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Kernel: Make File::write() and File::read() return KResultOr<size_t>
Instead of returning a ssize_t where negative values mean error, we now return KResultOr<size_t> and use the error state to report errors exclusively.
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58feebeed2
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7a3ab6c517
58 changed files with 223 additions and 229 deletions
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@ -45,7 +45,7 @@ bool SerialDevice::can_read(const FileDescription&, size_t) const
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return (get_line_status() & DataReady) != 0;
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}
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ssize_t SerialDevice::read(FileDescription&, size_t, u8* buffer, ssize_t size)
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KResultOr<size_t> SerialDevice::read(FileDescription&, size_t, u8* buffer, size_t size)
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{
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if (!size)
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return 0;
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@ -63,7 +63,7 @@ bool SerialDevice::can_write(const FileDescription&, size_t) const
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return (get_line_status() & EmptyTransmitterHoldingRegister) != 0;
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}
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ssize_t SerialDevice::write(FileDescription&, size_t, const u8* buffer, ssize_t size)
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KResultOr<size_t> SerialDevice::write(FileDescription&, size_t, const u8* buffer, size_t size)
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{
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if (!size)
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return 0;
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