2018-10-14 03:59:22 +03:00
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#include "ZeroDevice.h"
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2018-12-04 02:27:16 +03:00
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#include <AK/StdLibExtras.h>
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2018-10-16 15:33:16 +03:00
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#include <AK/kstdio.h>
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2018-10-14 03:59:22 +03:00
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ZeroDevice::ZeroDevice()
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2018-10-30 15:59:29 +03:00
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: CharacterDevice(1, 5)
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2018-10-14 03:59:22 +03:00
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{
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}
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ZeroDevice::~ZeroDevice()
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{
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}
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2019-11-04 16:03:14 +03:00
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bool ZeroDevice::can_read(const FileDescription&) const
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2018-10-25 14:07:59 +03:00
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{
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return true;
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}
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2019-07-03 22:17:35 +03:00
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ssize_t ZeroDevice::read(FileDescription&, u8* buffer, ssize_t size)
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2018-10-14 03:59:22 +03:00
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{
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2019-04-03 14:18:42 +03:00
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ssize_t count = min(PAGE_SIZE, size);
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2019-02-25 23:19:57 +03:00
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memset(buffer, 0, (size_t)count);
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2018-10-14 03:59:22 +03:00
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return count;
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}
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2019-07-03 22:17:35 +03:00
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ssize_t ZeroDevice::write(FileDescription&, const u8*, ssize_t size)
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2018-10-14 03:59:22 +03:00
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{
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2019-04-03 14:18:42 +03:00
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return min(PAGE_SIZE, size);
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2018-10-14 03:59:22 +03:00
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}
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