Annotation of prex-old/include/sys/vnode.h, Revision 1.1.1.1.2.1
1.1 nbrk 1: /*
2: * Copyright (c) 2005-2007, Kohsuke Ohtani
3: * 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
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the author nor the names of any co-contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: #ifndef _SYS_VNODE_H
31: #define _SYS_VNODE_H
32:
33: #include <sys/types.h>
34: #include <sys/stat.h>
35: #include <sys/file.h>
36: #include <sys/list.h>
37: #include <sys/dirent.h>
38: #include <sys/syslimits.h>
39:
40: struct vfsops;
41: struct vnops;
42: struct vnode;
43: struct file;
44:
45: /*
46: * Vnode types.
47: */
48: enum {
49: VNON, /* no type */
50: VREG, /* regular file */
51: VDIR, /* directory */
52: VBLK, /* block device */
53: VCHR, /* character device */
54: VLNK, /* symbolic link */
55: VSOCK, /* socks */
56: VFIFO /* FIFO */
57: };
58:
59: /*
60: * Reading or writing any of these items requires holding the
61: * appropriate lock.
62: */
63: struct vnode {
64: struct list v_link; /* link for hash list */
65: struct mount *v_mount; /* mounted vfs pointer */
66: struct vnops *v_op; /* vnode operations */
1.1.1.1.2.1! nbrk 67: int v_refcnt; /* reference count */
1.1 nbrk 68: int v_type; /* vnode type */
69: int v_flags; /* vnode flag */
70: mode_t v_mode; /* file mode */
71: size_t v_size; /* file size */
72: mutex_t v_lock; /* lock for this vnode */
73: int v_nrlocks; /* lock count (for debug) */
74: int v_blkno; /* block number */
75: char *v_path; /* pointer to path in fs */
76: void *v_data; /* private data for fs */
77: };
78: typedef struct vnode *vnode_t;
79:
80: /* flags for vnode */
81: #define VROOT 0x0001 /* root of its file system */
82:
83: /*
84: * Vnode attribute
85: */
86: struct vattr {
87: int va_type; /* vnode type */
88: mode_t va_mode; /* file access mode */
89: };
90:
91: /*
92: * Modes
93: */
94: #define VREAD 0x0004
95: #define VWRITE 0x0002
96: #define VEXEC 0x0001
97:
98: /*
99: * vnode operations
100: */
101: struct vnops {
1.1.1.1.2.1! nbrk 102: int (*vop_open) (vnode_t vp, int flags);
! 103: int (*vop_close) (vnode_t vp, file_t fp);
! 104: int (*vop_read) (vnode_t vp, file_t fp, void *buf, size_t size, size_t *result);
! 105: int (*vop_write) (vnode_t vp, file_t fp, void *buf, size_t size, size_t *result);
! 106: int (*vop_seek) (vnode_t vp, file_t fp, off_t oldoff, off_t newoff);
! 107: int (*vop_ioctl) (vnode_t vp, file_t fp, u_long cmd, void *arg);
! 108: int (*vop_fsync) (vnode_t vp, file_t fp);
! 109: int (*vop_readdir) (vnode_t vp, file_t fp, struct dirent *dirent);
! 110: int (*vop_lookup) (vnode_t dvp, char *name, vnode_t vp);
! 111: int (*vop_create) (vnode_t dvp, char *name, mode_t mode);
! 112: int (*vop_remove) (vnode_t dvp, vnode_t vp, char *name);
! 113: int (*vop_rename) (vnode_t dvp1, vnode_t vp1, char *name1, vnode_t dvp2, vnode_t vp2, char *name2);
! 114: int (*vop_mkdir) (vnode_t dvp, char *name, mode_t mode);
! 115: int (*vop_rmdir) (vnode_t dvp, vnode_t vp, char *name);
! 116: int (*vop_getattr) (vnode_t vp, struct vattr *vap);
! 117: int (*vop_setattr) (vnode_t vp, struct vattr *vap);
! 118: int (*vop_inactive) (vnode_t vp);
! 119: int (*vop_truncate) (vnode_t vp);
1.1 nbrk 120: };
121:
1.1.1.1.2.1! nbrk 122: typedef int (*vnop_open_t) (vnode_t, int);
1.1 nbrk 123: typedef int (*vnop_close_t) (vnode_t, file_t);
124: typedef int (*vnop_read_t) (vnode_t, file_t, void *, size_t, size_t *);
125: typedef int (*vnop_write_t) (vnode_t, file_t, void *, size_t, size_t *);
126: typedef int (*vnop_seek_t) (vnode_t, file_t, off_t, off_t);
1.1.1.1.2.1! nbrk 127: typedef int (*vnop_ioctl_t) (vnode_t, file_t, u_long, void *);
1.1 nbrk 128: typedef int (*vnop_fsync_t) (vnode_t, file_t);
129: typedef int (*vnop_readdir_t) (vnode_t, file_t, struct dirent *);
130: typedef int (*vnop_lookup_t) (vnode_t, char *, vnode_t);
131: typedef int (*vnop_create_t) (vnode_t, char *, mode_t);
132: typedef int (*vnop_remove_t) (vnode_t, vnode_t, char *);
133: typedef int (*vnop_rename_t) (vnode_t, vnode_t, char *, vnode_t, vnode_t, char *);
134: typedef int (*vnop_mkdir_t) (vnode_t, char *, mode_t);
135: typedef int (*vnop_rmdir_t) (vnode_t, vnode_t, char *);
136: typedef int (*vnop_getattr_t) (vnode_t, struct vattr *);
137: typedef int (*vnop_setattr_t) (vnode_t, struct vattr *);
138: typedef int (*vnop_inactive_t) (vnode_t);
139: typedef int (*vnop_truncate_t) (vnode_t);
140:
141: /*
142: * vnode interface
143: */
1.1.1.1.2.1! nbrk 144: #define VOP_OPEN(VP, F) ((VP)->v_op->vop_open)(VP, F)
! 145: #define VOP_CLOSE(VP, FP) ((VP)->v_op->vop_close)(VP, FP)
! 146: #define VOP_READ(VP, FP, B, S, C) ((VP)->v_op->vop_read)(VP, FP, B, S, C)
! 147: #define VOP_WRITE(VP, FP, B, S, C) ((VP)->v_op->vop_write)(VP, FP, B, S, C)
! 148: #define VOP_SEEK(VP, FP, OLD, NEW) ((VP)->v_op->vop_seek)(VP, FP, OLD, NEW)
! 149: #define VOP_IOCTL(VP, FP, C, A) ((VP)->v_op->vop_ioctl)(VP, FP, C, A)
! 150: #define VOP_FSYNC(VP, FP) ((VP)->v_op->vop_fsync)(VP, FP)
! 151: #define VOP_READDIR(VP, FP, DIR) ((VP)->v_op->vop_readdir)(VP, FP, DIR)
! 152: #define VOP_LOOKUP(DVP, N, VP) ((DVP)->v_op->vop_lookup)(DVP, N, VP)
! 153: #define VOP_CREATE(DVP, N, M) ((DVP)->v_op->vop_create)(DVP, N, M)
! 154: #define VOP_REMOVE(DVP, VP, N) ((DVP)->v_op->vop_remove)(DVP, VP, N)
1.1 nbrk 155: #define VOP_RENAME(DVP1, VP1, N1, DVP2, VP2, N2) \
1.1.1.1.2.1! nbrk 156: ((DVP1)->v_op->vop_rename)(DVP1, VP1, N1, DVP2, VP2, N2)
! 157: #define VOP_MKDIR(DVP, N, M) ((DVP)->v_op->vop_mkdir)(DVP, N, M)
! 158: #define VOP_RMDIR(DVP, VP, N) ((DVP)->v_op->vop_rmdir)(DVP, VP, N)
! 159: #define VOP_GETATTR(VP, VAP) ((VP)->v_op->vop_getattr)(VP, VAP)
! 160: #define VOP_SETATTR(VP, VAP) ((VP)->v_op->vop_setattr)(VP, VAP)
! 161: #define VOP_INACTIVE(VP) ((VP)->v_op->vop_inactive)(VP)
! 162: #define VOP_TRUNCATE(VP) ((VP)->v_op->vop_truncate)(VP)
1.1 nbrk 163:
164: __BEGIN_DECLS
165: int vop_nullop(void);
166: int vop_einval(void);
1.1.1.1.2.1! nbrk 167:
! 168: vnode_t vn_lookup(struct mount *mp, char *path);
! 169: void vn_lock(vnode_t vp);
! 170: void vn_unlock(vnode_t vp);
! 171: int vn_stat(vnode_t vp, struct stat *st);
! 172: vnode_t vget(struct mount *mp, char *path);
! 173: void vput(vnode_t vp);
! 174: void vgone(vnode_t vp);
! 175: void vref(vnode_t vp);
! 176: void vrele(vnode_t vp);
! 177: int vcount(vnode_t vp);
! 178: void vflush(struct mount *mp);
1.1 nbrk 179: __END_DECLS
180:
181: #endif /* !_SYS_VNODE_H */
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