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Violators will be prosecuted for from ; Mon, 17 Jul 2017 23:20:53 -0600 From: Michael Roth Date: Tue, 18 Jul 2017 00:20:14 -0500 In-Reply-To: <1500355216-23603-1-git-send-email-mdroth@linux.vnet.ibm.com> References: <1500355216-23603-1-git-send-email-mdroth@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Message-Id: <1500355216-23603-7-git-send-email-mdroth@linux.vnet.ibm.com> Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PULL 6/8] qemu-ga: add guest-get-osinfo command List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?UTF-8?q?Tom=C3=A1=C5=A1=20Golembiovsk=C3=BD?= , Vinzenz Feenstra From: Tom=C3=A1=C5=A1 Golembiovsk=C3=BD 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 Signed-off-by: Tom=C3=A1=C5=A1 Golembiovsk=C3=BD Signed-off-by: Michael Roth --- qga/commands-posix.c | 134 ++++++++++++++++++++++++++++++++++++ qga/commands-win32.c | 188 +++++++++++++++++++++++++++++++++++++++++++++= ++++++ qga/qapi-schema.json | 65 ++++++++++++++++++ 3 files changed, 387 insertions(+) diff --git a/qga/commands-posix.c b/qga/commands-posix.c index e7a047e..672bf29 100644 --- a/qga/commands-posix.c +++ b/qga/commands-posix.c @@ -13,6 +13,7 @@ =20 #include "qemu/osdep.h" #include +#include #include #include #include "qga/guest-agent-core.h" @@ -2592,3 +2593,136 @@ GuestUserList *qmp_guest_get_users(Error **errp) } =20 #endif + +/* Replace escaped special characters with theire real values. The repla= cement + * is done in place -- returned value is in the original string. + */ +static void ga_osrelease_replace_special(gchar *value) +{ + gchar *p, *p2, quote; + + /* Trim the string at first space or semicolon if it is not enclosed= in + * single or double quotes. */ + if ((value[0] !=3D '"') || (value[0] =3D=3D '\'')) { + p =3D strchr(value, ' '); + if (p !=3D NULL) { + *p =3D 0; + } + p =3D strchr(value, ';'); + if (p !=3D NULL) { + *p =3D 0; + } + return; + } + + quote =3D value[0]; + p2 =3D value; + p =3D value + 1; + while (*p !=3D 0) { + if (*p =3D=3D '\\') { + p++; + switch (*p) { + case '$': + case '\'': + case '"': + case '\\': + case '`': + break; + default: + /* Keep literal backslash followed by whatever is there = */ + p--; + break; + } + } else if (*p =3D=3D quote) { + *p2 =3D 0; + break; + } + *(p2++) =3D *(p++); + } +} + +static GKeyFile *ga_parse_osrelease(const char *fname) +{ + gchar *content =3D NULL; + gchar *content2 =3D NULL; + GError *err =3D NULL; + GKeyFile *keys =3D g_key_file_new(); + const char *group =3D "[os-release]\n"; + + if (!g_file_get_contents(fname, &content, NULL, &err)) { + slog("failed to read '%s', error: %s", fname, err->message); + goto fail; + } + + if (!g_utf8_validate(content, -1, NULL)) { + slog("file is not utf-8 encoded: %s", fname); + goto fail; + } + content2 =3D g_strdup_printf("%s%s", group, content); + + if (!g_key_file_load_from_data(keys, content2, -1, G_KEY_FILE_NONE, + &err)) { + slog("failed to parse file '%s', error: %s", fname, err->message= ); + goto fail; + } + + g_free(content); + g_free(content2); + return keys; + +fail: + g_error_free(err); + g_free(content); + g_free(content2); + g_key_file_free(keys); + return NULL; +} + +GuestOSInfo *qmp_guest_get_osinfo(Error **errp) +{ + GuestOSInfo *info =3D NULL; + struct utsname kinfo =3D {0}; + + info =3D g_new0(GuestOSInfo, 1); + + if (uname(&kinfo) !=3D 0) { + error_setg_errno(errp, errno, "uname failed"); + } else { + info->has_kernel_version =3D true; + info->kernel_version =3D g_strdup(kinfo.version); + info->has_kernel_release =3D true; + info->kernel_release =3D g_strdup(kinfo.release); + info->has_machine =3D true; + info->machine =3D g_strdup(kinfo.machine); + } + + GKeyFile *osrelease =3D ga_parse_osrelease("/etc/os-release"); + if (osrelease =3D=3D NULL) { + osrelease =3D ga_parse_osrelease("/usr/lib/os-release"); + } + + if (osrelease !=3D NULL) { + char *value; + +#define GET_FIELD(field, osfield) do { \ + value =3D g_key_file_get_value(osrelease, "os-release", osfield, NUL= L); \ + if (value !=3D NULL) { \ + ga_osrelease_replace_special(value); \ + info->has_ ## field =3D true; \ + info->field =3D value; \ + } \ +} while (0) + GET_FIELD(id, "ID"); + GET_FIELD(name, "NAME"); + GET_FIELD(pretty_name, "PRETTY_NAME"); + GET_FIELD(version, "VERSION"); + GET_FIELD(version_id, "VERSION_ID"); + GET_FIELD(variant, "VARIANT"); + GET_FIELD(variant_id, "VARIANT_ID"); +#undef GET_FIELD + + g_key_file_free(osrelease); + } + + return info; +} diff --git a/qga/commands-win32.c b/qga/commands-win32.c index 6f16457..524c71b 100644 --- a/qga/commands-win32.c +++ b/qga/commands-win32.c @@ -1642,3 +1642,191 @@ GuestUserList *qmp_guest_get_users(Error **err) 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] =3D { + { + /* 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 =3D sizeof(RTL_OSVERSIONINFOEXW); + + HMODULE module =3D GetModuleHandle("ntdll"); + PVOID fun =3D GetProcAddress(module, "RtlGetVersion"); + if (fun =3D=3D NULL) { + error_setg(errp, QERR_QGA_COMMAND_FAILED, + "Failed to get address of RtlGetVersion"); + return; + } + + rtl_get_version_t rtl_get_version =3D (rtl_get_version_t)fun; + rtl_get_version(info); + return; +} + +static char *ga_get_win_name(OSVERSIONINFOEXW const *os_version, bool id= ) +{ + DWORD major =3D os_version->dwMajorVersion; + DWORD minor =3D os_version->dwMinorVersion; + int tbl_idx =3D (os_version->wProductType !=3D VER_NT_WORKSTATION); + ga_matrix_lookup_t const *table =3D WIN_VERSION_MATRIX[tbl_idx]; + while (table->version !=3D NULL) { + if (major =3D=3D table->major && minor =3D=3D table->minor) { + if (id) { + return g_strdup(table->version_id); + } else { + return g_strdup(table->version); + } + } + ++table; + } + slog("failed to lookup Windows version: major=3D%lu, minor=3D%lu", + major, minor); + return g_strdup("N/A"); +} + +static char *ga_get_win_product_name(Error **errp) +{ + HKEY key =3D NULL; + DWORD size =3D 128; + char *result =3D g_malloc0(size); + LONG err =3D ERROR_SUCCESS; + + err =3D RegOpenKeyA(HKEY_LOCAL_MACHINE, + "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", + &key); + if (err !=3D ERROR_SUCCESS) { + error_setg_win32(errp, err, "failed to open registry key"); + goto fail; + } + + err =3D RegQueryValueExA(key, "ProductName", NULL, NULL, + (LPBYTE)result, &size); + if (err =3D=3D ERROR_MORE_DATA) { + slog("ProductName longer than expected (%lu bytes), retrying", + size); + g_free(result); + result =3D NULL; + if (size > 0) { + result =3D g_malloc0(size); + err =3D RegQueryValueExA(key, "ProductName", NULL, NULL, + (LPBYTE)result, &size); + } + } + if (err !=3D 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 =3D NULL; + switch (info.wProcessorArchitecture) { + case PROCESSOR_ARCHITECTURE_AMD64: + result =3D g_strdup("x86_64"); + break; + case PROCESSOR_ARCHITECTURE_ARM: + result =3D g_strdup("arm"); + break; + case PROCESSOR_ARCHITECTURE_IA64: + result =3D g_strdup("ia64"); + break; + case PROCESSOR_ARCHITECTURE_INTEL: + result =3D g_strdup("x86"); + break; + case PROCESSOR_ARCHITECTURE_UNKNOWN: + default: + slog("unknown processor architecture 0x%0x", + info.wProcessorArchitecture); + result =3D g_strdup("unknown"); + break; + } + return result; +} + +GuestOSInfo *qmp_guest_get_osinfo(Error **errp) +{ + Error *local_err =3D NULL; + OSVERSIONINFOEXW os_version =3D {0}; + + ga_get_win_version(&os_version, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return NULL; + } + + bool server =3D os_version.wProductType !=3D VER_NT_WORKSTATION; + char *product_name =3D ga_get_win_product_name(&local_err); + if (product_name =3D=3D NULL) { + error_propagate(errp, local_err); + return NULL; + } + + GuestOSInfo *info =3D g_new0(GuestOSInfo, 1); + + info->has_kernel_version =3D true; + info->kernel_version =3D g_strdup_printf("%lu.%lu", + os_version.dwMajorVersion, + os_version.dwMinorVersion); + info->has_kernel_release =3D true; + info->kernel_release =3D g_strdup_printf("%lu", + os_version.dwBuildNumber); + info->has_machine =3D true; + info->machine =3D ga_get_current_arch(); + + info->has_id =3D true; + info->id =3D g_strdup("mswindows"); + info->has_name =3D true; + info->name =3D g_strdup("Microsoft Windows"); + info->has_pretty_name =3D true; + info->pretty_name =3D product_name; + info->has_version =3D true; + info->version =3D ga_get_win_name(&os_version, false); + info->has_version_id =3D true; + info->version_id =3D ga_get_win_name(&os_version, true); + info->has_variant =3D true; + info->variant =3D g_strdup(server ? "server" : "client"); + info->has_variant_id =3D true; + info->variant_id =3D g_strdup(server ? "server" : "client"); + + return info; +} diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json index 03743ab..90a0c86 100644 --- a/qga/qapi-schema.json +++ b/qga/qapi-schema.json @@ -1126,3 +1126,68 @@ ## { 'command': 'guest-get-timezone', 'returns': 'GuestTimezone' } + +## +# @GuestOSInfo: +# +# @kernel-release: +# * POSIX: release field returned by uname(2) +# * Windows: version number of the OS +# @kernel-version: +# * POSIX: version field returned by uname(2) +# * Windows: build number of the OS +# @machine: +# * POSIX: machine field returned by uname(2) +# * Windows: one of x86, x86_64, arm, ia64 +# @id: +# * POSIX: as defined by os-release(5) +# * Windows: contains string "mswindows" +# @name: +# * POSIX: as defined by os-release(5) +# * Windows: contains string "Microsoft Windows" +# @pretty-name: +# * POSIX: as defined by os-release(5) +# * Windows: product name, e.g. "Microsoft Windows 10 Enterprise" +# @version: +# * POSIX: as defined by os-release(5) +# * Windows: long version string, e.g. "Microsoft Windows Server 200= 8" +# @version-id: +# * POSIX: as defined by os-release(5) +# * Windows: short version identifier, e.g. "7" or "20012r2" +# @variant: +# * POSIX: as defined by os-release(5) +# * Windows: contains string "server" or "client" +# @variant-id: +# * POSIX: as defined by os-release(5) +# * Windows: contains string "server" or "client" +# +# Notes: +# +# On POSIX systems the fields @id, @name, @pretty-name, @version, @versi= on-id, +# @variant and @variant-id follow the definition specified in os-release= (5). +# Refer to the manual page for exact description of the fields. Their va= lues +# are taken from the os-release file. If the file is not present in the = system, +# or the values are not present in the file, the fields are not included. +# +# On Windows the values are filled from information gathered from the sy= stem. +# +# Since: 2.10 +## +{ 'struct': 'GuestOSInfo', + 'data': { + '*kernel-release': 'str', '*kernel-version': 'str', + '*machine': 'str', '*id': 'str', '*name': 'str', + '*pretty-name': 'str', '*version': 'str', '*version-id': 'str', + '*variant': 'str', '*variant-id': 'str' } } + +## +# @guest-get-osinfo: +# +# Retrieve guest operating system information +# +# Returns: @GuestOSInfo +# +# Since: 2.10 +## +{ 'command': 'guest-get-osinfo', + 'returns': 'GuestOSInfo' } --=20 2.7.4