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* qom: Swap 'name' next to visitor in ObjectPropertyAccessorEric Blake2016-02-081-16/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Similar to the previous patch, it's nice to have all functions in the tree that involve a visitor and a name for conversion to or from QAPI to consistently stick the 'name' parameter next to the Visitor parameter. Done by manually changing include/qom/object.h and qom/object.c, then running this Coccinelle script and touching up the fallout (Coccinelle insisted on adding some trailing whitespace). @ rule1 @ identifier fn; typedef Object, Visitor, Error; identifier obj, v, opaque, name, errp; @@ void fn - (Object *obj, Visitor *v, void *opaque, const char *name, + (Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { ... } @@ identifier rule1.fn; expression obj, v, opaque, name, errp; @@ fn(obj, v, - opaque, name, + name, opaque, errp) Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <1454075341-13658-20-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: Swap visit_* arguments for consistent 'name' placementEric Blake2016-02-081-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | JSON uses "name":value, but many of our visitor interfaces were called with visit_type_FOO(v, &value, name, errp). This can be a bit confusing to have to mentally swap the parameter order to match JSON order. It's particularly bad for visit_start_struct(), where the 'name' parameter is smack in the middle of the otherwise-related group of 'obj, kind, size' parameters! It's time to do a global swap of the parameter ordering, so that the 'name' parameter is always immediately after the Visitor argument. Additional reason in favor of the swap: the existing include/qjson.h prefers listing 'name' first in json_prop_*(), and I have plans to unify that file with the qapi visitors; listing 'name' first in qapi will minimize churn to the (admittedly few) qjson.h clients. Later patches will then fix docs, object.h, visitor-impl.h, and those clients to match. Done by first patching scripts/qapi*.py by hand to make generated files do what I want, then by running the following Coccinelle script to affect the rest of the code base: $ spatch --sp-file script `git grep -l '\bvisit_' -- '**/*.[ch]'` I then had to apply some touchups (Coccinelle insisted on TAB indentation in visitor.h, and botched the signature of visit_type_enum() by rewriting 'const char *const strings[]' to the syntactically invalid 'const char*const[] strings'). The movement of parameters is sufficient to provoke compiler errors if any callers were missed. // Part 1: Swap declaration order @@ type TV, TErr, TObj, T1, T2; identifier OBJ, ARG1, ARG2; @@ void visit_start_struct -(TV v, TObj OBJ, T1 ARG1, const char *name, T2 ARG2, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp) { ... } @@ type bool, TV, T1; identifier ARG1; @@ bool visit_optional -(TV v, T1 ARG1, const char *name) +(TV v, const char *name, T1 ARG1) { ... } @@ type TV, TErr, TObj, T1; identifier OBJ, ARG1; @@ void visit_get_next_type -(TV v, TObj OBJ, T1 ARG1, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, TErr errp) { ... } @@ type TV, TErr, TObj, T1, T2; identifier OBJ, ARG1, ARG2; @@ void visit_type_enum -(TV v, TObj OBJ, T1 ARG1, T2 ARG2, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp) { ... } @@ type TV, TErr, TObj; identifier OBJ; identifier VISIT_TYPE =~ "^visit_type_"; @@ void VISIT_TYPE -(TV v, TObj OBJ, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, TErr errp) { ... } // Part 2: swap caller order @@ expression V, NAME, OBJ, ARG1, ARG2, ERR; identifier VISIT_TYPE =~ "^visit_type_"; @@ ( -visit_start_struct(V, OBJ, ARG1, NAME, ARG2, ERR) +visit_start_struct(V, NAME, OBJ, ARG1, ARG2, ERR) | -visit_optional(V, ARG1, NAME) +visit_optional(V, NAME, ARG1) | -visit_get_next_type(V, OBJ, ARG1, NAME, ERR) +visit_get_next_type(V, NAME, OBJ, ARG1, ERR) | -visit_type_enum(V, OBJ, ARG1, ARG2, NAME, ERR) +visit_type_enum(V, NAME, OBJ, ARG1, ARG2, ERR) | -VISIT_TYPE(V, OBJ, NAME, ERR) +VISIT_TYPE(V, NAME, OBJ, ERR) ) Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <1454075341-13658-19-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* hw/core: Clean up includesPeter Maydell2016-01-291-0/+1
| | | | | | | | | | Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-37-git-send-email-peter.maydell@linaro.org
* hw: Inline the qdev_prop_set_drive_nofail() wrapperMarkus Armbruster2016-01-131-6/+0
| | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1449764955-10741-3-git-send-email-armbru@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
* Use error_fatal to simplify obvious fatal errorsMarkus Armbruster2016-01-131-7/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Done with this Coccinelle semantic patch: @@ type T; identifier FUN, RET; expression list ARGS; expression ERR, EC; @@ ( - T RET = FUN(ARGS, &ERR); + T RET = FUN(ARGS, &error_fatal); | - RET = FUN(ARGS, &ERR); + RET = FUN(ARGS, &error_fatal); | - FUN(ARGS, &ERR); + FUN(ARGS, &error_fatal); ) - if (ERR != NULL) { - error_report_err(ERR); - exit(EC); - } This is actually a more elegant version of my initial semantic patch by courtesy of Eduardo. It leaves dead Error * variables behind, cleaned up manually. Cc: qemu-arm@nongnu.org Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
* qdev-properties-system: Improve error message for drive assignment conflictPeter Maydell2015-06-261-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the user forgot if=none on their drive specification they're likely to get an error message because the drive is assigned once automatically by QEMU and once by the manual id=/drive= user command line specification. Improve the error message produced in this case to explicitly guide the user towards if=none. We rephrase the "drive conflict but not for an if=something" error as well to keep the wording in line. The two cases that change are: (1) Drive specified as to be auto-connected and also manually connected (and the board does handle this if= type): qemu-system-x86_64 -nodefaults -display none \ -drive if=scsi,file=tmp.qcow2,id=foo -device ide-hd,drive=foo Previously: qemu-system-x86_64: -device ide-hd,drive=foo: Property 'ide-hd.drive' can't take value 'foo', it's in use Now: qemu-system-x86_64: -device ide-hd,drive=foo: Drive 'foo' is already in use because it has been automatically connected to another device (did you need 'if=none' in the drive options?) (2) Drive specified to be manually connected in two different ways: qemu-system-x86_64 -nodefaults -display none \ -drive if=none,file=tmp.qcow2,id=foo -device ide-hd,drive=foo \ -device ide-hd,drive=foo Previously: qemu-system-x86_64: -device ide-hd,drive=foo: Property 'ide-hd.drive' can't take value 'foo', it's in use Now: qemu-system-x86_64: -device ide-hd,drive=foo: Drive 'foo' is already in use by another device Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1435068107-12594-3-git-send-email-peter.maydell@linaro.org
* qdev-properties-system: Change set_pointer's parse callback to use ErrorPeter Maydell2015-06-261-13/+20
| | | | | | | | | | | | | Instead of having set_pointer() call a parse callback which returns an error number that we then convert to an Error string with error_set_from_qdev_prop_error(), make the parse callback take an Error** and set the error itself. This will allow parse routines to provide more helpful error messages than the generic ones. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1435068107-12594-2-git-send-email-peter.maydell@linaro.org
* qerror: Clean up QERR_ macros to expand into a single stringMarkus Armbruster2015-06-221-2/+2
| | | | | | | | | | | | | | | | | | | | | These macros expand into error class enumeration constant, comma, string. Unclean. Has been that way since commit 13f59ae. The error class is always ERROR_CLASS_GENERIC_ERROR since the previous commit. Clean up as follows: * Prepend every use of a QERR_ macro by ERROR_CLASS_GENERIC_ERROR, and delete it from the QERR_ macro. No change after preprocessing. * Rewrite error_set(ERROR_CLASS_GENERIC_ERROR, ...) into error_setg(...). Again, no change after preprocessing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
* QemuOpts: Convert qemu_opts_foreach() to ErrorMarkus Armbruster2015-06-091-2/+3
| | | | | | | | | Retain the function value for now, to permit selective conversion of its callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com>
* QemuOpts: Drop qemu_opts_foreach() parameter abort_on_failureMarkus Armbruster2015-06-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | When the argument is non-zero, qemu_opts_foreach() stops on callback returning non-zero, and returns that value. When the argument is zero, it doesn't stop, and returns the bit-wise inclusive or of all the return values. Funky :) The callers that pass zero could just as well pass one, because their callbacks can't return anything but zero: * qemu_add_globals()'s callback qdev_add_one_global() * qemu_config_write()'s callback config_write_opts() * main()'s callbacks default_driver_check(), drive_enable_snapshot(), vnc_init_func() Drop the parameter, and always stop. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com>
* hw: Propagate errors through qdev_prop_set_drive()Markus Armbruster2015-03-101-12/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three kinds of callers: 1. On failure, report the error and abort Passing &error_abort does the job. No functional change. 2. On failure, report the error and exit() This is qdev_prop_set_drive_nofail(). Error reporting moves from qdev_prop_set_drive() to its caller. Because hiding away the error in the monitor right before exit() isn't helpful, replace qerror_report_err() by error_report_err(). Shouldn't make a difference, because qdev_prop_set_drive_nofail() should never be used in QMP context. 3. On failure, report the error and recover This is usb_msd_init() and scsi_bus_legacy_add_drive(). Error reporting and freeing the error object moves from qdev_prop_set_drive() to its callers. Because usb_msd_init() can't run in QMP context, replace qerror_report_err() by error_report_err() there. No functional change. scsi_bus_legacy_add_drive() calling qerror_report_err() is of course inappropriate, but this commit merely makes it more obvious. The next one will clean it up. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-Id: <1425925048-15482-3-git-send-email-armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* net: don't use set/get_pointer() in set/get_netdev()Jason Wang2014-12-191-38/+44
| | | | | | | | | | | | | | | | | | | | | | | Commit 1ceef9f27359cbe92ef124bf74de6f792e71f6fb (net: multiqueue support) tries to use set_pointer() and get_pointer() to set and get NICPeers which is not a pointer defined in DEFINE_PROP_NETDEV. This trick works but result a unclean and fragile implementation (e.g print_netdev and parse_netdev). This patch solves this issue by not using set/get_pinter() and set and get netdev directly in set_netdev() and get_netdev(). After this the parse_netdev() and print_netdev() were no longer used and dropped from the source. [Renamed 'err' label to 'out' as suggested by Markus Armbruster. --Stefan] Cc: Markus Armbruster <armbru@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* hw: Convert from BlockDriverState to BlockBackend, mostlyMarkus Armbruster2014-10-201-13/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | Device models should access their block backends only through the block-backend.h API. Convert them, and drop direct includes of inappropriate headers. Just four uses of BlockDriverState are left: * The Xen paravirtual block device backend (xen_disk.c) opens images itself when set up via xenbus, bypassing blockdev.c. I figure it should go through qmp_blockdev_add() instead. * Device model "usb-storage" prompts for keys. No other device model does, and this one probably shouldn't do it, either. * ide_issue_trim_cb() uses bdrv_aio_discard() instead of blk_aio_discard() because it fishes its backend out of a BlockAIOCB, which has only the BlockDriverState. * PC87312State has an unused BlockDriverState[] member. The next two commits take care of the latter two. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qdev: Drop legacy_name from qdev propertiesGonglei2014-10-151-4/+0
| | | | | | | | | | | The legacy_name is useless now, better help information is provided by description field of property. Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
* qdev: Add description field in PropertyInfo structGonglei2014-10-151-0/+4
| | | | | | | | | | | | The descriptions can serve as documentation in the code, and they can be used to provide better help. Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
* qdev: Move global validation to a single functionEduardo Habkost2014-09-181-17/+1
| | | | | | | | | | | | | | | | | | | Currently GlobalProperty.not_used=false has multiple meanings: * It may be a property for a hotpluggable device, which may or may not have been used by a device; * It may be a machine-type-provided property, which may or may not have been used by a device. * It may be a user-provided property that was actually not used by any device. Simplify the logic by having two separate fields: 'user_provided' and 'used'. This allows the entire global property validation logic to be contained in a single function, and allows more specific error messages. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* qdev: Fix crash when using non-device class name on -globalEduardo Habkost2014-07-061-1/+2
| | | | | | | | | | | | | | | | | | | | This fixes the following crash: $ qemu-system-x86_64 -global container.xxx=y hw/core/qdev-properties-system.c:399:qdev_add_one_global: Object 0x7f7eff234100 is not an instance of type device Aborted (core dumped) New behavior will be to just warn, just like when non-existing clas names are used: $ qemu-system-x86_64 -global container.xxx=y qemu-system-x86_64: Warning: "-global container.xxx=y" not used Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Tested-by: Don Slutz <dslutz@verizon.com>
* qdev: drop iothread property typeStefan Hajnoczi2014-07-011-50/+0
| | | | | | The iothread property type is no longer used and can be removed. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* net: move queue number into NICPeersJiri Pirko2014-06-271-2/+1
| | | | | | | | | It indicates the number of elements in ncs field and makes sense to have int inside NICPeers. Also in parse_netdev we do not need to access container and work with NICPeers only. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* qdev: Display warning about unused -globalDon Slutz2014-06-051-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | This can help a user understand why -global was ignored. For example: with "-vga cirrus"; "-global vga.vgamem_mb=16" is just ignored when "-global cirrus-vga.vgamem_mb=16" is not. This is currently clear when the wrong property is provided: out/x86_64-softmmu/qemu-system-x86_64 -global cirrus-vga.vram_size_mb=16 -monitor pty -vga cirrus char device redirected to /dev/pts/20 (label compat_monitor0) qemu-system-x86_64: Property '.vram_size_mb' not found Aborted (core dumped) vs out/x86_64-softmmu/qemu-system-x86_64 -global vga.vram_size_mb=16 -monitor pty -vga cirrus char device redirected to /dev/pts/20 (label compat_monitor0) VNC server running on `::1:5900' ^Cqemu: terminating on signal 2 Signed-off-by: Don Slutz <dslutz@verizon.com> Acked-by: Michael S. Tsirkin <mst@redhat.com>
* hw: Consistently name Error * objects err, and not errpMarkus Armbruster2014-05-051-5/+5
| | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
* iothread: add "iothread" qdev property typeStefan Hajnoczi2014-03-131-0/+51
| | | | | | | | | | | | | | | | Add a "iothread" qdev property type so devices can be hooked up to an IOThread from the comand-line: qemu -object iothread,id=iothread0 \ -device some-device,x-iothread=iothread0 Note that Paolo Bonzini <pbonzini@redhat.com> has suggested using QOM links instead. This way the relationship between the objects is reflected in QOM. There are currently shortcomings of object_property_add_link() which prevent this use case. I will attempt to fix them and move to QOM links in a separate series. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* qdev: make get_pointer() handle temporary stringsIgor Mammedov2014-03-131-8/+11
| | | | | | | | | | | get_pointer()'s print() callback might return a heap allocated string, to avoid adding dedicated get_pointer_foo for this case convert current print() callbacks to return temporary heap allocated string and make get_pointer() free it. Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* qdev: Use QAPI type names for propertiesPaolo Bonzini2014-02-141-4/+8
| | | | | | | | | | Use "drive", "chr", etc. only for legacy_name (which shows up in -device foo,? output). Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
* hw: Remove assert_no_error usagesPeter Crosthwaite2014-01-061-6/+2
| | | | | | | | | | Replace assert_no_error() usages with the error_abort system. &error_abort is passed into API calls to signal to the Error sub-system that any errors are fatal. Removes need for caller assertions. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* qdev-properties-system.c: Allow vlan or netdev for -device, not bothVlad Yasevich2013-11-221-0/+9
| | | | | | | | | | | | | | | | It is currently possible to specify things like: -device e1000,netdev=foo,vlan=1 With this usage, whichever argument was specified last (vlan or netdev) overwrites what was previousely set and results in a non-working configuration. Even worse, when used with multiqueue devices, it causes a segmentation fault on exit in qemu_free_net_client. That patch treates the above command line options as invalid and generates an error at start-up. Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* sysemu: avoid proliferation of include/ subdirectoriesPaolo Bonzini2013-04-151-1/+1
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* hw: move target-independent files to subdirectoriesPaolo Bonzini2013-04-081-0/+391
This patch tackles all files that are compiled once, moving them to subdirectories of hw/. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>