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2012-09-28iostatus: reorganize io error codePaolo Bonzini1-0/+6
Move the common part of IDE/SCSI/virtio error handling to the block layer. The new function bdrv_error_action subsumes all three of bdrv_emit_qmp_error_event, vm_stop, bdrv_iostatus_set_err. The same scheme will be used for errors in block jobs. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-08-15block: Enable qemu_open/close to work with fd setsCorey Bryant1-0/+20
When qemu_open is passed a filename of the "/dev/fdset/nnn" format (where nnn is the fdset ID), an fd with matching access mode flags will be searched for within the specified monitor fd set. If the fd is found, a dup of the fd will be returned from qemu_open. Signed-off-by: Corey Bryant <coreyb@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-08-09iscsi: Pick default initiator-name based on the name of the VMRonnie Sahlberg1-0/+5
This patch updates the iscsi layer to automatically pick a 'unique' initiator-name based on the name of the vm in case the user has not set an explicit iqn-name to use. Create a new function qemu_get_vm_name() that returns the name of the VM, if specified. This way we can thus create default names to use as the initiator name based on the guest session. If the VM is not named via the '-name' command line argument, the iscsi initiator-name used wiull simply be iqn.2008-11.org.linux-kvm If a name for the VM was specified with the '-name' option, iscsi will use a default initiatorname of iqn.2008-11.org.linux-kvm:<name> These names are just the default iscsi initiator name that qemu will generate/use only when the user has not set an explicit initiator name via the commandlines or config files. Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
2012-06-21qemu-log: cleanupBlue Swirl1-2/+0
Don't use global variables directly but via accessor functions. Rename globals. Convert macros to functions, add GCC format attributes. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-04-26main_loop_wait: block indefinitelyStefano Stabellini1-0/+4
- remove qemu_calculate_timeout; - explicitly size timeout to uint32_t; - introduce slirp_update_timeout; - pass NULL as timeout argument to select in case timeout is the maximum value; Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Paul Brook <paul@codesourcery.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-04-19qemu-tool: map vm_clock to rt_clockPaolo Bonzini1-2/+1
QED uses vm_clock timers so that images are not touched during and after migration. This however does not apply to qemu-io and qemu-img. Treat vm_clock as a synonym for rt_clock there, and enable it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29qemu-tool: revert cpu_get_clock() abort(3)Stefan Hajnoczi1-1/+1
Despite the fact that the qemu-tool environment has no guest running and vm_clock therefore does not make sense, there is code that gets the vm_clock time even in qemu-tool. Therefore, revert the abort(3) call and just return 0 like we used to. This unbreaks qemu-img/qemu-io with QED and Kevin has also expressed interest in this for qcow2. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-01main-loop: For tools, initialize timers as part of qemu_init_main_loop()Michael Roth1-1/+2
In some cases initializing the alarm timers can lead to non-negligable overhead from programs that link against qemu-tool.o. At least, setting a max-resolution WinMM alarm timer via mm_start_timer() (the current default for Windows) can increase the "tick rate" on Windows OSs and affect frequency scaling, and in the case of tools that run in guest OSs such has qemu-ga, the impact can be fairly dramatic (+20%/20% user/sys time on a core 2 processor was observed from an idle Windows XP guest). This patch doesn't address the issue directly (not sure what a good solution would be for Windows, or what other situations it might be noticeable), but it at least limits the scope of the issue to programs that "opt-in" to using the main-loop.c functions by only enabling alarm timers when qemu_init_main_loop() is called, which is already required to make use of those facilities, so existing users shouldn't be affected. 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>
2012-01-19qemu-tool: Fix mixup of int64 and int64_tAndreas Färber1-2/+2
Commit cbcfa0418f0c196afa765f5c9837b9344d1adcf3 (link the main loop and its dependencies into the tools) introduced stray usages of int64. Use int64_t instead. Signed-off-by: Andreas Färber <afaerber@suse.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-01-13prepare for future GPLv2+ relicensingPaolo Bonzini1-0/+2
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>
2011-12-22link the main loop and its dependencies into the toolsPaolo Bonzini1-19/+23
Using the main loop code from QEMU enables tools to operate fully asynchronously. Advantages include better Windows portability (for some definition of portability) over glib's. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-11-21qed: add migration blocker (v2)Anthony Liguori1-0/+9
Now when you try to migrate with qed, you get: (qemu) migrate tcp:localhost:1025 Block format 'qed' used by device 'ide0-hd0' does not support feature 'live migration' (qemu) Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-09-23core: remove qemu_service_ioFrediano Ziglio1-4/+0
qemu_service_io was mainly an alias to qemu_notify_event, currently used only by PPC for timer hack, so call qemu_notify_event directly. Signed-off-by: Frediano Ziglio <freddy77@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-20Use glib memory allocation and free functionsAnthony Liguori1-2/+2
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-05-18qemu-tool: Stub out qemu-timer functionsStefan Hajnoczi1-0/+25
Block drivers may use timers for flushing metadata to disk or reconnecting to a network drive. Stub out the following functions in qemu-tool.c: QEMUTimer *qemu_new_timer_ns(QEMUClock *clock, int scale, QEMUTimerCB *cb, void *opaque) void qemu_free_timer(QEMUTimer *ts) void qemu_del_timer(QEMUTimer *ts) void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time) int64_t qemu_get_clock_ns(QEMUClock *clock) They will result in timers never firing when linked against qemu-tool.o. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-04-15Remove unused sysemu.h include directivesBlue Swirl1-1/+0
Remove unused sysemu.h include directives to speed up build with the following patches. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-03-15tools: Use real async.c instead of stubsKevin Wolf1-43/+4
It's wrong to call BHs directly, even in tools. The only operations that schedule BHs are called in a loop that (indirectly) contains a call to qemu_bh_poll anyway, so we're not losing the scheduled BHs: Tools either use synchronous functions, which are guaranteed to have completed (including any BHs) when they return; or if they use asynchronous functions, they need to call qemu_aio_wait() or similar functions already today. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2010-10-30Move qemu_gettimeofday() to OS specific filesJes Sorensen1-0/+1
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-10-23qemu-timer: move commonly used timer code to qemu-timer-commonBlue Swirl1-7/+0
Move timer init functions to a new file, qemu-timer-common.c. Make other critical timer functions inlined to preserve performance in qemu-timer.c, also move muldiv64() (used by the inline functions) to qemu-timer.h. Adjust block/raw-posix.c and simpletrace.c to use get_clock() directly. Remove a similar/duplicate definition in qemu-tool.c. Adjust hw/omap_clk.c to include qemu-timer.h because muldiv64() is used there. After this change, tracing can be used also for user code and simpletrace on Win32. Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Acked-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-03-27error: Link qemu-img, qemu-nbd, qemu-io with qemu-error.oMarkus Armbruster1-34/+15
The location tracking interface is used by code shared with qemi-img, qemu-nbd and qemu-io, so it needs to be available there. Commit 827b0813 provides it in a rather hamfisted way: it adds a dummy implementation to qemu-tool.c. It's cleaner to provide the real thing, and put a few more dummy monitor functions into qemu-tool.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-19rename IOCanRWHandler to IOCanReadHandlerJuan Quintela1-1/+1
It was always only used for reads Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-03-16error: Infrastructure to track locations for error reportingMarkus Armbruster1-0/+24
New struct Location holds a location. So far, the only location is LOC_NONE, so this doesn't do anything useful yet. Passing the current location all over the place would be too cumbersome. Hide it away in static cur_loc instead, and provide accessors. Print it in error_report(). Store it in QError, and print it in qerror_print(). Store it in QemuOpt, for use by qemu_opts_foreach(). This makes error_report() do the right thing when it runs within qemu_opts_foreach(). We may still have to store it in other data structures holding user input for better error messages. Left for another day.
2010-03-16error: Replace qemu_error() by error_report()Markus Armbruster1-1/+1
error_report() terminates the message with a newline. Strip it it from its arguments. This fixes a few error messages lacking a newline: net_handle_fd_param()'s "No file descriptor named %s found", and tap_open()'s "vnet_hdr=1 requested, but no kernel support for IFF_VNET_HDR available" (all three versions). There's one place that passes arguments without newlines intentionally: load_vmstate(). Fix it up.
2010-03-16error: Move qemu_error & friends into their own headerMarkus Armbruster1-1/+1
2010-03-16tools: Remove unused cur_mon from qemu-tool.cMarkus Armbruster1-2/+0
2009-12-03QMP: Asynchronous events infrastructureLuiz Capitulino1-0/+4
Asynchronous events are generated with a call to monitor_protocol_event(). This function builds the right data-type and emit the event right away. The emitted data is always a JSON object and its format is as follows: { "event": json-string, "timestamp": { "seconds": json-number, "microseconds": json-number }, "data": json-value } This design is based on ideas by Amit Shah <amit.shah@redhat.com>. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-09Added imlpementation for qemu_error for non-qemu executablesNaphtali Sprei1-0/+9
Now qemu_error can be called also from shared files, e.g. block.c. Signed-off-by: Naphtali Sprei <nsprei@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Introduce contexts for asynchronous callbacksKevin Wolf1-0/+13
Add the possibility to use AIO and BHs without allowing foreign callbacks to be run. Basically, you put your own AIOs and BHs in a separate context. For details see the comments in the source. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-20Fix most warnings (errors with -Werror) when debugging is enabledBlue Swirl1-0/+3
I used the following command to enable debugging: perl -p -i -e 's/^\/\/#define DEBUG/#define DEBUG/g' * */* */*/* Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-03-05monitor: Rework API (Jan Kiszka)aliguori1-3/+5
Refactor the monitor API and prepare it for decoupled terminals: term_print functions are renamed to monitor_* and all monitor services gain a new parameter (mon) that will once refer to the monitor instance the output is supposed to appear on. However, the argument remains unused for now. All monitor command callbacks are also extended by a mon parameter so that command handlers are able to pass an appropriate reference to monitor output services. For the case that monitor outputs so far happen without clearly identifiable context, the global variable cur_mon is introduced that shall once provide a pointer either to the current active monitor (while processing commands) or to the default one. On the mid or long term, those use case will be obsoleted so that this variable can be removed again. Due to the broad usage of the monitor interface, this patch mostly deals with converting users of the monitor API. A few of them are already extended to pass 'mon' from the command handler further down to internal functions that invoke monitor_printf. At this chance, monitor-related prototypes are moved from console.h to a new monitor.h. The same is done for the readline API. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6711 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05toplevel: remove error handling from qemu_malloc() callers (Avi Kivity)aliguori1-4/+2
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6531 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-30Fix warning from sparse (wrong declaration)aurel321-1/+1
Fix data type (this fixes a warning from sparse) Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5834 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-29Use qemu_gettimeofday.pbrook1-1/+1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5571 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-08Fix IO performance regression in sparcaliguori1-0/+4
Replace signalfd with signal handler/pipe. There is no way to interrupt the CPU execution loop when a file descriptor becomes readable. This results in a large performance regression in sparc emulation during bootup. This patch switches us to signal handler/pipe which was originally suggested by Ian Jackson. The signal handler lets us interrupt the CPU emulation loop while the write to a pipe lets us avoid the select/signal race condition. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5451 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-15Use common objects for qemu-img and qemu-nbdaliguori1-0/+83
Right now, we sprinkle #if defined(QEMU_IMG) && defined(QEMU_NBD) all over the code. It's ugly and causes us to have to build multiple object files for linking against qemu and the tools. This patch introduces a new file, qemu-tool.c which contains enough for qemu-img, qemu-nbd, and QEMU to all share the same objects. This also required getting qemu-nbd to be a bit more Windows friendly. I also changed the Windows block-raw to use normal IO instead of overlapping IO since we don't actually do AIO yet on Windows. I changed the various #if 0's to #if WIN32_AIO to make it easier for someone to eventually fix AIO on Windows. After this patch, there are no longer any #ifdef's related to qemu-img and qemu-nbd. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5226 c046a42c-6fe2-441c-8c8c-71466251a162
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