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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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@ -15,8 +15,7 @@ KResultOr<FlatPtr> Process::sys$link(Userspace<const Syscall::SC_link_params*> u
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
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REQUIRE_PROMISE(cpath);
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Syscall::SC_link_params params;
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if (!copy_from_user(¶ms, user_params))
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return EFAULT;
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TRY(copy_from_user(¶ms, user_params));
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auto old_path = TRY(try_copy_kstring_from_user(params.old_path));
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auto new_path = TRY(try_copy_kstring_from_user(params.new_path));
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return VirtualFileSystem::the().link(old_path->view(), new_path->view(), current_directory());
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@ -27,8 +26,7 @@ KResultOr<FlatPtr> Process::sys$symlink(Userspace<const Syscall::SC_symlink_para
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
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REQUIRE_PROMISE(cpath);
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Syscall::SC_symlink_params params;
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if (!copy_from_user(¶ms, user_params))
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return EFAULT;
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TRY(copy_from_user(¶ms, user_params));
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auto target = TRY(get_syscall_path_argument(params.target));
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auto linkpath = TRY(get_syscall_path_argument(params.linkpath));
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return VirtualFileSystem::the().symlink(target->view(), linkpath->view(), current_directory());
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