qemu-patch-raspberry4/tests
Markus Armbruster c42e8742f5 block: Use JSON null instead of "" to disable backing file
BlockdevRef is an alternate of BlockdevOptions (inline definition) and
str (reference to an existing block device by name).  BlockdevRef
value "" is special: "no block device should be referenced."  It's
actually interpreted that way in just one place: optional member
@backing of COW formats.  Semantics:

* Present means "use this block device" as backing storage

* Absent means "default to the one stored in the image"

* Except "" means "don't use backing storage at all"

The first two are perfectly normal: when the parameter is absent, it
defaults to an implied value, but the value's meaning is the same.

The third one overloads the parameter with a second meaning.  The
overloading is *implicit*, i.e. it's not visible in the types.  Works
here, because "" is not a value block device ID.

Pressing argument values the schema accepts, but are semantically
invalid, into service to mean "do something else entirely" is not
general, as suitable invalid values need not exist.  I also find it
ugly.

To clean this up, we could add a separate flag argument to suppress
@backing, or add a distinct value to @backing.  This commit implements
the latter: add JSON null to the values of @backing, deprecate "".

Because we're so close to the 2.10 freeze, implement it in the
stupidest way possible: have qmp_blockdev_add() rewrite null to ""
before anything else can see the null.  Works, because BlockdevRef
occurs only within arguments of blockdev-add.  The proper way to do it
would be rewriting "" to null, preferably in a cleaner way, but that
requires fixing up code to work with null.  Add a TODO comment for
that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-07-24 13:35:11 +02:00
..
acpi-test-data i386/acpi: update expected acpi files 2017-07-03 22:42:36 +03:00
data test-qga: add test for guest-get-osinfo 2017-07-18 05:49:01 -05:00
docker docker: install clang since Shippable setup_ve() verify it is available 2017-07-18 10:58:36 +01:00
guest-debug tests/guest-debug: introduce basic gdbstub tests 2015-12-17 13:37:15 +00:00
image-fuzzer tests: Use Python 2.6 "except E as ..." syntax 2016-02-08 17:29:54 +01:00
libqos libqos: add virtio used ring support 2017-06-30 11:03:45 +01:00
migration tests: introduce a framework for testing migration performance 2016-07-22 13:23:39 +05:30
multiboot tests: Avoid non-portable 'echo -ARG' 2017-07-11 17:45:00 +02:00
qapi-schema qapi: Introduce a first class 'null' type 2017-07-24 13:35:11 +02:00
qemu-iotests block: Use JSON null instead of "" to disable backing file 2017-07-24 13:35:11 +02:00
rocker tests: Avoid non-portable 'echo -ARG' 2017-07-11 17:45:00 +02:00
tcg Replace 'struct ucontext' with 'ucontext_t' type 2017-07-20 10:10:28 +01:00
vmstate-static-checker-data tests: vmstate static checker: add size mismatch inside substructure 2014-06-23 19:14:52 +02:00
.gitignore tests: crypto: add hmac speed benchmark support 2017-07-19 10:11:05 +01:00
ac97-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
acpi-utils.c tests: Move reusable ACPI code into a utility file 2017-03-02 07:14:27 +02:00
acpi-utils.h hw/i386: Use Rev3 FADT (ACPI 2.0) instead of Rev1 to improve guest OS support. 2017-05-03 12:29:40 +02:00
ahci-test.c tests/ahci-test: Be mean with RAM 2017-07-18 11:47:57 -04:00
atomic_add-bench.c tests: add atomic_add-bench 2016-10-26 08:29:01 -07:00
benchmark-crypto-cipher.c tests: crypto: add cipher speed benchmark support 2017-07-19 10:11:05 +01:00
benchmark-crypto-hash.c tests: crypto: add hash speed benchmark support 2017-07-19 10:11:05 +01:00
benchmark-crypto-hmac.c tests: crypto: add hmac speed benchmark support 2017-07-19 10:11:05 +01:00
bios-tables-test.c pci, virtio, vhost: fixes 2017-05-18 10:01:08 +01:00
boot-order-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
boot-sector.c tests/boot-sector: Increase time-out to 90 seconds 2016-10-14 10:06:47 +11:00
boot-sector.h tests/boot-sector: Use mkstemp() to create a unique file name 2016-10-14 10:06:47 +11:00
boot-serial-test.c boot-serial-test: use -no-shutdown 2017-03-24 13:39:50 +00:00
check-block.sh tests: allow to specify list of formats to test for check-block.sh 2016-09-23 13:36:09 +02:00
check-qdict.c tests/qdict: check more get_try_int() cases 2017-06-20 14:31:33 +02:00
check-qjson.c qapi: Separate type QNull from QObject 2017-07-24 13:35:11 +02:00
check-qlist.c tests: remove /{qnum, qlist, dict}/destroy test 2017-06-20 14:31:31 +02:00
check-qnull.c qapi: Use QNull for a more regular visit_type_null() 2017-07-24 13:35:11 +02:00
check-qnum.c qnum: add uint type 2017-06-20 14:31:31 +02:00
check-qom-interface.c tests: fix check-qom-interface leaks 2016-09-08 17:57:32 +04:00
check-qom-proplist.c qom: Fix ambiguous path detection when ambiguous=NULL 2017-07-17 15:41:30 -03:00
check-qstring.c tests: remove /{qnum, qlist, dict}/destroy test 2017-06-20 14:31:31 +02:00
crypto-tls-x509-helpers.c tests: Clean up includes 2016-02-16 14:29:27 +00:00
crypto-tls-x509-helpers.h clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
device-introspect-test.c qmp: Include parent type on 'qom-list-types' output 2017-07-17 15:41:30 -03:00
display-vga-test.c qtest: add display-vga-test to ppc64 2017-01-31 10:10:13 +11:00
drive_del-test.c tests: Use null-co:// instead of /dev/null as the dummy image 2017-05-11 11:08:40 +02:00
ds1338-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
e1000-test.c tests: fix e1000-test leak 2017-03-01 11:51:28 +04:00
e1000e-test.c tests: fix e1000e leaks 2017-03-01 11:51:28 +04:00
eepro100-test.c tests: fix eepro100-test leak 2017-03-01 11:51:05 +04:00
endianness-test.c tests: fix endianness-test leaks 2017-03-01 00:09:28 +04:00
es1370-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
fdc-test.c fdc-test: Avoid deprecated 'change' command 2017-05-09 09:14:40 +02:00
fw_cfg-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
hd-geo-test.c tests: fix hd-geo-test leaks 2017-03-01 11:51:04 +04:00
i440fx-test.c tests: fix i440fx-test leaks 2017-03-01 11:51:28 +04:00
i82801b11-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
ide-test.c ide-test: check return of fwrite 2017-06-04 18:42:55 +03:00
intel-hda-test.c coccinelle: Remove unnecessary variables for function return value 2016-06-20 16:38:13 +02:00
io-channel-helpers.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
io-channel-helpers.h io: add QIOChannelSocket class 2015-12-18 12:18:31 +00:00
ioh3420-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
iothread.c aio: introduce aio_co_schedule and aio_co_wake 2017-02-21 11:14:07 +00:00
iothread.h aio: introduce aio_co_schedule and aio_co_wake 2017-02-21 11:14:07 +00:00
ipmi-bt-test.c tests: fix ipmi-bt-test leak 2017-03-01 11:51:05 +04:00
ipmi-kcs-test.c tests: fix ipmi-kcs-test leak 2017-03-01 11:51:05 +04:00
ipoctal232-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
ivshmem-test.c qtest: add ivshmem-test for ppc64 2017-01-31 10:10:13 +11:00
libqtest.c tests/libqtest: Print error instead of aborting when env variable is missing 2017-06-04 18:42:55 +03:00
libqtest.h libqtest: Add a generic function to run a callback function for every machine 2017-04-26 14:42:31 +01:00
m25p80-test.c aspeed/smc: extend tests for Command mode 2017-01-20 11:15:08 +00:00
m48t59-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
Makefile.include tests: Handle $RANDOM not being supported by the shell 2017-07-20 15:00:00 +01:00
megasas-test.c megasas: always store SCSIRequest* into MegasasCmd 2017-06-15 11:04:05 +02:00
ne2000-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
numa-test.c numa-test: fix query-cpus leaks 2017-05-30 16:09:48 -03:00
nvme-test.c tests: Use null-co:// instead of /dev/null as the dummy image 2017-05-11 11:08:40 +02:00
pc-cpu-test.c libqtest: Add a generic function to run a callback function for every machine 2017-04-26 14:42:31 +01:00
pcnet-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
pkix_asn1_tab.c qtest: fix make check complaint in crypto module 2016-10-19 10:09:24 +01:00
pnv-xscom-test.c powernv: Don't test POWER9 CPU yet 2017-03-03 11:30:59 +11:00
postcopy-test.c chardev: move headers to include/chardev 2017-06-02 11:33:52 +04:00
prom-env-test.c tests/prom-env: Enable the test for the sun4u machine, too 2017-02-28 09:03:39 +03:00
ptimer-test-stubs.c tests: fix ptimer leaks 2017-03-01 00:09:28 +04:00
ptimer-test.c tests: fix ptimer leaks 2017-03-01 00:09:28 +04:00
ptimer-test.h tests: ptimer: Change the copyright comment 2016-10-24 16:26:53 +01:00
pvpanic-test.c tests: fix qmp response leak 2017-03-01 00:09:28 +04:00
pxe-test.c tests/boot-sector: Use mkstemp() to create a unique file name 2016-10-14 10:06:47 +11:00
q35-test.c tests/q35-test: add TSEG size checks 2017-06-16 18:44:55 +03:00
qemu-iotests-quick.sh qemu-iotests: Speed up make check-block 2015-01-13 11:47:55 +00:00
qht-bench.c exec: [tcg] Use different TBs according to the vCPU's dynamic tracing state 2017-07-17 13:11:05 +01:00
qmp-test.c qapi: Drop unused non-strict qobject input visitor 2017-03-05 09:14:19 +01:00
qom-test.c libqtest: Add a generic function to run a callback function for every machine 2017-04-26 14:42:31 +01:00
rcutorture.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
rtas-test.c tests: don't check if qtest_spapr_boot() returns NULL 2016-10-28 09:36:58 +11:00
rtc-test.c qtest: add rtc periodic timer test 2017-06-06 20:18:35 +02:00
rtl8139-test.c libqos: Change PCI accessors to take opaque BAR handle 2016-10-28 09:38:27 +11:00
spapr-phb-test.c spapr: Improved placement of PCI host bridges in guest memory map 2016-10-16 12:04:15 +11:00
tco-test.c tests: fix tco-test leaks 2017-03-01 11:51:25 +04:00
test-aio-multithread.c cpus: define QEMUTimerListNotifyCB for QEMU system emulation 2017-03-14 13:28:29 +01:00
test-aio.c cpus: define QEMUTimerListNotifyCB for QEMU system emulation 2017-03-14 13:28:29 +01:00
test-arm-mptimer.c tests: Add tests for the ARM MPTimer 2016-10-24 16:26:54 +01:00
test-base64.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-bitcnt.c tests: New test-bitcnt 2017-01-10 08:49:59 -08:00
test-bitops.c bitops.h: Implement half-shuffle and half-unshuffle ops 2016-06-17 15:23:51 +01:00
test-blockjob-txn.c blockjob: strengthen a bit test-blockjob-txn 2017-05-24 16:38:51 -04:00
test-blockjob.c blockjob: introduce block_job_early_fail 2017-05-24 16:38:51 -04:00
test-bufferiszero.c cutils: Add test for buffer_is_zero 2016-09-13 19:13:32 +02:00
test-char.c test-char: add hotswap test 2017-07-14 11:04:34 +02:00
test-clone-visitor.c tests/qapi-schema: Avoid 'str' in alternate test cases 2017-05-31 16:04:05 +02:00
test-coroutine.c test-coroutine: test qemu_coroutine_entered() 2016-09-28 17:11:23 +01:00
test-crypto-afsplit.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
test-crypto-block.c block: pass option prefix down to crypto layer 2017-07-11 17:44:56 +02:00
test-crypto-cipher.c crypto: add 3des-ede support when using libgcrypt/nettle 2016-12-21 14:26:26 +00:00
test-crypto-hash.c crypto: fix initialization of crypto in tests 2016-10-19 10:23:55 +01:00
test-crypto-hmac.c crypto: add HMAC algorithms testcases 2016-12-22 09:24:59 +00:00
test-crypto-ivgen.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
test-crypto-pbkdf.c crypto: support more hash algorithms for pbkdf 2016-09-19 16:30:45 +01:00
test-crypto-secret.c crypto: remove temp files on completion of secrets test 2016-06-13 12:41:17 +01:00
test-crypto-tlscredsx509.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
test-crypto-tlssession.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
test-crypto-xts.c crypto: rename OUT to out in xts test to avoid clash on MinGW 2016-07-04 10:46:59 +01:00
test-cutils.c util/cutils: Change qemu_strtosz*() from int64_t to uint64_t 2017-02-23 20:35:36 +01:00
test-filter-mirror.c tests: fix qmp response leak 2017-03-01 00:09:28 +04:00
test-filter-redirector.c tests: fix qmp response leak 2017-03-01 00:09:28 +04:00
test-hbitmap.c tests: add hbitmap iter test 2017-07-11 17:44:57 +02:00
test-hmp.c hmp: add hmp analogue for qmp-chardev-change 2017-07-14 11:04:34 +02:00
test-int128.c int128: Use __int128 if available 2016-10-26 08:29:00 -07:00
test-io-channel-buffer.c tests: Clean up includes 2016-02-16 14:29:27 +00:00
test-io-channel-command.c tests: fix leaks in test-io-channel-command 2017-03-01 00:09:28 +04:00
test-io-channel-file.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
test-io-channel-socket.c sockets: Limit SocketAddressLegacy to external interfaces 2017-05-09 09:14:40 +02:00
test-io-channel-tls.c io: change the QIOTask callback signature 2017-01-23 15:32:18 +00:00
test-io-task.c io: fix possible double free of task error object 2017-01-26 10:26:18 +00:00
test-iov.c tests: fix test-iov leaks 2016-09-08 17:57:32 +04:00
test-keyval.c tests: Remove test cases for alternates of 'number' and 'int' 2017-06-19 14:56:29 +02:00
test-logging.c test-logging: don't hard-code paths in /tmp 2016-08-19 12:44:11 +01:00
test-mul64.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-netfilter.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-opts-visitor.c qapi: Fix QemuOpts visitor regression on unvisited input 2017-03-22 19:24:34 +01:00
test-qapi-util.c qapi: New parse_qapi_name() 2017-03-07 16:07:47 +01:00
test-qdev-global-props.c test-qdev-global-props: Test global property ordering 2017-07-17 15:41:30 -03:00
test-qdist.c qdist: return "(empty)" instead of NULL when printing an empty dist 2016-08-03 18:44:56 +02:00
test-qemu-opts.c qobject: Use simpler QDict/QList scalar insertion macros 2017-05-09 09:13:51 +02:00
test-qga.c test-qga: add test for guest-get-osinfo 2017-07-18 05:49:01 -05:00
test-qht-par.c clean-includes: run it once more 2016-06-16 18:39:03 +02:00
test-qht.c test-qht: perform lookups under rcu_read_lock 2016-10-06 18:04:13 +02:00
test-qmp-commands.c qapi: merge QInt and QFloat in QNum 2017-06-20 14:31:31 +02:00
test-qmp-event.c qapi: merge QInt and QFloat in QNum 2017-06-20 14:31:31 +02:00
test-qobject-input-visitor.c tests/test-qobject-input-visitor: Drop redundant test 2017-07-24 13:35:11 +02:00
test-qobject-output-visitor.c qapi: Introduce a first class 'null' type 2017-07-24 13:35:11 +02:00
test-rcu-list.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-replication.c tests: Disable image lock in test-replication 2017-05-11 11:08:41 +02:00
test-shift128.c host-utils: Implement unsigned quadword left/right shift and unit tests 2017-01-31 10:10:14 +11:00
test-string-input-visitor.c qapi: Fix string input visitor regression for empty lists 2017-03-21 10:43:01 +01:00
test-string-output-visitor.c qapi: rename *qmp-*-visitor* to *qobject-*-visitor* 2016-10-25 16:25:48 +02:00
test-thread-pool.c test-thread-pool: use generic AioContext infrastructure 2017-02-21 11:14:07 +00:00
test-throttle.c block: remove timer canceling in throttle_config() 2017-07-18 15:14:35 +02:00
test-timed-average.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-uuid.c test-uuid: fix leak 2016-11-11 20:53:23 +08:00
test-visitor-serialization.c test-visitor-serialization: Pass &error_abort to qobject_from_json() 2017-03-07 16:07:47 +01:00
test-vmstate.c migration: Move migration.h to migration/ 2017-06-13 11:00:45 +02:00
test-write-threshold.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-x86-cpuid-compat.c qapi: merge QInt and QFloat in QNum 2017-06-20 14:31:31 +02:00
test-x86-cpuid.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-xbzrle.c migration: Create migration/xbzrle.h 2017-05-18 18:04:54 +02:00
tmp105-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
tpci200-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
usb-hcd-ehci-test.c tests: fix usb-test leaks 2017-03-01 11:51:29 +04:00
usb-hcd-ohci-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
usb-hcd-uhci-test.c tests: Use null-co:// instead of /dev/null as the dummy image 2017-05-11 11:08:40 +02:00
usb-hcd-xhci-test.c tests: Use null-co:// instead of /dev/null as the dummy image 2017-05-11 11:08:40 +02:00
vhost-user-bridge.c vhost-user-bridge: fix iov_restore_front() warning 2017-06-08 22:02:36 +03:00
vhost-user-test.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
virtio-9p-test.c tests/virtio-9p-test: Don't call le*_to_cpus on fields of packed struct 2017-03-27 21:15:31 +02:00
virtio-balloon-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
virtio-blk-test.c tests: fix virtio-blk-test ISR dependence 2017-06-30 11:03:45 +01:00
virtio-console-test.c coccinelle: Remove unnecessary variables for function return value 2016-06-20 16:38:13 +02:00
virtio-net-test.c tests: fix virtio-net-test ISR dependence 2017-06-30 11:03:45 +01:00
virtio-rng-test.c tests: enable virtio tests on SPAPR 2016-10-28 09:36:58 +11:00
virtio-scsi-test.c tests: fix virtio-scsi-test ISR dependence 2017-06-30 11:03:45 +01:00
virtio-serial-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
vmgenid-test.c vmgenid-test: use boot-sector infrastructure 2017-07-14 17:03:03 +01:00
vmxnet3-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
wdt_ib700-test.c coccinelle: Remove unnecessary variables for function return value 2016-06-20 16:38:13 +02:00