MERROR(9F)MERROR(9F)NAMEmerror - Send an M_ERROR message upstream
void merror(queue_t *wq, mblk_t *mp, int error);
Solaris DDI specific (Solaris DDI).
Write queue associated with the read queue to send the M_ERROR
Optionally, a STREAMS message to convert to an M_ERROR.
Error code to include in the M_ERROR message.
The merror() function constructs an M_ERROR message, and sends the
resulting message upstream.
If mp is NULL, merror() allocates a one-byte M_ERROR message. If mp is
non-NULL, merror() attempts to convert the passed-in message to an
M_ERROR. However, if the passed-in message has more than one reference
(see dupmsg(9F)), or if it is of zero length, it is freed and a new
message is allocated.
If the allocation or conversion fails, merror() silently fails. Other‐
wise, the resulting one-byte data block is assigned the specified error
code and sent upstream.
This function can be called from user, kernel or interrupt context.
Callers must not hold any locks across an merror() that can be acquired
as part of put(9E) processing.
SEE ALSOput(9E), dupmsg(9F)
STREAMS Programming Guide
Jun 9, 2004 MERROR(9F)