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authorLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 09:06:16 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 09:06:16 -0700
commit4a61f17378c2cdd9bd8f34ef8bd7422861d0c1f1 (patch)
treea2054556900af8c16fd9f5419f012dcf1ee2995a /include
parentd002ec481c24f325ed6cfcb7810d317c015dd1b5 (diff)
parent7ecdb70a0ea436c06540140242bfac6ac3babfc0 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6: (292 commits) [GFS2] Fix endian bug for de_type [GFS2] Initialize SELinux extended attributes at inode creation time. [GFS2] Move logging code into log.c (mostly) [GFS2] Mark nlink cleared so VFS sees it happen [GFS2] Two redundant casts removed [GFS2] Remove uneeded endian conversion [GFS2] Remove duplicate sb reading code [GFS2] Mark metadata reads for blktrace [GFS2] Remove iflags.h, use FS_ [GFS2] Fix code style/indent in ops_file.c [GFS2] streamline-generic_file_-interfaces-and-filemap gfs fix [GFS2] Remove readv/writev methods and use aio_read/aio_write instead (gfs bits) [GFS2] inode-diet: Eliminate i_blksize from the inode structure [GFS2] inode_diet: Replace inode.u.generic_ip with inode.i_private (gfs) [GFS2] Fix typo in last patch [GFS2] Fix direct i/o logic in filemap.c [GFS2] Fix bug in Makefiles for lock modules [GFS2] Remove (extra) fs_subsys declaration [GFS2/DLM] Fix trailing whitespace [GFS2] Tidy up meta_io code ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/Kbuild4
-rw-r--r--include/linux/dlm.h302
-rw-r--r--include/linux/dlm_device.h86
-rw-r--r--include/linux/fs.h2
-rw-r--r--include/linux/gfs2_ondisk.h443
-rw-r--r--include/linux/lm_interface.h273
-rw-r--r--include/linux/lock_dlm_plock.h41
7 files changed, 1151 insertions, 0 deletions
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 7d564b6fc98..ea005c0a79f 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -46,6 +46,7 @@ header-y += coff.h
header-y += comstats.h
header-y += consolemap.h
header-y += cycx_cfm.h
+header-y += dlm_device.h
header-y += dm-ioctl.h
header-y += dn.h
header-y += dqblk_v1.h
@@ -104,6 +105,7 @@ header-y += ixjuser.h
header-y += jffs2.h
header-y += keyctl.h
header-y += limits.h
+header-y += lock_dlm_plock.h
header-y += magic.h
header-y += major.h
header-y += matroxfb.h
@@ -192,6 +194,7 @@ unifdef-y += cyclades.h
unifdef-y += dccp.h
unifdef-y += dirent.h
unifdef-y += divert.h
+unifdef-y += dlm.h
unifdef-y += elfcore.h
unifdef-y += errno.h
unifdef-y += errqueue.h
@@ -208,6 +211,7 @@ unifdef-y += ftape.h
unifdef-y += gameport.h
unifdef-y += generic_serial.h
unifdef-y += genhd.h
+unifdef-y += gfs2_ondisk.h
unifdef-y += hayesesp.h
unifdef-y += hdlcdrv.h
unifdef-y += hdlc.h
diff --git a/include/linux/dlm.h b/include/linux/dlm.h
new file mode 100644
index 00000000000..1b1dcb9a40b
--- /dev/null
+++ b/include/linux/dlm.h
@@ -0,0 +1,302 @@
+/******************************************************************************
+*******************************************************************************
+**
+** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
+** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+**
+** This copyrighted material is made available to anyone wishing to use,
+** modify, copy, or redistribute it subject to the terms and conditions
+** of the GNU General Public License v.2.
+**
+*******************************************************************************
+******************************************************************************/
+
+#ifndef __DLM_DOT_H__
+#define __DLM_DOT_H__
+
+/*
+ * Interface to Distributed Lock Manager (DLM)
+ * routines and structures to use DLM lockspaces
+ */
+
+/*
+ * Lock Modes
+ */
+
+#define DLM_LOCK_IV -1 /* invalid */
+#define DLM_LOCK_NL 0 /* null */
+#define DLM_LOCK_CR 1 /* concurrent read */
+#define DLM_LOCK_CW 2 /* concurrent write */
+#define DLM_LOCK_PR 3 /* protected read */
+#define DLM_LOCK_PW 4 /* protected write */
+#define DLM_LOCK_EX 5 /* exclusive */
+
+/*
+ * Maximum size in bytes of a dlm_lock name
+ */
+
+#define DLM_RESNAME_MAXLEN 64
+
+/*
+ * Flags to dlm_lock
+ *
+ * DLM_LKF_NOQUEUE
+ *
+ * Do not queue the lock request on the wait queue if it cannot be granted
+ * immediately. If the lock cannot be granted because of this flag, DLM will
+ * either return -EAGAIN from the dlm_lock call or will return 0 from
+ * dlm_lock and -EAGAIN in the lock status block when the AST is executed.
+ *
+ * DLM_LKF_CANCEL
+ *
+ * Used to cancel a pending lock request or conversion. A converting lock is
+ * returned to its previously granted mode.
+ *
+ * DLM_LKF_CONVERT
+ *
+ * Indicates a lock conversion request. For conversions the name and namelen
+ * are ignored and the lock ID in the LKSB is used to identify the lock.
+ *
+ * DLM_LKF_VALBLK
+ *
+ * Requests DLM to return the current contents of the lock value block in the
+ * lock status block. When this flag is set in a lock conversion from PW or EX
+ * modes, DLM assigns the value specified in the lock status block to the lock
+ * value block of the lock resource. The LVB is a DLM_LVB_LEN size array
+ * containing application-specific information.
+ *
+ * DLM_LKF_QUECVT
+ *
+ * Force a conversion request to be queued, even if it is compatible with
+ * the granted modes of other locks on the same resource.
+ *
+ * DLM_LKF_IVVALBLK
+ *
+ * Invalidate the lock value block.
+ *
+ * DLM_LKF_CONVDEADLK
+ *
+ * Allows the dlm to resolve conversion deadlocks internally by demoting the
+ * granted mode of a converting lock to NL. The DLM_SBF_DEMOTED flag is
+ * returned for a conversion that's been effected by this.
+ *
+ * DLM_LKF_PERSISTENT
+ *
+ * Only relevant to locks originating in userspace. A persistent lock will not
+ * be removed if the process holding the lock exits.
+ *
+ * DLM_LKF_NODLKWT
+ * DLM_LKF_NODLCKBLK
+ *
+ * net yet implemented
+ *
+ * DLM_LKF_EXPEDITE
+ *
+ * Used only with new requests for NL mode locks. Tells the lock manager
+ * to grant the lock, ignoring other locks in convert and wait queues.
+ *
+ * DLM_LKF_NOQUEUEBAST
+ *
+ * Send blocking AST's before returning -EAGAIN to the caller. It is only
+ * used along with the NOQUEUE flag. Blocking AST's are not sent for failed
+ * NOQUEUE requests otherwise.
+ *
+ * DLM_LKF_HEADQUE
+ *
+ * Add a lock to the head of the convert or wait queue rather than the tail.
+ *
+ * DLM_LKF_NOORDER
+ *
+ * Disregard the standard grant order rules and grant a lock as soon as it
+ * is compatible with other granted locks.
+ *
+ * DLM_LKF_ORPHAN
+ *
+ * not yet implemented
+ *
+ * DLM_LKF_ALTPR
+ *
+ * If the requested mode cannot be granted immediately, try to grant the lock
+ * in PR mode instead. If this alternate mode is granted instead of the
+ * requested mode, DLM_SBF_ALTMODE is returned in the lksb.
+ *
+ * DLM_LKF_ALTCW
+ *
+ * The same as ALTPR, but the alternate mode is CW.
+ *
+ * DLM_LKF_FORCEUNLOCK
+ *
+ * Unlock the lock even if it is converting or waiting or has sublocks.
+ * Only really for use by the userland device.c code.
+ *
+ */
+
+#define DLM_LKF_NOQUEUE 0x00000001
+#define DLM_LKF_CANCEL 0x00000002
+#define DLM_LKF_CONVERT 0x00000004
+#define DLM_LKF_VALBLK 0x00000008
+#define DLM_LKF_QUECVT 0x00000010
+#define DLM_LKF_IVVALBLK 0x00000020
+#define DLM_LKF_CONVDEADLK 0x00000040
+#define DLM_LKF_PERSISTENT 0x00000080
+#define DLM_LKF_NODLCKWT 0x00000100
+#define DLM_LKF_NODLCKBLK 0x00000200
+#define DLM_LKF_EXPEDITE 0x00000400
+#define DLM_LKF_NOQUEUEBAST 0x00000800
+#define DLM_LKF_HEADQUE 0x00001000
+#define DLM_LKF_NOORDER 0x00002000
+#define DLM_LKF_ORPHAN 0x00004000
+#define DLM_LKF_ALTPR 0x00008000
+#define DLM_LKF_ALTCW 0x00010000
+#define DLM_LKF_FORCEUNLOCK 0x00020000
+
+/*
+ * Some return codes that are not in errno.h
+ */
+
+#define DLM_ECANCEL 0x10001
+#define DLM_EUNLOCK 0x10002
+
+typedef void dlm_lockspace_t;
+
+/*
+ * Lock status block
+ *
+ * Use this structure to specify the contents of the lock value block. For a
+ * conversion request, this structure is used to specify the lock ID of the
+ * lock. DLM writes the status of the lock request and the lock ID assigned
+ * to the request in the lock status block.
+ *
+ * sb_lkid: the returned lock ID. It is set on new (non-conversion) requests.
+ * It is available when dlm_lock returns.
+ *
+ * sb_lvbptr: saves or returns the contents of the lock's LVB according to rules
+ * shown for the DLM_LKF_VALBLK flag.
+ *
+ * sb_flags: DLM_SBF_DEMOTED is returned if in the process of promoting a lock,
+ * it was first demoted to NL to avoid conversion deadlock.
+ * DLM_SBF_VALNOTVALID is returned if the resource's LVB is marked invalid.
+ *
+ * sb_status: the returned status of the lock request set prior to AST
+ * execution. Possible return values:
+ *
+ * 0 if lock request was successful
+ * -EAGAIN if request would block and is flagged DLM_LKF_NOQUEUE
+ * -ENOMEM if there is no memory to process request
+ * -EINVAL if there are invalid parameters
+ * -DLM_EUNLOCK if unlock request was successful
+ * -DLM_ECANCEL if a cancel completed successfully
+ */
+
+#define DLM_SBF_DEMOTED 0x01
+#define DLM_SBF_VALNOTVALID 0x02
+#define DLM_SBF_ALTMODE 0x04
+
+struct dlm_lksb {
+ int sb_status;
+ uint32_t sb_lkid;
+ char sb_flags;
+ char * sb_lvbptr;
+};
+
+
+#ifdef __KERNEL__
+
+#define DLM_LSFL_NODIR 0x00000001
+
+/*
+ * dlm_new_lockspace
+ *
+ * Starts a lockspace with the given name. If the named lockspace exists in
+ * the cluster, the calling node joins it.
+ */
+
+int dlm_new_lockspace(char *name, int namelen, dlm_lockspace_t **lockspace,
+ uint32_t flags, int lvblen);
+
+/*
+ * dlm_release_lockspace
+ *
+ * Stop a lockspace.
+ */
+
+int dlm_release_lockspace(dlm_lockspace_t *lockspace, int force);
+
+/*
+ * dlm_lock
+ *
+ * Make an asyncronous request to acquire or convert a lock on a named
+ * resource.
+ *
+ * lockspace: context for the request
+ * mode: the requested mode of the lock (DLM_LOCK_)
+ * lksb: lock status block for input and async return values
+ * flags: input flags (DLM_LKF_)
+ * name: name of the resource to lock, can be binary
+ * namelen: the length in bytes of the resource name (MAX_RESNAME_LEN)
+ * parent: the lock ID of a parent lock or 0 if none
+ * lockast: function DLM executes when it completes processing the request
+ * astarg: argument passed to lockast and bast functions
+ * bast: function DLM executes when this lock later blocks another request
+ *
+ * Returns:
+ * 0 if request is successfully queued for processing
+ * -EINVAL if any input parameters are invalid
+ * -EAGAIN if request would block and is flagged DLM_LKF_NOQUEUE
+ * -ENOMEM if there is no memory to process request
+ * -ENOTCONN if there is a communication error
+ *
+ * If the call to dlm_lock returns an error then the operation has failed and
+ * the AST routine will not be called. If dlm_lock returns 0 it is still
+ * possible that the lock operation will fail. The AST routine will be called
+ * when the locking is complete and the status is returned in the lksb.
+ *
+ * If the AST routines or parameter are passed to a conversion operation then
+ * they will overwrite those values that were passed to a previous dlm_lock
+ * call.
+ *
+ * AST routines should not block (at least not for long), but may make
+ * any locking calls they please.
+ */
+
+int dlm_lock(dlm_lockspace_t *lockspace,
+ int mode,
+ struct dlm_lksb *lksb,
+ uint32_t flags,
+ void *name,
+ unsigned int namelen,
+ uint32_t parent_lkid,
+ void (*lockast) (void *astarg),
+ void *astarg,
+ void (*bast) (void *astarg, int mode));
+
+/*
+ * dlm_unlock
+ *
+ * Asynchronously release a lock on a resource. The AST routine is called
+ * when the resource is successfully unlocked.
+ *
+ * lockspace: context for the request
+ * lkid: the lock ID as returned in the lksb
+ * flags: input flags (DLM_LKF_)
+ * lksb: if NULL the lksb parameter passed to last lock request is used
+ * astarg: the arg used with the completion ast for the unlock
+ *
+ * Returns:
+ * 0 if request is successfully queued for processing
+ * -EINVAL if any input parameters are invalid
+ * -ENOTEMPTY if the lock still has sublocks
+ * -EBUSY if the lock is waiting for a remote lock operation
+ * -ENOTCONN if there is a communication error
+ */
+
+int dlm_unlock(dlm_lockspace_t *lockspace,
+ uint32_t lkid,
+ uint32_t flags,
+ struct dlm_lksb *lksb,
+ void *astarg);
+
+#endif /* __KERNEL__ */
+
+#endif /* __DLM_DOT_H__ */
+
diff --git a/include/linux/dlm_device.h b/include/linux/dlm_device.h
new file mode 100644
index 00000000000..2a2dd189b9f
--- /dev/null
+++ b/include/linux/dlm_device.h
@@ -0,0 +1,86 @@
+/******************************************************************************
+*******************************************************************************
+**
+** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
+** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+**
+** This copyrighted material is made available to anyone wishing to use,
+** modify, copy, or redistribute it subject to the terms and conditions
+** of the GNU General Public License v.2.
+**
+*******************************************************************************
+******************************************************************************/
+
+/* This is the device interface for dlm, most users will use a library
+ * interface.
+ */
+
+#define DLM_USER_LVB_LEN 32
+
+/* Version of the device interface */
+#define DLM_DEVICE_VERSION_MAJOR 5
+#define DLM_DEVICE_VERSION_MINOR 0
+#define DLM_DEVICE_VERSION_PATCH 0
+
+/* struct passed to the lock write */
+struct dlm_lock_params {
+ __u8 mode;
+ __u8 namelen;
+ __u16 flags;
+ __u32 lkid;
+ __u32 parent;
+ void __user *castparam;
+ void __user *castaddr;
+ void __user *bastparam;
+ void __user *bastaddr;
+ struct dlm_lksb __user *lksb;
+ char lvb[DLM_USER_LVB_LEN];
+ char name[0];
+};
+
+struct dlm_lspace_params {
+ __u32 flags;
+ __u32 minor;
+ char name[0];
+};
+
+struct dlm_write_request {
+ __u32 version[3];
+ __u8 cmd;
+ __u8 is64bit;
+ __u8 unused[2];
+
+ union {
+ struct dlm_lock_params lock;
+ struct dlm_lspace_params lspace;
+ } i;
+};
+
+/* struct read from the "device" fd,
+ consists mainly of userspace pointers for the library to use */
+struct dlm_lock_result {
+ __u32 length;
+ void __user * user_astaddr;
+ void __user * user_astparam;
+ struct dlm_lksb __user * user_lksb;
+ struct dlm_lksb lksb;
+ __u8 bast_mode;
+ __u8 unused[3];
+ /* Offsets may be zero if no data is present */
+ __u32 lvb_offset;
+};
+
+/* Commands passed to the device */
+#define DLM_USER_LOCK 1
+#define DLM_USER_UNLOCK 2
+#define DLM_USER_QUERY 3
+#define DLM_USER_CREATE_LOCKSPACE 4
+#define DLM_USER_REMOVE_LOCKSPACE 5
+
+/* Arbitrary length restriction */
+#define MAX_LS_NAME_LEN 64
+
+/* Lockspace flags */
+#define DLM_USER_LSFLG_AUTOFREE 1
+#define DLM_USER_LSFLG_FORCEFREE 2
+
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f53bf4ff195..34406ed467c 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -250,6 +250,8 @@ extern int dir_notify_enable;
#define FS_NOTAIL_FL 0x00008000 /* file tail should not be merged */
#define FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
#define FS_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
+#define FS_EXTENT_FL 0x00080000 /* Extents */
+#define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */
#define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
#define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h
new file mode 100644
index 00000000000..a7ae7c177ca
--- /dev/null
+++ b/include/linux/gfs2_ondisk.h
@@ -0,0 +1,443 @@
+/*
+ * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ */
+
+#ifndef __GFS2_ONDISK_DOT_H__
+#define __GFS2_ONDISK_DOT_H__
+
+#define GFS2_MAGIC 0x01161970
+#define GFS2_BASIC_BLOCK 512
+#define GFS2_BASIC_BLOCK_SHIFT 9
+
+/* Lock numbers of the LM_TYPE_NONDISK type */
+
+#define GFS2_MOUNT_LOCK 0
+#define GFS2_LIVE_LOCK 1
+#define GFS2_TRANS_LOCK 2
+#define GFS2_RENAME_LOCK 3
+
+/* Format numbers for various metadata types */
+
+#define GFS2_FORMAT_NONE 0
+#define GFS2_FORMAT_SB 100
+#define GFS2_FORMAT_RG 200
+#define GFS2_FORMAT_RB 300
+#define GFS2_FORMAT_DI 400
+#define GFS2_FORMAT_IN 500
+#define GFS2_FORMAT_LF 600
+#define GFS2_FORMAT_JD 700
+#define GFS2_FORMAT_LH 800
+#define GFS2_FORMAT_LD 900
+#define GFS2_FORMAT_LB 1000
+#define GFS2_FORMAT_EA 1600
+#define GFS2_FORMAT_ED 1700
+#define GFS2_FORMAT_QC 1400
+/* These are format numbers for entities contained in files */
+#define GFS2_FORMAT_RI 1100
+#define GFS2_FORMAT_DE 1200
+#define GFS2_FORMAT_QU 1500
+/* These are part of the superblock */
+#define GFS2_FORMAT_FS 1801
+#define GFS2_FORMAT_MULTI 1900
+
+/*
+ * An on-disk inode number
+ */
+
+struct gfs2_inum {
+ __be64 no_formal_ino;
+ __be64 no_addr;
+};
+
+static inline int gfs2_inum_equal(const struct gfs2_inum *ino1,
+ const struct gfs2_inum *ino2)
+{
+ return ino1->no_formal_ino == ino2->no_formal_ino &&
+ ino1->no_addr == ino2->no_addr;
+}
+
+/*
+ * Generic metadata head structure
+ * Every inplace buffer logged in the journal must start with this.
+ */
+
+#define GFS2_METATYPE_NONE 0
+#define GFS2_METATYPE_SB 1
+#define GFS2_METATYPE_RG 2
+#define GFS2_METATYPE_RB 3
+#define GFS2_METATYPE_DI 4
+#define GFS2_METATYPE_IN 5
+#define GFS2_METATYPE_LF 6
+#define GFS2_METATYPE_JD 7
+#define GFS2_METATYPE_LH 8
+#define GFS2_METATYPE_LD 9
+#define GFS2_METATYPE_LB 12
+#define GFS2_METATYPE_EA 10
+#define GFS2_METATYPE_ED 11
+#define GFS2_METATYPE_QC 14
+
+struct gfs2_meta_header {
+ __be32 mh_magic;
+ __be32 mh_type;
+ __be64 __pad0; /* Was generation number in gfs1 */
+ __be32 mh_format;
+ __be32 __pad1; /* Was incarnation number in gfs1 */
+};
+
+/*
+ * super-block structure
+ *
+ * It's probably good if SIZEOF_SB <= GFS2_BASIC_BLOCK (512 bytes)
+ *
+ * Order is important, need to be able to read old superblocks to do on-disk
+ * version upgrades.
+ */
+
+/* Address of superblock in GFS2 basic blocks */
+#define GFS2_SB_ADDR 128
+
+/* The lock number for the superblock (must be zero) */
+#define GFS2_SB_LOCK 0
+
+/* Requirement: GFS2_LOCKNAME_LEN % 8 == 0
+ Includes: the fencing zero at the end */
+#define GFS2_LOCKNAME_LEN 64
+
+struct gfs2_sb {
+ struct gfs2_meta_header sb_header;
+
+ __be32 sb_fs_format;
+ __be32 sb_multihost_format;
+ __u32 __pad0; /* Was superblock flags in gfs1 */
+
+ __be32 sb_bsize;
+ __be32 sb_bsize_shift;
+ __u32 __pad1; /* Was journal segment size in gfs1 */
+
+ struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */
+ struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */
+ struct gfs2_inum sb_root_dir;
+
+ char sb_lockproto[GFS2_LOCKNAME_LEN];
+ char sb_locktable[GFS2_LOCKNAME_LEN];
+ /* In gfs1, quota and license dinodes followed */
+};
+
+/*
+ * resource index structure
+ */
+
+struct gfs2_rindex {
+ __be64 ri_addr; /* grp block disk address */
+ __be32 ri_length; /* length of rgrp header in fs blocks */
+ __u32 __pad;
+
+ __be64 ri_data0; /* first data location */
+ __be32 ri_data; /* num of data blocks in rgrp */
+
+ __be32 ri_bitbytes; /* number of bytes in data bitmaps */
+
+ __u8 ri_reserved[64];
+};
+
+/*
+ * resource group header structure
+ */
+
+/* Number of blocks per byte in rgrp */
+#define GFS2_NBBY 4
+#define GFS2_BIT_SIZE 2
+#define GFS2_BIT_MASK 0x00000003
+
+#define GFS2_BLKST_FREE 0
+#define GFS2_BLKST_USED 1
+#define GFS2_BLKST_UNLINKED 2
+#define GFS2_BLKST_DINODE 3
+
+#define GFS2_RGF_JOURNAL 0x00000001
+#define GFS2_RGF_METAONLY 0x00000002
+#define GFS2_RGF_DATAONLY 0x00000004
+#define GFS2_RGF_NOALLOC 0x00000008
+
+struct gfs2_rgrp {
+ struct gfs2_meta_header rg_header;
+
+ __be32 rg_flags;
+ __be32 rg_free;
+ __be32 rg_dinodes;
+ __be32 __pad;
+ __be64 rg_igeneration;
+
+ __u8 rg_reserved[80]; /* Several fields from gfs1 now reserved */
+};
+
+/*
+ * quota structure
+ */
+
+struct gfs2_quota {
+ __be64 qu_limit;
+ __be64 qu_warn;
+ __be64 qu_value;
+ __u8 qu_reserved[64];
+};
+
+/*
+ * dinode structure
+ */
+
+#define GFS2_MAX_META_HEIGHT 10
+#define GFS2_DIR_MAX_DEPTH 17
+
+#define DT2IF(dt) (((dt) << 12) & S_IFMT)
+#define IF2DT(sif) (((sif) & S_IFMT) >> 12)
+
+enum {
+ gfs2fl_Jdata = 0,
+ gfs2fl_ExHash = 1,
+ gfs2fl_Unused = 2,
+ gfs2fl_EaIndirect = 3,
+ gfs2fl_Directio = 4,
+ gfs2fl_Immutable = 5,
+ gfs2fl_AppendOnly = 6,
+ gfs2fl_NoAtime = 7,
+ gfs2fl_Sync = 8,
+ gfs2fl_System = 9,
+ gfs2fl_TruncInProg = 29,
+ gfs2fl_InheritDirectio = 30,
+ gfs2fl_InheritJdata = 31,
+};
+
+/* Dinode flags */
+#define GFS2_DIF_JDATA 0x00000001
+#define GFS2_DIF_EXHASH 0x00000002
+#define GFS2_DIF_UNUSED 0x00000004 /* only in gfs1 */
+#define GFS2_DIF_EA_INDIRECT 0x00000008
+#define GFS2_DIF_DIRECTIO 0x00000010
+#define GFS2_DIF_IMMUTABLE 0x00000020
+#define GFS2_DIF_APPENDONLY 0x00000040
+#define GFS2_DIF_NOATIME 0x00000080
+#define GFS2_DIF_SYNC 0x00000100
+#define GFS2_DIF_SYSTEM 0x00000200 /* New in gfs2 */
+#define GFS2_DIF_TRUNC_IN_PROG 0x20000000 /* New in gfs2 */
+#define GFS2_DIF_INHERIT_DIRECTIO 0x40000000
+#define GFS2_DIF_INHERIT_JDATA 0x80000000
+
+struct gfs2_dinode {
+ struct gfs2_meta_header di_header;
+
+ struct gfs2_inum di_num;
+
+ __be32 di_mode; /* mode of file */
+ __be32 di_uid; /* owner's user id */
+ __be32 di_gid; /* owner's group id */
+ __be32 di_nlink; /* number of links to this file */
+ __be64 di_size; /* number of bytes in file */
+ __be64 di_blocks; /* number of blocks in file */
+ __be64 di_atime; /* time last accessed */
+ __be64 di_mtime; /* time last modified */
+ __be64 di_ctime; /* time last changed */
+ __be32 di_major; /* device major number */
+ __be32 di_minor; /* device minor number */
+
+ /* This section varies from gfs1. Padding added to align with
+ * remainder of dinode
+ */
+ __be64 di_goal_meta; /* rgrp to alloc from next */
+ __be64 di_goal_data; /* data block goal */
+ __be64 di_generation; /* generation number for NFS */
+
+ __be32 di_flags; /* GFS2_DIF_... */
+ __be32 di_payload_format; /* GFS2_FORMAT_... */
+ __u16 __pad1; /* Was ditype in gfs1 */
+ __be16 di_height; /* height of metadata */
+ __u32 __pad2; /* Unused incarnation number from gfs1 */
+
+ /* These only apply to directories */
+ __u16 __pad3; /* Padding */
+ __be16 di_depth; /* Number of bits in the table */
+ __be32 di_entries; /* The number of entries in the directory */
+
+ struct gfs2_inum __pad4; /* Unused even in current gfs1 */
+
+ __be64 di_eattr; /* extended attribute block number */
+
+ __u8 di_reserved[56];
+};
+
+/*
+ * directory structure - many of these per directory file
+ */
+
+#define GFS2_FNAMESIZE 255
+#define GFS2_DIRENT_SIZE(name_len) ((sizeof(struct gfs2_dirent) + (name_len) + 7) & ~7)
+
+struct gfs2_dirent {
+ struct gfs2_inum de_inum;
+ __be32 de_hash;
+ __be16 de_rec_len;
+ __be16 de_name_len;
+ __be16 de_type;
+ __u8 __pad[14];
+};
+
+/*
+ * Header of leaf directory nodes
+ */
+
+struct gfs2_leaf {
+ struct gfs2_meta_header lf_header;
+
+ __be16 lf_depth; /* Depth of leaf */
+ __be16 lf_entries; /* Number of dirents in leaf */
+ __be32 lf_dirent_format; /* Format of the dirents */
+ __be64 lf_next; /* Next leaf, if overflow */
+
+ __u8 lf_reserved[64];
+};
+
+/*
+ * Extended attribute header format
+ */
+
+#define GFS2_EA_MAX_NAME_LEN 255
+#define GFS2_EA_MAX_DATA_LEN 65536
+
+#define GFS2_EATYPE_UNUSED 0
+#define GFS2_EATYPE_USR 1
+#define GFS2_EATYPE_SYS 2
+#define GFS2_EATYPE_SECURITY 3
+
+#define GFS2_EATYPE_LAST 3
+#define GFS2_EATYPE_VALID(x) ((x) <= GFS2_EATYPE_LAST)
+
+#define GFS2_EAFLAG_LAST 0x01 /* last ea in block */
+
+struct gfs2_ea_header {
+ __be32 ea_rec_len;
+ __be32 ea_data_len;
+ __u8 ea_name_len; /* no NULL pointer after the string */
+ __u8 ea_type; /* GFS2_EATYPE_... */
+ __u8 ea_flags; /* GFS2_EAFLAG_... */
+ __u8 ea_num_ptrs;
+ __u32 __pad;
+};
+
+/*
+ * Log header structure
+ */
+
+#define GFS2_LOG_HEAD_UNMOUNT 0x00000001 /* log is clean */
+
+struct gfs2_log_header {
+ struct gfs2_meta_header lh_header;
+
+ __be64 lh_sequence; /* Sequence number of this transaction */
+ __be32 lh_flags; /* GFS2_LOG_HEAD_... */
+ __be32 lh_tail; /* Block number of log tail */
+ __be32 lh_blkno;
+ __be32 lh_hash;
+};
+
+/*
+ * Log type descriptor
+ */
+
+#define GFS2_LOG_DESC_METADATA 300
+/* ld_data1 is the number of metadata blocks in the descriptor.
+ ld_data2 is unused. */
+
+#define GFS2_LOG_DESC_REVOKE 301
+/* ld_data1 is the number of revoke blocks in the descriptor.
+ ld_data2 is unused. */
+
+#define GFS2_LOG_DESC_JDATA 302
+/* ld_data1 is the number of data blocks in the descriptor.
+ ld_data2 is unused. */
+
+struct gfs2_log_descriptor {
+ struct gfs2_meta_header ld_header;
+
+ __be32 ld_type; /* GFS2_LOG_DESC_... */
+ __be32 ld_length; /* Number of buffers in this chunk */
+ __be32 ld_data1; /* descriptor-specific field */
+ __be32 ld_data2; /* descriptor-specific field */
+
+ __u8 ld_reserved[32];
+};
+
+/*
+ * Inum Range
+ * Describe a range of formal inode numbers allocated to
+ * one machine to assign to inodes.
+ */
+
+#define GFS2_INUM_QUANTUM 1048576
+
+struct gfs2_inum_range {
+ __be64 ir_start;
+ __be64 ir_length;
+};
+
+/*
+ * Statfs change
+ * Describes an change to the pool of free and allocated
+ * blocks.
+ */
+
+struct gfs2_statfs_change {
+ __be64 sc_total;
+ __be64 sc_free;
+ __be64 sc_dinodes;
+};
+
+/*
+ * Quota change
+ * Describes an allocation change for a particular
+ * user or group.
+ */
+
+#define GFS2_QCF_USER 0x00000001
+
+struct gfs2_quota_change {
+ __be64 qc_change;
+ __be32 qc_flags; /* GFS2_QCF_... */
+ __be32 qc_id;
+};
+
+#ifdef __KERNEL__
+/* Translation functions */
+
+extern void gfs2_inum_in(struct gfs2_inum *no, const void *buf);
+extern void gfs2_inum_out(const struct gfs2_inum *no, void *buf);
+extern void gfs2_sb_in(struct gfs2_sb *sb, const void *buf);
+extern void gfs2_rindex_in(struct gfs2_rindex *ri, const void *buf);
+extern void gfs2_rindex_out(const struct gfs2_rindex *ri, void *buf);
+extern void gfs2_rgrp_in(struct gfs2_rgrp *rg, const void *buf);
+extern void gfs2_rgrp_out(const struct gfs2_rgrp *rg, void *buf);
+extern void gfs2_quota_in(struct gfs2_quota *qu, const void *buf);
+extern void gfs2_quota_out(const struct gfs2_quota *qu, void *buf);
+extern void gfs2_dinode_in(struct gfs2_dinode *di, const void *buf);
+extern void gfs2_dinode_out(const struct gfs2_dinode *di, void *buf);
+extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, const void *buf);
+extern void gfs2_ea_header_out(const struct gfs2_ea_header *ea, void *buf);
+extern void gfs2_log_header_in(struct gfs2_log_header *lh, const void *buf);
+extern void gfs2_inum_range_in(struct gfs2_inum_range *ir, const void *buf);
+extern void gfs2_inum_range_out(const struct gfs2_inum_range *ir, void *buf);
+extern void gfs2_statfs_change_in(struct gfs2_statfs_change *sc, const void *buf);
+extern void gfs2_statfs_change_out(const struct gfs2_statfs_change *sc, void *buf);
+extern void gfs2_quota_change_in(struct gfs2_quota_change *qc, const void *buf);
+
+/* Printing functions */
+
+extern void gfs2_rindex_print(const struct gfs2_rindex *ri);
+extern void gfs2_dinode_print(const struct gfs2_dinode *di);
+
+#endif /* __KERNEL__ */
+
+#endif /* __GFS2_ONDISK_DOT_H__ */
diff --git a/include/linux/lm_interface.h b/include/linux/lm_interface.h
new file mode 100644
index 00000000000..1418fdc9ac0
--- /dev/null
+++ b/include/linux/lm_interface.h
@@ -0,0 +1,273 @@
+/*
+ * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License version 2.
+ */
+
+#ifndef __LM_INTERFACE_DOT_H__
+#define __LM_INTERFACE_DOT_H__
+
+
+typedef void (*lm_callback_t) (void *ptr, unsigned int type, void *data);
+
+/*
+ * lm_mount() flags
+ *
+ * LM_MFLAG_SPECTATOR
+ * GFS is asking to join the filesystem's lockspace, but it doesn't want to
+ * modify the filesystem. The lock module shouldn't assign a journal to the FS
+ * mount. It shouldn't send recovery callbacks to the FS mount. If the node
+ * dies or withdraws, all locks can be wiped immediately.
+ */
+
+#define LM_MFLAG_SPECTATOR 0x00000001
+
+/*
+ * lm_lockstruct flags
+ *
+ * LM_LSFLAG_LOCAL
+ * The lock_nolock module returns LM_LSFLAG_LOCAL to GFS, indicating that GFS
+ * can make single-node optimizations.
+ */
+
+#define LM_LSFLAG_LOCAL 0x00000001
+
+/*
+ * lm_lockname types
+ */
+
+#define LM_TYPE_RESERVED 0x00
+#define LM_TYPE_NONDISK 0x01
+#define LM_TYPE_INODE 0x02
+#define LM_TYPE_RGRP 0x03
+#define LM_TYPE_META 0x04
+#define LM_TYPE_IOPEN 0x05
+#define LM_TYPE_FLOCK 0x06
+#define LM_TYPE_PLOCK 0x07
+#define LM_TYPE_QUOTA 0x08
+#define LM_TYPE_JOURNAL 0x09
+
+/*
+ * lm_lock() states
+ *
+ * SHARED is compatible with SHARED, not with DEFERRED or EX.
+ * DEFERRED is compatible with DEFERRED, not with SHARED or EX.
+ */
+
+#define LM_ST_UNLOCKED 0
+#define LM_ST_EXCLUSIVE 1
+#define LM_ST_DEFERRED 2
+#define LM_ST_SHARED 3
+
+/*
+ * lm_lock() flags
+ *
+ * LM_FLAG_TRY
+ * Don't wait to acquire the lock if it can't be granted immediately.
+ *
+ * LM_FLAG_TRY_1CB
+ * Send one blocking callback if TRY is set and the lock is not granted.
+ *
+ * LM_FLAG_NOEXP
+ * GFS sets this flag on lock requests it makes while doing journal recovery.
+ * These special requests should not be blocked due to the recovery like
+ * ordinary locks would be.
+ *
+ * LM_FLAG_ANY
+ * A SHARED request may also be granted in DEFERRED, or a DEFERRED request may
+ * also be granted in SHARED. The preferred state is whichever is compatible
+ * with other granted locks, or the specified state if no other locks exist.
+ *
+ * LM_FLAG_PRIORITY
+ * Override fairness considerations. Suppose a lock is held in a shared state
+ * and there is a pending request for the deferred state. A shared lock
+ * request with the priority flag would be allowed to bypass the deferred
+ * request and directly join the other shared lock. A shared lock request
+ * without the priority flag might be forced to wait until the deferred
+ * requested had acquired and released the lock.
+ */
+
+#define LM_FLAG_TRY 0x00000001
+#define LM_FLAG_TRY_1CB 0x00000002
+#define LM_FLAG_NOEXP 0x00000004
+#define LM_FLAG_ANY 0x00000008
+#define LM_FLAG_PRIORITY 0x00000010
+
+/*
+ * lm_lock() and lm_async_cb return flags
+ *
+ * LM_OUT_ST_MASK
+ * Masks the lower two bits of lock state in the returned value.
+ *
+ * LM_OUT_CACHEABLE
+ * The lock hasn't been released so GFS can continue to cache data for it.
+ *
+ * LM_OUT_CANCELED
+ * The lock request was canceled.
+ *
+ * LM_OUT_ASYNC
+ * The result of the request will be returned in an LM_CB_ASYNC callback.
+ */
+
+#define LM_OUT_ST_MASK 0x00000003
+#define LM_OUT_CACHEABLE 0x00000004
+#define LM_OUT_CANCELED 0x00000008
+#define LM_OUT_ASYNC 0x00000080
+#define LM_OUT_ERROR 0x00000100
+
+/*
+ * lm_callback_t types
+ *
+ * LM_CB_NEED_E LM_CB_NEED_D LM_CB_NEED_S
+ * Blocking callback, a remote node is requesting the given lock in
+ * EXCLUSIVE, DEFERRED, or SHARED.
+ *
+ * LM_CB_NEED_RECOVERY
+ * The given journal needs to be recovered.
+ *
+ * LM_CB_DROPLOCKS
+ * Reduce the number of cached locks.
+ *
+ * LM_CB_ASYNC
+ * The given lock has been granted.
+ */
+
+#define LM_CB_NEED_E 257
+#define LM_CB_NEED_D 258
+#define LM_CB_NEED_S 259
+#define LM_CB_NEED_RECOVERY 260
+#define LM_CB_DROPLOCKS 261
+#define LM_CB_ASYNC 262
+
+/*
+ * lm_recovery_done() messages
+ */
+
+#define LM_RD_GAVEUP 308
+#define LM_RD_SUCCESS 309
+
+
+struct lm_lockname {
+ u64 ln_number;
+ unsigned int ln_type;
+};
+
+#define lm_name_equal(name1, name2) \
+ (((name1)->ln_number == (name2)->ln_number) && \
+ ((name1)->ln_type == (name2)->ln_type)) \
+
+struct lm_async_cb {
+ struct lm_lockname lc_name;
+ int lc_ret;
+};
+
+struct lm_lockstruct;
+
+struct lm_lockops {
+ const char *lm_proto_name;
+
+ /*
+ * Mount/Unmount
+ */
+
+ int (*lm_mount) (char *table_name, char *host_data,
+ lm_callback_t cb, void *cb_data,
+ unsigned int min_lvb_size, int flags,
+ struct lm_lockstruct *lockstruct,
+ struct kobject *fskobj);
+
+ void (*lm_others_may_mount) (void *lockspace);
+
+ void (*lm_unmount) (void *lockspace);
+
+ void (*lm_withdraw) (void *lockspace);
+
+ /*
+ * Lock oriented operations
+ */
+
+ int (*lm_get_lock) (void *lockspace, struct lm_lockname *name, void **lockp);
+
+ void (*lm_put_lock) (void *lock);
+
+ unsigned int (*lm_lock) (void *lock, unsigned int cur_state,
+ unsigned int req_state, unsigned int flags);
+
+ unsigned int (*lm_unlock) (void *lock, unsigned int cur_state);
+
+ void (*lm_cancel) (void *lock);
+
+ int (*lm_hold_lvb) (void *lock, char **lvbp);
+ void (*lm_unhold_lvb) (void *lock, char *lvb);
+
+ /*
+ * Posix Lock oriented operations
+ */
+
+ int (*lm_plock_get) (void *lockspace, struct lm_lockname *name,
+ struct file *file, struct file_lock *fl);
+
+ int (*lm_plock) (void *lockspace, struct lm_lockname *name,
+ struct file *file, int cmd, struct file_lock *fl);
+
+ int (*lm_punlock) (void *lockspace, struct lm_lockname *name,
+ struct file *file, struct file_lock *fl);
+
+ /*
+ * Client oriented operations
+ */
+
+ void (*lm_recovery_done) (void *lockspace, unsigned int jid,
+ unsigned int message);
+
+ struct module *lm_owner;
+};
+
+/*
+ * lm_mount() return values
+ *
+ * ls_jid - the journal ID this node should use
+ * ls_first - this node is the first to mount the file system
+ * ls_lvb_size - size in bytes of lock value blocks
+ * ls_lockspace - lock module's context for this file system
+ * ls_ops - lock module's functions
+ * ls_flags - lock module features
+ */
+
+struct lm_lockstruct {
+ unsigned int ls_jid;
+ unsigned int ls_first;
+ unsigned int ls_lvb_size;
+ void *ls_lockspace;
+ const struct lm_lockops *ls_ops;
+ int ls_flags;
+};
+
+/*
+ * Lock module bottom interface. A lock module makes itself available to GFS
+ * with these functions.
+ */
+
+int gfs2_register_lockproto(const struct lm_lockops *proto);
+void gfs2_unregister_lockproto(const struct lm_lockops *proto);
+
+/*
+ * Lock module top interface. GFS calls these functions when mounting or
+ * unmounting a file system.
+ */
+
+int gfs2_mount_lockproto(char *proto_name, char *table_name, char *host_data,
+ lm_callback_t cb, void *cb_data,
+ unsigned int min_lvb_size, int flags,
+ struct lm_lockstruct *lockstruct,
+ struct kobject *fskobj);
+
+void gfs2_unmount_lockproto(struct lm_lockstruct *lockstruct);
+
+void gfs2_withdraw_lockproto(struct lm_lockstruct *lockstruct);
+
+#endif /* __LM_INTERFACE_DOT_H__ */
+
diff --git a/include/linux/lock_dlm_plock.h b/include/linux/lock_dlm_plock.h
new file mode 100644
index 00000000000..fc341511397
--- /dev/null
+++ b/include/linux/lock_dlm_plock.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ */
+
+#ifndef __LOCK_DLM_PLOCK_DOT_H__
+#define __LOCK_DLM_PLOCK_DOT_H__
+
+#define GDLM_PLOCK_MISC_NAME "lock_dlm_plock"
+
+#define GDLM_PLOCK_VERSION_MAJOR 1
+#define GDLM_PLOCK_VERSION_MINOR 1
+#define GDLM_PLOCK_VERSION_PATCH 0
+
+enum {
+ GDLM_PLOCK_OP_LOCK = 1,
+ GDLM_PLOCK_OP_UNLOCK,
+ GDLM_PLOCK_OP_GET,
+};
+
+struct gdlm_plock_info {
+ __u32 version[3];
+ __u8 optype;
+ __u8 ex;
+ __u8 wait;
+ __u8 pad;
+ __u32 pid;
+ __s32 nodeid;
+ __s32 rv;
+ __u32 fsid;
+ __u64 number;
+ __u64 start;
+ __u64 end;
+ __u64 owner;
+};
+
+#endif
+