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2022-09-20qga: Replace 'blacklist' and 'whitelist' in the guest agent sourcesThomas Huth
Let's use better, more inclusive wording here. Message-Id: <20220727092135.302915-3-thuth@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-07-13qga: add command 'guest-get-cpustats'zhenwei pi
A vCPU thread always reaches 100% utilization when: - guest uses idle=poll - disable HLT vm-exit - enable MWAIT Add new guest agent command 'guest-get-cpustats' to get guest CPU statistics, we can know the guest workload and how busy the CPU is. Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Message-Id: <20220707005602.696557-3-pizhenwei@bytedance.com> Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com> Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
2022-05-25qga-win32: Add support for NVME bus typeKonstantin Kostiuk
Bus type spaces (Indicates a storage spaces bus) is not supported, so return it as unknown. Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220524154344.869638-2-kkostiuk@redhat.com> Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
2022-05-25qga: add guest-get-diskstats command for Linux guestsluzhipeng
Add a new 'guest-get-diskstats' command for report disk io statistics for Linux guests. This can be useful for getting io flow or handling IO fault, no need to enter guests. Signed-off-by: luzhipeng <luzhipeng@cestc.cn> Message-Id: <20220520021935.676-1-luzhipeng@cestc.cn> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com> Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
2022-04-21qga: move qga_get_host_name()Marc-André Lureau
The function is specific to qemu-ga, no need to share it in QEMU. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com> Message-Id: <20220420132624.2439741-32-marcandre.lureau@redhat.com>
2022-04-06build-sys: drop ntddscsi.h checkMarc-André Lureau
The header has been part of MinGW-w64 since the introduction of the project (2007). While on MinGW(32), the legacy project, it was imported in 2014 from w32api-3.17 (commit e4803e0da2). According to build-platform.rst and our CI coverage, we only support building with MinGW-w64 (from Debian/Fedora). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com> Message-Id: <20220401085106.2167374-1-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06qga: replace qemu_gettimeofday() with g_get_real_time()Marc-André Lureau
GLib g_get_real_time() is an alternative to gettimeofday() which allows to simplify our code. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20220307070401.171986-4-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-03-21Use g_new() & friends where that makes obvious senseMarkus Armbruster
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer, for two reasons. One, it catches multiplication overflowing size_t. Two, it returns T * rather than void *, which lets the compiler catch more type errors. This commit only touches allocations with size arguments of the form sizeof(T). Patch created mechanically with: $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \ --macro-file scripts/cocci-macro-file.h FILES... Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20220315144156.1595462-4-armbru@redhat.com> Reviewed-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
2022-02-21meson, configure: move ntddscsi API check to mesonMarc-André Lureau
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-10qga-win: Detect Windows 11 by build numberKostiantyn Kostiuk
Windows 10 and 11 have the same major and minor versions. So, the only way to determine the correct version is to use the build number. After this commit, the guest agent will return the proper "version" and "version-id" for Windows 11. The "pretty-name" is read from the registry and will be incorrect until the MS updates the registry. We only can create some workaround and replace 10 to 11. Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2022-01-10qga-win: Detect OS based on Windows 10 by first build numberKostiantyn Kostiuk
Windows Server 2016, 2019, 2022 are based on Windows 10 and have the same major and minor versions. So, the only way to detect the proper version is to use the build number. Before this commit, the guest agent use the last build number for each OS, but it causes problems when new OS releases. There are few preview versions before release, and we can't update this list. After this commit, the guest agent will use the first build number. For each new preview version or release version, Microsoft increases the build number, so we can add the number of the first preview build and this will work until the new OS release. Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2022-01-10gqa-win: get_pci_info: Replace 'while' with 2 calls of the functionKostiantyn Kostiuk
Microsoft suggests this solution in the documentation: https://docs.microsoft.com/en-us/windows/win32/api/setupapi/nf-setupapi-setupdigetdeviceinterfacedetaila Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2022-01-10gqa-win: get_pci_info: Add g_autofree for few variablesKostiantyn Kostiuk
Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2022-01-10gqa-win: get_pci_info: Split logic to separate functionsKostiantyn Kostiuk
Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2022-01-10gqa-win: get_pci_info: Free parent_dev_info properlyKostiantyn Kostiuk
In case when the function fails to get parent device data, the parent_dev_info variable will be initialized, but not freed. Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2022-01-10gqa-win: get_pci_info: Use common 'end' labelKostiantyn Kostiuk
To prevent memory leaks, always try to free initialized variables. Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2022-01-10gqa-win: get_pci_info: Clean dev_info if handle is validKostiantyn Kostiuk
Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2021-08-26Remove superfluous ERRP_GUARD()Markus Armbruster
Macro ERRP_GUARD() is only needed when we want to dereference @errp or pass it to error_prepend() or error_append_hint(). Delete superfluous ones. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20210720125408.387910-15-armbru@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com>
2021-08-02qga-win: Free GMatchInfo properlyKostiantyn Kostiuk
The g_regex_match function creates match_info even if it returns FALSE. So we should always call g_match_info_free. A better solution is using g_autoptr for match_info variable. Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2021-08-02qga-win: Fix handle leak in ga_get_win_product_name()Basil Salman
In ga_get_win_product_name() a handle to Registry key was open but not closed. In this patch the handle is closed as part of the free routine. Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1929144 Signed-off-by: Basil Salman <basil@daynix.com> Signed-off-by: Basil Salman <bsalman@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2021-08-02qga-win: Fix build_guest_fsinfo() close of nonexistentBasil Salman
On the current error path of build_guest_fsinfo(), a non existent handle is passed to CloseHandle(). This patch adds initialization of hLocalDiskHandle to INVALID_HANDLE_VALUE, and checks for handle validity before the handle is closed. Signed-off-by: Basil Salman <basil@daynix.com> Signed-off-by: Basil Salman <basil@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2021-07-12qga-win: Add support of Windows Server 2022 in get-osinfo commandKostiantyn Kostiuk
Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2021-03-16qga: Delete redundant spacesAlexChen
Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: AlexChen <alex.chen@huawei.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2021-03-16qga: Add spaces around operatorAlexChen
Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: AlexChen <alex.chen@huawei.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> *fix 80+ char violation while we're here *fix w32 build breakage from changing INVALID_SET_FILE_POINTER definition from a cast to a subtraction Signed-off-by: Michael Roth <michael.roth@amd.com>
2021-01-28qapi: More complex uses of QAPI_LIST_APPENDEric Blake
These cases require a bit more thought to review; in each case, the code was appending to a list, but not with a FOOList **tail variable. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20210113221013.390592-6-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Flawed change to qmp_guest_network_get_interfaces() dropped] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2021-01-28qapi: Use QAPI_LIST_APPEND in trivial casesEric Blake
The easiest spots to use QAPI_LIST_APPEND are where we already have an obvious pointer to the tail of a list. While at it, consistently use the variable name 'tail' for that purpose. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20210113221013.390592-5-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-12-19qapi: Use QAPI_LIST_PREPEND() where possibleEric Blake
Anywhere we create a list of just one item or by prepending items (typically because order doesn't matter), we can use QAPI_LIST_PREPEND(). But places where we must keep the list in order by appending remain open-coded until later patches. Note that as a side effect, this also performs a cleanup of two minor issues in qga/commands-posix.c: the old code was performing new = g_malloc0(sizeof(*ret)); which 1) is confusing because you have to verify whether 'new' and 'ret' are variables with the same type, and 2) would conflict with C++ compilation (not an actual problem for this file, but makes copy-and-paste harder). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20201113011340.463563-5-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> [Straightforward conflicts due to commit a8aa94b5f8 "qga: update schema for guest-get-disks 'dependents' field" and commit a10b453a52 "target/mips: Move mips_cpu_add_definition() from helper.c to cpu.c" resolved. Commit message tweaked.] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-12-10qga: Tweak a guest-shutdown error messageMarkus Armbruster
Change Parameter 'mode' expects halt|powerdown|reboot to Parameter 'mode' expects 'halt', 'powerdown', or 'reboot' for consistency with similar error messages elsewhere. Cc: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201113082626.2725812-9-armbru@redhat.com>
2020-12-10qga: Replace an unreachable error by abort()Markus Armbruster
check_suspend_mode()'s error message Parameter 'mode' expects GuestSuspendMode makes no sense to users: GuestSuspendMode is a C enum. Fortunately, it is unreachable. Replace it by abort(). Cc: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201113082626.2725812-8-armbru@redhat.com>
2020-11-02qga: add implementation of guest-get-disks for WindowsTomáš Golembiovský
The command lists all the physical disk drives. Unlike for Linux partitions and virtual volumes are not listed. Example output: { "return": [ { "name": "\\\\.\\PhysicalDrive0", "partition": false, "address": { "serial": "QM00001", "bus-type": "sata", ... }, "dependents": [] } ] } Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2020-11-02qga: add command guest-get-disksTomáš Golembiovský
Add API and stubs for new guest-get-disks command. The command guest-get-fsinfo can be used to list information about disks and partitions but it is limited only to mounted disks with filesystem. This new command should allow listing information about disks of the VM regardles whether they are mounted or not. This can be usefull for management applications for mapping virtualized devices or pass-through devices to device names in the guest OS. Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2020-11-02qga: Flatten simple union GuestDeviceIdMarkus Armbruster
Simple unions are simpler than flat unions in the schema, but more complicated in C and on the QMP wire: there's extra indirection in C and extra nesting on the wire, both pointless. They should be avoided in new code. GuestDeviceId was recently added for guest-get-devices. Convert it to a flat union. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2020-11-02qga-win: Fix guest-get-devices error API violationsMarkus Armbruster
The Error ** argument must be NULL, &error_abort, &error_fatal, or a pointer to a variable containing NULL. Passing an argument of the latter kind twice without clearing it in between is wrong: if the first call sets an error, it no longer points to NULL for the second call. qmp_guest_get_devices() is wrong that way: it calls error_setg() in a loop. If no iteration fails, the function returns a value and sets no error. Okay. If exactly one iteration fails, the function returns a value and sets an error. Wrong. If multiple iterations fail, the function trips error_setv()'s assertion. Fix it to return immediately on error. Perhaps the failure to convert the driver version to UTF-8 should not be an error. We could simply not report the botched version string instead. Drop a superfluous continue while there. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2020-11-02qga: Use common time encoding for guest-get-devices 'driver-date'Markus Armbruster
guest-get-devices returns 'driver-date' as string in the format YYYY-MM-DD. Goes back to recent commit 2e4211cee4 "qga: add command guest-get-devices for reporting VirtIO devices". We should avoid use of multiple encodings for the same kind of data. Especially string encodings. Change it to return nanoseconds since the epoch, like guest-get-time does. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2020-11-02qga: Rename guest-get-devices return member 'address' to 'id'Markus Armbruster
Member 'address' is union GuestDeviceAddress with a single branch GuestDeviceAddressPCI, containing PCI vendor ID and device ID. This is not a PCI address. Type GuestPCIAddress is. Messed up in recent commit 2e4211cee4 "qga: add command guest-get-devices for reporting VirtIO devices". Rename type GuestDeviceAddressPCI to GuestDeviceIdPCI, type GuestDeviceAddress to GuestDeviceId, and member 'address' to 'id'. Document the member properly while there. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com>
2020-09-16qga/commands-win32: Fix problem with redundant protype declarationThomas Huth
When compiling QEMU with MSYS2 on Windows, there is currently the following error: ../qga/commands-win32.c:62:24: error: redundant redeclaration of 'CM_Get_DevNode_PropertyW' [-Werror=redundant-decls] 62 | CMAPI CONFIGRET WINAPI CM_Get_DevNode_PropertyW( | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from ../qga/commands-win32.c:26: C:/tools/msys64/mingw64/x86_64-w64-mingw32/include/cfgmgr32.h:840:26: note: previous declaration of 'CM_Get_DevNode_PropertyW' was here 840 | CMAPI CONFIGRET WINAPI CM_Get_DevNode_PropertyW(DEVINST dnDevInst, const DEVPROPKEY *PropertyKey, DEVPROPTYPE *PropertyType, PBYTE PropertyBuffer, PULONG PropertyBufferSize, ULONG ulFlags); Seems like this protype is sometimes available in the cfgmgr32.h header, and sometimes not. Let's silence the compiler warning here to let the build pass with -Werror, too. Message-Id: <20200915114757.55635-1-thuth@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-09-12qga: add command guest-get-devices for reporting VirtIO devicesTomáš Golembiovský
Add command for reporting devices on Windows guest. The intent is not so much to report the devices but more importantly the driver (and its version) that is assigned to the device. This gives caller the information whether VirtIO drivers are installed and/or whether inadequate driver is used on a device (e.g. QXL device with base VGA driver). Example: [ { "driver-date": "2019-08-12", "driver-name": "Red Hat VirtIO SCSI controller", "driver-version": "100.80.104.17300", "address": { "type": "pci", "data": { "device-id": 4162, "vendor-id": 6900 } } }, ... ] Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> *remove redundant glib autoptr declaration for GuestDeviceInfo Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2020-07-27qga-win: fix "guest-get-fsinfo" wrong filesystem typeBasil Salman
This patch handles the case where unmounted volumes exist, where in that case GetVolumePathNamesForVolumeName returns empty path, GetVolumeInformation will use the current working directory instead. This patch fixes the issue by opening a handle to the volumes, and using GetVolumeInformationByHandleW instead. Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1746667 Signed-off-by: Basil Salman <bsalman@redhat.com> Signed-off-by: Basil Salman <basil@daynix.com> *fix crash when guest_build_fsinfo() sets errp multiple times *make new error message more distinct from existing ones Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2020-07-10error: Eliminate error_propagate() with Coccinelle, part 1Markus Armbruster
When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. Convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... return ... } to if (!foo(..., errp)) { ... ... return ... } where nothing else needs @err. Coccinelle script: @rule1 forall@ identifier fun, err, errp, lbl; expression list args, args2; binary operator op; constant c1, c2; symbol false; @@ if ( ( - fun(args, &err, args2) + fun(args, errp, args2) | - !fun(args, &err, args2) + !fun(args, errp, args2) | - fun(args, &err, args2) op c1 + fun(args, errp, args2) op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; ) } @rule2 forall@ identifier fun, err, errp, lbl; expression list args, args2; expression var; binary operator op; constant c1, c2; symbol false; @@ - var = fun(args, &err, args2); + var = fun(args, errp, args2); ... when != err if ( ( var | !var | var op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; | return var; ) } @depends on rule1 || rule2@ identifier err; @@ - Error *err = NULL; ... when != err Not exactly elegant, I'm afraid. The "when != lbl:" is necessary to avoid transforming if (fun(args, &err)) { goto out } ... out: error_propagate(errp, err); even though other paths to label out still need the error_propagate(). For an actual example, see sclp_realize(). Without the "when strict", Coccinelle transforms vfio_msix_setup(), incorrectly. I don't know what exactly "when strict" does, only that it helps here. The match of return is narrower than what I want, but I can't figure out how to express "return where the operand doesn't use @err". For an example where it's too narrow, see vfio_intx_enable(). Silently fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Converted manually. Line breaks tidied up manually. One nested declaration of @local_err deleted manually. Preexisting unwanted blank line dropped in hw/riscv/sifive_e.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-10error: Avoid unnecessary error_propagate() after error_setg()Markus Armbruster
Replace error_setg(&err, ...); error_propagate(errp, err); by error_setg(errp, ...); Related pattern: if (...) { error_setg(&err, ...); goto out; } ... out: error_propagate(errp, err); return; When all paths to label out are that way, replace by if (...) { error_setg(errp, ...); return; } and delete the label along with the error_propagate(). When we have at most one other path that actually needs to propagate, and maybe one at the end that where propagation is unnecessary, e.g. foo(..., &err); if (err) { goto out; } ... bar(..., &err); out: error_propagate(errp, err); return; move the error_propagate() to where it's needed, like if (...) { foo(..., &err); error_propagate(errp, err); return; } ... bar(..., errp); return; and transform the error_setg() as above. In some places, the transformation results in obviously unnecessary error_propagate(). The next few commits will eliminate them. Bonus: the elimination of gotos will make later patches in this series easier to review. Candidates for conversion tracked down with this Coccinelle script: @@ identifier err, errp; expression list args; @@ - error_setg(&err, args); + error_setg(errp, args); ... when != err error_propagate(errp, err); Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-34-armbru@redhat.com>
2020-04-29qga: Fix qmp_guest_suspend_{disk, ram}() error handlingMarkus Armbruster
The Error ** argument must be NULL, &error_abort, &error_fatal, or a pointer to a variable containing NULL. Passing an argument of the latter kind twice without clearing it in between is wrong: if the first call sets an error, it no longer points to NULL for the second qmp_guest_suspend_disk() and qmp_guest_suspend_ram() pass @local_err first to check_suspend_mode(), then to acquire_privilege(), then to execute_async(). Continuing after errors here can only end in tears. For instance, we risk tripping error_setv()'s assertion. Fixes: aa59637ea1c6a4c83430933f9c44c43e6c3f1b69 Fixes: f54603b6aa765514b2519e74114a2f417759d727 Cc: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20200422130719.28225-15-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-04-15qga: Extract qmp_guest_file_read() to common commands.cPhilippe Mathieu-Daudé
Extract the common code shared by both POSIX/Win32 implementations. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2020-04-15qga: Extract guest_file_handle_find() to commands-common.hPhilippe Mathieu-Daudé
As we are going to reuse this method, declare it in common header. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2020-04-15Revert "prevent crash when executing guest-file-read with large count"Philippe Mathieu-Daudé
As noted by Daniel Berrangé in [*], the fix from commit 807e2b6fce which replaced malloc() by try_malloc() is not enough, the process can still run out of memory a few line later: 346 buf = g_try_malloc0(count + 1); 347 if (!buf) { 348 error_setg(errp, 349 "failed to allocate sufficient memory " 350 "to complete the requested service"); 351 return NULL; 352 } 353 is_ok = ReadFile(fh, buf, count, &read_count, NULL); 354 if (!is_ok) { 355 error_setg_win32(errp, GetLastError(), "failed to read file"); 356 slog("guest-file-read failed, handle %" PRId64, handle); 357 } else { 358 buf[read_count] = 0; 359 read_data = g_new0(GuestFileRead, 1); ^^^^^^ Instead we are going to put a low hard limit on 'count' in the next commits. This reverts commit 807e2b6fce022707418bc8f61c069d91c613b3d2. [*] https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg03471.html Suggested-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2020-03-24qga-win: prevent crash when executing guest-file-read with large countBasil Salman
guest-file-read command is currently implemented to read from a file handle count number of bytes. when executed with a very large count number qemu-ga crashes. after some digging turns out that qemu-ga crashes after trying to allocate a buffer large enough to save the data read in it, the buffer was allocated using g_malloc0 which is not fail safe, and results a crash in case of failure. g_malloc0 was replaced with g_try_malloc0() which returns NULL on failure, A check was added for that case in order to prevent qemu-ga from crashing and to send a response to the qemu-ga client accordingly. Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1594054 Signed-off-by: Basil Salman <basil@daynix.com> Reported-by: Fakhri Zulkifli <mohdfakhrizulkifli@gmail.com> Cc: qemu-stable@nongnu.org Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2020-03-09qga: Improve error report by calling error_setg_win32()Philippe Mathieu-Daudé
Use error_setg_win32() which adds a hint similar to strerror(errno)). Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200228100726.8414-4-philmd@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2019-12-18qga: rename Error ** parameter to more common errpVladimir Sementsov-Ogievskiy
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20191205174635.18758-13-vsementsov@virtuozzo.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2019-11-04qga: Add "guest-get-memory-block-info" to blacklistBasil Salman
Memory block commands are only supported for linux with sysfs, "guest-get-memory-block-info" was not in blacklist for other cases. Reported on: https://bugzilla.redhat.com/show_bug.cgi?id=1751431 Signed-off-by: Basil Salman <bsalman@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2019-11-04qga-win: network-get-interfaces command name field bug fixBishara AbuHattoum
Network interface name is fetched as an encoded WCHAR array, (wide character), then it is decoded using the guest's CP_ACP Windows code page, which is the default code page as configure in the guest's Windows, then it is returned as a byte array, (char array). As stated in the BZ#1733165, when renaming a network interface to a Chinese name and invoking this command, the returned name field has the (\ufffd) value for each Chinese character the name had, this value is an indication that the code page does not have the decoding information for the given character. This bug is a result of using the CP_ACP code page for decoding which is an interchangeable code page, instead CP_UTF8 code page should be used for decoding the network interface's name. https://bugzilla.redhat.com/show_bug.cgi?id=1733165 Signed-off-by: Bishara AbuHattoum <bishara@daynix.com> Cc: qemu-stable@nongnu.org Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2019-05-07qga: Fix mingw compilation warnings on enum conversionCao Jiaxi
The win2qemu[] is supposed to be the conversion table to convert between STORAGE_BUS_TYPE in Windows SDK and GuestDiskBusType in qga. But it was incorrectly written that it forces to set a GuestDiskBusType value to STORAGE_BUS_TYPE, which generates an enum conversion warning in clang. Suggested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Cao Jiaxi <driver1998@foxmail.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 20190503003650.10137-1-driver1998@foxmail.com Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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