feat: add configuration for YR_CONFIG_MAX_PROCESS_MEMORY_CHUNK

src/internals/configuration.rs

@@ -38,6 +38,18 @@ pub fn set_max_match_data(value: u32) -> Result<(), YaraError> {
     }
 }
 
+/// Set the maximum size of chunks scanned from a process memory.
+///
+/// This is mapped to the YR_CONFIG_MAX_PROCESS_MEMORY_CHUNK property.
+pub fn set_max_process_memory_chunk(value: u64) -> Result<(), YaraError> {
+    unsafe {
+        set_cfg(
+            yara_sys::_YR_CONFIG_NAME_YR_CONFIG_MAX_PROCESS_MEMORY_CHUNK,
+            &value as *const u64 as *mut c_void,
+        )
+    }
+}
+
 /// Get the stack size.
 ///
 /// This is mapped to the YR_CONFIG_STACK_SIZE property.
@@ -59,6 +71,13 @@ pub fn get_max_match_data() -> Result<u32, YaraError> {
     unsafe { get_cfg(yara_sys::_YR_CONFIG_NAME_YR_CONFIG_MAX_MATCH_DATA) }
 }
 
+/// Get the maximum size of chunks scanned from a process memory.
+///
+/// This is mapped to the YR_CONFIG_MAX_PROCESS_MEMORY_CHUNK property.
+pub fn get_max_process_memory_chunk() -> Result<u64, YaraError> {
+    unsafe { get_cfg(yara_sys::_YR_CONFIG_NAME_YR_CONFIG_MAX_PROCESS_MEMORY_CHUNK) }
+}
+
 /// Safety:
 ///
 /// The value pointer must point to a value of the right size for the given config.

src/lib.rs

@@ -156,6 +156,11 @@ impl Yara {
         configuration::set_max_match_data(value)
     }
 
+    /// Set the maximum size of chunks scanned from a process memory.
+    pub fn set_configuration_max_process_memory_chunk(&self, value: u64) -> Result<(), YaraError> {
+        configuration::set_max_process_memory_chunk(value)
+    }
+
     /// Get the configured stack size.
     pub fn get_configuration_stack_size(&self) -> Result<u32, YaraError> {
         configuration::get_stack_size()
@@ -171,6 +176,11 @@ impl Yara {
         configuration::get_max_match_data()
     }
 
+    /// Get the maximum size of chunks scanned from a process memory.
+    pub fn get_configuration_max_process_memory_chunk(&self) -> Result<u64, YaraError> {
+        configuration::get_max_process_memory_chunk()
+    }
+
     /// Create and initialize the library.
     #[deprecated = "Use new"]
     pub fn create() -> Result<Yara, YaraError> {

tests/tests.rs

@@ -66,6 +66,14 @@ fn test_configuration() {
     let yara = Yara::new().expect("Should be Ok");
     assert_eq!(Ok(()), yara.set_configuration_stack_size(100));
     assert_eq!(Ok(100), yara.get_configuration_stack_size());
+    assert_eq!(
+        Ok(()),
+        yara.set_configuration_max_process_memory_chunk(u64::MAX)
+    );
+    assert_eq!(
+        Ok(u64::MAX),
+        yara.get_configuration_max_process_memory_chunk()
+    );
 }
 
 #[test]