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Kernel: Make File's can_read/can_write take a const FileDescription&

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Asking a File if we could possibly read or write it will never mutate
the asking FileDescription&, so it should be const.
This commit is contained in:
Andreas Kling 2019-11-04 14:03:14 +01:00
parent e8fee92357
commit 1b2ef8582c
47 changed files with 97 additions and 91 deletions
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4
Kernel/Devices/SerialDevice.cpp
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@ -12,7 +12,7 @@ SerialDevice::~SerialDevice()
{
}
bool SerialDevice::can_read(FileDescription&) const
bool SerialDevice::can_read(const FileDescription&) const
{
return (get_line_status() & DataReady) != 0;
}
@ -30,7 +30,7 @@ ssize_t SerialDevice::read(FileDescription&, u8* buffer, ssize_t size)
return 1;
}
bool SerialDevice::can_write(FileDescription&) const
bool SerialDevice::can_write(const FileDescription&) const
{
return (get_line_status() & EmptyTransmitterHoldingRegister) != 0;
}