diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/msg.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/linux/msg.h')
-rw-r--r-- | include/linux/msg.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/include/linux/msg.h b/include/linux/msg.h new file mode 100644 index 000000000000..2c4c6aa643ff --- /dev/null +++ b/include/linux/msg.h | |||
@@ -0,0 +1,96 @@ | |||
1 | #ifndef _LINUX_MSG_H | ||
2 | #define _LINUX_MSG_H | ||
3 | |||
4 | #include <linux/ipc.h> | ||
5 | #include <linux/list.h> | ||
6 | |||
7 | /* ipcs ctl commands */ | ||
8 | #define MSG_STAT 11 | ||
9 | #define MSG_INFO 12 | ||
10 | |||
11 | /* msgrcv options */ | ||
12 | #define MSG_NOERROR 010000 /* no error if message is too big */ | ||
13 | #define MSG_EXCEPT 020000 /* recv any msg except of specified type.*/ | ||
14 | |||
15 | /* Obsolete, used only for backwards compatibility and libc5 compiles */ | ||
16 | struct msqid_ds { | ||
17 | struct ipc_perm msg_perm; | ||
18 | struct msg *msg_first; /* first message on queue,unused */ | ||
19 | struct msg *msg_last; /* last message in queue,unused */ | ||
20 | __kernel_time_t msg_stime; /* last msgsnd time */ | ||
21 | __kernel_time_t msg_rtime; /* last msgrcv time */ | ||
22 | __kernel_time_t msg_ctime; /* last change time */ | ||
23 | unsigned long msg_lcbytes; /* Reuse junk fields for 32 bit */ | ||
24 | unsigned long msg_lqbytes; /* ditto */ | ||
25 | unsigned short msg_cbytes; /* current number of bytes on queue */ | ||
26 | unsigned short msg_qnum; /* number of messages in queue */ | ||
27 | unsigned short msg_qbytes; /* max number of bytes on queue */ | ||
28 | __kernel_ipc_pid_t msg_lspid; /* pid of last msgsnd */ | ||
29 | __kernel_ipc_pid_t msg_lrpid; /* last receive pid */ | ||
30 | }; | ||
31 | |||
32 | /* Include the definition of msqid64_ds */ | ||
33 | #include <asm/msgbuf.h> | ||
34 | |||
35 | /* message buffer for msgsnd and msgrcv calls */ | ||
36 | struct msgbuf { | ||
37 | long mtype; /* type of message */ | ||
38 | char mtext[1]; /* message text */ | ||
39 | }; | ||
40 | |||
41 | /* buffer for msgctl calls IPC_INFO, MSG_INFO */ | ||
42 | struct msginfo { | ||
43 | int msgpool; | ||
44 | int msgmap; | ||
45 | int msgmax; | ||
46 | int msgmnb; | ||
47 | int msgmni; | ||
48 | int msgssz; | ||
49 | int msgtql; | ||
50 | unsigned short msgseg; | ||
51 | }; | ||
52 | |||
53 | #define MSGMNI 16 /* <= IPCMNI */ /* max # of msg queue identifiers */ | ||
54 | #define MSGMAX 8192 /* <= INT_MAX */ /* max size of message (bytes) */ | ||
55 | #define MSGMNB 16384 /* <= INT_MAX */ /* default max size of a message queue */ | ||
56 | |||
57 | /* unused */ | ||
58 | #define MSGPOOL (MSGMNI*MSGMNB/1024) /* size in kilobytes of message pool */ | ||
59 | #define MSGTQL MSGMNB /* number of system message headers */ | ||
60 | #define MSGMAP MSGMNB /* number of entries in message map */ | ||
61 | #define MSGSSZ 16 /* message segment size */ | ||
62 | #define __MSGSEG ((MSGPOOL*1024)/ MSGSSZ) /* max no. of segments */ | ||
63 | #define MSGSEG (__MSGSEG <= 0xffff ? __MSGSEG : 0xffff) | ||
64 | |||
65 | #ifdef __KERNEL__ | ||
66 | |||
67 | /* one msg_msg structure for each message */ | ||
68 | struct msg_msg { | ||
69 | struct list_head m_list; | ||
70 | long m_type; | ||
71 | int m_ts; /* message text size */ | ||
72 | struct msg_msgseg* next; | ||
73 | void *security; | ||
74 | /* the actual message follows immediately */ | ||
75 | }; | ||
76 | |||
77 | /* one msq_queue structure for each present queue on the system */ | ||
78 | struct msg_queue { | ||
79 | struct kern_ipc_perm q_perm; | ||
80 | time_t q_stime; /* last msgsnd time */ | ||
81 | time_t q_rtime; /* last msgrcv time */ | ||
82 | time_t q_ctime; /* last change time */ | ||
83 | unsigned long q_cbytes; /* current number of bytes on queue */ | ||
84 | unsigned long q_qnum; /* number of messages in queue */ | ||
85 | unsigned long q_qbytes; /* max number of bytes on queue */ | ||
86 | pid_t q_lspid; /* pid of last msgsnd */ | ||
87 | pid_t q_lrpid; /* last receive pid */ | ||
88 | |||
89 | struct list_head q_messages; | ||
90 | struct list_head q_receivers; | ||
91 | struct list_head q_senders; | ||
92 | }; | ||
93 | |||
94 | #endif /* __KERNEL__ */ | ||
95 | |||
96 | #endif /* _LINUX_MSG_H */ | ||