mirror of
https://github.com/SerenityOS/serenity.git
synced 2025-01-23 09:51:57 -05:00
37 lines
533 B
C++
37 lines
533 B
C++
#include "NullDevice.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(PAGE_SIZE, buffer_size);
|
|
}
|
|
|