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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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8
Kernel/Syscalls/statvfs.cpp
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@ -62,10 +62,7 @@ KResultOr<FlatPtr> Process::do_statvfs(String path, statvfs* buf)
}
}
if (!copy_to_user(buf, &kernelbuf))
return EFAULT;
return 0;
return copy_to_user(buf, &kernelbuf);
}
KResultOr<FlatPtr> Process::sys$statvfs(Userspace<const Syscall::SC_statvfs_params*> user_params)
@ -74,8 +71,7 @@ KResultOr<FlatPtr> Process::sys$statvfs(Userspace<const Syscall::SC_statvfs_para
REQUIRE_PROMISE(rpath);
Syscall::SC_statvfs_params params;
if (!copy_from_user(&params, user_params))
return EFAULT;
TRY(copy_from_user(&params, user_params));
auto path = get_syscall_path_argument(params.path);
if (path.is_error())
return path.error();