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QGA VSS: Add wrapper to send log to debugger and stderr

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Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
This commit is contained in:
Konstantin Kostiuk 2023-07-10 12:14:36 +03:00
parent fcd1ab3add
commit 925d05d38a
3 changed files with 65 additions and 1 deletions
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2
qga/vss-win32/meson.build
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@ -7,7 +7,7 @@ link_args = cc.get_supported_link_arguments([
qga_vss = shared_module(
'qga-vss',
['requester.cpp', 'provider.cpp', 'install.cpp', genh],
['requester.cpp', 'provider.cpp', 'install.cpp', 'vss-debug.cpp', genh],
name_prefix: '',
cpp_args: ['-Wno-unknown-pragmas', '-Wno-delete-non-virtual-dtor', '-Wno-non-virtual-dtor'],
link_args: link_args,

39
qga/vss-win32/vss-debug.cpp Normal file
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@ -0,0 +1,39 @@
/*
* QEMU Guest Agent VSS debug declarations
*
* Copyright (C) 2023 Red Hat Inc
*
* Authors:
* Konstantin Kostiuk <kkostiuk@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "vss-debug.h"
#include "vss-common.h"
void qga_debug_internal(const char *funcname, const char *fmt, ...)
{
char user_string[512] = {0};
char full_string[640] = {0};
va_list args;
va_start(args, fmt);
if (vsnprintf(user_string, _countof(user_string), fmt, args) <= 0) {
va_end(args);
return;
}
va_end(args);
if (snprintf(full_string, _countof(full_string),
QGA_PROVIDER_NAME "[%lu]: %s %s\n",
GetCurrentThreadId(), funcname, user_string) <= 0) {
return;
}
OutputDebugString(full_string);
fputs(full_string, stderr);
}

25
qga/vss-win32/vss-debug.h Normal file
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@ -0,0 +1,25 @@
/*
* QEMU Guest Agent VSS debug declarations
*
* Copyright (C) 2023 Red Hat Inc
*
* Authors:
* Konstantin Kostiuk <kkostiuk@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include <vss-handles.h>
#ifndef VSS_DEBUG_H
#define VSS_DEBUG_H
void qga_debug_internal(const char *funcname, const char *fmt, ...) G_GNUC_PRINTF(2, 3);
#define qga_debug(fmt, ...) qga_debug_internal(__func__, fmt, ## __VA_ARGS__)
#define qga_debug_begin qga_debug("begin")
#define qga_debug_end qga_debug("end")
#endif