144 lines
5.3 KiB
C++
144 lines
5.3 KiB
C++
/*
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* Copyright (C) 2020 Jan-Michael Brummer <jan.brummer@tabos.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <wtf/glib/ChassisType.h>
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#include <mutex>
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#include <optional>
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#include <wtf/glib/GUniquePtr.h>
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namespace WTF {
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static std::optional<ChassisType> readMachineInfoChassisType()
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{
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GUniqueOutPtr<char> buffer;
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GUniqueOutPtr<GError> error;
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if (!g_file_get_contents("/etc/machine-info", &buffer.outPtr(), nullptr, &error.outPtr())) {
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if (!g_error_matches(error.get(), G_FILE_ERROR, G_FILE_ERROR_NOENT))
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g_warning("Could not open /etc/machine-info: %s", error->message);
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return std::nullopt;
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}
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GUniquePtr<char*> split(g_strsplit(buffer.get(), "\n", -1));
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for (int i = 0; split.get()[i]; ++i) {
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if (g_str_has_prefix(split.get()[i], "CHASSIS=")) {
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char* chassis = split.get()[i] + 8;
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GUniquePtr<char> unquoted(g_shell_unquote(chassis, &error.outPtr()));
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if (error)
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g_warning("Could not unquote chassis type %s: %s", chassis, error->message);
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if (!strcmp(unquoted.get(), "tablet") || !strcmp(unquoted.get(), "handset"))
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return ChassisType::Mobile;
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return ChassisType::Desktop;
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}
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}
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return std::nullopt;
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}
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static std::optional<ChassisType> readDMIChassisType()
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{
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GUniqueOutPtr<char> buffer;
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GUniqueOutPtr<GError> error;
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if (g_file_get_contents("/sys/class/dmi/id/chassis_type", &buffer.outPtr(), nullptr, &error.outPtr())) {
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int type = strtol(buffer.get(), nullptr, 10);
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// See the SMBIOS Specification 3.0 section 7.4.1 for details about the values listed here:
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// https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.0.0.pdf
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switch (type) {
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case 0x3: /* Desktop */
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case 0x4: /* Low Profile Desktop */
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case 0x6: /* Mini Tower */
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case 0x7: /* Tower */
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case 0x8: /* Portable */
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case 0x9: /* Laptop */
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case 0xA: /* Notebook */
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case 0xE: /* Sub Notebook */
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case 0x11: /* Main Server Chassis */
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case 0x1C: /* Blade */
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case 0x1D: /* Blade Enclosure */
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case 0x1F: /* Convertible */
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case 0x20: /* Detachable */
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return ChassisType::Desktop;
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case 0xB: /* Hand Held */
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case 0x1E: /* Tablet */
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return ChassisType::Mobile;
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}
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} else if (!g_error_matches(error.get(), G_FILE_ERROR, G_FILE_ERROR_NOENT))
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g_warning("Could not open /sys/class/dmi/id/chassis_type: %s", error->message);
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return std::nullopt;
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}
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static std::optional<ChassisType> readACPIChassisType()
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{
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GUniqueOutPtr<char> buffer;
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GUniqueOutPtr<GError> error;
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if (g_file_get_contents("/sys/firmware/acpi/pm_profile", &buffer.outPtr(), nullptr, &error.outPtr())) {
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int type = strtol(buffer.get(), nullptr, 10);
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// See the ACPI 5.0 Spec Section 5.2.9.1 for details:
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// http://www.acpi.info/DOWNLOADS/ACPIspec50.pdf
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switch (type) {
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case 1: /* Desktop */
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case 2: /* Mobile */
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case 3: /* Workstation */
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case 4: /* Enterprise Server */
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case 5: /* SOHO Server */
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case 6: /* Appliance PC */
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case 7: /* Performance Server */
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return ChassisType::Desktop;
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case 8: /* Tablet */
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return ChassisType::Mobile;
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}
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} else if (!g_error_matches(error.get(), G_FILE_ERROR, G_FILE_ERROR_NOENT))
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g_warning("Could not open /sys/firmware/acpi/pm_profile: %s", error->message);
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return std::nullopt;
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}
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ChassisType chassisType()
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{
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static ChassisType chassisType;
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static std::once_flag initializeChassis;
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std::call_once(initializeChassis, [] {
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auto optionalChassisType = readMachineInfoChassisType();
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if (!optionalChassisType)
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optionalChassisType = readDMIChassisType();
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if (!optionalChassisType)
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optionalChassisType = readACPIChassisType();
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chassisType = optionalChassisType.value_or(ChassisType::Desktop);
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});
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return chassisType;
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}
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} // namespace WTF
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