copyb(9r) osf1 man page | unix.com

copyb(9r)																 copyb(9r)

NAME
       copyb - STREAMS: Copies a message block

SYNOPSIS
       #include <sys/stream.h>

       MBLKP copyb(
	       MBLKP message_block );

ARGUMENTS
       Specifies  a  pointer to the message block from which copyb copies the data. The typedef MBLKP is an alternate name for typedef struct msgb
       *.

DESCRIPTION
       The copyb interface allocates a new message block and copies into it the data from the block pointed to by  the	message  block	(the  mes-
       sage_block argument). The new message block is at least as large as the message block being copied. The copyb interface uses the b_rptr and
       b_wptr members of the msgb structure pointer to determine how many bytes to copy.

RETURN VALUES
       Upon successful completion, the copyb interface returns a pointer to the newly allocated message block that contains the copied data.  This
       newly allocated message block is of type struct msgb *.	The msgb data structure is defined in the /usr/sys/include/sys/stream.h file.

       Otherwise, copyb returns a NULL pointer.

SEE ALSO
       Kernel Interfaces: allocb(9r)

       Programmer's Guide: STREAMS

																	 copyb(9r)