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| author |   David Howells <dhowells@redhat.com> | 2007-07-15 23:40:12 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-16 09:05:43 -0700 |
| commit | e8d6c554126b830217c5e9f549e0e21f865a0a8a (patch) | |
| tree | c43219c6ef4e6a9b4f0ac46d6bd8b675dc249a8b /fs/afs/internal.h | |
| parent | Char: n_hdlc, allow RESTARTSYS retval of tty write (diff) | |
| download | linux-dev-e8d6c554126b830217c5e9f549e0e21f865a0a8a.tar.xz linux-dev-e8d6c554126b830217c5e9f549e0e21f865a0a8a.zip | |
AFS: implement file locking
Implement file locking for AFS.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/afs/internal.h')
| -rw-r--r-- | fs/afs/internal.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 2c55dd94a1de..6306438f331f 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -351,10 +351,18 @@ struct afs_vnode { #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ +#define AFS_VNODE_LOCKING 6 /* set if waiting for lock on vnode */ +#define AFS_VNODE_READLOCKED 7 /* set if vnode is read-locked on the server */ +#define AFS_VNODE_WRITELOCKED 8 /* set if vnode is write-locked on the server */ +#define AFS_VNODE_UNLOCKING 9 /* set if vnode is being unlocked on the server */ long acl_order; /* ACL check count (callback break count) */ struct list_head writebacks; /* alterations in pagecache that need writing */ + struct list_head pending_locks; /* locks waiting to be granted */ + struct list_head granted_locks; /* locks granted on this file */ + struct delayed_work lock_work; /* work to be done in locking */ + struct key *unlock_key; /* key to be used in unlocking */ /* outstanding callback notification on this file */ struct rb_node server_rb; /* link in server->fs_vnodes */ @@ -474,6 +482,15 @@ extern int afs_open(struct inode *, struct file *); extern int afs_release(struct inode *, struct file *); /* + * flock.c + */ +extern void __exit afs_kill_lock_manager(void); +extern void afs_lock_work(struct work_struct *); +extern void afs_lock_may_be_available(struct afs_vnode *); +extern int afs_lock(struct file *, int, struct file_lock *); +extern int afs_flock(struct file *, int, struct file_lock *); + +/* * fsclient.c */ extern int afs_fs_fetch_file_status(struct afs_server *, struct key *, @@ -513,6 +530,15 @@ extern int afs_fs_get_volume_status(struct afs_server *, struct key *, struct afs_vnode *, struct afs_volume_status *, const struct afs_wait_mode *); +extern int afs_fs_set_lock(struct afs_server *, struct key *, + struct afs_vnode *, afs_lock_type_t, + const struct afs_wait_mode *); +extern int afs_fs_extend_lock(struct afs_server *, struct key *, + struct afs_vnode *, + const struct afs_wait_mode *); +extern int afs_fs_release_lock(struct afs_server *, struct key *, + struct afs_vnode *, + const struct afs_wait_mode *); /* * inode.c @@ -681,6 +707,10 @@ extern int afs_vnode_store_data(struct afs_writeback *, pgoff_t, pgoff_t, extern int afs_vnode_setattr(struct afs_vnode *, struct key *, struct iattr *); extern int afs_vnode_get_volume_status(struct afs_vnode *, struct key *, struct afs_volume_status *); +extern int afs_vnode_set_lock(struct afs_vnode *, struct key *, + afs_lock_type_t); +extern int afs_vnode_extend_lock(struct afs_vnode *, struct key *); +extern int afs_vnode_release_lock(struct afs_vnode *, struct key *); /* * volume.c |