Index for Section 9r

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copyb(9r)
NAME
  copyb - STREAMS: Copies a message block

SYNOPSIS
  #include <sys/stream.h>

  MBLKP copyb(
	  MBLKP message_block );

ARGUMENTS
  message_block
      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 message_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

Index for Section 9r

Alphabetical listing for C

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