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authorDarrick J. Wong <djwong@us.ibm.com>2006-03-27 04:17:54 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-27 11:44:59 -0500
commit3ac51e741a46af7a20f55e79d3e3aeaa93c6c544 (patch)
treecab595a4d9691d7602616337b7862a1a3d692b97 /include
parent1134e5ae79bab61c05657ca35a6297cf87202e35 (diff)
[PATCH] dm store geometry
Allow drive geometry to be stored with a new DM_DEV_SET_GEOMETRY ioctl. Device-mapper will now respond to HDIO_GETGEO. If the geometry information is not available, zero will be returned for all of the parameters. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/compat_ioctl.h2
-rw-r--r--include/linux/dm-ioctl.h17
2 files changed, 17 insertions, 2 deletions
diff --git a/include/linux/compat_ioctl.h b/include/linux/compat_ioctl.h
index efb518f16bb3..89ab677cb993 100644
--- a/include/linux/compat_ioctl.h
+++ b/include/linux/compat_ioctl.h
@@ -140,6 +140,7 @@ COMPATIBLE_IOCTL(DM_TABLE_DEPS_32)
140COMPATIBLE_IOCTL(DM_TABLE_STATUS_32) 140COMPATIBLE_IOCTL(DM_TABLE_STATUS_32)
141COMPATIBLE_IOCTL(DM_LIST_VERSIONS_32) 141COMPATIBLE_IOCTL(DM_LIST_VERSIONS_32)
142COMPATIBLE_IOCTL(DM_TARGET_MSG_32) 142COMPATIBLE_IOCTL(DM_TARGET_MSG_32)
143COMPATIBLE_IOCTL(DM_DEV_SET_GEOMETRY_32)
143COMPATIBLE_IOCTL(DM_VERSION) 144COMPATIBLE_IOCTL(DM_VERSION)
144COMPATIBLE_IOCTL(DM_REMOVE_ALL) 145COMPATIBLE_IOCTL(DM_REMOVE_ALL)
145COMPATIBLE_IOCTL(DM_LIST_DEVICES) 146COMPATIBLE_IOCTL(DM_LIST_DEVICES)
@@ -155,6 +156,7 @@ COMPATIBLE_IOCTL(DM_TABLE_DEPS)
155COMPATIBLE_IOCTL(DM_TABLE_STATUS) 156COMPATIBLE_IOCTL(DM_TABLE_STATUS)
156COMPATIBLE_IOCTL(DM_LIST_VERSIONS) 157COMPATIBLE_IOCTL(DM_LIST_VERSIONS)
157COMPATIBLE_IOCTL(DM_TARGET_MSG) 158COMPATIBLE_IOCTL(DM_TARGET_MSG)
159COMPATIBLE_IOCTL(DM_DEV_SET_GEOMETRY)
158/* Big K */ 160/* Big K */
159COMPATIBLE_IOCTL(PIO_FONT) 161COMPATIBLE_IOCTL(PIO_FONT)
160COMPATIBLE_IOCTL(GIO_FONT) 162COMPATIBLE_IOCTL(GIO_FONT)
diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h
index fa75ba0d635e..c67c6786612a 100644
--- a/include/linux/dm-ioctl.h
+++ b/include/linux/dm-ioctl.h
@@ -80,6 +80,16 @@
80 * 80 *
81 * DM_TARGET_MSG: 81 * DM_TARGET_MSG:
82 * Pass a message string to the target at a specific offset of a device. 82 * Pass a message string to the target at a specific offset of a device.
83 *
84 * DM_DEV_SET_GEOMETRY:
85 * Set the geometry of a device by passing in a string in this format:
86 *
87 * "cylinders heads sectors_per_track start_sector"
88 *
89 * Beware that CHS geometry is nearly obsolete and only provided
90 * for compatibility with dm devices that can be booted by a PC
91 * BIOS. See struct hd_geometry for range limits. Also note that
92 * the geometry is erased if the device size changes.
83 */ 93 */
84 94
85/* 95/*
@@ -218,6 +228,7 @@ enum {
218 /* Added later */ 228 /* Added later */
219 DM_LIST_VERSIONS_CMD, 229 DM_LIST_VERSIONS_CMD,
220 DM_TARGET_MSG_CMD, 230 DM_TARGET_MSG_CMD,
231 DM_DEV_SET_GEOMETRY_CMD
221}; 232};
222 233
223/* 234/*
@@ -247,6 +258,7 @@ typedef char ioctl_struct[308];
247#define DM_TABLE_STATUS_32 _IOWR(DM_IOCTL, DM_TABLE_STATUS_CMD, ioctl_struct) 258#define DM_TABLE_STATUS_32 _IOWR(DM_IOCTL, DM_TABLE_STATUS_CMD, ioctl_struct)
248#define DM_LIST_VERSIONS_32 _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, ioctl_struct) 259#define DM_LIST_VERSIONS_32 _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, ioctl_struct)
249#define DM_TARGET_MSG_32 _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, ioctl_struct) 260#define DM_TARGET_MSG_32 _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, ioctl_struct)
261#define DM_DEV_SET_GEOMETRY_32 _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, ioctl_struct)
250#endif 262#endif
251 263
252#define DM_IOCTL 0xfd 264#define DM_IOCTL 0xfd
@@ -270,11 +282,12 @@ typedef char ioctl_struct[308];
270#define DM_LIST_VERSIONS _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, struct dm_ioctl) 282#define DM_LIST_VERSIONS _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, struct dm_ioctl)
271 283
272#define DM_TARGET_MSG _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl) 284#define DM_TARGET_MSG _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
285#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
273 286
274#define DM_VERSION_MAJOR 4 287#define DM_VERSION_MAJOR 4
275#define DM_VERSION_MINOR 5 288#define DM_VERSION_MINOR 6
276#define DM_VERSION_PATCHLEVEL 0 289#define DM_VERSION_PATCHLEVEL 0
277#define DM_VERSION_EXTRA "-ioctl (2005-10-04)" 290#define DM_VERSION_EXTRA "-ioctl (2006-02-17)"
278 291
279/* Status bits */ 292/* Status bits */
280#define DM_READONLY_FLAG (1 << 0) /* In/Out */ 293#define DM_READONLY_FLAG (1 << 0) /* In/Out */