Difference between revisions of "Truxton child file get size"

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This retrieves the file size of the child file object.
 
This retrieves the file size of the child file object.
 +
This corresponds to the <code>[OSLength]</code> column of the <code><nowiki>[</nowiki>[[File Table|File]]<nowiki>]</nowiki></code> table.
  
 
=Syntax=
 
=Syntax=
<syntaxhighlight lang="C">
+
<source lang="C">
 
uint64_t truxton_child_file_get_size( uint64_t child_handle );
 
uint64_t truxton_child_file_get_size( uint64_t child_handle );
</syntaxhighlight>
+
</source>
  
 
=Parameters=
 
=Parameters=
 
==<code>child_handle</code>==
 
==<code>child_handle</code>==
 
 
The handle created by the [[truxton_child_file_create]] or [[truxton_file_create_child]] call.
 
The handle created by the [[truxton_child_file_create]] or [[truxton_file_create_child]] call.
  
 
=Return=
 
=Return=
 
 
The size of the file as reported by the operating system.
 
The size of the file as reported by the operating system.
  
 
=Sample=
 
=Sample=
 
+
<source lang="C" highlight="28">
<syntaxhighlight lang="C" highlight="35">
+
void add_folder( uint64_t truxton, uint64_t parent_file )
void add_folder(uint64_t truxton, uint64_t parent_file)
 
 
{
 
{
   truxton_start_adding_files(truxton);
+
   truxton_start_adding_files( truxton );
  
   uint64_t child = truxton_child_file_create(truxton);
+
   uint64_t child = truxton_child_file_create( truxton );
  
 
   char id[40];
 
   char id[40];
  
   truxton_file_get_id(parent_file, id, sizeof(id));
+
   truxton_file_get_id( parent_file, id, sizeof(id) );
   truxton_child_file_set_parent_id(child, id);
+
   truxton_child_file_set_parent_id( child, id );
   truxton_child_file_set_type(child, Type_Directory);
+
   truxton_child_file_set_type( child, Type_Directory );
   truxton_child_file_set_name(child, "Custom Exploits Folder");
+
   truxton_child_file_set_name( child, "Custom Exploits Folder" );
 
 
  FILETIME now;
 
 
 
  GetSystemTimeAsFileTime(&now);
 
 
 
  ULARGE_INTEGER ticks;
 
  
   ticks.LowPart = now.dwLowDateTime;
+
   uint64_t now = truxton_time_now();
  ticks.HighPart = now.dwHighDateTime;
 
  
   truxton_child_file_set_created(child, ticks.QuadPart);
+
   truxton_child_file_set_created( child, now );
   truxton_child_file_set_accessed(child, ticks.QuadPart);
+
   truxton_child_file_set_accessed( child, now );
   truxton_child_file_set_modified(child, ticks.QuadPart);
+
   truxton_child_file_set_modified( child, now );
  
   truxton_child_file_set_origin(child, ORIGIN_GENERATED);
+
   truxton_child_file_set_origin( child, ORIGIN_GENERATED );
  
   if ( truxton_child_file_save(child) == 0 )
+
   if ( truxton_child_file_save( child ) == 0 )
 
   {
 
   {
 
       printf( "Failed to add child to Truxton\n" );
 
       printf( "Failed to add child to Truxton\n" );
Line 52: Line 43:
 
   else
 
   else
 
   {
 
   {
       uint64_t count = truxton_child_file_get_size(child_file);
+
       uint64_t count = truxton_child_file_get_size( child_file );
 
       printf( "File size is %" PRIu64 "\n", count );
 
       printf( "File size is %" PRIu64 "\n", count );
 
   }
 
   }
  
   truxton_child_file_destroy(child);
+
   truxton_child_file_destroy( child );
 
}
 
}
</syntaxhighlight>
+
</source>
  
 
Note, the <code>PRIu64</code> in the sample code above is the new standard way of [https://en.wikipedia.org/wiki/C_data_types#Printf_and_scanf_format_specifiers formatting] a 64-bit integer in C.
 
Note, the <code>PRIu64</code> in the sample code above is the new standard way of [https://en.wikipedia.org/wiki/C_data_types#Printf_and_scanf_format_specifiers formatting] a 64-bit integer in C.
 
Over the years, different compilers on different operating systems used different format specifiers for things, these <code>PRI</code> macros, along with some tricky string concatenation the compilers perform for you, allow you to maintain a single code base without a bunch of macro magic.
 
Over the years, different compilers on different operating systems used different format specifiers for things, these <code>PRI</code> macros, along with some tricky string concatenation the compilers perform for you, allow you to maintain a single code base without a bunch of macro magic.

Latest revision as of 02:56, 14 April 2024

This retrieves the file size of the child file object. This corresponds to the [OSLength] column of the [File] table.

Syntax

uint64_t truxton_child_file_get_size( uint64_t child_handle );

Parameters

child_handle

The handle created by the truxton_child_file_create or truxton_file_create_child call.

Return

The size of the file as reported by the operating system.

Sample

void add_folder( uint64_t truxton, uint64_t parent_file )
{
   truxton_start_adding_files( truxton );

   uint64_t child = truxton_child_file_create( truxton );

   char id[40];

   truxton_file_get_id( parent_file, id, sizeof(id) );
   truxton_child_file_set_parent_id( child, id );
   truxton_child_file_set_type( child, Type_Directory );
   truxton_child_file_set_name( child, "Custom Exploits Folder" );

   uint64_t now = truxton_time_now();

   truxton_child_file_set_created( child, now );
   truxton_child_file_set_accessed( child, now );
   truxton_child_file_set_modified( child, now );

   truxton_child_file_set_origin( child, ORIGIN_GENERATED );

   if ( truxton_child_file_save( child ) == 0 )
   {
      printf( "Failed to add child to Truxton\n" );
   }
   else
   {
      uint64_t count = truxton_child_file_get_size( child_file );
      printf( "File size is %" PRIu64 "\n", count );
   }

   truxton_child_file_destroy( child );
}

Note, the PRIu64 in the sample code above is the new standard way of formatting a 64-bit integer in C. Over the years, different compilers on different operating systems used different format specifiers for things, these PRI macros, along with some tricky string concatenation the compilers perform for you, allow you to maintain a single code base without a bunch of macro magic.