1 /* 2 * Copyright (c) 2010 Kip Macy All rights reserved. 3 * Copyright (C) 2017 THL A29 Limited, a Tencent company. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, this 10 * list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 19 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 24 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 #ifndef _FSTACK_SYS_VNODE_H_ 29 #define _FSTACK_SYS_VNODE_H_ 30 31 #include <sys/uio.h> 32 #include <sys/namei.h> 33 34 /* 35 * Vnode types. VNON means no type. 36 */ 37 enum vtype { 38 VNON, VREG, VDIR, VBLK, VCHR, 39 VLNK, VSOCK, VFIFO, VBAD, VMARKER 40 }; 41 42 struct nameidata; 43 struct stat; 44 struct nstat; 45 struct vnode { 46 enum vtype v_type; 47 struct mount *v_mount; /* u ptr to vfs we are in */ 48 u_long v_vflag; /* v vnode flags */ 49 int v_fd; /* file descriptor */ 50 }; 51 52 #define VOP_ADVLOCK(a, b, c, d, e) (0) 53 #define VOP_UNLOCK(a, b) 54 static __inline int 55 vn_lock(struct vnode *vp, int flags) 56 { 57 return (0); 58 } 59 60 static __inline int 61 vrefcnt(struct vnode *vp) 62 { 63 return (0); 64 } 65 66 #define VREF(vp) vref(vp) 67 static __inline void 68 vref(struct vnode *vp) 69 { 70 71 } 72 73 static __inline void 74 vrele(struct vnode *vp) 75 { 76 77 } 78 79 extern struct vnode *rootvnode; 80 /* 0 or POSIX version of AIO i'face */ 81 extern int async_io_version; 82 83 static __inline int 84 vn_fullpath(struct thread *td, struct vnode *vp, 85 char **retbuf, char **freebuf) 86 { 87 return (0); 88 } 89 90 static __inline void 91 cvtnstat(struct stat *sb, struct nstat *nsb) 92 { 93 94 } 95 96 struct vattr { 97 enum vtype va_type;/* vnode type (for create) */ 98 u_short va_mode; /* files access mode and type */ 99 dev_t va_fsid; /* filesystem id */ 100 struct timespec va_mtime; 101 dev_t va_rdev; /* device the special file represents */ 102 u_quad_t va_size; /* file size in bytes */ 103 long va_fileid; /* file id */ 104 }; 105 106 /* underlying node already locked */ 107 #define IO_NODELOCKED 0x0008 108 109 #define VNOVAL (-1) 110 111 /* 112 * Convert between vnode types and inode formats (since POSIX.1 113 * defines mode word of stat structure in terms of inode formats). 114 */ 115 extern enum vtype iftovt_tab[]; 116 extern int vttoif_tab[]; 117 #define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12]) 118 #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) 119 #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) 120 121 #define VV_PROCDEP 0x0100 /* vnode is process dependent */ 122 123 static __inline int 124 VOP_PATHCONF(struct vnode *vp, int name, register_t *retval) 125 { 126 return (0); 127 } 128 129 static __inline int 130 VOP_GETATTR(struct vnode *vp, struct vattr *vap, struct ucred *cred) 131 { 132 bzero(vap, sizeof(struct vattr)); 133 return (0); 134 } 135 136 int vn_open(struct nameidata *ndp, int *flagp, int cmode, struct file *fp); 137 int vn_close(struct vnode *vp, int flags, struct ucred *file_cred, 138 struct thread *td); 139 140 int vn_rdwr(enum uio_rw rw, struct vnode *vp, void *base, 141 int len, off_t offset, enum uio_seg segflg, int ioflg, 142 struct ucred *active_cred, struct ucred *file_cred, ssize_t *aresid, 143 struct thread *td); 144 145 146 #endif /* _FSTACK_SYS_VNODE_H_ */ 147