| union.h (21673) | union.h (22521) |
|---|---|
| 1/* 2 * Copyright (c) 1994 The Regents of the University of California. 3 * Copyright (c) 1994 Jan-Simon Pendry. 4 * All rights reserved. 5 * 6 * This code is derived from software donated to Berkeley by 7 * Jan-Simon Pendry. 8 * --- 20 unchanged lines hidden (view full) --- 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * | 1/* 2 * Copyright (c) 1994 The Regents of the University of California. 3 * Copyright (c) 1994 Jan-Simon Pendry. 4 * All rights reserved. 5 * 6 * This code is derived from software donated to Berkeley by 7 * Jan-Simon Pendry. 8 * --- 20 unchanged lines hidden (view full) --- 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * |
| 37 * @(#)union.h 8.2 (Berkeley) 2/17/94 38 * $FreeBSD: head/sys/fs/unionfs/union.h 21673 1997-01-14 07:20:47Z jkh $ | 37 * @(#)union.h 8.9 (Berkeley) 12/10/94 38 * $FreeBSD: head/sys/fs/unionfs/union.h 22521 1997-02-10 02:22:35Z dyson $ |
| 39 */ 40 41struct union_args { 42 char *target; /* Target of loopback */ 43 int mntflags; /* Options on the mount */ 44}; 45 46#define UNMNT_ABOVE 0x0001 /* Target appears below mount point */ --- 23 unchanged lines hidden (view full) --- 70 * A cache of vnode references 71 */ 72struct union_node { 73 LIST_ENTRY(union_node) un_cache; /* Hash chain */ 74 struct vnode *un_vnode; /* Back pointer */ 75 struct vnode *un_uppervp; /* overlaying object */ 76 struct vnode *un_lowervp; /* underlying object */ 77 struct vnode *un_dirvp; /* Parent dir of uppervp */ | 39 */ 40 41struct union_args { 42 char *target; /* Target of loopback */ 43 int mntflags; /* Options on the mount */ 44}; 45 46#define UNMNT_ABOVE 0x0001 /* Target appears below mount point */ --- 23 unchanged lines hidden (view full) --- 70 * A cache of vnode references 71 */ 72struct union_node { 73 LIST_ENTRY(union_node) un_cache; /* Hash chain */ 74 struct vnode *un_vnode; /* Back pointer */ 75 struct vnode *un_uppervp; /* overlaying object */ 76 struct vnode *un_lowervp; /* underlying object */ 77 struct vnode *un_dirvp; /* Parent dir of uppervp */ |
| 78 struct vnode *un_pvp; /* Parent vnode */ |
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| 78 char *un_path; /* saved component name */ 79 int un_hash; /* saved un_path hash value */ 80 int un_openl; /* # of opens on lowervp */ | 79 char *un_path; /* saved component name */ 80 int un_hash; /* saved un_path hash value */ 81 int un_openl; /* # of opens on lowervp */ |
| 81 int un_flags; | 82 unsigned int un_flags; 83 struct vnode **un_dircache; /* cached union stack */ 84 off_t un_uppersz; /* size of upper object */ 85 off_t un_lowersz; /* size of lower object */ |
| 82#ifdef DIAGNOSTIC 83 pid_t un_pid; 84#endif 85}; 86 87#define UN_WANT 0x01 88#define UN_LOCKED 0x02 89#define UN_ULOCK 0x04 /* Upper node is locked */ 90#define UN_KLOCK 0x08 /* Keep upper node locked on vput */ | 86#ifdef DIAGNOSTIC 87 pid_t un_pid; 88#endif 89}; 90 91#define UN_WANT 0x01 92#define UN_LOCKED 0x02 93#define UN_ULOCK 0x04 /* Upper node is locked */ 94#define UN_KLOCK 0x08 /* Keep upper node locked on vput */ |
| 95#define UN_CACHED 0x10 /* In union cache */ |
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| 91 92extern int union_allocvp __P((struct vnode **, struct mount *, 93 struct vnode *, struct vnode *, 94 struct componentname *, struct vnode *, | 96 97extern int union_allocvp __P((struct vnode **, struct mount *, 98 struct vnode *, struct vnode *, 99 struct componentname *, struct vnode *, |
| 95 struct vnode *)); | 100 struct vnode *, int)); |
| 96extern int union_freevp __P((struct vnode *)); | 101extern int union_freevp __P((struct vnode *)); |
| 97extern int union_copyfile __P((struct proc *, struct ucred *, 98 struct vnode *, struct vnode *)); | 102extern int union_copyfile __P((struct vnode *, struct vnode *, 103 struct ucred *, struct proc *)); 104extern int union_copyup __P((struct union_node *, int, struct ucred *, 105 struct proc *)); 106extern int union_dowhiteout __P((struct union_node *, struct ucred *, 107 struct proc *)); |
| 99extern int union_mkshadow __P((struct union_mount *, struct vnode *, 100 struct componentname *, struct vnode **)); | 108extern int union_mkshadow __P((struct union_mount *, struct vnode *, 109 struct componentname *, struct vnode **)); |
| 110extern int union_mkwhiteout __P((struct union_mount *, struct vnode *, 111 struct componentname *, char *)); |
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| 101extern int union_vn_create __P((struct vnode **, struct union_node *, 102 struct proc *)); 103extern int union_vn_close __P((struct vnode *, int, struct ucred *, 104 struct proc *)); 105extern int union_cn_close __P((struct vnode *, int, struct ucred *, 106 struct proc *)); 107extern void union_removed_upper __P((struct union_node *un)); 108extern struct vnode *union_lowervp __P((struct vnode *)); 109extern void union_newlower __P((struct union_node *, struct vnode *)); 110extern void union_newupper __P((struct union_node *, struct vnode *)); | 112extern int union_vn_create __P((struct vnode **, struct union_node *, 113 struct proc *)); 114extern int union_vn_close __P((struct vnode *, int, struct ucred *, 115 struct proc *)); 116extern int union_cn_close __P((struct vnode *, int, struct ucred *, 117 struct proc *)); 118extern void union_removed_upper __P((struct union_node *un)); 119extern struct vnode *union_lowervp __P((struct vnode *)); 120extern void union_newlower __P((struct union_node *, struct vnode *)); 121extern void union_newupper __P((struct union_node *, struct vnode *)); |
| 122extern void union_newsize __P((struct vnode *, off_t, off_t)); |
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| 111 112#define MOUNTTOUNIONMOUNT(mp) ((struct union_mount *)((mp)->mnt_data)) 113#define VTOUNION(vp) ((struct union_node *)(vp)->v_data) 114#define UNIONTOV(un) ((un)->un_vnode) 115#define LOWERVP(vp) (VTOUNION(vp)->un_lowervp) 116#define UPPERVP(vp) (VTOUNION(vp)->un_uppervp) 117#define OTHERVP(vp) (UPPERVP(vp) ? UPPERVP(vp) : LOWERVP(vp)) 118 119extern vop_t **union_vnodeop_p; 120extern struct vfsops union_vfsops; 121#endif /* KERNEL */ | 123 124#define MOUNTTOUNIONMOUNT(mp) ((struct union_mount *)((mp)->mnt_data)) 125#define VTOUNION(vp) ((struct union_node *)(vp)->v_data) 126#define UNIONTOV(un) ((un)->un_vnode) 127#define LOWERVP(vp) (VTOUNION(vp)->un_lowervp) 128#define UPPERVP(vp) (VTOUNION(vp)->un_uppervp) 129#define OTHERVP(vp) (UPPERVP(vp) ? UPPERVP(vp) : LOWERVP(vp)) 130 131extern vop_t **union_vnodeop_p; 132extern struct vfsops union_vfsops; 133#endif /* KERNEL */ |