lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

allow userspace to modify scsi command filter on per device basis

Browse Source 
This patch exports the per-gendisk command filter to user space through
sysfs, so it can be changed by the system administrator.
All users of the old cmd filter have been converted to use the new one.

Original patch from Peter Jones.

Signed-off-by: Adel Gadllah <adel.gadllah@gmail.com>
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Adel Gadllah
2008-06-26 13:48:27 +02:00
committed by Jens Axboe
parent 6e2401ad6f
commit 0b07de85a7
8 changed files with 389 additions and 159 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
include/linux/genhd.h
View File

@ -110,6 +110,14 @@ struct hd_struct {
#define GENHD_FL_SUPPRESS_PARTITION_INFO 32
#define GENHD_FL_FAIL 64
#define BLK_SCSI_MAX_CMDS (256)
#define BLK_SCSI_CMD_PER_LONG (BLK_SCSI_MAX_CMDS / (sizeof(long) * 8))
struct blk_scsi_cmd_filter {
unsigned long read_ok[BLK_SCSI_CMD_PER_LONG];
unsigned long write_ok[BLK_SCSI_CMD_PER_LONG];
struct kobject kobj;
};
struct gendisk {
int major; /* major number of driver */
@ -120,6 +128,7 @@ struct gendisk {
struct hd_struct **part; /* [indexed by minor] */
struct block_device_operations *fops;
struct request_queue *queue;
struct blk_scsi_cmd_filter cmd_filter;
void *private_data;
sector_t capacity;