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Kernel: Move devices into Kernel/Devices/.

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This commit is contained in:
Andreas Kling 2019-04-03 12:36:40 +02:00
parent 072ea7eece
commit ab43658c55
42 changed files with 53 additions and 54 deletions
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38
Kernel/Devices/NullDevice.cpp Normal file
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@ -0,0 +1,38 @@
#include "NullDevice.h"
#include "Limits.h"
#include <AK/StdLibExtras.h>
#include <AK/kstdio.h>
static NullDevice* s_the;
NullDevice& NullDevice::the()
{
ASSERT(s_the);
return *s_the;
}
NullDevice::NullDevice()
: CharacterDevice(1, 3)
{
s_the = this;
}
NullDevice::~NullDevice()
{
}
bool NullDevice::can_read(Process&) const
{
return true;
}
ssize_t NullDevice::read(Process&, byte*, ssize_t)
{
return 0;
}
ssize_t NullDevice::write(Process&, const byte*, ssize_t buffer_size)
{
return min(GoodBufferSize, buffer_size);
}