/* Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #ifndef _SYS_MSG_H # error "Never use <bits/msq.h> directly; include <sys/msg.h> instead." #endif #include <bits/types.h> /* Define options for message queue functions. */ #define MSG_NOERROR 010000 /* no error if message is too big */ #ifdef __USE_GNU # define MSG_EXCEPT 020000 /* recv any msg except of specified type */ #endif /* Types used in the structure definition. */ typedef unsigned long int msgqnum_t; typedef unsigned long int msglen_t; /* Structure of record for one message inside the kernel. The type `struct msg' is opaque. */ struct msqid_ds { struct ipc_perm msg_perm; struct msg *msg_first; /* first message on queue,unused */ struct msg *msg_last; /* last message in queue,unused */ __kernel_time_t msg_stime; /* last msgsnd time */ __kernel_time_t msg_rtime; /* last msgrcv time */ __kernel_time_t msg_ctime; /* last change time */ unsigned long msg_lcbytes; /* Reuse junk fields for 32 bit */ unsigned long msg_lqbytes; /* ditto */ unsigned short __msg_cbytes; /* current number of bytes on queue */ unsigned short msg_qnum; /* number of messages in queue */ unsigned short msg_qbytes; /* max number of bytes on queue */ __kernel_ipc_pid_t msg_lspid; /* pid of last msgsnd */ __kernel_ipc_pid_t msg_lrpid; /* last receive pid */ }; #ifdef __USE_MISC # define msg_cbytes __msg_cbytes /* ipcs ctl commands */ # define MSG_STAT 11 # define MSG_INFO 12 /* buffer for msgctl calls IPC_INFO, MSG_INFO */ struct msginfo { int msgpool; int msgmap; int msgmax; int msgmnb; int msgmni; int msgssz; int msgtql; unsigned short int msgseg; }; #endif /* __USE_MISC */