remove file extension Post: 302127749

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msg

msg.h(3HEAD)							      Headers							      msg.h(3HEAD)

NAME

       msg.h, msg - message queue structures

SYNOPSIS

       #include <sys/msg.h>

DESCRIPTION

       The <sys/msg.h> header defines the following data types through typedef:

       msgqnum_t       used for the number of messages in the message queue

       msglen_t        used for the number of bytes allowed in the message queue

       These types are unsigned integer types that are able to store values at least as large as a type unsigned short.

       The <sys/msg.h> header defines the following constant as a message operation flag:

       MSG_NOERROR     no error if big message

       The msqid_ds structure contains the following members:

       struct ipc_perm	  msg_perm	Operation permission structure.
       msgqnum_t	  msg_qnum	Number of messages currently on queue.
       msglen_t 	  msg_qbytes	Maximum number of bytes allowed on queue.
       pid_t		  msg_lspid	Process ID of last msgsnd(2).
       pid_t		  msg_lrpid	Process ID of last msgrcv(2).
       time_t		  msg_stime	Time of last msgsnd().
       time_t		  msg_rtime	Time of last msgrcv().
       time_t		  msg_ctime	Time of last change.

       The pid_t, time_t, key_t, size_t, and ssize_t types are defined as described in <sys/types.h>. See types(3HEAD).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       msgctl(2), msgget(2), msgrcv(2), msgsnd(2), ipc.h(3HEAD), types.h(3HEAD), attributes(5), standards(5)

SunOS 5.10							    10 Sep 2004 						      msg.h(3HEAD)