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da7c5cc6 | 1 | /* |
6d0f0ece KM |
2 | * Copyright (c) 1982, 1989 The Regents of the University of California. |
3 | * All rights reserved. | |
da7c5cc6 | 4 | * |
af359dea C |
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. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
6d0f0ece | 20 | * |
af359dea C |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
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 | * @(#)inode.h 7.17 (Berkeley) 5/8/91 | |
da7c5cc6 | 34 | */ |
d0064d3a | 35 | |
be213d5e KM |
36 | #ifdef KERNEL |
37 | #include "../ufs/dinode.h" | |
38 | #else | |
39 | #include <ufs/dinode.h> | |
40 | #endif | |
41 | ||
d0064d3a | 42 | /* |
af359dea C |
43 | * The inode is used to describe each active (or recently active) |
44 | * file in the UFS filesystem. It is composed of two types of | |
45 | * information. The first part is the information that is needed | |
46 | * only while the file is active (such as the identity of the file | |
47 | * and linkage to speed its lookup). The second part is the | |
48 | * permannent meta-data associated with the file which is read | |
49 | * in from the permanent dinode from long term storage when the | |
50 | * file becomes active, and is put back when the file is no longer | |
51 | * being used. | |
d0064d3a | 52 | */ |
a59abf09 | 53 | struct inode { |
be213d5e KM |
54 | struct inode *i_chain[2]; /* hash chain, MUST be first */ |
55 | struct vnode *i_vnode; /* vnode associated with this inode */ | |
6d0f0ece | 56 | struct vnode *i_devvp; /* vnode for block I/O */ |
0997b03c | 57 | u_long i_flag; /* see below */ |
d0064d3a | 58 | dev_t i_dev; /* device where inode resides */ |
af359dea C |
59 | ino_t i_number; /* the identity of the inode */ |
60 | struct fs *i_fs; /* filesystem associated with this inode */ | |
61 | struct dquot *i_dquot[MAXQUOTAS]; /* pointer to dquot structures */ | |
62 | struct lockf *i_lockf; /* head of byte-level lock list */ | |
be213d5e | 63 | long i_diroff; /* offset in dir, where we found last entry */ |
6d0f0ece | 64 | off_t i_endoff; /* end of useful stuff in directory */ |
0997b03c KM |
65 | long i_spare0; |
66 | long i_spare1; | |
af359dea | 67 | struct dinode i_din; /* the on-disk dinode */ |
d0064d3a BJ |
68 | }; |
69 | ||
be213d5e KM |
70 | #define i_mode i_din.di_mode |
71 | #define i_nlink i_din.di_nlink | |
72 | #define i_uid i_din.di_uid | |
73 | #define i_gid i_din.di_gid | |
beeb3369 | 74 | #if BYTE_ORDER == LITTLE_ENDIAN || defined(tahoe) /* ugh! -- must be fixed */ |
be213d5e | 75 | #define i_size i_din.di_qsize.val[0] |
beeb3369 KM |
76 | #else /* BYTE_ORDER == BIG_ENDIAN */ |
77 | #define i_size i_din.di_qsize.val[1] | |
961945a8 | 78 | #endif |
be213d5e KM |
79 | #define i_db i_din.di_db |
80 | #define i_ib i_din.di_ib | |
81 | #define i_atime i_din.di_atime | |
82 | #define i_mtime i_din.di_mtime | |
83 | #define i_ctime i_din.di_ctime | |
84 | #define i_blocks i_din.di_blocks | |
85 | #define i_rdev i_din.di_db[0] | |
86 | #define i_flags i_din.di_flags | |
87 | #define i_gen i_din.di_gen | |
69bd12a8 RE |
88 | #define i_forw i_chain[0] |
89 | #define i_back i_chain[1] | |
ad30fb67 | 90 | |
d0064d3a | 91 | /* flags */ |
771f4649 KM |
92 | #define ILOCKED 0x0001 /* inode is locked */ |
93 | #define IWANT 0x0002 /* some process waiting on lock */ | |
94 | #define IRENAME 0x0004 /* inode is being renamed */ | |
95 | #define IUPD 0x0010 /* file has been modified */ | |
96 | #define IACC 0x0020 /* inode access time to be updated */ | |
97 | #define ICHG 0x0040 /* inode has been changed */ | |
98 | #define IMOD 0x0080 /* inode has been modified */ | |
99 | #define ISHLOCK 0x0100 /* file has shared lock */ | |
100 | #define IEXLOCK 0x0200 /* file has exclusive lock */ | |
101 | #define ILWAIT 0x0400 /* someone waiting on file lock */ | |
d0064d3a | 102 | |
6d0f0ece KM |
103 | #ifdef KERNEL |
104 | /* | |
105 | * Convert between inode pointers and vnode pointers | |
106 | */ | |
107 | #define VTOI(vp) ((struct inode *)(vp)->v_data) | |
be213d5e | 108 | #define ITOV(ip) ((ip)->i_vnode) |
6d0f0ece KM |
109 | |
110 | /* | |
111 | * Convert between vnode types and inode formats | |
112 | */ | |
113 | extern enum vtype iftovt_tab[]; | |
114 | extern int vttoif_tab[]; | |
45b72508 | 115 | #define IFTOVT(mode) (iftovt_tab[((mode) & IFMT) >> 12]) |
6d0f0ece KM |
116 | #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) |
117 | ||
118 | #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) | |
119 | ||
361968cf KM |
120 | u_long nextgennumber; /* next generation number to assign */ |
121 | ||
122 | extern ino_t dirpref(); | |
123 | ||
6d0f0ece KM |
124 | /* |
125 | * Lock and unlock inodes. | |
126 | */ | |
30fd732d | 127 | #ifdef notdef |
02dd5a44 BJ |
128 | #define ILOCK(ip) { \ |
129 | while ((ip)->i_flag & ILOCKED) { \ | |
130 | (ip)->i_flag |= IWANT; \ | |
6d0f0ece | 131 | (void) sleep((caddr_t)(ip), PINOD); \ |
02dd5a44 BJ |
132 | } \ |
133 | (ip)->i_flag |= ILOCKED; \ | |
134 | } | |
135 | ||
136 | #define IUNLOCK(ip) { \ | |
137 | (ip)->i_flag &= ~ILOCKED; \ | |
138 | if ((ip)->i_flag&IWANT) { \ | |
139 | (ip)->i_flag &= ~IWANT; \ | |
140 | wakeup((caddr_t)(ip)); \ | |
141 | } \ | |
142 | } | |
30fd732d KM |
143 | #else |
144 | #define ILOCK(ip) ilock(ip) | |
145 | #define IUNLOCK(ip) iunlock(ip) | |
146 | #endif | |
02dd5a44 BJ |
147 | |
148 | #define IUPDAT(ip, t1, t2, waitfor) { \ | |
232d0cb7 | 149 | if (ip->i_flag&(IUPD|IACC|ICHG|IMOD)) \ |
6d0f0ece | 150 | (void) iupdat(ip, t1, t2, waitfor); \ |
02dd5a44 | 151 | } |
232d0cb7 MK |
152 | |
153 | #define ITIMES(ip, t1, t2) { \ | |
154 | if ((ip)->i_flag&(IUPD|IACC|ICHG)) { \ | |
155 | (ip)->i_flag |= IMOD; \ | |
156 | if ((ip)->i_flag&IACC) \ | |
157 | (ip)->i_atime = (t1)->tv_sec; \ | |
158 | if ((ip)->i_flag&IUPD) \ | |
159 | (ip)->i_mtime = (t2)->tv_sec; \ | |
160 | if ((ip)->i_flag&ICHG) \ | |
161 | (ip)->i_ctime = time.tv_sec; \ | |
162 | (ip)->i_flag &= ~(IACC|IUPD|ICHG); \ | |
163 | } \ | |
164 | } | |
6d0f0ece KM |
165 | |
166 | /* | |
167 | * This overlays the fid sturcture (see mount.h) | |
168 | */ | |
169 | struct ufid { | |
be213d5e KM |
170 | u_short ufid_len; /* length of structure */ |
171 | u_short ufid_pad; /* force long alignment */ | |
172 | ino_t ufid_ino; /* file number (ino) */ | |
173 | long ufid_gen; /* generation number */ | |
6d0f0ece | 174 | }; |
af359dea C |
175 | |
176 | /* | |
177 | * Prototypes for UFS vnode operations | |
178 | */ | |
179 | int ufs_lookup __P((struct vnode *vp, struct nameidata *ndp, struct proc *p)); | |
180 | int ufs_create __P((struct nameidata *ndp, struct vattr *vap, struct proc *p)); | |
181 | int ufs_mknod __P((struct nameidata *ndp, struct vattr *vap, struct ucred *cred, | |
182 | struct proc *p)); | |
183 | int ufs_open __P((struct vnode *vp, int mode, struct ucred *cred, | |
184 | struct proc *p)); | |
185 | int ufs_close __P((struct vnode *vp, int fflag, struct ucred *cred, | |
186 | struct proc *p)); | |
187 | int ufs_access __P((struct vnode *vp, int mode, struct ucred *cred, | |
188 | struct proc *p)); | |
189 | int ufs_getattr __P((struct vnode *vp, struct vattr *vap, struct ucred *cred, | |
190 | struct proc *p)); | |
191 | int ufs_setattr __P((struct vnode *vp, struct vattr *vap, struct ucred *cred, | |
192 | struct proc *p)); | |
193 | int ufs_read __P((struct vnode *vp, struct uio *uio, int ioflag, | |
194 | struct ucred *cred)); | |
195 | int ufs_write __P((struct vnode *vp, struct uio *uio, int ioflag, | |
196 | struct ucred *cred)); | |
197 | int ufs_ioctl __P((struct vnode *vp, int command, caddr_t data, int fflag, | |
198 | struct ucred *cred, struct proc *p)); | |
199 | int ufs_select __P((struct vnode *vp, int which, int fflags, struct ucred *cred, | |
200 | struct proc *p)); | |
201 | int ufs_mmap __P((struct vnode *vp, int fflags, struct ucred *cred, | |
202 | struct proc *p)); | |
203 | int ufs_fsync __P((struct vnode *vp, int fflags, struct ucred *cred, | |
204 | int waitfor, struct proc *p)); | |
205 | int ufs_seek __P((struct vnode *vp, off_t oldoff, off_t newoff, | |
206 | struct ucred *cred)); | |
207 | int ufs_remove __P((struct nameidata *ndp, struct proc *p)); | |
208 | int ufs_link __P((struct vnode *vp, struct nameidata *ndp, struct proc *p)); | |
209 | int ufs_rename __P((struct nameidata *fndp, struct nameidata *tdnp, | |
210 | struct proc *p)); | |
211 | int ufs_mkdir __P((struct nameidata *ndp, struct vattr *vap, struct proc *p)); | |
212 | int ufs_rmdir __P((struct nameidata *ndp, struct proc *p)); | |
213 | int ufs_symlink __P((struct nameidata *ndp, struct vattr *vap, char *target, | |
214 | struct proc *p)); | |
215 | int ufs_readdir __P((struct vnode *vp, struct uio *uio, struct ucred *cred, | |
216 | int *eofflagp)); | |
217 | int ufs_readlink __P((struct vnode *vp, struct uio *uio, struct ucred *cred)); | |
218 | int ufs_abortop __P((struct nameidata *ndp)); | |
219 | int ufs_inactive __P((struct vnode *vp, struct proc *p)); | |
220 | int ufs_reclaim __P((struct vnode *vp)); | |
221 | int ufs_lock __P((struct vnode *vp)); | |
222 | int ufs_unlock __P((struct vnode *vp)); | |
223 | int ufs_bmap __P((struct vnode *vp, daddr_t bn, struct vnode **vpp, | |
224 | daddr_t *bnp)); | |
225 | int ufs_strategy __P((struct buf *bp)); | |
226 | int ufs_print __P((struct vnode *vp)); | |
227 | int ufs_islocked __P((struct vnode *vp)); | |
228 | int ufs_advlock __P((struct vnode *vp, caddr_t id, int op, struct flock *fl, | |
229 | int flags)); | |
230 | #endif /* KERNEL */ |