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| 1 | /* Copyright (C) 1995-2022 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 | <https://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 | |
| 27 | /* Types used in the structure definition. */ |
| 28 | typedef unsigned short int msgqnum_t; |
| 29 | typedef unsigned short int msglen_t; |
| 30 | |
| 31 | |
| 32 | /* Structure of record for one message inside the kernel. |
| 33 | The type `struct __msg' is opaque. */ |
| 34 | struct msqid_ds |
| 35 | { |
| 36 | struct ipc_perm msg_perm; /* structure describing operation permission */ |
| 37 | __time_t msg_stime; /* time of last msgsnd command */ |
| 38 | __time_t msg_rtime; /* time of last msgrcv command */ |
| 39 | __time_t msg_ctime; /* time of last change */ |
| 40 | msgqnum_t msg_qnum; /* number of messages currently on queue */ |
| 41 | msglen_t 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 | }; |
| 45 |
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