Commit | Line | Data |
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da7c5cc6 | 1 | /* |
4bed3ffc | 2 | * Copyright (c) 1991 Regents of the University of California. |
202a4bd9 | 3 | * All rights reserved. |
da7c5cc6 | 4 | * |
b702c21d | 5 | * %sccs.include.redist.c% |
202a4bd9 | 6 | * |
a18538c9 | 7 | * @(#)lfs_alloc.c 7.54 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
e3fe2d69 | 9 | |
ddd9f644 KB |
10 | #include <sys/param.h> |
11 | #include <sys/kernel.h> | |
12 | #include <sys/buf.h> | |
13 | #include <sys/vnode.h> | |
14 | #include <sys/syslog.h> | |
15 | #include <sys/mount.h> | |
4c5ed28a | 16 | #include <sys/malloc.h> |
c6f5111d | 17 | |
80e9de4e KM |
18 | #include <vm/vm.h> |
19 | ||
4bed3ffc KB |
20 | #include <ufs/ufs/quota.h> |
21 | #include <ufs/ufs/inode.h> | |
22 | #include <ufs/ufs/ufsmount.h> | |
ddd9f644 | 23 | |
4bed3ffc KB |
24 | #include <ufs/lfs/lfs.h> |
25 | #include <ufs/lfs/lfs_extern.h> | |
26 | ||
27 | extern u_long nextgennumber; | |
ddd9f644 KB |
28 | |
29 | /* Allocate a new inode. */ | |
30 | /* ARGSUSED */ | |
31 | int | |
fc250aa9 MS |
32 | lfs_valloc(ap) |
33 | struct vop_valloc_args /* { | |
34 | struct vnode *a_pvp; | |
35 | int a_mode; | |
36 | struct ucred *a_cred; | |
37 | struct vnode **a_vpp; | |
38 | } */ *ap; | |
e3fe2d69 | 39 | { |
4bed3ffc | 40 | struct lfs *fs; |
889a3fb1 KB |
41 | struct buf *bp; |
42 | struct ifile *ifp; | |
43 | struct inode *ip; | |
44 | struct vnode *vp; | |
45 | daddr_t blkno; | |
0b4d6502 | 46 | ino_t new_ino; |
889a3fb1 | 47 | u_long i, max; |
a18538c9 | 48 | int bb, error; |
e3fe2d69 | 49 | |
275ca4f0 | 50 | /* Get the head of the freelist. */ |
e1b76915 | 51 | fs = VTOI(ap->a_pvp)->i_lfs; |
0b4d6502 | 52 | new_ino = fs->lfs_free; |
ddd9f644 KB |
53 | #ifdef ALLOCPRINT |
54 | printf("lfs_ialloc: allocate inode %d\n", new_ino); | |
55 | #endif | |
0b4d6502 | 56 | |
1344ae31 | 57 | /* |
889a3fb1 KB |
58 | * Remove the inode from the free list and write the new start |
59 | * of the free list into the superblock. | |
1344ae31 | 60 | */ |
0b4d6502 | 61 | LFS_IENTRY(ifp, fs, new_ino, bp); |
0b4d6502 | 62 | if (ifp->if_daddr != LFS_UNUSED_DADDR) |
275ca4f0 | 63 | panic("lfs_ialloc: inuse inode on the free list"); |
0b4d6502 | 64 | fs->lfs_free = ifp->if_nextfree; |
889a3fb1 KB |
65 | brelse(bp); |
66 | ||
67 | /* Extend IFILE so that the next lfs_valloc will succeed. */ | |
68 | if (fs->lfs_free == LFS_UNUSED_INUM) { | |
a18538c9 MS |
69 | bb = fsbtodb(fs, 1); |
70 | if (!ISSPACE(fs, bb, ap->a_cred)) | |
71 | return(ENOSPC); | |
889a3fb1 KB |
72 | vp = fs->lfs_ivnode; |
73 | ip = VTOI(vp); | |
74 | blkno = lblkno(fs, ip->i_size); | |
889a3fb1 | 75 | bp = getblk(vp, blkno, fs->lfs_bsize); |
889a3fb1 KB |
76 | i = (blkno - fs->lfs_segtabsz - fs->lfs_cleansz) * |
77 | fs->lfs_ifpb; | |
889a3fb1 KB |
78 | fs->lfs_free = i; |
79 | max = i + fs->lfs_ifpb; | |
889a3fb1 KB |
80 | for (ifp = (struct ifile *)bp->b_un.b_words; i < max; ++ifp) { |
81 | ifp->if_version = 1; | |
82 | ifp->if_daddr = LFS_UNUSED_DADDR; | |
83 | ifp->if_nextfree = ++i; | |
84 | } | |
85 | ifp--; | |
86 | ifp->if_nextfree = LFS_UNUSED_INUM; | |
87 | ||
27273279 | 88 | ip->i_blocks += btodb(fs->lfs_bsize); |
a5d64982 | 89 | fs->lfs_bfree -= btodb(fs->lfs_bsize); |
889a3fb1 | 90 | ip->i_size += fs->lfs_bsize; |
80e9de4e | 91 | vnode_pager_setsize(vp, (u_long)ip->i_size); |
889a3fb1 | 92 | vnode_pager_uncache(vp); |
03dc7bb7 KB |
93 | if (error = VOP_BWRITE(bp)) |
94 | return (error); | |
889a3fb1 | 95 | } |
07670f7d | 96 | |
275ca4f0 | 97 | /* Create a vnode to associate with the inode. */ |
e1b76915 | 98 | if (error = lfs_vcreate(ap->a_pvp->v_mount, new_ino, &vp)) |
7188ac27 | 99 | return (error); |
e1b76915 | 100 | *ap->a_vpp = vp; |
fc250aa9 | 101 | vp->v_flag |= VDIROP; |
a58cc97d KM |
102 | ip = VTOI(vp); |
103 | VREF(ip->i_devvp); | |
0b4d6502 | 104 | |
889a3fb1 KB |
105 | /* Zero out the direct and indirect block addresses. */ |
106 | bzero(ip->i_db, (NDADDR + NIADDR) * sizeof(daddr_t)); | |
107 | ||
275ca4f0 | 108 | /* Set a new generation number for this inode. */ |
fb92d0ab KM |
109 | if (++nextgennumber < (u_long)time.tv_sec) |
110 | nextgennumber = time.tv_sec; | |
111 | ip->i_gen = nextgennumber; | |
e3fe2d69 | 112 | |
275ca4f0 | 113 | /* Insert into the inode hash table. */ |
ddd9f644 | 114 | ufs_ihashins(ip); |
743f1ef7 | 115 | |
275ca4f0 KB |
116 | /* Set superblock modified bit and increment file count. */ |
117 | fs->lfs_fmod = 1; | |
118 | ++fs->lfs_nfiles; | |
0b4d6502 | 119 | return (0); |
e3fe2d69 KM |
120 | } |
121 | ||
275ca4f0 | 122 | /* Create a new vnode/inode pair and initialize what fields we can. */ |
0a0d4fba | 123 | int |
0b4d6502 | 124 | lfs_vcreate(mp, ino, vpp) |
889a3fb1 | 125 | struct mount *mp; |
0b4d6502 | 126 | ino_t ino; |
889a3fb1 | 127 | struct vnode **vpp; |
e3fe2d69 | 128 | { |
9342689a | 129 | extern int (**lfs_vnodeop_p)(); |
889a3fb1 KB |
130 | struct inode *ip; |
131 | struct ufsmount *ump; | |
0b4d6502 KB |
132 | int error, i; |
133 | ||
275ca4f0 | 134 | /* Create the vnode. */ |
9342689a | 135 | if (error = getnewvnode(VT_LFS, mp, lfs_vnodeop_p, vpp)) { |
4c5ed28a | 136 | *vpp = NULL; |
5e1f6927 | 137 | return (error); |
4c5ed28a | 138 | } |
0b4d6502 | 139 | |
275ca4f0 | 140 | /* Get a pointer to the private mount structure. */ |
0b4d6502 KB |
141 | ump = VFSTOUFS(mp); |
142 | ||
143 | /* Initialize the inode. */ | |
4c5ed28a KM |
144 | MALLOC(ip, struct inode *, sizeof(struct inode), M_LFSNODE, M_WAITOK); |
145 | (*vpp)->v_data = ip; | |
a58cc97d | 146 | ip->i_vnode = *vpp; |
1ef966ee | 147 | ip->i_devvp = ump->um_devvp; |
03dc7bb7 | 148 | ip->i_flag = IMOD; |
a58cc97d | 149 | ip->i_dev = ump->um_dev; |
d5075120 | 150 | ip->i_number = ip->i_din.di_inum = ino; |
a58cc97d | 151 | ip->i_lfs = ump->um_lfs; |
0b4d6502 KB |
152 | #ifdef QUOTA |
153 | for (i = 0; i < MAXQUOTAS; i++) | |
154 | ip->i_dquot[i] = NODQUOT; | |
155 | #endif | |
1ef966ee KB |
156 | ip->i_lockf = 0; |
157 | ip->i_diroff = 0; | |
158 | ip->i_mode = 0; | |
159 | ip->i_size = 0; | |
a5d64982 | 160 | ip->i_blocks = 0; |
03dc7bb7 | 161 | ++ump->um_lfs->lfs_uinodes; |
0b4d6502 | 162 | return (0); |
e3fe2d69 | 163 | } |
d5075120 | 164 | |
ddd9f644 KB |
165 | /* Free an inode. */ |
166 | /* ARGUSED */ | |
988dbbfa | 167 | int |
fc250aa9 MS |
168 | lfs_vfree(ap) |
169 | struct vop_vfree_args /* { | |
170 | struct vnode *a_pvp; | |
171 | ino_t a_ino; | |
172 | int a_mode; | |
173 | } */ *ap; | |
275ca4f0 | 174 | { |
01932c99 | 175 | SEGUSE *sup; |
889a3fb1 KB |
176 | struct buf *bp; |
177 | struct ifile *ifp; | |
178 | struct inode *ip; | |
4bed3ffc | 179 | struct lfs *fs; |
01932c99 | 180 | daddr_t old_iaddr; |
275ca4f0 | 181 | ino_t ino; |
03dc7bb7 | 182 | int error; |
275ca4f0 | 183 | |
ddd9f644 | 184 | /* Get the inode number and file system. */ |
fa870596 | 185 | ip = VTOI(ap->a_pvp); |
275ca4f0 KB |
186 | fs = ip->i_lfs; |
187 | ino = ip->i_number; | |
03dc7bb7 KB |
188 | if (ip->i_flag & IMOD) { |
189 | --fs->lfs_uinodes; | |
190 | ip->i_flag &= ~(IMOD | IACC | IUPD | ICHG); | |
191 | } | |
ddd9f644 | 192 | /* |
1344ae31 KB |
193 | * Set the ifile's inode entry to unused, increment its version number |
194 | * and link it into the free chain. | |
ddd9f644 | 195 | */ |
275ca4f0 | 196 | LFS_IENTRY(ifp, fs, ino, bp); |
01932c99 | 197 | old_iaddr = ifp->if_daddr; |
ddd9f644 KB |
198 | ifp->if_daddr = LFS_UNUSED_DADDR; |
199 | ++ifp->if_version; | |
200 | ifp->if_nextfree = fs->lfs_free; | |
201 | fs->lfs_free = ino; | |
03dc7bb7 | 202 | (void) VOP_BWRITE(bp); |
ddd9f644 | 203 | |
01932c99 CS |
204 | if (old_iaddr != LFS_UNUSED_DADDR) { |
205 | LFS_SEGENTRY(sup, fs, datosn(fs, old_iaddr), bp); | |
206 | #ifdef DIAGNOSTIC | |
207 | if (sup->su_nbytes < sizeof(struct dinode)) | |
208 | panic("lfs_vfree: negative byte count (segment %d)\n", | |
209 | datosn(fs, old_iaddr)); | |
210 | #endif | |
211 | sup->su_nbytes -= sizeof(struct dinode); | |
03dc7bb7 | 212 | (void) VOP_BWRITE(bp); |
01932c99 CS |
213 | } |
214 | ||
ddd9f644 KB |
215 | /* Set superblock modified bit and decrement file count. */ |
216 | fs->lfs_fmod = 1; | |
217 | --fs->lfs_nfiles; | |
988dbbfa | 218 | return (0); |
275ca4f0 | 219 | } |