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ladybird/Userland/Utilities/reboot.cpp

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Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 11:38:21 +03:00
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
Kernel+Userland: Introduce a new way to reboot and poweroff the machine This change removes the halt and reboot syscalls, and create a new mechanism to change the power state of the machine. Instead of how power state was changed until now, put a SysFS node as writable only for the superuser, that with a defined value, can result in either reboot or poweroff. In the future, a power group can be assigned to this node (which will be the GroupID responsible for power management). This opens an opportunity to permit to shutdown/reboot without superuser permissions, so in the future, a userspace daemon can take control of this node to perform power management operations without superuser permissions, if we enforce different UserID/GroupID on that node.
2021-09-11 12:20:47 +03:00
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 11:38:21 +03:00
*
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-04-22 11:24:48 +03:00
* SPDX-License-Identifier: BSD-2-Clause
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 11:38:21 +03:00
*/
reboot: Port to LibMain First commit to the project! :^)
2022-03-04 01:51:39 +03:00
#include <LibCore/Stream.h>
#include <LibMain/Main.h>
Kernel+Userland: Addd reboot syscall (#334) Rolling with the theme of adding a dialog to shutdown the machine, it is probably nice to have a way to reboot the machine without performing a full system powerdown. A reboot program has been added to `/bin/` as well as a corresponding `syscall` (SC_reboot). This syscall works by attempting to pulse the 8042 keyboard controller. Note that this is NOT supported on new machines, and should only be a fallback until we have proper ACPI support. The implementation causes a triple fault in QEMU, which then restarts the system. The filesystems are locked and synchronized before this occurs, so there shouldn't be any corruption etctera.
2019-07-19 10:58:12 +03:00
reboot: Port to LibMain First commit to the project! :^)
2022-03-04 01:51:39 +03:00
ErrorOr<int> serenity_main(Main::Arguments)
Kernel+Userland: Addd reboot syscall (#334) Rolling with the theme of adding a dialog to shutdown the machine, it is probably nice to have a way to reboot the machine without performing a full system powerdown. A reboot program has been added to `/bin/` as well as a corresponding `syscall` (SC_reboot). This syscall works by attempting to pulse the 8042 keyboard controller. Note that this is NOT supported on new machines, and should only be a fallback until we have proper ACPI support. The implementation causes a triple fault in QEMU, which then restarts the system. The filesystems are locked and synchronized before this occurs, so there shouldn't be any corruption etctera.
2019-07-19 10:58:12 +03:00
{
Kernel+Userland: Move /sys/firmware/power_state to /sys/kernel directory Let's put the power_state global node into the /sys/kernel directory, because that directory represents all global nodes and variables being related to the Kernel. It's also a mutable node, that is more acceptable being in the mentioned directory due to the fact that all other files in the /sys/firmware directory are just firmware blobs and are not mutable at all.
2022-10-15 05:57:20 +03:00
auto file = TRY(Core::Stream::File::open("/sys/kernel/power_state"sv, Core::Stream::OpenMode::Write));
reboot: Port to LibMain First commit to the project! :^)
2022-03-04 01:51:39 +03:00
AK+Everywhere: Rename String to DeprecatedString We have a new, improved string type coming up in AK (OOM aware, no null state), and while it's going to use UTF-8, the name UTF8String is a mouthful - so let's free up the String name by renaming the existing class. Making the old one have an annoying name will hopefully also help with quick adoption :^)
2022-12-04 21:02:33 +03:00
const DeprecatedString file_contents = "1";
reboot: Port to LibMain First commit to the project! :^)
2022-03-04 01:51:39 +03:00
TRY(file->write(file_contents.bytes()));
file->close();
Kernel+Userland: Addd reboot syscall (#334) Rolling with the theme of adding a dialog to shutdown the machine, it is probably nice to have a way to reboot the machine without performing a full system powerdown. A reboot program has been added to `/bin/` as well as a corresponding `syscall` (SC_reboot). This syscall works by attempting to pulse the 8042 keyboard controller. Note that this is NOT supported on new machines, and should only be a fallback until we have proper ACPI support. The implementation causes a triple fault in QEMU, which then restarts the system. The filesystems are locked and synchronized before this occurs, so there shouldn't be any corruption etctera.
2019-07-19 10:58:12 +03:00
return 0;
}
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