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1 | /* Copyright (C) 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, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
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 | #endif | |
30 | ||
31 | /* Types used in the structure definition. */ | |
32 | typedef unsigned long int msgqnum_t; | |
33 | typedef unsigned long int msglen_t; | |
34 | ||
35 | ||
36 | /* Structure of record for one message inside the kernel. | |
37 | The type `struct msg' is opaque. */ | |
38 | struct msqid_ds | |
39 | { | |
40 | struct ipc_perm msg_perm; /* structure describing operation permission */ | |
41 | __time_t msg_stime; /* time of last msgsnd command */ | |
42 | __time_t msg_rtime; /* time of last msgrcv command */ | |
43 | __time_t msg_ctime; /* time of last change */ | |
44 | unsigned long int __msg_cbytes; /* current number of bytes on queue */ | |
45 | msgqnum_t msg_qnum; /* number of messages currently on queue */ | |
46 | msglen_t msg_qbytes; /* max number of bytes allowed on queue */ | |
47 | __pid_t msg_lspid; /* pid of last msgsnd() */ | |
48 | __pid_t msg_lrpid; /* pid of last msgrcv() */ | |
49 | unsigned long int __unused1; | |
50 | unsigned long int __unused2; | |
51 | }; | |
52 | ||
53 | #ifdef __USE_MISC | |
54 | ||
55 | # define msg_cbytes __msg_cbytes | |
56 | ||
57 | /* ipcs ctl commands */ | |
58 | # define MSG_STAT 11 | |
59 | # define MSG_INFO 12 | |
60 | ||
61 | /* buffer for msgctl calls IPC_INFO, MSG_INFO */ | |
62 | struct msginfo | |
63 | { | |
64 | int msgpool; | |
65 | int msgmap; | |
66 | int msgmax; | |
67 | int msgmnb; | |
68 | int msgmni; | |
69 | int msgssz; | |
70 | int msgtql; | |
71 | unsigned short int msgseg; | |
72 | }; | |
73 | ||
74 | #endif /* __USE_MISC */ |