Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
52ff95c2 | 2 | * Copyright (c) 1989, 1991, 1993, 1994 |
80409bdc | 3 | * The Regents of the University of California. All rights reserved. |
da7c5cc6 | 4 | * |
b702c21d | 5 | * %sccs.include.redist.c% |
7188ac27 | 6 | * |
075135be | 7 | * @(#)ffs_vfsops.c 8.14 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
71e4e98b | 9 | |
ab9f4fb0 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> | |
9e4a3a4a | 16 | #include <sys/socket.h> |
ab9f4fb0 KB |
17 | #include <sys/mount.h> |
18 | #include <sys/buf.h> | |
03f3a6e4 | 19 | #include <sys/mbuf.h> |
ab9f4fb0 KB |
20 | #include <sys/file.h> |
21 | #include <sys/disklabel.h> | |
22 | #include <sys/ioctl.h> | |
23 | #include <sys/errno.h> | |
24 | #include <sys/malloc.h> | |
41fc9770 KM |
25 | |
26 | #include <miscfs/specfs/specdev.h> | |
609e7cfa MK |
27 | #include "ioctl.h" |
28 | #include "disklabel.h" | |
29 | #include "stat.h" | |
71e4e98b | 30 | |
ab9f4fb0 KB |
31 | #include <ufs/ufs/quota.h> |
32 | #include <ufs/ufs/ufsmount.h> | |
33 | #include <ufs/ufs/inode.h> | |
34 | #include <ufs/ufs/ufs_extern.h> | |
35 | ||
36 | #include <ufs/ffs/fs.h> | |
37 | #include <ufs/ffs/ffs_extern.h> | |
38 | ||
06445aba | 39 | int ffs_sbupdate __P((struct ufsmount *, int)); |
c6f5111d | 40 | |
7188ac27 | 41 | struct vfsops ufs_vfsops = { |
ab9f4fb0 | 42 | ffs_mount, |
5bf9d21f | 43 | ufs_start, |
ab9f4fb0 | 44 | ffs_unmount, |
52ff95c2 | 45 | ufs_root, |
8dc876c1 | 46 | ufs_quotactl, |
ab9f4fb0 KB |
47 | ffs_statfs, |
48 | ffs_sync, | |
067ae075 | 49 | ffs_vget, |
a9013e03 KM |
50 | ffs_fhtovp, |
51 | ffs_vptofh, | |
ab9f4fb0 | 52 | ffs_init, |
7188ac27 KM |
53 | }; |
54 | ||
067ae075 KM |
55 | extern u_long nextgennumber; |
56 | ||
7188ac27 | 57 | /* |
4ac55ebc | 58 | * Called by main() when ufs is going to be mounted as root. |
7188ac27 | 59 | * |
d48157d5 | 60 | * Name is updated by mount(8) after booting. |
7188ac27 | 61 | */ |
8a4911ca | 62 | #define ROOTNAME "root_device" |
7188ac27 | 63 | |
ab9f4fb0 | 64 | ffs_mountroot() |
71e4e98b | 65 | { |
7188ac27 | 66 | extern struct vnode *rootvp; |
ab9f4fb0 KB |
67 | register struct fs *fs; |
68 | register struct mount *mp; | |
0eb6f54a | 69 | struct proc *p = curproc; /* XXX */ |
7188ac27 | 70 | struct ufsmount *ump; |
7188ac27 KM |
71 | u_int size; |
72 | int error; | |
751df505 KM |
73 | |
74 | /* | |
75 | * Get vnodes for swapdev and rootdev. | |
76 | */ | |
77 | if (bdevvp(swapdev, &swapdev_vp) || bdevvp(rootdev, &rootvp)) | |
78 | panic("ffs_mountroot: can't setup bdevvp's"); | |
71e4e98b | 79 | |
4ac55ebc | 80 | mp = malloc((u_long)sizeof(struct mount), M_MOUNT, M_WAITOK); |
ea301039 | 81 | bzero((char *)mp, (u_long)sizeof(struct mount)); |
82161bc8 KM |
82 | mp->mnt_op = &ufs_vfsops; |
83 | mp->mnt_flag = MNT_RDONLY; | |
ab9f4fb0 KB |
84 | if (error = ffs_mountfs(rootvp, mp, p)) { |
85 | free(mp, M_MOUNT); | |
7188ac27 | 86 | return (error); |
71e4e98b | 87 | } |
d48157d5 | 88 | if (error = vfs_lock(mp)) { |
ab9f4fb0 KB |
89 | (void)ffs_unmount(mp, 0, p); |
90 | free(mp, M_MOUNT); | |
7188ac27 | 91 | return (error); |
6d07f4cd | 92 | } |
c3627aa8 KM |
93 | TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list); |
94 | mp->mnt_flag |= MNT_ROOTFS; | |
82161bc8 | 95 | mp->mnt_vnodecovered = NULLVP; |
7188ac27 KM |
96 | ump = VFSTOUFS(mp); |
97 | fs = ump->um_fs; | |
d45de50d | 98 | bzero(fs->fs_fsmnt, sizeof(fs->fs_fsmnt)); |
7188ac27 | 99 | fs->fs_fsmnt[0] = '/'; |
82161bc8 KM |
100 | bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, |
101 | MNAMELEN); | |
102 | (void) copystr(ROOTNAME, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, | |
103 | &size); | |
104 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
ab9f4fb0 | 105 | (void)ffs_statfs(mp, &mp->mnt_stat, p); |
7188ac27 KM |
106 | vfs_unlock(mp); |
107 | inittodr(fs->fs_time); | |
108 | return (0); | |
109 | } | |
110 | ||
111 | /* | |
112 | * VFS Operations. | |
113 | * | |
114 | * mount system call | |
115 | */ | |
06445aba | 116 | int |
ab9f4fb0 | 117 | ffs_mount(mp, path, data, ndp, p) |
d45de50d | 118 | register struct mount *mp; |
7188ac27 KM |
119 | char *path; |
120 | caddr_t data; | |
121 | struct nameidata *ndp; | |
0eb6f54a | 122 | struct proc *p; |
7188ac27 KM |
123 | { |
124 | struct vnode *devvp; | |
125 | struct ufs_args args; | |
126 | struct ufsmount *ump; | |
127 | register struct fs *fs; | |
128 | u_int size; | |
a79eb26d | 129 | int error, flags; |
002e1eb0 | 130 | mode_t accessmode; |
7188ac27 KM |
131 | |
132 | if (error = copyin(data, (caddr_t)&args, sizeof (struct ufs_args))) | |
133 | return (error); | |
190244fb MK |
134 | /* |
135 | * If updating, check whether changing from read-only to | |
136 | * read/write; if there is no device name, that's all we do. | |
137 | */ | |
138 | if (mp->mnt_flag & MNT_UPDATE) { | |
d48157d5 KM |
139 | ump = VFSTOUFS(mp); |
140 | fs = ump->um_fs; | |
a79eb26d KM |
141 | error = 0; |
142 | if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) { | |
143 | flags = WRITECLOSE; | |
144 | if (mp->mnt_flag & MNT_FORCE) | |
145 | flags |= FORCECLOSE; | |
146 | if (vfs_busy(mp)) | |
147 | return (EBUSY); | |
148 | error = ffs_flushfiles(mp, flags, p); | |
149 | vfs_unbusy(mp); | |
150 | } | |
151 | if (!error && (mp->mnt_flag & MNT_RELOAD)) | |
152 | error = ffs_reload(mp, ndp->ni_cnd.cn_cred, p); | |
153 | if (error) | |
154 | return (error); | |
002e1eb0 KM |
155 | if (fs->fs_ronly && (mp->mnt_flag & MNT_WANTRDWR)) { |
156 | /* | |
157 | * If upgrade to read-write by non-root, then verify | |
158 | * that user has necessary permissions on the device. | |
159 | */ | |
160 | if (p->p_ucred->cr_uid != 0) { | |
161 | devvp = ump->um_devvp; | |
162 | VOP_LOCK(devvp); | |
163 | if (error = VOP_ACCESS(devvp, VREAD | VWRITE, | |
164 | p->p_ucred, p)) { | |
165 | VOP_UNLOCK(devvp); | |
166 | return (error); | |
167 | } | |
168 | VOP_UNLOCK(devvp); | |
169 | } | |
d48157d5 | 170 | fs->fs_ronly = 0; |
002e1eb0 | 171 | } |
c906fba1 KM |
172 | if (args.fspec == 0) { |
173 | /* | |
174 | * Process export requests. | |
175 | */ | |
6e31e5dc | 176 | return (vfs_export(mp, &ump->um_export, &args.export)); |
c906fba1 | 177 | } |
190244fb MK |
178 | } |
179 | /* | |
180 | * Not an update, or updating the name: look up the name | |
181 | * and verify that it refers to a sensible block device. | |
182 | */ | |
995e59df KM |
183 | NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); |
184 | if (error = namei(ndp)) | |
190244fb MK |
185 | return (error); |
186 | devvp = ndp->ni_vp; | |
ab9f4fb0 | 187 | |
190244fb MK |
188 | if (devvp->v_type != VBLK) { |
189 | vrele(devvp); | |
190 | return (ENOTBLK); | |
191 | } | |
192 | if (major(devvp->v_rdev) >= nblkdev) { | |
193 | vrele(devvp); | |
194 | return (ENXIO); | |
195 | } | |
002e1eb0 KM |
196 | /* |
197 | * If mount by non-root, then verify that user has necessary | |
198 | * permissions on the device. | |
199 | */ | |
200 | if (p->p_ucred->cr_uid != 0) { | |
201 | accessmode = VREAD; | |
202 | if ((mp->mnt_flag & MNT_RDONLY) == 0) | |
203 | accessmode |= VWRITE; | |
204 | VOP_LOCK(devvp); | |
205 | if (error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p)) { | |
206 | vput(devvp); | |
207 | return (error); | |
208 | } | |
209 | VOP_UNLOCK(devvp); | |
210 | } | |
190244fb | 211 | if ((mp->mnt_flag & MNT_UPDATE) == 0) |
ab9f4fb0 | 212 | error = ffs_mountfs(devvp, mp, p); |
190244fb | 213 | else { |
d48157d5 KM |
214 | if (devvp != ump->um_devvp) |
215 | error = EINVAL; /* needs translation */ | |
2a7dbb09 KM |
216 | else |
217 | vrele(devvp); | |
d48157d5 | 218 | } |
7188ac27 KM |
219 | if (error) { |
220 | vrele(devvp); | |
221 | return (error); | |
27d00e76 | 222 | } |
7188ac27 KM |
223 | ump = VFSTOUFS(mp); |
224 | fs = ump->um_fs; | |
225 | (void) copyinstr(path, fs->fs_fsmnt, sizeof(fs->fs_fsmnt) - 1, &size); | |
226 | bzero(fs->fs_fsmnt + size, sizeof(fs->fs_fsmnt) - size); | |
82161bc8 KM |
227 | bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, |
228 | MNAMELEN); | |
229 | (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, | |
230 | &size); | |
231 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
ab9f4fb0 | 232 | (void)ffs_statfs(mp, &mp->mnt_stat, p); |
7188ac27 | 233 | return (0); |
71e4e98b SL |
234 | } |
235 | ||
a79eb26d KM |
236 | /* |
237 | * Reload all incore data for a filesystem (used after running fsck on | |
238 | * the root filesystem and finding things to fix). The filesystem must | |
239 | * be mounted read-only. | |
240 | * | |
241 | * Things to do to update the mount: | |
242 | * 1) invalidate all cached meta-data. | |
243 | * 2) re-read superblock from disk. | |
244 | * 3) re-read summary information from disk. | |
245 | * 4) invalidate all inactive vnodes. | |
246 | * 5) invalidate all cached file data. | |
247 | * 6) re-read inode data for all active vnodes. | |
248 | */ | |
249 | ffs_reload(mountp, cred, p) | |
250 | register struct mount *mountp; | |
251 | struct ucred *cred; | |
252 | struct proc *p; | |
253 | { | |
254 | register struct vnode *vp, *nvp, *devvp; | |
255 | struct inode *ip; | |
a79eb26d KM |
256 | struct csum *space; |
257 | struct buf *bp; | |
258 | struct fs *fs; | |
259 | int i, blks, size, error; | |
260 | ||
261 | if ((mountp->mnt_flag & MNT_RDONLY) == 0) | |
262 | return (EINVAL); | |
263 | /* | |
264 | * Step 1: invalidate all cached meta-data. | |
265 | */ | |
266 | devvp = VFSTOUFS(mountp)->um_devvp; | |
646464db | 267 | if (vinvalbuf(devvp, 0, cred, p, 0, 0)) |
a79eb26d KM |
268 | panic("ffs_reload: dirty1"); |
269 | /* | |
270 | * Step 2: re-read superblock from disk. | |
271 | */ | |
272 | if (error = bread(devvp, SBLOCK, SBSIZE, NOCRED, &bp)) | |
273 | return (error); | |
dbb7672a | 274 | fs = (struct fs *)bp->b_data; |
a79eb26d KM |
275 | if (fs->fs_magic != FS_MAGIC || fs->fs_bsize > MAXBSIZE || |
276 | fs->fs_bsize < sizeof(struct fs)) { | |
277 | brelse(bp); | |
278 | return (EIO); /* XXX needs translation */ | |
279 | } | |
280 | fs = VFSTOUFS(mountp)->um_fs; | |
dbb7672a | 281 | bcopy(&fs->fs_csp[0], &((struct fs *)bp->b_data)->fs_csp[0], |
a79eb26d | 282 | sizeof(fs->fs_csp)); |
dbb7672a | 283 | bcopy(bp->b_data, fs, (u_int)fs->fs_sbsize); |
a79eb26d KM |
284 | if (fs->fs_sbsize < SBSIZE) |
285 | bp->b_flags |= B_INVAL; | |
286 | brelse(bp); | |
3c69c1a2 | 287 | mountp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; |
a79eb26d KM |
288 | ffs_oldfscompat(fs); |
289 | /* | |
290 | * Step 3: re-read summary information from disk. | |
291 | */ | |
292 | blks = howmany(fs->fs_cssize, fs->fs_fsize); | |
293 | space = fs->fs_csp[0]; | |
294 | for (i = 0; i < blks; i += fs->fs_frag) { | |
295 | size = fs->fs_bsize; | |
296 | if (i + fs->fs_frag > blks) | |
297 | size = (blks - i) * fs->fs_fsize; | |
298 | if (error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, | |
299 | NOCRED, &bp)) | |
300 | return (error); | |
dbb7672a | 301 | bcopy(bp->b_data, fs->fs_csp[fragstoblks(fs, i)], (u_int)size); |
a79eb26d KM |
302 | brelse(bp); |
303 | } | |
304 | loop: | |
c3627aa8 KM |
305 | for (vp = mountp->mnt_vnodelist.lh_first; vp != NULL; vp = nvp) { |
306 | nvp = vp->v_mntvnodes.le_next; | |
a79eb26d KM |
307 | /* |
308 | * Step 4: invalidate all inactive vnodes. | |
309 | */ | |
310 | if (vp->v_usecount == 0) { | |
311 | vgone(vp); | |
312 | continue; | |
313 | } | |
314 | /* | |
315 | * Step 5: invalidate all cached file data. | |
316 | */ | |
c3627aa8 | 317 | if (vget(vp, 1)) |
a79eb26d | 318 | goto loop; |
646464db | 319 | if (vinvalbuf(vp, 0, cred, p, 0, 0)) |
a79eb26d KM |
320 | panic("ffs_reload: dirty2"); |
321 | /* | |
322 | * Step 6: re-read inode data for all active vnodes. | |
323 | */ | |
324 | ip = VTOI(vp); | |
cf5ef508 KB |
325 | if (error = |
326 | bread(devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)), | |
a79eb26d KM |
327 | (int)fs->fs_bsize, NOCRED, &bp)) { |
328 | vput(vp); | |
329 | return (error); | |
330 | } | |
cf5ef508 KB |
331 | ip->i_din = *((struct dinode *)bp->b_data + |
332 | ino_to_fsbo(fs, ip->i_number)); | |
a79eb26d KM |
333 | brelse(bp); |
334 | vput(vp); | |
335 | if (vp->v_mount != mountp) | |
336 | goto loop; | |
337 | } | |
338 | return (0); | |
339 | } | |
340 | ||
7188ac27 KM |
341 | /* |
342 | * Common code for mount and mountroot | |
343 | */ | |
ab9f4fb0 KB |
344 | int |
345 | ffs_mountfs(devvp, mp, p) | |
1182ae61 | 346 | register struct vnode *devvp; |
7188ac27 | 347 | struct mount *mp; |
0eb6f54a | 348 | struct proc *p; |
71e4e98b | 349 | { |
6b50a7c5 KM |
350 | register struct ufsmount *ump; |
351 | struct buf *bp; | |
71e4e98b | 352 | register struct fs *fs; |
4867414f | 353 | dev_t dev; |
ec67a3ce MK |
354 | struct partinfo dpart; |
355 | int havepart = 0, blks; | |
27d00e76 | 356 | caddr_t base, space; |
7188ac27 | 357 | int havepart = 0, blks; |
2878f11c KM |
358 | int error, i, size, ronly; |
359 | int32_t *lp; | |
4867414f | 360 | struct ucred *cred; |
1c26e003 | 361 | extern struct vnode *rootvp; |
71e4e98b | 362 | |
4867414f KM |
363 | dev = devvp->v_rdev; |
364 | cred = p ? p->p_ucred : NOCRED; | |
1feabdab | 365 | if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p)) |
7188ac27 | 366 | return (error); |
4867414f | 367 | if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, cred, p) != 0) |
609e7cfa | 368 | size = DEV_BSIZE; |
0eb6f54a | 369 | else { |
ec67a3ce MK |
370 | havepart = 1; |
371 | size = dpart.disklab->d_secsize; | |
7188ac27 | 372 | } |
6b50a7c5 KM |
373 | |
374 | bp = NULL; | |
375 | ump = NULL; | |
4867414f | 376 | if (error = bread(devvp, SBLOCK, SBSIZE, cred, &bp)) |
71e4e98b | 377 | goto out; |
dbb7672a | 378 | fs = (struct fs *)bp->b_data; |
8dc876c1 | 379 | error = EINVAL; /* XXX needs translation */ |
1c281610 MK |
380 | goto out; |
381 | } | |
ab9f4fb0 | 382 | ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK); |
7bff53ea | 383 | bzero((caddr_t)ump, sizeof *ump); |
b1ca3fbf | 384 | ump->um_fs = malloc((u_long)fs->fs_sbsize, M_UFSMNT, |
5adcb337 | 385 | M_WAITOK); |
dbb7672a | 386 | bcopy(bp->b_data, ump->um_fs, (u_int)fs->fs_sbsize); |
5d96a9ad KM |
387 | if (fs->fs_sbsize < SBSIZE) |
388 | bp->b_flags |= B_INVAL; | |
e018935f MK |
389 | brelse(bp); |
390 | bp = NULL; | |
7188ac27 KM |
391 | fs = ump->um_fs; |
392 | fs->fs_ronly = ronly; | |
71e4e98b SL |
393 | if (ronly == 0) |
394 | fs->fs_fmod = 1; | |
ec67a3ce MK |
395 | #ifdef SECSIZE |
396 | /* | |
397 | * If we have a disk label, force per-partition | |
398 | * filesystem information to be correct | |
399 | * and set correct current fsbtodb shift. | |
400 | */ | |
401 | #endif SECSIZE | |
402 | if (havepart) { | |
403 | dpart.part->p_fstype = FS_BSDFFS; | |
404 | dpart.part->p_fsize = fs->fs_fsize; | |
405 | dpart.part->p_frag = fs->fs_frag; | |
406 | #ifdef SECSIZE | |
407 | #ifdef tahoe | |
408 | /* | |
409 | * Save the original fsbtodb shift to restore on updates. | |
410 | * (Console doesn't understand fsbtodb changes.) | |
411 | */ | |
412 | fs->fs_sparecon[0] = fs->fs_fsbtodb; | |
413 | #endif | |
414 | i = fs->fs_fsize / size; | |
415 | for (fs->fs_fsbtodb = 0; i > 1; i >>= 1) | |
416 | fs->fs_fsbtodb++; | |
417 | #endif SECSIZE | |
418 | fs->fs_dbsize = size; | |
419 | } | |
71e4e98b | 420 | blks = howmany(fs->fs_cssize, fs->fs_fsize); |
2878f11c KM |
421 | size = fs->fs_cssize; |
422 | if (fs->fs_contigsumsize > 0) | |
423 | size += fs->fs_ncg * sizeof(int32_t); | |
424 | base = space = malloc((u_long)size, M_UFSMNT, M_WAITOK); | |
71e4e98b SL |
425 | for (i = 0; i < blks; i += fs->fs_frag) { |
426 | size = fs->fs_bsize; | |
427 | if (i + fs->fs_frag > blks) | |
428 | size = (blks - i) * fs->fs_fsize; | |
ec67a3ce MK |
429 | #ifdef SECSIZE |
430 | tp = bread(dev, fsbtodb(fs, fs->fs_csaddr + i), size, | |
431 | fs->fs_dbsize); | |
432 | #else SECSIZE | |
4867414f KM |
433 | if (error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, |
434 | cred, &bp)) { | |
b1ca3fbf | 435 | free(base, M_UFSMNT); |
71e4e98b SL |
436 | goto out; |
437 | } | |
dbb7672a | 438 | bcopy(bp->b_data, space, (u_int)size); |
60f9c9e3 | 439 | fs->fs_csp[fragstoblks(fs, i)] = (struct csum *)space; |
71e4e98b | 440 | space += size; |
e018935f MK |
441 | brelse(bp); |
442 | bp = NULL; | |
71e4e98b | 443 | } |
2878f11c KM |
444 | if (fs->fs_contigsumsize > 0) { |
445 | fs->fs_maxcluster = lp = (int32_t *)space; | |
446 | for (i = 0; i < fs->fs_ncg; i++) | |
447 | *lp++ = fs->fs_contigsumsize; | |
448 | } | |
82161bc8 KM |
449 | mp->mnt_data = (qaddr_t)ump; |
450 | mp->mnt_stat.f_fsid.val[0] = (long)dev; | |
451 | mp->mnt_stat.f_fsid.val[1] = MOUNT_UFS; | |
ea301039 | 452 | mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; |
82161bc8 | 453 | mp->mnt_flag |= MNT_LOCAL; |
7188ac27 KM |
454 | ump->um_mountp = mp; |
455 | ump->um_dev = dev; | |
456 | ump->um_devvp = devvp; | |
3614593e MS |
457 | ump->um_nindir = fs->fs_nindir; |
458 | ump->um_bptrtodb = fs->fs_fsbtodb; | |
459 | ump->um_seqinc = fs->fs_frag; | |
8dc876c1 KM |
460 | for (i = 0; i < MAXQUOTAS; i++) |
461 | ump->um_quotas[i] = NULLVP; | |
0f93ba7b | 462 | devvp->v_specflags |= SI_MOUNTEDON; |
a79eb26d | 463 | ffs_oldfscompat(fs); |
2878f11c KM |
464 | ump->um_savedmaxfilesize = fs->fs_maxfilesize; /* XXX */ |
465 | if (fs->fs_maxfilesize > (quad_t)1 << 39) /* XXX */ | |
466 | fs->fs_maxfilesize = (quad_t)1 << 39; /* XXX */ | |
a79eb26d KM |
467 | return (0); |
468 | out: | |
469 | if (bp) | |
470 | brelse(bp); | |
4867414f | 471 | (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, cred, p); |
a79eb26d KM |
472 | if (ump) { |
473 | free(ump->um_fs, M_UFSMNT); | |
474 | free(ump, M_UFSMNT); | |
475 | mp->mnt_data = (qaddr_t)0; | |
476 | } | |
477 | return (error); | |
478 | } | |
479 | ||
480 | /* | |
481 | * Sanity checks for old file systems. | |
482 | * | |
483 | * XXX - goes away some day. | |
484 | */ | |
485 | ffs_oldfscompat(fs) | |
486 | struct fs *fs; | |
487 | { | |
488 | int i; | |
7188ac27 | 489 | |
2a4eff84 JSP |
490 | fs->fs_npsect = max(fs->fs_npsect, fs->fs_nsect); /* XXX */ |
491 | fs->fs_interleave = max(fs->fs_interleave, 1); /* XXX */ | |
2af59000 KM |
492 | if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ |
493 | fs->fs_nrpos = 8; /* XXX */ | |
4605fb61 KM |
494 | if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ |
495 | quad_t sizepb = fs->fs_bsize; /* XXX */ | |
496 | /* XXX */ | |
497 | fs->fs_maxfilesize = fs->fs_bsize * NDADDR - 1; /* XXX */ | |
498 | for (i = 0; i < NIADDR; i++) { /* XXX */ | |
499 | sizepb *= NINDIR(fs); /* XXX */ | |
500 | fs->fs_maxfilesize += sizepb; /* XXX */ | |
501 | } /* XXX */ | |
502 | fs->fs_qbmask = ~fs->fs_bmask; /* XXX */ | |
503 | fs->fs_qfmask = ~fs->fs_fmask; /* XXX */ | |
504 | } /* XXX */ | |
609e7cfa | 505 | |
7188ac27 | 506 | return (0); |
71e4e98b SL |
507 | } |
508 | ||
7188ac27 KM |
509 | /* |
510 | * unmount system call | |
511 | */ | |
ab9f4fb0 KB |
512 | int |
513 | ffs_unmount(mp, mntflags, p) | |
7188ac27 | 514 | struct mount *mp; |
8dc876c1 | 515 | int mntflags; |
0eb6f54a | 516 | struct proc *p; |
71e4e98b | 517 | { |
7188ac27 | 518 | register struct ufsmount *ump; |
71e4e98b | 519 | register struct fs *fs; |
de022b87 | 520 | int error, flags; |
71e4e98b | 521 | |
6b50a7c5 | 522 | flags = 0; |
87be6db2 | 523 | if (mntflags & MNT_FORCE) { |
c3627aa8 | 524 | if (mp->mnt_flag & MNT_ROOTFS) |
87be6db2 | 525 | return (EINVAL); |
8dc876c1 | 526 | flags |= FORCECLOSE; |
87be6db2 | 527 | } |
a79eb26d KM |
528 | if (error = ffs_flushfiles(mp, flags, p)) |
529 | return (error); | |
530 | ump = VFSTOUFS(mp); | |
531 | fs = ump->um_fs; | |
a79eb26d | 532 | ump->um_devvp->v_specflags &= ~SI_MOUNTEDON; |
de022b87 | 533 | error = VOP_CLOSE(ump->um_devvp, fs->fs_ronly ? FREAD : FREAD|FWRITE, |
a79eb26d KM |
534 | NOCRED, p); |
535 | vrele(ump->um_devvp); | |
536 | free(fs->fs_csp[0], M_UFSMNT); | |
537 | free(fs, M_UFSMNT); | |
538 | free(ump, M_UFSMNT); | |
539 | mp->mnt_data = (qaddr_t)0; | |
540 | mp->mnt_flag &= ~MNT_LOCAL; | |
541 | return (error); | |
542 | } | |
543 | ||
544 | /* | |
545 | * Flush out all the files in a filesystem. | |
546 | */ | |
547 | ffs_flushfiles(mp, flags, p) | |
548 | register struct mount *mp; | |
549 | int flags; | |
550 | struct proc *p; | |
551 | { | |
552 | extern int doforce; | |
553 | register struct ufsmount *ump; | |
554 | int i, error; | |
555 | ||
556 | if (!doforce) | |
557 | flags &= ~FORCECLOSE; | |
7188ac27 | 558 | ump = VFSTOUFS(mp); |
ec67a3ce | 559 | return (error); |
71e4e98b | 560 | #ifdef QUOTA |
82161bc8 | 561 | if (mp->mnt_flag & MNT_QUOTA) { |
8dc876c1 | 562 | if (error = vflush(mp, NULLVP, SKIPSYSTEM|flags)) |
6d943995 | 563 | return (error); |
8dc876c1 KM |
564 | for (i = 0; i < MAXQUOTAS; i++) { |
565 | if (ump->um_quotas[i] == NULLVP) | |
566 | continue; | |
70a360ba | 567 | quotaoff(p, mp, i); |
8dc876c1 | 568 | } |
6d943995 | 569 | /* |
8dc876c1 KM |
570 | * Here we fall through to vflush again to ensure |
571 | * that we have gotten rid of all the system vnodes. | |
6d943995 | 572 | */ |
8dc876c1 | 573 | } |
71e4e98b | 574 | #endif |
7188ac27 KM |
575 | * Get file system statistics. |
576 | */ | |
ab9f4fb0 KB |
577 | int |
578 | ffs_statfs(mp, sbp, p) | |
7188ac27 KM |
579 | struct mount *mp; |
580 | register struct statfs *sbp; | |
0eb6f54a | 581 | struct proc *p; |
7188ac27 KM |
582 | { |
583 | register struct ufsmount *ump; | |
584 | register struct fs *fs; | |
585 | ||
586 | ump = VFSTOUFS(mp); | |
587 | fs = ump->um_fs; | |
588 | if (fs->fs_magic != FS_MAGIC) | |
ab9f4fb0 | 589 | panic("ffs_statfs"); |
7188ac27 | 590 | sbp->f_type = MOUNT_UFS; |
06445aba KM |
591 | sbp->f_bsize = fs->fs_fsize; |
592 | sbp->f_iosize = fs->fs_bsize; | |
7188ac27 KM |
593 | sbp->f_blocks = fs->fs_dsize; |
594 | sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag + | |
595 | fs->fs_cstotal.cs_nffree; | |
596 | sbp->f_bavail = (fs->fs_dsize * (100 - fs->fs_minfree) / 100) - | |
597 | (fs->fs_dsize - sbp->f_bfree); | |
5c41c19e | 598 | sbp->f_files = fs->fs_ncg * fs->fs_ipg - ROOTINO; |
7188ac27 | 599 | sbp->f_ffree = fs->fs_cstotal.cs_nifree; |
82161bc8 KM |
600 | if (sbp != &mp->mnt_stat) { |
601 | bcopy((caddr_t)mp->mnt_stat.f_mntonname, | |
d45de50d | 602 | (caddr_t)&sbp->f_mntonname[0], MNAMELEN); |
82161bc8 | 603 | bcopy((caddr_t)mp->mnt_stat.f_mntfromname, |
d45de50d KM |
604 | (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); |
605 | } | |
7188ac27 KM |
606 | return (0); |
607 | } | |
608 | ||
7188ac27 KM |
609 | /* |
610 | * Go through the disk queues to initiate sandbagged IO; | |
611 | * go through the inodes to write those that have been modified; | |
612 | * initiate the writing of the super block if it has been modified. | |
8dc876c1 KM |
613 | * |
614 | * Note: we are always called with the filesystem marked `MPBUSY'. | |
7188ac27 | 615 | */ |
ab9f4fb0 | 616 | int |
6b50a7c5 | 617 | ffs_sync(mp, waitfor, cred, p) |
71e4e98b | 618 | struct mount *mp; |
7188ac27 | 619 | int waitfor; |
6b50a7c5 KM |
620 | struct ucred *cred; |
621 | struct proc *p; | |
71e4e98b | 622 | { |
31593ba7 | 623 | register struct vnode *vp; |
7188ac27 KM |
624 | register struct inode *ip; |
625 | register struct ufsmount *ump = VFSTOUFS(mp); | |
626 | register struct fs *fs; | |
812b91f3 | 627 | int error, allerror = 0; |
7188ac27 | 628 | |
7188ac27 | 629 | fs = ump->um_fs; |
7188ac27 KM |
630 | /* |
631 | * Write back modified superblock. | |
632 | * Consistency check that the superblock | |
633 | * is still in the buffer cache. | |
634 | */ | |
635 | if (fs->fs_fmod != 0) { | |
636 | if (fs->fs_ronly != 0) { /* XXX */ | |
637 | printf("fs = %s\n", fs->fs_fsmnt); | |
638 | panic("update: rofs mod"); | |
639 | } | |
640 | fs->fs_fmod = 0; | |
641 | fs->fs_time = time.tv_sec; | |
ab9f4fb0 | 642 | allerror = ffs_sbupdate(ump, waitfor); |
7188ac27 KM |
643 | } |
644 | /* | |
645 | * Write back each (modified) inode. | |
646 | */ | |
25b5cf58 | 647 | loop: |
c3627aa8 KM |
648 | for (vp = mp->mnt_vnodelist.lh_first; |
649 | vp != NULL; | |
650 | vp = vp->v_mntvnodes.le_next) { | |
a242f429 KM |
651 | /* |
652 | * If the vnode that we are about to sync is no longer | |
653 | * associated with this mount point, start over. | |
654 | */ | |
655 | if (vp->v_mount != mp) | |
656 | goto loop; | |
d85a9d1b KM |
657 | if (VOP_ISLOCKED(vp)) |
658 | continue; | |
31593ba7 | 659 | ip = VTOI(vp); |
dbb7672a | 660 | if ((ip->i_flag & |
cf5ef508 | 661 | (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0 && |
c3627aa8 | 662 | vp->v_dirtyblkhd.lh_first == NULL) |
7188ac27 | 663 | continue; |
c3627aa8 | 664 | if (vget(vp, 1)) |
25b5cf58 | 665 | goto loop; |
6b50a7c5 | 666 | if (error = VOP_FSYNC(vp, cred, waitfor, p)) |
812b91f3 KM |
667 | allerror = error; |
668 | vput(vp); | |
7188ac27 | 669 | } |
7188ac27 | 670 | /* |
5d96a9ad | 671 | * Force stale file system control information to be flushed. |
7188ac27 | 672 | */ |
6b50a7c5 KM |
673 | if (error = VOP_FSYNC(ump->um_devvp, cred, waitfor, p)) |
674 | allerror = error; | |
8dc876c1 KM |
675 | #ifdef QUOTA |
676 | qsync(mp); | |
677 | #endif | |
812b91f3 | 678 | return (allerror); |
7188ac27 KM |
679 | } |
680 | ||
067ae075 | 681 | /* |
cf5ef508 KB |
682 | * Look up a FFS dinode number to find its incore vnode, otherwise read it |
683 | * in from disk. If it is in core, wait for the lock bit to clear, then | |
684 | * return the inode locked. Detection and handling of mount points must be | |
685 | * done by the calling routine. | |
067ae075 KM |
686 | */ |
687 | int | |
688 | ffs_vget(mp, ino, vpp) | |
689 | struct mount *mp; | |
690 | ino_t ino; | |
691 | struct vnode **vpp; | |
692 | { | |
693 | register struct fs *fs; | |
694 | register struct inode *ip; | |
695 | struct ufsmount *ump; | |
696 | struct buf *bp; | |
067ae075 | 697 | struct vnode *vp; |
067ae075 KM |
698 | dev_t dev; |
699 | int i, type, error; | |
700 | ||
701 | ump = VFSTOUFS(mp); | |
702 | dev = ump->um_dev; | |
703 | if ((*vpp = ufs_ihashget(dev, ino)) != NULL) | |
704 | return (0); | |
705 | ||
706 | /* Allocate a new vnode/inode. */ | |
707 | if (error = getnewvnode(VT_UFS, mp, ffs_vnodeop_p, &vp)) { | |
708 | *vpp = NULL; | |
709 | return (error); | |
710 | } | |
711 | type = ump->um_devvp->v_tag == VT_MFS ? M_MFSNODE : M_FFSNODE; /* XXX */ | |
712 | MALLOC(ip, struct inode *, sizeof(struct inode), type, M_WAITOK); | |
bd620aaa | 713 | bzero((caddr_t)ip, sizeof(struct inode)); |
067ae075 KM |
714 | vp->v_data = ip; |
715 | ip->i_vnode = vp; | |
067ae075 KM |
716 | ip->i_fs = fs = ump->um_fs; |
717 | ip->i_dev = dev; | |
718 | ip->i_number = ino; | |
719 | #ifdef QUOTA | |
720 | for (i = 0; i < MAXQUOTAS; i++) | |
721 | ip->i_dquot[i] = NODQUOT; | |
722 | #endif | |
723 | /* | |
724 | * Put it onto its hash chain and lock it so that other requests for | |
725 | * this inode will block if they arrive while we are sleeping waiting | |
726 | * for old data structures to be purged or for the contents of the | |
727 | * disk portion of this inode to be read. | |
728 | */ | |
729 | ufs_ihashins(ip); | |
730 | ||
731 | /* Read in the disk contents for the inode, copy into the inode. */ | |
cf5ef508 | 732 | if (error = bread(ump->um_devvp, fsbtodb(fs, ino_to_fsba(fs, ino)), |
067ae075 KM |
733 | (int)fs->fs_bsize, NOCRED, &bp)) { |
734 | /* | |
735 | * The inode does not contain anything useful, so it would | |
bd620aaa KM |
736 | * be misleading to leave it on its hash chain. With mode |
737 | * still zero, it will be unlinked and returned to the free | |
738 | * list by vput(). | |
067ae075 | 739 | */ |
e51f387e | 740 | vput(vp); |
067ae075 KM |
741 | brelse(bp); |
742 | *vpp = NULL; | |
743 | return (error); | |
744 | } | |
cf5ef508 | 745 | ip->i_din = *((struct dinode *)bp->b_data + ino_to_fsbo(fs, ino)); |
067ae075 KM |
746 | brelse(bp); |
747 | ||
748 | /* | |
749 | * Initialize the vnode from the inode, check for aliases. | |
750 | * Note that the underlying vnode may have changed. | |
751 | */ | |
752 | if (error = ufs_vinit(mp, ffs_specop_p, FFS_FIFOOPS, &vp)) { | |
e51f387e | 753 | vput(vp); |
067ae075 KM |
754 | *vpp = NULL; |
755 | return (error); | |
756 | } | |
757 | /* | |
758 | * Finish inode initialization now that aliasing has been resolved. | |
759 | */ | |
760 | ip->i_devvp = ump->um_devvp; | |
761 | VREF(ip->i_devvp); | |
762 | /* | |
763 | * Set up a generation number for this inode if it does not | |
764 | * already have one. This should only happen on old filesystems. | |
765 | */ | |
766 | if (ip->i_gen == 0) { | |
767 | if (++nextgennumber < (u_long)time.tv_sec) | |
768 | nextgennumber = time.tv_sec; | |
769 | ip->i_gen = nextgennumber; | |
770 | if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) | |
cf5ef508 | 771 | ip->i_flag |= IN_MODIFIED; |
067ae075 KM |
772 | } |
773 | /* | |
774 | * Ensure that uid and gid are correct. This is a temporary | |
775 | * fix until fsck has been changed to do the update. | |
776 | */ | |
777 | if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ | |
778 | ip->i_uid = ip->i_din.di_ouid; /* XXX */ | |
779 | ip->i_gid = ip->i_din.di_ogid; /* XXX */ | |
780 | } /* XXX */ | |
781 | ||
782 | *vpp = vp; | |
783 | return (0); | |
784 | } | |
785 | ||
a9013e03 KM |
786 | /* |
787 | * File handle to vnode | |
788 | * | |
789 | * Have to be really careful about stale file handles: | |
790 | * - check that the inode number is valid | |
791 | * - call ffs_vget() to get the locked inode | |
792 | * - check for an unallocated inode (i_mode == 0) | |
03f3a6e4 KM |
793 | * - check that the given client host has export rights and return |
794 | * those rights via. exflagsp and credanonp | |
a9013e03 KM |
795 | */ |
796 | int | |
03f3a6e4 | 797 | ffs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp) |
a9013e03 KM |
798 | register struct mount *mp; |
799 | struct fid *fhp; | |
03f3a6e4 | 800 | struct mbuf *nam; |
a9013e03 | 801 | struct vnode **vpp; |
03f3a6e4 KM |
802 | int *exflagsp; |
803 | struct ucred **credanonp; | |
a9013e03 | 804 | { |
a9013e03 KM |
805 | register struct ufid *ufhp; |
806 | struct fs *fs; | |
a9013e03 KM |
807 | |
808 | ufhp = (struct ufid *)fhp; | |
9e4a3a4a | 809 | fs = VFSTOUFS(mp)->um_fs; |
a9013e03 KM |
810 | if (ufhp->ufid_ino < ROOTINO || |
811 | ufhp->ufid_ino >= fs->fs_ncg * fs->fs_ipg) | |
03f3a6e4 | 812 | return (ESTALE); |
485cf2ee | 813 | return (ufs_check_export(mp, ufhp, nam, vpp, exflagsp, credanonp)); |
a9013e03 KM |
814 | } |
815 | ||
816 | /* | |
817 | * Vnode pointer to File handle | |
818 | */ | |
819 | /* ARGSUSED */ | |
820 | ffs_vptofh(vp, fhp) | |
821 | struct vnode *vp; | |
822 | struct fid *fhp; | |
823 | { | |
824 | register struct inode *ip; | |
825 | register struct ufid *ufhp; | |
826 | ||
827 | ip = VTOI(vp); | |
828 | ufhp = (struct ufid *)fhp; | |
829 | ufhp->ufid_len = sizeof(struct ufid); | |
830 | ufhp->ufid_ino = ip->i_number; | |
831 | ufhp->ufid_gen = ip->i_gen; | |
832 | return (0); | |
833 | } | |
834 | ||
7188ac27 KM |
835 | /* |
836 | * Write a superblock and associated information back to disk. | |
837 | */ | |
06445aba | 838 | int |
ab9f4fb0 | 839 | ffs_sbupdate(mp, waitfor) |
7188ac27 KM |
840 | struct ufsmount *mp; |
841 | int waitfor; | |
842 | { | |
2878f11c | 843 | register struct fs *dfs, *fs = mp->um_fs; |
71e4e98b SL |
844 | register struct buf *bp; |
845 | int blks; | |
846 | caddr_t space; | |
7188ac27 | 847 | int i, size, error = 0; |
71e4e98b | 848 | |
ec67a3ce MK |
849 | #ifdef SECSIZE |
850 | bp = getblk(mp->m_dev, (daddr_t)fsbtodb(fs, SBOFF / fs->fs_fsize), | |
851 | (int)fs->fs_sbsize, fs->fs_dbsize); | |
852 | #else SECSIZE | |
646464db | 853 | bp = getblk(mp->um_devvp, SBLOCK, (int)fs->fs_sbsize, 0, 0); |
ec67a3ce | 854 | #endif SECSIZE |
dbb7672a | 855 | bcopy((caddr_t)fs, bp->b_data, (u_int)fs->fs_sbsize); |
2af59000 | 856 | /* Restore compatibility to old file systems. XXX */ |
2878f11c | 857 | dfs = (struct fs *)bp->b_data; /* XXX */ |
2af59000 | 858 | if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ |
2878f11c | 859 | dfs->fs_nrpos = -1; /* XXX */ |
5eb4cbda MKM |
860 | if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ |
861 | long *lp, tmp; /* XXX */ | |
862 | /* XXX */ | |
2878f11c | 863 | lp = (long *)&dfs->fs_qbmask; /* XXX */ |
5eb4cbda MKM |
864 | tmp = lp[4]; /* XXX */ |
865 | for (i = 4; i > 0; i--) /* XXX */ | |
866 | lp[i] = lp[i-1]; /* XXX */ | |
867 | lp[0] = tmp; /* XXX */ | |
868 | } /* XXX */ | |
2878f11c | 869 | dfs->fs_maxfilesize = mp->um_savedmaxfilesize; /* XXX */ |
ec67a3ce MK |
870 | #ifdef SECSIZE |
871 | #ifdef tahoe | |
872 | /* restore standard fsbtodb shift */ | |
873 | bp->b_un.b_fs->fs_fsbtodb = fs->fs_sparecon[0]; | |
874 | bp->b_un.b_fs->fs_sparecon[0] = 0; | |
875 | #endif | |
876 | #endif SECSIZE | |
7188ac27 KM |
877 | if (waitfor == MNT_WAIT) |
878 | error = bwrite(bp); | |
879 | else | |
880 | bawrite(bp); | |
71e4e98b SL |
881 | blks = howmany(fs->fs_cssize, fs->fs_fsize); |
882 | space = (caddr_t)fs->fs_csp[0]; | |
883 | for (i = 0; i < blks; i += fs->fs_frag) { | |
884 | size = fs->fs_bsize; | |
885 | if (i + fs->fs_frag > blks) | |
886 | size = (blks - i) * fs->fs_fsize; | |
ec67a3ce MK |
887 | #ifdef SECSIZE |
888 | bp = getblk(mp->m_dev, fsbtodb(fs, fs->fs_csaddr + i), size, | |
889 | fs->fs_dbsize); | |
890 | #else SECSIZE | |
646464db KM |
891 | bp = getblk(mp->um_devvp, fsbtodb(fs, fs->fs_csaddr + i), |
892 | size, 0, 0); | |
ec67a3ce | 893 | #endif SECSIZE |
dbb7672a | 894 | bcopy(space, bp->b_data, (u_int)size); |
71e4e98b | 895 | space += size; |
7188ac27 KM |
896 | if (waitfor == MNT_WAIT) |
897 | error = bwrite(bp); | |
898 | else | |
899 | bawrite(bp); | |
71e4e98b | 900 | } |
7188ac27 | 901 | return (error); |
71e4e98b | 902 | } |