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Kernel: Make UserOrKernelBuffer::for_user_buffer() return ErrorOr<T>

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This simplifies EFAULT propagation with TRY(). :^)
This commit is contained in:
Andreas Kling 2021-11-21 12:24:32 +01:00
parent b820ae2828
commit f2c3a41a8f
Notes: sideshowbarker 2024-07-18 00:53:53 +09:00
7 changed files with 27 additions and 47 deletions
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6
Kernel/Syscalls/get_dir_entries.cpp
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@ -16,10 +16,8 @@ ErrorOr<FlatPtr> Process::sys$get_dir_entries(int fd, Userspace<void*> user_buff
if (user_size > NumericLimits<ssize_t>::max())
return EINVAL;
auto description = TRY(fds().open_file_description(fd));
auto buffer = UserOrKernelBuffer::for_user_buffer(user_buffer, static_cast<size_t>(user_size));
if (!buffer.has_value())
return EFAULT;
auto count = TRY(description->get_dir_entries(buffer.value(), user_size));
auto buffer = TRY(UserOrKernelBuffer::for_user_buffer(user_buffer, static_cast<size_t>(user_size)));
auto count = TRY(description->get_dir_entries(buffer, user_size));
return count;
}