Commit | Line | Data |
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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 | * |
beeb3369 | 5 | * %sccs.include.redist.c% |
6d0f0ece | 6 | * |
beeb3369 | 7 | * @(#)inode.h 7.13 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
d0064d3a | 9 | |
be213d5e KM |
10 | #ifdef KERNEL |
11 | #include "../ufs/dinode.h" | |
12 | #else | |
13 | #include <ufs/dinode.h> | |
14 | #endif | |
15 | ||
d0064d3a | 16 | /* |
a59abf09 BJ |
17 | * The I node is the focus of all file activity in UNIX. |
18 | * There is a unique inode allocated for each active file, | |
19 | * each current directory, each mounted-on file, text file, and the root. | |
20 | * An inode is 'named' by its dev/inumber pair. (iget/iget.c) | |
be213d5e | 21 | * Data in `struct dinode' is read in from permanent inode on volume. |
d0064d3a | 22 | */ |
ad30fb67 | 23 | |
a59abf09 | 24 | struct inode { |
be213d5e KM |
25 | struct inode *i_chain[2]; /* hash chain, MUST be first */ |
26 | struct vnode *i_vnode; /* vnode associated with this inode */ | |
6d0f0ece | 27 | struct vnode *i_devvp; /* vnode for block I/O */ |
0997b03c | 28 | u_long i_flag; /* see below */ |
d0064d3a BJ |
29 | dev_t i_dev; /* device where inode resides */ |
30 | ino_t i_number; /* i number, 1-to-1 with device address */ | |
ad30fb67 | 31 | struct fs *i_fs; /* file sys associated with this inode */ |
6b5f0ada | 32 | struct dquot *i_dquot[MAXQUOTAS]; /* pointer to dquot strauctures */ |
be213d5e | 33 | long i_diroff; /* offset in dir, where we found last entry */ |
6d0f0ece | 34 | off_t i_endoff; /* end of useful stuff in directory */ |
0997b03c KM |
35 | long i_spare0; |
36 | long i_spare1; | |
be213d5e | 37 | struct dinode i_din; /* the on-disk inode */ |
d0064d3a BJ |
38 | }; |
39 | ||
be213d5e KM |
40 | #define i_mode i_din.di_mode |
41 | #define i_nlink i_din.di_nlink | |
42 | #define i_uid i_din.di_uid | |
43 | #define i_gid i_din.di_gid | |
beeb3369 | 44 | #if BYTE_ORDER == LITTLE_ENDIAN || defined(tahoe) /* ugh! -- must be fixed */ |
be213d5e | 45 | #define i_size i_din.di_qsize.val[0] |
beeb3369 KM |
46 | #else /* BYTE_ORDER == BIG_ENDIAN */ |
47 | #define i_size i_din.di_qsize.val[1] | |
961945a8 | 48 | #endif |
be213d5e KM |
49 | #define i_db i_din.di_db |
50 | #define i_ib i_din.di_ib | |
51 | #define i_atime i_din.di_atime | |
52 | #define i_mtime i_din.di_mtime | |
53 | #define i_ctime i_din.di_ctime | |
54 | #define i_blocks i_din.di_blocks | |
55 | #define i_rdev i_din.di_db[0] | |
56 | #define i_flags i_din.di_flags | |
57 | #define i_gen i_din.di_gen | |
69bd12a8 RE |
58 | #define i_forw i_chain[0] |
59 | #define i_back i_chain[1] | |
ad30fb67 | 60 | |
d0064d3a | 61 | /* flags */ |
771f4649 KM |
62 | #define ILOCKED 0x0001 /* inode is locked */ |
63 | #define IWANT 0x0002 /* some process waiting on lock */ | |
64 | #define IRENAME 0x0004 /* inode is being renamed */ | |
65 | #define IUPD 0x0010 /* file has been modified */ | |
66 | #define IACC 0x0020 /* inode access time to be updated */ | |
67 | #define ICHG 0x0040 /* inode has been changed */ | |
68 | #define IMOD 0x0080 /* inode has been modified */ | |
69 | #define ISHLOCK 0x0100 /* file has shared lock */ | |
70 | #define IEXLOCK 0x0200 /* file has exclusive lock */ | |
71 | #define ILWAIT 0x0400 /* someone waiting on file lock */ | |
d0064d3a | 72 | |
6d0f0ece KM |
73 | #ifdef KERNEL |
74 | /* | |
75 | * Convert between inode pointers and vnode pointers | |
76 | */ | |
77 | #define VTOI(vp) ((struct inode *)(vp)->v_data) | |
be213d5e | 78 | #define ITOV(ip) ((ip)->i_vnode) |
6d0f0ece KM |
79 | |
80 | /* | |
81 | * Convert between vnode types and inode formats | |
82 | */ | |
83 | extern enum vtype iftovt_tab[]; | |
84 | extern int vttoif_tab[]; | |
45b72508 | 85 | #define IFTOVT(mode) (iftovt_tab[((mode) & IFMT) >> 12]) |
6d0f0ece KM |
86 | #define VTTOIF(indx) (vttoif_tab[(int)(indx)]) |
87 | ||
88 | #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode)) | |
89 | ||
361968cf KM |
90 | u_long nextgennumber; /* next generation number to assign */ |
91 | ||
92 | extern ino_t dirpref(); | |
93 | ||
6d0f0ece KM |
94 | /* |
95 | * Lock and unlock inodes. | |
96 | */ | |
30fd732d | 97 | #ifdef notdef |
02dd5a44 BJ |
98 | #define ILOCK(ip) { \ |
99 | while ((ip)->i_flag & ILOCKED) { \ | |
100 | (ip)->i_flag |= IWANT; \ | |
6d0f0ece | 101 | (void) sleep((caddr_t)(ip), PINOD); \ |
02dd5a44 BJ |
102 | } \ |
103 | (ip)->i_flag |= ILOCKED; \ | |
104 | } | |
105 | ||
106 | #define IUNLOCK(ip) { \ | |
107 | (ip)->i_flag &= ~ILOCKED; \ | |
108 | if ((ip)->i_flag&IWANT) { \ | |
109 | (ip)->i_flag &= ~IWANT; \ | |
110 | wakeup((caddr_t)(ip)); \ | |
111 | } \ | |
112 | } | |
30fd732d KM |
113 | #else |
114 | #define ILOCK(ip) ilock(ip) | |
115 | #define IUNLOCK(ip) iunlock(ip) | |
116 | #endif | |
02dd5a44 BJ |
117 | |
118 | #define IUPDAT(ip, t1, t2, waitfor) { \ | |
232d0cb7 | 119 | if (ip->i_flag&(IUPD|IACC|ICHG|IMOD)) \ |
6d0f0ece | 120 | (void) iupdat(ip, t1, t2, waitfor); \ |
02dd5a44 | 121 | } |
232d0cb7 MK |
122 | |
123 | #define ITIMES(ip, t1, t2) { \ | |
124 | if ((ip)->i_flag&(IUPD|IACC|ICHG)) { \ | |
125 | (ip)->i_flag |= IMOD; \ | |
126 | if ((ip)->i_flag&IACC) \ | |
127 | (ip)->i_atime = (t1)->tv_sec; \ | |
128 | if ((ip)->i_flag&IUPD) \ | |
129 | (ip)->i_mtime = (t2)->tv_sec; \ | |
130 | if ((ip)->i_flag&ICHG) \ | |
131 | (ip)->i_ctime = time.tv_sec; \ | |
132 | (ip)->i_flag &= ~(IACC|IUPD|ICHG); \ | |
133 | } \ | |
134 | } | |
6d0f0ece KM |
135 | |
136 | /* | |
137 | * This overlays the fid sturcture (see mount.h) | |
138 | */ | |
139 | struct ufid { | |
be213d5e KM |
140 | u_short ufid_len; /* length of structure */ |
141 | u_short ufid_pad; /* force long alignment */ | |
142 | ino_t ufid_ino; /* file number (ino) */ | |
143 | long ufid_gen; /* generation number */ | |
6d0f0ece KM |
144 | }; |
145 | #endif |