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

   1 /* Copyright (C) 2000-2016 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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SYS_MSG_H
  20 #error "Never use <bits/msq.h> directly; include <sys/msg.h> instead."
  21 #endif
  22
  23 #include <bits/types.h>
  24
  25 /* Define options for message queue functions.  */
  26 #define MSG_NOERROR     010000  /* no error if message is too big */
  27 #ifdef __USE_GNU
  28 # define MSG_EXCEPT     020000  /* recv any msg except of specified type */
  29 # define MSG_COPY       040000  /* copy (not remove) all queue messages */
  30 #endif
  31
  32 /* Types used in the structure definition.  */
  33 typedef unsigned long int msgqnum_t;
  34 typedef unsigned long int msglen_t;
  35
  36
  37 /* Structure of record for one message inside the kernel.
  38    The type `struct msg' is opaque.  */
  39 struct msqid_ds
  40 {
  41   struct ipc_perm msg_perm;     /* structure describing operation permission */
  42   __time_t msg_stime;           /* time of last msgsnd command */
  43   __time_t msg_rtime;           /* time of last msgrcv command */
  44   __time_t msg_ctime;           /* time of last change */
  45   unsigned long int __msg_cbytes;       /* current number of bytes on queue */
  46   msgqnum_t msg_qnum;           /* number of messages currently on queue */
  47   msglen_t msg_qbytes;          /* max number of bytes allowed on queue */
  48   __pid_t msg_lspid;            /* pid of last msgsnd() */
  49   __pid_t msg_lrpid;            /* pid of last msgrcv() */
  50   unsigned long int __glibc_reserved1;
  51   unsigned long int __glibc_reserved2;
  52 };
  53
  54 #ifdef __USE_MISC
  55
  56 # define msg_cbytes     __msg_cbytes
  57
  58 /* ipcs ctl commands */
  59 # define MSG_STAT 11
  60 # define MSG_INFO 12
  61
  62 /* buffer for msgctl calls IPC_INFO, MSG_INFO */
  63 struct msginfo
  64   {
  65     int msgpool;
  66     int msgmap;
  67     int msgmax;
  68     int msgmnb;
  69     int msgmni;
  70     int msgssz;
  71     int msgtql;
  72     unsigned short int msgseg;
  73   };
  74
  75 #endif /* __USE_MISC */