linux-stable.git/drivers/cdrom, branch v4.12.2

scsi: introduce a result field in struct scsi_request

2017-04-20T18:16:10+00:00

This passes on the scsi_cmnd result field to users of passthrough
requests.  Currently we abuse req->errors for this purpose, but that
field will go away in its current form.

Note that the old IDE code abuses the errors field in very creative
ways and stores all kinds of different values in it.  I didn't dare
to touch this magic, so the abuses are brought forward 1:1.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Martin K. Petersen 
Reviewed-by: Bart Van Assche 
Signed-off-by: Jens Axboe

block: remove the blk_execute_rq return value

2017-04-20T18:16:10+00:00

The function only returns -EIO if rq->errors is non-zero, which is not
very useful and lets a large number of callers ignore the return value.

Just let the callers figure out their error themselves.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Bart Van Assche 
Signed-off-by: Jens Axboe

Merge branch 'for-4.11/next' into for-4.11/linus-merge

2017-02-17T21:08:19+00:00

Signed-off-by: Jens Axboe

cdrom: Make device operations read-only

2017-02-14T15:29:56+00:00

Since function tables are a common target for attackers, it's best to keep
them in read-only memory. As such, this makes the CDROM device ops tables
const. This drops additionally n_minors, since it isn't used meaningfully,
and sets the only user of cdrom_dummy_generic_packet explicitly so the
variables can all be const.

Inspired by similar changes in grsecurity/PaX.

Signed-off-by: Kees Cook 
Acked-by: David S. Miller 
Signed-off-by: Jens Axboe

gdrom: Add missing error code

2017-02-07T23:17:16+00:00

In case of error, 'err' is known to be 0 here, because of the previous
test. Set it to a -ENOMEM instead.

Signed-off-by: Christophe JAILLET 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

block: fold cmd_type into the REQ_OP_ space

2017-01-31T21:00:44+00:00

Instead of keeping two levels of indirection for requests types, fold it
all into the operations.  The little caveat here is that previously
cmd_type only applied to struct request, while the request and bio op
fields were set to plain REQ_OP_READ/WRITE even for passthrough
operations.

Instead this patch adds new REQ_OP_* for SCSI passthrough and driver
private requests, althought it has to add two for each so that we
can communicate the data in/out nature of the request.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

block: split scsi_request out of struct request

2017-01-27T22:08:35+00:00

And require all drivers that want to support BLOCK_PC to allocate it
as the first thing of their private data.  To support this the legacy
IDE and BSG code is switched to set cmd_size on their queues to let
the block layer allocate the additional space.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

Replace with globally

2016-12-24T19:46:01+00:00

This was entirely automated, using the script by Al:

  PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*'
  sed -i -e "s!$PATT!#include !" \
        $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)

to do the replacement at the end of the merge window.

Requested-by: Al Viro 
Signed-off-by: Linus Torvalds

cdrom: support read sub-channel command in LBA format

2016-07-12T15:24:50+00:00

userspace application can send READ_SUB_CHANNEL command with time bit
enabled and disabled. The time bit allows selection of address reporting
format. If the time bit is disabled the response is in logical block
address(CDROM_LBA) format, represented as a 32-bit integer with ms-byte
first. If the time bit is enabled the response is in time format i.e.,
minutes, second, frame (CDROM_MSF) format.

Signed-off-by: vchannaiah 
Signed-off-by: Mahendran Kuppusamy 
[veeraiyan.chidambaram@in.bosch.com: updated Documentation/ioctl/cdrom.txt]
Signed-off-by: Veeraiyan Chidambaram 
Signed-off-by: Jens Axboe

cdrom: don't open-code memdup_user()

2016-01-06T13:25:24+00:00

Signed-off-by: Al Viro