Commit Graph

136 Commits

Author SHA1 Message Date
Markus Armbruster b21e238037 Use g_new() & friends where that makes obvious sense
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>
2022-03-21 15:44:44 +01:00
Marc-André Lureau b7e4ab15c3 meson, configure: move ntddscsi API check to meson
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>
2022-02-21 10:35:54 +01:00
Kostiantyn Kostiuk 206ce9699f qga-win: Detect Windows 11 by build number
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>
2022-01-10 13:05:25 +00:00
Kostiantyn Kostiuk 92857cd738 qga-win: Detect OS based on Windows 10 by first build number
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>
2022-01-10 13:05:04 +00:00
Kostiantyn Kostiuk d919cea07c gqa-win: get_pci_info: Replace 'while' with 2 calls of the function
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>
2022-01-10 13:04:53 +00:00
Kostiantyn Kostiuk 5f22473ebb gqa-win: get_pci_info: Add g_autofree for few 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>
2022-01-10 13:04:47 +00:00
Kostiantyn Kostiuk 7cc354613e gqa-win: get_pci_info: Split logic to separate functions
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>
2022-01-10 13:04:40 +00:00
Kostiantyn Kostiuk c49ca88b55 gqa-win: get_pci_info: Free parent_dev_info properly
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>
2022-01-10 13:04:34 +00:00
Kostiantyn Kostiuk e78ca586d6 gqa-win: get_pci_info: Use common 'end' label
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>
2022-01-10 13:04:23 +00:00
Kostiantyn Kostiuk d0b896a749 gqa-win: get_pci_info: Clean dev_info if handle is valid
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>
2022-01-10 13:03:38 +00:00
Markus Armbruster fff0e451f3 Remove superfluous ERRP_GUARD()
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>
2021-08-26 17:15:28 +02:00
Kostiantyn Kostiuk 24328b7a83 qga-win: Free GMatchInfo properly
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>
2021-08-02 22:11:45 -05:00
Basil Salman ce72f11274 qga-win: Fix handle leak in ga_get_win_product_name()
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>
2021-08-02 22:11:45 -05:00
Basil Salman 02ac3f4b95 qga-win: Fix build_guest_fsinfo() close of nonexistent
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>
2021-08-02 22:11:45 -05:00
Kostiantyn Kostiuk c141814d4f qga-win: Add support of Windows Server 2022 in get-osinfo command
Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
2021-07-12 11:26:47 -05:00
AlexChen 55b53dabb5 qga: Delete redundant spaces
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>
2021-03-16 20:21:47 -05:00
AlexChen 0697e9ed29 qga: Add spaces around operator
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>
2021-03-16 20:20:37 -05:00
Eric Blake 95b3a8c8a8 qapi: More complex uses of QAPI_LIST_APPEND
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>
2021-01-28 08:08:45 +01:00
Eric Blake c3033fd372 qapi: Use QAPI_LIST_APPEND in trivial cases
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>
2021-01-28 08:08:45 +01:00
Eric Blake 54aa3de72e qapi: Use QAPI_LIST_PREPEND() where possible
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>
2020-12-19 10:20:14 +01:00
Markus Armbruster 9fc0ab5c9c qga: Tweak a guest-shutdown error message
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>
2020-12-10 17:16:44 +01:00
Markus Armbruster ac84b0fa28 qga: Replace an unreachable error by abort()
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>
2020-12-10 17:16:44 +01:00
Tomáš Golembiovský c67d2efd9d qga: add implementation of guest-get-disks for Windows
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>
2020-11-02 11:36:16 -06:00
Tomáš Golembiovský c27ea3f9ef qga: add command guest-get-disks
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>
2020-11-02 08:14:36 -06:00
Markus Armbruster 0083124b3a qga: Flatten simple union GuestDeviceId
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>
2020-11-02 08:14:36 -06:00
Markus Armbruster 939caddc2c qga-win: Fix guest-get-devices error API violations
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>
2020-11-02 08:14:36 -06:00
Markus Armbruster a88bceef78 qga: Use common time encoding for guest-get-devices 'driver-date'
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>
2020-11-02 08:14:35 -06:00
Markus Armbruster b519e2e982 qga: Rename guest-get-devices return member 'address' to 'id'
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>
2020-11-02 08:14:35 -06:00
Thomas Huth 37d98abdc7 qga/commands-win32: Fix problem with redundant protype declaration
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>
2020-09-16 08:41:06 +02:00
Tomáš Golembiovský 2e4211cee4 qga: add command guest-get-devices for reporting VirtIO devices
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>
2020-09-12 20:37:48 -05:00
Basil Salman 3aaebc0cce qga-win: fix "guest-get-fsinfo" wrong filesystem type
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>
2020-07-27 18:03:55 -05:00
Markus Armbruster 668f62ec62 error: Eliminate error_propagate() with Coccinelle, part 1
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>
2020-07-10 15:18:08 +02:00
Markus Armbruster dcfe480544 error: Avoid unnecessary error_propagate() after error_setg()
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>
2020-07-10 15:18:08 +02:00
Markus Armbruster 51bd458166 qga: Fix qmp_guest_suspend_{disk, ram}() error handling
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: aa59637ea1
Fixes: f54603b6aa
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>
2020-04-29 08:01:52 +02:00
Philippe Mathieu-Daudé ead83a136d qga: Extract qmp_guest_file_read() to common commands.c
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>
2020-04-15 09:15:53 -05:00
Philippe Mathieu-Daudé 5d3586b834 qga: Extract guest_file_handle_find() to commands-common.h
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>
2020-04-15 09:15:53 -05:00
Philippe Mathieu-Daudé f62ebb6384 Revert "prevent crash when executing guest-file-read with large count"
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 807e2b6fce.

[*] 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>
2020-04-15 09:15:53 -05:00
Basil Salman 807e2b6fce qga-win: prevent crash when executing guest-file-read with large count
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>
2020-03-24 11:32:19 -05:00
Philippe Mathieu-Daudé 672db77892 qga: Improve error report by calling error_setg_win32()
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>
2020-03-09 13:36:15 +01:00
Vladimir Sementsov-Ogievskiy b90abbac0b qga: rename Error ** parameter to more common errp
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>
2019-12-18 08:43:19 +01:00
Basil Salman 28d8dd355b qga: Add "guest-get-memory-block-info" to blacklist
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>
2019-11-04 08:50:54 -06:00
Bishara AbuHattoum a18025f9ac qga-win: network-get-interfaces command name field bug fix
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>
2019-11-04 08:50:54 -06:00
Cao Jiaxi 8ac6557892 qga: Fix mingw compilation warnings on enum conversion
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>
2019-05-07 12:55:03 +01:00
Matt Hines 996b9cdc2f qga: Fix guest-get-fsinfo PCI address collection in Windows
The Windows QEMU guest agent erroneously tries to collect PCI information
directly from the physical drive. However, windows stores SCSI/IDE information
with the drive and PCI information with the underlying storage controller
This changes get_pci_info to use the physical drive's underlying storage
controller to get PCI information.

* Additionally Fixes incorrect size being passed to DeviceIoControl
  when getting volume extents. Can occasionally crash the guest agent

Signed-off-by: Matt Hines <mhines@scalecomputing.com>
*fix up some checkpatch warnings
*fix domain reporting and add some sanity checks for debug
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2019-03-18 10:48:07 -05:00
Bishara AbuHattoum bd586a9133 qga-win: Adding support for Windows Server 2019 get-osinfo command
Since Windows Server 2016, Microsoft stopped upgrading the major and minor
versions of their new Windows Server product, so, the current functionality
of checking major and minor version numbers to determine the Windows Server
version wont work as expected.
The implemented solution here is to use the build number in addition to the
major and minor version numbers of the product to determine the Windows
Server product version.
The final build number of Windows Server 2016 is 14939, and
the final build number of Windows Server 2019 is 17764, so any Windows
Server product that has the major version of 10 and minor version of 0
with a build number lower or equal to 14939 will resemble 2016 and if the
build number is lower or equal to 17763 will resemble 2019.

Reference:
https://techcommunity.microsoft.com/t5/Windows-Server-Insiders/Windows-Server-2019-version-info/m-p/293112/highlight/true#M859

Signed-off-by: Bishara AbuHattoum <bishara@daynix.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2019-03-18 10:24:20 -05:00
Marc-André Lureau 4ac8086647 qga: drop < Vista compatibility
Building QGA for XP seems possible so far: the dependency on
libqemuutil.a implies building qemu-thread-win32.c, which requires
Vista API since commit 12f8def0 (v2.9). But qemu-thread isn't being
used in QGA, the resulting binary may still work on XP.  XP is no
longer supported for the past 4.5y, it's time to drop support for it.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181122110039.15972-5-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 13:57:25 +01:00
Marc-André Lureau 56cdca1d7a build-sys: build with Vista API by default
Both qemu & qga build with Vista API by default already, by defining
_WIN32_WINNT 0x0600. Set it globally in osdep.h instead.

This replaces WINVER by _WIN32_WINNT in osdep.h. WINVER doesn't seem
to be really useful these days.
(see also https://blogs.msdn.microsoft.com/oldnewthing/20070411-00/?p=27283)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181122110039.15972-4-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 13:57:25 +01:00
Marc-André Lureau f898ee0f99 qga-win: fix leaks of build_guest_disk_info()
Introduced in commit b1ba8890e6, vol_h
handle should be closed, and "out" cleanup should be done after
DeviceIoControl() fails.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2018-11-09 07:50:02 -06:00
Li Qiang d9c85b6cc5 qga: fix an off-by-one issue
Signed-off-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2018-10-31 09:04:20 -05:00
Tomáš Golembiovský 7fae518479 qga-win: demystify namespace stripping
It was not obvious what exactly the cryptic string copying does to the
GUID. This change makes the intent clearer.

Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2018-10-31 09:04:20 -05:00