kernel2/include/ipc/msg.h

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #ifndef _SYS_MSG_H_
  20 #define _SYS_MSG_H_
  21
  22 #include <sys/types.h>
  23 #include <ipc.h>
  24
  25 typedef struct {
  26   ipc_obj_t ipc;
  27   llist_t msgs;
  28   llist_t waiting;
  29
  30   mode_t mode;
  31   pid_t lrpid;
  32   pid_t lspid;
  33   time_t stime;
  34   time_t rtime;
  35   time_t ctime;
  36 } ipc_msg_t;
  37
  38 typedef struct {
  39   ipc_msg_t *msg;
  40   void *data;
  41   size_t size;
  42   long type;
  43   int flags;
  44   proc_t *sender;
  45 } ipc_msg_msg_t;
  46
  47 id_t ipc_msg_lastid;
  48
  49 int ipc_msg_init();
  50 id_t ipc_msg_get(key_t key);
  51 id_t ipc_msg_create(key_t key,mode_t mode,time_t time);
  52 int ipc_msg_destroy(id_t id);
  53 int ipc_msg_send(id_t id,void *data,size_t msgsz,long type,int flags,time_t time);
  54 ssize_t ipc_msg_recv(id_t id,void *data,size_t msgsz,long type,int flags,time_t time);
  55 int msg_stat(id_t id,uid_t *uid,gid_t *gid,uid_t *cuid,gid_t *cgid,mode_t *mode,size_t *num,pid_t *lspid,pid_t *lrpid,time_t *stime,time_t *rtime,time_t *ctime);
  56 int msg_set(id_t id,uid_t uid,gid_t gid,mode_t mode,time_t time);
  57
  58 #endif