What are the meaning of these macros.. Post: 302266324

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scsi_find_sense_descr

scsi_find_sense_descr(9F)				   Kernel Functions for Drivers 				 scsi_find_sense_descr(9F)

NAME

       scsi_find_sense_descr - find descriptor in SCSI sense data

SYNOPSIS

       #include <sys/scsi/scsi.h>

       uint8_t *scsi_find_sense_descr(uint8_t *sense_buffer, int sense_buf_len,
	    int req_descr_type);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       sense_buffer	 Pointer  to  a buffer containing SCSI descriptor sense data. The data is expected in wire format starting at the response
			 code.

       sense_buf_len	 Integer that contains the length of sense buffer in bytes.

       req_descr_type	 Integer that contains the descriptor type value for the desired sense descriptor.

DESCRIPTION

       The scsi_find_sense_descr() function is used to obtain a pointer to a specific descriptor  type,  specified  by	req_descr_type,  within  a
       descriptor  sense buffer. Before returning the pointer, scsi_find_sense_descr() verifies that the entire descriptor is present based on the
       length provided in sense_buf_len.

       Any value for req_descr_type can be requested. The following descriptor types are already defined:

	 #define DESCR_INFORMATION	   0x00
	 #define DESCR_COMMAND_SPECIFIC    0x01
	 #define DESCR_SENSE_KEY_SPECIFIC  0x02
	 #define DESCR_FRU		   0x03
	 #define DESCR_STREAM_COMMANDS	   0x04
	 #define DESCR_BLOCK_COMMANDS	   0x05
	 #define DESCR_OSD_OID		   0x06
	 #define DESCR_OSD_RESP_INTEGRITY  0x07
	 #define DESCR_OSD_ATTR_ID	   0x08

       Drivers should use scsi_validate_sense(9F) to ensure that the sense buffer contains valid descriptor sense data.

RETURN VALUES

       The scsi_find_sense_descr() function returns a pointer to a sense descriptor of the requested type if a descriptor of that type exists.	If
       no such descriptor exists, scsi_find_sense_descr() returns NULL.

CONTEXT

       The scsi_find_sense_descr() function can be called from user or interrupt context.

SEE ALSO

       scsi_ext_sense_fields(9F),    scsi_sense_asc(9F),   scsi_sense_ascq(9F),   scsi_sense_cmdspecific_uint64(9F),   scsi_sense_info_uint64(9F),
       scsi_sense_key(9F), scsi_validate_sense(9F)

SunOS 5.11							    30 Jun 2006 					 scsi_find_sense_descr(9F)