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Copyright 1989 AT&T
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copyreq - STREAMS data structure for the M_COPYIN and the M_COPYOUT message types

#include <sys/stream.h>

Architecture independent level 1 (DDI/DKI)

The data structure for the M_COPYIN and the M_COPYOUT message types.

int cq_cmd; /* ioctl command (from ioc_cmd) */
cred_t *cq_cr; /* full credentials */
uint_t cq_id; /* ioctl id (from ioc_id) */
uint_t cq_flag; /* must be zero */
mblk_t *cq_private; /* private state information */
caddr_t cq_addr; /* address to copy data to/from */
size_t cq_size; /* number of bytes to copy */ 

STREAMS Programming Guide