/*
- * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * Copyright (c) 2000-2006 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
#include <linux/vfs.h>
#include "xfs_fs.h"
+struct bhv_vfs;
+struct bhv_vnode;
+
struct fid;
-struct vfs;
struct cred;
-struct vnode;
-struct kstatfs;
struct seq_file;
struct super_block;
struct xfs_mount_args;
-typedef struct kstatfs xfs_statfs_t;
+typedef struct kstatfs bhv_statvfs_t;
-typedef struct vfs_sync_work {
+typedef struct bhv_vfs_sync_work {
struct list_head w_list;
- struct vfs *w_vfs;
+ struct bhv_vfs *w_vfs;
void *w_data; /* syncer routine argument */
- void (*w_syncer)(struct vfs *, void *);
-} vfs_sync_work_t;
+ void (*w_syncer)(struct bhv_vfs *, void *);
+} bhv_vfs_sync_work_t;
-typedef struct vfs {
+typedef struct bhv_vfs {
u_int vfs_flag; /* flags */
xfs_fsid_t vfs_fsid; /* file system ID */
xfs_fsid_t *vfs_altfsid; /* An ID fixed for life of FS */
bhv_head_t vfs_bh; /* head of vfs behavior chain */
struct super_block *vfs_super; /* generic superblock pointer */
struct task_struct *vfs_sync_task; /* generalised sync thread */
- vfs_sync_work_t vfs_sync_work; /* work item for VFS_SYNC */
+ bhv_vfs_sync_work_t vfs_sync_work; /* work item for VFS_SYNC */
struct list_head vfs_sync_list; /* sync thread work item list */
spinlock_t vfs_sync_lock; /* work item list lock */
- int vfs_sync_seq; /* sync thread generation no. */
+ int vfs_sync_seq; /* sync thread generation no. */
wait_queue_head_t vfs_wait_single_sync_task;
-} vfs_t;
-
-#define vfs_fbhv vfs_bh.bh_first /* 1st on vfs behavior chain */
+} bhv_vfs_t;
-#define bhvtovfs(bdp) ( (struct vfs *)BHV_VOBJ(bdp) )
-#define bhvtovfsops(bdp) ( (struct vfsops *)BHV_OPS(bdp) )
+#define bhvtovfs(bdp) ( (struct bhv_vfs *)BHV_VOBJ(bdp) )
+#define bhvtovfsops(bdp) ( (struct bhv_vfsops *)BHV_OPS(bdp) )
#define VFS_BHVHEAD(vfs) ( &(vfs)->vfs_bh )
#define VFS_REMOVEBHV(vfs, bdp) ( bhv_remove(VFS_BHVHEAD(vfs), bdp) )
VFS_BHV_QM, /* quota manager */
VFS_BHV_IO, /* IO path */
VFS_BHV_END /* housekeeping end-of-range */
-} vfs_bhv_t;
+} bhv_vfs_type_t;
#define VFS_POSITION_XFS (BHV_POSITION_BASE)
#define VFS_POSITION_DM (VFS_POSITION_BASE+10)
#define VFS_RDONLY 0x0001 /* read-only vfs */
#define VFS_GRPID 0x0002 /* group-ID assigned from directory */
#define VFS_DMI 0x0004 /* filesystem has the DMI enabled */
-#define VFS_32BITINODES 0x0008 /* do not use inums above 32 bits */
-#define VFS_END 0x0008 /* max flag */
+#define VFS_UMOUNT 0x0008 /* unmount in progress */
+#define VFS_32BITINODES 0x0010 /* do not use inums above 32 bits */
+#define VFS_END 0x0010 /* max flag */
#define SYNC_ATTR 0x0001 /* sync attributes */
#define SYNC_CLOSE 0x0002 /* close file system down */
#define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */
#define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */
#define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */
-#define SYNC_QUIESCE 0x0100 /* quiesce filesystem for a snapshot */
+#define SYNC_QUIESCE 0x0100 /* quiesce fileystem for a snapshot */
+
+#define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
+#define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
+#define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
+#define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
+#define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */
+#define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */
typedef int (*vfs_mount_t)(bhv_desc_t *,
struct xfs_mount_args *, struct cred *);
typedef int (*vfs_unmount_t)(bhv_desc_t *, int, struct cred *);
typedef int (*vfs_mntupdate_t)(bhv_desc_t *, int *,
struct xfs_mount_args *);
-typedef int (*vfs_root_t)(bhv_desc_t *, struct vnode **);
-typedef int (*vfs_statvfs_t)(bhv_desc_t *, xfs_statfs_t *, struct vnode *);
+typedef int (*vfs_root_t)(bhv_desc_t *, struct bhv_vnode **);
+typedef int (*vfs_statvfs_t)(bhv_desc_t *, bhv_statvfs_t *,
+ struct bhv_vnode *);
typedef int (*vfs_sync_t)(bhv_desc_t *, int, struct cred *);
-typedef int (*vfs_vget_t)(bhv_desc_t *, struct vnode **, struct fid *);
+typedef int (*vfs_vget_t)(bhv_desc_t *, struct bhv_vnode **, struct fid *);
typedef int (*vfs_dmapiops_t)(bhv_desc_t *, caddr_t);
typedef int (*vfs_quotactl_t)(bhv_desc_t *, int, int, caddr_t);
typedef void (*vfs_init_vnode_t)(bhv_desc_t *,
- struct vnode *, bhv_desc_t *, int);
+ struct bhv_vnode *, bhv_desc_t *, int);
typedef void (*vfs_force_shutdown_t)(bhv_desc_t *, int, char *, int);
typedef void (*vfs_freeze_t)(bhv_desc_t *);
-typedef struct vfsops {
+typedef struct bhv_vfsops {
bhv_position_t vf_position; /* behavior chain position */
vfs_mount_t vfs_mount; /* mount file system */
vfs_parseargs_t vfs_parseargs; /* parse mount options */
vfs_init_vnode_t vfs_init_vnode; /* initialize a new vnode */
vfs_force_shutdown_t vfs_force_shutdown; /* crash and burn */
vfs_freeze_t vfs_freeze; /* freeze fs for snapshot */
-} vfsops_t;
+} bhv_vfsops_t;
/*
- * VFS's. Operates on vfs structure pointers (starts at bhv head).
+ * Virtual filesystem operations, operating from head bhv.
*/
-#define VHEAD(v) ((v)->vfs_fbhv)
-#define VFS_MOUNT(v, ma,cr, rv) ((rv) = vfs_mount(VHEAD(v), ma,cr))
-#define VFS_PARSEARGS(v, o,ma,f, rv) ((rv) = vfs_parseargs(VHEAD(v), o,ma,f))
-#define VFS_SHOWARGS(v, m, rv) ((rv) = vfs_showargs(VHEAD(v), m))
-#define VFS_UNMOUNT(v, f, cr, rv) ((rv) = vfs_unmount(VHEAD(v), f,cr))
-#define VFS_MNTUPDATE(v, fl, args, rv) ((rv) = vfs_mntupdate(VHEAD(v), fl, args))
-#define VFS_ROOT(v, vpp, rv) ((rv) = vfs_root(VHEAD(v), vpp))
-#define VFS_STATVFS(v, sp,vp, rv) ((rv) = vfs_statvfs(VHEAD(v), sp,vp))
-#define VFS_SYNC(v, flag,cr, rv) ((rv) = vfs_sync(VHEAD(v), flag,cr))
-#define VFS_VGET(v, vpp,fidp, rv) ((rv) = vfs_vget(VHEAD(v), vpp,fidp))
-#define VFS_DMAPIOPS(v, p, rv) ((rv) = vfs_dmapiops(VHEAD(v), p))
-#define VFS_QUOTACTL(v, c,id,p, rv) ((rv) = vfs_quotactl(VHEAD(v), c,id,p))
-#define VFS_INIT_VNODE(v, vp,b,ul) ( vfs_init_vnode(VHEAD(v), vp,b,ul) )
-#define VFS_FORCE_SHUTDOWN(v, fl,f,l) ( vfs_force_shutdown(VHEAD(v), fl,f,l) )
-#define VFS_FREEZE(v) ( vfs_freeze(VHEAD(v)) )
+#define VFSHEAD(v) ((v)->vfs_bh.bh_first)
+#define bhv_vfs_mount(v, ma,cr) vfs_mount(VFSHEAD(v), ma,cr)
+#define bhv_vfs_parseargs(v, o,ma,f) vfs_parseargs(VFSHEAD(v), o,ma,f)
+#define bhv_vfs_showargs(v, m) vfs_showargs(VFSHEAD(v), m)
+#define bhv_vfs_unmount(v, f,cr) vfs_unmount(VFSHEAD(v), f,cr)
+#define bhv_vfs_mntupdate(v, fl,args) vfs_mntupdate(VFSHEAD(v), fl,args)
+#define bhv_vfs_root(v, vpp) vfs_root(VFSHEAD(v), vpp)
+#define bhv_vfs_statvfs(v, sp,vp) vfs_statvfs(VFSHEAD(v), sp,vp)
+#define bhv_vfs_sync(v, flag,cr) vfs_sync(VFSHEAD(v), flag,cr)
+#define bhv_vfs_vget(v, vpp,fidp) vfs_vget(VFSHEAD(v), vpp,fidp)
+#define bhv_vfs_dmapiops(v, p) vfs_dmapiops(VFSHEAD(v), p)
+#define bhv_vfs_quotactl(v, c,id,p) vfs_quotactl(VFSHEAD(v), c,id,p)
+#define bhv_vfs_init_vnode(v, vp,b,ul) vfs_init_vnode(VFSHEAD(v), vp,b,ul)
+#define bhv_vfs_force_shutdown(v,u,f,l) vfs_force_shutdown(VFSHEAD(v), u,f,l)
+#define bhv_vfs_freeze(v) vfs_freeze(VFSHEAD(v))
/*
- * PVFS's. Operates on behavior descriptor pointers.
+ * Virtual filesystem operations, operating from next bhv.
*/
-#define PVFS_MOUNT(b, ma,cr, rv) ((rv) = vfs_mount(b, ma,cr))
-#define PVFS_PARSEARGS(b, o,ma,f, rv) ((rv) = vfs_parseargs(b, o,ma,f))
-#define PVFS_SHOWARGS(b, m, rv) ((rv) = vfs_showargs(b, m))
-#define PVFS_UNMOUNT(b, f,cr, rv) ((rv) = vfs_unmount(b, f,cr))
-#define PVFS_MNTUPDATE(b, fl, args, rv) ((rv) = vfs_mntupdate(b, fl, args))
-#define PVFS_ROOT(b, vpp, rv) ((rv) = vfs_root(b, vpp))
-#define PVFS_STATVFS(b, sp,vp, rv) ((rv) = vfs_statvfs(b, sp,vp))
-#define PVFS_SYNC(b, flag,cr, rv) ((rv) = vfs_sync(b, flag,cr))
-#define PVFS_VGET(b, vpp,fidp, rv) ((rv) = vfs_vget(b, vpp,fidp))
-#define PVFS_DMAPIOPS(b, p, rv) ((rv) = vfs_dmapiops(b, p))
-#define PVFS_QUOTACTL(b, c,id,p, rv) ((rv) = vfs_quotactl(b, c,id,p))
-#define PVFS_INIT_VNODE(b, vp,b2,ul) ( vfs_init_vnode(b, vp,b2,ul) )
-#define PVFS_FORCE_SHUTDOWN(b, fl,f,l) ( vfs_force_shutdown(b, fl,f,l) )
-#define PVFS_FREEZE(b) ( vfs_freeze(b) )
+#define bhv_next_vfs_mount(b, ma,cr) vfs_mount(b, ma,cr)
+#define bhv_next_vfs_parseargs(b, o,ma,f) vfs_parseargs(b, o,ma,f)
+#define bhv_next_vfs_showargs(b, m) vfs_showargs(b, m)
+#define bhv_next_vfs_unmount(b, f,cr) vfs_unmount(b, f,cr)
+#define bhv_next_vfs_mntupdate(b, fl,args) vfs_mntupdate(b, fl, args)
+#define bhv_next_vfs_root(b, vpp) vfs_root(b, vpp)
+#define bhv_next_vfs_statvfs(b, sp,vp) vfs_statvfs(b, sp,vp)
+#define bhv_next_vfs_sync(b, flag,cr) vfs_sync(b, flag,cr)
+#define bhv_next_vfs_vget(b, vpp,fidp) vfs_vget(b, vpp,fidp)
+#define bhv_next_vfs_dmapiops(b, p) vfs_dmapiops(b, p)
+#define bhv_next_vfs_quotactl(b, c,id,p) vfs_quotactl(b, c,id,p)
+#define bhv_next_vfs_init_vnode(b, vp,b2,ul) vfs_init_vnode(b, vp,b2,ul)
+#define bhv_next_force_shutdown(b, fl,f,l) vfs_force_shutdown(b, fl,f,l)
+#define bhv_next_vfs_freeze(b) vfs_freeze(b)
extern int vfs_mount(bhv_desc_t *, struct xfs_mount_args *, struct cred *);
extern int vfs_parseargs(bhv_desc_t *, char *, struct xfs_mount_args *, int);
extern int vfs_showargs(bhv_desc_t *, struct seq_file *);
extern int vfs_unmount(bhv_desc_t *, int, struct cred *);
extern int vfs_mntupdate(bhv_desc_t *, int *, struct xfs_mount_args *);
-extern int vfs_root(bhv_desc_t *, struct vnode **);
-extern int vfs_statvfs(bhv_desc_t *, xfs_statfs_t *, struct vnode *);
+extern int vfs_root(bhv_desc_t *, struct bhv_vnode **);
+extern int vfs_statvfs(bhv_desc_t *, bhv_statvfs_t *, struct bhv_vnode *);
extern int vfs_sync(bhv_desc_t *, int, struct cred *);
-extern int vfs_vget(bhv_desc_t *, struct vnode **, struct fid *);
+extern int vfs_vget(bhv_desc_t *, struct bhv_vnode **, struct fid *);
extern int vfs_dmapiops(bhv_desc_t *, caddr_t);
extern int vfs_quotactl(bhv_desc_t *, int, int, caddr_t);
-extern void vfs_init_vnode(bhv_desc_t *, struct vnode *, bhv_desc_t *, int);
+extern void vfs_init_vnode(bhv_desc_t *, struct bhv_vnode *, bhv_desc_t *, int);
extern void vfs_force_shutdown(bhv_desc_t *, int, char *, int);
extern void vfs_freeze(bhv_desc_t *);
-typedef struct bhv_vfsops {
- struct vfsops bhv_common;
+#define vfs_test_for_freeze(vfs) ((vfs)->vfs_super->s_frozen)
+#define vfs_wait_for_freeze(vfs,l) vfs_check_frozen((vfs)->vfs_super, (l))
+
+typedef struct bhv_module_vfsops {
+ struct bhv_vfsops bhv_common;
void * bhv_custom;
-} bhv_vfsops_t;
+} bhv_module_vfsops_t;
-#define vfs_bhv_lookup(v, id) ( bhv_lookup_range(&(v)->vfs_bh, (id), (id)) )
-#define vfs_bhv_custom(b) ( ((bhv_vfsops_t *)BHV_OPS(b))->bhv_custom )
-#define vfs_bhv_set_custom(b,o) ( (b)->bhv_custom = (void *)(o))
-#define vfs_bhv_clr_custom(b) ( (b)->bhv_custom = NULL )
+#define vfs_bhv_lookup(v, id) (bhv_lookup_range(&(v)->vfs_bh, (id), (id)))
+#define vfs_bhv_custom(b) (((bhv_module_vfsops_t*)BHV_OPS(b))->bhv_custom)
+#define vfs_bhv_set_custom(b,o) ((b)->bhv_custom = (void *)(o))
+#define vfs_bhv_clr_custom(b) ((b)->bhv_custom = NULL)
-extern vfs_t *vfs_allocate(struct super_block *);
-extern vfs_t *vfs_from_sb(struct super_block *);
-extern void vfs_deallocate(vfs_t *);
-extern void vfs_insertops(vfs_t *, bhv_vfsops_t *);
-extern void vfs_insertbhv(vfs_t *, bhv_desc_t *, vfsops_t *, void *);
+extern bhv_vfs_t *vfs_allocate(struct super_block *);
+extern bhv_vfs_t *vfs_from_sb(struct super_block *);
+extern void vfs_deallocate(bhv_vfs_t *);
+extern void vfs_insertbhv(bhv_vfs_t *, bhv_desc_t *, bhv_vfsops_t *, void *);
-extern void bhv_insert_all_vfsops(struct vfs *);
-extern void bhv_remove_all_vfsops(struct vfs *, int);
-extern void bhv_remove_vfsops(struct vfs *, int);
+extern void vfs_insertops(bhv_vfs_t *, bhv_module_vfsops_t *);
-#define fs_frozen(vfsp) ((vfsp)->vfs_super->s_frozen)
-#define fs_check_frozen(vfsp, level) \
- vfs_check_frozen(vfsp->vfs_super, level);
+extern void bhv_insert_all_vfsops(struct bhv_vfs *);
+extern void bhv_remove_all_vfsops(struct bhv_vfs *, int);
+extern void bhv_remove_vfsops(struct bhv_vfs *, int);
#endif /* __XFS_VFS_H__ */
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