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Kernel: Move Kernel CommandLine parsing to strongly typed API.

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Previously all of the CommandLine parsing was spread out around the
Kernel. Instead move it all into the Kernel CommandLine class, and
expose a strongly typed API for querying the state of options.
This commit is contained in:
Brian Gianforcaro 2021-03-03 00:51:55 -08:00 • committed by Andreas Kling
parent 74881ac649
commit 84a399de5d
Notes: sideshowbarker 2024-07-18 21:45:29 +09:00
9 changed files with 143 additions and 45 deletions
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89
Kernel/CommandLine.cpp
View file

@ -25,6 +25,7 @@
*/
#include <Kernel/CommandLine.h>
#include <Kernel/Panic.h>
#include <Kernel/StdLib.h>
namespace Kernel {
@ -87,4 +88,92 @@ bool CommandLine::contains(const String& key) const
return m_params.contains(key);
}
UNMAP_AFTER_INIT bool CommandLine::is_ide_enabled() const
{
return !contains("disable_ide");
}
UNMAP_AFTER_INIT bool CommandLine::is_smp_enabled() const
{
return lookup("smp").value_or("off") == "on";
}
UNMAP_AFTER_INIT bool CommandLine::is_vmmouse_enabled() const
{
return lookup("vmmouse").value_or("on") == "on";
}
UNMAP_AFTER_INIT bool CommandLine::is_mmio_enabled() const
{
return lookup("pci_mmio").value_or("off") == "on";
}
UNMAP_AFTER_INIT bool CommandLine::is_legacy_time_enabled() const
{
return lookup("time").value_or("modern") == "legacy";
}
UNMAP_AFTER_INIT bool CommandLine::is_force_pio() const
{
return contains("force_pio");
}
UNMAP_AFTER_INIT String CommandLine::root_device() const
{
return lookup("root").value_or("/dev/hda");
}
UNMAP_AFTER_INIT AcpiFeatureLevel CommandLine::acpi_feature_level() const
{
auto value = kernel_command_line().lookup("acpi").value_or("on");
if (value == "limited")
return AcpiFeatureLevel::Limited;
if (value == "off")
return AcpiFeatureLevel::Disabled;
return AcpiFeatureLevel::Enabled;
}
UNMAP_AFTER_INIT HPETMode CommandLine::hpet_mode() const
{
auto hpet_mode = lookup("hpet").value_or("periodic");
if (hpet_mode == "periodic")
return HPETMode::Periodic;
if (hpet_mode == "nonperiodic")
return HPETMode::NonPeriodic;
PANIC("Unknown HPETMode: {}", hpet_mode);
}
UNMAP_AFTER_INIT BootMode CommandLine::boot_mode() const
{
const auto boot_mode = lookup("boot_mode").value_or("graphical");
if (boot_mode == "text") {
return BootMode::Text;
} else if (boot_mode == "self-test") {
return BootMode::SelfTest;
} else if (boot_mode == "graphical") {
return BootMode::Graphical;
}
PANIC("Unknown BootMode: {}", boot_mode);
}
UNMAP_AFTER_INIT bool CommandLine::is_text_mode() const
{
const auto mode = boot_mode();
return mode == BootMode::Text || mode == BootMode::SelfTest;
}
String CommandLine::userspace_init() const
{
return lookup("init").value_or("/bin/SystemServer");
}
Vector<String> CommandLine::userspace_init_args() const
{
auto init_args = lookup("init_args").value_or("").split(',');
if (!init_args.is_empty())
init_args.prepend(userspace_init());
return init_args;
}
}