From: Bart Van Assche <bvanassche@acm.org>
To: Hannes Reinecke <hare@suse.de>,
"Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>,
James Bottomley <james.bottomley@hansenpartnership.com>,
Johannes Thumshirn <jthumshirn@suse.de>,
linux-scsi@vger.kernel.org
Subject: Re: [PATCH 19/24] scsi_ioctl: return error code when blk_map_user() fails
Date: Mon, 21 Oct 2019 09:44:40 -0700 [thread overview]
Message-ID: <f636567d-9152-c05c-ccb8-7d4df806a2b7@acm.org> (raw)
In-Reply-To: <20191021095322.137969-20-hare@suse.de>
On 10/21/19 2:53 AM, Hannes Reinecke wrote:
> When failing to map the user buffer we should return the actual
> error code, avoiding the usage of DRIVER_ERROR.
>
> Signed-off-by: Hannes Reinecke <hare@suse.de>
> ---
> block/scsi_ioctl.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
> index f5e0ad65e86a..1ab1b8d9641c 100644
> --- a/block/scsi_ioctl.c
> +++ b/block/scsi_ioctl.c
> @@ -485,9 +485,10 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
> break;
> }
>
> - if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, GFP_NOIO)) {
> - err = DRIVER_ERROR << 24;
> - goto error;
> + if (bytes) {
> + err = blk_rq_map_kern(q, rq, buffer, bytes, GFP_NOIO);
> + if (err)
> + goto error;
> }
>
> blk_execute_rq(q, disk, rq, 0);
Since sg_scsi_ioctl() is used to implement SCSI_IOCTL_SEND_COMMAND, does
this patch change the ABI between user space and kernel in a
backwards-incompatible way?
Thanks,
Bart.
next prev parent reply other threads:[~2019-10-21 16:44 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-21 9:52 [PATCH RFC 00/24] scsi: Revamp result values Hannes Reinecke
2019-10-21 9:52 ` [PATCH 01/24] aic7xxx,aic79xxx: remove driver-defined SAM status definitions Hannes Reinecke
2019-10-21 9:53 ` [PATCH 02/24] bfa: drop driver-defined SCSI status codes Hannes Reinecke
2019-10-21 9:53 ` [PATCH 03/24] wd33c93: use SCSI status Hannes Reinecke
2019-10-21 18:41 ` kbuild test robot
2019-10-21 23:16 ` Finn Thain
2019-10-22 5:59 ` Hannes Reinecke
2019-10-21 9:53 ` [PATCH 04/24] acornscsi: use standard defines Hannes Reinecke
2019-10-21 9:53 ` [PATCH 05/24] scsi: use standard SAM status codes Hannes Reinecke
2019-10-21 23:17 ` Finn Thain
2019-10-22 6:00 ` Hannes Reinecke
2019-10-21 9:53 ` [PATCH 06/24] scsi: change status_byte() to return the standard SCSI status Hannes Reinecke
2019-10-22 12:35 ` Steffen Maier
2019-10-21 9:53 ` [PATCH 07/24] target_core: Fixup target_complete_cmd() usage Hannes Reinecke
2019-10-21 9:53 ` [PATCH 08/24] sg: use SAM status definitions and avoid using masked_status Hannes Reinecke
2019-10-21 9:53 ` [PATCH 09/24] scsi: Kill obsolete linux-specific status codes Hannes Reinecke
2019-10-21 18:12 ` kbuild test robot
2019-10-21 18:56 ` kbuild test robot
2019-10-21 9:53 ` [PATCH 10/24] scsi: introduce set_status_byte() Hannes Reinecke
2019-10-21 22:12 ` Finn Thain
2019-10-22 5:56 ` Hannes Reinecke
2019-10-21 9:53 ` [PATCH 11/24] advansys: kill driver_defined status byte accessors Hannes Reinecke
2019-10-21 16:37 ` Bart Van Assche
2019-10-22 6:25 ` Hannes Reinecke
2019-10-21 9:53 ` [PATCH 12/24] scsi: introduce scsi_build_sense() Hannes Reinecke
2019-10-21 23:31 ` Finn Thain
2019-10-22 6:02 ` Hannes Reinecke
2019-10-22 12:21 ` Steffen Maier
2019-10-21 9:53 ` [PATCH 13/24] scsi: Kill DRIVER_SENSE Hannes Reinecke
2019-10-21 23:44 ` Finn Thain
2019-10-22 6:10 ` Hannes Reinecke
2021-06-04 6:40 ` Jiri Slaby
2021-06-07 12:21 ` Hannes Reinecke
2021-06-07 12:30 ` Martin K. Petersen
2021-06-07 13:02 ` Hannes Reinecke
2021-06-10 10:52 ` Jiri Slaby
2021-06-10 14:01 ` Hannes Reinecke
2021-06-11 4:50 ` Jiri Slaby
2021-06-11 7:38 ` Hannes Reinecke
2021-06-14 6:29 ` Jiri Slaby
2021-06-14 7:20 ` Jiri Slaby
2019-10-21 9:53 ` [PATCH 14/24] scsi: Kill DRIVER_HARD Hannes Reinecke
2019-10-21 9:53 ` [PATCH 15/24] scsi_error: use DID_TIME_OUT instead of DRIVER_TIMEOUT Hannes Reinecke
2019-10-21 9:53 ` [PATCH 16/24] scsi: Kill DRIVER_TIMEOUT Hannes Reinecke
2019-10-21 9:53 ` [PATCH 17/24] scsi: do not use DRIVER_INVALID Hannes Reinecke
2019-10-21 9:53 ` [PATCH 18/24] st: return error code in st_scsi_execute() Hannes Reinecke
2019-10-21 16:41 ` Bart Van Assche
2019-10-22 6:28 ` Hannes Reinecke
2019-10-22 14:54 ` Bart Van Assche
2019-10-21 9:53 ` [PATCH 19/24] scsi_ioctl: return error code when blk_map_user() fails Hannes Reinecke
2019-10-21 16:44 ` Bart Van Assche [this message]
2019-10-22 6:32 ` Hannes Reinecke
2019-10-21 9:53 ` [PATCH 20/24] scsi_dh_alua: do not interpret DRIVER_ERROR Hannes Reinecke
2019-10-21 9:53 ` [PATCH 21/24] xen-scsiback: stop using DRIVER_ERROR Hannes Reinecke
2019-10-21 9:53 ` [PATCH 22/24] scsi: " Hannes Reinecke
2019-10-21 9:53 ` [PATCH 23/24] scsi: Kill DRIVER_MEDIA, DRIVER_SOFT, and DRIVER_BUSY Hannes Reinecke
2019-10-21 9:53 ` [PATCH 24/24] scsi: Drop now obsolete driver_byte definitions Hannes Reinecke
2019-10-21 18:32 ` [PATCH RFC 00/24] scsi: Revamp result values Douglas Gilbert
2019-10-21 23:20 ` Finn Thain
2019-10-22 6:24 ` Hannes Reinecke
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