[PATCH v2 07/14] sg_io: whitelist a few more commands for media changers

From: Paolo Bonzini
Date: Wed Feb 06 2013 - 10:18:48 EST


Besides CD-ROMs, three more device types are interesting for SG_IO:
media changers, tapes and of course disks.

Starting with this patch, we will whitelist a few more commands for
these devices. For media changers, enable "INITIALIZE ELEMENT STATUS"
and "REQUEST VOLUME ELEMENT ADDRESS". A few changer-specific commands
were already enabled by chance because they overlapped commands that
are valid for other classes: "EXCHANGE MEDIUM" and "SEND VOLUME TAG",
"INITIALIZE ELEMENT STATUS WITH RANGE".

Cc: "James E.J. Bottomley" <JBottomley@xxxxxxxxxxxxx>
Cc: linux-scsi@xxxxxxxxxxxxxxx
Cc: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
block/scsi_ioctl.c | 21 ++++++++++++++++-----
1 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index fa2a1fc..8cda426 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -142,9 +142,9 @@ static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter)
sgio_bitmap_set(0x03, D|T|L|P|W|R|O|M|A|E|B|K|V|F|C|S, read); /* REQUEST SENSE */
sgio_bitmap_set(0x12, D|T|L|P|W|R|O|M|A|E|B|K|V|F|C|S, read); /* INQUIRY */
sgio_bitmap_set(0x1A, D|T|L|P|W|R|O|M|A|E|B|K|V|F|C|S, read); /* MODE SENSE(6) */
- sgio_bitmap_set(0x1B, D|T| W|R|O|M|A| B|K|V|F , read); /* START STOP UNIT */
+ sgio_bitmap_set(0x1B, D|T| W|R|O| A| B|K|V|F , read); /* START STOP UNIT */
sgio_bitmap_set(0x1C, D|T|B|O|W|R|O|M|A|E| K|V|F|C|S, read); /* RECEIVE DIAGNOSTIC RESULTS */
- sgio_bitmap_set(0x2B, D|T| W|R|O|M| K , read); /* SEEK(10) */
+ sgio_bitmap_set(0x2B, D|T| W|R|O| K , read); /* SEEK(10) */
sgio_bitmap_set(0x3C, D|T|B|O|W|R|O|M|A|E| K|V|F|C|S, read); /* READ BUFFER */
sgio_bitmap_set(0x4D, D|T|L|P|W|R|O|M|A|E|B|K|V|F|C|S, read); /* LOG SENSE */
sgio_bitmap_set(0x5A, D|T|L|P|W|R|O|M|A|E|B|K|V|F|C|S, read); /* MODE SENSE(10) */
@@ -168,7 +168,7 @@ static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter)
sgio_bitmap_set(0x25, D| W|R|O| B|K , read); /* READ CAPACITY(10) */
sgio_bitmap_set(0x28, D| W|R|O| B|K , read); /* READ(10) */
sgio_bitmap_set(0x2F, D| W|R|O , read); /* VERIFY(10) */
- sgio_bitmap_set(0x37, D| O|M , read); /* READ DEFECT DATA(10) */
+ sgio_bitmap_set(0x37, D| O , read); /* READ DEFECT DATA(10) */
sgio_bitmap_set(0x3E, D| W| O , read); /* READ LONG(10) */
sgio_bitmap_set(0x88, D|T| W| O| B , read); /* READ(16) */
sgio_bitmap_set(0x8F, D|T| W| O| B , read); /* VERIFY(16) */
@@ -199,6 +199,17 @@ static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter)
sgio_bitmap_set(0x10, L , write); /* SYNCHRONIZE BUFFER */
sgio_bitmap_set(0x1B, L , write); /* STOP PRINT */

+ /* media changer */
+
+ sgio_bitmap_set(0x07, M , read); /* INITIALIZE ELEMENT STATUS */
+ sgio_bitmap_set(0x1B, M , read); /* OPEN/CLOSE IMPORT/EXPORT ELEMENT */
+ sgio_bitmap_set(0x2B, M , read); /* POSITION TO ELEMENT */
+ sgio_bitmap_set(0x37, M , read); /* INITIALIZE ELEMENT STATUS WITH RANGE */
+ sgio_bitmap_set(0xB5, M , read); /* REQUEST VOLUME ELEMENT ADDRESS */
+
+ sgio_bitmap_set(0xA6, M , write); /* EXCHANGE MEDIUM */
+ sgio_bitmap_set(0xB6, M , write); /* SEND VOLUME TAG */
+
/* (mostly) MMC */

sgio_bitmap_set(0x23, R , read); /* READ FORMAT CAPACITIES */
@@ -232,9 +243,9 @@ static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter)
sgio_bitmap_set(0xA1, D| R| B , write); /* BLANK / ATA PASS-THROUGH(12) */
sgio_bitmap_set(0xA2, R , write); /* SEND EVENT */
sgio_bitmap_set(0xA3, R , write); /* SEND KEY */
- sgio_bitmap_set(0xA6, R| M , write); /* LOAD/UNLOAD C/DVD */
+ sgio_bitmap_set(0xA6, R , write); /* LOAD/UNLOAD C/DVD */
sgio_bitmap_set(0xA7, R , write); /* SET READ AHEAD */
- sgio_bitmap_set(0xB6, R| M , write); /* SET STREAMING */
+ sgio_bitmap_set(0xB6, R , write); /* SET STREAMING */
sgio_bitmap_set(0xBB, R , write); /* SET CD SPEED */
sgio_bitmap_set(0xBF, R , write); /* SEND DVD STRUCTURE */

--
1.7.1


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