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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/mknod.cpp
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@ -15,8 +15,7 @@ KResultOr<FlatPtr> Process::sys$mknod(Userspace<const Syscall::SC_mknod_params*>
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(dpath);
Syscall::SC_mknod_params params;
if (!copy_from_user(&params, user_params))
return EFAULT;
TRY(copy_from_user(&params, user_params));
if (!is_superuser() && !is_regular_file(params.mode) && !is_fifo(params.mode) && !is_socket(params.mode))
return EPERM;
auto path = TRY(get_syscall_path_argument(params.path));