propogate const-ness outward

Author: Riolku

dmoj/cptbox/_cptbox.pyx

@@ -120,12 +120,12 @@ cdef extern from 'helper.h' nogil:
         int stderr_
         int abi_for_seccomp
         int *seccomp_handlers
-        char **read_exact_files
-        char **read_exact_dirs
-        char **read_recursive_dirs
-        char **write_exact_files
-        char **write_exact_dirs
-        char **write_recursive_dirs
+        const char **read_exact_files
+        const char **read_exact_dirs
+        const char **read_recursive_dirs
+        const char **write_exact_files
+        const char **write_exact_dirs
+        const char **write_recursive_dirs
 
     int has_landlock_check()
     void cptbox_closefrom(int lowfd)
@@ -531,12 +531,12 @@ cdef class Process:
                 for i in range(MAX_SYSCALL):
                     config.seccomp_handlers[i] = handlers[i]
 
-            config.read_exact_files = alloc_byte_array(self.read_exact_files)
-            config.read_exact_dirs = alloc_byte_array(self.read_exact_dirs)
-            config.read_recursive_dirs = alloc_byte_array(self.read_recursive_dirs)
-            config.write_exact_files = alloc_byte_array(self.write_exact_files)
-            config.write_exact_dirs = alloc_byte_array(self.write_exact_dirs)
-            config.write_recursive_dirs = alloc_byte_array(self.write_recursive_dirs)
+            config.read_exact_files = <const char**>alloc_byte_array(self.read_exact_files)
+            config.read_exact_dirs = <const char**>alloc_byte_array(self.read_exact_dirs)
+            config.read_recursive_dirs = <const char**>alloc_byte_array(self.read_recursive_dirs)
+            config.write_exact_files = <const char**>alloc_byte_array(self.write_exact_files)
+            config.write_exact_dirs = <const char**>alloc_byte_array(self.write_exact_dirs)
+            config.write_recursive_dirs = <const char**>alloc_byte_array(self.write_recursive_dirs)
 
             if self.process.spawn(pt_child, &config):
                 raise RuntimeError('failed to spawn child')

dmoj/cptbox/helper.h

@@ -23,12 +23,12 @@ struct child_config {
     int stdout_;
     int stderr_;
     int *seccomp_handlers;
-    char **read_exact_files;
-    char **read_exact_dirs;
-    char **read_recursive_dirs;
-    char **write_exact_files;
-    char **write_exact_dirs;
-    char **write_recursive_dirs;
+    const char **read_exact_files;
+    const char **read_exact_dirs;
+    const char **read_recursive_dirs;
+    const char **write_exact_files;
+    const char **write_exact_dirs;
+    const char **write_recursive_dirs;
 };
 
 int has_landlock_check();