adjmsg(9F)

NAME

adjmsg − trim bytes from a message

SYNOPSIS

#include <sys/stream.h>
int adjmsg(mblk_t ∗mp, int len);

ARGUMENTS

mp Pointer to the message to be trimmed.

len The number of bytes to be removed.

INTERFACE LEVEL

Architecture independent level 1 (DDI/DKI).

DESCRIPTION

adjmsg() removes bytes from a message. |len| (the absolute value of len) specifies the number of bytes to be removed. If len is greater than 0, adjmsg() removes bytes from the head of the message. If len is less than 0, it removes bytes from the tail. adjmsg() fails if |len| is greater than the number of bytes in the message.

RETURN VALUES

adjmsg() returns:

1 on success.

0 on failure.

CONTEXT

adjmsg() can be called from user or interrupt context.

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