vserver 1.9.5.x5

[linux-2.6.git] / include / linux / dm-ioctl.h

diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h
index 03f99db..f5eb6b6 100644 (file)
--- a/include/linux/dm-ioctl.h
+++ b/include/linux/dm-ioctl.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2001 - 2003 Sistina Software (UK) Limited.
+ * Copyright (C) 2004 - 2005 Red Hat, Inc. All rights reserved.
  *
  * This file is released under the LGPL.
  */
@@ -76,6 +77,9 @@
  *
  * DM_TABLE_STATUS:
  * Return the targets status for the 'active' table.
+ *
+ * DM_TARGET_MSG:
+ * Pass a message string to the target at a specific offset of a device.
  */
 
 /*
@@ -178,6 +182,15 @@ struct dm_target_versions {
         char name[0];
 };
 
+/*
+ * Used to pass message to a target
+ */
+struct dm_target_msg {
+       uint64_t sector;        /* Device sector */
+
+       char message[0];
+};
+
 /*
  * If you change this make sure you make the corresponding change
  * to dm-ioctl.c:lookup_ioctl()
@@ -204,6 +217,7 @@ enum {
 
        /* Added later */
        DM_LIST_VERSIONS_CMD,
+       DM_TARGET_MSG_CMD,
 };
 
 /*
@@ -232,6 +246,7 @@ typedef char ioctl_struct[308];
 #define DM_TABLE_DEPS_32    _IOWR(DM_IOCTL, DM_TABLE_DEPS_CMD, ioctl_struct)
 #define DM_TABLE_STATUS_32  _IOWR(DM_IOCTL, DM_TABLE_STATUS_CMD, ioctl_struct)
 #define DM_LIST_VERSIONS_32 _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, ioctl_struct)
+#define DM_TARGET_MSG_32    _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, ioctl_struct)
 #endif
 
 #define DM_IOCTL 0xfd
@@ -254,10 +269,12 @@ typedef char ioctl_struct[308];
 
 #define DM_LIST_VERSIONS _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, struct dm_ioctl)
 
+#define DM_TARGET_MSG   _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
+
 #define DM_VERSION_MAJOR       4
-#define DM_VERSION_MINOR       1
+#define DM_VERSION_MINOR       4
 #define DM_VERSION_PATCHLEVEL  0
-#define DM_VERSION_EXTRA       "-ioctl (2003-12-10)"
+#define DM_VERSION_EXTRA       "-ioctl (2005-01-12)"
 
 /* Status bits */
 #define DM_READONLY_FLAG       (1 << 0) /* In/Out */
@@ -283,4 +300,9 @@ typedef char ioctl_struct[308];
  */
 #define DM_BUFFER_FULL_FLAG    (1 << 8) /* Out */
 
+/*
+ * Set this to improve performance when you aren't going to use open_count
+ */
+#define DM_SKIP_BDGET_FLAG     (1 << 9) /* In */
+
 #endif                         /* _LINUX_DM_IOCTL_H */