| vnode.h (31561) | vnode.h (31727) |
|---|---|
| 1/* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 17 unchanged lines hidden (view full) --- 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)vnode.h 8.7 (Berkeley) 2/4/94 | 1/* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 17 unchanged lines hidden (view full) --- 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)vnode.h 8.7 (Berkeley) 2/4/94 |
| 34 * $Id: vnode.h,v 1.57 1997/11/22 08:35:43 bde Exp $ | 34 * $Id: vnode.h,v 1.58 1997/12/05 19:55:49 bde Exp $ |
| 35 */ 36 37#ifndef _SYS_VNODE_H_ 38#define _SYS_VNODE_H_ 39 40#include <sys/queue.h> | 35 */ 36 37#ifndef _SYS_VNODE_H_ 38#define _SYS_VNODE_H_ 39 40#include <sys/queue.h> |
| 41#include <sys/select.h> /* needed for struct selinfo in vnodes */ |
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| 41 42#include <machine/lock.h> 43 44/* 45 * The vnode is the focus of all file activity in UNIX. There is a 46 * unique vnode allocated for each active file, each current directory, 47 * each mounted-on file, text file, and the root. 48 */ --- 24 unchanged lines hidden (view full) --- 73struct namecache; 74 75/* 76 * Reading or writing any of these items requires holding the appropriate lock. 77 * v_freelist is locked by the global vnode_free_list simple lock. 78 * v_mntvnodes is locked by the global mntvnodes simple lock. 79 * v_flag, v_usecount, v_holdcount and v_writecount are 80 * locked by the v_interlock simple lock. | 42 43#include <machine/lock.h> 44 45/* 46 * The vnode is the focus of all file activity in UNIX. There is a 47 * unique vnode allocated for each active file, each current directory, 48 * each mounted-on file, text file, and the root. 49 */ --- 24 unchanged lines hidden (view full) --- 74struct namecache; 75 76/* 77 * Reading or writing any of these items requires holding the appropriate lock. 78 * v_freelist is locked by the global vnode_free_list simple lock. 79 * v_mntvnodes is locked by the global mntvnodes simple lock. 80 * v_flag, v_usecount, v_holdcount and v_writecount are 81 * locked by the v_interlock simple lock. |
| 82 * v_pollinfo is locked by the lock contained inside it. |
|
| 81 */ 82struct vnode { 83 u_long v_flag; /* vnode flags (see below) */ 84 int v_usecount; /* reference count of users */ 85 int v_writecount; /* reference count of writers */ 86 int v_holdcnt; /* page & buffer references */ 87 daddr_t v_lastr; /* last read (read-ahead) */ 88 u_long v_id; /* capability identifier */ --- 20 unchanged lines hidden (view full) --- 109 struct simplelock v_interlock; /* lock on usecount and flag */ 110 struct lock *v_vnlock; /* used for non-locking fs's */ 111 enum vtagtype v_tag; /* type of underlying data */ 112 void *v_data; /* private data for fs */ 113 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */ 114 TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */ 115 struct vnode *v_dd; /* .. vnode */ 116 u_long v_ddid; /* .. capability identifier */ | 83 */ 84struct vnode { 85 u_long v_flag; /* vnode flags (see below) */ 86 int v_usecount; /* reference count of users */ 87 int v_writecount; /* reference count of writers */ 88 int v_holdcnt; /* page & buffer references */ 89 daddr_t v_lastr; /* last read (read-ahead) */ 90 u_long v_id; /* capability identifier */ --- 20 unchanged lines hidden (view full) --- 111 struct simplelock v_interlock; /* lock on usecount and flag */ 112 struct lock *v_vnlock; /* used for non-locking fs's */ 113 enum vtagtype v_tag; /* type of underlying data */ 114 void *v_data; /* private data for fs */ 115 LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */ 116 TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */ 117 struct vnode *v_dd; /* .. vnode */ 118 u_long v_ddid; /* .. capability identifier */ |
| 119 struct { 120 struct simplelock vpi_lock; /* lock to protect below */ 121 struct selinfo vpi_selinfo; /* identity of poller(s) */ 122 short vpi_events; /* what they are looking for */ 123 short vpi_revents; /* what has happened */ 124 } v_pollinfo; |
|
| 117}; 118#define v_mountedhere v_un.vu_mountedhere 119#define v_socket v_un.vu_socket 120#define v_specinfo v_un.vu_specinfo 121#define v_fifoinfo v_un.vu_fifoinfo 122 | 125}; 126#define v_mountedhere v_un.vu_mountedhere 127#define v_socket v_un.vu_socket 128#define v_specinfo v_un.vu_specinfo 129#define v_fifoinfo v_un.vu_fifoinfo 130 |
| 131#define VN_POLLEVENT(vp, events) \ 132 do { \ 133 if ((vp)->v_pollinfo.vpi_events & (events)) \ 134 vn_pollevent((vp), (events)); \ 135 } while (0) 136 |
|
| 123/* 124 * Vnode flags. 125 */ 126#define VROOT 0x00001 /* root of its file system */ 127#define VTEXT 0x00002 /* vnode is a pure text prototype */ 128#define VSYSTEM 0x00004 /* vnode being used by kernel */ 129#define VISTTY 0x00008 /* vnode represents a tty */ 130#define VXLOCK 0x00100 /* vnode is locked to change underlying type */ --- 337 unchanged lines hidden (view full) --- 468 struct proc *p, int slpflag, int slptimeo)); 469void vprint __P((char *label, struct vnode *vp)); 470int vrecycle __P((struct vnode *vp, struct simplelock *inter_lkp, 471 struct proc *p)); 472int vn_close __P((struct vnode *vp, 473 int flags, struct ucred *cred, struct proc *p)); 474int vn_lock __P((struct vnode *vp, int flags, struct proc *p)); 475int vn_open __P((struct nameidata *ndp, int fmode, int cmode)); | 137/* 138 * Vnode flags. 139 */ 140#define VROOT 0x00001 /* root of its file system */ 141#define VTEXT 0x00002 /* vnode is a pure text prototype */ 142#define VSYSTEM 0x00004 /* vnode being used by kernel */ 143#define VISTTY 0x00008 /* vnode represents a tty */ 144#define VXLOCK 0x00100 /* vnode is locked to change underlying type */ --- 337 unchanged lines hidden (view full) --- 482 struct proc *p, int slpflag, int slptimeo)); 483void vprint __P((char *label, struct vnode *vp)); 484int vrecycle __P((struct vnode *vp, struct simplelock *inter_lkp, 485 struct proc *p)); 486int vn_close __P((struct vnode *vp, 487 int flags, struct ucred *cred, struct proc *p)); 488int vn_lock __P((struct vnode *vp, int flags, struct proc *p)); 489int vn_open __P((struct nameidata *ndp, int fmode, int cmode)); |
| 490void vn_pollevent __P((struct vnode *vp, int events)); 491void vn_pollgone __P((struct vnode *vp)); 492int vn_pollrecord __P((struct vnode *vp, struct proc *p, int events)); |
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| 476int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 477 int len, off_t offset, enum uio_seg segflg, int ioflg, 478 struct ucred *cred, int *aresid, struct proc *p)); 479int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p)); 480int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 481int vfs_object_create __P((struct vnode *vp, struct proc *p, 482 struct ucred *cred, int waslocked)); 483int vn_writechk __P((struct vnode *vp)); 484int vop_stdbwrite __P((struct vop_bwrite_args *ap)); 485int vop_stdislocked __P((struct vop_islocked_args *)); 486int vop_stdlock __P((struct vop_lock_args *)); 487int vop_stdunlock __P((struct vop_unlock_args *)); 488int vop_noislocked __P((struct vop_islocked_args *)); 489int vop_nolock __P((struct vop_lock_args *)); 490int vop_nopoll __P((struct vop_poll_args *)); 491int vop_nounlock __P((struct vop_unlock_args *)); 492int vop_stdpathconf __P((struct vop_pathconf_args *)); | 493int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base, 494 int len, off_t offset, enum uio_seg segflg, int ioflg, 495 struct ucred *cred, int *aresid, struct proc *p)); 496int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p)); 497int vfs_cache_lookup __P((struct vop_lookup_args *ap)); 498int vfs_object_create __P((struct vnode *vp, struct proc *p, 499 struct ucred *cred, int waslocked)); 500int vn_writechk __P((struct vnode *vp)); 501int vop_stdbwrite __P((struct vop_bwrite_args *ap)); 502int vop_stdislocked __P((struct vop_islocked_args *)); 503int vop_stdlock __P((struct vop_lock_args *)); 504int vop_stdunlock __P((struct vop_unlock_args *)); 505int vop_noislocked __P((struct vop_islocked_args *)); 506int vop_nolock __P((struct vop_lock_args *)); 507int vop_nopoll __P((struct vop_poll_args *)); 508int vop_nounlock __P((struct vop_unlock_args *)); 509int vop_stdpathconf __P((struct vop_pathconf_args *)); |
| 510int vop_stdpoll __P((struct vop_poll_args *)); |
|
| 493int vop_revoke __P((struct vop_revoke_args *)); 494int vop_sharedlock __P((struct vop_lock_args *)); 495int vop_eopnotsupp __P((struct vop_generic_args *ap)); 496int vop_ebadf __P((struct vop_generic_args *ap)); 497int vop_einval __P((struct vop_generic_args *ap)); 498int vop_enotty __P((struct vop_generic_args *ap)); 499int vop_defaultop __P((struct vop_generic_args *ap)); 500int vop_null __P((struct vop_generic_args *ap)); 501 502struct vnode * 503 checkalias __P((struct vnode *vp, dev_t nvp_rdev, struct mount *mp)); 504void vput __P((struct vnode *vp)); 505void vref __P((struct vnode *vp)); 506void vrele __P((struct vnode *vp)); 507 508extern vop_t **default_vnodeop_p; 509#endif /* KERNEL */ 510 511#endif /* !_SYS_VNODE_H_ */ | 511int vop_revoke __P((struct vop_revoke_args *)); 512int vop_sharedlock __P((struct vop_lock_args *)); 513int vop_eopnotsupp __P((struct vop_generic_args *ap)); 514int vop_ebadf __P((struct vop_generic_args *ap)); 515int vop_einval __P((struct vop_generic_args *ap)); 516int vop_enotty __P((struct vop_generic_args *ap)); 517int vop_defaultop __P((struct vop_generic_args *ap)); 518int vop_null __P((struct vop_generic_args *ap)); 519 520struct vnode * 521 checkalias __P((struct vnode *vp, dev_t nvp_rdev, struct mount *mp)); 522void vput __P((struct vnode *vp)); 523void vref __P((struct vnode *vp)); 524void vrele __P((struct vnode *vp)); 525 526extern vop_t **default_vnodeop_p; 527#endif /* KERNEL */ 528 529#endif /* !_SYS_VNODE_H_ */ |