diff --git a/orbis-kernel/include/orbis/thread/types.hpp b/orbis-kernel/include/orbis/thread/types.hpp
index 9985a6b2a..f867833e7 100644
--- a/orbis-kernel/include/orbis/thread/types.hpp
+++ b/orbis-kernel/include/orbis/thread/types.hpp
@@ -30,4 +30,22 @@ struct thr_param {
   ptr<char> name;
   ptr<void> spare[2];
 };
+
+static constexpr auto RFFDG = 1 << 2;    // copy fd table
+static constexpr auto RFPROC = 1 << 4;   // change child (else changes curproc)
+static constexpr auto RFMEM = 1 << 5;    // share `address space'
+static constexpr auto RFNOWAIT = 1 << 6; // give child to init
+static constexpr auto RFCFDG = 1 << 12;  // close all fds, zero fd table
+static constexpr auto RFSIGSHARE = 1 << 14; // share signal handlers
+static constexpr auto RFLINUXTHPN =
+    1 << 16; // do linux clone exit parent notification
+static constexpr auto RFTSIGZMB =
+    1 << 19; // select signal for exit parent notification
+static constexpr auto RFTSIGSHIFT =
+    20; // selected signal number is in bits 20-27
+static constexpr auto RFTSIGMASK = 0xFF;
+static constexpr auto RFPROCDESC = 1 << 28; // return a process descriptor
+static constexpr auto RFPPWAIT =
+    1 << 31; // parent sleeps until child exits (vfork)
+
 } // namespace orbis
diff --git a/orbis-kernel/src/sys/sys_fork.cpp b/orbis-kernel/src/sys/sys_fork.cpp
index 4c70633e4..db2ab7693 100644
--- a/orbis-kernel/src/sys/sys_fork.cpp
+++ b/orbis-kernel/src/sys/sys_fork.cpp
@@ -5,7 +5,12 @@
 #include <cstdlib>
 #include <unistd.h>
 
-orbis::SysResult orbis::sys_fork(Thread *thread) { return ErrorCode::NOSYS; }
+orbis::SysResult orbis::sys_fork(Thread *thread) {
+  if (auto fork = thread->tproc->ops->fork) {
+    return fork(thread, RFFDG | RFPROC);
+  }
+  return ErrorCode::NOSYS;
+}
 orbis::SysResult orbis::sys_pdfork(Thread *thread, ptr<sint> fdp, sint flags) {
   return ErrorCode::NOSYS;
 }
diff --git a/rpcsx-os/ops.cpp b/rpcsx-os/ops.cpp
index c005ae6e4..89504509e 100644
--- a/rpcsx-os/ops.cpp
+++ b/rpcsx-os/ops.cpp
@@ -691,7 +691,7 @@ orbis::SysResult nmount(orbis::Thread *thread, orbis::ptr<orbis::IoVec> iovp,
   }
 
   if (fstype == "nullfs") {
-    ORBIS_RET_ON_ERROR(rx::vfs::unlink(fspath, thread));
+    rx::vfs::unlinkAll(fspath, thread);
     return rx::vfs::createSymlink(target, fspath, thread);
   }
 
@@ -788,7 +788,7 @@ SysResult fork(Thread *thread, slong flags) {
     }
   }
 
-  if (false) {
+  if (flags & RFFDG) {
     std::lock_guard lock(thread->tproc->fileDescriptors.mutex);
     for (auto [id, mod] : thread->tproc->fileDescriptors) {
       if (!process->fileDescriptors.insert(id, mod)) {
@@ -827,6 +827,8 @@ SysResult fork(Thread *thread, slong flags) {
   dup2(logFd, 1);
   dup2(logFd, 2);
 
+  ::close(logFd);
+
   return {};
 }