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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 | * |
6d0f0ece KM |
5 | * Redistribution and use in source and binary forms are permitted |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
16 | * | |
30fd732d | 17 | * @(#)inode.h 7.8 (Berkeley) %G% |
da7c5cc6 | 18 | */ |
d0064d3a | 19 | |
be213d5e KM |
20 | #ifdef KERNEL |
21 | #include "../ufs/dinode.h" | |
22 | #else | |
23 | #include <ufs/dinode.h> | |
24 | #endif | |
25 | ||
d0064d3a | 26 | /* |
a59abf09 BJ |
27 | * The I node is the focus of all file activity in UNIX. |
28 | * There is a unique inode allocated for each active file, | |
29 | * each current directory, each mounted-on file, text file, and the root. | |
30 | * An inode is 'named' by its dev/inumber pair. (iget/iget.c) | |
be213d5e | 31 | * Data in `struct dinode' is read in from permanent inode on volume. |
d0064d3a | 32 | */ |
ad30fb67 | 33 | |
a59abf09 | 34 | struct inode { |
be213d5e KM |
35 | struct inode *i_chain[2]; /* hash chain, MUST be first */ |
36 | struct vnode *i_vnode; /* vnode associated with this inode */ | |
6d0f0ece | 37 | struct vnode *i_devvp; /* vnode for block I/O */ |
be213d5e | 38 | u_short i_flag; /* see below */ |
d0064d3a BJ |
39 | dev_t i_dev; /* device where inode resides */ |
40 | ino_t i_number; /* i number, 1-to-1 with device address */ | |
ad30fb67 | 41 | struct fs *i_fs; /* file sys associated with this inode */ |
3e27ef55 | 42 | struct dquot *i_dquot; /* quota structure controlling this file */ |
68dc14d7 | 43 | struct text *i_text; /* text entry, if any (should be region) */ |
be213d5e | 44 | long i_diroff; /* offset in dir, where we found last entry */ |
6d0f0ece | 45 | off_t i_endoff; /* end of useful stuff in directory */ |
361968cf | 46 | long i_spare[5]; |
d0064d3a | 47 | union { |
ad30fb67 KM |
48 | daddr_t if_lastr; /* last read (read-ahead) */ |
49 | struct socket *is_socket; | |
d0064d3a | 50 | } i_un; |
be213d5e | 51 | struct dinode i_din; /* the on-disk inode */ |
d0064d3a BJ |
52 | }; |
53 | ||
be213d5e KM |
54 | #define i_mode i_din.di_mode |
55 | #define i_nlink i_din.di_nlink | |
56 | #define i_uid i_din.di_uid | |
57 | #define i_gid i_din.di_gid | |
961945a8 | 58 | /* ugh! -- must be fixed */ |
22a22bd0 | 59 | #if defined(vax) || defined(tahoe) |
be213d5e | 60 | #define i_size i_din.di_qsize.val[0] |
961945a8 | 61 | #endif |
be213d5e KM |
62 | #define i_db i_din.di_db |
63 | #define i_ib i_din.di_ib | |
64 | #define i_atime i_din.di_atime | |
65 | #define i_mtime i_din.di_mtime | |
66 | #define i_ctime i_din.di_ctime | |
67 | #define i_blocks i_din.di_blocks | |
68 | #define i_rdev i_din.di_db[0] | |
69 | #define i_flags i_din.di_flags | |
70 | #define i_gen i_din.di_gen | |
ad30fb67 | 71 | #define i_lastr i_un.if_lastr |
7ef603f5 | 72 | #define i_socket i_un.is_socket |
69bd12a8 RE |
73 | #define i_forw i_chain[0] |
74 | #define i_back i_chain[1] | |
ad30fb67 | 75 | |
d0064d3a | 76 | /* flags */ |
02dd5a44 | 77 | #define ILOCKED 0x1 /* inode is locked */ |
b0954044 SL |
78 | #define IUPD 0x2 /* file has been modified */ |
79 | #define IACC 0x4 /* inode access time to be updated */ | |
6d0f0ece KM |
80 | #define IWANT 0x8 /* some process waiting on lock */ |
81 | #define ICHG 0x10 /* inode has been changed */ | |
82 | #define ISHLOCK 0x20 /* file has shared lock */ | |
83 | #define IEXLOCK 0x40 /* file has exclusive lock */ | |
84 | #define ILWAIT 0x80 /* someone waiting on file lock */ | |
85 | #define IMOD 0x100 /* inode has been modified */ | |
86 | #define IRENAME 0x200 /* inode is being renamed */ | |
d0064d3a | 87 | |
6d0f0ece KM |
88 | #ifdef KERNEL |
89 | /* | |
90 | * Convert between inode pointers and vnode pointers | |
91 | */ | |
92 | #define VTOI(vp) ((struct inode *)(vp)->v_data) | |
be213d5e | 93 | #define ITOV(ip) ((ip)->i_vnode) |
6d0f0ece KM |
94 | |
95 | /* | |
96 | * Convert between vnode types and inode formats | |
97 | */ | |
98 | extern enum vtype iftovt_tab[]; | |
99 | extern int vttoif_tab[]; | |
100 | #define IFTOVT(mode) (iftovt_tab[((mode) & IFMT) >> 13]) | |
101 | #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) | |
102 | ||
103 | #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) | |
104 | ||
361968cf KM |
105 | u_long nextgennumber; /* next generation number to assign */ |
106 | ||
107 | extern ino_t dirpref(); | |
108 | ||
6d0f0ece KM |
109 | /* |
110 | * Lock and unlock inodes. | |
111 | */ | |
30fd732d | 112 | #ifdef notdef |
02dd5a44 BJ |
113 | #define ILOCK(ip) { \ |
114 | while ((ip)->i_flag & ILOCKED) { \ | |
115 | (ip)->i_flag |= IWANT; \ | |
6d0f0ece | 116 | (void) sleep((caddr_t)(ip), PINOD); \ |
02dd5a44 BJ |
117 | } \ |
118 | (ip)->i_flag |= ILOCKED; \ | |
119 | } | |
120 | ||
121 | #define IUNLOCK(ip) { \ | |
122 | (ip)->i_flag &= ~ILOCKED; \ | |
123 | if ((ip)->i_flag&IWANT) { \ | |
124 | (ip)->i_flag &= ~IWANT; \ | |
125 | wakeup((caddr_t)(ip)); \ | |
126 | } \ | |
127 | } | |
30fd732d KM |
128 | #else |
129 | #define ILOCK(ip) ilock(ip) | |
130 | #define IUNLOCK(ip) iunlock(ip) | |
131 | #endif | |
02dd5a44 BJ |
132 | |
133 | #define IUPDAT(ip, t1, t2, waitfor) { \ | |
232d0cb7 | 134 | if (ip->i_flag&(IUPD|IACC|ICHG|IMOD)) \ |
6d0f0ece | 135 | (void) iupdat(ip, t1, t2, waitfor); \ |
02dd5a44 | 136 | } |
232d0cb7 MK |
137 | |
138 | #define ITIMES(ip, t1, t2) { \ | |
139 | if ((ip)->i_flag&(IUPD|IACC|ICHG)) { \ | |
140 | (ip)->i_flag |= IMOD; \ | |
141 | if ((ip)->i_flag&IACC) \ | |
142 | (ip)->i_atime = (t1)->tv_sec; \ | |
143 | if ((ip)->i_flag&IUPD) \ | |
144 | (ip)->i_mtime = (t2)->tv_sec; \ | |
145 | if ((ip)->i_flag&ICHG) \ | |
146 | (ip)->i_ctime = time.tv_sec; \ | |
147 | (ip)->i_flag &= ~(IACC|IUPD|ICHG); \ | |
148 | } \ | |
149 | } | |
6d0f0ece KM |
150 | |
151 | /* | |
152 | * This overlays the fid sturcture (see mount.h) | |
153 | */ | |
154 | struct ufid { | |
be213d5e KM |
155 | u_short ufid_len; /* length of structure */ |
156 | u_short ufid_pad; /* force long alignment */ | |
157 | ino_t ufid_ino; /* file number (ino) */ | |
158 | long ufid_gen; /* generation number */ | |
6d0f0ece KM |
159 | }; |
160 | #endif |