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Kernel: Make File::write() and File::read() return KResultOr<size_t>

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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.
This commit is contained in:
Andreas Kling 2020-08-04 18:02:23 +02:00
parent 58feebeed2
commit 7a3ab6c517
58 changed files with 223 additions and 229 deletions
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6
Kernel/Syscalls/read.cpp
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@ -56,8 +56,10 @@ ssize_t Process::sys$read(int fd, Userspace<u8*> buffer, ssize_t size)
return -EAGAIN;
}
}
// FIXME: We should have a read() that takes a Userspace<u8*>
return description->read(buffer.unsafe_userspace_ptr(), size);
auto result = description->read(buffer.unsafe_userspace_ptr(), size);
if (result.is_error())
return result.error();
return result.value();
}
}