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fd26970f | 1 | /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. |
8a4b65b4 | 2 | This file is part of the GNU C Library. |
d2f5be2a | 3 | |
8a4b65b4 UD |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
d2f5be2a | 8 | |
8a4b65b4 UD |
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 | Library General Public License for more details. | |
d2f5be2a | 13 | |
8a4b65b4 UD |
14 | You should have received a copy of the GNU Library General Public |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
d2f5be2a | 18 | |
f4017d20 | 19 | #ifndef _SYS_MSG_H |
9756dfe1 | 20 | # error "Never use <bits/msq.h> directly; include <sys/msg.h> instead." |
f4017d20 | 21 | #endif |
8a4b65b4 | 22 | |
d2f5be2a UD |
23 | #include <sys/types.h> |
24 | ||
25 | /* Define options for message queue functions. */ | |
26 | #define MSG_NOERROR 010000 /* no error if message is too big */ | |
27 | #define MSG_EXCEPT 020000 /* recv any msg except of specified type */ | |
28 | ||
29 | ||
d2f5be2a | 30 | /* Structure of record for one message inside the kernel. |
9756dfe1 | 31 | The type `struct msg' is opaque. */ |
d2f5be2a UD |
32 | struct msqid_ds |
33 | { | |
34 | struct ipc_perm msg_perm; /* structure describing operation permission */ | |
35 | struct msg *__msg_first; /* pointer to first message on queue */ | |
36 | struct msg *__msg_last; /* pointer to last message on queue */ | |
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 | struct wait_queue *__wwait; /* ??? */ | |
41 | struct wait_queue *__rwait; /* ??? */ | |
42 | unsigned short int __msg_cbytes;/* current number of bytes on queue */ | |
43 | unsigned short int msg_qnum; /* number of messages currently on queue */ | |
44 | unsigned short int msg_qbytes;/* max number of bytes allowed on queue */ | |
9756dfe1 UD |
45 | __ipc_pid_t msg_lspid; /* pid of last msgsnd() */ |
46 | __ipc_pid_t msg_lrpid; /* pid of last msgrcv() */ | |
d2f5be2a UD |
47 | }; |
48 | ||
84724245 RM |
49 | #ifdef __USE_MISC |
50 | ||
9756dfe1 | 51 | # define msg_cbytes __msg_cbytes |
84724245 RM |
52 | |
53 | /* ipcs ctl commands */ | |
9756dfe1 UD |
54 | # define MSG_STAT 11 |
55 | # define MSG_INFO 12 | |
84724245 RM |
56 | |
57 | /* buffer for msgctl calls IPC_INFO, MSG_INFO */ | |
8a4b65b4 | 58 | struct msginfo |
f4017d20 UD |
59 | { |
60 | int msgpool; | |
61 | int msgmap; | |
62 | int msgmax; | |
63 | int msgmnb; | |
64 | int msgmni; | |
65 | int msgssz; | |
66 | int msgtql; | |
9756dfe1 | 67 | unsigned short int msgseg; |
f4017d20 | 68 | }; |
84724245 RM |
69 | |
70 | #endif /* __USE_MISC */ |