sysdeps/unix/sysv/linux/ia64/bits/msq.h

   1 /* Copyright (C) 2000 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3         Contribute by David Mosberger-Tang <davidm@hpl.hp.com>
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef _SYS_MSG_H
  21 #error "Never use <bits/msq.h> directly; include <sys/msg.h> instead."
  22 #endif
  23
  24 #include <sys/types.h>
  25
  26 /* Define options for message queue functions.  */
  27 #define MSG_NOERROR     010000  /* no error if message is too big */
  28 #define MSG_EXCEPT      020000  /* recv any msg except of specified type */
  29
  30
  31 /* Structure of record for one message inside the kernel.
  32    The type `struct __msg' is opaque.  */
  33 struct msqid_ds
  34 {
  35   struct ipc_perm msg_perm;     /* structure describing operation permission */
  36   __time_t msg_stime;           /* time of last msgsnd command */
  37   __time_t msg_rtime;           /* time of last msgrcv command */
  38   __time_t msg_ctime;           /* time of last change */
  39   unsigned long int __msg_cbytes;       /* current number of bytes on queue */
  40   unsigned long int msg_qnum;   /* number of messages currently on queue */
  41   unsigned long int msg_qbytes; /* max number of bytes allowed on queue */
  42   __pid_t msg_lspid;            /* pid of last msgsnd() */
  43   __pid_t msg_lrpid;            /* pid of last msgrcv() */
  44   unsigned long int __unused1;
  45   unsigned long int __unused2;
  46 };
  47
  48 #ifdef __USE_MISC
  49
  50 # define msg_cbytes     __msg_cbytes
  51
  52 /* ipcs ctl commands */
  53 # define MSG_STAT 11
  54 # define MSG_INFO 12
  55
  56 /* buffer for msgctl calls IPC_INFO, MSG_INFO */
  57 struct msginfo
  58   {
  59     int msgpool;
  60     int msgmap;
  61     int msgmax;
  62     int msgmnb;
  63     int msgmni;
  64     int msgssz;
  65     int msgtql;
  66     unsigned short int msgseg;
  67   };
  68
  69 #endif /* __USE_MISC */