libc/sysdeps/linux/powerpc/bits/msq.h

   1 /* Copyright (C) 1995, 1996, 1997, 2000, 2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _SYS_MSG_H
  19 # error "Never use <bits/msq.h> directly; include <sys/msg.h> instead."
  20 #endif
  21
  22 #include <bits/types.h>
  23
  24 /* Define options for message queue functions.  */
  25 #define MSG_NOERROR    010000  /* no error if message is too big */
  26 #ifdef __USE_GNU
  27 # define MSG_EXCEPT    020000  /* recv any msg except of specified type */
  28 #endif
  29
  30 /* Types used in the structure definition.  */
  31 typedef unsigned long int msgqnum_t;
  32 typedef unsigned long int msglen_t;
  33
  34
  35 /* Structure of record for one message inside the kernel.
  36    The type `struct msg' is opaque.  */
  37 struct msqid_ds
  38 {
  39   struct ipc_perm msg_perm;    /* structure describing operation permission */
  40 #if __WORDSIZE == 32
  41   unsigned int __uclibc_unused1;
  42 #endif
  43   __time_t msg_stime;          /* time of last msgsnd command */
  44 #if __WORDSIZE == 32
  45   unsigned int __uclibc_unused2;
  46 #endif
  47   __time_t msg_rtime;          /* time of last msgrcv command */
  48 #if __WORDSIZE == 32
  49   unsigned int __uclibc_unused3;
  50 #endif
  51   __time_t msg_ctime;          /* time of last change */
  52   unsigned long __msg_cbytes; /* current number of bytes on queue */
  53   msgqnum_t msg_qnum;          /* number of messages currently on queue */
  54   msglen_t msg_qbytes;         /* max number of bytes allowed on queue */
  55   __pid_t msg_lspid;           /* pid of last msgsnd() */
  56   __pid_t msg_lrpid;           /* pid of last msgrcv() */
  57   unsigned long __uclibc_unused4;
  58   unsigned long __uclibc_unused5;
  59 };
  60
  61 #ifdef __USE_MISC
  62
  63 # define msg_cbytes    __msg_cbytes
  64
  65 /* ipcs ctl commands */
  66 # define MSG_STAT 11
  67 # define MSG_INFO 12
  68
  69 /* buffer for msgctl calls IPC_INFO, MSG_INFO */
  70 struct msginfo
  71   {
  72     int msgpool;
  73     int msgmap;
  74     int msgmax;
  75     int msgmnb;
  76     int msgmni;
  77     int msgssz;
  78     int msgtql;
  79     unsigned short int msgseg;
  80   };
  81
  82 #endif /* __USE_MISC */