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Kernel: Make UserOrKernelBuffer R/W helpers return KResultOr<size_t>
This makes error propagation less cumbersome (and also exposed some places where we were not doing it.)
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15 changed files with 64 additions and 85 deletions
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@ -25,13 +25,10 @@ bool RandomDevice::can_read(const FileDescription&, size_t) const
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KResultOr<size_t> RandomDevice::read(FileDescription&, u64, UserOrKernelBuffer& buffer, size_t size)
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{
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bool success = buffer.write_buffered<256>(size, [&](u8* data, size_t data_size) {
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return buffer.write_buffered<256>(size, [&](u8* data, size_t data_size) {
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get_good_random_bytes(data, data_size);
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return (ssize_t)data_size;
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return data_size;
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});
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if (!success)
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return EFAULT;
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return size;
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}
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KResultOr<size_t> RandomDevice::write(FileDescription&, u64, const UserOrKernelBuffer&, size_t size)
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