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b168057a | 1 | /* Copyright (C) 1995-2015 Free Software Foundation, Inc. |
8a4b65b4 | 2 | This file is part of the GNU C Library. |
d2f5be2a | 3 | |
8a4b65b4 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
d2f5be2a | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
d2f5be2a | 17 | |
f4017d20 | 18 | #ifndef _SYS_MSG_H |
9756dfe1 | 19 | # error "Never use <bits/msq.h> directly; include <sys/msg.h> instead." |
f4017d20 | 20 | #endif |
8a4b65b4 | 21 | |
bba09d23 | 22 | #include <bits/types.h> |
3efdabe7 | 23 | #include <bits/ipctypes.h> |
d2f5be2a UD |
24 | |
25 | /* Define options for message queue functions. */ | |
26 | #define MSG_NOERROR 010000 /* no error if message is too big */ | |
bba09d23 UD |
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 short int msgqnum_t; | |
33 | typedef unsigned short int msglen_t; | |
d2f5be2a UD |
34 | |
35 | ||
d2f5be2a | 36 | /* Structure of record for one message inside the kernel. |
9756dfe1 | 37 | The type `struct msg' is opaque. */ |
d2f5be2a UD |
38 | struct msqid_ds |
39 | { | |
40 | struct ipc_perm msg_perm; /* structure describing operation permission */ | |
70d9946a JM |
41 | struct msg *__msg_first; /* pointer to first message on queue */ |
42 | struct msg *__msg_last; /* pointer to last message on queue */ | |
d2f5be2a UD |
43 | __time_t msg_stime; /* time of last msgsnd command */ |
44 | __time_t msg_rtime; /* time of last msgrcv command */ | |
45 | __time_t msg_ctime; /* time of last change */ | |
70d9946a JM |
46 | struct wait_queue *__wwait; /* ??? */ |
47 | struct wait_queue *__rwait; /* ??? */ | |
d2f5be2a | 48 | unsigned short int __msg_cbytes;/* current number of bytes on queue */ |
bba09d23 UD |
49 | msgqnum_t msg_qnum; /* number of messages currently on queue */ |
50 | msglen_t msg_qbytes; /* max number of bytes allowed on queue */ | |
9756dfe1 UD |
51 | __ipc_pid_t msg_lspid; /* pid of last msgsnd() */ |
52 | __ipc_pid_t msg_lrpid; /* pid of last msgrcv() */ | |
d2f5be2a UD |
53 | }; |
54 | ||
84724245 RM |
55 | #ifdef __USE_MISC |
56 | ||
9756dfe1 | 57 | # define msg_cbytes __msg_cbytes |
84724245 RM |
58 | |
59 | /* ipcs ctl commands */ | |
9756dfe1 UD |
60 | # define MSG_STAT 11 |
61 | # define MSG_INFO 12 | |
84724245 RM |
62 | |
63 | /* buffer for msgctl calls IPC_INFO, MSG_INFO */ | |
8a4b65b4 | 64 | struct msginfo |
f4017d20 UD |
65 | { |
66 | int msgpool; | |
67 | int msgmap; | |
68 | int msgmax; | |
69 | int msgmnb; | |
70 | int msgmni; | |
71 | int msgssz; | |
72 | int msgtql; | |
9756dfe1 | 73 | unsigned short int msgseg; |
f4017d20 | 74 | }; |
84724245 RM |
75 | |
76 | #endif /* __USE_MISC */ |