Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>

We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace!
This was a slightly tedious refactoring that took a long time, so it's
not unlikely that some bugs crept in.

Nevertheless, it does pass basic functionality testing, and it's just
real nice to finally see the same pattern in all contexts. :^)

1 files changed, 11 insertions, 10 deletions

diff --git a/Kernel/Syscalls/getuid.cpp b/Kernel/Syscalls/getuid.cpp
index 5185fa60df..da3cc535f9 100644
--- a/Kernel/Syscalls/getuid.cpp
+++ b/Kernel/Syscalls/getuid.cpp
@@ -8,55 +8,55 @@
 
 namespace Kernel {
 
-KResultOr<FlatPtr> Process::sys$getuid()
+ErrorOr<FlatPtr> Process::sys$getuid()
 {
     VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
     REQUIRE_PROMISE(stdio);
     return uid().value();
 }
 
-KResultOr<FlatPtr> Process::sys$getgid()
+ErrorOr<FlatPtr> Process::sys$getgid()
 {
     VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
     REQUIRE_PROMISE(stdio);
     return gid().value();
 }
 
-KResultOr<FlatPtr> Process::sys$geteuid()
+ErrorOr<FlatPtr> Process::sys$geteuid()
 {
     VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
     REQUIRE_PROMISE(stdio);
     return euid().value();
 }
 
-KResultOr<FlatPtr> Process::sys$getegid()
+ErrorOr<FlatPtr> Process::sys$getegid()
 {
     VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
     REQUIRE_PROMISE(stdio);
     return egid().value();
 }
 
-KResultOr<FlatPtr> Process::sys$getresuid(Userspace<UserID*> ruid, Userspace<UserID*> euid, Userspace<UserID*> suid)
+ErrorOr<FlatPtr> Process::sys$getresuid(Userspace<UserID*> ruid, Userspace<UserID*> euid, Userspace<UserID*> suid)
 {
     VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
     REQUIRE_PROMISE(stdio);
     TRY(copy_to_user(ruid, &m_protected_values.uid));
     TRY(copy_to_user(euid, &m_protected_values.euid));
     TRY(copy_to_user(suid, &m_protected_values.suid));
-    return KSuccess;
+    return 0;
 }
 
-KResultOr<FlatPtr> Process::sys$getresgid(Userspace<GroupID*> rgid, Userspace<GroupID*> egid, Userspace<GroupID*> sgid)
+ErrorOr<FlatPtr> Process::sys$getresgid(Userspace<GroupID*> rgid, Userspace<GroupID*> egid, Userspace<GroupID*> sgid)
 {
     VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
     REQUIRE_PROMISE(stdio);
     TRY(copy_to_user(rgid, &m_protected_values.gid));
     TRY(copy_to_user(egid, &m_protected_values.egid));
     TRY(copy_to_user(sgid, &m_protected_values.sgid));
-    return KSuccess;
+    return 0;
 }
 
-KResultOr<FlatPtr> Process::sys$getgroups(size_t count, Userspace<gid_t*> user_gids)
+ErrorOr<FlatPtr> Process::sys$getgroups(size_t count, Userspace<gid_t*> user_gids)
 {
     VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
     REQUIRE_PROMISE(stdio);
@@ -64,7 +64,8 @@ KResultOr<FlatPtr> Process::sys$getgroups(size_t count, Userspace<gid_t*> user_g
         return extra_gids().size();
     if (count != extra_gids().size())
         return EINVAL;
-    return copy_to_user(user_gids, extra_gids().data(), sizeof(gid_t) * count);
+    TRY(copy_to_user(user_gids, extra_gids().data(), sizeof(gid_t) * count));
+    return 0;
 }
 
 }