Fixes to:

.github/workflows/fork_checker.yml

@@ -0,0 +1,36 @@
+name: micro-ROS fork Update Checker
+on:
+  workflow_dispatch:
+    inputs:
+      name:
+        description: "Manual trigger"
+  schedule:
+    - cron:  '0 4 * * *'
+
+jobs:
+    micro_ros_fork_update_check:
+        runs-on: ubuntu-latest
+        container: ubuntu:20.04
+        strategy:
+          fail-fast: false
+          matrix:
+            branches: [humble, iron, rolling]
+        steps:
+          - name: Check
+            id: check
+            shell: bash
+            run: |
+              apt update; apt install -y git
+              REPO=$(echo ${{ github.repository }} | awk '{split($0,a,"/"); print a[2]}')
+              git clone -b ${{ matrix.branches }} https://github.com/micro-ros/$REPO
+              cd $REPO
+              git remote add ros2 https://github.com/ros2/$REPO
+              git fetch ros2
+              git fetch origin
+              echo "::set-output name=merge_required::true"
+              CMP=$(git rev-list --left-right --count ros2/${{ matrix.branches }}...origin/${{ matrix.branches }} | awk '{print $1}')
+              if [ $CMP = "0" ]; then echo "::set-output name=merge_required::false"; fi
+
+          - name: Alert
+            if: ${{ steps.check.outputs.merge_required  == 'true' }}
+            run: exit 1

CMakeLists.txt

@@ -2,6 +2,12 @@ cmake_minimum_required(VERSION 3.12)
 
 project(rcutils)
 
+option(RCUTILS_NO_THREAD_SUPPORT "Disable thread support." OFF)
+option(RCUTILS_NO_FILESYSTEM "Disable filesystem usage." OFF)
+option(RCUTILS_AVOID_DYNAMIC_ALLOCATION "Disable dynamic allocations." OFF)
+option(RCUTILS_NO_64_ATOMIC "Enable alternative support for 64 bits atomic operations in platforms with no native support." OFF)
+option(RCUTILS_MICROROS "Flag for building micro-ROS." ON)
+
 # Default to C11
 if(NOT CMAKE_C_STANDARD)
   set(CMAKE_C_STANDARD 11)
@@ -30,7 +36,7 @@ if(UNIX AND NOT APPLE)
   endif()
 endif()
 
-if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+if(NOT RCUTILS_MICROROS AND (CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
   # enables building a static library but later link it into a dynamic library
   add_compile_options(-fPIC)
 endif()
@@ -76,6 +82,7 @@ set(rcutils_sources
   src/time.c
   ${time_impl_c}
   src/uint8_array.c
+  $<$<BOOL:${RCUTILS_NO_64_ATOMIC}>:src/atomic_64bits.c>
 )
 set_source_files_properties(
   ${rcutils_sources}
@@ -130,8 +137,14 @@ target_compile_definitions(${PROJECT_NAME} PRIVATE "RCUTILS_BUILDING_DLL")
 if(BUILD_TESTING AND NOT RCUTILS_DISABLE_FAULT_INJECTION)
   target_compile_definitions(${PROJECT_NAME} PUBLIC RCUTILS_ENABLE_FAULT_INJECTION)
 endif()
+configure_file(
+    "${PROJECT_SOURCE_DIR}/include/rcutils/configuration_flags.h.in"
+    "${PROJECT_BINARY_DIR}/include/rcutils/configuration_flags.h"
+)
 
-target_link_libraries(${PROJECT_NAME} ${CMAKE_DL_LIBS})
+if(NOT RCUTILS_NO_FILESYSTEM)
+  target_link_libraries(${PROJECT_NAME} ${CMAKE_DL_LIBS})
+endif()
 
 # Needed if pthread is used for thread local storage.
 if(IOS AND IOS_SDK_VERSION LESS 10.0)

include/rcutils/allocator.h

@@ -85,6 +85,21 @@ RCUTILS_WARN_UNUSED
 rcutils_allocator_t
 rcutils_get_zero_initialized_allocator(void);
 
+/// Set rcutils default allocators.
+/**
+ * <hr>
+ * Attribute          | Adherence
+ * ------------------ | -------------
+ * Allocates Memory   | No
+ * Thread-Safe        | Yes
+ * Uses Atomics       | No
+ * Lock-Free          | Yes
+ */
+RCUTILS_PUBLIC
+RCUTILS_WARN_UNUSED
+bool
+rcutils_set_default_allocator(rcutils_allocator_t * allocator);
+
 /// Return a properly initialized rcutils_allocator_t with default values.
 /**
  * This defaults to:

include/rcutils/configuration_flags.h.in

@@ -0,0 +1,18 @@
+
+#ifndef RCUTILS__CONFIGURATION_FLAGS_H_
+#define RCUTILS__CONFIGURATION_FLAGS_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#cmakedefine RCUTILS_NO_FILESYSTEM
+#cmakedefine RCUTILS_AVOID_DYNAMIC_ALLOCATION
+#cmakedefine RCUTILS_NO_THREAD_SUPPORT
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // RCUTILS__CONFIGURATION_FLAGS_H_

include/rcutils/error_handling.h

@@ -39,19 +39,21 @@ extern "C"
 #include "rcutils/testing/fault_injection.h"
 #include "rcutils/types/rcutils_ret.h"
 #include "rcutils/visibility_control.h"
+#include "rcutils/configuration_flags.h"
 
-#ifdef __STDC_LIB_EXT1__
+#if defined(__STDC_LIB_EXT1__) && !defined(RCUTILS_NO_FILESYSTEM)
 /// Write the given msg out to stderr, limiting the buffer size in the `fwrite`.
 /**
  * This ensures that there is an upper bound to a buffer overrun if `msg` is
  * non-null terminated.
  */
 #define RCUTILS_SAFE_FWRITE_TO_STDERR(msg) \
   do {fwrite(msg, sizeof(char), strnlen_s(msg, 4096), stderr);} while (0)
-#else
-/// Write the given msg out to stderr.
+#elif !defined(RCUTILS_NO_FILESYSTEM)
 #define RCUTILS_SAFE_FWRITE_TO_STDERR(msg) \
   do {fwrite(msg, sizeof(char), strlen(msg), stderr);} while (0)
+#else
+  #define RCUTILS_SAFE_FWRITE_TO_STDERR(msg)
 #endif
 
 /// Set the error message to stderr using a format string and format arguments.
@@ -63,6 +65,8 @@ extern "C"
  * \param[in] format_string The string to be used as the format of the error message.
  * \param[in] ... Arguments for the format string.
  */
+
+#if !defined(RCUTILS_AVOID_DYNAMIC_ALLOCATION)
 #define RCUTILS_SAFE_FWRITE_TO_STDERR_WITH_FORMAT_STRING(format_string, ...) \
   do { \
     char output_msg[RCUTILS_ERROR_MESSAGE_MAX_LENGTH]; \
@@ -73,7 +77,11 @@ extern "C"
       RCUTILS_SAFE_FWRITE_TO_STDERR(output_msg); \
     } \
   } while (0)
+#else
+#define RCUTILS_SAFE_FWRITE_TO_STDERR_WITH_FORMAT_STRING(format_string, ...)
+#endif
 
+#if !defined(RCUTILS_AVOID_DYNAMIC_ALLOCATION)
 /// The maximum length a formatted number is allowed to have.
 #define RCUTILS_ERROR_STATE_LINE_NUMBER_STR_MAX_LENGTH 20  // "18446744073709551615"
 
@@ -100,6 +108,13 @@ extern "C"
     RCUTILS_ERROR_STATE_LINE_NUMBER_STR_MAX_LENGTH - \
     RCUTILS_ERROR_FORMATTING_CHARACTERS - \
     1)
+#else
+#define RCUTILS_ERROR_STATE_LINE_NUMBER_STR_MAX_LENGTH 1
+#define RCUTILS_ERROR_FORMATTING_CHARACTERS 1
+#define RCUTILS_ERROR_MESSAGE_MAX_LENGTH 1
+#define RCUTILS_ERROR_STATE_MESSAGE_MAX_LENGTH 1
+#define RCUTILS_ERROR_STATE_FILE_MAX_LENGTH 1
+#endif  // RCUTILS_AVOID_DYNAMIC_ALLOCATION
 
 /// Struct wrapping a fixed-size c string used for returning the formatted error string.
 typedef struct rcutils_error_string_s
@@ -121,7 +136,7 @@ typedef struct rcutils_error_state_s
 } rcutils_error_state_t;
 
 // make sure our math is right...
-#if __STDC_VERSION__ >= 201112L
+#if __STDC_VERSION__ >= 201112L && !defined(RCUTILS_AVOID_DYNAMIC_ALLOCATION)
 static_assert(
   sizeof(rcutils_error_string_t) == (
     RCUTILS_ERROR_STATE_MESSAGE_MAX_LENGTH +
@@ -233,8 +248,12 @@ rcutils_set_error_state(const char * error_string, const char * file, size_t lin
  *
  * \param[in] msg The error message to be set.
  */
+#ifdef RCUTILS_AVOID_DYNAMIC_ALLOCATION
+  #define RCUTILS_SET_ERROR_MSG(msg)
+#else
 #define RCUTILS_SET_ERROR_MSG(msg) \
   do {rcutils_set_error_state(msg, __FILE__, __LINE__);} while (0)
+#endif // RCUTILS_AVOID_DYNAMIC_ALLOCATION
 
 /// Set the error message using a format string and format arguments.
 /**
@@ -245,6 +264,9 @@ rcutils_set_error_state(const char * error_string, const char * file, size_t lin
  * \param[in] format_string The string to be used as the format of the error message.
  * \param[in] ... Arguments for the format string.
  */
+#ifdef RCUTILS_AVOID_DYNAMIC_ALLOCATION
+  #define RCUTILS_SET_ERROR_MSG_WITH_FORMAT_STRING(format_string, ...)
+#else
 #define RCUTILS_SET_ERROR_MSG_WITH_FORMAT_STRING(format_string, ...) \
   do { \
     char output_msg[RCUTILS_ERROR_MESSAGE_MAX_LENGTH]; \
@@ -255,6 +277,8 @@ rcutils_set_error_state(const char * error_string, const char * file, size_t lin
       RCUTILS_SET_ERROR_MSG(output_msg); \
     } \
   } while (0)
+#endif // RCUTILS_AVOID_DYNAMIC_ALLOCATION
+
 
 /// Indicate that the function intends to set an error message and return an error value.
 /**

include/rcutils/logging.h

@@ -40,7 +40,7 @@ extern "C"
  * \def RCUTILS_DEFAULT_LOGGER_DEFAULT_LEVEL
  * \brief The default severity level of the default logger.
  */
-#define RCUTILS_DEFAULT_LOGGER_DEFAULT_LEVEL RCUTILS_LOG_SEVERITY_INFO
+#define RCUTILS_DEFAULT_LOGGER_DEFAULT_LEVEL RCUTILS_LOG_SEVERITY_UNSET
 
 /// The flag if the logging system has been initialized.
 RCUTILS_PUBLIC

include/rcutils/macros.h

@@ -22,6 +22,8 @@ extern "C"
 {
 #endif
 
+#include "rcutils/configuration_flags.h"
+
 #ifndef _WIN32
 /// A macro to make the compiler warn when the return value of a function is not used.
 #define RCUTILS_WARN_UNUSED __attribute__((warn_unused_result))
@@ -32,7 +34,9 @@ extern "C"
 
 /// \cond Doxygen_Suppress
 // This block either sets RCUTILS_THREAD_LOCAL or RCUTILS_THREAD_LOCAL_PTHREAD.
-#if defined _WIN32 || defined __CYGWIN__
+#if defined(RCUTILS_NO_THREAD_SUPPORT)
+    #define RCUTILS_THREAD_LOCAL
+#elif defined _WIN32 || defined __CYGWIN__
 // Windows or Cygwin
   #define RCUTILS_THREAD_LOCAL __declspec(thread)
 #elif defined __APPLE__

include/rcutils/security_directory.h

@@ -0,0 +1,67 @@
+// Copyright 2018 Open Source Robotics Foundation, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef RCUTILS__SECURITY_DIRECTORY_H_
+#define RCUTILS__SECURITY_DIRECTORY_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include "rcutils/allocator.h"
+#include "rcutils/visibility_control.h"
+
+#ifndef ROS_SECURITY_NODE_DIRECTORY_VAR_NAME
+  #define ROS_SECURITY_NODE_DIRECTORY_VAR_NAME "ROS_SECURITY_NODE_DIRECTORY"
+#endif
+
+#ifndef ROS_SECURITY_ROOT_DIRECTORY_VAR_NAME
+  #define ROS_SECURITY_ROOT_DIRECTORY_VAR_NAME "ROS_SECURITY_ROOT_DIRECTORY"
+#endif
+
+#ifndef ROS_SECURITY_LOOKUP_TYPE_VAR_NAME
+  #define ROS_SECURITY_LOOKUP_TYPE_VAR_NAME "ROS_SECURITY_LOOKUP_TYPE"
+#endif
+
+/// Return the secure root directory associated with a node given its validated name and namespace.
+/**
+ * E.g. for a node named "c" in namespace "/a/b", the secure root path will be
+ * "a/b/c", where the delimiter "/" is native for target file system (e.g. "\\" for _WIN32).
+ * If no exact match is found for the node name, a best match would be used instead
+ * (by performing longest-prefix matching).
+ *
+ * However, this expansion can be overridden by setting the secure node directory environment
+ * variable, allowing users to explicitly specify the exact secure root directory to be utilized.
+ * Such an override is useful for where the FQN of a node is non-deterministic before runtime,
+ * or when testing and using additional tools that may not otherwise be easily provisioned.
+ *
+ * \param[in] node_name validated node name (a single token)
+ * \param[in] node_namespace validated, absolute namespace (starting with "/")
+ * \param[in] allocator the allocator to use for allocation
+ * \returns machine specific (absolute) node secure root path or NULL on failure
+ *          returned pointer must be deallocated by the caller of this function
+ */
+RCUTILS_PUBLIC
+char * rcutils_get_secure_root(
+  const char * node_name,
+  const char * node_namespace,
+  const rcutils_allocator_t * allocator
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // RCUTILS__SECURITY_DIRECTORY_H_

include/rcutils/testing/fault_injection.h

@@ -83,6 +83,8 @@ RCUTILS_WARN_UNUSED
 int_least64_t
 _rcutils_fault_injection_maybe_fail(void);
 
+#ifdef RCUTILS_ENABLE_FAULT_INJECTION
+
 /**
  * \def RCUTILS_FAULT_INJECTION_MAYBE_RETURN_ERROR
  * \brief This macro checks and decrements a static global variable atomic counter and returns
@@ -199,6 +201,17 @@ _rcutils_fault_injection_maybe_fail(void);
     rcutils_fault_injection_set_count(no_fault_injection_count); \
   } while (0)
 
+#else
+
+// Mocks for micro-ROS when fault injection not enabled
+
+#define RCUTILS_FAULT_INJECTION_MAYBE_RETURN_ERROR(return_value_on_error)
+#define RCUTILS_FAULT_INJECTION_MAYBE_FAIL(failure_code)
+#define RCUTILS_FAULT_INJECTION_TEST(code)
+#define RCUTILS_NO_FAULT_INJECTION(code) 
+
+#endif
+
 #ifdef __cplusplus
 }
 #endif

resource/logging_macros.h.em

@@ -51,7 +51,7 @@ extern "C"
  * Use RCUTILS_LOG_MIN_SEVERITY_NONE to compile out all macros.
  */
 #ifndef RCUTILS_LOG_MIN_SEVERITY
-#define RCUTILS_LOG_MIN_SEVERITY RCUTILS_LOG_MIN_SEVERITY_DEBUG
+#define RCUTILS_LOG_MIN_SEVERITY RCUTILS_LOG_MIN_SEVERITY_NONE
 #endif
 
 // TODO(dhood): optimise severity check via notifyLoggerLevelsChanged concept or similar.