744 Commits

Author SHA1 Message Date
Kostiantyn Kostiuk
fe487bc5a7 qga/vss: Drop unused define uuid(x)
There is no place in code where we use uuid(x), at the same time
MSVC vss.h use it and this define broke compilation.

Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/r/20260330113906.168002-8-kkostiuk@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2026-06-17 15:15:43 +02:00
Kostiantyn Kostiuk
148afda56c qga/vss: Remove unused undefs
We don't include any headers that provides VSS_E*, so
no need to undefine it before including vss.h

Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/r/20260330113906.168002-7-kkostiuk@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2026-06-17 15:15:43 +02:00
Kostiantyn Kostiuk
ded6afdedd qga/vss: Use MAX_PATH instead of PATH_MAX
MAX_PATH defined in windows.h
This is more correct way for Windows.

Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/r/20260330113906.168002-6-kkostiuk@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2026-06-17 15:15:43 +02:00
Kostiantyn Kostiuk
4f7924e116 qga/meson: Allow to use MSVC message compiler 'mc'
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/r/20260330113906.168002-5-kkostiuk@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2026-06-17 15:15:43 +02:00
Kostiantyn Kostiuk
dbf0fcef7e qga/meson: Use windows.compile_resources instead of custom_target
windows.compile_resources supports more compiles and works
in both MinGW and MSVC environment. While 'windres' is a
MinGW specific tool.

Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/r/20260330113906.168002-4-kkostiuk@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2026-06-17 15:15:43 +02:00
Kostiantyn Kostiuk
a2f3d1405a qga/meson: Remove unused lib stdc++
qga_libs are libraries for guest agent linking. Guest Agent
is a pure C-language application and doesn't need any C++ libs.
VSS linking dependencies are placed in a separate file.

Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/r/20260330113906.168002-3-kkostiuk@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2026-06-17 15:15:43 +02:00
Kostiantyn Kostiuk
f2a468d39e qga/win: Use swprintf instead of snwprintf
snwprintf is a Microsoft extension, and according to the MSVC spec,
it is called _snwprintf. MinGW defines both snwprintf and _snwprintf,
while MSVC defines only _snwprintf.

We can also use swprintf here. The only difference between
the two is the return value, and we are not using it. So change
the function to support MSVC build env.

Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/r/20260330113906.168002-2-kkostiuk@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2026-06-17 15:15:43 +02:00
Elizabeth Ashurov
374f467678 qga: Fix VSS provider GetSnapshotProperties return value
GetSnapshotProperties() returned VSS_E_OBJECT_NOT_FOUND causing
"Snapshot id not found" errors during VSS operations.

Any error in this function causes a similar error in Windows VSS,
so we must return S_OK there.

Signed-off-by: Elizabeth Ashurov <eashurov@redhat.com>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20260211101744.757548-2-eashurov@redhat.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2026-02-18 11:27:57 +02:00
Elizabeth Ashurov
0257ec9905 qga: Move CoInitialize/CoInitializeSecurity to main process thread
Problem:
Two issues with COM initialization:

Issue #1: Incorrect call order
- requester_init() called CoInitializeSecurity first
- Per Microsoft documentation, CoInitialize() must be called BEFORE
  CoInitializeSecurity()

Issue #2: Incorrect call location
- CoInitializeSecurity was called from dll instead of the main process
- Per Microsoft documentation, CoInitializeSecurity() must be called exactly once per process from
  the main executable, not from a DLL

Reference:
https://learn.microsoft.com/en-us/windows/win32/api/combaseapi/nf-combaseapi-coinitializesecurity
https://learn.microsoft.com/en-us/windows/win32/api/objbase/nf-objbase-coinitialize

This caused incorrect COM initialization, preventing VSS Writers from
calling back via IVssWriterCallback (hr = 0x80070005, Access denied,
Event ID 8194).

Fix:
- Initialize COM in main.c for both service and CLI modes
- Call CoInitialize() followed by CoInitializeSecurity() in correct order
  in the main thread before any VSS operations
- Add proper CoUninitialize() cleanup

Result:
VSS Writers can now successfully call back to the agent. Event ID 8194
error is resolved.

Signed-off-by: Elizabeth Ashurov <eashurov@redhat.com>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Tested-by: Dehan Meng <demeng@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20260211101744.757548-1-eashurov@redhat.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2026-02-18 11:27:57 +02:00
Elizabeth Ashurov
595a77289d qga: implement guest-network-get-route for Windows
Add Windows implementation of guest-network-get-route command to provide
network routing information on Windows guests.

Features implemented:
- IPv4 and IPv6 route information retrieval using GetIpForwardTable2
- Human-readable interface names via GetAdaptersAddresses
- Proper route metrics combining route and interface metrics
- MTU information for network interfaces
- Support for destination, gateway, mask, and metric fields for IPv4
- Support for destination, nexthop, and desprefixlen fields for IPv6

Implementation uses modern Windows IP Helper API (GetIpForwardTable2,
GetIfEntry2).

Signed-off-by: Elizabeth Ashurov <eashurov@redhat.com>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20251222144031.3115317-1-eashurov@redhat.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2026-02-18 11:27:55 +02:00
Pierrick Bouvier
79762f55ef qga/vss-win32: fix clang warning with C++20
C++20 deprecated such constructs.

../qga/vss-win32/requester.cpp:380:32: error: bitwise operation between different enumeration types ('_VSS_SNAPSHOT_CONTEXT' and '_VSS_VOLUME_SNAPSHOT_ATTRIBUTES') is deprecated [-Werror,-Wdeprecated-enum-enum-conversion]
  380 |     ctx = VSS_CTX_APP_ROLLBACK | VSS_VOLSNAP_ATTR_TRANSPORTABLE |

This is a false positive, since VSS_CTX_APP_ROLLBACK is not a value
defined in _VSS_VOLUME_SNAPSHOT_ATTRIBUTES enum.

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Link: https://lore.kernel.org/qemu-devel/20260124182921.531562-10-pierrick.bouvier@linaro.org
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
2026-01-29 09:34:14 -08:00
Richard Henderson
9c4c090d27 Merge tag 'pull-target-arm-20260123' of https://gitlab.com/pm215/qemu into staging
target-arm queue:
 * hw/arm/imx8mp-evk: Provide some defaults matching real hardware
 * hw/intc: endianness fixes
 * various: Clean up includes
 * kernel-doc.py: sync with upstream Kernel v6.19-rc4
 * scripts/clean-includes: Minor improvements; exclude list update
 * docs/system/arm/imx8mp-evk: Avoid suggesting redundant CLI parameters
 * docs/system/arm/xlnx-zynq.rst: Improve docs rendering
 * docs: Be consistent about capitalization of 'Arm' (again)
 * docs: Avoid unintended mailto: hyperlinks
 * qemu-options.hx: Drop uses of @var
 * qemu-options.hx: Improve formatting in colo-compare docs

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* tag 'pull-target-arm-20260123' of https://gitlab.com/pm215/qemu: (22 commits)
  qemu-options.hx: Improve formatting in colo-compare docs
  qemu-options.hx: Drop uses of @var
  docs: avoid unintended mailto: hyperlinks
  docs/system/arm/xlnx-zynq.rst: Improve docs rendering
  hw/intc: avoid byte swap fiddling in gicv3 its path
  hw/intc: declare GICv3 regions as little endian
  hw/intc: declare GIC regions as little endian
  hw/intc: declare NVIC regions as little endian
  all: Clean up includes
  misc: Clean up includes
  bsd-user: Clean up includes
  mshv: Clean up includes
  scripts/clean-includes: Update exclude list
  scripts/clean-includes: Give the args in git commit messages
  scripts/clean-includes: Do all our exclusions with REGEXFILE
  scripts/clean-includes: Make ignore-regexes one per line
  scripts/clean-includes: Remove outdated comment
  scripts/clean-includes: Allow directories on command line
  docs: Be consistent about capitalization of 'Arm' (again)
  kernel-doc.py: sync with upstream Kernel v6.19-rc4
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2026-01-24 07:59:34 +11:00
Peter Maydell
75f48413bb all: Clean up includes
This commit was created with scripts/clean-includes:
 ./scripts/clean-includes '--git' 'all' '--all'

and manually edited to remove one change to hw/virtio/cbor-helpers.c.
All these changes are header files that include osdep.h or some
system header that osdep.h pulls in; they don't need to do this.

All .c should include qemu/osdep.h first.  The script performs three
related cleanups:

* Ensure .c files include qemu/osdep.h first.
* Including it in a .h is redundant, since the .c  already includes
  it.  Drop such inclusions.
* Likewise, including headers qemu/osdep.h includes is redundant.
  Drop these, too.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20260116125830.926296-5-peter.maydell@linaro.org
2026-01-22 11:23:31 +00:00
Philippe Mathieu-Daudé
3115691855 bswap: Include missing 'qemu/bswap.h' header
All these files indirectly include the "qemu/bswap.h" header.
Make this inclusion explicit to avoid build errors when
refactoring unrelated headers.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20260109164742.58041-4-philmd@linaro.org>
2026-01-22 10:48:45 +01:00
Markus Armbruster
3ec3397098 qga/commands-win32: Use error_setg_win32() for better error messages
We include numeric GetLastError() codes in error messages in a few
places, like this:

    error_setg(errp, "GRIPE: %d", (int)GetLastError());

Show text instead, like this:

    error_setg_win32(errp, GetLastError(), "GRIPE");

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20251121121438.1249498-15-armbru@redhat.com>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2026-01-08 07:50:32 +01:00
Markus Armbruster
0223e79287 error: Use error_setg_errno() for simplicity and consistency
Use error_setg_errno() instead of passing the value of strerror() or
g_strerror() to error_setg().

The separator between the error message proper and the value of
strerror() changes from " : ", "", " - ", "- " to ": " in places.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20251121121438.1249498-14-armbru@redhat.com>
Acked-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2026-01-08 07:50:32 +01:00
Markus Armbruster
578988e684 qga: Use error_setg_file_open() for better error messages
Error messages change from

    open("FNAME"): REASON

to

    Could not open 'FNAME': REASON

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dave@treblig.org>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Message-ID: <20251121121438.1249498-6-armbru@redhat.com>
2026-01-07 11:26:57 +01:00
Nguyen Dinh Phi
c1df49269a qga/vss-win32: Fix ConvertStringToBSTR redefinition with newer MinGW
Newer versions of MinGW-w64 provide ConvertStringToBSTR() in the
_com_util namespace via <comutil.h>. This causes a redefinition
error when building qemu-ga on Windows with these toolchains.

Add a meson check to detect whether ConvertStringToBSTR is already
available, and conditionally compile our fallback implementation
only when the system does not provide one.

Signed-off-by: Nguyen Dinh Phi <phind.uet@gmail.com>
Suggested-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Message-ID: <20251218085446.462827-2-phind.uet@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2025-12-30 20:38:41 +01:00
Cédric Le Goater
326e620fc0 Fix const qualifier build errors with recent glibc
A recent change in glibc 2.42.9000 [1] changes the return type of
strstr() and other string functions to be 'const char *' when the
input is a 'const char *'.

This breaks the build in various files with errors such as :

  error: initialization discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
    208 |         char *pidstr = strstr(filename, "%");
        |                        ^~~~~~

Fix this by changing the type of the variables that store the result
of these functions to 'const char *'.

[1] https://sourceware.org/git/?p=glibc.git;a=commit;h=cd748a63ab1a7ae846175c532a3daab341c62690

Signed-off-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20251209174328.698774-1-clg@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2025-12-09 21:00:15 +01:00
Michael Tokarev
bba249a256 qga: use access(2) to check for command existance instead of questionable stat(2)
The code checks existance of a command (halt/poweroff/reboot) by using
stat(2) and immediately checking for S_ISLNK() on the returned stat
struct.  This check will never be true, because stat(2) always follows
symbolic links and hence will either return ENOENT (in case of dangling
symlink) or the properties for the final target file.  It is lstat(2)
which might return information about the symlink itself.  However, even
there, we want to check the final file properties, not the first symlink.

This check - S_ISLNK - is harmful but useless in this case.  However, it
is confusing and it helps the wrong usage of stat(2) to spread, so it is
better to remove it.

Additionally, the code would better to check for the executable bits
of the final file, not check if it's a regular file - it's sort of
dubious to have anything but regular files in /sbin/.

But a POSIX system provides another command which suits the purpose
perfectly: it is access(2).  And it is so simple that it's not
necessary to create a separate function when usin it.

Replace stat(2) with access(X_OK) to check for file existance in
qga/commands-posix.c

Fixes: c5b4afd4d5 "qga: Support guest shutdown of BusyBox-based systems"
Reviewed-by: Rodrigo Dias Correa <r@drigo.nl>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2025-11-21 15:47:58 +03:00
Philippe Mathieu-Daudé
d3bc229c79 qga/commands: Include proper Solaris header for getloadavg()
Solaris declares getloadavg() in <sys/loadavg.h>:

    getloadavg(3C)       Standard C Library Functions       getloadavg(3C)

    NAME
           getloadavg - get system load averages

    SYNOPSIS
           #include <sys/loadavg.h>

           int getloadavg(double loadavg[], int nelem);

    [...]

    Oracle Solaris 11.4           23 Jul 2020               getloadavg(3C)

Include it in order to avoid:

  ../qga/commands-posix.c: In function 'qmp_guest_get_load':
  ../qga/commands-posix.c:1408:9: error: implicit declaration of function 'getloadavg' [-Wimplicit-function-declaration]
   1408 |     if (getloadavg(loadavg, G_N_ELEMENTS(loadavg)) < 0) {
      |         ^~~~~~~~~~
  ../qga/commands-posix.c:1408:9: warning: nested extern declaration of 'getloadavg' [-Wnested-externs]

../configure relevant output:

  C compiler for the host machine: gcc (gcc 14.2.0 "gcc (GCC) 14.2.0")
  C linker for the host machine: gcc ld.solaris 5.11-1.3315

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20251117203834.83713-2-philmd@linaro.org>
2025-11-18 19:59:36 +01:00
Markus Armbruster
4a0cb75b31 qga/qapi-schema: Clean up whitespace between definitions
Consistently separate definitions with a single blank line.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-ID: <20251103082354.3273027-6-armbru@redhat.com>
2025-11-04 13:34:42 +01:00
Markus Armbruster
e67b5099b4 qga/qapi-schema: Refill doc comments to conform to conventions
Sweep the entire documentation again.  Last done in commit
7270819384 (qga/qapi-schema: Refill doc comments to conform to
current conventions).

To check the generated documentation does not change, I compared the
generated HTML before and after this commit with "wdiff -3".  Finds no
differences.  Comparing with diff is not useful, as the reflown
paragraphs are visible there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-ID: <20251103082354.3273027-5-armbru@redhat.com>
2025-11-04 13:34:42 +01:00
Rodrigo Dias Correa
c5b4afd4d5 qga: Support guest shutdown of BusyBox-based systems
On POSIX systems, the QEMU Guest Agent uses /sbin/shutdown to implement
the command guest-shutdown. Systems based on BusyBox, such as Alpine
Linux, don't have /sbin/shutdown. They have instead three separate
commands: poweroff, reboot, and halt.

Change the QEMU Guest Agent to, depending on the mode argument, use
/sbin/{poweroff,halt,reboot} when they exist, falling back to
/sbin/shutdown when they don't.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2589

Signed-off-by: Rodrigo Dias Correa <r@drigo.nl>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250926214015.120338-1-r@drigo.nl
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-10-30 14:52:57 +02:00
minglei.liu
c741c087b8 qga: Improve Windows filesystem space info retrieval logic
Previously, disk space reporting only worked for volumes with drive letters,
skipping those without (e.g. System Reserved).

This change always calls GetDiskFreeSpaceEx with fs->name, which is a
volume GUID path. Windows APIs accept both drive letters (e.g. "C:\")
and volume GUIDs (e.g. "\\?\Volume{GUID}\") as valid lpDirectoryName
parameters, so space reporting is now consistent across all volumes.

Reference:
https://learn.microsoft.com/en-us/windows/win32/fileio/naming-a-file

Signed-off-by: minglei.liu <minglei.liu@smartx.com>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250923113243.78244-1-minglei.liu@smartx.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-10-30 14:52:17 +02:00
Vladimir Sementsov-Ogievskiy
6f607941b1 treewide: use qemu_set_blocking instead of g_unix_set_fd_nonblocking
Instead of open-coded g_unix_set_fd_nonblocking() calls, use
QEMU wrapper qemu_set_blocking().

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
[DB: fix missing closing ) in tap-bsd.c, remove now unused GError var]
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2025-09-19 12:46:07 +01:00
Vladimir Sementsov-Ogievskiy
8cb17f9c36 util: drop qemu_socket_set_nonblock()
Use common qemu_set_blocking() instead.

Note that pre-patch the behavior of Win32 and Linux realizations
are inconsistent: we ignore failure for Win32, and assert success
for Linux.

How do we convert the callers?

1. Most of callers call qemu_socket_set_nonblock() on a
freshly created socket fd, in conditions when we may simply
report an error. Seems correct switching to error handling
both for Windows (pre-patch error is ignored) and Linux
(pre-patch we assert success). Anyway, we normally don't
expect errors in these cases.

Still in tests let's use &error_abort for simplicity.

What are exclusions?

2. hw/virtio/vhost-user.c - we are inside #ifdef CONFIG_LINUX,
so no damage in switching to error handling from assertion.

3. io/channel-socket.c: here we convert both old calls to
qemu_socket_set_nonblock() and qemu_socket_set_block() to
one new call. Pre-patch we assert success for Linux in
qemu_socket_set_nonblock(), and ignore all other errors here.
So, for Windows switch is a bit dangerous: we may get
new errors or crashes(when error_abort is passed) in
cases where we have silently ignored the error before
(was it correct in all such cases, if they were?) Still,
there is no other way to stricter API than take
this risk.

4. util/vhost-user-server - compiled only for Linux (see
util/meson.build), so we are safe, switching from assertion to
&error_abort.

Note: In qga/channel-posix.c we use g_warning(), where g_printerr()
would actually be a better choice. Still let's for now follow
common style of qga, where g_warning() is commonly used to print
such messages, and no call to g_printerr(). Converting everything
to use g_printerr() should better be another series.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2025-09-19 12:46:07 +01:00
minglei.liu
28c5d27dd4 qga: Fix truncated output handling in guest-exec status reporting
Signed-off-by: minglei.liu <minglei.liu@smartx.com>
Fixes: a1853dca74
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250711021714.91258-1-minglei.liu@smartx.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-09-01 14:02:18 +03:00
Kostiantyn Kostiuk
85ff0e956b qga/installer: Remove QGA VSS if QGA installation failed
When QGA Installer failed to install QGA service but install
QGA VSS provider, provider should be removed before installer
exits. Otherwise QGA VSS will has broken infomation and
prevent QGA installation in next run.

Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250825143155.160913-1-kkostiuk@redhat.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-09-01 14:02:18 +03:00
Kostiantyn Kostiuk
edf3780a7d qga-vss: Write hex value of error in log
QGA-VSS writes error using error_setg_win32_internal,
which call g_win32_error_message.

g_win32_error_message - translate a Win32 error code
(as returned by GetLastError()) into the corresponding message.

In the same time, we call error_setg_win32_internal with
error codes from different Windows componets like VSS or
Performance monitor that provides different codes and
can't be converted with g_win32_error_message. In this
case, the empty suffix will be returned so error will be
masked.

This commit directly add hex value of error code.

Reproduce:
 - Run QGA command: {"execute": "guest-fsfreeze-freeze-list", "arguments": {"mountpoints": ["D:"]}}

QGA error example:
 - before changes:
  {"error": {"class": "GenericError", "desc": "failed to add D: to snapshot set: "}}
 - after changes:
  {"error": {"class": "GenericError", "desc": "failed to add D: to snapshot set: Windows error 0x8004230e: "}}

Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250825135311.138330-1-kkostiuk@redhat.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-09-01 14:02:18 +03:00
Kostiantyn Kostiuk
b44c8a6d83 qga: ignore channel_init() fail if 'retry_path' is set
On Windows, we run QGA with `-d --retry-path` options by default,
and expect that QGA will start even without the vioserial driver
and will wait for communication forever.

Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250825140549.146617-3-kkostiuk@redhat.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-09-01 14:02:18 +03:00
Kostiantyn Kostiuk
3b0ba59762 qga: Fix channel initialization check in run_agent_once
Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250825140549.146617-2-kkostiuk@redhat.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-09-01 14:02:18 +03:00
Kostiantyn Kostiuk
ed42682a66 qga-vss: Remove unused dependencies
Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250825145241.170717-3-kkostiuk@redhat.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-09-01 14:02:18 +03:00
Kostiantyn Kostiuk
9646155bb0 qga-vss: Replace asserts with condition and report error
Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250825145241.170717-2-kkostiuk@redhat.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-09-01 14:02:18 +03:00
Denis V. Lunev
42bdb911c2 qga: fix potentially not initialized nr_volumes in qga_vss_fsfreeze()
In this function we could have this variable not initialized. If this
could be acceptable on error, the variable could be left not initialized
f.e. as follows:

void requester_freeze(int *num_vols, void *mountpoints, ErrorSet *errset)
{
    ...
    if (mountpoints) {
        ...
        if (num_mount_points == 0) {
            /* If there is no valid mount points, just exit. */
            goto out;
        }
    }
    ...
    if (!mountpoints) {
        ...
        if (num_fixed_drives == 0) {
            goto out; /* If there is no fixed drive, just exit. */
        }
    }
    ...
}

Stay on safe side, initialize the variable at the beginning.

Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Kostiantyn Kostiuk <kkostiuk@redhat.com>
CC: Michael Roth <michael.roth@amd.com>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250807133221.1135453-1-den@openvz.org
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-09-01 14:02:18 +03:00
Thomas Huth
83f6dceb8f qga: Fix ubsan warning
When compiling QEMU with --enable-ubsan there is a undefined behavior
warning when running "make check":

 .../qga/commands-linux.c:452:15: runtime error: applying non-zero offset 5 to null pointer
 #0 0x55ea7b89450c in build_guest_fsinfo_for_pci_dev ..../qga/commands-linux.c:452:15

Fix it by avoiding the additional pointer variable here and use an
"offset" integer variable instead.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250730072709.27077-1-thuth@redhat.com
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-09-01 14:02:18 +03:00
Michael Tokarev
b217d987a3 qga: correctly write to /sys/power/state on linux
Commit v9.0.0-343-g2048129625 introduced usage of
g_file_set_contents() function to write to /sys/power/state.
This function uses G_FILE_SET_CONTENTS_CONSISTENT flag to
g_file_set_contents_full(), which is implemented by creating
a temp file in the same directory and renaming it to the final
destination.  Which is not how sysfs works.

Here, there's not a big deal to do open/write/close - it becomes
almost the same as using g_file_set_contents[_full]().  But it
does not have surprises like this.

Also, since this is linux code, it should be ok to use %m in
the error reporting function.

Fixes: 2048129625 "qga/commands-posix: don't do fork()/exec() when suspending via sysfs"
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3057
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20250801115316.6845-1-mjt@tls.msk.ru>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-08-05 15:03:08 -04:00
Markus Armbruster
62e1fa22f5 qga: Add cross-references
Enclose command and type names in `backquotes`, so they become links
in generated HTML.

We did this for qapi/ in merge commit 504632dcc6.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20250717115246.3830007-5-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2025-07-28 13:45:21 +02:00
Markus Armbruster
ef7e21964d qga: Rephrase return docs to avoid type name
"Returns: <description>" is rendered like

    Return: <Type> – <description>

Mentioning the type in the description again is commonly redundant.
There is just one such description.  Rephrase it not to mention the
type.

We did this for qapi/ in commit f7296f8de5 (qapi: rephrase return
docs to avoid type name).

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20250717115246.3830007-4-armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2025-07-28 13:45:11 +02:00
Markus Armbruster
d27340ff8a qga: Remove trivial "Returns:" sections
The QAPI doc generator recently started to auto-generate return
documentation when there is no "Returns:" section (commit 636c96cd77
"qapi: Fix undocumented return values by generating something").
Remove "Returns:" sections where the auto-generated text is obviously
no worse.  For instance, guest-info's documentation changes from

    Return:
       GuestAgentInfo -- GuestAgentInfo

to

    Return:
       GuestAgentInfo

The auto-generated returns all are in the exact same spot.

We did this for qapi/ in commit 0462da9d6b (qapi: remove trivial
"Returns:" sections).

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20250717115246.3830007-3-armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2025-07-28 13:44:59 +02:00
Markus Armbruster
bb743978f0 qga: Fix guest-network-get-route return value documentation
Tagged sections are only recognized at the beginning of a paragraph.
guest-network-get-route's Returns: isn't, and therefore gets rendered
as ordinary text within its paragraph:

    Retrieve information about route of network. Returns: List of route
    info of guest.

Since there is no (recognized) Returns: section, the doc generator
adds

    Return:
       [GuestNetworkRoute]

Note: only since recent commit 636c96cd77 (qapi: Fix undocumented
return values by generating something).

Insert the required blank line so that Returns: is recognized.
Result:

    Retrieve information about route of network.

    Return:
       [GuestNetworkRoute] -- List of route info of guest.

Fixes: commit 8e326d36dd (qga/linux: Add new api 'guest-network-get-route')
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20250717115246.3830007-2-armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2025-07-28 13:44:44 +02:00
Elizabeth Ashurov
1c90e89e64 qga/vss-win32: Add VSS provider unregistration retry
This commit improves the QGA VSS provider installation flow by attempting to unregister the VSS provider if it's already
found during installation. This allows for a retry of installation even if a previous unregistration failed or was not performed.
This will prevent inconsistencies between QGA and QGA-VSS versions.
Before this commit, QGA can use QGA-VSS from the previous installation.

Signed-off-by: Elizabeth Ashurov <eashurov@redhat.com>
Reviewed-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Message-ID: <20250618091806.170110-1-eashurov@redhat.com>
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-06-30 13:17:10 +03:00
Kostiantyn Kostiuk
012bb70cd1 qga-vss: Exit with non-zero code when register fail
QGA installer uses rundll32 to run the DLLCOMRegister function
from qga-vss.dll and perform VSS provider registration.
rundll32 ignores the return value of the function and always
exits with a zero exit code. This causes a situation where
the installer does not know the status of VSS provider registration.

This commit forces to change exit code when the VSS provider
registration fails.

https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/rundll32

Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com>
Tested-by: Dehan Meng <demeng@redhat.com>
Message-ID: <20250620083132.28347-1-kkostiuk@redhat.com>
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
2025-06-30 13:17:10 +03:00
Konstantin Kostiuk
6f0273d6ae qga-win: implement a 'guest-get-load' command
Windows has no native equivalent API, but it would be possible to
simulate it as illustrated here (BSD-3-Clause):

  https://github.com/giampaolo/psutil/pull/1485

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Dehan Meng <demeng@redhat.com>
Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
2025-06-12 17:02:05 +03:00
Markus Armbruster
8a2b516ba2 cleanup: Drop pointless return at end of function
A few functions now end with a label.  The next commit will clean them
up.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250407082643.2310002-3-armbru@redhat.com>
[Straightforward conflict with commit 988ad4cceb (hw/loongarch/virt:
Fix cpuslot::cpu set at last in virt_cpu_plug()) resolved]
2025-04-24 09:33:42 +02:00
Markus Armbruster
8d41a7dfc2 qga/qapi-schema: Add a proper introduction
Contents adapted from qapi/qapi-schema.json.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20250404121413.1743790-12-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2025-04-08 09:04:34 +02:00
John Snow
a6af544344 docs: enable transmogrifier for QSD and QGA
This also creates the `qapi-qsd-index` and `qapi-qga-index` QMP indices.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-ID: <20250313044312.189276-12-jsnow@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2025-03-14 07:32:41 +01:00
Michal Privoznik
c6f5dd7ac8 qga: Don't daemonize before channel is initialized
If the agent is set to daemonize but for whatever reason fails to
init the channel, the error message is lost. Worse, the agent
daemonizes needlessly and returns success. For instance:

  # qemu-ga -m virtio-serial \
            -p /dev/nonexistent_device \
            -f /run/qemu-ga.pid \
            -t /run \
            -d
  # echo $?
  0

This makes it needlessly hard for init scripts to detect a
failure in qemu-ga startup. Though, they shouldn't pass '-d' in
the first place.

Let's open the channel first and only after that become a daemon.

Related bug: https://bugs.gentoo.org/810628

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Message-ID: <7a42b0cbda5c7e01cf76bc1b29a1210cd018fa78.1736261360.git.mprivozn@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
2025-02-26 13:34:25 +02:00
Michal Privoznik
5b567c21c6 qga: Invert logic on return value in main()
Current logic on return value ('ret' variable) in main() is error
prone. The variable is initialized to EXIT_SUCCESS and then set
to EXIT_FAILURE on error paths. This makes it very easy to forget
to set the variable to indicate error when adding new error path,
as is demonstrated by handling of initialize_agent() failure.
It's simply lacking setting of the variable.

There's just one case where success should be indicated: when
dumping the config ('-D' cmd line argument).

To resolve this, initialize the variable to failure value and set
it explicitly to success value in that one specific case.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Message-ID: <8a28265f50177a8dc4c10fcf4146e85a7fd748ee.1736261360.git.mprivozn@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
2025-02-26 13:34:25 +02:00
Konstantin Kostiuk
ad1e684363 qga: Add log to guest-fsfreeze-thaw command
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20241216154552.213961-2-kkostiuk@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
2025-02-26 13:33:39 +02:00