Kernel: Add `sid` and `pgid` to `Credentials`

There are places in the kernel that would like to have access
to `pgid` credentials in certain circumstances.

I haven't found any use cases for `sid` yet, but `sid` and `pgid` are
both changed with `sys$setpgid`, so it seemed sensical to add it.

In Linux, `man 7 credentials` also mentions both the session id and
process group id, so this isn't unprecedented.

1 files changed, 5 insertions, 3 deletions

diff --git a/Kernel/Credentials.cpp b/Kernel/Credentials.cpp
index 935b4b107f..3fb155dbc1 100644
--- a/Kernel/Credentials.cpp
+++ b/Kernel/Credentials.cpp
@@ -10,13 +10,13 @@
 
 namespace Kernel {
 
-ErrorOr<NonnullRefPtr<Credentials>> Credentials::create(UserID uid, GroupID gid, UserID euid, GroupID egid, UserID suid, GroupID sgid, Span<GroupID const> extra_gids)
+ErrorOr<NonnullRefPtr<Credentials>> Credentials::create(UserID uid, GroupID gid, UserID euid, GroupID egid, UserID suid, GroupID sgid, Span<GroupID const> extra_gids, SessionID sid, ProcessGroupID pgid)
 {
     auto extra_gids_array = TRY(FixedArray<GroupID>::try_create(extra_gids));
-    return adopt_nonnull_ref_or_enomem(new (nothrow) Credentials(uid, gid, euid, egid, suid, sgid, move(extra_gids_array)));
+    return adopt_nonnull_ref_or_enomem(new (nothrow) Credentials(uid, gid, euid, egid, suid, sgid, move(extra_gids_array), sid, pgid));
 }
 
-Credentials::Credentials(UserID uid, GroupID gid, UserID euid, GroupID egid, UserID suid, GroupID sgid, FixedArray<GroupID> extra_gids)
+Credentials::Credentials(UserID uid, GroupID gid, UserID euid, GroupID egid, UserID suid, GroupID sgid, FixedArray<GroupID> extra_gids, SessionID sid, ProcessGroupID pgid)
     : m_uid(uid)
     , m_gid(gid)
     , m_euid(euid)
@@ -24,6 +24,8 @@ Credentials::Credentials(UserID uid, GroupID gid, UserID euid, GroupID egid, Use
     , m_suid(suid)
     , m_sgid(sgid)
     , m_extra_gids(move(extra_gids))
+    , m_sid(sid)
+    , m_pgid(pgid)
 {
 }