diff options
Diffstat (limited to 'include/linux/msg.h')
| -rw-r--r-- | include/linux/msg.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/include/linux/msg.h b/include/linux/msg.h new file mode 100644 index 000000000..f3f302f9c --- /dev/null +++ b/include/linux/msg.h @@ -0,0 +1,42 @@ +#ifndef _LINUX_MSG_H +#define _LINUX_MSG_H + +#include <linux/list.h> +#include <uapi/linux/msg.h> + +/* one msg_msg structure for each message */ +struct msg_msg { + struct list_head m_list; + long m_type; + size_t m_ts; /* message text size */ + struct msg_msgseg *next; + void *security; + /* the actual message follows immediately */ +}; + +/* one msq_queue structure for each present queue on the system */ +struct msg_queue { + struct kern_ipc_perm q_perm; + time_t q_stime; /* last msgsnd time */ + time_t q_rtime; /* last msgrcv time */ + time_t q_ctime; /* last change time */ + unsigned long q_cbytes; /* current number of bytes on queue */ + unsigned long q_qnum; /* number of messages in queue */ + unsigned long q_qbytes; /* max number of bytes on queue */ + pid_t q_lspid; /* pid of last msgsnd */ + pid_t q_lrpid; /* last receive pid */ + + struct list_head q_messages; + struct list_head q_receivers; + struct list_head q_senders; +}; + +/* Helper routines for sys_msgsnd and sys_msgrcv */ +extern long do_msgsnd(int msqid, long mtype, void __user *mtext, + size_t msgsz, int msgflg); +extern long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, + int msgflg, + long (*msg_fill)(void __user *, struct msg_msg *, + size_t)); + +#endif /* _LINUX_MSG_H */ |