Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
52ff95c2 | 2 | * Copyright (c) 1989, 1991, 1993, 1994 |
ad0f93d2 | 3 | * The Regents of the University of California. All rights reserved. |
da7c5cc6 | 4 | * |
b702c21d | 5 | * %sccs.include.redist.c% |
7188ac27 | 6 | * |
06ce3734 | 7 | * @(#)lfs_vfsops.c 8.12 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
71e4e98b | 9 | |
c7e94c3a KB |
10 | #include <sys/param.h> |
11 | #include <sys/systm.h> | |
12 | #include <sys/namei.h> | |
13 | #include <sys/proc.h> | |
14 | #include <sys/kernel.h> | |
15 | #include <sys/vnode.h> | |
c7e94c3a KB |
16 | #include <sys/mount.h> |
17 | #include <sys/buf.h> | |
3a0a9bdc | 18 | #include <sys/mbuf.h> |
c7e94c3a KB |
19 | #include <sys/file.h> |
20 | #include <sys/disklabel.h> | |
21 | #include <sys/ioctl.h> | |
22 | #include <sys/errno.h> | |
23 | #include <sys/malloc.h> | |
3a0a9bdc | 24 | #include <sys/socket.h> |
cff1d696 KM |
25 | |
26 | #include <miscfs/specfs/specdev.h> | |
609e7cfa MK |
27 | #include "ioctl.h" |
28 | #include "disklabel.h" | |
29 | #include "stat.h" | |
71e4e98b | 30 | |
d9f5f868 KB |
31 | #include <ufs/ufs/quota.h> |
32 | #include <ufs/ufs/inode.h> | |
33 | #include <ufs/ufs/ufsmount.h> | |
34 | #include <ufs/ufs/ufs_extern.h> | |
c6f5111d | 35 | |
d9f5f868 KB |
36 | #include <ufs/lfs/lfs.h> |
37 | #include <ufs/lfs/lfs_extern.h> | |
275ca4f0 | 38 | |
79a0d4bf | 39 | int lfs_mountfs __P((struct vnode *, struct mount *, struct proc *)); |
0b4d6502 KB |
40 | |
41 | struct vfsops lfs_vfsops = { | |
42 | lfs_mount, | |
5bf9d21f | 43 | ufs_start, |
0b4d6502 | 44 | lfs_unmount, |
52ff95c2 | 45 | ufs_root, |
8dc876c1 | 46 | ufs_quotactl, |
0b4d6502 KB |
47 | lfs_statfs, |
48 | lfs_sync, | |
f7802306 | 49 | lfs_vget, |
b16ed5f4 KM |
50 | lfs_fhtovp, |
51 | lfs_vptofh, | |
c7e94c3a | 52 | lfs_init, |
06ce3734 | 53 | lfs_sysctl, |
7188ac27 KM |
54 | }; |
55 | ||
c7e94c3a | 56 | int |
0b4d6502 | 57 | lfs_mountroot() |
71e4e98b | 58 | { |
c7e94c3a | 59 | panic("lfs_mountroot"); /* XXX -- implement */ |
7188ac27 KM |
60 | } |
61 | ||
62 | /* | |
63 | * VFS Operations. | |
64 | * | |
65 | * mount system call | |
66 | */ | |
0b4d6502 | 67 | lfs_mount(mp, path, data, ndp, p) |
d45de50d | 68 | register struct mount *mp; |
7188ac27 KM |
69 | char *path; |
70 | caddr_t data; | |
71 | struct nameidata *ndp; | |
0eb6f54a | 72 | struct proc *p; |
7188ac27 KM |
73 | { |
74 | struct vnode *devvp; | |
75 | struct ufs_args args; | |
76 | struct ufsmount *ump; | |
d9f5f868 | 77 | register struct lfs *fs; /* LFS */ |
7188ac27 KM |
78 | u_int size; |
79 | int error; | |
38047d55 | 80 | mode_t accessmode; |
7188ac27 KM |
81 | |
82 | if (error = copyin(data, (caddr_t)&args, sizeof (struct ufs_args))) | |
83 | return (error); | |
c7e94c3a KB |
84 | |
85 | /* Until LFS can do NFS right. XXX */ | |
ea7e18a7 | 86 | if (args.export.ex_flags & MNT_EXPORTED) |
c7e94c3a | 87 | return (EINVAL); |
ea7e18a7 | 88 | |
190244fb MK |
89 | /* |
90 | * If updating, check whether changing from read-only to | |
91 | * read/write; if there is no device name, that's all we do. | |
92 | */ | |
93 | if (mp->mnt_flag & MNT_UPDATE) { | |
d48157d5 | 94 | ump = VFSTOUFS(mp); |
38047d55 KM |
95 | if (fs->lfs_ronly && (mp->mnt_flag & MNT_WANTRDWR)) { |
96 | /* | |
97 | * If upgrade to read-write by non-root, then verify | |
98 | * that user has necessary permissions on the device. | |
99 | */ | |
100 | if (p->p_ucred->cr_uid != 0) { | |
101 | VOP_LOCK(ump->um_devvp); | |
102 | if (error = VOP_ACCESS(ump->um_devvp, | |
103 | VREAD | VWRITE, p->p_ucred, p)) { | |
104 | VOP_UNLOCK(ump->um_devvp); | |
105 | return (error); | |
106 | } | |
107 | VOP_UNLOCK(ump->um_devvp); | |
108 | } | |
0b4d6502 | 109 | fs->lfs_ronly = 0; |
38047d55 | 110 | } |
64583792 KM |
111 | if (args.fspec == 0) { |
112 | /* | |
113 | * Process export requests. | |
114 | */ | |
ea7e18a7 | 115 | return (vfs_export(mp, &ump->um_export, &args.export)); |
64583792 | 116 | } |
190244fb MK |
117 | } |
118 | /* | |
119 | * Not an update, or updating the name: look up the name | |
120 | * and verify that it refers to a sensible block device. | |
121 | */ | |
995e59df KM |
122 | NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); |
123 | if (error = namei(ndp)) | |
190244fb MK |
124 | return (error); |
125 | devvp = ndp->ni_vp; | |
126 | if (devvp->v_type != VBLK) { | |
127 | vrele(devvp); | |
128 | return (ENOTBLK); | |
129 | } | |
130 | if (major(devvp->v_rdev) >= nblkdev) { | |
131 | vrele(devvp); | |
132 | return (ENXIO); | |
133 | } | |
38047d55 KM |
134 | /* |
135 | * If mount by non-root, then verify that user has necessary | |
136 | * permissions on the device. | |
137 | */ | |
138 | if (p->p_ucred->cr_uid != 0) { | |
139 | accessmode = VREAD; | |
140 | if ((mp->mnt_flag & MNT_RDONLY) == 0) | |
141 | accessmode |= VWRITE; | |
142 | VOP_LOCK(devvp); | |
143 | if (error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p)) { | |
144 | vput(devvp); | |
145 | return (error); | |
146 | } | |
147 | VOP_UNLOCK(devvp); | |
148 | } | |
190244fb | 149 | if ((mp->mnt_flag & MNT_UPDATE) == 0) |
0b4d6502 | 150 | error = lfs_mountfs(devvp, mp, p); /* LFS */ |
190244fb | 151 | else { |
d48157d5 KM |
152 | if (devvp != ump->um_devvp) |
153 | error = EINVAL; /* needs translation */ | |
2a7dbb09 KM |
154 | else |
155 | vrele(devvp); | |
d48157d5 | 156 | } |
7188ac27 KM |
157 | if (error) { |
158 | vrele(devvp); | |
159 | return (error); | |
27d00e76 | 160 | } |
7188ac27 | 161 | ump = VFSTOUFS(mp); |
0b4d6502 KB |
162 | fs = ump->um_lfs; /* LFS */ |
163 | #ifdef NOTLFS /* LFS */ | |
7188ac27 KM |
164 | (void) copyinstr(path, fs->fs_fsmnt, sizeof(fs->fs_fsmnt) - 1, &size); |
165 | bzero(fs->fs_fsmnt + size, sizeof(fs->fs_fsmnt) - size); | |
82161bc8 KM |
166 | bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, |
167 | MNAMELEN); | |
79a0d4bf | 168 | (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, |
82161bc8 KM |
169 | &size); |
170 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
0eb6f54a | 171 | (void) ufs_statfs(mp, &mp->mnt_stat, p); |
0b4d6502 KB |
172 | #else |
173 | (void)copyinstr(path, fs->lfs_fsmnt, sizeof(fs->lfs_fsmnt) - 1, &size); | |
174 | bzero(fs->lfs_fsmnt + size, sizeof(fs->lfs_fsmnt) - size); | |
175 | bcopy((caddr_t)fs->lfs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, | |
176 | MNAMELEN); | |
79a0d4bf | 177 | (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, |
0b4d6502 KB |
178 | &size); |
179 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
180 | (void) lfs_statfs(mp, &mp->mnt_stat, p); | |
181 | #endif | |
7188ac27 | 182 | return (0); |
71e4e98b SL |
183 | } |
184 | ||
7188ac27 KM |
185 | /* |
186 | * Common code for mount and mountroot | |
0b4d6502 | 187 | * LFS specific |
7188ac27 | 188 | */ |
79a0d4bf | 189 | int |
0b4d6502 | 190 | lfs_mountfs(devvp, mp, p) |
1182ae61 | 191 | register struct vnode *devvp; |
7188ac27 | 192 | struct mount *mp; |
0eb6f54a | 193 | struct proc *p; |
71e4e98b | 194 | { |
1c26e003 | 195 | extern struct vnode *rootvp; |
d9f5f868 | 196 | register struct lfs *fs; |
0b4d6502 | 197 | register struct ufsmount *ump; |
0b4d6502 KB |
198 | struct vnode *vp; |
199 | struct buf *bp; | |
200 | struct partinfo dpart; | |
0b4d6502 KB |
201 | dev_t dev; |
202 | int error, i, ronly, size; | |
9f246d5e | 203 | struct ucred *cred; |
71e4e98b | 204 | |
9f246d5e | 205 | cred = p ? p->p_ucred : NOCRED; |
1feabdab | 206 | if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p)) |
7188ac27 | 207 | return (error); |
0b4d6502 | 208 | |
9f246d5e | 209 | if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, cred, p) != 0) |
609e7cfa | 210 | size = DEV_BSIZE; |
0eb6f54a | 211 | else { |
ec67a3ce | 212 | size = dpart.disklab->d_secsize; |
0b4d6502 KB |
213 | #ifdef NEVER_USED |
214 | dpart.part->p_fstype = FS_LFS; | |
215 | dpart.part->p_fsize = fs->lfs_fsize; /* frag size */ | |
216 | dpart.part->p_frag = fs->lfs_frag; /* frags per block */ | |
217 | dpart.part->p_cpg = fs->lfs_segshift; /* segment shift */ | |
218 | #endif | |
7188ac27 | 219 | } |
0b4d6502 KB |
220 | |
221 | /* Don't free random space on error. */ | |
222 | bp = NULL; | |
223 | ump = NULL; | |
224 | ||
225 | /* Read in the superblock. */ | |
9f246d5e | 226 | if (error = bread(devvp, LFS_LABELPAD / size, LFS_SBPAD, cred, &bp)) |
71e4e98b | 227 | goto out; |
8dc876c1 | 228 | error = EINVAL; /* XXX needs translation */ |
1c281610 MK |
229 | goto out; |
230 | } | |
0b4d6502 KB |
231 | |
232 | /* Allocate the mount structure, copy the superblock into it. */ | |
8dc876c1 | 233 | ump = (struct ufsmount *)malloc(sizeof *ump, M_UFSMNT, M_WAITOK); |
0c0b26ec | 234 | fs = ump->um_lfs = malloc(sizeof(struct lfs), M_UFSMNT, M_WAITOK); |
cb84e0ab | 235 | bcopy(bp->b_data, fs, sizeof(struct lfs)); |
d9f5f868 | 236 | if (sizeof(struct lfs) < LFS_SBPAD) /* XXX why? */ |
5d96a9ad | 237 | bp->b_flags |= B_INVAL; |
e018935f MK |
238 | brelse(bp); |
239 | bp = NULL; | |
0b4d6502 | 240 | |
d5075120 KB |
241 | /* Set up the I/O information */ |
242 | fs->lfs_iocount = 0; | |
d5075120 | 243 | |
0c0b26ec | 244 | /* Set up the ifile and lock aflags */ |
3ce71481 KB |
245 | fs->lfs_doifile = 0; |
246 | fs->lfs_writer = 0; | |
247 | fs->lfs_dirops = 0; | |
0c0b26ec | 248 | fs->lfs_seglock = 0; |
3ce71481 | 249 | |
0b4d6502 | 250 | /* Set the file system readonly/modify bits. */ |
0b4d6502 | 251 | fs->lfs_ronly = ronly; |
71e4e98b | 252 | if (ronly == 0) |
0b4d6502 KB |
253 | fs->lfs_fmod = 1; |
254 | ||
255 | /* Initialize the mount structure. */ | |
256 | dev = devvp->v_rdev; | |
82161bc8 KM |
257 | mp->mnt_data = (qaddr_t)ump; |
258 | mp->mnt_stat.f_fsid.val[0] = (long)dev; | |
06ce3734 | 259 | mp->mnt_stat.f_fsid.val[1] = lfs_mount_type; |
b390cbb0 | 260 | mp->mnt_maxsymlinklen = fs->lfs_maxsymlinklen; |
82161bc8 | 261 | mp->mnt_flag |= MNT_LOCAL; |
7188ac27 KM |
262 | ump->um_mountp = mp; |
263 | ump->um_dev = dev; | |
264 | ump->um_devvp = devvp; | |
5e539b49 MS |
265 | ump->um_bptrtodb = 0; |
266 | ump->um_seqinc = 1 << fs->lfs_fsbtodb; | |
267 | ump->um_nindir = fs->lfs_nindir; | |
8dc876c1 KM |
268 | for (i = 0; i < MAXQUOTAS; i++) |
269 | ump->um_quotas[i] = NULLVP; | |
f9c367e8 | 270 | devvp->v_specflags |= SI_MOUNTEDON; |
7188ac27 | 271 | |
f9c367e8 KB |
272 | /* |
273 | * We use the ifile vnode for almost every operation. Instead of | |
274 | * retrieving it from the hash table each time we retrieve it here, | |
275 | * artificially increment the reference count and keep a pointer | |
276 | * to it in the incore copy of the superblock. | |
277 | */ | |
f7802306 | 278 | if (error = VFS_VGET(mp, LFS_IFILE_INUM, &vp)) |
0b4d6502 | 279 | goto out; |
0b4d6502 | 280 | fs->lfs_ivnode = vp; |
f9c367e8 KB |
281 | VREF(vp); |
282 | vput(vp); | |
0b4d6502 | 283 | |
609e7cfa | 284 | |
7188ac27 | 285 | return (0); |
71e4e98b | 286 | out: |
c86c9b6e KM |
287 | if (bp) |
288 | brelse(bp); | |
9f246d5e | 289 | (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, cred, p); |
8dc876c1 | 290 | if (ump) { |
ece51ee9 | 291 | free(ump->um_lfs, M_UFSMNT); |
d9f5f868 | 292 | free(ump, M_UFSMNT); |
82161bc8 | 293 | mp->mnt_data = (qaddr_t)0; |
27d00e76 | 294 | } |
7188ac27 | 295 | return (error); |
71e4e98b SL |
296 | } |
297 | ||
7188ac27 KM |
298 | /* |
299 | * unmount system call | |
300 | */ | |
0b4d6502 | 301 | lfs_unmount(mp, mntflags, p) |
7188ac27 | 302 | struct mount *mp; |
8dc876c1 | 303 | int mntflags; |
0eb6f54a | 304 | struct proc *p; |
71e4e98b | 305 | { |
d9f5f868 | 306 | extern int doforce; |
7188ac27 | 307 | register struct ufsmount *ump; |
0c0b26ec | 308 | register struct lfs *fs; |
f7802306 | 309 | int i, error, flags, ronly; |
71e4e98b | 310 | |
f7802306 | 311 | flags = 0; |
87be6db2 | 312 | if (mntflags & MNT_FORCE) { |
eb49bed5 | 313 | if (!doforce || (mp->mnt_flag & MNT_ROOTFS)) |
87be6db2 | 314 | return (EINVAL); |
8dc876c1 | 315 | flags |= FORCECLOSE; |
87be6db2 | 316 | } |
3ce71481 | 317 | |
7188ac27 | 318 | ump = VFSTOUFS(mp); |
3ce71481 | 319 | fs = ump->um_lfs; |
ec67a3ce | 320 | return (error); |
71e4e98b | 321 | #ifdef QUOTA |
82161bc8 | 322 | if (mp->mnt_flag & MNT_QUOTA) { |
3ce71481 | 323 | if (error = vflush(mp, fs->lfs_ivnode, SKIPSYSTEM|flags)) |
6d943995 | 324 | return (error); |
8dc876c1 KM |
325 | for (i = 0; i < MAXQUOTAS; i++) { |
326 | if (ump->um_quotas[i] == NULLVP) | |
327 | continue; | |
70a360ba | 328 | quotaoff(p, mp, i); |
8dc876c1 | 329 | } |
6d943995 | 330 | /* |
8dc876c1 KM |
331 | * Here we fall through to vflush again to ensure |
332 | * that we have gotten rid of all the system vnodes. | |
6d943995 | 333 | */ |
8dc876c1 | 334 | } |
71e4e98b | 335 | #endif |
f7802306 | 336 | if (error = vflush(mp, fs->lfs_ivnode, flags)) |
6d943995 | 337 | return (error); |
0c0b26ec | 338 | fs->lfs_clean = 1; |
f7802306 KB |
339 | if (error = VFS_SYNC(mp, 1, p->p_ucred, p)) |
340 | return (error); | |
eb49bed5 | 341 | if (fs->lfs_ivnode->v_dirtyblkhd.lh_first) |
f7802306 | 342 | panic("lfs_unmount: still dirty blocks on ifile vnode\n"); |
4c9381d8 | 343 | vrele(fs->lfs_ivnode); |
f7802306 KB |
344 | vgone(fs->lfs_ivnode); |
345 | ||
0b4d6502 | 346 | ronly = !fs->lfs_ronly; |
7188ac27 KM |
347 | * Get file system statistics. |
348 | */ | |
0b4d6502 | 349 | lfs_statfs(mp, sbp, p) |
7188ac27 KM |
350 | struct mount *mp; |
351 | register struct statfs *sbp; | |
0eb6f54a | 352 | struct proc *p; |
7188ac27 | 353 | { |
d9f5f868 | 354 | register struct lfs *fs; |
7188ac27 | 355 | register struct ufsmount *ump; |
7188ac27 KM |
356 | |
357 | ump = VFSTOUFS(mp); | |
0b4d6502 KB |
358 | fs = ump->um_lfs; |
359 | if (fs->lfs_magic != LFS_MAGIC) | |
360 | panic("lfs_statfs: magic"); | |
0b4d6502 | 361 | sbp->f_bsize = fs->lfs_bsize; |
cc173077 | 362 | sbp->f_iosize = fs->lfs_bsize; |
4d3cf006 | 363 | sbp->f_blocks = dbtofsb(fs,fs->lfs_dsize); |
435a74c9 | 364 | sbp->f_bfree = dbtofsb(fs, fs->lfs_bfree); |
0b4d6502 | 365 | sbp->f_bavail = (fs->lfs_dsize * (100 - fs->lfs_minfree) / 100) - |
76353702 | 366 | (fs->lfs_dsize - fs->lfs_bfree); |
4d3cf006 | 367 | sbp->f_bavail = dbtofsb(fs, sbp->f_bavail); |
0b4d6502 | 368 | sbp->f_files = fs->lfs_nfiles; |
435a74c9 | 369 | sbp->f_ffree = sbp->f_bfree * INOPB(fs); |
82161bc8 | 370 | if (sbp != &mp->mnt_stat) { |
06ce3734 | 371 | sbp->f_type = mp->mnt_vfc->vfc_typenum; |
82161bc8 | 372 | bcopy((caddr_t)mp->mnt_stat.f_mntonname, |
d45de50d | 373 | (caddr_t)&sbp->f_mntonname[0], MNAMELEN); |
82161bc8 | 374 | bcopy((caddr_t)mp->mnt_stat.f_mntfromname, |
d45de50d KM |
375 | (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); |
376 | } | |
7188ac27 KM |
377 | return (0); |
378 | } | |
379 | ||
7188ac27 KM |
380 | /* |
381 | * Go through the disk queues to initiate sandbagged IO; | |
382 | * go through the inodes to write those that have been modified; | |
383 | * initiate the writing of the super block if it has been modified. | |
8dc876c1 KM |
384 | * |
385 | * Note: we are always called with the filesystem marked `MPBUSY'. | |
7188ac27 | 386 | */ |
f7802306 | 387 | lfs_sync(mp, waitfor, cred, p) |
71e4e98b | 388 | struct mount *mp; |
7188ac27 | 389 | int waitfor; |
f7802306 KB |
390 | struct ucred *cred; |
391 | struct proc *p; | |
71e4e98b | 392 | { |
275ca4f0 | 393 | int error; |
7188ac27 | 394 | |
c9cbb645 | 395 | /* All syncs must be checkpoints until roll-forward is implemented. */ |
d2495626 | 396 | error = lfs_segwrite(mp, SEGM_CKP | (waitfor ? SEGM_SYNC : 0)); |
8dc876c1 KM |
397 | #ifdef QUOTA |
398 | qsync(mp); | |
399 | #endif | |
275ca4f0 | 400 | return (error); |
7188ac27 | 401 | } |
b16ed5f4 | 402 | |
f7802306 KB |
403 | /* |
404 | * Look up an LFS dinode number to find its incore vnode. If not already | |
405 | * in core, read it in from the specified device. Return the inode locked. | |
406 | * Detection and handling of mount points must be done by the calling routine. | |
407 | */ | |
408 | int | |
409 | lfs_vget(mp, ino, vpp) | |
410 | struct mount *mp; | |
411 | ino_t ino; | |
412 | struct vnode **vpp; | |
413 | { | |
414 | register struct lfs *fs; | |
415 | register struct inode *ip; | |
416 | struct buf *bp; | |
417 | struct ifile *ifp; | |
418 | struct vnode *vp; | |
419 | struct ufsmount *ump; | |
89e2bb79 | 420 | ufs_daddr_t daddr; |
f7802306 KB |
421 | dev_t dev; |
422 | int error; | |
423 | ||
f7802306 KB |
424 | ump = VFSTOUFS(mp); |
425 | dev = ump->um_dev; | |
426 | if ((*vpp = ufs_ihashget(dev, ino)) != NULL) | |
427 | return (0); | |
428 | ||
429 | /* Translate the inode number to a disk address. */ | |
430 | fs = ump->um_lfs; | |
431 | if (ino == LFS_IFILE_INUM) | |
432 | daddr = fs->lfs_idaddr; | |
433 | else { | |
434 | LFS_IENTRY(ifp, fs, ino, bp); | |
435 | daddr = ifp->if_daddr; | |
436 | brelse(bp); | |
437 | if (daddr == LFS_UNUSED_DADDR) | |
438 | return (ENOENT); | |
439 | } | |
440 | ||
441 | /* Allocate new vnode/inode. */ | |
442 | if (error = lfs_vcreate(mp, ino, &vp)) { | |
443 | *vpp = NULL; | |
444 | return (error); | |
445 | } | |
446 | ||
447 | /* | |
448 | * Put it onto its hash chain and lock it so that other requests for | |
449 | * this inode will block if they arrive while we are sleeping waiting | |
450 | * for old data structures to be purged or for the contents of the | |
451 | * disk portion of this inode to be read. | |
452 | */ | |
453 | ip = VTOI(vp); | |
454 | ufs_ihashins(ip); | |
455 | ||
456 | /* | |
457 | * XXX | |
458 | * This may not need to be here, logically it should go down with | |
459 | * the i_devvp initialization. | |
460 | * Ask Kirk. | |
461 | */ | |
462 | ip->i_lfs = ump->um_lfs; | |
463 | ||
464 | /* Read in the disk contents for the inode, copy into the inode. */ | |
465 | if (error = | |
466 | bread(ump->um_devvp, daddr, (int)fs->lfs_bsize, NOCRED, &bp)) { | |
467 | /* | |
f345d060 KM |
468 | * The inode does not contain anything useful, so it would |
469 | * be misleading to leave it on its hash chain. With mode | |
470 | * still zero, it will be unlinked and returned to the free | |
471 | * list by vput(). | |
f7802306 | 472 | */ |
eca11e88 | 473 | vput(vp); |
f7802306 KB |
474 | brelse(bp); |
475 | *vpp = NULL; | |
476 | return (error); | |
477 | } | |
cb84e0ab | 478 | ip->i_din = *lfs_ifind(fs, ino, (struct dinode *)bp->b_data); |
f7802306 KB |
479 | brelse(bp); |
480 | ||
481 | /* | |
482 | * Initialize the vnode from the inode, check for aliases. In all | |
483 | * cases re-init ip, the underlying vnode/inode may have changed. | |
484 | */ | |
485 | if (error = ufs_vinit(mp, lfs_specop_p, LFS_FIFOOPS, &vp)) { | |
eca11e88 | 486 | vput(vp); |
f7802306 KB |
487 | *vpp = NULL; |
488 | return (error); | |
489 | } | |
490 | /* | |
491 | * Finish inode initialization now that aliasing has been resolved. | |
492 | */ | |
493 | ip->i_devvp = ump->um_devvp; | |
494 | VREF(ip->i_devvp); | |
495 | *vpp = vp; | |
496 | return (0); | |
497 | } | |
498 | ||
b16ed5f4 KM |
499 | /* |
500 | * File handle to vnode | |
501 | * | |
502 | * Have to be really careful about stale file handles: | |
503 | * - check that the inode number is valid | |
504 | * - call lfs_vget() to get the locked inode | |
505 | * - check for an unallocated inode (i_mode == 0) | |
9e4a3a4a KM |
506 | * - check that the given client host has export rights and return |
507 | * those rights via. exflagsp and credanonp | |
b16ed5f4 KM |
508 | * |
509 | * XXX | |
510 | * use ifile to see if inode is allocated instead of reading off disk | |
511 | * what is the relationship between my generational number and the NFS | |
512 | * generational number. | |
513 | */ | |
514 | int | |
3a0a9bdc | 515 | lfs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp) |
b16ed5f4 KM |
516 | register struct mount *mp; |
517 | struct fid *fhp; | |
3a0a9bdc | 518 | struct mbuf *nam; |
b16ed5f4 | 519 | struct vnode **vpp; |
3a0a9bdc KM |
520 | int *exflagsp; |
521 | struct ucred **credanonp; | |
b16ed5f4 | 522 | { |
b16ed5f4 | 523 | register struct ufid *ufhp; |
b16ed5f4 KM |
524 | |
525 | ufhp = (struct ufid *)fhp; | |
526 | if (ufhp->ufid_ino < ROOTINO) | |
3a0a9bdc | 527 | return (ESTALE); |
485cf2ee | 528 | return (ufs_check_export(mp, ufhp, nam, vpp, exflagsp, credanonp)); |
b16ed5f4 KM |
529 | } |
530 | ||
531 | /* | |
532 | * Vnode pointer to File handle | |
533 | */ | |
534 | /* ARGSUSED */ | |
535 | lfs_vptofh(vp, fhp) | |
536 | struct vnode *vp; | |
537 | struct fid *fhp; | |
538 | { | |
539 | register struct inode *ip; | |
540 | register struct ufid *ufhp; | |
541 | ||
542 | ip = VTOI(vp); | |
543 | ufhp = (struct ufid *)fhp; | |
544 | ufhp->ufid_len = sizeof(struct ufid); | |
545 | ufhp->ufid_ino = ip->i_number; | |
546 | ufhp->ufid_gen = ip->i_gen; | |
547 | return (0); | |
548 | } | |
06ce3734 KM |
549 | |
550 | /* | |
551 | * Initialize the filesystem, most work done by ufs_init. | |
552 | */ | |
553 | int lfs_mount_type; | |
554 | ||
555 | int | |
556 | lfs_init(vfsp) | |
557 | struct vfsconf *vfsp; | |
558 | { | |
559 | ||
560 | lfs_mount_type = vfsp->vfc_typenum; | |
561 | return (ufs_init(vfsp)); | |
562 | } |