1c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifndef _LINUX_MSG_H 2c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define _LINUX_MSG_H 3c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 4c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/ipc.h> 5c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 6c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* ipcs ctl commands */ 7c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSG_STAT 11 8c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSG_INFO 12 9c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 10c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* msgrcv options */ 11c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSG_NOERROR 010000 /* no error if message is too big */ 12c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSG_EXCEPT 020000 /* recv any msg except of specified type.*/ 13c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 14c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Obsolete, used only for backwards compatibility and libc5 compiles */ 15c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct msqid_ds { 16c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct ipc_perm msg_perm; 17c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct msg *msg_first; /* first message on queue,unused */ 18c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct msg *msg_last; /* last message in queue,unused */ 19c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __kernel_time_t msg_stime; /* last msgsnd time */ 20c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __kernel_time_t msg_rtime; /* last msgrcv time */ 21c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __kernel_time_t msg_ctime; /* last change time */ 22c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long msg_lcbytes; /* Reuse junk fields for 32 bit */ 23c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long msg_lqbytes; /* ditto */ 24c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned short msg_cbytes; /* current number of bytes on queue */ 25c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned short msg_qnum; /* number of messages in queue */ 26c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned short msg_qbytes; /* max number of bytes on queue */ 27c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __kernel_ipc_pid_t msg_lspid; /* pid of last msgsnd */ 28c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __kernel_ipc_pid_t msg_lrpid; /* last receive pid */ 29c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 30c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 31c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Include the definition of msqid64_ds */ 32c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/msgbuf.h> 33c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 34c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* message buffer for msgsnd and msgrcv calls */ 35c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct msgbuf { 36c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru long mtype; /* type of message */ 37c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru char mtext[1]; /* message text */ 38c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 39c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 40c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* buffer for msgctl calls IPC_INFO, MSG_INFO */ 41c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct msginfo { 42c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int msgpool; 43c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int msgmap; 44c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int msgmax; 45c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int msgmnb; 46c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int msgmni; 47c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int msgssz; 48c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int msgtql; 49c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned short msgseg; 50c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 51c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 52c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSGMNI 16 /* <= IPCMNI */ /* max # of msg queue identifiers */ 53c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSGMAX 8192 /* <= INT_MAX */ /* max size of message (bytes) */ 54c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSGMNB 16384 /* <= INT_MAX */ /* default max size of a message queue */ 55c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 56c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* unused */ 57c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSGPOOL (MSGMNI*MSGMNB/1024) /* size in kilobytes of message pool */ 58c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSGTQL MSGMNB /* number of system message headers */ 59c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSGMAP MSGMNB /* number of entries in message map */ 60c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSGSSZ 16 /* message segment size */ 61c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __MSGSEG ((MSGPOOL*1024)/ MSGSSZ) /* max no. of segments */ 62c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MSGSEG (__MSGSEG <= 0xffff ? __MSGSEG : 0xffff) 63c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 64c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef __KERNEL__ 65c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/list.h> 66c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 67c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* one msg_msg structure for each message */ 68c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct msg_msg { 69c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head m_list; 70c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru long m_type; 71c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int m_ts; /* message text size */ 72c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct msg_msgseg* next; 73c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void *security; 74c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru /* the actual message follows immediately */ 75c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 76c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 77c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* one msq_queue structure for each present queue on the system */ 78c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct msg_queue { 79c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct kern_ipc_perm q_perm; 80c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int q_id; 81c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru time_t q_stime; /* last msgsnd time */ 82c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru time_t q_rtime; /* last msgrcv time */ 83c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru time_t q_ctime; /* last change time */ 84c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long q_cbytes; /* current number of bytes on queue */ 85c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long q_qnum; /* number of messages in queue */ 86c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long q_qbytes; /* max number of bytes on queue */ 87c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pid_t q_lspid; /* pid of last msgsnd */ 88c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru pid_t q_lrpid; /* last receive pid */ 89c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 90c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head q_messages; 91c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head q_receivers; 92c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head q_senders; 93c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 94c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 95c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* __KERNEL__ */ 96c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 97c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* _LINUX_MSG_H */ 98