[Yellowstone] Use the file api to load the init file.

lib/mammoth/CMakeLists.txt

@@ -1,27 +1,33 @@
 add_library(mammoth STATIC
-  src/channel.cpp
-  src/debug.cpp
-  src/endpoint_client.cpp
-  src/endpoint_server.cpp
-  src/init.cpp
-  src/memory_region.cpp
-  src/mutex.cpp
-  src/new.cpp
-  src/process.cpp
-  src/port_client.cpp
-  src/port_server.cpp
-  src/semaphore.cpp
-  src/thread.cpp
+  file/file.cpp
+  ipc/channel.cpp
+  ipc/endpoint_client.cpp
+  ipc/endpoint_server.cpp
+  ipc/port_client.cpp
+  ipc/port_server.cpp
+  proc/process.cpp
+  proc/thread.cpp
+  sync/mutex.cpp
+  sync/semaphore.cpp
+  util/debug.cpp
+  util/init.cpp
+  util/memory_region.cpp
+  util/new.cpp
   )
 
 target_include_directories(mammoth
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
-  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)
+  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
+  "${CMAKE_CURRENT_SOURCE_DIR}/.."
+  )
 
 target_link_libraries(mammoth
   glacier
   c
-  zion_stub)
+  victoriafalls_yunq
+  yellowstone_yunq
+  zion_stub
+  )
 
 set_target_properties(mammoth PROPERTIES
   COMPILE_FLAGS "${CMAKE_CXX_FLAGS} ${BASE_COMPILE_FLAGS}"

lib/mammoth/file/file.cpp

@@ -0,0 +1,47 @@
+#include "file/file.h"
+
+#include <victoriafalls/victoriafalls.yunq.client.h>
+#include <yellowstone/yellowstone.yunq.client.h>
+#include <zglobal.h>
+
+#include "util/debug.h"
+
+namespace mmth {
+namespace {
+
+VFSClient* gVfsClient = nullptr;
+
+}  // namespace
+
+void SetVfsCap(z_cap_t vfs_cap) { gVfsClient = new VFSClient(vfs_cap); }
+
+File File::Open(glcr::StringView path) {
+  if (gVfsClient == 0) {
+    YellowstoneClient client(gInitEndpointCap);
+
+    GetEndpointRequest yreq;
+    yreq.set_endpoint_name("victoriafalls");
+    Endpoint yresp;
+    check(client.GetEndpoint(yreq, yresp));
+
+    gVfsClient = new VFSClient(yresp.endpoint());
+  }
+
+  OpenFileRequest req;
+  req.set_path(path);
+  OpenFileResponse resp;
+  check(gVfsClient->OpenFile(req, resp));
+
+  return File(OwnedMemoryRegion::FromCapability(resp.memory()), resp.size());
+}
+
+glcr::StringView File::as_str() {
+  return glcr::StringView((char*)raw_ptr(), size_);
+}
+
+void* File::raw_ptr() { return reinterpret_cast<void*>(file_data_.vaddr()); }
+uint8_t* File::byte_ptr() {
+  return reinterpret_cast<uint8_t*>(file_data_.vaddr());
+}
+
+}  // namespace mmth

lib/mammoth/file/file.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <glacier/memory/move.h>
+#include <glacier/string/string_view.h>
+
+#include "mammoth/util/memory_region.h"
+
+namespace mmth {
+
+// Intended for use in yellowstone since it already has the VFS cap.
+void SetVfsCap(z_cap_t vfs_cap);
+
+class File {
+ public:
+  static File Open(glcr::StringView path);
+
+  uint64_t size() { return size_; }
+
+  glcr::StringView as_str();
+
+  void* raw_ptr();
+  uint8_t* byte_ptr();
+
+ private:
+  OwnedMemoryRegion file_data_;
+  uint64_t size_;
+
+  File(OwnedMemoryRegion&& file, uint64_t size)
+      : file_data_(glcr::Move(file)), size_(size) {}
+};
+
+}  // namespace mmth

lib/mammoth/ipc/channel.cpp

@@ -1,9 +1,10 @@
-#include "mammoth/channel.h"
+#include "ipc/channel.h"
 
 #include <zcall.h>
 
-#include "mammoth/debug.h"
+#include "util/debug.h"
 
+namespace mmth {
 namespace {
 
 uint64_t strlen(const char* ptr) {
@@ -55,3 +56,5 @@ z_err_t CreateChannels(Channel& c1, Channel& c2) {
   c2.adopt_cap(chan2);
   return glcr::OK;
 }
+
+}  // namespace mmth

lib/mammoth/ipc/channel.h

@@ -4,6 +4,8 @@
 #include <stdint.h>
 #include <zcall.h>
 
+namespace mmth {
+
 class Channel {
  public:
   Channel() {}
@@ -45,3 +47,5 @@ z_err_t Channel::ReadStructAndCap(T* obj, uint64_t* cap) {
   }
   return glcr::OK;
 }
+
+}  // namespace mmth

lib/mammoth/ipc/endpoint_client.cpp

@@ -1,5 +1,9 @@
-#include "mammoth/endpoint_server.h"
+#include "ipc/endpoint_server.h"
+
+namespace mmth {
 
 glcr::UniquePtr<EndpointClient> EndpointClient::AdoptEndpoint(z_cap_t cap) {
   return glcr::UniquePtr<EndpointClient>(new EndpointClient(cap));
 }
+
+}  // namespace mmth

lib/mammoth/ipc/endpoint_client.h

@@ -6,6 +6,8 @@
 #include <zcall.h>
 #include <ztypes.h>
 
+namespace mmth {
+
 class EndpointClient {
  public:
   EndpointClient() = delete;
@@ -63,3 +65,5 @@ glcr::ErrorOr<Resp> EndpointClient::CallEndpoint(const Req& req) {
 
   return resp;
 }
+
+}  // namespace mmth

lib/mammoth/ipc/endpoint_server.cpp

@@ -1,7 +1,8 @@
-#include "mammoth/endpoint_server.h"
+#include "ipc/endpoint_server.h"
 
-#include "mammoth/debug.h"
+#include "util/debug.h"
 
+namespace mmth {
 // Declared as friend in EndpointServer.
 void EndpointServerThreadBootstrap(void* endpoint_server) {
   reinterpret_cast<EndpointServer*>(endpoint_server)->ServerThread();
@@ -40,3 +41,5 @@ void EndpointServer::ServerThread() {
     }
   }
 }
+
+}  // namespace mmth

lib/mammoth/ipc/endpoint_server.h

@@ -4,11 +4,12 @@
 #include <glacier/status/error_or.h>
 #include <ztypes.h>
 
-#include "mammoth/endpoint_client.h"
-#include "mammoth/request_context.h"
-#include "mammoth/response_context.h"
-#include "mammoth/thread.h"
+#include "mammoth/ipc/endpoint_client.h"
+#include "mammoth/ipc/request_context.h"
+#include "mammoth/ipc/response_context.h"
+#include "mammoth/proc/thread.h"
 
+namespace mmth {
 class EndpointServer {
  public:
   EndpointServer() = delete;
@@ -34,3 +35,5 @@ class EndpointServer {
   friend void EndpointServerThreadBootstrap(void* endpoint_server);
   void ServerThread();
 };
+
+}  // namespace mmth

lib/mammoth/ipc/port_client.cpp

@@ -1,9 +1,11 @@
-#include "mammoth/port_client.h"
+#include "ipc/port_client.h"
 
 #include <glacier/status/error.h>
 #include <zcall.h>
 
-#include "mammoth/debug.h"
+#include "util/debug.h"
+
+namespace mmth {
 
 PortClient PortClient::AdoptPort(z_cap_t cap) { return PortClient(cap); }
 PortClient::PortClient(z_cap_t port_cap) : port_cap_(port_cap) {}
@@ -12,3 +14,5 @@ glcr::ErrorCode PortClient::WriteString(glcr::String str, z_cap_t cap) {
   return static_cast<glcr::ErrorCode>(
       ZPortSend(port_cap_, str.length() + 1, str.cstr(), 1, &cap));
 }
+
+}  // namespace mmth

lib/mammoth/ipc/port_client.h

@@ -5,6 +5,8 @@
 #include <stdint.h>
 #include <zcall.h>
 
+namespace mmth {
+
 class PortClient {
  public:
   PortClient() {}
@@ -29,3 +31,5 @@ template <typename T>
 z_err_t PortClient::WriteMessage(const T& obj, z_cap_t cap) {
   return ZPortSend(port_cap_, sizeof(obj), &obj, 1, &cap);
 }
+
+}  // namespace mmth

lib/mammoth/ipc/port_server.cpp

@@ -1,7 +1,9 @@
-#include "mammoth/port_server.h"
+#include "ipc/port_server.h"
 
 #include <zcall.h>
 
+namespace mmth {
+
 glcr::ErrorOr<PortServer> PortServer::Create() {
   z_cap_t port;
   RET_ERR(ZPortCreate(&port));
@@ -44,3 +46,5 @@ glcr::ErrorCode PortServer::PollForIntCap(uint64_t *msg, uint64_t *cap) {
   }
   return glcr::OK;
 }
+
+}  // namespace mmth

lib/mammoth/ipc/port_server.h

@@ -3,7 +3,9 @@
 #include <glacier/status/error_or.h>
 #include <ztypes.h>
 
-#include "mammoth/port_client.h"
+#include "mammoth/ipc/port_client.h"
+
+namespace mmth {
 
 class PortServer {
  public:
@@ -22,3 +24,5 @@ class PortServer {
 
   PortServer(z_cap_t cap);
 };
+
+}  // namespace mmth

lib/mammoth/proc/process.cpp

@@ -1,16 +1,17 @@
-#include "mammoth/process.h"
+#include "proc/process.h"
 
 #include <glacier/status/error.h>
 #include <zcall.h>
 
-#include "mammoth/debug.h"
-#include "mammoth/endpoint_server.h"
-#include "mammoth/init.h"
-#include "mammoth/port_client.h"
-#include "mammoth/port_server.h"
+#include "ipc/endpoint_server.h"
+#include "ipc/port_client.h"
+#include "ipc/port_server.h"
+#include "util/debug.h"
+#include "util/init.h"
 
 #define MAM_PROC_DEBUG 0
 
+namespace mmth {
 namespace {
 
 typedef struct {
@@ -140,3 +141,5 @@ glcr::ErrorCode SpawnProcessFromElfRegion(uint64_t program,
 
   return glcr::OK;
 }
+
+}  // namespace mmth

lib/mammoth/proc/process.h

@@ -2,8 +2,11 @@
 
 #include <glacier/status/error.h>
 #include <stdint.h>
+#include <ztypes.h>
 
-#include "mammoth/endpoint_client.h"
+namespace mmth {
 
 glcr::ErrorCode SpawnProcessFromElfRegion(uint64_t program,
                                           z_cap_t yellowstone_client);
+
+}  // namespace mmth

lib/mammoth/proc/thread.cpp

@@ -1,9 +1,9 @@
-#include "mammoth/thread.h"
+#include "proc/thread.h"
 
 #include <zcall.h>
 
-#include "mammoth/debug.h"
-#include "mammoth/init.h"
+#include "util/debug.h"
+#include "util/init.h"
 
 namespace {
 

lib/mammoth/sync/mutex.cpp

@@ -1,7 +1,9 @@
-#include "mammoth/mutex.h"
+#include "sync/mutex.h"
 
 #include <zcall.h>
 
+namespace mmth {
+
 Mutex::Mutex(Mutex&& other) : mutex_cap_(other.mutex_cap_) {
   other.mutex_cap_ = 0;
 }
@@ -25,3 +27,5 @@ glcr::ErrorCode Mutex::Lock() {
 glcr::ErrorCode Mutex::Release() {
   return static_cast<glcr::ErrorCode>(ZMutexRelease(mutex_cap_));
 }
+
+}  // namespace mmth

lib/mammoth/sync/mutex.h

@@ -3,6 +3,8 @@
 #include <glacier/status/error_or.h>
 #include <ztypes.h>
 
+namespace mmth {
+
 class Mutex {
  public:
   Mutex(const Mutex&) = delete;
@@ -19,3 +21,5 @@ class Mutex {
 
   Mutex(z_cap_t mutex_cap) : mutex_cap_(mutex_cap) {}
 };
+
+}  // namespace mmth

lib/mammoth/sync/semaphore.cpp

@@ -1,11 +1,15 @@
-#include "mammoth/semaphore.h"
+#include "sync/semaphore.h"
 
 #include <zcall.h>
 
-#include "mammoth/debug.h"
+#include "util/debug.h"
+
+namespace mmth {
 
 Semaphore::Semaphore() { check(ZSemaphoreCreate(&semaphore_cap_)); }
 Semaphore::~Semaphore() { check(ZCapRelease(semaphore_cap_)); }
 
 void Semaphore::Wait() { check(ZSemaphoreWait(semaphore_cap_)); }
 void Semaphore::Signal() { check(ZSemaphoreSignal(semaphore_cap_)); }
+
+}  // namespace mmth

lib/mammoth/sync/semaphore.h

@@ -2,6 +2,8 @@
 
 #include <ztypes.h>
 
+namespace mmth {
+
 class Semaphore {
  public:
   Semaphore();
@@ -13,3 +15,5 @@ class Semaphore {
  private:
   z_cap_t semaphore_cap_;
 };
+
+}  // namespace mmth

lib/mammoth/util/debug.cpp

@@ -1,4 +1,4 @@
-#include "include/mammoth/debug.h"
+#include "util/debug.h"
 
 #include <glacier/status/error.h>
 #include <zcall.h>

lib/mammoth/util/init.cpp

@@ -1,10 +1,10 @@
-#include "mammoth/init.h"
+#include "util/init.h"
 
 #include <glacier/status/error.h>
 #include <ztypes.h>
 
-#include "mammoth/debug.h"
-#include "mammoth/port_server.h"
+#include "ipc/port_server.h"
+#include "util/debug.h"
 
 uint64_t gSelfProcCap = 0;
 uint64_t gSelfVmasCap = 0;
@@ -17,7 +17,7 @@ uint64_t gBootPciVmmoCap = 0;
 uint64_t gBootFramebufferVmmoCap = 0;
 
 z_err_t ParseInitPort(uint64_t init_port_cap) {
-  PortServer port = PortServer::AdoptCap(init_port_cap);
+  mmth::PortServer port = mmth::PortServer::AdoptCap(init_port_cap);
   z_err_t ret;
   uint64_t init_sig, init_cap;
   while ((ret = port.PollForIntCap(&init_sig, &init_cap)) != glcr::EMPTY) {

lib/mammoth/util/memory_region.cpp

@@ -1,9 +1,11 @@
-#include "mammoth/memory_region.h"
+#include "util/memory_region.h"
 
 #include <zcall.h>
 
-#include "mammoth/debug.h"
-#include "mammoth/init.h"
+#include "util/debug.h"
+#include "util/init.h"
+
+namespace mmth {
 
 OwnedMemoryRegion::OwnedMemoryRegion(OwnedMemoryRegion&& other)
     : OwnedMemoryRegion(other.vmmo_cap_, other.vaddr_, other.size_) {
@@ -68,3 +70,5 @@ z_cap_t OwnedMemoryRegion::DuplicateCap() {
   check(ZCapDuplicate(vmmo_cap_, kZionPerm_All, &cap));
   return cap;
 }
+
+}  // namespace mmth

lib/mammoth/util/memory_region.h

@@ -3,6 +3,7 @@
 #include <stdint.h>
 #include <ztypes.h>
 
+namespace mmth {
 /*
  * Memory Region class that unmaps its memory and releases its
  * capability when it goes out of scope.
@@ -41,3 +42,5 @@ class OwnedMemoryRegion {
   // TODO: We may want to differentiate between VMMO size and mapped size?
   uint64_t size_ = 0;
 };
+
+}  // namespace mmth

sys/denali/ahci/ahci_device.cpp

@@ -1,7 +1,7 @@
 #include "ahci/ahci_device.h"
 
 #include <glacier/status/error.h>
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 #include <string.h>
 #include <zcall.h>
 
@@ -14,7 +14,8 @@ AhciDevice::AhciDevice(AhciPort* port) : port_struct_(port) {
   // 0x400-0x500 -> Received FIS
   // 0x500-0x2500 -> Command Tables (0x100 each) (Max PRDT Length is 8 for now)
   uint64_t paddr;
-  command_structures_ = OwnedMemoryRegion::ContiguousPhysical(0x2500, &paddr);
+  command_structures_ =
+      mmth::OwnedMemoryRegion::ContiguousPhysical(0x2500, &paddr);
 
   command_list_ = reinterpret_cast<CommandList*>(command_structures_.vaddr());
   port_struct_->command_list_base = paddr;

sys/denali/ahci/ahci_device.h

@@ -1,7 +1,7 @@
 #pragma once
 
 #include <glacier/status/error.h>
-#include <mammoth/memory_region.h>
+#include <mammoth/util/memory_region.h>
 #include <ztypes.h>
 
 #include "ahci/ahci.h"
@@ -26,7 +26,7 @@ class AhciDevice {
 
  private:
   AhciPort* port_struct_ = nullptr;
-  OwnedMemoryRegion command_structures_;
+  mmth::OwnedMemoryRegion command_structures_;
 
   CommandList* command_list_ = nullptr;
   ReceivedFis* received_fis_ = nullptr;

sys/denali/ahci/ahci_driver.cpp

@@ -2,7 +2,7 @@
 
 #include <glacier/status/error.h>
 #include <glacier/status/error_or.h>
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 #include <stdint.h>
 #include <zcall.h>
 
@@ -21,7 +21,7 @@ void interrupt_thread(void* void_driver) {
 }  // namespace
 
 glcr::ErrorOr<glcr::UniquePtr<AhciDriver>> AhciDriver::Init(
-    OwnedMemoryRegion&& pci_region) {
+    mmth::OwnedMemoryRegion&& pci_region) {
   glcr::UniquePtr<AhciDriver> driver(new AhciDriver(glcr::Move(pci_region)));
   // RET_ERR(driver->LoadCapabilities());
   RET_ERR(driver->LoadHbaRegisters());
@@ -191,8 +191,8 @@ glcr::ErrorCode AhciDriver::RegisterIrq() {
 }
 
 glcr::ErrorCode AhciDriver::LoadHbaRegisters() {
-  ahci_region_ =
-      OwnedMemoryRegion ::DirectPhysical(pci_device_header_->abar, 0x1100);
+  ahci_region_ = mmth::OwnedMemoryRegion ::DirectPhysical(
+      pci_device_header_->abar, 0x1100);
   ahci_hba_ = reinterpret_cast<AhciHba*>(ahci_region_.vaddr());
   num_ports_ = (ahci_hba_->capabilities & 0x1F) + 1;
   num_commands_ = ((ahci_hba_->capabilities & 0x1F00) >> 8) + 1;

sys/denali/ahci/ahci_driver.h

@@ -2,7 +2,7 @@
 
 #include <glacier/memory/unique_ptr.h>
 #include <glacier/status/error_or.h>
-#include <mammoth/thread.h>
+#include <mammoth/proc/thread.h>
 #include <ztypes.h>
 
 #include "ahci/ahci.h"
@@ -11,7 +11,7 @@
 class AhciDriver {
  public:
   static glcr::ErrorOr<glcr::UniquePtr<AhciDriver>> Init(
-      OwnedMemoryRegion&& ahci_phys);
+      mmth::OwnedMemoryRegion&& ahci_phys);
   glcr::ErrorCode RegisterIrq();
 
   void InterruptLoop();
@@ -22,9 +22,9 @@ class AhciDriver {
   void DumpPorts();
 
  private:
-  OwnedMemoryRegion pci_region_;
+  mmth::OwnedMemoryRegion pci_region_;
   PciDeviceHeader* pci_device_header_ = nullptr;
-  OwnedMemoryRegion ahci_region_;
+  mmth::OwnedMemoryRegion ahci_region_;
   AhciHba* ahci_hba_ = nullptr;
 
   // TODO: Allocate these dynamically.
@@ -40,7 +40,7 @@ class AhciDriver {
   glcr::ErrorCode LoadHbaRegisters();
   glcr::ErrorCode LoadDevices();
 
-  AhciDriver(OwnedMemoryRegion&& pci_region)
+  AhciDriver(mmth::OwnedMemoryRegion&& pci_region)
       : pci_region_(glcr::Move(pci_region)),
         pci_device_header_(
             reinterpret_cast<PciDeviceHeader*>(pci_region_.vaddr())) {}

sys/denali/ahci/command.h

@@ -1,8 +1,6 @@
 #pragma once
 
-#include <mammoth/memory_region.h>
-#include <mammoth/response_context.h>
-#include <mammoth/semaphore.h>
+#include <mammoth/sync/semaphore.h>
 #include <stdint.h>
 
 #include "ahci/ahci.h"
@@ -34,5 +32,5 @@ class DmaReadCommand : public Command {
   uint64_t paddr_;
   // TODO: Make this owned by the device so that we don't have to create a new
   // one with the kernel every time a command is issued.
-  Semaphore callback_semaphore_;
+  mmth::Semaphore callback_semaphore_;
 };

sys/denali/denali.cpp

@@ -1,8 +1,6 @@
 
-#include <mammoth/debug.h>
-#include <mammoth/endpoint_server.h>
-#include <mammoth/init.h>
-#include <mammoth/port_client.h>
+#include <mammoth/util/debug.h>
+#include <mammoth/util/init.h>
 #include <stdint.h>
 #include <yellowstone/yellowstone.yunq.client.h>
 
@@ -11,15 +9,13 @@
 
 uint64_t main(uint64_t init_port_cap) {
   check(ParseInitPort(init_port_cap));
-  glcr::UniquePtr<EndpointClient> yellowstone =
-      EndpointClient::AdoptEndpoint(gInitEndpointCap);
 
   YellowstoneClient stub(gInitEndpointCap);
   Empty empty;
   AhciInfo ahci;
   RET_ERR(stub.GetAhciInfo(empty, ahci));
-  OwnedMemoryRegion ahci_region =
-      OwnedMemoryRegion::FromCapability(ahci.ahci_region());
+  mmth::OwnedMemoryRegion ahci_region =
+      mmth::OwnedMemoryRegion::FromCapability(ahci.ahci_region());
   ASSIGN_OR_RETURN(auto driver, AhciDriver::Init(glcr::Move(ahci_region)));
 
   ASSIGN_OR_RETURN(glcr::UniquePtr<DenaliServer> server,

sys/denali/denali_server.cpp

@@ -2,7 +2,7 @@
 
 #include <glacier/memory/move.h>
 #include <glacier/status/error.h>
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 #include <zcall.h>
 
 glcr::ErrorOr<glcr::UniquePtr<DenaliServer>> DenaliServer::Create(
@@ -17,8 +17,8 @@ glcr::ErrorCode DenaliServer::HandleRead(const ReadRequest& req,
   ASSIGN_OR_RETURN(AhciDevice * device, driver_.GetDevice(req.device_id()));
 
   uint64_t paddr;
-  OwnedMemoryRegion region =
-      OwnedMemoryRegion::ContiguousPhysical(req.size() * 512, &paddr);
+  mmth::OwnedMemoryRegion region =
+      mmth::OwnedMemoryRegion::ContiguousPhysical(req.size() * 512, &paddr);
 
   DmaReadCommand command(req.lba(), req.size(), paddr);
   device->IssueCommand(&command);
@@ -44,8 +44,8 @@ glcr::ErrorCode DenaliServer::HandleReadMany(const ReadManyRequest& req,
     sector_cnt += req.sector_cnt().at(i);
   }
   uint64_t region_paddr;
-  OwnedMemoryRegion region =
-      OwnedMemoryRegion::ContiguousPhysical(sector_cnt * 512, &region_paddr);
+  mmth::OwnedMemoryRegion region = mmth::OwnedMemoryRegion::ContiguousPhysical(
+      sector_cnt * 512, &region_paddr);
 
   for (uint64_t i = 0; i < req.lba().size(); i++) {
     uint64_t lba = req.lba().at(i);

sys/denali/denali_server.h

@@ -1,7 +1,6 @@
 #pragma once
 
 #include <glacier/status/error.h>
-#include <mammoth/endpoint_server.h>
 
 #include "ahci/ahci_driver.h"
 #include "lib/denali/denali.yunq.server.h"

sys/denali/lib/denali/denali.yunq.server.cpp

@@ -1,7 +1,7 @@
 // Generated file -- DO NOT MODIFY.
 #include "denali.yunq.server.h"
 
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 #include <zcall.h>
 
 namespace {

sys/denali/lib/denali/denali.yunq.server.h

@@ -2,7 +2,7 @@
 #pragma once
 
 #include <glacier/status/error_or.h>
-#include <mammoth/thread.h>
+#include <mammoth/proc/thread.h>
 #include <ztypes.h>
 
 #include "denali.yunq.h"

sys/teton/framebuffer/console.cpp

@@ -1,6 +1,6 @@
 #include "framebuffer/console.h"
 
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 
 void Console::WriteChar(char c) {
   if (c == '\n') {

sys/teton/framebuffer/framebuffer.cpp

@@ -3,8 +3,8 @@
 Framebuffer::Framebuffer(const FramebufferInfo& info)
     : fb_info_(info), cursor_pos_(0) {
   uint64_t buff_size_bytes = fb_info_.height() * fb_info_.pitch();
-  fb_memory_ = OwnedMemoryRegion::DirectPhysical(fb_info_.address_phys(),
-                                                 buff_size_bytes);
+  fb_memory_ = mmth::OwnedMemoryRegion::DirectPhysical(fb_info_.address_phys(),
+                                                       buff_size_bytes);
   fb_ = reinterpret_cast<uint32_t*>(fb_memory_.vaddr());
 }
 

sys/teton/framebuffer/framebuffer.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <mammoth/memory_region.h>
+#include <mammoth/util/memory_region.h>
 #include <yellowstone/yellowstone.yunq.h>
 
 class Framebuffer {
@@ -19,7 +19,7 @@ class Framebuffer {
   // don't have to store a reference here.
   const FramebufferInfo& fb_info_;
 
-  OwnedMemoryRegion fb_memory_;
+  mmth::OwnedMemoryRegion fb_memory_;
   uint32_t* fb_;
   uint32_t cursor_pos_;
 };

sys/teton/framebuffer/psf.cpp

@@ -1,7 +1,7 @@
 #include "framebuffer/psf.h"
 
 #include <glacier/memory/move.h>
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 
 namespace {
 
@@ -9,9 +9,9 @@ const uint32_t kMagic = 0x864AB572;
 
 }
 
-Psf::Psf(OwnedMemoryRegion&& psf_file)
-    : psf_file_(glcr::Move(psf_file)),
-      header_(reinterpret_cast<PsfHeader*>(psf_file_.vaddr())) {
+Psf::Psf(glcr::StringView path)
+    : psf_file_(mmth::File::Open(path)),
+      header_(reinterpret_cast<PsfHeader*>(psf_file_.raw_ptr())) {
   EnsureValid();
 }
 

sys/teton/framebuffer/psf.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <mammoth/memory_region.h>
+#include <mammoth/file/file.h>
 
 struct PsfHeader {
   uint32_t magic;         /* magic bytes to identify PSF */
@@ -15,7 +15,7 @@ struct PsfHeader {
 
 class Psf {
  public:
-  Psf(OwnedMemoryRegion&& psf_file);
+  Psf(glcr::StringView path);
 
   void DumpHeader();
 
@@ -24,12 +24,13 @@ class Psf {
   uint32_t height() { return header_->height; }
 
   uint8_t* glyph(uint32_t index) {
-    return reinterpret_cast<uint8_t*>(psf_file_.vaddr() + header_->headersize +
+    return reinterpret_cast<uint8_t*>(psf_file_.byte_ptr() +
+                                      header_->headersize +
                                       (index * header_->bytesperglyph));
   }
 
  private:
-  OwnedMemoryRegion psf_file_;
+  mmth::File psf_file_;
   PsfHeader* header_;
 
   void EnsureValid();

sys/teton/teton.cpp

@@ -1,5 +1,5 @@
-#include <mammoth/debug.h>
-#include <mammoth/init.h>
+#include <mammoth/util/debug.h>
+#include <mammoth/util/init.h>
 #include <victoriafalls/victoriafalls.yunq.client.h>
 #include <yellowstone/yellowstone.yunq.client.h>
 
@@ -25,19 +25,7 @@ uint64_t main(uint64_t init_port) {
 
   // 2. Parse a font file.
 
-  GetEndpointRequest req;
-  req.set_endpoint_name("victoriafalls");
-  Endpoint resp;
-  check(client.GetEndpoint(req, resp));
-
-  VFSClient vfs(resp.endpoint());
-
-  OpenFileRequest freq;
-  freq.set_path("/default8x16.psfu");
-  OpenFileResponse fresp;
-  check(vfs.OpenFile(freq, fresp));
-
-  Psf psf(OwnedMemoryRegion::FromCapability(fresp.memory()));
+  Psf psf("/default8x16.psfu");
   psf.DumpHeader();
 
   Console console(fbuf, psf);

sys/victoriafalls/fs/ext2/ext2_block_reader.cpp

@@ -1,6 +1,6 @@
 #include "fs/ext2/ext2_block_reader.h"
 
-#include "mammoth/debug.h"
+#include <mammoth/util/debug.h>
 
 glcr::ErrorOr<glcr::SharedPtr<Ext2BlockReader>> Ext2BlockReader::Init(
     const DenaliInfo& denali_info) {
@@ -13,8 +13,8 @@ glcr::ErrorOr<glcr::SharedPtr<Ext2BlockReader>> Ext2BlockReader::Init(
   req.set_size(2);
   ReadResponse resp;
   RET_ERR(client.Read(req, resp));
-  OwnedMemoryRegion superblock =
-      OwnedMemoryRegion::FromCapability(resp.memory());
+  mmth::OwnedMemoryRegion superblock =
+      mmth::OwnedMemoryRegion::FromCapability(resp.memory());
 
   return glcr::SharedPtr<Ext2BlockReader>(
       new Ext2BlockReader(glcr::Move(client), denali_info.device_id(),
@@ -59,11 +59,11 @@ uint64_t Ext2BlockReader::InodeTableBlockSize() {
   return (InodeSize() * GetSuperblock()->inodes_per_group) / BlockSize();
 }
 
-glcr::ErrorOr<OwnedMemoryRegion> Ext2BlockReader::ReadBlock(
+glcr::ErrorOr<mmth::OwnedMemoryRegion> Ext2BlockReader::ReadBlock(
     uint64_t block_number) {
   return ReadBlocks(block_number, 1);
 }
-glcr::ErrorOr<OwnedMemoryRegion> Ext2BlockReader::ReadBlocks(
+glcr::ErrorOr<mmth::OwnedMemoryRegion> Ext2BlockReader::ReadBlocks(
     uint64_t block_number, uint64_t num_blocks) {
   ReadRequest req;
   req.set_device_id(device_id_);
@@ -71,10 +71,10 @@ glcr::ErrorOr<OwnedMemoryRegion> Ext2BlockReader::ReadBlocks(
   req.set_size(num_blocks * SectorsPerBlock());
   ReadResponse resp;
   RET_ERR(denali_.Read(req, resp));
-  return OwnedMemoryRegion::FromCapability(resp.memory());
+  return mmth::OwnedMemoryRegion::FromCapability(resp.memory());
 }
 
-glcr::ErrorOr<OwnedMemoryRegion> Ext2BlockReader::ReadBlocks(
+glcr::ErrorOr<mmth::OwnedMemoryRegion> Ext2BlockReader::ReadBlocks(
     const glcr::Vector<uint64_t>& block_list) {
   ReadManyRequest req;
   req.set_device_id(device_id_);
@@ -93,12 +93,12 @@ glcr::ErrorOr<OwnedMemoryRegion> Ext2BlockReader::ReadBlocks(
   dbgln("Read many: {x}", req.lba().size());
   ReadResponse resp;
   RET_ERR(denali_.ReadMany(req, resp));
-  return OwnedMemoryRegion::FromCapability(resp.memory());
+  return mmth::OwnedMemoryRegion::FromCapability(resp.memory());
 }
 
 Ext2BlockReader::Ext2BlockReader(DenaliClient&& denali, uint64_t device_id,
                                  uint64_t lba_offset,
-                                 OwnedMemoryRegion&& super_block)
+                                 mmth::OwnedMemoryRegion&& super_block)
     : denali_(glcr::Move(denali)),
       device_id_(device_id),
       lba_offset_(lba_offset),

sys/victoriafalls/fs/ext2/ext2_block_reader.h

@@ -3,7 +3,7 @@
 #include <denali/denali.yunq.client.h>
 #include <glacier/memory/shared_ptr.h>
 #include <glacier/status/error_or.h>
-#include <mammoth/memory_region.h>
+#include <mammoth/util/memory_region.h>
 #include <yellowstone/yellowstone.yunq.h>
 
 #include "fs/ext2/ext2.h"
@@ -29,21 +29,21 @@ class Ext2BlockReader {
   // because the last table will likely be smaller.
   uint64_t InodeTableBlockSize();
 
-  glcr::ErrorOr<OwnedMemoryRegion> ReadBlock(uint64_t block_number);
-  glcr::ErrorOr<OwnedMemoryRegion> ReadBlocks(uint64_t block_number,
-                                              uint64_t num_blocks);
+  glcr::ErrorOr<mmth::OwnedMemoryRegion> ReadBlock(uint64_t block_number);
+  glcr::ErrorOr<mmth::OwnedMemoryRegion> ReadBlocks(uint64_t block_number,
+                                                    uint64_t num_blocks);
 
-  glcr::ErrorOr<OwnedMemoryRegion> ReadBlocks(
+  glcr::ErrorOr<mmth::OwnedMemoryRegion> ReadBlocks(
       const glcr::Vector<uint64_t>& block_list);
 
  private:
   DenaliClient denali_;
   uint64_t device_id_;
   uint64_t lba_offset_;
-  OwnedMemoryRegion super_block_region_;
+  mmth::OwnedMemoryRegion super_block_region_;
 
   Ext2BlockReader(DenaliClient&& denali, uint64_t device_id,
-                  uint64_t lba_offset, OwnedMemoryRegion&& super_block);
+                  uint64_t lba_offset, mmth::OwnedMemoryRegion&& super_block);
 
   uint64_t SectorsPerBlock();
 };

sys/victoriafalls/fs/ext2/ext2_driver.cpp

@@ -1,14 +1,14 @@
 #include "fs/ext2/ext2_driver.h"
 
 #include <glacier/string/string.h>
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 
 glcr::ErrorOr<Ext2Driver> Ext2Driver::Init(const DenaliInfo& denali_info) {
   ASSIGN_OR_RETURN(glcr::SharedPtr<Ext2BlockReader> reader,
                    Ext2BlockReader::Init(glcr::Move(denali_info)));
 
   ASSIGN_OR_RETURN(
-      OwnedMemoryRegion bgdt,
+      mmth::OwnedMemoryRegion bgdt,
       reader->ReadBlocks(reader->BgdtBlockNum(), reader->BgdtBlockSize()));
   glcr::UniquePtr<InodeTable> inode_table(
       new InodeTable(reader, glcr::Move(bgdt)));
@@ -63,7 +63,7 @@ glcr::ErrorOr<glcr::Vector<DirEntry>> Ext2Driver::ReadDirectory(
   glcr::Vector<DirEntry> directory;
   for (uint64_t i = 0; i < real_block_cnt; i++) {
     dbgln("Getting block {x}", inode->block[i]);
-    ASSIGN_OR_RETURN(OwnedMemoryRegion block,
+    ASSIGN_OR_RETURN(mmth::OwnedMemoryRegion block,
                      ext2_reader_->ReadBlock(inode->block[i]));
     uint64_t addr = block.vaddr();
     while (addr < block.vaddr() + ext2_reader_->BlockSize()) {
@@ -86,7 +86,8 @@ glcr::ErrorOr<glcr::Vector<DirEntry>> Ext2Driver::ReadDirectory(
   return directory;
 }
 
-glcr::ErrorOr<OwnedMemoryRegion> Ext2Driver::ReadFile(uint64_t inode_number) {
+glcr::ErrorOr<mmth::OwnedMemoryRegion> Ext2Driver::ReadFile(
+    uint64_t inode_number) {
   ASSIGN_OR_RETURN(Inode * inode, inode_table_->GetInode(inode_number));
 
   if (!(inode->mode & 0x8000)) {
@@ -103,12 +104,13 @@ glcr::ErrorOr<OwnedMemoryRegion> Ext2Driver::ReadFile(uint64_t inode_number) {
     return glcr::UNIMPLEMENTED;
   }
 
+  mmth::OwnedMemoryRegion double_indirect_block;
   if (inode->block[13]) {
-    dbgln("Can't handle doubly-indirect blocks yet.");
-    return glcr::UNIMPLEMENTED;
+    ASSIGN_OR_RETURN(double_indirect_block,
+                     ext2_reader_->ReadBlock(inode->block[13]));
   }
 
-  OwnedMemoryRegion indirect_block;
+  mmth::OwnedMemoryRegion indirect_block;
   if (inode->block[12]) {
     ASSIGN_OR_RETURN(indirect_block, ext2_reader_->ReadBlock(inode->block[12]));
   }
@@ -118,10 +120,31 @@ glcr::ErrorOr<OwnedMemoryRegion> Ext2Driver::ReadFile(uint64_t inode_number) {
     blocks_to_read.PushBack(inode->block[i]);
   }
 
+  uint32_t* indr_block_array =
+      reinterpret_cast<uint32_t*>(indirect_block.vaddr());
   for (uint64_t i = 12; i < 268 && i < real_block_cnt; i++) {
-    uint32_t* block_array = reinterpret_cast<uint32_t*>(indirect_block.vaddr());
     uint64_t offset = i - 12;
-    blocks_to_read.PushBack(block_array[offset]);
+    blocks_to_read.PushBack(indr_block_array[offset]);
+  }
+
+  uint32_t* dbl_indr_block_array =
+      reinterpret_cast<uint32_t*>(double_indirect_block.vaddr());
+  for (uint64_t i = 0; i < 256; i++) {
+    uint64_t block = 268 + (256 * i);
+    if (block >= real_block_cnt) {
+      break;
+    }
+    ASSIGN_OR_RETURN(mmth::OwnedMemoryRegion single_indr_block,
+                     ext2_reader_->ReadBlock(dbl_indr_block_array[i]));
+    uint32_t* single_indr_block_array =
+        reinterpret_cast<uint32_t*>(single_indr_block.vaddr());
+    for (uint64_t j = 0; j < 256; j++) {
+      uint64_t block_inner = block + j;
+      if (block_inner >= real_block_cnt) {
+        break;
+      }
+      blocks_to_read.PushBack(single_indr_block_array[j]);
+    }
   }
 
   return ext2_reader_->ReadBlocks(blocks_to_read);

sys/victoriafalls/fs/ext2/ext2_driver.h

@@ -18,7 +18,7 @@ class Ext2Driver {
 
   glcr::ErrorOr<glcr::Vector<DirEntry>> ReadDirectory(uint32_t inode_number);
 
-  glcr::ErrorOr<OwnedMemoryRegion> ReadFile(uint64_t inode_number);
+  glcr::ErrorOr<mmth::OwnedMemoryRegion> ReadFile(uint64_t inode_number);
 
  private:
   glcr::SharedPtr<Ext2BlockReader> ext2_reader_;

sys/victoriafalls/fs/ext2/inode_table.cpp

@@ -1,9 +1,7 @@
 #include "fs/ext2/inode_table.h"
 
-#include <mammoth/debug.h>
-
 InodeTable::InodeTable(const glcr::SharedPtr<Ext2BlockReader>& reader,
-                       OwnedMemoryRegion&& bgdt_region)
+                       mmth::OwnedMemoryRegion&& bgdt_region)
     : ext2_reader_(reader),
       bgdt_region_(glcr::Move(bgdt_region)),
       bgdt_(reinterpret_cast<BlockGroupDescriptor*>(bgdt_region_.vaddr())) {

sys/victoriafalls/fs/ext2/inode_table.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <glacier/container/vector.h>
+#include <mammoth/util/memory_region.h>
 #include <stdint.h>
 
 #include "fs/ext2/ext2_block_reader.h"
@@ -8,16 +9,16 @@
 class InodeTable {
  public:
   InodeTable(const glcr::SharedPtr<Ext2BlockReader>& driver,
-             OwnedMemoryRegion&& bgdt_region);
+             mmth::OwnedMemoryRegion&& bgdt_region);
 
   glcr::ErrorOr<Inode*> GetInode(uint32_t inode_num);
 
  private:
   glcr::SharedPtr<Ext2BlockReader> ext2_reader_;
-  OwnedMemoryRegion bgdt_region_;
+  mmth::OwnedMemoryRegion bgdt_region_;
   BlockGroupDescriptor* bgdt_;
 
-  glcr::Vector<OwnedMemoryRegion> inode_tables_;
+  glcr::Vector<mmth::OwnedMemoryRegion> inode_tables_;
 
   glcr::ErrorOr<Inode*> GetRootOfInodeTable(uint64_t block_group_num);
 };

sys/victoriafalls/lib/victoriafalls/victoriafalls.yunq.server.cpp

@@ -1,7 +1,7 @@
 // Generated file -- DO NOT MODIFY.
 #include "victoriafalls.yunq.server.h"
 
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 #include <zcall.h>
 
 namespace {

sys/victoriafalls/lib/victoriafalls/victoriafalls.yunq.server.h

@@ -2,7 +2,7 @@
 #pragma once
 
 #include <glacier/status/error_or.h>
-#include <mammoth/thread.h>
+#include <mammoth/proc/thread.h>
 #include <ztypes.h>
 
 #include "victoriafalls.yunq.h"

sys/victoriafalls/victoriafalls.cpp

@@ -1,5 +1,5 @@
-#include <mammoth/debug.h>
-#include <mammoth/init.h>
+#include <mammoth/util/debug.h>
+#include <mammoth/util/init.h>
 #include <yellowstone/yellowstone.yunq.client.h>
 
 #include "fs/ext2/ext2_driver.h"

sys/victoriafalls/victoriafalls_server.cpp

@@ -1,7 +1,7 @@
 #include "victoriafalls_server.h"
 
 #include <glacier/string/str_split.h>
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 #include <zcall.h>
 
 glcr::ErrorOr<glcr::UniquePtr<VFSServer>> VFSServer::Create(
@@ -38,7 +38,7 @@ glcr::ErrorCode VFSServer::HandleOpenFile(const OpenFileRequest& request,
   }
 
   uint64_t inode_num;
-  OwnedMemoryRegion region;
+  mmth::OwnedMemoryRegion region;
   for (uint64_t j = 0; j < files.size(); j++) {
     if (path_tokens.at(path_tokens.size() - 1) ==
         glcr::StringView(files.at(j).name, files.at(j).name_len)) {

sys/yellowstone/hw/gpt.cpp

@@ -2,8 +2,8 @@
 
 #include <glacier/memory/move.h>
 #include <glacier/status/error.h>
-#include <mammoth/debug.h>
-#include <mammoth/memory_region.h>
+#include <mammoth/util/debug.h>
+#include <mammoth/util/memory_region.h>
 #include <zcall.h>
 #include <zglobal.h>
 
@@ -64,8 +64,8 @@ glcr::ErrorCode GptReader::ParsePartitionTables() {
   req.set_size(2);
   ReadResponse resp;
   RET_ERR(denali_->Read(req, resp));
-  OwnedMemoryRegion lba_1_and_2 =
-      OwnedMemoryRegion::FromCapability(resp.memory());
+  mmth::OwnedMemoryRegion lba_1_and_2 =
+      mmth::OwnedMemoryRegion::FromCapability(resp.memory());
   uint16_t* mbr_sig = reinterpret_cast<uint16_t*>(lba_1_and_2.vaddr() + 0x1FE);
   if (*mbr_sig != 0xAA55) {
     dbgln("Invalid MBR Sig: {x}", *mbr_sig);
@@ -106,8 +106,8 @@ glcr::ErrorCode GptReader::ParsePartitionTables() {
   req.set_lba(header->lba_partition_entries);
   req.set_size(num_blocks);
   RET_ERR(denali_->Read(req, resp));
-  OwnedMemoryRegion part_table =
-      OwnedMemoryRegion::FromCapability(resp.memory());
+  mmth::OwnedMemoryRegion part_table =
+      mmth::OwnedMemoryRegion::FromCapability(resp.memory());
   for (uint64_t i = 0; i < num_partitions; i++) {
     PartitionEntry* entry = reinterpret_cast<PartitionEntry*>(
         part_table.vaddr() + (i * entry_size));

sys/yellowstone/hw/pcie.cpp

@@ -1,7 +1,7 @@
 #include "hw/pcie.h"
 
-#include <mammoth/debug.h>
-#include <mammoth/init.h>
+#include <mammoth/util/debug.h>
+#include <mammoth/util/init.h>
 #include <zcall.h>
 
 #define PCI_DEBUG 0

sys/yellowstone/lib/yellowstone/yellowstone.yunq.server.cpp

@@ -1,7 +1,7 @@
 // Generated file -- DO NOT MODIFY.
 #include "yellowstone.yunq.server.h"
 
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 #include <zcall.h>
 
 namespace {

sys/yellowstone/lib/yellowstone/yellowstone.yunq.server.h

@@ -2,7 +2,7 @@
 #pragma once
 
 #include <glacier/status/error_or.h>
-#include <mammoth/thread.h>
+#include <mammoth/proc/thread.h>
 #include <ztypes.h>
 
 #include "yellowstone.yunq.h"

sys/yellowstone/yellowstone.cpp

@@ -1,10 +1,10 @@
 #include <glacier/string/str_format.h>
 #include <glacier/string/str_split.h>
-#include <mammoth/debug.h>
-#include <mammoth/endpoint_client.h>
-#include <mammoth/init.h>
-#include <mammoth/memory_region.h>
-#include <mammoth/process.h>
+#include <mammoth/file/file.h>
+#include <mammoth/proc/process.h>
+#include <mammoth/util/debug.h>
+#include <mammoth/util/init.h>
+#include <mammoth/util/memory_region.h>
 #include <zcall.h>
 #include <ztypes.h>
 
@@ -13,8 +13,9 @@
 #include "yellowstone_server.h"
 
 glcr::ErrorCode SpawnProcess(z_cap_t vmmo_cap, z_cap_t yellowstone_cap) {
-  OwnedMemoryRegion region = OwnedMemoryRegion::FromCapability(vmmo_cap);
-  return SpawnProcessFromElfRegion(region.vaddr(), yellowstone_cap);
+  mmth::OwnedMemoryRegion region =
+      mmth::OwnedMemoryRegion::FromCapability(vmmo_cap);
+  return mmth::SpawnProcessFromElfRegion(region.vaddr(), yellowstone_cap);
 }
 
 uint64_t main(uint64_t port_cap) {
@@ -27,38 +28,28 @@ uint64_t main(uint64_t port_cap) {
   ASSIGN_OR_RETURN(YellowstoneClient client1, server->CreateClient());
   check(SpawnProcess(gBootDenaliVmmoCap, client1.Capability()));
 
-  check(server->WaitDenaliRegistered());
+  server->WaitDenaliRegistered();
 
   ASSIGN_OR_RETURN(YellowstoneClient client2, server->CreateClient());
   check(SpawnProcess(gBootVictoriaFallsVmmoCap, client2.Capability()));
 
-  check(server->WaitVictoriaFallsRegistered());
+  server->WaitVictoriaFallsRegistered();
 
   dbgln("VFS Available.");
 
-  auto vfs_client = server->GetVFSClient();
-  OpenFileRequest request;
-  request.set_path("/init.txt");
-  OpenFileResponse response;
-  check(vfs_client->OpenFile(request, response));
+  mmth::File init_file = mmth::File::Open("/init.txt");
 
-  OwnedMemoryRegion filemem =
-      OwnedMemoryRegion::FromCapability(response.memory());
-  glcr::String file(reinterpret_cast<const char*>(filemem.vaddr()),
-                    response.size());
-
-  glcr::Vector<glcr::StringView> files = glcr::StrSplit(file, '\n');
+  glcr::Vector<glcr::StringView> files =
+      glcr::StrSplit(init_file.as_str(), '\n');
 
   for (uint64_t i = 0; i < files.size(); i++) {
     if (!files[i].empty()) {
-      dbgln("Starting {}", files[i]);
-      OpenFileRequest req;
-      req.set_path(glcr::StrFormat("/bin/{}", files[i]));
-      OpenFileResponse resp;
-      check(vfs_client->OpenFile(req, resp));
+      mmth::File binary =
+          mmth::File::Open(glcr::StrFormat("/bin/{}", files[i]));
 
       ASSIGN_OR_RETURN(YellowstoneClient client3, server->CreateClient());
-      check(SpawnProcess(resp.memory(), client3.Capability()));
+      check(mmth::SpawnProcessFromElfRegion((uint64_t)binary.raw_ptr(),
+                                            client3.Capability()));
     }
   }
 

sys/yellowstone/yellowstone_server.cpp

@@ -2,11 +2,12 @@
 
 #include <denali/denali.yunq.client.h>
 #include <glacier/string/string.h>
-#include <mammoth/debug.h>
-#include <mammoth/init.h>
-#include <mammoth/memory_region.h>
-#include <mammoth/process.h>
+#include <mammoth/file/file.h>
+#include <mammoth/util/debug.h>
+#include <mammoth/util/init.h>
+#include <mammoth/util/memory_region.h>
 #include <stdlib.h>
+#include <zcall.h>
 
 #include "hw/gpt.h"
 #include "hw/pcie.h"
@@ -34,21 +35,12 @@ glcr::ErrorOr<glcr::UniquePtr<YellowstoneServer>> YellowstoneServer::Create() {
   z_cap_t endpoint_cap;
   RET_ERR(ZEndpointCreate(&endpoint_cap));
 
-  ASSIGN_OR_RETURN(Mutex denali_mut, Mutex::Create());
-  RET_ERR(denali_mut.Lock());
-
-  ASSIGN_OR_RETURN(Mutex victoriafalls_mut, Mutex::Create());
-  RET_ERR(victoriafalls_mut.Lock());
-
-  return glcr::UniquePtr<YellowstoneServer>(new YellowstoneServer(
-      endpoint_cap, glcr::Move(denali_mut), glcr::Move(victoriafalls_mut)));
+  return glcr::UniquePtr<YellowstoneServer>(
+      new YellowstoneServer(endpoint_cap));
 }
 
-YellowstoneServer::YellowstoneServer(z_cap_t endpoint_cap, Mutex&& denali_mutex,
-                                     Mutex&& victoriafalls_mutex)
-    : YellowstoneServerBase(endpoint_cap),
-      has_denali_mutex_(glcr::Move(denali_mutex)),
-      has_victoriafalls_mutex_(glcr::Move(victoriafalls_mutex)) {}
+YellowstoneServer::YellowstoneServer(z_cap_t endpoint_cap)
+    : YellowstoneServerBase(endpoint_cap) {}
 
 glcr::ErrorCode YellowstoneServer::HandleGetAhciInfo(const Empty&,
                                                      AhciInfo& info) {
@@ -60,8 +52,8 @@ glcr::ErrorCode YellowstoneServer::HandleGetAhciInfo(const Empty&,
 glcr::ErrorCode YellowstoneServer::HandleGetFramebufferInfo(
     const Empty&, FramebufferInfo& info) {
   // FIXME: Don't do this for each request.
-  OwnedMemoryRegion region =
-      OwnedMemoryRegion::FromCapability(gBootFramebufferVmmoCap);
+  mmth::OwnedMemoryRegion region =
+      mmth::OwnedMemoryRegion::FromCapability(gBootFramebufferVmmoCap);
   ZFramebufferInfo* fb = reinterpret_cast<ZFramebufferInfo*>(region.vaddr());
 
   info.set_address_phys(fb->address_phys);
@@ -105,12 +97,12 @@ glcr::ErrorCode YellowstoneServer::HandleRegisterEndpoint(
     device_id_ = part_info_or.value().device_id;
     lba_offset_ = part_info_or.value().partition_lba;
 
-    check(has_denali_mutex_.Release());
+    has_denali_semaphore_.Signal();
   } else if (req.endpoint_name() == "victoriafalls") {
     // FIXME: Probably make a separate copy for use within yellowstone vs
     // transmit to other processes.
-    vfs_client_ = glcr::MakeShared<VFSClient>(req.endpoint_capability());
-    check(has_victoriafalls_mutex_.Release());
+    mmth::SetVfsCap(req.endpoint_capability());
+    has_victoriafalls_semaphore_.Signal();
   } else {
     dbgln("[WARN] Got endpoint cap type: {}", req.endpoint_name().cstr());
   }
@@ -129,16 +121,8 @@ glcr::ErrorCode YellowstoneServer::HandleGetEndpoint(
   return glcr::OK;
 }
 
-glcr::ErrorCode YellowstoneServer::WaitDenaliRegistered() {
-  RET_ERR(has_denali_mutex_.Lock());
-  return has_denali_mutex_.Release();
-}
+void YellowstoneServer::WaitDenaliRegistered() { has_denali_semaphore_.Wait(); }
 
-glcr::ErrorCode YellowstoneServer::WaitVictoriaFallsRegistered() {
-  RET_ERR(has_victoriafalls_mutex_.Lock());
-  return has_victoriafalls_mutex_.Release();
-}
-
-glcr::SharedPtr<VFSClient> YellowstoneServer::GetVFSClient() {
-  return vfs_client_;
+void YellowstoneServer::WaitVictoriaFallsRegistered() {
+  has_victoriafalls_semaphore_.Wait();
 }

sys/yellowstone/yellowstone_server.h

@@ -4,10 +4,7 @@
 #include <glacier/memory/shared_ptr.h>
 #include <glacier/memory/unique_ptr.h>
 #include <glacier/status/error_or.h>
-#include <mammoth/endpoint_server.h>
-#include <mammoth/mutex.h>
-#include <mammoth/port_server.h>
-#include <mammoth/thread.h>
+#include <mammoth/sync/semaphore.h>
 #include <victoriafalls/victoriafalls.yunq.client.h>
 
 #include "hw/pcie.h"
@@ -26,10 +23,8 @@ class YellowstoneServer : public YellowstoneServerBase {
   glcr::ErrorCode HandleGetEndpoint(const GetEndpointRequest&,
                                     Endpoint&) override;
 
-  glcr::ErrorCode WaitDenaliRegistered();
-  glcr::ErrorCode WaitVictoriaFallsRegistered();
-
-  glcr::SharedPtr<VFSClient> GetVFSClient();
+  void WaitDenaliRegistered();
+  void WaitVictoriaFallsRegistered();
 
  private:
   glcr::HashMap<glcr::String, z_cap_t> endpoint_map_;
@@ -40,9 +35,8 @@ class YellowstoneServer : public YellowstoneServerBase {
 
   PciReader pci_reader_;
 
-  Mutex has_denali_mutex_;
-  Mutex has_victoriafalls_mutex_;
+  mmth::Semaphore has_denali_semaphore_;
+  mmth::Semaphore has_victoriafalls_semaphore_;
 
-  YellowstoneServer(z_cap_t endpoint_cap, Mutex&& denali_mutex,
-                    Mutex&& victoriafalls_mutex);
+  YellowstoneServer(z_cap_t endpoint_cap);
 };

sysroot/init.txt

@@ -1 +1,2 @@
 teton
+

yunq/server.cpp.jinja

@@ -1,7 +1,7 @@
 // Generated file -- DO NOT MODIFY.
 #include "{{file}}.server.h"
 
-#include <mammoth/debug.h>
+#include <mammoth/util/debug.h>
 #include <zcall.h>
 
 namespace {

yunq/server.h.jinja

@@ -2,7 +2,7 @@
 #pragma once
 
 #include <glacier/status/error_or.h>
-#include <mammoth/thread.h>
+#include <mammoth/proc/thread.h>
 #include <ztypes.h>
 
 #include "{{file}}.h"