Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
190244fb | 2 | * Copyright (c) 1989, 1991 The Regents of the University of California. |
7188ac27 | 3 | * All rights reserved. |
da7c5cc6 | 4 | * |
b702c21d | 5 | * %sccs.include.redist.c% |
7188ac27 | 6 | * |
eca11e88 | 7 | * @(#)lfs_vfsops.c 7.88 (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, |
b16ed5f4 | 45 | lfs_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, |
7188ac27 KM |
53 | }; |
54 | ||
c7e94c3a | 55 | int |
0b4d6502 | 56 | lfs_mountroot() |
71e4e98b | 57 | { |
c7e94c3a | 58 | panic("lfs_mountroot"); /* XXX -- implement */ |
7188ac27 KM |
59 | } |
60 | ||
61 | /* | |
62 | * VFS Operations. | |
63 | * | |
64 | * mount system call | |
65 | */ | |
0b4d6502 | 66 | lfs_mount(mp, path, data, ndp, p) |
d45de50d | 67 | register struct mount *mp; |
7188ac27 KM |
68 | char *path; |
69 | caddr_t data; | |
70 | struct nameidata *ndp; | |
0eb6f54a | 71 | struct proc *p; |
7188ac27 KM |
72 | { |
73 | struct vnode *devvp; | |
74 | struct ufs_args args; | |
75 | struct ufsmount *ump; | |
d9f5f868 | 76 | register struct lfs *fs; /* LFS */ |
7188ac27 KM |
77 | u_int size; |
78 | int error; | |
79 | ||
80 | if (error = copyin(data, (caddr_t)&args, sizeof (struct ufs_args))) | |
81 | return (error); | |
c7e94c3a KB |
82 | |
83 | /* Until LFS can do NFS right. XXX */ | |
84 | if (args.exflags & MNT_EXPORTED) | |
85 | return (EINVAL); | |
190244fb MK |
86 | /* |
87 | * If updating, check whether changing from read-only to | |
88 | * read/write; if there is no device name, that's all we do. | |
89 | */ | |
90 | if (mp->mnt_flag & MNT_UPDATE) { | |
d48157d5 | 91 | ump = VFSTOUFS(mp); |
0b4d6502 | 92 | #ifdef NOTLFS /* LFS */ |
d48157d5 | 93 | fs = ump->um_fs; |
82161bc8 | 94 | if (fs->fs_ronly && (mp->mnt_flag & MNT_RDONLY) == 0) |
d48157d5 | 95 | fs->fs_ronly = 0; |
0b4d6502 KB |
96 | #else |
97 | fs = ump->um_lfs; | |
98 | if (fs->lfs_ronly && (mp->mnt_flag & MNT_RDONLY) == 0) | |
99 | fs->lfs_ronly = 0; | |
100 | #endif | |
64583792 KM |
101 | if (args.fspec == 0) { |
102 | /* | |
103 | * Process export requests. | |
104 | */ | |
105 | if (args.exflags & MNT_EXPORTED) { | |
f7802306 | 106 | if (error = ufs_hang_addrlist(mp, &args)) |
64583792 KM |
107 | return (error); |
108 | mp->mnt_flag |= MNT_EXPORTED; | |
109 | } | |
110 | if (args.exflags & MNT_DELEXPORT) { | |
f7802306 | 111 | ufs_free_addrlist(ump); |
64583792 KM |
112 | mp->mnt_flag &= |
113 | ~(MNT_EXPORTED | MNT_DEFEXPORTED); | |
114 | } | |
3b931949 | 115 | return (0); |
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 | } | |
134 | if ((mp->mnt_flag & MNT_UPDATE) == 0) | |
0b4d6502 | 135 | error = lfs_mountfs(devvp, mp, p); /* LFS */ |
190244fb | 136 | else { |
d48157d5 KM |
137 | if (devvp != ump->um_devvp) |
138 | error = EINVAL; /* needs translation */ | |
2a7dbb09 KM |
139 | else |
140 | vrele(devvp); | |
d48157d5 | 141 | } |
7188ac27 KM |
142 | if (error) { |
143 | vrele(devvp); | |
144 | return (error); | |
27d00e76 | 145 | } |
7188ac27 | 146 | ump = VFSTOUFS(mp); |
0b4d6502 KB |
147 | fs = ump->um_lfs; /* LFS */ |
148 | #ifdef NOTLFS /* LFS */ | |
7188ac27 KM |
149 | (void) copyinstr(path, fs->fs_fsmnt, sizeof(fs->fs_fsmnt) - 1, &size); |
150 | bzero(fs->fs_fsmnt + size, sizeof(fs->fs_fsmnt) - size); | |
82161bc8 KM |
151 | bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, |
152 | MNAMELEN); | |
79a0d4bf | 153 | (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, |
82161bc8 KM |
154 | &size); |
155 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
0eb6f54a | 156 | (void) ufs_statfs(mp, &mp->mnt_stat, p); |
0b4d6502 KB |
157 | #else |
158 | (void)copyinstr(path, fs->lfs_fsmnt, sizeof(fs->lfs_fsmnt) - 1, &size); | |
159 | bzero(fs->lfs_fsmnt + size, sizeof(fs->lfs_fsmnt) - size); | |
160 | bcopy((caddr_t)fs->lfs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, | |
161 | MNAMELEN); | |
79a0d4bf | 162 | (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, |
0b4d6502 KB |
163 | &size); |
164 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
165 | (void) lfs_statfs(mp, &mp->mnt_stat, p); | |
166 | #endif | |
7188ac27 | 167 | return (0); |
71e4e98b SL |
168 | } |
169 | ||
7188ac27 KM |
170 | /* |
171 | * Common code for mount and mountroot | |
0b4d6502 | 172 | * LFS specific |
7188ac27 | 173 | */ |
79a0d4bf | 174 | int |
0b4d6502 | 175 | lfs_mountfs(devvp, mp, p) |
1182ae61 | 176 | register struct vnode *devvp; |
7188ac27 | 177 | struct mount *mp; |
0eb6f54a | 178 | struct proc *p; |
71e4e98b | 179 | { |
1c26e003 | 180 | extern struct vnode *rootvp; |
d9f5f868 | 181 | register struct lfs *fs; |
0b4d6502 | 182 | register struct ufsmount *ump; |
0b4d6502 KB |
183 | struct vnode *vp; |
184 | struct buf *bp; | |
185 | struct partinfo dpart; | |
0b4d6502 KB |
186 | dev_t dev; |
187 | int error, i, ronly, size; | |
71e4e98b | 188 | |
0eb6f54a | 189 | if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p)) |
7188ac27 | 190 | return (error); |
0b4d6502 | 191 | |
0eb6f54a | 192 | if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, NOCRED, p) != 0) |
609e7cfa | 193 | size = DEV_BSIZE; |
0eb6f54a | 194 | else { |
ec67a3ce | 195 | size = dpart.disklab->d_secsize; |
0b4d6502 KB |
196 | #ifdef NEVER_USED |
197 | dpart.part->p_fstype = FS_LFS; | |
198 | dpart.part->p_fsize = fs->lfs_fsize; /* frag size */ | |
199 | dpart.part->p_frag = fs->lfs_frag; /* frags per block */ | |
200 | dpart.part->p_cpg = fs->lfs_segshift; /* segment shift */ | |
201 | #endif | |
7188ac27 | 202 | } |
0b4d6502 KB |
203 | |
204 | /* Don't free random space on error. */ | |
205 | bp = NULL; | |
206 | ump = NULL; | |
207 | ||
208 | /* Read in the superblock. */ | |
209 | if (error = bread(devvp, LFS_LABELPAD / size, LFS_SBPAD, NOCRED, &bp)) | |
71e4e98b | 210 | goto out; |
8dc876c1 | 211 | error = EINVAL; /* XXX needs translation */ |
1c281610 MK |
212 | goto out; |
213 | } | |
0b4d6502 | 214 | #ifdef DEBUG |
c7e94c3a | 215 | lfs_dump_super(fs); |
0b4d6502 KB |
216 | #endif |
217 | ||
218 | /* Allocate the mount structure, copy the superblock into it. */ | |
8dc876c1 | 219 | ump = (struct ufsmount *)malloc(sizeof *ump, M_UFSMNT, M_WAITOK); |
0c0b26ec KB |
220 | fs = ump->um_lfs = malloc(sizeof(struct lfs), M_UFSMNT, M_WAITOK); |
221 | bcopy(bp->b_un.b_addr, fs, sizeof(struct lfs)); | |
d9f5f868 | 222 | if (sizeof(struct lfs) < LFS_SBPAD) /* XXX why? */ |
5d96a9ad | 223 | bp->b_flags |= B_INVAL; |
e018935f MK |
224 | brelse(bp); |
225 | bp = NULL; | |
0b4d6502 | 226 | |
d5075120 KB |
227 | /* Set up the I/O information */ |
228 | fs->lfs_iocount = 0; | |
d5075120 | 229 | |
0c0b26ec | 230 | /* Set up the ifile and lock aflags */ |
3ce71481 KB |
231 | fs->lfs_doifile = 0; |
232 | fs->lfs_writer = 0; | |
233 | fs->lfs_dirops = 0; | |
0c0b26ec | 234 | fs->lfs_seglock = 0; |
3ce71481 | 235 | |
0b4d6502 | 236 | /* Set the file system readonly/modify bits. */ |
0b4d6502 | 237 | fs->lfs_ronly = ronly; |
71e4e98b | 238 | if (ronly == 0) |
0b4d6502 KB |
239 | fs->lfs_fmod = 1; |
240 | ||
241 | /* Initialize the mount structure. */ | |
242 | dev = devvp->v_rdev; | |
82161bc8 KM |
243 | mp->mnt_data = (qaddr_t)ump; |
244 | mp->mnt_stat.f_fsid.val[0] = (long)dev; | |
79a0d4bf | 245 | mp->mnt_stat.f_fsid.val[1] = MOUNT_LFS; |
82161bc8 | 246 | mp->mnt_flag |= MNT_LOCAL; |
7188ac27 KM |
247 | ump->um_mountp = mp; |
248 | ump->um_dev = dev; | |
249 | ump->um_devvp = devvp; | |
5e539b49 MS |
250 | ump->um_bptrtodb = 0; |
251 | ump->um_seqinc = 1 << fs->lfs_fsbtodb; | |
252 | ump->um_nindir = fs->lfs_nindir; | |
8dc876c1 KM |
253 | for (i = 0; i < MAXQUOTAS; i++) |
254 | ump->um_quotas[i] = NULLVP; | |
f9c367e8 | 255 | devvp->v_specflags |= SI_MOUNTEDON; |
7188ac27 | 256 | |
f9c367e8 KB |
257 | /* |
258 | * We use the ifile vnode for almost every operation. Instead of | |
259 | * retrieving it from the hash table each time we retrieve it here, | |
260 | * artificially increment the reference count and keep a pointer | |
261 | * to it in the incore copy of the superblock. | |
262 | */ | |
f7802306 | 263 | if (error = VFS_VGET(mp, LFS_IFILE_INUM, &vp)) |
0b4d6502 | 264 | goto out; |
0b4d6502 | 265 | fs->lfs_ivnode = vp; |
f9c367e8 KB |
266 | VREF(vp); |
267 | vput(vp); | |
0b4d6502 | 268 | |
609e7cfa | 269 | |
7188ac27 | 270 | return (0); |
71e4e98b | 271 | out: |
c86c9b6e KM |
272 | if (bp) |
273 | brelse(bp); | |
0b4d6502 | 274 | (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p); |
8dc876c1 | 275 | if (ump) { |
ece51ee9 | 276 | free(ump->um_lfs, M_UFSMNT); |
d9f5f868 | 277 | free(ump, M_UFSMNT); |
82161bc8 | 278 | mp->mnt_data = (qaddr_t)0; |
27d00e76 | 279 | } |
7188ac27 | 280 | return (error); |
71e4e98b SL |
281 | } |
282 | ||
7188ac27 KM |
283 | /* |
284 | * unmount system call | |
285 | */ | |
0b4d6502 | 286 | lfs_unmount(mp, mntflags, p) |
7188ac27 | 287 | struct mount *mp; |
8dc876c1 | 288 | int mntflags; |
0eb6f54a | 289 | struct proc *p; |
71e4e98b | 290 | { |
d9f5f868 | 291 | extern int doforce; |
7188ac27 | 292 | register struct ufsmount *ump; |
0c0b26ec | 293 | register struct lfs *fs; |
f7802306 | 294 | int i, error, flags, ronly; |
71e4e98b | 295 | |
f7802306 | 296 | flags = 0; |
87be6db2 | 297 | if (mntflags & MNT_FORCE) { |
d85a9d1b | 298 | if (!doforce || mp == rootfs) |
87be6db2 | 299 | return (EINVAL); |
8dc876c1 | 300 | flags |= FORCECLOSE; |
87be6db2 | 301 | } |
3ce71481 | 302 | |
7188ac27 | 303 | ump = VFSTOUFS(mp); |
3ce71481 | 304 | fs = ump->um_lfs; |
ec67a3ce | 305 | return (error); |
71e4e98b | 306 | #ifdef QUOTA |
82161bc8 | 307 | if (mp->mnt_flag & MNT_QUOTA) { |
3ce71481 | 308 | if (error = vflush(mp, fs->lfs_ivnode, SKIPSYSTEM|flags)) |
6d943995 | 309 | return (error); |
8dc876c1 KM |
310 | for (i = 0; i < MAXQUOTAS; i++) { |
311 | if (ump->um_quotas[i] == NULLVP) | |
312 | continue; | |
70a360ba | 313 | quotaoff(p, mp, i); |
8dc876c1 | 314 | } |
6d943995 | 315 | /* |
8dc876c1 KM |
316 | * Here we fall through to vflush again to ensure |
317 | * that we have gotten rid of all the system vnodes. | |
6d943995 | 318 | */ |
8dc876c1 | 319 | } |
71e4e98b | 320 | #endif |
f7802306 | 321 | if (error = vflush(mp, fs->lfs_ivnode, flags)) |
6d943995 | 322 | return (error); |
0c0b26ec | 323 | fs->lfs_clean = 1; |
f7802306 KB |
324 | if (error = VFS_SYNC(mp, 1, p->p_ucred, p)) |
325 | return (error); | |
5e539b49 | 326 | if (fs->lfs_ivnode->v_dirtyblkhd.le_next) |
f7802306 | 327 | panic("lfs_unmount: still dirty blocks on ifile vnode\n"); |
4c9381d8 | 328 | vrele(fs->lfs_ivnode); |
f7802306 KB |
329 | vgone(fs->lfs_ivnode); |
330 | ||
0b4d6502 | 331 | ronly = !fs->lfs_ronly; |
7188ac27 KM |
332 | * Get file system statistics. |
333 | */ | |
0b4d6502 | 334 | lfs_statfs(mp, sbp, p) |
7188ac27 KM |
335 | struct mount *mp; |
336 | register struct statfs *sbp; | |
0eb6f54a | 337 | struct proc *p; |
7188ac27 | 338 | { |
d9f5f868 | 339 | register struct lfs *fs; |
7188ac27 | 340 | register struct ufsmount *ump; |
7188ac27 KM |
341 | |
342 | ump = VFSTOUFS(mp); | |
0b4d6502 KB |
343 | fs = ump->um_lfs; |
344 | if (fs->lfs_magic != LFS_MAGIC) | |
345 | panic("lfs_statfs: magic"); | |
346 | sbp->f_type = MOUNT_LFS; | |
0b4d6502 | 347 | sbp->f_bsize = fs->lfs_bsize; |
cc173077 | 348 | sbp->f_iosize = fs->lfs_bsize; |
4d3cf006 | 349 | sbp->f_blocks = dbtofsb(fs,fs->lfs_dsize); |
435a74c9 | 350 | sbp->f_bfree = dbtofsb(fs, fs->lfs_bfree); |
0b4d6502 | 351 | sbp->f_bavail = (fs->lfs_dsize * (100 - fs->lfs_minfree) / 100) - |
76353702 | 352 | (fs->lfs_dsize - fs->lfs_bfree); |
4d3cf006 | 353 | sbp->f_bavail = dbtofsb(fs, sbp->f_bavail); |
0b4d6502 | 354 | sbp->f_files = fs->lfs_nfiles; |
435a74c9 | 355 | sbp->f_ffree = sbp->f_bfree * INOPB(fs); |
82161bc8 KM |
356 | if (sbp != &mp->mnt_stat) { |
357 | bcopy((caddr_t)mp->mnt_stat.f_mntonname, | |
d45de50d | 358 | (caddr_t)&sbp->f_mntonname[0], MNAMELEN); |
82161bc8 | 359 | bcopy((caddr_t)mp->mnt_stat.f_mntfromname, |
d45de50d KM |
360 | (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); |
361 | } | |
7188ac27 KM |
362 | return (0); |
363 | } | |
364 | ||
7188ac27 KM |
365 | /* |
366 | * Go through the disk queues to initiate sandbagged IO; | |
367 | * go through the inodes to write those that have been modified; | |
368 | * initiate the writing of the super block if it has been modified. | |
8dc876c1 KM |
369 | * |
370 | * Note: we are always called with the filesystem marked `MPBUSY'. | |
7188ac27 | 371 | */ |
f7802306 | 372 | lfs_sync(mp, waitfor, cred, p) |
71e4e98b | 373 | struct mount *mp; |
7188ac27 | 374 | int waitfor; |
f7802306 KB |
375 | struct ucred *cred; |
376 | struct proc *p; | |
71e4e98b | 377 | { |
4c9381d8 | 378 | extern int syncprt; |
275ca4f0 | 379 | int error; |
7188ac27 | 380 | |
c9cbb645 | 381 | /* All syncs must be checkpoints until roll-forward is implemented. */ |
79a0d4bf | 382 | error = lfs_segwrite(mp, 1); |
8dc876c1 KM |
383 | #ifdef QUOTA |
384 | qsync(mp); | |
385 | #endif | |
275ca4f0 | 386 | return (error); |
7188ac27 | 387 | } |
b16ed5f4 | 388 | |
f7802306 KB |
389 | /* |
390 | * Look up an LFS dinode number to find its incore vnode. If not already | |
391 | * in core, read it in from the specified device. Return the inode locked. | |
392 | * Detection and handling of mount points must be done by the calling routine. | |
393 | */ | |
394 | int | |
395 | lfs_vget(mp, ino, vpp) | |
396 | struct mount *mp; | |
397 | ino_t ino; | |
398 | struct vnode **vpp; | |
399 | { | |
400 | register struct lfs *fs; | |
401 | register struct inode *ip; | |
402 | struct buf *bp; | |
403 | struct ifile *ifp; | |
404 | struct vnode *vp; | |
405 | struct ufsmount *ump; | |
406 | daddr_t daddr; | |
407 | dev_t dev; | |
408 | int error; | |
409 | ||
f7802306 KB |
410 | ump = VFSTOUFS(mp); |
411 | dev = ump->um_dev; | |
412 | if ((*vpp = ufs_ihashget(dev, ino)) != NULL) | |
413 | return (0); | |
414 | ||
415 | /* Translate the inode number to a disk address. */ | |
416 | fs = ump->um_lfs; | |
417 | if (ino == LFS_IFILE_INUM) | |
418 | daddr = fs->lfs_idaddr; | |
419 | else { | |
420 | LFS_IENTRY(ifp, fs, ino, bp); | |
421 | daddr = ifp->if_daddr; | |
422 | brelse(bp); | |
423 | if (daddr == LFS_UNUSED_DADDR) | |
424 | return (ENOENT); | |
425 | } | |
426 | ||
427 | /* Allocate new vnode/inode. */ | |
428 | if (error = lfs_vcreate(mp, ino, &vp)) { | |
429 | *vpp = NULL; | |
430 | return (error); | |
431 | } | |
432 | ||
433 | /* | |
434 | * Put it onto its hash chain and lock it so that other requests for | |
435 | * this inode will block if they arrive while we are sleeping waiting | |
436 | * for old data structures to be purged or for the contents of the | |
437 | * disk portion of this inode to be read. | |
438 | */ | |
439 | ip = VTOI(vp); | |
440 | ufs_ihashins(ip); | |
441 | ||
442 | /* | |
443 | * XXX | |
444 | * This may not need to be here, logically it should go down with | |
445 | * the i_devvp initialization. | |
446 | * Ask Kirk. | |
447 | */ | |
448 | ip->i_lfs = ump->um_lfs; | |
449 | ||
450 | /* Read in the disk contents for the inode, copy into the inode. */ | |
451 | if (error = | |
452 | bread(ump->um_devvp, daddr, (int)fs->lfs_bsize, NOCRED, &bp)) { | |
453 | /* | |
454 | * The inode does not contain anything useful, so it | |
455 | * would be misleading to leave it on its hash chain. | |
456 | * Iput() will return it to the free list. | |
457 | */ | |
af9ac048 | 458 | ufs_ihashrem(ip); |
f7802306 KB |
459 | |
460 | /* Unlock and discard unneeded inode. */ | |
eca11e88 | 461 | vput(vp); |
f7802306 KB |
462 | brelse(bp); |
463 | *vpp = NULL; | |
464 | return (error); | |
465 | } | |
466 | ip->i_din = *lfs_ifind(fs, ino, bp->b_un.b_dino); | |
467 | brelse(bp); | |
468 | ||
469 | /* | |
470 | * Initialize the vnode from the inode, check for aliases. In all | |
471 | * cases re-init ip, the underlying vnode/inode may have changed. | |
472 | */ | |
473 | if (error = ufs_vinit(mp, lfs_specop_p, LFS_FIFOOPS, &vp)) { | |
eca11e88 | 474 | vput(vp); |
f7802306 KB |
475 | *vpp = NULL; |
476 | return (error); | |
477 | } | |
478 | /* | |
479 | * Finish inode initialization now that aliasing has been resolved. | |
480 | */ | |
481 | ip->i_devvp = ump->um_devvp; | |
482 | VREF(ip->i_devvp); | |
483 | *vpp = vp; | |
484 | return (0); | |
485 | } | |
486 | ||
b16ed5f4 KM |
487 | /* |
488 | * File handle to vnode | |
489 | * | |
490 | * Have to be really careful about stale file handles: | |
491 | * - check that the inode number is valid | |
492 | * - call lfs_vget() to get the locked inode | |
493 | * - check for an unallocated inode (i_mode == 0) | |
9e4a3a4a KM |
494 | * - check that the given client host has export rights and return |
495 | * those rights via. exflagsp and credanonp | |
b16ed5f4 KM |
496 | * |
497 | * XXX | |
498 | * use ifile to see if inode is allocated instead of reading off disk | |
499 | * what is the relationship between my generational number and the NFS | |
500 | * generational number. | |
501 | */ | |
502 | int | |
3a0a9bdc | 503 | lfs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp) |
b16ed5f4 KM |
504 | register struct mount *mp; |
505 | struct fid *fhp; | |
3a0a9bdc | 506 | struct mbuf *nam; |
b16ed5f4 | 507 | struct vnode **vpp; |
3a0a9bdc KM |
508 | int *exflagsp; |
509 | struct ucred **credanonp; | |
b16ed5f4 | 510 | { |
b16ed5f4 | 511 | register struct ufid *ufhp; |
b16ed5f4 KM |
512 | |
513 | ufhp = (struct ufid *)fhp; | |
514 | if (ufhp->ufid_ino < ROOTINO) | |
3a0a9bdc | 515 | return (ESTALE); |
485cf2ee | 516 | return (ufs_check_export(mp, ufhp, nam, vpp, exflagsp, credanonp)); |
b16ed5f4 KM |
517 | } |
518 | ||
519 | /* | |
520 | * Vnode pointer to File handle | |
521 | */ | |
522 | /* ARGSUSED */ | |
523 | lfs_vptofh(vp, fhp) | |
524 | struct vnode *vp; | |
525 | struct fid *fhp; | |
526 | { | |
527 | register struct inode *ip; | |
528 | register struct ufid *ufhp; | |
529 | ||
530 | ip = VTOI(vp); | |
531 | ufhp = (struct ufid *)fhp; | |
532 | ufhp->ufid_len = sizeof(struct ufid); | |
533 | ufhp->ufid_ino = ip->i_number; | |
534 | ufhp->ufid_gen = ip->i_gen; | |
535 | return (0); | |
536 | } |