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>
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@ -78,7 +78,37 @@ struct bdc bdcms[] =
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.name = "--getss",
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.argtype = ARG_INT,
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.argval = -1,
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.help = N_("get sectorsize")
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.help = N_("get logical block (sector) size")
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},{
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IOCTL_ENTRY(BLKPBSZGET),
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.name = "--getpbsz",
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.argtype = ARG_UINT,
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.argval = -1,
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.help = N_("get physical block (sector) size")
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},{
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IOCTL_ENTRY(BLKIOMIN),
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.name = "--getiomin",
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.argtype = ARG_UINT,
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.argval = -1,
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.help = N_("get minimum I/O size")
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},{
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IOCTL_ENTRY(BLKIOOPT),
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.name = "--getioopt",
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.argtype = ARG_UINT,
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.argval = -1,
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.help = N_("get optimal I/O size")
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},{
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IOCTL_ENTRY(BLKALIGNOFF),
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.name = "--getalignoff",
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.argtype = ARG_INT,
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.argtype = -1,
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.help = N_("get alignment offset")
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},{
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IOCTL_ENTRY(BLKSECTGET),
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.name = "--getmaxsect",
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.argtype = ARG_USHRT,
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.argval = -1,
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.help = N_("get max sectors per request")
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},{
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IOCTL_ENTRY(BLKBSZGET),
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.name = "--getbsz",
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@ -34,6 +34,12 @@
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#define BLKBSZSET _IOW(0x12,113,size_t)
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#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
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/* block device topology ioctls, introduced in 2.6.32 */
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#define BLKIOMIN _IO(0x1,120)
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#define BLKIOOPT _IO(0x12,121)
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#define BLKALIGNOFF _IO(0x12,122)
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#define BLKPBSZGET _IO(0x12,123)
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#endif /* BLKROSET */
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#ifndef HDIO_GETGEO
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