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Kernel: Make copy_{from,to}_user() return KResult and use TRY()

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This makes EFAULT propagation flow much more naturally. :^)
This commit is contained in:
Andreas Kling 2021-09-05 17:38:37 +02:00
parent 9903f5c6ef
commit 48a0b31c47
57 changed files with 318 additions and 551 deletions
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3
Kernel/Syscalls/hostname.cpp
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@ -17,8 +17,7 @@ KResultOr<FlatPtr> Process::sys$gethostname(Userspace<char*> buffer, size_t size
return hostname().with_shared([&](const auto& name) -> KResultOr<FlatPtr> {
if (size < (name.length() + 1))
return ENAMETOOLONG;
if (!copy_to_user(buffer, name.characters(), name.length() + 1))
return EFAULT;
TRY(copy_to_user(buffer, name.characters(), name.length() + 1));
return 0;
});
}