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blockdev: add topology ioctls support 

new options:

   --getpbsz                      get physical block (sector) size
   --getiomin                     get minimum I/O size
   --getioopt                     get optimal I/O size
   --getalignoff                  get alignment offset
   --getmaxsect                   get max sectors per request

Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2009-10-15 01:22:42 +02:00
parent 726fa24e73
commit d965d63f64
2 changed files with 37 additions and 1 deletions
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32
disk-utils/blockdev.c
View File

@ -78,7 +78,37 @@ struct bdc bdcms[] =
.name = "--getss",
.argtype = ARG_INT,
.argval = -1,
.help = N_("get sectorsize")
.help = N_("get logical block (sector) size")
},{
IOCTL_ENTRY(BLKPBSZGET),
.name = "--getpbsz",
.argtype = ARG_UINT,
.argval = -1,
.help = N_("get physical block (sector) size")
},{
IOCTL_ENTRY(BLKIOMIN),
.name = "--getiomin",
.argtype = ARG_UINT,
.argval = -1,
.help = N_("get minimum I/O size")
},{
IOCTL_ENTRY(BLKIOOPT),
.name = "--getioopt",
.argtype = ARG_UINT,
.argval = -1,
.help = N_("get optimal I/O size")
},{
IOCTL_ENTRY(BLKALIGNOFF),
.name = "--getalignoff",
.argtype = ARG_INT,
.argtype = -1,
.help = N_("get alignment offset")
},{
IOCTL_ENTRY(BLKSECTGET),
.name = "--getmaxsect",
.argtype = ARG_USHRT,
.argval = -1,
.help = N_("get max sectors per request")
},{
IOCTL_ENTRY(BLKBSZGET),
.name = "--getbsz",

6
include/blkdev.h
View File

@ -34,6 +34,12 @@
#define BLKBSZSET _IOW(0x12,113,size_t)
#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
/* block device topology ioctls, introduced in 2.6.32 */
#define BLKIOMIN _IO(0x1,120)
#define BLKIOOPT _IO(0x12,121)
#define BLKALIGNOFF _IO(0x12,122)
#define BLKPBSZGET _IO(0x12,123)
#endif /* BLKROSET */
#ifndef HDIO_GETGEO