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2016-01-15qemu-char: add logfile facility to all chardev backendsDaniel P. Berrange
Typically a UNIX guest OS will log boot messages to a serial port in addition to any graphical console. An admin user may also wish to use the serial port for an interactive console. A virtualization management system may wish to collect system boot messages by logging the serial port, but also wish to allow admins interactive access. Currently providing such a feature forces the mgmt app to either provide 2 separate serial ports, one for logging boot messages and one for interactive console login, or to proxy all output via a separate service that can multiplex the two needs onto one serial port. While both are valid approaches, they each have their own downsides. The former causes confusion and extra setup work for VM admins creating disk images. The latter places an extra burden to re-implement much of the QEMU chardev backends logic in libvirt or even higher level mgmt apps and adds extra hops in the data transfer path. A simpler approach that is satisfactory for many use cases is to allow the QEMU chardev backends to have a "logfile" property associated with them. $QEMU -chardev socket,host=localhost,port=9000,\ server=on,nowait,id-charserial0,\ logfile=/var/log/libvirt/qemu/test-serial0.log -device isa-serial,chardev=charserial0,id=serial0 This patch introduces a 'ChardevCommon' struct which is setup as a base for all the ChardevBackend types. Ideally this would be registered directly as a base against ChardevBackend, rather than each type, but the QAPI generator doesn't allow that since the ChardevBackend is a non-discriminated union. The ChardevCommon struct provides the optional 'logfile' parameter, as well as 'logappend' which controls whether QEMU truncates or appends (default truncate). Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1452516281-27519-1-git-send-email-berrange@redhat.com> [Call qemu_chr_parse_common if cd->parse is NULL. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-10-19qemu-char: convert braille backend to data-driven creationPaolo Bonzini
Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-10-14qemu-char: add create to register_char_driverPaolo Bonzini
Having creation as a member of the CharDriver struct removes the need to export functions for qemu-char.c's usage. After the conversion, chardev backends implemented outside qemu-char.c will not need a stub creation function anymore. Ultimately all drivers will be converted. For now, support the case where cd->create == NULL. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-11baum: Fix build with debugging enabledSamuel Thibault
cur and buf are pointers, so the difference is a ptrdiff_t Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-09-16qemu-char: Rename register_char_driver_qapi() to register_char_driver()Peter Maydell
Now we have removed the legacy register_char_driver() we can rename register_char_driver_qapi() to the more obvious and shorter name. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1409653457-27863-6-git-send-email-peter.maydell@linaro.org
2014-06-23qemu-char: introduce qemu_chr_allocPaolo Bonzini
The next patch will modify this function to initialize state that is common to all backends. Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-03-24backends/baum.c: Fix compilation when SDL is not available.Richard W.M. Jones
backends/baum.c: In function ‘chr_baum_init’: backends/baum.c:569:64: error: missing binary operator before token "(" #if defined(CONFIG_SDL) && SDL_COMPILEDVERSION < SDL_VERSIONNUM(2, 0, 0) ^ backends/baum.c:598:64: error: missing binary operator before token "(" #if defined(CONFIG_SDL) && SDL_COMPILEDVERSION < SDL_VERSIONNUM(2, 0, 0) Signed-off-by: Richard W.M. Jones <rjones@redhat.com> Message-id: 1395437377-5779-1-git-send-email-rjones@redhat.com Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-03-05ui/sdl2 : initial port to SDL 2.0 (v2.0)Dave Airlie
I've ported the SDL1.2 code over, and rewritten it to use the SDL2 interface. The biggest changes were in the input handling, where SDL2 has done a major overhaul, and I've had to include a generated translation file to get from SDL2 codes back to qemu compatible ones. I'm still not sure how the keyboard layout code works in qemu, so there may be further work if someone can point me a test case that works with SDL1.2 and doesn't with SDL2. Some SDL env vars we used to set are no longer used by SDL2, Windows, OSX support is untested, I don't think we can link to SDL1.2 and SDL2 at the same time, so I felt using --with-sdlabi=2.0 to select the new code should be fine, like how gtk does it. v1.1: fix keys in text console v1.2: fix shutdown, cleanups a bit of code, support ARGB cursor v2.0: merge the SDL multihead patch into this, g_new the number of consoles needed, wrap DCL inside per-console structure. Signed-off-by: Dave Airlie <airlied@redhat.com> Fixes & improvements by kraxel: * baum build fix * remove text console logic * adapt to new input core * codestyle fixups Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-08-22aio / timers: Switch entire codebase to the new timer APIAlex Bligh
This is an autogenerated patch using scripts/switch-timer-api. Switch the entire code base to using the new timer API. Note this patch may introduce some line length issues. Signed-off-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-08-22aio / timers: Rename qemu_timer_* functionsAlex Bligh
Rename four functions in preparation for new API. Rename qemu_timer_expired to timer_expired Rename qemu_timer_expire_time_ns to timer_expire_time_ns Rename qemu_timer_pending to timer_pending Rename qemu_timer_expired_ns to timer_expired_ns Signed-off-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-06-10qemu-char: don't issue CHR_EVENT_OPEN in a BHMichael Roth
When CHR_EVENT_OPENED was initially added, it was CHR_EVENT_RESET, and it was issued as a bottom-half: 86e94dea5b740dad65446c857f6959eae43e0ba6 Which we basically used to print out a greeting/prompt for the monitor. AFAICT the only reason this was ever done in a BH was because in some cases we'd modify the chr_write handler for a new chardev backend *after* the site where we issued the reset (see: 86e94d:qemu_chr_open_stdio()) At some point this event was renamed to CHR_EVENT_OPENED, and we've maintained the use of this BH ever since. However, due to 9f939df955a4152aad69a19a77e0898631bb2c18, we schedule the BH via g_idle_add(), which is causing events to sometimes be delivered after we've already begun processing data from backends, leading to: known bugs: QMP: session negotation resets with OPENED event, in some cases this is causing new sessions to get sporadically reset potential bugs: hw/usb/redirect.c: can_read handler checks for dev->parser != NULL, which may be true if CLOSED BH has not been executed yet. In the past, OPENED quiesced outstanding CLOSED events prior to us reading client data. If it's delayed, our check may allow reads to occur even though we haven't processed the OPENED event yet, and when we do finally get the OPENED event, our state may get reset. qtest.c: can begin session before OPENED event is processed, leading to a spurious reset of the system and irq_levels gdbstub.c: may start a gdb session prior to the machine being paused To fix these, let's just drop the BH. Since the initial reasoning for using it still applies to an extent, work around that by deferring the delivery of CHR_EVENT_OPENED until after the chardevs have been fully initialized, toward the end of qmp_chardev_add() (or some cases, qemu_chr_new_from_opts()). This defers delivery long enough that we can be assured a CharDriverState is fully initialized before CHR_EVENT_OPENED is sent. Also, rather than requiring each chardev to do an explicit open, do it automatically, and allow the small few who don't desire such behavior to suppress the OPENED-on-init behavior by setting a 'explicit_be_open' flag. We additionally add missing OPENED events for stdio backends on w32, which were previously not being issued, causing us to not recieve the banner and initial prompts for qmp/hmp. Reported-by: Stefan Priebe <s.priebe@profihost.ag> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Message-id: 1370636393-21044-1-git-send-email-mdroth@linux.vnet.ibm.com Cc: qemu-stable@nongnu.org Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-15sysemu: avoid proliferation of include/ subdirectoriesPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-27qemu-char: Rename qemu_chr_generic_open to qemu_chr_be_generic_openHans de Goede
To better reflect that it is for handling a backend being opened. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-3-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-13chardev: add braille support to qapiGerd Hoffmann
This patch adds 'braille' support to qapi and also switches over the braille chardev initialization to the new qapi code path. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-03-10Merge remote-tracking branch 'bonzini/hw-dirs' into stagingAnthony Liguori
* bonzini/hw-dirs: sh: move files referencing CPU to hw/sh4/ ppc: move more files to hw/ppc ppc: move files referencing CPU to hw/ppc/ m68k: move files referencing CPU to hw/m68k/ i386: move files referencing CPU to hw/i386/ arm: move files referencing CPU to hw/arm/ hw: move boards and other isolated files to hw/ARCH ppc: express FDT dependency of pSeries and e500 boards via default-configs/ build: always link device_tree.o into emulators if libfdt available hw: include hw header files with full paths ppc: do not use ../ in include files vt82c686: vt82c686 is not a PCI host bridge virtio-9p: remove PCI dependencies from hw/9pfs/ virtio-9p: use CONFIG_VIRTFS, not CONFIG_LINUX hw: move device-hotplug.o to toplevel, compile it once hw: move qdev-monitor.o to toplevel directory hw: move fifo.[ch] to libqemuutil hw: move char backends to backends/ Conflicts: backends/baum.c backends/msmouse.c hw/a15mpcore.c hw/arm/Makefile.objs hw/arm/pic_cpu.c hw/dataplane/event-poll.c hw/dataplane/virtio-blk.c include/char/baum.h include/char/msmouse.h qemu-char.c vl.c Resolve conflicts caused by header movements. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-01hw: move char backends to backends/Paolo Bonzini
Braille and msmouse support is in hw/, but it is not hardware. Move it to the backends/ directory. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>