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Kernel: Make copy_{from,to}_user() return KResult and use TRY()
This makes EFAULT propagation flow much more naturally. :^)
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57 changed files with 318 additions and 551 deletions
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@ -17,12 +17,9 @@ KResultOr<FlatPtr> Process::sys$lseek(int fd, Userspace<off_t*> userspace_offset
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if (!description)
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return EBADF;
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off_t offset;
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if (!copy_from_user(&offset, userspace_offset))
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return EFAULT;
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TRY(copy_from_user(&offset, userspace_offset));
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auto seek_result = TRY(description->seek(offset, whence));
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if (!copy_to_user(userspace_offset, &seek_result))
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return EFAULT;
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return KSuccess;
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return copy_to_user(userspace_offset, &seek_result);
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}
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}
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