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Define the Volume Tag format.

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This commit is contained in:
thorpej 1999-07-22 17:43:53 +00:00
parent 017c26041b
commit 40d9e23179
1 changed files with 15 additions and 3 deletions
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18
sys/dev/scsipi/scsi_changer.h
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@ -1,7 +1,7 @@
/* $NetBSD: scsi_changer.h,v 1.12 1998/12/17 22:27:18 gibbs Exp $ */
/* $NetBSD: scsi_changer.h,v 1.13 1999/07/22 17:43:53 thorpej Exp $ */
/*
* Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
* Copyright (c) 1996, 1999 Jason R. Thorpe <thorpej@and.com>
* All rights reserved.
*
* Partially based on an autochanger driver written by Stefan Grefen
@ -235,7 +235,19 @@ struct read_element_status_descriptor {
*/
};
/* XXX add data returned by REQUEST VOLUME ELEMENT ADDRESS */
/*
* Volume Tag format:
*
* Volume Tags are a sequence of ASCII characters, unused portion is
* blank-filled. There should be no blanks in the significant portion
* of the tag. For maximum compatibility, volume tag characters should
* be limited to '0'..'9', 'A'..'Z', '_'.
*/
struct changer_volume_tag {
u_int8_t volid[32]; /* 32 bytes of ASCII, blank-terminated */
u_int8_t reserved[2];
u_int8_t volseq[2]; /* volume sequence number */
};
/* Element type codes */
#define ELEMENT_TYPE_MASK 0x0f /* Note: these aren't bits */