include/kernel/module.h

   1 /*
   2 ** Copyright 2001-2002, Thomas Kurschel. All rights reserved.
   3 ** Distributed under the terms of the NewOS License.
   4 */
   5
   6 #ifndef _KERNEL_MODULE_H
   7 #define _KERNEL_MODULE_H
   8
   9 #include <kernel/kernel.h>
  10 #include <boot/stage2.h>
  11
  12 #define MODULE_CURR_VERSION 0x10000
  13 // if set, module gets neither uninit'd nor unloaded
  14 #define MODULE_KEEP_LOADED 1
  15
  16 // user function list and management function lists are separated
  17 struct module_header {
  18         const char *name;                               // with path (for clients convinience)
  19         uint32 version;
  20         uint32 flags;
  21         void *interface;                                // pointer to function list
  22
  23         int ( *init )( void );
  24         int ( *uninit )( void );
  25 };
  26
  27 typedef struct modules_cookie {} *modules_cookie;
  28
  29 typedef struct module_header module_header;
  30
  31 // to become a module, export this symbol
  32 // it has to be a null-terminated list of pointers to module headers
  33 extern module_header *modules[];
  34
  35 // flags must be 0
  36 extern int module_get( const char *name, int flags, void **interface );
  37 extern int module_put( const char *name );
  38
  39 extern modules_cookie module_open_list( const char *prefix );
  40 extern int read_next_module_name( modules_cookie cookie, char *buf, size_t *bufsize );
  41 extern int close_module_list( modules_cookie cookie );
  42
  43
  44 // boot init
  45 // XXX this is very private, so move it away
  46 extern int module_init( kernel_args *ka, module_header **sys_module_headers );
  47
  48 #endif