[Go to CFHT Home Page] Man Pages
Back to Software Index  BORDER=0Manpage Top Level
    dupmsg(9F) manual page Table of Contents

Name

dupmsg - duplicate a message

Synopsis


#include <sys/stream.h>

mblk_t *dupmsg(mblk_t *mp);

Interface Level

Architecture independent level 1 (DDI/DKI).

Arguments

mp
Pointer to the message.

Description

dupmsg() forms a new message by copying the message block descriptors pointed to by mp and linking them. dupb(9F) is called for each message block. The data blocks themselves are not duplicated.

Return Values

If successful, dupmsg() returns a pointer to the new message block. Otherwise, it returns a NULL pointer. A return value of NULL indicates either memory depletion or the data block reference count, db_ref (see datab(9S) ), has reached a limit (255). See dupb(9F) .

Context

dupmsg() can be called from user, kernel, or interrupt context.

Examples

See copyb(9F) for an example using dupmsg().

See Also

copyb(9F) , copymsg(9F) , dupb(9F) , datab(9S)


Table of Contents