Annotation of src/sys/ufs/ufs/inode.h, Revision 1.27.8.1
1.27.8.1! gehenna 1: /* $NetBSD: inode.h,v 1.28 2002/06/16 00:13:17 perseant Exp $ */
1.6 mycroft 2:
1.1 mycroft 3: /*
4: * Copyright (c) 1982, 1989, 1993
5: * The Regents of the University of California. All rights reserved.
6: * (c) UNIX System Laboratories, Inc.
7: * All or some portions of this file are derived from material licensed
8: * to the University of California by American Telephone and Telegraph
9: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10: * the permission of UNIX System Laboratories, Inc.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
20: * 3. All advertising materials mentioning features or use of this software
21: * must display the following acknowledgement:
22: * This product includes software developed by the University of
23: * California, Berkeley and its contributors.
24: * 4. Neither the name of the University nor the names of its contributors
25: * may be used to endorse or promote products derived from this software
26: * without specific prior written permission.
27: *
28: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38: * SUCH DAMAGE.
39: *
1.11 fvdl 40: * @(#)inode.h 8.9 (Berkeley) 5/14/95
1.1 mycroft 41: */
42:
1.23 chs 43: #include <sys/vnode.h>
1.1 mycroft 44: #include <ufs/ufs/dinode.h>
1.8 cgd 45: #include <ufs/ufs/dir.h>
1.26 lukem 46: #include <ufs/ufs/quota.h>
1.10 bouyer 47: #include <ufs/ext2fs/ext2fs_dinode.h>
1.25 chs 48: #include <miscfs/genfs/genfs_node.h>
1.10 bouyer 49:
50: /*
51: * Per-filesystem inode extensions.
52: */
53: struct ext2fs_inode_ext {
1.15 enami 54: ufs_daddr_t ext2fs_last_lblk; /* last logical block allocated */
55: ufs_daddr_t ext2fs_last_blk; /* last block allocated on disk */
1.14 fvdl 56: };
57:
1.20 perseant 58: struct lfs_inode_ext {
59: u_int32_t lfs_effnblocks; /* number of blocks when i/o completes */
1.10 bouyer 60: };
1.1 mycroft 61:
62: /*
1.5 mycroft 63: * The inode is used to describe each active (or recently active) file in the
64: * UFS filesystem. It is composed of two types of information. The first part
65: * is the information that is needed only while the file is active (such as
66: * the identity of the file and linkage to speed its lookup). The second part
1.20 perseant 67: * is the permanent meta-data associated with the file which is read in
1.5 mycroft 68: * from the permanent dinode from long term storage when the file becomes
69: * active, and is put back when the file is no longer being used.
1.1 mycroft 70: */
71: struct inode {
1.25 chs 72: struct genfs_node i_gnode;
1.11 fvdl 73: LIST_ENTRY(inode) i_hash;/* Hash chain. */
1.15 enami 74: struct vnode *i_vnode; /* Vnode associated with this inode. */
75: struct vnode *i_devvp; /* Vnode for block I/O. */
1.5 mycroft 76: u_int32_t i_flag; /* flags, see below */
77: dev_t i_dev; /* Device associated with the inode. */
78: ino_t i_number; /* The identity of the inode. */
1.4 cgd 79:
1.1 mycroft 80: union { /* Associated filesystem. */
1.5 mycroft 81: struct fs *fs; /* FFS */
82: struct lfs *lfs; /* LFS */
1.15 enami 83: struct m_ext2fs *e2fs; /* EXT2FS */
1.1 mycroft 84: } inode_u;
85: #define i_fs inode_u.fs
86: #define i_lfs inode_u.lfs
1.15 enami 87: #define i_e2fs inode_u.e2fs
1.4 cgd 88:
1.23 chs 89: struct buflists i_pcbufhd; /* softdep pagecache buffer head */
1.5 mycroft 90: struct dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */
1.4 cgd 91: u_quad_t i_modrev; /* Revision level for NFS lease. */
1.5 mycroft 92: struct lockf *i_lockf;/* Head of byte-level lock list. */
1.25 chs 93:
1.5 mycroft 94: /*
95: * Side effects; used during directory lookup.
96: */
97: int32_t i_count; /* Size of free slot in directory. */
98: doff_t i_endoff; /* End of useful stuff in directory. */
99: doff_t i_diroff; /* Offset in dir, where we found last entry. */
100: doff_t i_offset; /* Offset of free space in directory. */
101: ino_t i_ino; /* Inode number of found directory. */
102: u_int32_t i_reclen; /* Size of found directory entry. */
1.20 perseant 103: int i_ffs_effnlink; /* i_nlink when I/O completes */
1.5 mycroft 104: /*
1.10 bouyer 105: * Inode extensions
106: */
107: union {
108: /* Other extensions could go here... */
1.15 enami 109: struct ext2fs_inode_ext e2fs;
1.20 perseant 110: struct lfs_inode_ext lfs;
1.10 bouyer 111: } inode_ext;
1.15 enami 112: #define i_e2fs_last_lblk inode_ext.e2fs.ext2fs_last_lblk
113: #define i_e2fs_last_blk inode_ext.e2fs.ext2fs_last_blk
1.20 perseant 114: #define i_lfs_effnblks inode_ext.lfs.lfs_effnblocks
1.10 bouyer 115: /*
1.5 mycroft 116: * The on-disk dinode itself.
117: */
1.10 bouyer 118: union {
119: struct dinode ffs_din; /* 128 bytes of the on-disk dinode. */
1.16 enami 120: struct ext2fs_dinode e2fs_din; /* 128 bytes of the on-disk
121: dinode. */
1.10 bouyer 122: } i_din;
1.1 mycroft 123: };
124:
1.10 bouyer 125: #define i_ffs_atime i_din.ffs_din.di_atime
1.15 enami 126: #define i_ffs_atimensec i_din.ffs_din.di_atimensec
127: #define i_ffs_blocks i_din.ffs_din.di_blocks
1.10 bouyer 128: #define i_ffs_ctime i_din.ffs_din.di_ctime
1.15 enami 129: #define i_ffs_ctimensec i_din.ffs_din.di_ctimensec
1.10 bouyer 130: #define i_ffs_db i_din.ffs_din.di_db
131: #define i_ffs_flags i_din.ffs_din.di_flags
132: #define i_ffs_gen i_din.ffs_din.di_gen
133: #define i_ffs_gid i_din.ffs_din.di_gid
134: #define i_ffs_ib i_din.ffs_din.di_ib
135: #define i_ffs_mode i_din.ffs_din.di_mode
136: #define i_ffs_mtime i_din.ffs_din.di_mtime
1.15 enami 137: #define i_ffs_mtimensec i_din.ffs_din.di_mtimensec
1.10 bouyer 138: #define i_ffs_nlink i_din.ffs_din.di_nlink
139: #define i_ffs_rdev i_din.ffs_din.di_rdev
1.15 enami 140: #define i_ffs_shortlink i_din.ffs_din.di_shortlink
1.10 bouyer 141: #define i_ffs_size i_din.ffs_din.di_size
142: #define i_ffs_uid i_din.ffs_din.di_uid
143:
1.15 enami 144: #define i_e2fs_mode i_din.e2fs_din.e2di_mode
145: #define i_e2fs_uid i_din.e2fs_din.e2di_uid
146: #define i_e2fs_size i_din.e2fs_din.e2di_size
147: #define i_e2fs_atime i_din.e2fs_din.e2di_atime
148: #define i_e2fs_ctime i_din.e2fs_din.e2di_ctime
149: #define i_e2fs_mtime i_din.e2fs_din.e2di_mtime
150: #define i_e2fs_dtime i_din.e2fs_din.e2di_dtime
151: #define i_e2fs_gid i_din.e2fs_din.e2di_gid
152: #define i_e2fs_nlink i_din.e2fs_din.e2di_nlink
153: #define i_e2fs_nblock i_din.e2fs_din.e2di_nblock
154: #define i_e2fs_flags i_din.e2fs_din.e2di_flags
155: #define i_e2fs_blocks i_din.e2fs_din.e2di_blocks
156: #define i_e2fs_gen i_din.e2fs_din.e2di_gen
157: #define i_e2fs_facl i_din.e2fs_din.e2di_facl
158: #define i_e2fs_dacl i_din.e2fs_din.e2di_dacl
159: #define i_e2fs_faddr i_din.e2fs_din.e2di_faddr
160: #define i_e2fs_nfrag i_din.e2fs_din.e2di_nfrag
161: #define i_e2fs_fsize i_din.e2fs_din.e2di_fsize
1.16 enami 162: #define i_e2fs_rdev i_din.e2fs_din.e2di_rdev
1.1 mycroft 163:
1.5 mycroft 164: /* These flags are kept in i_flag. */
165: #define IN_ACCESS 0x0001 /* Access time update request. */
166: #define IN_CHANGE 0x0002 /* Inode change time update request. */
1.11 fvdl 167: #define IN_UPDATE 0x0004 /* Modification time update request. */
168: #define IN_MODIFIED 0x0008 /* Inode has been modified. */
1.18 mycroft 169: #define IN_ACCESSED 0x0010 /* Inode has been accessed. */
170: #define IN_RENAME 0x0020 /* Inode is being renamed. */
171: #define IN_SHLOCK 0x0040 /* File has shared lock. */
172: #define IN_EXLOCK 0x0080 /* File has exclusive lock. */
173: #define IN_CLEANING 0x0100 /* LFS: file is being cleaned */
174: #define IN_ADIROP 0x0200 /* LFS: dirop in progress */
1.27 fvdl 175: #define IN_SPACECOUNTED 0x0400 /* Blocks to be freed in free count. */
1.5 mycroft 176:
1.24 mrg 177: #if defined(_KERNEL)
1.1 mycroft 178: /*
179: * Structure used to pass around logical block paths generated by
180: * ufs_getlbns and used by truncate and bmap code.
181: */
182: struct indir {
1.8 cgd 183: ufs_daddr_t in_lbn; /* Logical block number. */
1.1 mycroft 184: int in_off; /* Offset in buffer. */
185: int in_exists; /* Flag if the block exists. */
186: };
187:
188: /* Convert between inode pointers and vnode pointers. */
1.8 cgd 189: #define VTOI(vp) ((struct inode *)(vp)->v_data)
190: #define ITOV(ip) ((ip)->i_vnode)
1.1 mycroft 191:
1.10 bouyer 192: #define FFS_ITIMES(ip, acc, mod, cre) { \
193: if ((ip)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) { \
194: if ((ip)->i_flag & IN_ACCESS) { \
1.15 enami 195: (ip)->i_ffs_atime = (acc)->tv_sec; \
1.10 bouyer 196: (ip)->i_ffs_atimensec = (acc)->tv_nsec; \
1.18 mycroft 197: (ip)->i_flag |= IN_ACCESSED; \
1.10 bouyer 198: } \
199: if ((ip)->i_flag & IN_UPDATE) { \
1.15 enami 200: (ip)->i_ffs_mtime = (mod)->tv_sec; \
1.10 bouyer 201: (ip)->i_ffs_mtimensec = (mod)->tv_nsec; \
202: (ip)->i_modrev++; \
1.18 mycroft 203: (ip)->i_flag |= IN_MODIFIED; \
1.10 bouyer 204: } \
205: if ((ip)->i_flag & IN_CHANGE) { \
1.15 enami 206: (ip)->i_ffs_ctime = (cre)->tv_sec; \
1.10 bouyer 207: (ip)->i_ffs_ctimensec = (cre)->tv_nsec; \
1.18 mycroft 208: (ip)->i_flag |= IN_MODIFIED; \
1.10 bouyer 209: } \
210: (ip)->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE); \
211: } \
212: }
213:
1.15 enami 214: #define EXT2FS_ITIMES(ip, acc, mod, cre) { \
1.1 mycroft 215: if ((ip)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) { \
1.9 mycroft 216: if ((ip)->i_flag & IN_ACCESS) { \
1.15 enami 217: (ip)->i_e2fs_atime = (acc)->tv_sec; \
1.19 mycroft 218: (ip)->i_flag |= IN_ACCESSED; \
1.9 mycroft 219: } \
1.1 mycroft 220: if ((ip)->i_flag & IN_UPDATE) { \
1.15 enami 221: (ip)->i_e2fs_mtime = (mod)->tv_sec; \
1.1 mycroft 222: (ip)->i_modrev++; \
1.19 mycroft 223: (ip)->i_flag |= IN_MODIFIED; \
1.1 mycroft 224: } \
1.9 mycroft 225: if ((ip)->i_flag & IN_CHANGE) { \
1.15 enami 226: (ip)->i_e2fs_ctime = (cre)->tv_sec; \
1.19 mycroft 227: (ip)->i_flag |= IN_MODIFIED; \
1.9 mycroft 228: } \
1.1 mycroft 229: (ip)->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE); \
230: } \
1.10 bouyer 231: }
232:
1.15 enami 233: #define ITIMES(ip, acc, mod, cre) { \
234: if (IS_EXT2_VNODE((ip)->i_vnode)) \
235: EXT2FS_ITIMES(ip, acc, mod, cre) \
236: else \
237: FFS_ITIMES(ip, acc, mod, cre) \
1.1 mycroft 238: }
1.14 fvdl 239:
240: /* Determine if soft dependencies are being done */
1.15 enami 241: #define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP)
1.1 mycroft 242:
243: /* This overlays the fid structure (see mount.h). */
244: struct ufid {
1.5 mycroft 245: u_int16_t ufid_len; /* Length of structure. */
246: u_int16_t ufid_pad; /* Force 32-bit alignment. */
247: ino_t ufid_ino; /* File number (ino). */
248: int32_t ufid_gen; /* Generation number. */
1.1 mycroft 249: };
1.7 jtc 250: #endif /* _KERNEL */
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