Adds vop_lookup_args

Author: ultimaweapon

kernel-1100/src/lib.rs

@@ -10,7 +10,7 @@ use self::socket::Socket;
 use self::thread::Thread;
 use self::ucred::Ucred;
 use self::uio::Uio;
-use self::vnode::{Vnode, VnodeOp, VopRead, VopReadDir, VopUnlock, VopVector};
+use self::vnode::{Vnode, VnodeOp, VopLookup, VopRead, VopReadDir, VopUnlock, VopVector};
 use core::ffi::{c_char, c_int};
 use core::num::NonZero;
 use okf::fd::OpenFlags;
@@ -80,6 +80,7 @@ impl okf::Kernel for Kernel {
     type Uio = Uio;
     type Vnode = Vnode;
     type VnodeOp = VnodeOp;
+    type VopLookup = VopLookup;
     type VopRead = VopRead;
     type VopReadDir = VopReadDir;
     type VopUnlock = VopUnlock;

kernel-1100/src/vnode.rs

@@ -1,3 +1,4 @@
+use crate::namei::ComponentName;
 use crate::ucred::Ucred;
 use crate::uio::Uio;
 use core::ffi::c_int;
@@ -104,3 +105,28 @@ impl okf::vnode::VopReadDir<crate::Kernel> for VopReadDir {
         }
     }
 }
+
+/// Implementation of [`okf::vnode::VopLookup`] for 11.00.
+#[repr(C)]
+pub struct VopLookup {
+    desc: *mut VnodeOp,
+    vp: *mut Vnode,
+    out: *mut *mut Vnode,
+    cn: *mut ComponentName,
+}
+
+impl okf::vnode::VopLookup<crate::Kernel> for VopLookup {
+    unsafe fn new(
+        k: crate::Kernel,
+        vp: *mut Vnode,
+        out: *mut *mut Vnode,
+        cn: *mut ComponentName,
+    ) -> Self {
+        Self {
+            desc: k.var(crate::Kernel::VOP_LOOKUP).ptr(),
+            vp,
+            out,
+            cn,
+        }
+    }
+}

src/lib.rs

@@ -12,7 +12,7 @@ use self::socket::{SockAddr, Socket};
 use self::thread::Thread;
 use self::ucred::Ucred;
 use self::uio::{Uio, UioSeg};
-use self::vnode::{Vnode, VnodeOp, VopRead, VopReadDir, VopUnlock, VopVector};
+use self::vnode::{Vnode, VnodeOp, VopLookup, VopRead, VopReadDir, VopUnlock, VopVector};
 use core::alloc::{GlobalAlloc, Layout};
 use core::ffi::{c_char, c_int};
 use core::marker::PhantomData;
@@ -83,6 +83,7 @@ pub trait Kernel: MappedKernel {
     type Uio: Uio<Self>;
     type Vnode: Vnode<Self>;
     type VnodeOp: VnodeOp;
+    type VopLookup: VopLookup<Self>;
     type VopRead: VopRead<Self>;
     type VopReadDir: VopReadDir<Self>;
     type VopUnlock: VopUnlock;

src/vnode/op.rs

@@ -38,3 +38,17 @@ pub trait VopReadDir<K: Kernel>: Sized {
         cookies: *mut *mut u64,
     ) -> Self;
 }
+
+/// Represents `vop_lookup_args` structure.
+pub trait VopLookup<K: Kernel>: Sized {
+    /// # Safety
+    /// - `vp` cannot be null and must be locked.
+    /// - `out` cannot be null.
+    /// - `cn` cannot be null.
+    unsafe fn new(
+        k: K,
+        vp: *mut K::Vnode,
+        out: *mut *mut K::Vnode,
+        cn: *mut K::ComponentName,
+    ) -> Self;
+}