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2014-03-03qga: Remove unneeded include fileStefan Weil
This file does not depend on windows.h. Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-02-23qemu-ga: isa-serial support on WindowsMiki Mishael
Add support for isa-serial method for qemu-ga on Windows, Added -p command line parameter for serial port name specification, e.g. "-p COM15". Signed-off-by: Miki Mishael <mmishael@redhat.com> Signed-off-by: Dmitry Fleytman <dfleytma@redhat.com> *added default isa-serial path to help output Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-02-23qga: Fix memory allocation pastoMarkus Armbruster
qmp_guest_file_seek() allocates memory for a GuestFileRead object instead of the GuestFileSeek object it actually uses. Harmless, because the GuestFileRead is slightly larger. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-02-23qga: Don't require 'time' argument in guest-set-time commandMichal Privoznik
As the description to the guest-set-time states, the command is there to ease time synchronization after resume. If guest was suspended for longer period of time, its system time can go off so badly, that even NTP refuses to set it. That's why the command was invented: to give users chance to set the time (not necessarily 100% correct). However, there's is no real need for us to require users to pass an arbitrary time. Especially if we can read the correct value from RTC (boiling down to reading host's time). Hence this commit enables logic: guest-set-time() == guest-set-time($now_from_rtc) Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-02-23qga: vss-win32: Fix interference with snapshot deletion by other VSS requestTomoki Sekiyama
When a VSS requester such as vshadow.exe or diskshadow.exe requests to delete snapshots, qemu-ga VSS provider's DeleteSnapshots() is also called and returns E_NOTIMPL, that makes the deletion fail. To avoid this issue, return S_OK and set values that represent no snapshots are deleted by qemu-ga VSS provider. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Reviewed-by: Gal Hammer <ghammer@redhat.com> Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-02-23qga: vss-win32: Fix interference with snapshot creation by other VSS requestersTomoki Sekiyama
When a VSS requester such as vshadow.exe or diskshadow.exe requests to create disk snapshots, Windows may choose qemu-ga VSS provider if it is only provider registered on the system. However, because it provides only a function to freeze the filesystem, the snapshotting fails. This patch adds a check into CQGAVssProvider::IsVolumeSupported() to reject the request from other VSS requesters, so that the other provider is chosen. The check of requester is done by confirming event channels between qemu-ga's requester and provider established. To ensure that the events are initialized when CQGAVssProvider::IsVolumeSupported() is called, it moves the initialization earlier. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Reviewed-by: Gal Hammer <ghammer@redhat.com> Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-02-23qga: vss-win32: Use NULL as an invalid pointer for OpenEvent and CreateEventTomoki Sekiyama
OpenEvent and CreateEvent WinAPI return NULL when failed to open/create events handles, instead of INVALID_HANDLE_VALUE (although their return types are HANDLE). This replaces INVALID_HANDLE_VALUE related to event handles with NULL. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Reviewed-by: Gal Hammer <ghammer@redhat.com> Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-02-17Use error_is_set() only when necessaryMarkus Armbruster
error_is_set(&var) is the same as var != NULL, but it takes whole-program analysis to figure that out. Unnecessarily hard for optimizers, static checkers, and human readers. Dumb it down to obvious. Gets rid of several dozen Coverity false positives. Note that the obvious form is already used in many places. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2013-11-25qga: Fix two format strings for MinGWStefan Weil
Both code locations cause a compiler warning. Using "%s" instead of "%lu" would result in a program crash if the wrong code were executed. Signed-off-by: Stefan Weil <sw@weilnetz.de> Message-id: 1385409257-2522-1-git-send-email-sw@weilnetz.de Signed-off-by: Anthony Liguori <aliguori@amazon.com>
2013-11-25Merge remote-tracking branch 'bonzini/tags/for-anthony' into stagingAnthony Liguori
Here are a bunch of 1.7-tagged patches that I was afraid were getting forgotten or that did not have a clear maintainer responsible for making a pull request. # gpg: Signature made Thu 21 Nov 2013 08:40:59 AM PST using RSA key ID 9B4D86F2 # gpg: Can't check signature: public key not found # By Peter Maydell (3) and others # Via Paolo Bonzini * bonzini/tags/for-anthony: qga: Fix compiler warnings (missing format attribute, wrong format strings) mips jazz: do not raise data bus exception when accessing invalid addresses target-i386: yield to another VCPU on PAUSE rng-egd: offset the point when repeatedly read from the buffer rng-egd: remove redundant free target-i386: Fix build by providing stub kvm_arch_get_supported_cpuid() vfio-pci: Fix multifunction=on atomic.h: Fix build with clang pc: get rid of builtin pvpanic for "-M pc-1.5" configure: Explicitly set ARFLAGS so we can build with GNU Make 4.0 sun4m: Add FCode ROM for TCX framebuffer Message-id: 1385052578-32352-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@amazon.com>
2013-11-22qemu-ga: vss-win32: Install VSS provider COM+ application serviceTomoki Sekiyama
Currently, qemu-ga for Windows fails to execute guset-fsfreeze-freeze when no user is logging in to Windows, with an error message: {"error":{"class":"GenericError", "desc":"failed to add C:\\ to snapshotset: (error: 8004230f)"}} To enable guest-fsfreeze-freeze/thaw without logging in users, this installs a service to execute qemu-ga VSS provider COM+ application that has full access privileges to the local system. The service will automatically be removed when the COM+ application is deregistered. This patch replaces ICOMAdminCatalog interface with ICOMAdminCatalog2 interface that contains CreateServiceForApplication() method in addition. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Reviewed-by: Gal Hammer <ghammer@redhat.com> Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com> Tested-by: Yan Vugenfirer <yvugenfi@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-11-21qga: Fix compiler warnings (missing format attribute, wrong format strings)Stefan Weil
gcc 4.8.2 reports this warning when extra warnings are enabled (-Wextra): CC qga/commands.o qga/commands.c: In function ‘slog’: qga/commands.c:28:5: error: function might be possible candidate for ‘gnu_printf’ format attribute [-Werror=suggest-attribute=format] g_logv("syslog", G_LOG_LEVEL_INFO, fmt, ap); ^ gcc 4.8.2 reports this warning when slog is declared with the gnu_printf format attribute: qga/commands-posix.c: In function ‘qmp_guest_file_open’: qga/commands-posix.c:404:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘int64_t’ [-Wformat=] slog("guest-file-open, handle: %d", handle); ^ On 32 bit hosts there are three more warnings which are also fixed here. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-11-16qga: Fix shutdown command of guest agent to work with SysVwhitearchey
For now guest agent uses following command to shutdown system: shutdown -P +0 "blabla" but this syntax works only with shutdown command from systemd or upstart, because SysV shutdown requires -h switch. Following patch changes the command so it works with systemd, upstart and SysV With upstart/systemd qga use one of thee commands, depending on 'mode' parameter: shutdown -P +0 "..." shutdown -H +0 "..." shutdown -r +0 "..." SysV equivalents for these are: shutdown -h -P +0 "..." shutdown -h -H +0 "..." shutdown -h -r +0 "..." and these retain their meaning with upstart/systemd. According to FreeBSD manpages, shutdown does not accept -P and -H options. Commands should be: shutdown -p +0 "..." shutdown -h +0 "..." shutdown -r +0 "..." shutdown in Solaris does not accept any of -hHpPr and does not accept time in "+0" format Signed-off-by: Michael Avdienko <whitearchey@gmail.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-11-13qga: Fix compilation for old versions of MinGWStefan Weil
While MinGW-w64 can compile the qga code, MinGW from Debian lenny (gcc-mingw32 4.4.2-3) shows these errors: In file included from qga/vss-win32.c:17: qga/vss-win32/requester.h:31: error: expected »=«, »,«, »;«, »asm« or »__attribute__« before »requester_init« qga/vss-win32/requester.h:32: error: expected »=«, »,«, »;«, »asm« or »__attribute__« before »requester_deinit« The macro STDAPI is unknown, so add the missing include file which defines it. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-10-10qemu-ga: Extend 'guest-info' command to expose flag 'success-response'Mark Wu
Now we have several qemu-ga commands not returning response on success. It has been documented in qga/qapi-schema.json already. This patch exposes the 'success-response' flag by extending 'guest-info' command. With this change, the clients can handle the command response more flexibly. Signed-off-by: Mark Wu <wudxw@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> *fixed up commit subject Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-10-10qemu-ga: Add interface to traverse the qmp command list by QmpCommandMark Wu
In the original code, qmp_get_command_list is used to construct a list of all commands' name. To get the information of all qga commands, it traverses the name list and search the command info with its name. So it can cause O(n^2) in the number of commands. This patch adds an interface to traverse the qmp command list by QmpCommand to replace qmp_get_command_list. It can decrease the complexity from O(n^2) to O(n). Signed-off-by: Mark Wu <wudxw@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> *fix up commit subject Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-10-10qemu-ga: execute fsfreeze-freeze in reverse order of mountsTomoki Sekiyama
Currently, fsfreeze-freeze may cause deadlock if a guest has loopback mounts of image files in its disk; e.g.: # mount | grep ^/ /dev/vda1 / type ext4 (rw,noatime,seclabel,data=ordered) /tmp/disk.img on /mnt type ext4 (rw,relatime,seclabel) To avoid the deadlock, this freezes filesystems in reverse order of mounts. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Reviewed-by: Eric Blake <eblake@redhat.com> *fix up commit msg Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-09-09qemu-ga: Install Windows VSS provider on `qemu-ga -s install'Tomoki Sekiyama
Register QGA VSS provider library into Windows when qemu-ga is installed as Windows service ('-s install' option). It is deregistered when the service is uninstalled ('-s uninstall' option). Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-09-09qemu-ga: Call Windows VSS requester in fsfreeze command handlerTomoki Sekiyama
Support guest-fsfreeze-freeze and guest-fsfreeze-thaw commands for Windows guests. When fsfreeze command is issued, it calls the VSS requester to freeze filesystems and applications. On thaw command, it again tells the VSS requester to thaw them. This also adds calling of initialize functions for the VSS requester. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-09-09qemu-ga: Add Windows VSS provider and requester as DLLTomoki Sekiyama
Adds VSS provider and requester as a qga-vss.dll, which is loaded by Windows VSS service as well as by qemu-ga. "provider.cpp" implements a basic stub of a software VSS provider. Currently, this module only relays a frozen event from VSS service to the agent, and thaw event from the agent to VSS service, to block VSS process to keep the system frozen while snapshots are taken at the host. To register the provider to the guest system as COM+ application, the type library (.tlb) for qga-vss.dll is required. To build it from COM IDL (.idl), VisualC++, MIDL and stdole2.tlb in Windows SDK are required. This patch also adds pre-compiled .tlb file in the repository in order to enable cross-compile qemu-ga.exe for Windows with VSS support. "requester.cpp" provides the VSS requester to kick the VSS snapshot process. Qemu-ga.exe works without the DLL, although fsfreeze features are disabled. These functions are only supported in Windows 2003 or later. In older systems, fsfreeze features are disabled. In several versions of Windows which don't support attribute VSS_VOLSNAP_ATTR_NO_AUTORECOVERY, DoSnapshotSet fails with error VSS_E_OBJECT_NOT_FOUND. In this patch, we just ignore this error. To solve this fundamentally, we need a framework to handle mount writable snapshot on guests, which is required by VSS auto-recovery feature (cleanup phase after a snapshot is taken). Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-07-25qga: escape cmdline args when registering win32 service (CVE-2013-2231)Laszlo Ersek
Reported-by: Lev Veyde <lveyde@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-07-25ga_install_service(): nest error paths more idiomaticallyLaszlo Ersek
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-07-25qga/service-win32.c: diagnostic output should go to stderrLaszlo Ersek
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-05-30qga: save state directory in ga_install_service()Laszlo Ersek
If the user selects a non-default state directory at service installation time, we should remember it in the registered service. Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-05-30qga: remove undefined behavior in ga_install_service()Laszlo Ersek
We shouldn't snprintf() from a buffer to the same buffer. Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-05-30qga: create state directory on win32Laszlo Ersek
On Win32 the local state directory is application specific and users might expect qemu-ga to create it automatically. Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-05-30qga: determine default state dir and pidfile dynamicallyLaszlo Ersek
No effective change on POSIX, but on Win32 the defaults come from the environment / session. Since commit 39097daf ("qemu-ga: use key-value store to avoid recycling fd handles after restart") we've relied on the state directory for the fd handles' key-value store. Even though we don't support the guest-file-* commands on win32 yet, the key-value store is written, and it's the first use of the state directory on win32. We should have a sensible default for its location. Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-05-17Merge remote-tracking branch 'mdroth/qga-pull-2013-05-13' into stagingAnthony Liguori
* mdroth/qga-pull-2013-05-13: qga: unlink just created guest-file if fchmod() or fdopen() fails on it qga: distinguish binary modes in "guest_file_open_modes" map Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13qga: unlink just created guest-file if fchmod() or fdopen() fails on itLaszlo Ersek
We shouldn't allow guest filesystem pollution on error paths. Suggested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-05-13qga: distinguish binary modes in "guest_file_open_modes" mapLaszlo Ersek
In Windows guests this may make a difference. Since the original patch (commit c689b4f1) sought to be pedantic and to consider theoretical corner cases of portability, we should fix it up where it failed to come through in that pursuit. Suggested-by: Eric Blake <eblake@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-05-12remove double semicolonsDong Xu Wang
Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-05-07qga: set umask 0077 when daemonizing (CVE-2013-2007)Laszlo Ersek
The qemu guest agent creates a bunch of files with insecure permissions when started in daemon mode. For example: -rw-rw-rw- 1 root root /var/log/qemu-ga.log -rw-rw-rw- 1 root root /var/run/qga.state -rw-rw-rw- 1 root root /var/log/qga-fsfreeze-hook.log In addition, at least all files created with the "guest-file-open" QMP command, and all files created with shell output redirection (or otherwise) by utilities invoked by the fsfreeze hook script are affected. For now mask all file mode bits for "group" and "others" in become_daemon(). Temporarily, for compatibility reasons, stick with the 0666 file-mode in case of files newly created by the "guest-file-open" QMP call. Do so without changing the umask temporarily. Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-02qemu-ga: ga_get_fd_handle(): abort if fd_counter overflowsLuiz Capitulino
Today we reset fd_counter if it wraps, but it's better to abort() instead, as fd_counter should never reach INT64_MAX. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> *fixed typo: s/resonable/reasonable/ Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-04-02qga schema: document generic QERR_UNSUPPORTEDLaszlo Ersek
Part of the wording was shamelessly stolen from Michael Roth's email. Suggested-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-04-02qga schema: mark optional GuestLogicalProcessor.can-offline with #optionalLaszlo Ersek
Suggested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-04-02qga: add windows implementation for guest-set-timeLei Li
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-04-02qga: add windows implementation for guest-get-timeLei Li
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-22Fix typos and misspellingsPeter Maydell
Fix various typos and misspellings. The bulk of these were found with codespell. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-15qga/main.c: Don't use g_key_file_get/set_int64Peter Crosthwaite
These functions don't exist until glib version 2.26. QEMU is currently only mandating glib 2.12. This patch replaces the functions with g_key_file_get/set_integer. Unbreaks the build on Ubuntu 10.04 and RHEL 5.6. Regression was introduced by 39097daf15c42243742667607d2cad2c9dc4f764 Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 1363323879-682-1-git-send-email-peter.crosthwaite@xilinx.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-11qga: implement qmp_guest_set_vcpus() for Linux with sysfsLaszlo Ersek
Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qga: implement qmp_guest_get_vcpus() for Linux with sysfsLaszlo Ersek
Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qga: introduce guest-get-vcpus / guest-set-vcpus with stubsLaszlo Ersek
Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qga: add guest-set-time commandLei Li
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> *added stub for w32 Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qga: add guest-get-time commandLei Li
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> *added stub for w32 Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qemu-ga: use key-value store to avoid recycling fd handles after restartMichael Roth
Hosts hold on to handles provided by guest-file-open for periods that can span beyond the life of the qemu-ga process that issued them. Since these are issued starting from 0 on every restart, we run the risk of issuing duplicate handles after restarts/reboots. As a result, users with a stale copy of these handles may end up reading/writing corrupted data due to their existing handles effectively being re-assigned to an unexpected file or offset. We unfortunately do not issue handles as strings, but as integers, so a solution such as using UUIDs can't be implemented without introducing a new interface. As a workaround, we fix this by implementing a persistent key-value store that will be used to track the value of the last handle that was issued across restarts/reboots to avoid issuing duplicates. The store is automatically written to the same directory we currently set via --statedir to track fsfreeze state, and so should be applicable for stable releases where this flag is supported. A follow-up can use this same store for handling fsfreeze state, but that change is cosmetic and left out for now. Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Cc: qemu-stable@nongnu.org * fixed guest_file_handle_add() return value from uint64_t to int64_t
2013-03-11qemu-ga: make guest-sync-delimited available during fsfreezeMichael Roth
We currently maintain a whitelist of commands that are safe during fsfreeze. During fsfreeze, we disable all commands that aren't part of that whitelist. guest-sync-delimited meets the criteria for being whitelisted, and is also required for qemu-ga clients that rely on guest-sync-delimited for re-syncing the channel after a timeout. Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Cc: qemu-stable@nongnu.org Reviewed-by: Eric Blake <eblake@redhat.com>
2013-03-11qemu-ga: fix confusing GAChannelMethod comparisonStefan Hajnoczi
In commit 7868e26e5930f49ca942311885776b938dcf3b77 ("qemu-ga: add initial win32 support") support was added for qemu-ga on Windows using virtio-serial. Other channel methods (ISA serial and UNIX domain socket) are not supported on Windows. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qga: cast to int for DWORD typeLei Li
This patch fixes a compiler warning when cross-build: qga/service-win32.c: In function 'printf_win_error': qga/service-win32.c:32:5: warning: format '%d' expects argument of type 'int', but argument 3 has type 'DWORD' [-Wformat] Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-30qemu-ga: Fix unchecked strdup() by converting to g_strdup()Markus Armbruster
I figure it's freed somewhere deep down in QAPI, with g_free(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-28qemu-ga: Plug leaks on qmp_guest_network_get_interfaces() error pathsMarkus Armbruster
Spotted by Coverity. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-27 19:33:38 +0000