chromium/mojo/public/c/system/thunks.cc

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "mojo/public/c/system/thunks.h"

#include <cstddef>
#include <cstdint>
#include <cstring>
#include <optional>
#include <string_view>
#include <vector>

#include "base/check_op.h"
#include "base/compiler_specific.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/no_destructor.h"
#include "base/notreached.h"
#include "build/build_config.h"
#include "mojo/public/c/system/core.h"
#include "mojo/public/c/system/data_pipe.h"
#include "mojo/public/c/system/invitation.h"
#include "mojo/public/c/system/macros.h"
#include "mojo/public/c/system/message_pipe.h"

namespace {

MojoGetSystemThunksFunction;

MojoSystemThunks2 g_thunks;

MojoResult NotImplemented(const char* name) { … }

}  // namespace

#define INVOKE_THUNK(name, ...) …

extern "C" {

MojoResult MojoInitialize(const struct MojoInitializeOptions* options) { … }

MojoTimeTicks MojoGetTimeTicksNow() { … }

MojoResult MojoClose(MojoHandle handle) { … }

MojoResult MojoQueryHandleSignalsState(
    MojoHandle handle,
    struct MojoHandleSignalsState* signals_state) { … }

MojoResult MojoCreateMessagePipe(const MojoCreateMessagePipeOptions* options,
                                 MojoHandle* message_pipe_handle0,
                                 MojoHandle* message_pipe_handle1) { … }

MojoResult MojoWriteMessage(MojoHandle message_pipe_handle,
                            MojoMessageHandle message_handle,
                            const MojoWriteMessageOptions* options) { … }

MojoResult MojoReadMessage(MojoHandle message_pipe_handle,
                           const MojoReadMessageOptions* options,
                           MojoMessageHandle* message_handle) { … }

MojoResult MojoFuseMessagePipes(MojoHandle handle0,
                                MojoHandle handle1,
                                const MojoFuseMessagePipesOptions* options) { … }

MojoResult MojoCreateDataPipe(const MojoCreateDataPipeOptions* options,
                              MojoHandle* data_pipe_producer_handle,
                              MojoHandle* data_pipe_consumer_handle) { … }

MojoResult MojoWriteData(MojoHandle data_pipe_producer_handle,
                         const void* elements,
                         uint32_t* num_elements,
                         const MojoWriteDataOptions* options) { … }

MojoResult MojoBeginWriteData(MojoHandle data_pipe_producer_handle,
                              const MojoBeginWriteDataOptions* options,
                              void** buffer,
                              uint32_t* buffer_num_elements) { … }

MojoResult MojoEndWriteData(MojoHandle data_pipe_producer_handle,
                            uint32_t num_elements_written,
                            const MojoEndWriteDataOptions* options) { … }

MojoResult MojoReadData(MojoHandle data_pipe_consumer_handle,
                        const MojoReadDataOptions* options,
                        void* elements,
                        uint32_t* num_elements) { … }

MojoResult MojoBeginReadData(MojoHandle data_pipe_consumer_handle,
                             const MojoBeginReadDataOptions* options,
                             const void** buffer,
                             uint32_t* buffer_num_elements) { … }

MojoResult MojoEndReadData(MojoHandle data_pipe_consumer_handle,
                           uint32_t num_elements_read,
                           const MojoEndReadDataOptions* options) { … }

MojoResult MojoCreateSharedBuffer(uint64_t num_bytes,
                                  const MojoCreateSharedBufferOptions* options,
                                  MojoHandle* shared_buffer_handle) { … }

MojoResult MojoDuplicateBufferHandle(
    MojoHandle buffer_handle,
    const MojoDuplicateBufferHandleOptions* options,
    MojoHandle* new_buffer_handle) { … }

MojoResult MojoMapBuffer(MojoHandle buffer_handle,
                         uint64_t offset,
                         uint64_t num_bytes,
                         const MojoMapBufferOptions* options,
                         void** buffer) { … }

MojoResult MojoUnmapBuffer(void* buffer) { … }

MojoResult MojoGetBufferInfo(MojoHandle buffer_handle,
                             const MojoGetBufferInfoOptions* options,
                             MojoSharedBufferInfo* info) { … }

MojoResult MojoCreateTrap(MojoTrapEventHandler handler,
                          const MojoCreateTrapOptions* options,
                          MojoHandle* trap_handle) { … }

MojoResult MojoAddTrigger(MojoHandle trap_handle,
                          MojoHandle handle,
                          MojoHandleSignals signals,
                          MojoTriggerCondition condition,
                          uintptr_t context,
                          const MojoAddTriggerOptions* options) { … }

MojoResult MojoRemoveTrigger(MojoHandle trap_handle,
                             uintptr_t context,
                             const MojoRemoveTriggerOptions* options) { … }

MojoResult MojoArmTrap(MojoHandle trap_handle,
                       const MojoArmTrapOptions* options,
                       uint32_t* num_blocking_events,
                       MojoTrapEvent* blocking_events) { … }

MojoResult MojoCreateMessage(const MojoCreateMessageOptions* options,
                             MojoMessageHandle* message) { … }

MojoResult MojoDestroyMessage(MojoMessageHandle message) { … }

MojoResult MojoSerializeMessage(MojoMessageHandle message,
                                const MojoSerializeMessageOptions* options) { … }

MojoResult MojoReserveMessageCapacity(MojoMessageHandle message,
                                      uint32_t payload_buffer_size,
                                      uint32_t* buffer_size) { … }

MojoResult MojoAppendMessageData(MojoMessageHandle message,
                                 uint32_t payload_size,
                                 const MojoHandle* handles,
                                 uint32_t num_handles,
                                 const MojoAppendMessageDataOptions* options,
                                 void** buffer,
                                 uint32_t* buffer_size) { … }

MojoResult MojoGetMessageData(MojoMessageHandle message,
                              const MojoGetMessageDataOptions* options,
                              void** buffer,
                              uint32_t* num_bytes,
                              MojoHandle* handles,
                              uint32_t* num_handles) { … }

MojoResult MojoSetMessageContext(MojoMessageHandle message,
                                 uintptr_t context,
                                 MojoMessageContextSerializer serializer,
                                 MojoMessageContextDestructor destructor,
                                 const MojoSetMessageContextOptions* options) { … }

MojoResult MojoGetMessageContext(MojoMessageHandle message,
                                 const MojoGetMessageContextOptions* options,
                                 uintptr_t* context) { … }

MojoResult MojoNotifyBadMessage(MojoMessageHandle message,
                                const char* error,
                                uint32_t error_num_bytes,
                                const MojoNotifyBadMessageOptions* options) { … }

MojoResult MojoWrapPlatformHandle(const MojoPlatformHandle* platform_handle,
                                  const MojoWrapPlatformHandleOptions* options,
                                  MojoHandle* mojo_handle) { … }

MojoResult MojoUnwrapPlatformHandle(
    MojoHandle mojo_handle,
    const MojoUnwrapPlatformHandleOptions* options,
    MojoPlatformHandle* platform_handle) { … }

MojoResult MojoWrapPlatformSharedMemoryRegion(
    const struct MojoPlatformHandle* platform_handles,
    uint32_t num_platform_handles,
    uint64_t num_bytes,
    const MojoSharedBufferGuid* guid,
    MojoPlatformSharedMemoryRegionAccessMode access_mode,
    const MojoWrapPlatformSharedMemoryRegionOptions* options,
    MojoHandle* mojo_handle) { … }

MojoResult MojoUnwrapPlatformSharedMemoryRegion(
    MojoHandle mojo_handle,
    const MojoUnwrapPlatformSharedMemoryRegionOptions* options,
    struct MojoPlatformHandle* platform_handles,
    uint32_t* num_platform_handles,
    uint64_t* num_bytes,
    struct MojoSharedBufferGuid* guid,
    MojoPlatformSharedMemoryRegionAccessMode* access_mode) { … }

MojoResult MojoCreateInvitation(const MojoCreateInvitationOptions* options,
                                MojoHandle* invitation_handle) { … }

MojoResult MojoAttachMessagePipeToInvitation(
    MojoHandle invitation_handle,
    const void* name,
    uint32_t name_num_bytes,
    const MojoAttachMessagePipeToInvitationOptions* options,
    MojoHandle* message_pipe_handle) { … }

MojoResult MojoExtractMessagePipeFromInvitation(
    MojoHandle invitation_handle,
    const void* name,
    uint32_t name_num_bytes,
    const MojoExtractMessagePipeFromInvitationOptions* options,
    MojoHandle* message_pipe_handle) { … }

MojoResult MojoSendInvitation(
    MojoHandle invitation_handle,
    const MojoPlatformProcessHandle* process_handle,
    const MojoInvitationTransportEndpoint* transport_endpoint,
    MojoProcessErrorHandler error_handler,
    uintptr_t error_handler_context,
    const MojoSendInvitationOptions* options) { … }

MojoResult MojoAcceptInvitation(
    const MojoInvitationTransportEndpoint* transport_endpoint,
    const MojoAcceptInvitationOptions* options,
    MojoHandle* invitation_handle) { … }

MojoResult MojoSetQuota(MojoHandle handle,
                        MojoQuotaType type,
                        uint64_t limit,
                        const MojoSetQuotaOptions* options) { … }

MojoResult MojoQueryQuota(MojoHandle handle,
                          MojoQuotaType type,
                          const MojoQueryQuotaOptions* options,
                          uint64_t* limit,
                          uint64_t* usage) { … }

MojoResult MojoShutdown(const MojoShutdownOptions* options) { … }

MojoResult MojoSetDefaultProcessErrorHandler(
    MojoDefaultProcessErrorHandler handler,
    const struct MojoSetDefaultProcessErrorHandlerOptions* options) { … }

MojoResult MojoClose32(MojoHandle32 handle) { … }

MojoResult MojoQueryHandleSignalsState32(
    MojoHandle32 handle,
    struct MojoHandleSignalsState* signals_state) { … }

MojoResult MojoCreateMessagePipe32(const MojoCreateMessagePipeOptions* options,
                                   MojoHandle32* message_pipe_handle0,
                                   MojoHandle32* message_pipe_handle1) { … }

MojoResult MojoWriteMessage32(MojoHandle32 message_pipe_handle,
                              MojoMessageHandle message_handle,
                              const MojoWriteMessageOptions* options) { … }

MojoResult MojoReadMessage32(MojoHandle32 message_pipe_handle,
                             const MojoReadMessageOptions* options,
                             MojoMessageHandle* message_handle) { … }

MojoResult MojoFuseMessagePipes32(MojoHandle32 handle0,
                                  MojoHandle32 handle1,
                                  const MojoFuseMessagePipesOptions* options) { … }

MojoResult MojoCreateDataPipe32(const MojoCreateDataPipeOptions* options,
                                MojoHandle32* data_pipe_producer_handle,
                                MojoHandle32* data_pipe_consumer_handle) { … }

MojoResult MojoWriteData32(MojoHandle32 data_pipe_producer_handle,
                           const void* elements,
                           uint32_t* num_elements,
                           const MojoWriteDataOptions* options) { … }

MojoResult MojoBeginWriteData32(MojoHandle32 data_pipe_producer_handle,
                                const MojoBeginWriteDataOptions* options,
                                void** buffer,
                                uint32_t* buffer_num_elements) { … }

MojoResult MojoEndWriteData32(MojoHandle32 data_pipe_producer_handle,
                              uint32_t num_elements_written,
                              const MojoEndWriteDataOptions* options) { … }

MojoResult MojoReadData32(MojoHandle32 data_pipe_consumer_handle,
                          const MojoReadDataOptions* options,
                          void* elements,
                          uint32_t* num_elements) { … }

MojoResult MojoBeginReadData32(MojoHandle32 data_pipe_consumer_handle,
                               const MojoBeginReadDataOptions* options,
                               const void** buffer,
                               uint32_t* buffer_num_elements) { … }

MojoResult MojoEndReadData32(MojoHandle32 data_pipe_consumer_handle,
                             uint32_t num_elements_read,
                             const MojoEndReadDataOptions* options) { … }

MojoResult MojoCreateSharedBuffer32(
    uint64_t num_bytes,
    const MojoCreateSharedBufferOptions* options,
    MojoHandle32* shared_buffer_handle) { … }

MojoResult MojoDuplicateBufferHandle32(
    MojoHandle32 buffer_handle,
    const MojoDuplicateBufferHandleOptions* options,
    MojoHandle32* new_buffer_handle) { … }

MojoResult MojoMapBuffer32(MojoHandle32 buffer_handle,
                           uint64_t offset,
                           uint64_t num_bytes,
                           const MojoMapBufferOptions* options,
                           void** buffer) { … }

MojoResult MojoGetBufferInfo32(MojoHandle32 buffer_handle,
                               const MojoGetBufferInfoOptions* options,
                               MojoSharedBufferInfo* info) { … }

MojoResult MojoCreateTrap32(MojoTrapEventHandler handler,
                            const MojoCreateTrapOptions* options,
                            MojoHandle32* trap_handle) { … }

MojoResult MojoAddTrigger32(MojoHandle32 trap_handle,
                            MojoHandle32 handle,
                            MojoHandleSignals signals,
                            MojoTriggerCondition condition,
                            uintptr_t context,
                            const MojoAddTriggerOptions* options) { … }

MojoResult MojoRemoveTrigger32(MojoHandle32 trap_handle,
                               uintptr_t context,
                               const MojoRemoveTriggerOptions* options) { … }

MojoResult MojoArmTrap32(MojoHandle32 trap_handle,
                         const MojoArmTrapOptions* options,
                         uint32_t* num_blocking_events,
                         MojoTrapEvent* blocking_events) { … }

MojoResult MojoAppendMessageData32(MojoMessageHandle message,
                                   uint32_t payload_size,
                                   const MojoHandle32* handles,
                                   uint32_t num_handles,
                                   const MojoAppendMessageDataOptions* options,
                                   void** buffer,
                                   uint32_t* buffer_size) { … }

MojoResult MojoGetMessageData32(MojoMessageHandle message,
                                const MojoGetMessageDataOptions* options,
                                void** buffer,
                                uint32_t* num_bytes,
                                MojoHandle32* handles,
                                uint32_t* num_handles) { … }

MojoResult MojoWrapPlatformHandle32(
    const MojoPlatformHandle* platform_handle,
    const MojoWrapPlatformHandleOptions* options,
    MojoHandle32* mojo_handle) { … }

MojoResult MojoUnwrapPlatformHandle32(
    MojoHandle32 mojo_handle,
    const MojoUnwrapPlatformHandleOptions* options,
    MojoPlatformHandle* platform_handle) { … }

MojoResult MojoWrapPlatformSharedMemoryRegion32(
    const struct MojoPlatformHandle* platform_handles,
    uint32_t num_platform_handles,
    uint64_t num_bytes,
    const MojoSharedBufferGuid* guid,
    MojoPlatformSharedMemoryRegionAccessMode access_mode,
    const MojoWrapPlatformSharedMemoryRegionOptions* options,
    MojoHandle32* mojo_handle) { … }

MojoResult MojoUnwrapPlatformSharedMemoryRegion32(
    MojoHandle32 mojo_handle,
    const MojoUnwrapPlatformSharedMemoryRegionOptions* options,
    struct MojoPlatformHandle* platform_handles,
    uint32_t* num_platform_handles,
    uint64_t* num_bytes,
    struct MojoSharedBufferGuid* guid,
    MojoPlatformSharedMemoryRegionAccessMode* access_mode) { … }

MojoResult MojoCreateInvitation32(const MojoCreateInvitationOptions* options,
                                  MojoHandle32* invitation_handle) { … }

MojoResult MojoAttachMessagePipeToInvitation32(
    MojoHandle32 invitation_handle,
    const void* name,
    uint32_t name_num_bytes,
    const MojoAttachMessagePipeToInvitationOptions* options,
    MojoHandle32* message_pipe_handle) { … }

MojoResult MojoExtractMessagePipeFromInvitation32(
    MojoHandle32 invitation_handle,
    const void* name,
    uint32_t name_num_bytes,
    const MojoExtractMessagePipeFromInvitationOptions* options,
    MojoHandle32* message_pipe_handle) { … }

MojoResult MojoSendInvitation32(
    MojoHandle32 invitation_handle,
    const MojoPlatformProcessHandle* process_handle,
    const MojoInvitationTransportEndpoint* transport_endpoint,
    MojoProcessErrorHandler error_handler,
    uintptr_t error_handler_context,
    const MojoSendInvitationOptions* options) { … }

MojoResult MojoAcceptInvitation32(
    const MojoInvitationTransportEndpoint* transport_endpoint,
    const MojoAcceptInvitationOptions* options,
    MojoHandle32* invitation_handle) { … }

MojoResult MojoSetQuota32(MojoHandle32 handle,
                          MojoQuotaType type,
                          uint64_t limit,
                          const MojoSetQuotaOptions* options) { … }

MojoResult MojoQueryQuota32(MojoHandle32 handle,
                            MojoQuotaType type,
                            const MojoQueryQuotaOptions* options,
                            uint64_t* limit,
                            uint64_t* usage) { … }

MojoSystemThunks32 g_thunks_32 = …;

const MojoSystemThunks2* MojoEmbedderGetSystemThunks2() { … }

const MojoSystemThunks32* MojoEmbedderGetSystemThunks32() { … }

void MojoEmbedderSetSystemThunks(const MojoSystemThunks2* thunks) { … }

}  // extern "C"