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man pages section 9: DDI and DKI Properties and Data Structures |
- STREAMS data structure for the M_IOCTL message type
#include <sys/stream.h>
Architecture independent level 1 (DDI/DKI).
The iocblk data structure is used for passing M_IOCTL messages.
int ioc_cmd; /* ioctl command type */ cred_t *ioc_cr; /* full credentials */ uint_t ioc_id; /* ioctl id */ uint_t ioc_flag; /* ioctl flags */ uint_t ioc_count; /* count of bytes in data field */ int ioc_rval; /* return value */ int ioc_error; /* error code */