe sndbuf defaultMichael S. Tsirkin1-4/+9
With current sndbuf default value, a blocked target guest can prevent another guest from transmitting any packets. While current sndbuf value (1M) is reported to help some UDP based workloads, the default should be safe (0). Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-12-21Add support for OpenBSD to QEMU's tap driver.Brad1-2/+6
Signed-off-by: Brad Smith <brad@comstyle.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-17Fix warning on mingw32Blue Swirl1-1/+2
Avoid this warning like other uses of setsockopt: /src/qemu/net/socket.c: In function 'net_socket_mcast_create': /src/qemu/net/socket.c:210: warning: passing argument 4 of 'setsockopt' from incompatible pointer type Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-09net/sock: option to specify local addressMike Ryan1-13/+39
Add an option to specify the host IP to send multicast packets from, when using a multicast socket for networking. The option takes an IP address and sets the IP_MULTICAST_IF socket option, which causes the packets to use that IP's interface as an egress. This is useful if the host machine has several interfaces with several virtual networks across disparate interfaces. Signed-off-by: Mike Ryan <mikeryan@ISI.EDU> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-16tap: make set_offload a nop after netdev cleanupMichael S. Tsirkin1-1/+5
virtio-net expects set_offload to succeed after peer cleanup. Since we don't have an open fd anymore, make it so. Fixes warning about the failure of offload setting. Reported-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-16tap: clear vhost_net backend on cleanupMichael S. Tsirkin1-0/+1
Frontends calling tap_get_vhost_net get an invalid pointer after the peer backend has been deleted. Jason Wang <jasowang@redhat.com> reports this leading to a crash in ack_features when we remove the vhost-net bakend of a virtio nic. The fix is simply to clear the backend pointer. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-10-13Delete write only variablesBlue Swirl1-3/+2
Compiling with GCC 4.6.0 20100925 produced warnings like: /src/qemu/net/tap-win32.c: In function 'tap_win32_open': /src/qemu/net/tap-win32.c:582:12: error: variable 'hThread' set but not used [-Werror=unused-but-set-variable] Fix by removing the unused variables. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-10-03tap: Add stub for HaikuAndreas Färber1-0/+61
Adapted from AIX code. Signed-off-by: Andreas Färber <andreas.faerber@web.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-09-29tap: Remove double include of util.hAndreas Färber1-4/+0
If neither of __FreeBSD__, __FreeBSD_kernel__ and __DragonFly__ is defined, util.h is included from tap-bsd.c. Don't include it again if __OpenBSD__ is defined. Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Andreas Färber <andreas.faerber@web.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-09-07tap: add APIs for vnet header lengthMichael S. Tsirkin8-0/+92
Add APIs to control host header length. First user will be vhost-net. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-09-07tap: generalize code for different vnet header lenMichael S. Tsirkin2-14/+20
Make host vnet header length a structure field in preparation for using this support in linux kernel. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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