qemu-ga: add guest-get-osinfo command
Add a new 'guest-get-osinfo' command for reporting basic information of
the guest operating system. This includes machine architecture,
version and release of the kernel and several fields from os-release
file if it is present (as defined in [1]).
[1] https://www.freedesktop.org/software/systemd/man/os-release.html
Signed-off-by: Vinzenz Feenstra <vfeenstr@redhat.com>
Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com>
* moved declarations to beginning of functions
* dropped unecessary initialization of struct utsname
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 6f16457..619dbd2 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -1642,3 +1642,194 @@
return NULL;
#endif
}
+
+typedef struct _ga_matrix_lookup_t {
+ int major;
+ int minor;
+ char const *version;
+ char const *version_id;
+} ga_matrix_lookup_t;
+
+static ga_matrix_lookup_t const WIN_VERSION_MATRIX[2][8] = {
+ {
+ /* Desktop editions */
+ { 5, 0, "Microsoft Windows 2000", "2000"},
+ { 5, 1, "Microsoft Windows XP", "xp"},
+ { 6, 0, "Microsoft Windows Vista", "vista"},
+ { 6, 1, "Microsoft Windows 7" "7"},
+ { 6, 2, "Microsoft Windows 8", "8"},
+ { 6, 3, "Microsoft Windows 8.1", "8.1"},
+ {10, 0, "Microsoft Windows 10", "10"},
+ { 0, 0, 0}
+ },{
+ /* Server editions */
+ { 5, 2, "Microsoft Windows Server 2003", "2003"},
+ { 6, 0, "Microsoft Windows Server 2008", "2008"},
+ { 6, 1, "Microsoft Windows Server 2008 R2", "2008r2"},
+ { 6, 2, "Microsoft Windows Server 2012", "2012"},
+ { 6, 3, "Microsoft Windows Server 2012 R2", "2012r2"},
+ {10, 0, "Microsoft Windows Server 2016", "2016"},
+ { 0, 0, 0},
+ { 0, 0, 0}
+ }
+};
+
+static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp)
+{
+ typedef NTSTATUS(WINAPI * rtl_get_version_t)(
+ RTL_OSVERSIONINFOEXW *os_version_info_ex);
+
+ info->dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW);
+
+ HMODULE module = GetModuleHandle("ntdll");
+ PVOID fun = GetProcAddress(module, "RtlGetVersion");
+ if (fun == NULL) {
+ error_setg(errp, QERR_QGA_COMMAND_FAILED,
+ "Failed to get address of RtlGetVersion");
+ return;
+ }
+
+ rtl_get_version_t rtl_get_version = (rtl_get_version_t)fun;
+ rtl_get_version(info);
+ return;
+}
+
+static char *ga_get_win_name(OSVERSIONINFOEXW const *os_version, bool id)
+{
+ DWORD major = os_version->dwMajorVersion;
+ DWORD minor = os_version->dwMinorVersion;
+ int tbl_idx = (os_version->wProductType != VER_NT_WORKSTATION);
+ ga_matrix_lookup_t const *table = WIN_VERSION_MATRIX[tbl_idx];
+ while (table->version != NULL) {
+ if (major == table->major && minor == table->minor) {
+ if (id) {
+ return g_strdup(table->version_id);
+ } else {
+ return g_strdup(table->version);
+ }
+ }
+ ++table;
+ }
+ slog("failed to lookup Windows version: major=%lu, minor=%lu",
+ major, minor);
+ return g_strdup("N/A");
+}
+
+static char *ga_get_win_product_name(Error **errp)
+{
+ HKEY key = NULL;
+ DWORD size = 128;
+ char *result = g_malloc0(size);
+ LONG err = ERROR_SUCCESS;
+
+ err = RegOpenKeyA(HKEY_LOCAL_MACHINE,
+ "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion",
+ &key);
+ if (err != ERROR_SUCCESS) {
+ error_setg_win32(errp, err, "failed to open registry key");
+ goto fail;
+ }
+
+ err = RegQueryValueExA(key, "ProductName", NULL, NULL,
+ (LPBYTE)result, &size);
+ if (err == ERROR_MORE_DATA) {
+ slog("ProductName longer than expected (%lu bytes), retrying",
+ size);
+ g_free(result);
+ result = NULL;
+ if (size > 0) {
+ result = g_malloc0(size);
+ err = RegQueryValueExA(key, "ProductName", NULL, NULL,
+ (LPBYTE)result, &size);
+ }
+ }
+ if (err != ERROR_SUCCESS) {
+ error_setg_win32(errp, err, "failed to retrive ProductName");
+ goto fail;
+ }
+
+ return result;
+
+fail:
+ g_free(result);
+ return NULL;
+}
+
+static char *ga_get_current_arch(void)
+{
+ SYSTEM_INFO info;
+ GetNativeSystemInfo(&info);
+ char *result = NULL;
+ switch (info.wProcessorArchitecture) {
+ case PROCESSOR_ARCHITECTURE_AMD64:
+ result = g_strdup("x86_64");
+ break;
+ case PROCESSOR_ARCHITECTURE_ARM:
+ result = g_strdup("arm");
+ break;
+ case PROCESSOR_ARCHITECTURE_IA64:
+ result = g_strdup("ia64");
+ break;
+ case PROCESSOR_ARCHITECTURE_INTEL:
+ result = g_strdup("x86");
+ break;
+ case PROCESSOR_ARCHITECTURE_UNKNOWN:
+ default:
+ slog("unknown processor architecture 0x%0x",
+ info.wProcessorArchitecture);
+ result = g_strdup("unknown");
+ break;
+ }
+ return result;
+}
+
+GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
+{
+ Error *local_err = NULL;
+ OSVERSIONINFOEXW os_version = {0};
+ bool server;
+ char *product_name;
+ GuestOSInfo *info;
+
+ ga_get_win_version(&os_version, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return NULL;
+ }
+
+ server = os_version.wProductType != VER_NT_WORKSTATION;
+ product_name = ga_get_win_product_name(&local_err);
+ if (product_name == NULL) {
+ error_propagate(errp, local_err);
+ return NULL;
+ }
+
+ info = g_new0(GuestOSInfo, 1);
+
+ info->has_kernel_version = true;
+ info->kernel_version = g_strdup_printf("%lu.%lu",
+ os_version.dwMajorVersion,
+ os_version.dwMinorVersion);
+ info->has_kernel_release = true;
+ info->kernel_release = g_strdup_printf("%lu",
+ os_version.dwBuildNumber);
+ info->has_machine = true;
+ info->machine = ga_get_current_arch();
+
+ info->has_id = true;
+ info->id = g_strdup("mswindows");
+ info->has_name = true;
+ info->name = g_strdup("Microsoft Windows");
+ info->has_pretty_name = true;
+ info->pretty_name = product_name;
+ info->has_version = true;
+ info->version = ga_get_win_name(&os_version, false);
+ info->has_version_id = true;
+ info->version_id = ga_get_win_name(&os_version, true);
+ info->has_variant = true;
+ info->variant = g_strdup(server ? "server" : "client");
+ info->has_variant_id = true;
+ info->variant_id = g_strdup(server ? "server" : "client");
+
+ return info;
+}
