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Kernel: add NullDevice to /dev/null

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Bananymous
2023-07-20 00:06:22 +03:00
parent adbe13938e
commit f8a1a10897
4 changed files with 46 additions and 0 deletions
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15
kernel/kernel/Device/NullDevice.cpp Normal file
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@@ -0,0 +1,15 @@
#include <kernel/Device/NullDevice.h>
#include <kernel/FS/DevFS/FileSystem.h>
namespace Kernel
{
BAN::ErrorOr<BAN::RefPtr<NullDevice>> NullDevice::create(mode_t mode, uid_t uid, gid_t gid)
{
auto* result = new NullDevice(mode, uid, gid, DevFileSystem::get().get_next_rdev());
if (result == nullptr)
return BAN::Error::from_errno(ENOMEM);
return BAN::RefPtr<NullDevice>::adopt(result);
}
}

3
kernel/kernel/FS/DevFS/FileSystem.cpp
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@@ -1,4 +1,5 @@
#include <BAN/ScopeGuard.h>
#include <kernel/Device/NullDevice.h>
#include <kernel/FS/DevFS/FileSystem.h>
#include <kernel/FS/RamFS/Inode.h>
#include <kernel/LockGuard.h>
@@ -17,6 +18,8 @@ namespace Kernel
auto root_inode = MUST(RamDirectoryInode::create(*s_instance, 0, Inode::Mode::IFDIR | 0755, 0, 0));
MUST(s_instance->set_root_inode(root_inode));
s_instance->add_device("null", MUST(NullDevice::create(0666, 0, 0)));
}
DevFileSystem& DevFileSystem::get()