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 | * |
80e9de4e | 7 | * @(#)lfs_alloc.c 7.42 (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 | |
a58cc97d | 32 | lfs_valloc(pvp, notused, cred, vpp) |
889a3fb1 | 33 | struct vnode *pvp, **vpp; |
ddd9f644 | 34 | int notused; |
889a3fb1 | 35 | struct ucred *cred; |
e3fe2d69 | 36 | { |
4bed3ffc | 37 | struct lfs *fs; |
889a3fb1 KB |
38 | struct buf *bp; |
39 | struct ifile *ifp; | |
40 | struct inode *ip; | |
41 | struct vnode *vp; | |
42 | daddr_t blkno; | |
0b4d6502 | 43 | ino_t new_ino; |
889a3fb1 | 44 | u_long i, max; |
0b4d6502 | 45 | int error; |
e3fe2d69 | 46 | |
a71716ec KB |
47 | #ifdef VERBOSE |
48 | printf("lfs_valloc\n"); | |
49 | #endif | |
275ca4f0 | 50 | /* Get the head of the freelist. */ |
a58cc97d | 51 | fs = VTOI(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) { | |
69 | vp = fs->lfs_ivnode; | |
70 | ip = VTOI(vp); | |
71 | blkno = lblkno(fs, ip->i_size); | |
72 | printf("Extending ifile: blkno = %d\n", blkno); | |
73 | bp = getblk(vp, blkno, fs->lfs_bsize); | |
74 | if (!bp) { | |
75 | uprintf("\n%s: no inodes left\n", fs->lfs_fsmnt); | |
76 | log(LOG_ERR, "uid %d on %s: out of inodes\n", | |
77 | cred->cr_uid, fs->lfs_fsmnt); | |
78 | return (ENOSPC); | |
79 | } | |
80 | i = (blkno - fs->lfs_segtabsz - fs->lfs_cleansz) * | |
81 | fs->lfs_ifpb; | |
82 | printf("Extending ifile: first inum = %d\n", i); | |
83 | fs->lfs_free = i; | |
84 | max = i + fs->lfs_ifpb; | |
85 | printf("Extending ifile: max inum = %d\n", max); | |
86 | for (ifp = (struct ifile *)bp->b_un.b_words; i < max; ++ifp) { | |
87 | ifp->if_version = 1; | |
88 | ifp->if_daddr = LFS_UNUSED_DADDR; | |
89 | ifp->if_nextfree = ++i; | |
90 | } | |
91 | ifp--; | |
92 | ifp->if_nextfree = LFS_UNUSED_INUM; | |
93 | ||
94 | ++ip->i_blocks; /* XXX This may not be right. */ | |
95 | ip->i_size += fs->lfs_bsize; | |
96 | printf("Extending ifile: blocks = %d size = %d\n", ip->i_blocks, ip->i_size); | |
80e9de4e | 97 | vnode_pager_setsize(vp, (u_long)ip->i_size); |
889a3fb1 KB |
98 | vnode_pager_uncache(vp); |
99 | LFS_UBWRITE(bp); | |
100 | } | |
07670f7d | 101 | |
275ca4f0 | 102 | /* Create a vnode to associate with the inode. */ |
a58cc97d | 103 | if (error = lfs_vcreate(pvp->v_mount, new_ino, &vp)) |
7188ac27 | 104 | return (error); |
a58cc97d KM |
105 | *vpp = vp; |
106 | ip = VTOI(vp); | |
107 | VREF(ip->i_devvp); | |
0b4d6502 | 108 | |
889a3fb1 KB |
109 | /* Zero out the direct and indirect block addresses. */ |
110 | bzero(ip->i_db, (NDADDR + NIADDR) * sizeof(daddr_t)); | |
111 | ||
275ca4f0 | 112 | /* Set a new generation number for this inode. */ |
fb92d0ab KM |
113 | if (++nextgennumber < (u_long)time.tv_sec) |
114 | nextgennumber = time.tv_sec; | |
115 | ip->i_gen = nextgennumber; | |
e3fe2d69 | 116 | |
275ca4f0 | 117 | /* Insert into the inode hash table. */ |
ddd9f644 | 118 | ufs_ihashins(ip); |
743f1ef7 | 119 | |
275ca4f0 KB |
120 | /* Set superblock modified bit and increment file count. */ |
121 | fs->lfs_fmod = 1; | |
122 | ++fs->lfs_nfiles; | |
0b4d6502 | 123 | return (0); |
e3fe2d69 KM |
124 | } |
125 | ||
275ca4f0 | 126 | /* Create a new vnode/inode pair and initialize what fields we can. */ |
0a0d4fba | 127 | int |
0b4d6502 | 128 | lfs_vcreate(mp, ino, vpp) |
889a3fb1 | 129 | struct mount *mp; |
0b4d6502 | 130 | ino_t ino; |
889a3fb1 | 131 | struct vnode **vpp; |
e3fe2d69 | 132 | { |
a58cc97d | 133 | extern struct vnodeops lfs_vnodeops; |
889a3fb1 KB |
134 | struct inode *ip; |
135 | struct ufsmount *ump; | |
0b4d6502 KB |
136 | int error, i; |
137 | ||
a71716ec | 138 | #ifdef VERBOSE |
ddd9f644 KB |
139 | printf("lfs_vcreate: ino %d\n", ino); |
140 | #endif | |
275ca4f0 | 141 | /* Create the vnode. */ |
4c5ed28a KM |
142 | if (error = getnewvnode(VT_LFS, mp, &lfs_vnodeops, vpp)) { |
143 | *vpp = NULL; | |
5e1f6927 | 144 | return (error); |
4c5ed28a | 145 | } |
0b4d6502 | 146 | |
275ca4f0 | 147 | /* Get a pointer to the private mount structure. */ |
0b4d6502 KB |
148 | ump = VFSTOUFS(mp); |
149 | ||
150 | /* Initialize the inode. */ | |
4c5ed28a KM |
151 | MALLOC(ip, struct inode *, sizeof(struct inode), M_LFSNODE, M_WAITOK); |
152 | (*vpp)->v_data = ip; | |
a58cc97d | 153 | ip->i_vnode = *vpp; |
1ef966ee | 154 | ip->i_devvp = ump->um_devvp; |
0b4d6502 | 155 | ip->i_flag = 0; |
a58cc97d | 156 | ip->i_dev = ump->um_dev; |
d5075120 | 157 | ip->i_number = ip->i_din.di_inum = ino; |
a58cc97d | 158 | ip->i_lfs = ump->um_lfs; |
0b4d6502 KB |
159 | #ifdef QUOTA |
160 | for (i = 0; i < MAXQUOTAS; i++) | |
161 | ip->i_dquot[i] = NODQUOT; | |
162 | #endif | |
1ef966ee KB |
163 | ip->i_lockf = 0; |
164 | ip->i_diroff = 0; | |
165 | ip->i_mode = 0; | |
166 | ip->i_size = 0; | |
0b4d6502 | 167 | return (0); |
e3fe2d69 | 168 | } |
d5075120 | 169 | |
ddd9f644 KB |
170 | /* Free an inode. */ |
171 | /* ARGUSED */ | |
275ca4f0 | 172 | void |
a58cc97d | 173 | lfs_vfree(vp, notused1, notused2) |
889a3fb1 | 174 | struct vnode *vp; |
ddd9f644 KB |
175 | ino_t notused1; |
176 | int notused2; | |
275ca4f0 | 177 | { |
01932c99 | 178 | SEGUSE *sup; |
889a3fb1 KB |
179 | struct buf *bp; |
180 | struct ifile *ifp; | |
181 | struct inode *ip; | |
4bed3ffc | 182 | struct lfs *fs; |
01932c99 | 183 | daddr_t old_iaddr; |
275ca4f0 KB |
184 | ino_t ino; |
185 | ||
a58cc97d | 186 | ip = VTOI(vp); |
a71716ec KB |
187 | #ifdef VERBOSE |
188 | printf("lfs_vfree: free %d\n", ip->i_number); | |
ddd9f644 KB |
189 | #endif |
190 | /* Get the inode number and file system. */ | |
275ca4f0 KB |
191 | fs = ip->i_lfs; |
192 | ino = ip->i_number; | |
ddd9f644 KB |
193 | |
194 | /* | |
1344ae31 KB |
195 | * Set the ifile's inode entry to unused, increment its version number |
196 | * and link it into the free chain. | |
ddd9f644 | 197 | */ |
275ca4f0 | 198 | LFS_IENTRY(ifp, fs, ino, bp); |
01932c99 | 199 | old_iaddr = ifp->if_daddr; |
ddd9f644 KB |
200 | ifp->if_daddr = LFS_UNUSED_DADDR; |
201 | ++ifp->if_version; | |
202 | ifp->if_nextfree = fs->lfs_free; | |
203 | fs->lfs_free = ino; | |
889a3fb1 | 204 | LFS_UBWRITE(bp); |
ddd9f644 | 205 | |
01932c99 CS |
206 | if (old_iaddr != LFS_UNUSED_DADDR) { |
207 | LFS_SEGENTRY(sup, fs, datosn(fs, old_iaddr), bp); | |
208 | #ifdef DIAGNOSTIC | |
209 | if (sup->su_nbytes < sizeof(struct dinode)) | |
210 | panic("lfs_vfree: negative byte count (segment %d)\n", | |
211 | datosn(fs, old_iaddr)); | |
212 | #endif | |
213 | sup->su_nbytes -= sizeof(struct dinode); | |
214 | LFS_UBWRITE(bp); | |
215 | } | |
216 | ||
ddd9f644 KB |
217 | /* Set superblock modified bit and decrement file count. */ |
218 | fs->lfs_fmod = 1; | |
219 | --fs->lfs_nfiles; | |
275ca4f0 | 220 | } |