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Kernel: Expose device presence in /sys/dev/char and /sys/dev/block

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These files are not marked as block devices or character devices so they
are not meant to be used as device nodes. The filenames are formatted to
the pattern "major:minor", but a Userland program need to call the parse
these format and inspect the the major and minor numbers and create the
real device nodes in /dev.

Later on, it might be a good idea to ensure we don't create new
SysFSComponents on the heap for each Device, but rather generate
them only when required (and preferably to not create a SysFSComponent
at all if possible).
This commit is contained in:
Liav A 2021-08-14 11:40:37 +03:00 • committed by Andreas Kling
commit 6a9c717a30
Notes: sideshowbarker 2024-07-18 04:28:57 +09:00
5 changed files with 183 additions and 2 deletions
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2
Kernel/init.cpp
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@ -182,6 +182,7 @@ extern "C" [[noreturn]] UNMAP_AFTER_INIT void init(BootInfo const& boot_info)
load_kernel_symbol_table();
SysFSComponentRegistry::initialize();
ConsoleDevice::initialize();
s_bsp_processor.initialize(0);
@ -275,7 +276,6 @@ void init_stage2(void*)
}
// Initialize the PCI Bus as early as possible, for early boot (PCI based) serial logging
SysFSComponentRegistry::initialize();
PCI::initialize();
PCISerialDevice::detect();