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 | * |
646464db | 7 | * @(#)ffs_vfsops.c 7.84 (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, |
a9013e03 | 45 | ffs_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 | } |
d48157d5 | 93 | rootfs = mp; |
82161bc8 KM |
94 | mp->mnt_next = mp; |
95 | mp->mnt_prev = mp; | |
96 | mp->mnt_vnodecovered = NULLVP; | |
7188ac27 KM |
97 | ump = VFSTOUFS(mp); |
98 | fs = ump->um_fs; | |
d45de50d | 99 | bzero(fs->fs_fsmnt, sizeof(fs->fs_fsmnt)); |
7188ac27 | 100 | fs->fs_fsmnt[0] = '/'; |
82161bc8 KM |
101 | bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, |
102 | MNAMELEN); | |
103 | (void) copystr(ROOTNAME, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, | |
104 | &size); | |
105 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
ab9f4fb0 | 106 | (void)ffs_statfs(mp, &mp->mnt_stat, p); |
7188ac27 KM |
107 | vfs_unlock(mp); |
108 | inittodr(fs->fs_time); | |
109 | return (0); | |
110 | } | |
111 | ||
112 | /* | |
113 | * VFS Operations. | |
114 | * | |
115 | * mount system call | |
116 | */ | |
06445aba | 117 | int |
ab9f4fb0 | 118 | ffs_mount(mp, path, data, ndp, p) |
d45de50d | 119 | register struct mount *mp; |
7188ac27 KM |
120 | char *path; |
121 | caddr_t data; | |
122 | struct nameidata *ndp; | |
0eb6f54a | 123 | struct proc *p; |
7188ac27 KM |
124 | { |
125 | struct vnode *devvp; | |
126 | struct ufs_args args; | |
127 | struct ufsmount *ump; | |
128 | register struct fs *fs; | |
129 | u_int size; | |
a79eb26d | 130 | int error, flags; |
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); | |
155 | if (fs->fs_ronly && (mp->mnt_flag & MNT_WANTRDWR)) | |
d48157d5 | 156 | fs->fs_ronly = 0; |
c906fba1 KM |
157 | if (args.fspec == 0) { |
158 | /* | |
159 | * Process export requests. | |
160 | */ | |
161 | if (args.exflags & MNT_EXPORTED) { | |
cb09ceb4 | 162 | if (error = ufs_hang_addrlist(mp, &args)) |
c906fba1 KM |
163 | return (error); |
164 | mp->mnt_flag |= MNT_EXPORTED; | |
165 | } | |
166 | if (args.exflags & MNT_DELEXPORT) { | |
cb09ceb4 | 167 | ufs_free_addrlist(ump); |
c906fba1 KM |
168 | mp->mnt_flag &= |
169 | ~(MNT_EXPORTED | MNT_DEFEXPORTED); | |
170 | } | |
3b931949 | 171 | return (0); |
c906fba1 | 172 | } |
190244fb MK |
173 | } |
174 | /* | |
175 | * Not an update, or updating the name: look up the name | |
176 | * and verify that it refers to a sensible block device. | |
177 | */ | |
995e59df KM |
178 | NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); |
179 | if (error = namei(ndp)) | |
190244fb MK |
180 | return (error); |
181 | devvp = ndp->ni_vp; | |
ab9f4fb0 | 182 | |
190244fb MK |
183 | if (devvp->v_type != VBLK) { |
184 | vrele(devvp); | |
185 | return (ENOTBLK); | |
186 | } | |
187 | if (major(devvp->v_rdev) >= nblkdev) { | |
188 | vrele(devvp); | |
189 | return (ENXIO); | |
190 | } | |
191 | if ((mp->mnt_flag & MNT_UPDATE) == 0) | |
ab9f4fb0 | 192 | error = ffs_mountfs(devvp, mp, p); |
190244fb | 193 | else { |
d48157d5 KM |
194 | if (devvp != ump->um_devvp) |
195 | error = EINVAL; /* needs translation */ | |
2a7dbb09 KM |
196 | else |
197 | vrele(devvp); | |
d48157d5 | 198 | } |
7188ac27 KM |
199 | if (error) { |
200 | vrele(devvp); | |
201 | return (error); | |
27d00e76 | 202 | } |
7188ac27 KM |
203 | ump = VFSTOUFS(mp); |
204 | fs = ump->um_fs; | |
205 | (void) copyinstr(path, fs->fs_fsmnt, sizeof(fs->fs_fsmnt) - 1, &size); | |
206 | bzero(fs->fs_fsmnt + size, sizeof(fs->fs_fsmnt) - size); | |
82161bc8 KM |
207 | bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, |
208 | MNAMELEN); | |
209 | (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, | |
210 | &size); | |
211 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
ab9f4fb0 | 212 | (void)ffs_statfs(mp, &mp->mnt_stat, p); |
7188ac27 | 213 | return (0); |
71e4e98b SL |
214 | } |
215 | ||
a79eb26d KM |
216 | /* |
217 | * Reload all incore data for a filesystem (used after running fsck on | |
218 | * the root filesystem and finding things to fix). The filesystem must | |
219 | * be mounted read-only. | |
220 | * | |
221 | * Things to do to update the mount: | |
222 | * 1) invalidate all cached meta-data. | |
223 | * 2) re-read superblock from disk. | |
224 | * 3) re-read summary information from disk. | |
225 | * 4) invalidate all inactive vnodes. | |
226 | * 5) invalidate all cached file data. | |
227 | * 6) re-read inode data for all active vnodes. | |
228 | */ | |
229 | ffs_reload(mountp, cred, p) | |
230 | register struct mount *mountp; | |
231 | struct ucred *cred; | |
232 | struct proc *p; | |
233 | { | |
234 | register struct vnode *vp, *nvp, *devvp; | |
235 | struct inode *ip; | |
236 | struct dinode *dp; | |
237 | struct csum *space; | |
238 | struct buf *bp; | |
239 | struct fs *fs; | |
240 | int i, blks, size, error; | |
241 | ||
242 | if ((mountp->mnt_flag & MNT_RDONLY) == 0) | |
243 | return (EINVAL); | |
244 | /* | |
245 | * Step 1: invalidate all cached meta-data. | |
246 | */ | |
247 | devvp = VFSTOUFS(mountp)->um_devvp; | |
646464db | 248 | if (vinvalbuf(devvp, 0, cred, p, 0, 0)) |
a79eb26d KM |
249 | panic("ffs_reload: dirty1"); |
250 | /* | |
251 | * Step 2: re-read superblock from disk. | |
252 | */ | |
253 | if (error = bread(devvp, SBLOCK, SBSIZE, NOCRED, &bp)) | |
254 | return (error); | |
255 | fs = bp->b_un.b_fs; | |
256 | if (fs->fs_magic != FS_MAGIC || fs->fs_bsize > MAXBSIZE || | |
257 | fs->fs_bsize < sizeof(struct fs)) { | |
258 | brelse(bp); | |
259 | return (EIO); /* XXX needs translation */ | |
260 | } | |
261 | fs = VFSTOUFS(mountp)->um_fs; | |
262 | bcopy((caddr_t)&fs->fs_csp[0], (caddr_t)&bp->b_un.b_fs->fs_csp[0], | |
263 | sizeof(fs->fs_csp)); | |
264 | bcopy((caddr_t)bp->b_un.b_addr, (caddr_t)fs, (u_int)fs->fs_sbsize); | |
265 | if (fs->fs_sbsize < SBSIZE) | |
266 | bp->b_flags |= B_INVAL; | |
267 | brelse(bp); | |
268 | ffs_oldfscompat(fs); | |
269 | /* | |
270 | * Step 3: re-read summary information from disk. | |
271 | */ | |
272 | blks = howmany(fs->fs_cssize, fs->fs_fsize); | |
273 | space = fs->fs_csp[0]; | |
274 | for (i = 0; i < blks; i += fs->fs_frag) { | |
275 | size = fs->fs_bsize; | |
276 | if (i + fs->fs_frag > blks) | |
277 | size = (blks - i) * fs->fs_fsize; | |
278 | if (error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, | |
279 | NOCRED, &bp)) | |
280 | return (error); | |
281 | bcopy((caddr_t)bp->b_un.b_addr, fs->fs_csp[fragstoblks(fs, i)], | |
282 | (u_int)size); | |
283 | brelse(bp); | |
284 | } | |
285 | loop: | |
286 | for (vp = mountp->mnt_mounth; vp; vp = nvp) { | |
287 | nvp = vp->v_mountf; | |
288 | /* | |
289 | * Step 4: invalidate all inactive vnodes. | |
290 | */ | |
291 | if (vp->v_usecount == 0) { | |
292 | vgone(vp); | |
293 | continue; | |
294 | } | |
295 | /* | |
296 | * Step 5: invalidate all cached file data. | |
297 | */ | |
298 | if (vget(vp)) | |
299 | goto loop; | |
646464db | 300 | if (vinvalbuf(vp, 0, cred, p, 0, 0)) |
a79eb26d KM |
301 | panic("ffs_reload: dirty2"); |
302 | /* | |
303 | * Step 6: re-read inode data for all active vnodes. | |
304 | */ | |
305 | ip = VTOI(vp); | |
306 | if (error = bread(devvp, fsbtodb(fs, itod(fs, ip->i_number)), | |
307 | (int)fs->fs_bsize, NOCRED, &bp)) { | |
308 | vput(vp); | |
309 | return (error); | |
310 | } | |
311 | dp = bp->b_un.b_dino; | |
312 | dp += itoo(fs, ip->i_number); | |
313 | ip->i_din = *dp; | |
314 | brelse(bp); | |
315 | vput(vp); | |
316 | if (vp->v_mount != mountp) | |
317 | goto loop; | |
318 | } | |
319 | return (0); | |
320 | } | |
321 | ||
7188ac27 KM |
322 | /* |
323 | * Common code for mount and mountroot | |
324 | */ | |
ab9f4fb0 KB |
325 | int |
326 | ffs_mountfs(devvp, mp, p) | |
1182ae61 | 327 | register struct vnode *devvp; |
7188ac27 | 328 | struct mount *mp; |
0eb6f54a | 329 | struct proc *p; |
71e4e98b | 330 | { |
6b50a7c5 KM |
331 | register struct ufsmount *ump; |
332 | struct buf *bp; | |
71e4e98b | 333 | register struct fs *fs; |
7188ac27 | 334 | dev_t dev = devvp->v_rdev; |
ec67a3ce MK |
335 | struct partinfo dpart; |
336 | int havepart = 0, blks; | |
27d00e76 | 337 | caddr_t base, space; |
7188ac27 KM |
338 | int havepart = 0, blks; |
339 | int error, i, size; | |
6b50a7c5 | 340 | int ronly; |
1c26e003 | 341 | extern struct vnode *rootvp; |
71e4e98b | 342 | |
0eb6f54a | 343 | if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p)) |
7188ac27 | 344 | return (error); |
0eb6f54a | 345 | if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, NOCRED, p) != 0) |
609e7cfa | 346 | size = DEV_BSIZE; |
0eb6f54a | 347 | else { |
ec67a3ce MK |
348 | havepart = 1; |
349 | size = dpart.disklab->d_secsize; | |
7188ac27 | 350 | } |
6b50a7c5 KM |
351 | |
352 | bp = NULL; | |
353 | ump = NULL; | |
8dc876c1 | 354 | if (error = bread(devvp, SBLOCK, SBSIZE, NOCRED, &bp)) |
71e4e98b | 355 | goto out; |
e018935f | 356 | fs = bp->b_un.b_fs; |
8dc876c1 | 357 | error = EINVAL; /* XXX needs translation */ |
1c281610 MK |
358 | goto out; |
359 | } | |
ab9f4fb0 | 360 | ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK); |
7bff53ea | 361 | bzero((caddr_t)ump, sizeof *ump); |
b1ca3fbf | 362 | ump->um_fs = malloc((u_long)fs->fs_sbsize, M_UFSMNT, |
5adcb337 | 363 | M_WAITOK); |
7188ac27 | 364 | bcopy((caddr_t)bp->b_un.b_addr, (caddr_t)ump->um_fs, |
71e4e98b | 365 | (u_int)fs->fs_sbsize); |
5d96a9ad KM |
366 | if (fs->fs_sbsize < SBSIZE) |
367 | bp->b_flags |= B_INVAL; | |
e018935f MK |
368 | brelse(bp); |
369 | bp = NULL; | |
7188ac27 KM |
370 | fs = ump->um_fs; |
371 | fs->fs_ronly = ronly; | |
71e4e98b SL |
372 | if (ronly == 0) |
373 | fs->fs_fmod = 1; | |
609e7cfa MK |
374 | if (havepart) { |
375 | dpart.part->p_fstype = FS_BSDFFS; | |
376 | dpart.part->p_fsize = fs->fs_fsize; | |
377 | dpart.part->p_frag = fs->fs_frag; | |
42ff4c2e | 378 | dpart.part->p_cpg = fs->fs_cpg; |
609e7cfa | 379 | } |
ec67a3ce MK |
380 | #ifdef SECSIZE |
381 | /* | |
382 | * If we have a disk label, force per-partition | |
383 | * filesystem information to be correct | |
384 | * and set correct current fsbtodb shift. | |
385 | */ | |
386 | #endif SECSIZE | |
387 | if (havepart) { | |
388 | dpart.part->p_fstype = FS_BSDFFS; | |
389 | dpart.part->p_fsize = fs->fs_fsize; | |
390 | dpart.part->p_frag = fs->fs_frag; | |
391 | #ifdef SECSIZE | |
392 | #ifdef tahoe | |
393 | /* | |
394 | * Save the original fsbtodb shift to restore on updates. | |
395 | * (Console doesn't understand fsbtodb changes.) | |
396 | */ | |
397 | fs->fs_sparecon[0] = fs->fs_fsbtodb; | |
398 | #endif | |
399 | i = fs->fs_fsize / size; | |
400 | for (fs->fs_fsbtodb = 0; i > 1; i >>= 1) | |
401 | fs->fs_fsbtodb++; | |
402 | #endif SECSIZE | |
403 | fs->fs_dbsize = size; | |
404 | } | |
71e4e98b | 405 | blks = howmany(fs->fs_cssize, fs->fs_fsize); |
b1ca3fbf | 406 | base = space = malloc((u_long)fs->fs_cssize, M_UFSMNT, |
5adcb337 | 407 | M_WAITOK); |
71e4e98b SL |
408 | for (i = 0; i < blks; i += fs->fs_frag) { |
409 | size = fs->fs_bsize; | |
410 | if (i + fs->fs_frag > blks) | |
411 | size = (blks - i) * fs->fs_fsize; | |
ec67a3ce MK |
412 | #ifdef SECSIZE |
413 | tp = bread(dev, fsbtodb(fs, fs->fs_csaddr + i), size, | |
414 | fs->fs_dbsize); | |
415 | #else SECSIZE | |
a937f856 KM |
416 | error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, |
417 | NOCRED, &bp); | |
7188ac27 | 418 | if (error) { |
b1ca3fbf | 419 | free(base, M_UFSMNT); |
71e4e98b SL |
420 | goto out; |
421 | } | |
e018935f | 422 | bcopy((caddr_t)bp->b_un.b_addr, space, (u_int)size); |
60f9c9e3 | 423 | fs->fs_csp[fragstoblks(fs, i)] = (struct csum *)space; |
71e4e98b | 424 | space += size; |
e018935f MK |
425 | brelse(bp); |
426 | bp = NULL; | |
71e4e98b | 427 | } |
82161bc8 KM |
428 | mp->mnt_data = (qaddr_t)ump; |
429 | mp->mnt_stat.f_fsid.val[0] = (long)dev; | |
430 | mp->mnt_stat.f_fsid.val[1] = MOUNT_UFS; | |
ea301039 | 431 | mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; |
82161bc8 | 432 | mp->mnt_flag |= MNT_LOCAL; |
7188ac27 KM |
433 | ump->um_mountp = mp; |
434 | ump->um_dev = dev; | |
435 | ump->um_devvp = devvp; | |
3614593e MS |
436 | ump->um_nindir = fs->fs_nindir; |
437 | ump->um_bptrtodb = fs->fs_fsbtodb; | |
438 | ump->um_seqinc = fs->fs_frag; | |
8dc876c1 KM |
439 | for (i = 0; i < MAXQUOTAS; i++) |
440 | ump->um_quotas[i] = NULLVP; | |
0f93ba7b | 441 | devvp->v_specflags |= SI_MOUNTEDON; |
a79eb26d KM |
442 | ffs_oldfscompat(fs); |
443 | return (0); | |
444 | out: | |
445 | if (bp) | |
446 | brelse(bp); | |
447 | (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p); | |
448 | if (ump) { | |
449 | free(ump->um_fs, M_UFSMNT); | |
450 | free(ump, M_UFSMNT); | |
451 | mp->mnt_data = (qaddr_t)0; | |
452 | } | |
453 | return (error); | |
454 | } | |
455 | ||
456 | /* | |
457 | * Sanity checks for old file systems. | |
458 | * | |
459 | * XXX - goes away some day. | |
460 | */ | |
461 | ffs_oldfscompat(fs) | |
462 | struct fs *fs; | |
463 | { | |
464 | int i; | |
7188ac27 | 465 | |
2a4eff84 JSP |
466 | fs->fs_npsect = max(fs->fs_npsect, fs->fs_nsect); /* XXX */ |
467 | fs->fs_interleave = max(fs->fs_interleave, 1); /* XXX */ | |
2af59000 KM |
468 | if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ |
469 | fs->fs_nrpos = 8; /* XXX */ | |
4605fb61 KM |
470 | if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ |
471 | quad_t sizepb = fs->fs_bsize; /* XXX */ | |
472 | /* XXX */ | |
473 | fs->fs_maxfilesize = fs->fs_bsize * NDADDR - 1; /* XXX */ | |
474 | for (i = 0; i < NIADDR; i++) { /* XXX */ | |
475 | sizepb *= NINDIR(fs); /* XXX */ | |
476 | fs->fs_maxfilesize += sizepb; /* XXX */ | |
477 | } /* XXX */ | |
478 | fs->fs_qbmask = ~fs->fs_bmask; /* XXX */ | |
479 | fs->fs_qfmask = ~fs->fs_fmask; /* XXX */ | |
480 | } /* XXX */ | |
609e7cfa | 481 | |
7188ac27 | 482 | return (0); |
71e4e98b SL |
483 | } |
484 | ||
7188ac27 KM |
485 | /* |
486 | * unmount system call | |
487 | */ | |
ab9f4fb0 KB |
488 | int |
489 | ffs_unmount(mp, mntflags, p) | |
7188ac27 | 490 | struct mount *mp; |
8dc876c1 | 491 | int mntflags; |
0eb6f54a | 492 | struct proc *p; |
71e4e98b | 493 | { |
7188ac27 | 494 | register struct ufsmount *ump; |
71e4e98b | 495 | register struct fs *fs; |
a79eb26d | 496 | int error, flags, ronly; |
71e4e98b | 497 | |
6b50a7c5 | 498 | flags = 0; |
87be6db2 | 499 | if (mntflags & MNT_FORCE) { |
a79eb26d | 500 | if (mp == rootfs) |
87be6db2 | 501 | return (EINVAL); |
8dc876c1 | 502 | flags |= FORCECLOSE; |
87be6db2 | 503 | } |
a79eb26d KM |
504 | if (error = ffs_flushfiles(mp, flags, p)) |
505 | return (error); | |
506 | ump = VFSTOUFS(mp); | |
507 | fs = ump->um_fs; | |
508 | ronly = !fs->fs_ronly; | |
509 | ump->um_devvp->v_specflags &= ~SI_MOUNTEDON; | |
510 | error = VOP_CLOSE(ump->um_devvp, ronly ? FREAD : FREAD|FWRITE, | |
511 | NOCRED, p); | |
512 | vrele(ump->um_devvp); | |
513 | free(fs->fs_csp[0], M_UFSMNT); | |
514 | free(fs, M_UFSMNT); | |
515 | free(ump, M_UFSMNT); | |
516 | mp->mnt_data = (qaddr_t)0; | |
517 | mp->mnt_flag &= ~MNT_LOCAL; | |
518 | return (error); | |
519 | } | |
520 | ||
521 | /* | |
522 | * Flush out all the files in a filesystem. | |
523 | */ | |
524 | ffs_flushfiles(mp, flags, p) | |
525 | register struct mount *mp; | |
526 | int flags; | |
527 | struct proc *p; | |
528 | { | |
529 | extern int doforce; | |
530 | register struct ufsmount *ump; | |
531 | int i, error; | |
532 | ||
533 | if (!doforce) | |
534 | flags &= ~FORCECLOSE; | |
7188ac27 | 535 | ump = VFSTOUFS(mp); |
ec67a3ce | 536 | return (error); |
71e4e98b | 537 | #ifdef QUOTA |
82161bc8 | 538 | if (mp->mnt_flag & MNT_QUOTA) { |
8dc876c1 | 539 | if (error = vflush(mp, NULLVP, SKIPSYSTEM|flags)) |
6d943995 | 540 | return (error); |
8dc876c1 KM |
541 | for (i = 0; i < MAXQUOTAS; i++) { |
542 | if (ump->um_quotas[i] == NULLVP) | |
543 | continue; | |
70a360ba | 544 | quotaoff(p, mp, i); |
8dc876c1 | 545 | } |
6d943995 | 546 | /* |
8dc876c1 KM |
547 | * Here we fall through to vflush again to ensure |
548 | * that we have gotten rid of all the system vnodes. | |
6d943995 | 549 | */ |
8dc876c1 | 550 | } |
71e4e98b | 551 | #endif |
7188ac27 KM |
552 | * Get file system statistics. |
553 | */ | |
ab9f4fb0 KB |
554 | int |
555 | ffs_statfs(mp, sbp, p) | |
7188ac27 KM |
556 | struct mount *mp; |
557 | register struct statfs *sbp; | |
0eb6f54a | 558 | struct proc *p; |
7188ac27 KM |
559 | { |
560 | register struct ufsmount *ump; | |
561 | register struct fs *fs; | |
562 | ||
563 | ump = VFSTOUFS(mp); | |
564 | fs = ump->um_fs; | |
565 | if (fs->fs_magic != FS_MAGIC) | |
ab9f4fb0 | 566 | panic("ffs_statfs"); |
7188ac27 | 567 | sbp->f_type = MOUNT_UFS; |
06445aba KM |
568 | sbp->f_bsize = fs->fs_fsize; |
569 | sbp->f_iosize = fs->fs_bsize; | |
7188ac27 KM |
570 | sbp->f_blocks = fs->fs_dsize; |
571 | sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag + | |
572 | fs->fs_cstotal.cs_nffree; | |
573 | sbp->f_bavail = (fs->fs_dsize * (100 - fs->fs_minfree) / 100) - | |
574 | (fs->fs_dsize - sbp->f_bfree); | |
5c41c19e | 575 | sbp->f_files = fs->fs_ncg * fs->fs_ipg - ROOTINO; |
7188ac27 | 576 | sbp->f_ffree = fs->fs_cstotal.cs_nifree; |
82161bc8 KM |
577 | if (sbp != &mp->mnt_stat) { |
578 | bcopy((caddr_t)mp->mnt_stat.f_mntonname, | |
d45de50d | 579 | (caddr_t)&sbp->f_mntonname[0], MNAMELEN); |
82161bc8 | 580 | bcopy((caddr_t)mp->mnt_stat.f_mntfromname, |
d45de50d KM |
581 | (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); |
582 | } | |
7188ac27 KM |
583 | return (0); |
584 | } | |
585 | ||
7188ac27 KM |
586 | /* |
587 | * Go through the disk queues to initiate sandbagged IO; | |
588 | * go through the inodes to write those that have been modified; | |
589 | * initiate the writing of the super block if it has been modified. | |
8dc876c1 KM |
590 | * |
591 | * Note: we are always called with the filesystem marked `MPBUSY'. | |
7188ac27 | 592 | */ |
ab9f4fb0 | 593 | int |
6b50a7c5 | 594 | ffs_sync(mp, waitfor, cred, p) |
71e4e98b | 595 | struct mount *mp; |
7188ac27 | 596 | int waitfor; |
6b50a7c5 KM |
597 | struct ucred *cred; |
598 | struct proc *p; | |
71e4e98b | 599 | { |
31593ba7 | 600 | register struct vnode *vp; |
7188ac27 KM |
601 | register struct inode *ip; |
602 | register struct ufsmount *ump = VFSTOUFS(mp); | |
603 | register struct fs *fs; | |
812b91f3 | 604 | int error, allerror = 0; |
7188ac27 | 605 | |
7188ac27 | 606 | fs = ump->um_fs; |
7188ac27 KM |
607 | /* |
608 | * Write back modified superblock. | |
609 | * Consistency check that the superblock | |
610 | * is still in the buffer cache. | |
611 | */ | |
612 | if (fs->fs_fmod != 0) { | |
613 | if (fs->fs_ronly != 0) { /* XXX */ | |
614 | printf("fs = %s\n", fs->fs_fsmnt); | |
615 | panic("update: rofs mod"); | |
616 | } | |
617 | fs->fs_fmod = 0; | |
618 | fs->fs_time = time.tv_sec; | |
ab9f4fb0 | 619 | allerror = ffs_sbupdate(ump, waitfor); |
7188ac27 KM |
620 | } |
621 | /* | |
622 | * Write back each (modified) inode. | |
623 | */ | |
25b5cf58 | 624 | loop: |
a242f429 KM |
625 | for (vp = mp->mnt_mounth; vp; vp = vp->v_mountf) { |
626 | /* | |
627 | * If the vnode that we are about to sync is no longer | |
628 | * associated with this mount point, start over. | |
629 | */ | |
630 | if (vp->v_mount != mp) | |
631 | goto loop; | |
d85a9d1b KM |
632 | if (VOP_ISLOCKED(vp)) |
633 | continue; | |
31593ba7 | 634 | ip = VTOI(vp); |
25b5cf58 | 635 | if ((ip->i_flag & (IMOD|IACC|IUPD|ICHG)) == 0 && |
bd60d0f0 | 636 | vp->v_dirtyblkhd.le_next == NULL) |
7188ac27 | 637 | continue; |
25b5cf58 KM |
638 | if (vget(vp)) |
639 | goto loop; | |
6b50a7c5 | 640 | if (error = VOP_FSYNC(vp, cred, waitfor, p)) |
812b91f3 KM |
641 | allerror = error; |
642 | vput(vp); | |
7188ac27 | 643 | } |
7188ac27 | 644 | /* |
5d96a9ad | 645 | * Force stale file system control information to be flushed. |
7188ac27 | 646 | */ |
6b50a7c5 KM |
647 | if (error = VOP_FSYNC(ump->um_devvp, cred, waitfor, p)) |
648 | allerror = error; | |
8dc876c1 KM |
649 | #ifdef QUOTA |
650 | qsync(mp); | |
651 | #endif | |
812b91f3 | 652 | return (allerror); |
7188ac27 KM |
653 | } |
654 | ||
067ae075 KM |
655 | /* |
656 | * Look up a FFS dinode number to find its incore vnode. | |
657 | * If it is not in core, read it in from the specified device. | |
658 | * If it is in core, wait for the lock bit to clear, then | |
659 | * return the inode locked. Detection and handling of mount | |
660 | * points must be done by the calling routine. | |
661 | */ | |
662 | int | |
663 | ffs_vget(mp, ino, vpp) | |
664 | struct mount *mp; | |
665 | ino_t ino; | |
666 | struct vnode **vpp; | |
667 | { | |
668 | register struct fs *fs; | |
669 | register struct inode *ip; | |
670 | struct ufsmount *ump; | |
671 | struct buf *bp; | |
672 | struct dinode *dp; | |
673 | struct vnode *vp; | |
674 | union ihead *ih; | |
675 | dev_t dev; | |
676 | int i, type, error; | |
677 | ||
678 | ump = VFSTOUFS(mp); | |
679 | dev = ump->um_dev; | |
680 | if ((*vpp = ufs_ihashget(dev, ino)) != NULL) | |
681 | return (0); | |
682 | ||
683 | /* Allocate a new vnode/inode. */ | |
684 | if (error = getnewvnode(VT_UFS, mp, ffs_vnodeop_p, &vp)) { | |
685 | *vpp = NULL; | |
686 | return (error); | |
687 | } | |
688 | type = ump->um_devvp->v_tag == VT_MFS ? M_MFSNODE : M_FFSNODE; /* XXX */ | |
689 | MALLOC(ip, struct inode *, sizeof(struct inode), type, M_WAITOK); | |
690 | vp->v_data = ip; | |
691 | ip->i_vnode = vp; | |
692 | ip->i_flag = 0; | |
693 | ip->i_devvp = 0; | |
694 | ip->i_mode = 0; | |
695 | ip->i_diroff = 0; | |
696 | ip->i_lockf = 0; | |
697 | ip->i_fs = fs = ump->um_fs; | |
698 | ip->i_dev = dev; | |
699 | ip->i_number = ino; | |
700 | #ifdef QUOTA | |
701 | for (i = 0; i < MAXQUOTAS; i++) | |
702 | ip->i_dquot[i] = NODQUOT; | |
703 | #endif | |
704 | /* | |
705 | * Put it onto its hash chain and lock it so that other requests for | |
706 | * this inode will block if they arrive while we are sleeping waiting | |
707 | * for old data structures to be purged or for the contents of the | |
708 | * disk portion of this inode to be read. | |
709 | */ | |
710 | ufs_ihashins(ip); | |
711 | ||
712 | /* Read in the disk contents for the inode, copy into the inode. */ | |
713 | if (error = bread(ump->um_devvp, fsbtodb(fs, itod(fs, ino)), | |
714 | (int)fs->fs_bsize, NOCRED, &bp)) { | |
715 | /* | |
716 | * The inode does not contain anything useful, so it would | |
717 | * be misleading to leave it on its hash chain. It will be | |
e51f387e | 718 | * returned to the free list by vput(). |
067ae075 | 719 | */ |
af9ac048 | 720 | ufs_ihashrem(ip); |
067ae075 KM |
721 | |
722 | /* Unlock and discard unneeded inode. */ | |
e51f387e | 723 | vput(vp); |
067ae075 KM |
724 | brelse(bp); |
725 | *vpp = NULL; | |
726 | return (error); | |
727 | } | |
728 | dp = bp->b_un.b_dino; | |
729 | dp += itoo(fs, ino); | |
730 | ip->i_din = *dp; | |
731 | brelse(bp); | |
732 | ||
733 | /* | |
734 | * Initialize the vnode from the inode, check for aliases. | |
735 | * Note that the underlying vnode may have changed. | |
736 | */ | |
737 | if (error = ufs_vinit(mp, ffs_specop_p, FFS_FIFOOPS, &vp)) { | |
e51f387e | 738 | vput(vp); |
067ae075 KM |
739 | *vpp = NULL; |
740 | return (error); | |
741 | } | |
742 | /* | |
743 | * Finish inode initialization now that aliasing has been resolved. | |
744 | */ | |
745 | ip->i_devvp = ump->um_devvp; | |
746 | VREF(ip->i_devvp); | |
747 | /* | |
748 | * Set up a generation number for this inode if it does not | |
749 | * already have one. This should only happen on old filesystems. | |
750 | */ | |
751 | if (ip->i_gen == 0) { | |
752 | if (++nextgennumber < (u_long)time.tv_sec) | |
753 | nextgennumber = time.tv_sec; | |
754 | ip->i_gen = nextgennumber; | |
755 | if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) | |
756 | ip->i_flag |= IMOD; | |
757 | } | |
758 | /* | |
759 | * Ensure that uid and gid are correct. This is a temporary | |
760 | * fix until fsck has been changed to do the update. | |
761 | */ | |
762 | if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ | |
763 | ip->i_uid = ip->i_din.di_ouid; /* XXX */ | |
764 | ip->i_gid = ip->i_din.di_ogid; /* XXX */ | |
765 | } /* XXX */ | |
766 | ||
767 | *vpp = vp; | |
768 | return (0); | |
769 | } | |
770 | ||
a9013e03 KM |
771 | /* |
772 | * File handle to vnode | |
773 | * | |
774 | * Have to be really careful about stale file handles: | |
775 | * - check that the inode number is valid | |
776 | * - call ffs_vget() to get the locked inode | |
777 | * - check for an unallocated inode (i_mode == 0) | |
03f3a6e4 KM |
778 | * - check that the given client host has export rights and return |
779 | * those rights via. exflagsp and credanonp | |
a9013e03 KM |
780 | */ |
781 | int | |
03f3a6e4 | 782 | ffs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp) |
a9013e03 KM |
783 | register struct mount *mp; |
784 | struct fid *fhp; | |
03f3a6e4 | 785 | struct mbuf *nam; |
a9013e03 | 786 | struct vnode **vpp; |
03f3a6e4 KM |
787 | int *exflagsp; |
788 | struct ucred **credanonp; | |
a9013e03 | 789 | { |
a9013e03 KM |
790 | register struct ufid *ufhp; |
791 | struct fs *fs; | |
a9013e03 KM |
792 | |
793 | ufhp = (struct ufid *)fhp; | |
9e4a3a4a | 794 | fs = VFSTOUFS(mp)->um_fs; |
a9013e03 KM |
795 | if (ufhp->ufid_ino < ROOTINO || |
796 | ufhp->ufid_ino >= fs->fs_ncg * fs->fs_ipg) | |
03f3a6e4 | 797 | return (ESTALE); |
485cf2ee | 798 | return (ufs_check_export(mp, ufhp, nam, vpp, exflagsp, credanonp)); |
a9013e03 KM |
799 | } |
800 | ||
801 | /* | |
802 | * Vnode pointer to File handle | |
803 | */ | |
804 | /* ARGSUSED */ | |
805 | ffs_vptofh(vp, fhp) | |
806 | struct vnode *vp; | |
807 | struct fid *fhp; | |
808 | { | |
809 | register struct inode *ip; | |
810 | register struct ufid *ufhp; | |
811 | ||
812 | ip = VTOI(vp); | |
813 | ufhp = (struct ufid *)fhp; | |
814 | ufhp->ufid_len = sizeof(struct ufid); | |
815 | ufhp->ufid_ino = ip->i_number; | |
816 | ufhp->ufid_gen = ip->i_gen; | |
817 | return (0); | |
818 | } | |
819 | ||
7188ac27 KM |
820 | /* |
821 | * Write a superblock and associated information back to disk. | |
822 | */ | |
06445aba | 823 | int |
ab9f4fb0 | 824 | ffs_sbupdate(mp, waitfor) |
7188ac27 KM |
825 | struct ufsmount *mp; |
826 | int waitfor; | |
827 | { | |
828 | register struct fs *fs = mp->um_fs; | |
71e4e98b SL |
829 | register struct buf *bp; |
830 | int blks; | |
831 | caddr_t space; | |
7188ac27 | 832 | int i, size, error = 0; |
71e4e98b | 833 | |
ec67a3ce MK |
834 | #ifdef SECSIZE |
835 | bp = getblk(mp->m_dev, (daddr_t)fsbtodb(fs, SBOFF / fs->fs_fsize), | |
836 | (int)fs->fs_sbsize, fs->fs_dbsize); | |
837 | #else SECSIZE | |
646464db | 838 | bp = getblk(mp->um_devvp, SBLOCK, (int)fs->fs_sbsize, 0, 0); |
ec67a3ce | 839 | #endif SECSIZE |
71e4e98b | 840 | bcopy((caddr_t)fs, bp->b_un.b_addr, (u_int)fs->fs_sbsize); |
2af59000 KM |
841 | /* Restore compatibility to old file systems. XXX */ |
842 | if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ | |
843 | bp->b_un.b_fs->fs_nrpos = -1; /* XXX */ | |
ec67a3ce MK |
844 | #ifdef SECSIZE |
845 | #ifdef tahoe | |
846 | /* restore standard fsbtodb shift */ | |
847 | bp->b_un.b_fs->fs_fsbtodb = fs->fs_sparecon[0]; | |
848 | bp->b_un.b_fs->fs_sparecon[0] = 0; | |
849 | #endif | |
850 | #endif SECSIZE | |
7188ac27 KM |
851 | if (waitfor == MNT_WAIT) |
852 | error = bwrite(bp); | |
853 | else | |
854 | bawrite(bp); | |
71e4e98b SL |
855 | blks = howmany(fs->fs_cssize, fs->fs_fsize); |
856 | space = (caddr_t)fs->fs_csp[0]; | |
857 | for (i = 0; i < blks; i += fs->fs_frag) { | |
858 | size = fs->fs_bsize; | |
859 | if (i + fs->fs_frag > blks) | |
860 | size = (blks - i) * fs->fs_fsize; | |
ec67a3ce MK |
861 | #ifdef SECSIZE |
862 | bp = getblk(mp->m_dev, fsbtodb(fs, fs->fs_csaddr + i), size, | |
863 | fs->fs_dbsize); | |
864 | #else SECSIZE | |
646464db KM |
865 | bp = getblk(mp->um_devvp, fsbtodb(fs, fs->fs_csaddr + i), |
866 | size, 0, 0); | |
ec67a3ce | 867 | #endif SECSIZE |
71e4e98b SL |
868 | bcopy(space, bp->b_un.b_addr, (u_int)size); |
869 | space += size; | |
7188ac27 KM |
870 | if (waitfor == MNT_WAIT) |
871 | error = bwrite(bp); | |
872 | else | |
873 | bawrite(bp); | |
71e4e98b | 874 | } |
7188ac27 | 875 | return (error); |
71e4e98b | 876 | } |