Peter Maydell [Thu, 18 Mar 2021 17:48:21 +0000 (17:48 +0000)]
memory: Add offset_in_region to flatview_cb arguments
The function flatview_for_each_range() calls a callback for each
range in a FlatView. Currently the callback gets the start and
length of the range and the MemoryRegion involved, but not the offset
within the MemoryRegion. Add this to the callback's arguments; we're
going to want it for a new use in the next commit.
Peter Maydell [Thu, 18 Mar 2021 17:48:19 +0000 (17:48 +0000)]
memory: Make flatview_cb return bool, not int
The return value of the flatview_cb callback passed to the
flatview_for_each_range() function is zero if the iteration through
the ranges should continue, or non-zero to break out of it. Use a
bool for this rather than int.
Gavin Shan [Thu, 18 Mar 2021 02:38:01 +0000 (10:38 +0800)]
hw/arm/virt: Disable pl011 clock migration if needed
A clock is added by commit aac63e0e6ea3 ("hw/char/pl011: add a clock
input") since v5.2.0 which corresponds to virt-5.2 machine type. It
causes backwards migration failure from upstream to downstream (v5.1.0)
when the machine type is specified with virt-5.1.
This fixes the issue by following instructions from section "Connecting
subsections to properties" in docs/devel/migration.rst. With this applied,
the PL011 clock is migrated based on the machine type.
virt-5.2 or newer: migration
virt-5.1 or older: non-migration
Peter Maydell [Mon, 22 Mar 2021 18:50:25 +0000 (18:50 +0000)]
Merge remote-tracking branch 'remotes/philmd/tags/sdmmc-20210322' into staging
SD/MMC patches queue
- Fix build error when DEBUG_SD is on
- Perform SD ERASE operation
- SDHCI ADMA heap buffer overflow
(CVE-2020-17380, CVE-2020-25085, CVE-2021-3409)
# gpg: Signature made Mon 22 Mar 2021 17:13:43 GMT
# gpg: using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <[email protected]>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD 6BB2 E3E3 2C2C DEAD C0DE
* remotes/philmd/tags/sdmmc-20210322:
hw/sd: sdhci: Reset the data pointer of s->fifo_buffer[] when a different block size is programmed
hw/sd: sdhci: Limit block size only when SDHC_BLKSIZE register is writable
hw/sd: sdhci: Correctly set the controller status for ADMA
hw/sd: sdhci: Don't write to SDHC_SYSAD register when transfer is in progress
hw/sd: sdhci: Don't transfer any data when command time out
hw/sd: sd: Actually perform the erase operation
hw/sd: sd: Fix build error when DEBUG_SD is on
Bin Meng [Wed, 3 Mar 2021 12:26:39 +0000 (20:26 +0800)]
hw/sd: sdhci: Reset the data pointer of s->fifo_buffer[] when a different block size is programmed
If the block size is programmed to a different value from the
previous one, reset the data pointer of s->fifo_buffer[] so that
s->fifo_buffer[] can be filled in using the new block size in
the next transfer.
Bin Meng [Wed, 3 Mar 2021 12:26:35 +0000 (20:26 +0800)]
hw/sd: sdhci: Don't transfer any data when command time out
At the end of sdhci_send_command(), it starts a data transfer if the
command register indicates data is associated. But the data transfer
should only be initiated when the command execution has succeeded.
>>> Overrunning array "mxu_gpr" of 15 8-byte elements at element
index 4294967295 (byte offset 34359738367) using index "XRa - 1U"
(which evaluates to 4294967295).
This happens because the code is confused about which of XRa, XRb and
XRc is the output, and which are the inputs. XRa is the output, but
most of the conditions separating out different special cases are
written as if XRc is the output, with the result that we can end up
in the code path that assumes XRa is non-0 even when it is zero.
Fix the erroneous code, bringing it in to line with the structure
used in functions like gen_mxu_S32MAX_S32MIN() and
gen_mxu_Q8MAX_Q8MIN().
Peter Maydell [Mon, 22 Mar 2021 11:24:55 +0000 (11:24 +0000)]
Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging
# gpg: Signature made Mon 22 Mar 2021 09:35:08 GMT
# gpg: using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <[email protected]>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211
* remotes/jasowang/tags/net-pull-request:
net/eth: Add an assert() and invert if() statement to simplify code
net/eth: Read ip6_ext_hdr_routing buffer before accessing it
net/eth: Check iovec has enough data earlier
net/eth: Check size earlier in _eth_get_rss_ex_dst_addr()
net/eth: Better describe _eth_get_rss_ex_dst_addr's offset argument
net/eth: Simplify _eth_get_rss_ex_dst_addr()
net/eth: Use correct in6_address offset in _eth_get_rss_ex_dst_addr()
net/colo-compare.c: Optimize removal of secondary packet
net/colo-compare.c: Fix memory leak for non-tcp packet
hw/net: virtio-net: Initialize nc->do_not_pad to true
net: Pad short frames to minimum size before sending from SLiRP/TAP
net: Add a 'do_not_pad" to NetClientState
net: eth: Add a helper to pad a short Ethernet frame
* remotes/thuth-gitlab/tags/pull-request-2021-03-21:
FreeBSD: Upgrade to 12.2 release
contrib: ivshmem client and server build fix for SunOS.
configure: fix for SunOS based systems
tests/unit/test-block-iothread: fix maybe-uninitialized error on GCC 11
docs/devel/testing.rst: Fix references to unit tests
net/eth: Add an assert() and invert if() statement to simplify code
To simplify the function body, invert the if() statement, returning
earlier.
Since we already checked there is enough data in the iovec buffer,
simply add an assert() call to consume the bytes_read variable.
net/eth: Read ip6_ext_hdr_routing buffer before accessing it
We can't know the caller read enough data in the memory pointed
by ext_hdr to cast it as a ip6_ext_hdr_routing.
Declare rt_hdr on the stack and fill it again from the iovec.
Since we already checked there is enough data in the iovec buffer,
simply add an assert() call to consume the bytes_read variable.
This fix a 2 bytes buffer overrun in eth_parse_ipv6_hdr() reported
by QEMU fuzzer:
$ cat << EOF | ./qemu-system-i386 -M pc-q35-5.0 \
-accel qtest -monitor none \
-serial none -nographic -qtest stdio
outl 0xcf8 0x80001010
outl 0xcfc 0xe1020000
outl 0xcf8 0x80001004
outw 0xcfc 0x7
write 0x25 0x1 0x86
write 0x26 0x1 0xdd
write 0x4f 0x1 0x2b
write 0xe1020030 0x4 0x190002e1
write 0xe102003a 0x2 0x0807
write 0xe1020048 0x4 0x12077cdd
write 0xe1020400 0x4 0xba077cdd
write 0xe1020420 0x4 0x190002e1
write 0xe1020428 0x4 0x3509d807
write 0xe1020438 0x1 0xe2
EOF
=================================================================
==2859770==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffdef904902 at pc 0x561ceefa78de bp 0x7ffdef904820 sp 0x7ffdef904818
READ of size 1 at 0x7ffdef904902 thread T0
#0 0x561ceefa78dd in _eth_get_rss_ex_dst_addr net/eth.c:410:17
#1 0x561ceefa41fb in eth_parse_ipv6_hdr net/eth.c:532:17
#2 0x561cef7de639 in net_tx_pkt_parse_headers hw/net/net_tx_pkt.c:228:14
#3 0x561cef7dbef4 in net_tx_pkt_parse hw/net/net_tx_pkt.c:273:9
#4 0x561ceec29f22 in e1000e_process_tx_desc hw/net/e1000e_core.c:730:29
#5 0x561ceec28eac in e1000e_start_xmit hw/net/e1000e_core.c:927:9
#6 0x561ceec1baab in e1000e_set_tdt hw/net/e1000e_core.c:2444:9
#7 0x561ceebf300e in e1000e_core_write hw/net/e1000e_core.c:3256:9
#8 0x561cef3cd4cd in e1000e_mmio_write hw/net/e1000e.c:110:5
Address 0x7ffdef904902 is located in stack of thread T0 at offset 34 in frame
#0 0x561ceefa320f in eth_parse_ipv6_hdr net/eth.c:486
We want to check fields from ip6_ext_hdr_routing structure
and if correct read the full in6_address. Let's directly check
if our iovec contains enough data for everything, else return
early.
The length field is already contained in the ip6_ext_hdr structure.
Check it direcly in eth_parse_ipv6_hdr() before calling
_eth_get_rss_ex_dst_addr(), which gets a bit simplified.
Bin Meng [Wed, 17 Mar 2021 06:26:29 +0000 (14:26 +0800)]
net: Pad short frames to minimum size before sending from SLiRP/TAP
The minimum Ethernet frame length is 60 bytes. For short frames with
smaller length like ARP packets (only 42 bytes), on a real world NIC
it can choose either padding its length to the minimum required 60
bytes, or sending it out directly to the wire. Such behavior can be
hardcoded or controled by a register bit. Similarly on the receive
path, NICs can choose either dropping such short frames directly or
handing them over to software to handle.
On the other hand, for the network backends like SLiRP/TAP, they
don't expose a way to control the short frame behavior. As of today
they just send/receive data from/to the other end connected to them,
which means any sized packet is acceptable. So they can send and
receive short frames without any problem. It is observed that ARP
packets sent from SLiRP/TAP are 42 bytes, and SLiRP/TAP just send
these ARP packets to the other end which might be a NIC model that
does not allow short frames to pass through.
To provide better compatibility, for packets sent from QEMU network
backends like SLiRP/TAP, we change to pad short frames before sending
it out to the other end, if the other end does not forbid it via the
nc->do_not_pad flag. This ensures a backend as an Ethernet sender
does not violate the spec. But with this change, the behavior of
dropping short frames from SLiRP/TAP interfaces in the NIC model
cannot be emulated because it always receives a packet that is spec
complaint. The capability of sending short frames from NIC models is
still supported and short frames can still pass through SLiRP/TAP.
This commit should be able to fix the issue as reported with some
NIC models before, that ARP requests get dropped, preventing the
guest from becoming visible on the network. It was workarounded in
these NIC models on the receive path, that when a short frame is
received, it is padded up to 60 bytes.
The following 2 commits seem to be the one to workaround this issue
in e1000 and vmxenet3 before, and should probably be reverted.
commit 78aeb23eded2 ("e1000: Pad short frames to minimum size (60 bytes)")
commit 40a87c6c9b11 ("vmxnet3: Pad short frames to minimum size (60 bytes)")
Bin Meng [Wed, 17 Mar 2021 06:26:28 +0000 (14:26 +0800)]
net: Add a 'do_not_pad" to NetClientState
This adds a flag in NetClientState, so that a net client can tell
its peer that the packets do not need to be padded to the minimum
size of an Ethernet frame (60 bytes) before sending to it.
Warner Losh [Sun, 7 Mar 2021 15:56:54 +0000 (08:56 -0700)]
FreeBSD: Upgrade to 12.2 release
FreeBSD 12.1 has reached end of life. Use 12.2 instead so that FreeBSD's
project's packages will work. Update which timezone to pick. Work around a QEMU
bug that incorrectly raises an exception on a CRC32 instruction with the FPU
disabled. The qemu bug is described here:
https://www.mail-archive.com/[email protected]/msg784158.html
tests/unit/test-block-iothread: fix maybe-uninitialized error on GCC 11
When building qemu with GCC 11, test-block-iothread produces the following
warning:
../tests/unit/test-block-iothread.c:148:11: error: ‘buf’ may be used
uninitialized [-Werror=maybe-uninitialized]
This is caused by buf[512] left uninitialized and passed to
bdrv_save_vmstate() that expects a const uint8_t *, so the compiler
assumes it will be read and expects the parameter to be initialized.
docs/devel/testing.rst: Fix references to unit tests
With the recent move of the unit tests to tests/unit directory some
instructions under the "Unit tests" section became imprecise, which
are fixed by this change.
* remotes/bonzini-gitlab/tags/for-upstream:
tests/qtest: cleanup the testcase for bug 1878642
hw/intc/i8259: Refactor pic_read_irq() to avoid uninitialized variable
i386: Make migration fail when Hyper-V reenlightenment was enabled but 'user_tsc_khz' is unset
i386: Fix 'hypercall_hypercall' typo
target/i386: svm: do not discard high 32 bits of EXITINFO1
target/i386: fail if toggling LA57 in 64-bit mode
target/i386: allow modifying TCG phys-addr-bits
qom: use qemu_printf to print help for user-creatable objects
* remotes/armbru/tags/pull-qapi-2021-03-16-v4:
qapi: New -compat deprecated-input=crash
qapi: Implement deprecated-input=reject for QMP command arguments
qapi: Implement deprecated-input=reject for QMP commands
test-util-sockets: Add stub for monitor_set_cur()
qapi: Implement deprecated-output=hide for QMP introspection
monitor: Drop query-qmp-schema 'gen': false hack
qapi: Implement deprecated-output=hide for QMP event data
qapi: Implement deprecated-output=hide for QMP events
qapi: Implement deprecated-output=hide for QMP command results
qemu-options: New -compat to set policy for deprecated interfaces
qemuutil: remove qemu_set_fd_handler duplicate symbol
* remotes/armbru/tags/pull-qom-fdc-2021-03-16-v5:
memory: Drop "qemu:" prefix from QOM memory region type names
hw: Replace anti-social QOM type names
blockdev: Drop deprecated bogus -drive interface type
fdc: Inline fdctrl_connect_drives() into fdctrl_realize_common()
fdc: Drop deprecated floppy configuration
docs/system/deprecated: Fix note on fdc drive properties
fuzz: Avoid deprecated misuse of -drive if=sd
qapi: Implement deprecated-input=reject for QMP command arguments
This policy rejects deprecated input, and thus permits "testing the
future". Implement it for QMP command arguments: reject commands with
deprecated ones. Example: when QEMU is run with -compat
deprecated-input=reject, then
qapi: Implement deprecated-input=reject for QMP commands
This policy rejects deprecated input, and thus permits "testing the
future". Implement it for QMP commands: make deprecated ones fail.
Example: when QEMU is run with -compat deprecated-input=reject, then
{"execute": "query-cpus"}
fails like this
{"error": {"class": "CommandNotFound", "desc": "Deprecated command query-cpus disabled by policy"}}
When the deprecated command is removed, the error will change to
{"error": {"class": "CommandNotFound", "desc": "The command query-cpus has not been found"}}
qapi: Implement deprecated-output=hide for QMP introspection
This policy suppresses deprecated bits in output, and thus permits
"testing the future". Implement it for QMP command query-qmp-schema:
suppress information on deprecated commands, events and object type
members, i.e. anything that has the special feature flag "deprecated".
QMP commands return their response as a generated QAPI type, which the
monitor core converts to JSON via QObject.
query-qmp-schema's response is the generated introspection data. This
is a QLitObject since commit 7d0f982bfb "qapi: generate a literal
qobject for introspection", v2.12). Before, it was a string. Instead
of converting QLitObject / string -> QObject -> QAPI type
SchemaInfoList -> QObject -> JSON, we take a shortcut: the command is
'gen': false, so it can return the QObject instead of the QAPI type.
Slightly simpler and more efficient.
The next commit will filter the response for output policy, and this
is easier in the SchemaInfoList representation. Drop the shortcut.
This replaces the manual command registration by a generated one. The
manual registration makes the command available before the machine is
built by passing flag QCO_ALLOW_PRECONFIG. To keep it available
there, we need need to add 'allow-preconfig': true to its definition
in the schema.
qapi: Implement deprecated-output=hide for QMP command results
This policy suppresses deprecated bits in output, and thus permits
"testing the future". Implement it for QMP command results. Example:
when QEMU is run with -compat deprecated-output=hide, then
qemu-options: New -compat to set policy for deprecated interfaces
New option -compat lets you configure what to do when deprecated
interfaces get used. This is intended for testing users of the
management interfaces. It is experimental.
-compat deprecated-input=<input-policy> configures what to do when
deprecated input is received. Input policy can be "accept" (accept
silently), or "reject" (reject the request with an error).
-compat deprecated-output=<out-policy> configures what to do when
deprecated output is sent. Output policy can be "accept" (pass on
unchanged), or "hide" (filter out the deprecated parts).
Default is "accept". Policies other than "accept" are implemented
later in this series.
For now, -compat covers only syntactic aspects of QMP, i.e. stuff
tagged with feature 'deprecated'. We may want to extend it to cover
semantic aspects, CLI, and experimental features.
Note that there is no good way for management application to detect
presence of -compat: it's not visible output of query-qmp-schema or
query-command-line-options. Tolerable, because it's meant for
testing. If running with -compat fails, skip the test.
Paolo Bonzini [Thu, 18 Mar 2021 15:55:09 +0000 (16:55 +0100)]
qemuutil: remove qemu_set_fd_handler duplicate symbol
libqemuutil has two definitions of qemu_set_fd_handler. This
is not needed since the only users of the function are
qemu-io.c and the emulators, both of which already include
util/main-loop.c.
memory: Drop "qemu:" prefix from QOM memory region type names
Almost all QOM type names consist only of letters, digits, '-', '_',
and '.'. Just two contain ':': "qemu:memory-region" and
"qemu:iommu-memory-region". Neither can be plugged with -object.
Rename them to "memory-region" and "iommu-memory-region".
These are all device types. They can't be plugged with -device /
device_add, except for xlnx,zynqmp-pmu-soc, and I doubt that one
actually works.
They *can* be used with -device / device_add to request help.
Usability is poor, though: you have to double the comma, like this:
$ qemu-system-x86_64 -device SUNW,,fdtwo,help
Trap for the unwary. The fact that this was broken in
device-introspect-test for more than six years until commit e27bd49876
fixed it demonstrates that "the unwary" includes seasoned developers.
One QOM type name contains ' ': "ICH9 SMB". Because having to
remember just one way to quote would be too easy.
Rename the "SUNW,FOO types to "sun-FOO". Summarily replace ',' and '
' by '-' in the other type names.
fdc: Inline fdctrl_connect_drives() into fdctrl_realize_common()
The previous commit rendered the name fdctrl_connect_drives() somewhat
misleading. Get rid of it by inlining the (now pretty simple)
function into its only caller.
docs/system/deprecated: Fix note on fdc drive properties
Commit 4a27a638e7 "fdc: Deprecate configuring floppies with -global
isa-fdc" actually deprecated any use of floppy controller driver
properties, not just with -global. Correct the deprecation note
accordingly.
hw/intc/i8259: Refactor pic_read_irq() to avoid uninitialized variable
Some compiler versions are smart enough to detect a potentially
uninitialized variable, but are not smart enough to detect that this
cannot happen due to the code flow:
../hw/intc/i8259.c: In function ‘pic_read_irq’:
../hw/intc/i8259.c:203:13: error: ‘irq2’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
203 | irq = irq2 + 8;
| ~~~~^~~~~~~~~~
Restrict irq2 variable use to the inner statement.
Vitaly Kuznetsov [Fri, 19 Mar 2021 12:38:01 +0000 (13:38 +0100)]
i386: Make migration fail when Hyper-V reenlightenment was enabled but 'user_tsc_khz' is unset
KVM doesn't fully support Hyper-V reenlightenment notifications on
migration. In particular, it doesn't support emulating TSC frequency
of the source host by trapping all TSC accesses so unless TSC scaling
is supported on the destination host and KVM_SET_TSC_KHZ succeeds, it
is unsafe to proceed with migration.
KVM_SET_TSC_KHZ is called from two sites: kvm_arch_init_vcpu() and
kvm_arch_put_registers(). The later (intentionally) doesn't propagate
errors allowing migrations to succeed even when TSC scaling is not
supported on the destination. This doesn't suit 're-enlightenment'
use-case as we have to guarantee that TSC frequency stays constant.
Require 'tsc-frequency=' command line option to be specified for successful
migration when re-enlightenment was enabled by the guest.
Paolo Bonzini [Thu, 18 Mar 2021 14:02:06 +0000 (10:02 -0400)]
target/i386: svm: do not discard high 32 bits of EXITINFO1
env->error_code is only 32-bits wide, so the high 32 bits of EXITINFO1
are being lost. However, even though saving guest state and restoring
host state must be delayed to do_vmexit, because they might take tb_lock,
it is always possible to write to the VMCB. So do this for the exit
code and EXITINFO1, just like it is already being done for EXITINFO2.
Peter Maydell [Fri, 19 Mar 2021 11:27:40 +0000 (11:27 +0000)]
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block layer patches and object-add QAPIfication
- QAPIfy object-add and --object
- stream: Fail gracefully if permission is denied
- storage-daemon: Fix crash on quit when job is still running
- curl: Fix use after free
- char: Deprecate backend aliases, fix QMP query-chardev-backends
- Fix image creation option defaults that exist in both the format and
the protocol layer (e.g. 'cluster_size' in qcow2 and rbd; the qcow2
default was incorrectly applied to the rbd layer)
* remotes/kevin/tags/for-upstream: (42 commits)
vl: allow passing JSON to -object
qom: move user_creatable_add_opts logic to vl.c and QAPIfy it
tests: convert check-qom-proplist to keyval
qom: Support JSON in HMP object_add and tools --object
char: Simplify chardev_name_foreach()
char: Deprecate backend aliases 'tty' and 'parport'
char: Skip CLI aliases in query-chardev-backends
qom: Add user_creatable_parse_str()
hmp: QAPIfy object_add
qemu-img: Use user_creatable_process_cmdline() for --object
qom: Add user_creatable_add_from_str()
qemu-nbd: Use user_creatable_process_cmdline() for --object
qemu-io: Use user_creatable_process_cmdline() for --object
qom: Factor out user_creatable_process_cmdline()
qom: Remove user_creatable_add_dict()
qemu-storage-daemon: Implement --object with qmp_object_add()
qom: Make "object" QemuOptsList optional
qapi/qom: QAPIfy object-add
qapi/qom: Add ObjectOptions for x-remote-object
qapi/qom: Add ObjectOptions for input-*
...
Paolo Bonzini [Fri, 12 Mar 2021 17:35:47 +0000 (12:35 -0500)]
vl: allow passing JSON to -object
Extend the ObjectOption code that was added in the previous patch to
enable passing JSON to -object. Even though we cannot yet add
non-scalar properties with the human-friendly comma-separated syntax,
they can now be added as JSON.
Paolo Bonzini [Fri, 12 Mar 2021 17:35:46 +0000 (12:35 -0500)]
qom: move user_creatable_add_opts logic to vl.c and QAPIfy it
Emulators are currently using OptsVisitor (via user_creatable_add_opts)
to parse the -object command line option. This has one extra feature,
compared to keyval, which is automatic conversion of integers to lists
as well as support for lists as repeated options:
So we cannot replace OptsVisitor with keyval right now. Still, this
patch moves the user_creatable_add_opts logic to vl.c since it is
not needed anywhere else, and makes it go through user_creatable_add_qapi.
In order to minimize code changes, the predicate still takes a string.
This can be changed later to use the ObjectType QAPI enum directly.
Paolo Bonzini [Fri, 12 Mar 2021 17:35:45 +0000 (12:35 -0500)]
tests: convert check-qom-proplist to keyval
The command-line creation test is using QemuOpts. Switch it to keyval,
since the emulator has some special needs and thus the last user of
user_creatable_add_opts will go away with the next patch.
Kevin Wolf [Thu, 11 Mar 2021 16:42:53 +0000 (17:42 +0100)]
char: Simplify chardev_name_foreach()
Both callers use callbacks that don't do anything when they are called
for CLI aliases. Instead of passing the cli_alias parameter, just don't
call the callbacks for aliases in the first place.
Kevin Wolf [Thu, 11 Mar 2021 16:42:51 +0000 (17:42 +0100)]
char: Skip CLI aliases in query-chardev-backends
The aliases "tty" and "parport" are only valid on the command line, QMP
commands like chardev-add don't know them. query-chardev-backends should
describe QMP and therefore not include them in the list of available
backends.
Kevin Wolf [Fri, 19 Feb 2021 17:14:01 +0000 (18:14 +0100)]
qom: Add user_creatable_parse_str()
The system emulator has a more complicated way of handling command line
options in that it reorders options before it processes them. This means
that parsing object options and creating the object happen at two
different points. Split the parsing part into a separate function that
can be reused by the system emulator command line.
Kevin Wolf [Wed, 17 Feb 2021 14:27:54 +0000 (15:27 +0100)]
hmp: QAPIfy object_add
This switches the HMP command object_add from a QemuOpts-based parser to
user_creatable_add_from_str() which uses a keyval parser and enforces
the QAPI schema.
Apart from being a cleanup, this makes non-scalar properties and help
accessible. In order for help to be printed to the monitor instead of
stdout, the printf() calls in the help functions are changed to
qemu_printf().
Kevin Wolf [Wed, 17 Feb 2021 11:56:45 +0000 (12:56 +0100)]
qemu-img: Use user_creatable_process_cmdline() for --object
This switches qemu-img from a QemuOpts-based parser for --object to
user_creatable_process_cmdline() which uses a keyval parser and enforces
the QAPI schema.
Apart from being a cleanup, this makes non-scalar properties accessible.
As a side effect, fix wrong exit codes in the object parsing error path
of 'qemu-img compare'. This was broken in commit 334c43e2c3 because
&error_fatal exits with an exit code of 1, while it should have been 2.
Document that exit code 0 is also returned when just requested help was
printed instead of comparing images. This is preexisting behaviour that
isn't changed by this patch, though another instance of it is added with
'--object help'.
Kevin Wolf [Wed, 17 Feb 2021 11:56:45 +0000 (12:56 +0100)]
qemu-nbd: Use user_creatable_process_cmdline() for --object
This switches qemu-nbd from a QemuOpts-based parser for --object to
user_creatable_process_cmdline() which uses a keyval parser and enforces
the QAPI schema.
Apart from being a cleanup, this makes non-scalar properties accessible.
Kevin Wolf [Wed, 17 Feb 2021 11:56:45 +0000 (12:56 +0100)]
qemu-io: Use user_creatable_process_cmdline() for --object
This switches qemu-io from a QemuOpts-based parser for --object to
user_creatable_process_cmdline() which uses a keyval parser and enforces
the QAPI schema.
Apart from being a cleanup, this makes non-scalar properties accessible.
Kevin Wolf [Wed, 17 Feb 2021 11:06:20 +0000 (12:06 +0100)]
qom: Factor out user_creatable_process_cmdline()
The implementation for --object can be shared between
qemu-storage-daemon and other binaries, so move it into a function in
qom/object_interfaces.c that is accessible from everywhere.
This also requires moving the implementation of qmp_object_add() into a
new user_creatable_add_qapi(), because qom/qom-qmp-cmds.c is not linked
for tools.
user_creatable_print_help_from_qdict() can become static now.
Kevin Wolf [Mon, 22 Feb 2021 14:29:27 +0000 (15:29 +0100)]
qom: Make "object" QemuOptsList optional
This code is going away anyway, but for a few more commits, we'll be in
a state where some binaries still use QemuOpts and others don't. If the
"object" QemuOptsList doesn't even exist, we don't have to remove (or
fail to remove, and therefore abort) a user creatable object from it.
Kevin Wolf [Tue, 20 Oct 2020 11:27:22 +0000 (13:27 +0200)]
qapi/qom: QAPIfy object-add
This converts object-add from 'gen': false to the ObjectOptions QAPI
type. As an immediate benefit, clients can now use QAPI schema
introspection for user creatable QOM objects.
It is also the first step towards making the QAPI schema the only
external interface for the creation of user creatable objects. Once all
other places (HMP and command lines of the system emulator and all
tools) go through QAPI, too, some object implementations can be
simplified because some checks (e.g. that mandatory options are set) are
already performed by QAPI, and in another step, QOM boilerplate code
could be generated from the schema.
Kevin Wolf [Tue, 20 Oct 2020 10:47:58 +0000 (12:47 +0200)]
qapi/qom: Add ObjectOptions for confidential-guest-support
This adds a QAPI schema for the properties of the objects implementing
the confidential-guest-support interface.
pef-guest and s390x-pv-guest don't have any properties, so they only
need to be added to the ObjectType enum without adding a new branch to
ObjectOptions.
Kevin Wolf [Tue, 20 Oct 2020 10:47:58 +0000 (12:47 +0200)]
qapi/qom: Add ObjectOptions for filter-*
This adds a QAPI schema for the properties of the filter-* objects.
Some parts of the interface (in particular NetfilterProperties.position)
are very unusual for QAPI, but for now just describe the existing
interface.
net.json can't be included in qom.json because the storage daemon
doesn't have it. NetFilterDirection is still required in the new object
property definitions in qom.json, so move this enum to common.json.
Kevin Wolf [Tue, 20 Oct 2020 10:47:58 +0000 (12:47 +0200)]
qapi/qom: Add ObjectOptions for tls-*, deprecate 'loaded'
This adds a QAPI schema for the properties of the tls-* objects.
The 'loaded' property doesn't seem to make sense as an external
interface: It is automatically set to true in ucc->complete, and
explicitly setting it to true earlier just means that additional options
will be silently ignored.
In other words, the 'loaded' property is useless. Mark it as deprecated
in the schema from the start.
Kevin Wolf [Tue, 20 Oct 2020 10:47:58 +0000 (12:47 +0200)]
qapi/qom: Add ObjectOptions for secret*, deprecate 'loaded'
This adds a QAPI schema for the properties of the secret* objects.
The 'loaded' property doesn't seem to make sense as an external
interface: It is automatically set to true in ucc->complete, and
explicitly setting it to true earlier just means that additional options
will be silently ignored.
In other words, the 'loaded' property is useless. Mark it as deprecated
in the schema from the start.
Kevin Wolf [Tue, 20 Oct 2020 10:47:58 +0000 (12:47 +0200)]
qapi/qom: Add ObjectOptions for throttle-group
This adds a QAPI schema for the properties of the throttle-group object.
The only purpose of the x-* properties is to make the nested options in
'limits' available for a command line parser that doesn't support
structs. Any parser that will use the QAPI schema will supports structs,
though, so they will not be needed in the schema in the future.
To keep the conversion straightforward, add them to the schema anyway.
We can then remove the options and adjust documentation, test cases etc.
in a separate patch.
Kevin Wolf [Tue, 20 Oct 2020 10:47:58 +0000 (12:47 +0200)]
qapi/qom: Add ObjectOptions for rng-*, deprecate 'opened'
This adds a QAPI schema for the properties of the rng-* objects.
The 'opened' property doesn't seem to make sense as an external
interface: It is automatically set to true in ucc->complete, and
explicitly setting it to true earlier just means that trying to set
additional options will result in an error. After the property has once
been set to true (i.e. when the object construction has completed), it
can never be reset to false. In other words, the 'opened' property is
useless. Mark it as deprecated in the schema from the start.
Kevin Wolf [Tue, 20 Oct 2020 10:47:58 +0000 (12:47 +0200)]
qapi/qom: Add ObjectOptions for memory-backend-*
This adds a QAPI schema for the properties of the memory-backend-*
objects.
HostMemPolicy has to be moved to an include file that can be used by the
storage daemon, too, because ObjectOptions must be the same in all
binaries if we don't want to compile the whole code multiple times.
Kevin Wolf [Tue, 20 Oct 2020 10:47:58 +0000 (12:47 +0200)]
qapi/qom: Add ObjectOptions for cryptodev-*
This adds a QAPI schema for the properties of the cryptodev-* objects.
These interfaces have some questionable aspects (cryptodev-backend is
really an abstract base class without function, and the queues option
only makes sense for cryptodev-vhost-user), but as the goal is to
represent the existing interface in QAPI, leave these things in place.
Kevin Wolf [Tue, 20 Oct 2020 10:47:58 +0000 (12:47 +0200)]
qapi/qom: Add ObjectOptions for iothread
Add an ObjectOptions union that will eventually describe the options of
all user creatable object types. As unions can't exist without any
branches, also add the first object type.
This adds a QAPI schema for the properties of the iothread object.
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