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 | * |
ea301039 | 7 | * @(#)ffs_vfsops.c 7.67 (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> | |
16 | #include <sys/specdev.h> | |
17 | #include <sys/mount.h> | |
18 | #include <sys/buf.h> | |
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> | |
609e7cfa MK |
24 | #include "ioctl.h" |
25 | #include "disklabel.h" | |
26 | #include "stat.h" | |
71e4e98b | 27 | |
ab9f4fb0 KB |
28 | #include <ufs/ufs/quota.h> |
29 | #include <ufs/ufs/ufsmount.h> | |
30 | #include <ufs/ufs/inode.h> | |
31 | #include <ufs/ufs/ufs_extern.h> | |
32 | ||
33 | #include <ufs/ffs/fs.h> | |
34 | #include <ufs/ffs/ffs_extern.h> | |
35 | ||
06445aba | 36 | int ffs_sbupdate __P((struct ufsmount *, int)); |
c6f5111d | 37 | |
7188ac27 | 38 | struct vfsops ufs_vfsops = { |
ab9f4fb0 | 39 | ffs_mount, |
5bf9d21f | 40 | ufs_start, |
ab9f4fb0 | 41 | ffs_unmount, |
a9013e03 | 42 | ffs_root, |
8dc876c1 | 43 | ufs_quotactl, |
ab9f4fb0 KB |
44 | ffs_statfs, |
45 | ffs_sync, | |
a9013e03 KM |
46 | ffs_fhtovp, |
47 | ffs_vptofh, | |
ab9f4fb0 | 48 | ffs_init, |
7188ac27 KM |
49 | }; |
50 | ||
7188ac27 | 51 | /* |
4ac55ebc | 52 | * Called by main() when ufs is going to be mounted as root. |
7188ac27 | 53 | * |
d48157d5 | 54 | * Name is updated by mount(8) after booting. |
7188ac27 | 55 | */ |
8a4911ca | 56 | #define ROOTNAME "root_device" |
7188ac27 | 57 | |
ab9f4fb0 | 58 | ffs_mountroot() |
71e4e98b | 59 | { |
7188ac27 | 60 | extern struct vnode *rootvp; |
ab9f4fb0 KB |
61 | register struct fs *fs; |
62 | register struct mount *mp; | |
0eb6f54a | 63 | struct proc *p = curproc; /* XXX */ |
7188ac27 | 64 | struct ufsmount *ump; |
7188ac27 KM |
65 | u_int size; |
66 | int error; | |
71e4e98b | 67 | |
4ac55ebc | 68 | mp = malloc((u_long)sizeof(struct mount), M_MOUNT, M_WAITOK); |
ea301039 | 69 | bzero((char *)mp, (u_long)sizeof(struct mount)); |
82161bc8 KM |
70 | mp->mnt_op = &ufs_vfsops; |
71 | mp->mnt_flag = MNT_RDONLY; | |
ab9f4fb0 KB |
72 | if (error = ffs_mountfs(rootvp, mp, p)) { |
73 | free(mp, M_MOUNT); | |
7188ac27 | 74 | return (error); |
71e4e98b | 75 | } |
d48157d5 | 76 | if (error = vfs_lock(mp)) { |
ab9f4fb0 KB |
77 | (void)ffs_unmount(mp, 0, p); |
78 | free(mp, M_MOUNT); | |
7188ac27 | 79 | return (error); |
6d07f4cd | 80 | } |
d48157d5 | 81 | rootfs = mp; |
82161bc8 KM |
82 | mp->mnt_next = mp; |
83 | mp->mnt_prev = mp; | |
84 | mp->mnt_vnodecovered = NULLVP; | |
7188ac27 KM |
85 | ump = VFSTOUFS(mp); |
86 | fs = ump->um_fs; | |
d45de50d | 87 | bzero(fs->fs_fsmnt, sizeof(fs->fs_fsmnt)); |
7188ac27 | 88 | fs->fs_fsmnt[0] = '/'; |
82161bc8 KM |
89 | bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, |
90 | MNAMELEN); | |
91 | (void) copystr(ROOTNAME, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, | |
92 | &size); | |
93 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
ab9f4fb0 | 94 | (void)ffs_statfs(mp, &mp->mnt_stat, p); |
7188ac27 KM |
95 | vfs_unlock(mp); |
96 | inittodr(fs->fs_time); | |
97 | return (0); | |
98 | } | |
99 | ||
100 | /* | |
101 | * VFS Operations. | |
102 | * | |
103 | * mount system call | |
104 | */ | |
06445aba | 105 | int |
ab9f4fb0 | 106 | ffs_mount(mp, path, data, ndp, p) |
d45de50d | 107 | register struct mount *mp; |
7188ac27 KM |
108 | char *path; |
109 | caddr_t data; | |
110 | struct nameidata *ndp; | |
0eb6f54a | 111 | struct proc *p; |
7188ac27 KM |
112 | { |
113 | struct vnode *devvp; | |
114 | struct ufs_args args; | |
115 | struct ufsmount *ump; | |
116 | register struct fs *fs; | |
117 | u_int size; | |
118 | int error; | |
119 | ||
120 | if (error = copyin(data, (caddr_t)&args, sizeof (struct ufs_args))) | |
121 | return (error); | |
190244fb MK |
122 | /* |
123 | * If updating, check whether changing from read-only to | |
124 | * read/write; if there is no device name, that's all we do. | |
125 | */ | |
126 | if (mp->mnt_flag & MNT_UPDATE) { | |
d48157d5 KM |
127 | ump = VFSTOUFS(mp); |
128 | fs = ump->um_fs; | |
82161bc8 | 129 | if (fs->fs_ronly && (mp->mnt_flag & MNT_RDONLY) == 0) |
d48157d5 | 130 | fs->fs_ronly = 0; |
c906fba1 KM |
131 | if (args.fspec == 0) { |
132 | /* | |
133 | * Process export requests. | |
134 | */ | |
135 | if (args.exflags & MNT_EXPORTED) { | |
136 | if (error = hang_addrlist(mp, &args)) | |
137 | return (error); | |
138 | mp->mnt_flag |= MNT_EXPORTED; | |
139 | } | |
140 | if (args.exflags & MNT_DELEXPORT) { | |
141 | free_addrlist(ump); | |
142 | mp->mnt_flag &= | |
143 | ~(MNT_EXPORTED | MNT_DEFEXPORTED); | |
144 | } | |
3b931949 | 145 | return (0); |
c906fba1 | 146 | } |
190244fb MK |
147 | } |
148 | /* | |
149 | * Not an update, or updating the name: look up the name | |
150 | * and verify that it refers to a sensible block device. | |
151 | */ | |
995e59df KM |
152 | NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); |
153 | if (error = namei(ndp)) | |
190244fb MK |
154 | return (error); |
155 | devvp = ndp->ni_vp; | |
ab9f4fb0 | 156 | |
190244fb MK |
157 | if (devvp->v_type != VBLK) { |
158 | vrele(devvp); | |
159 | return (ENOTBLK); | |
160 | } | |
161 | if (major(devvp->v_rdev) >= nblkdev) { | |
162 | vrele(devvp); | |
163 | return (ENXIO); | |
164 | } | |
165 | if ((mp->mnt_flag & MNT_UPDATE) == 0) | |
ab9f4fb0 | 166 | error = ffs_mountfs(devvp, mp, p); |
190244fb | 167 | else { |
d48157d5 KM |
168 | if (devvp != ump->um_devvp) |
169 | error = EINVAL; /* needs translation */ | |
2a7dbb09 KM |
170 | else |
171 | vrele(devvp); | |
d48157d5 | 172 | } |
7188ac27 KM |
173 | if (error) { |
174 | vrele(devvp); | |
175 | return (error); | |
27d00e76 | 176 | } |
7188ac27 KM |
177 | ump = VFSTOUFS(mp); |
178 | fs = ump->um_fs; | |
179 | (void) copyinstr(path, fs->fs_fsmnt, sizeof(fs->fs_fsmnt) - 1, &size); | |
180 | bzero(fs->fs_fsmnt + size, sizeof(fs->fs_fsmnt) - size); | |
82161bc8 KM |
181 | bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, |
182 | MNAMELEN); | |
183 | (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, | |
184 | &size); | |
185 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
ab9f4fb0 | 186 | (void)ffs_statfs(mp, &mp->mnt_stat, p); |
7188ac27 | 187 | return (0); |
71e4e98b SL |
188 | } |
189 | ||
7188ac27 KM |
190 | /* |
191 | * Common code for mount and mountroot | |
192 | */ | |
ab9f4fb0 KB |
193 | int |
194 | ffs_mountfs(devvp, mp, p) | |
1182ae61 | 195 | register struct vnode *devvp; |
7188ac27 | 196 | struct mount *mp; |
0eb6f54a | 197 | struct proc *p; |
71e4e98b | 198 | { |
9342689a JH |
199 | USES_VOP_CLOSE; |
200 | USES_VOP_IOCTL; | |
201 | USES_VOP_OPEN; | |
8dc876c1 | 202 | register struct ufsmount *ump = (struct ufsmount *)0; |
7188ac27 | 203 | struct buf *bp = NULL; |
71e4e98b | 204 | register struct fs *fs; |
7188ac27 | 205 | dev_t dev = devvp->v_rdev; |
ec67a3ce MK |
206 | struct partinfo dpart; |
207 | int havepart = 0, blks; | |
27d00e76 | 208 | caddr_t base, space; |
7188ac27 KM |
209 | int havepart = 0, blks; |
210 | int error, i, size; | |
6d07f4cd | 211 | int needclose = 0; |
82161bc8 | 212 | int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; |
1c26e003 | 213 | extern struct vnode *rootvp; |
71e4e98b | 214 | |
0eb6f54a | 215 | if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p)) |
7188ac27 | 216 | return (error); |
6d07f4cd | 217 | needclose = 1; |
0eb6f54a | 218 | if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, NOCRED, p) != 0) |
609e7cfa | 219 | size = DEV_BSIZE; |
0eb6f54a | 220 | else { |
ec67a3ce MK |
221 | havepart = 1; |
222 | size = dpart.disklab->d_secsize; | |
7188ac27 | 223 | } |
8dc876c1 | 224 | if (error = bread(devvp, SBLOCK, SBSIZE, NOCRED, &bp)) |
71e4e98b | 225 | goto out; |
e018935f | 226 | fs = bp->b_un.b_fs; |
8dc876c1 | 227 | error = EINVAL; /* XXX needs translation */ |
1c281610 MK |
228 | goto out; |
229 | } | |
ab9f4fb0 | 230 | ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK); |
7bff53ea | 231 | bzero((caddr_t)ump, sizeof *ump); |
b1ca3fbf | 232 | ump->um_fs = malloc((u_long)fs->fs_sbsize, M_UFSMNT, |
5adcb337 | 233 | M_WAITOK); |
7188ac27 | 234 | bcopy((caddr_t)bp->b_un.b_addr, (caddr_t)ump->um_fs, |
71e4e98b | 235 | (u_int)fs->fs_sbsize); |
5d96a9ad KM |
236 | if (fs->fs_sbsize < SBSIZE) |
237 | bp->b_flags |= B_INVAL; | |
e018935f MK |
238 | brelse(bp); |
239 | bp = NULL; | |
7188ac27 KM |
240 | fs = ump->um_fs; |
241 | fs->fs_ronly = ronly; | |
71e4e98b SL |
242 | if (ronly == 0) |
243 | fs->fs_fmod = 1; | |
609e7cfa MK |
244 | if (havepart) { |
245 | dpart.part->p_fstype = FS_BSDFFS; | |
246 | dpart.part->p_fsize = fs->fs_fsize; | |
247 | dpart.part->p_frag = fs->fs_frag; | |
42ff4c2e | 248 | dpart.part->p_cpg = fs->fs_cpg; |
609e7cfa | 249 | } |
ec67a3ce MK |
250 | #ifdef SECSIZE |
251 | /* | |
252 | * If we have a disk label, force per-partition | |
253 | * filesystem information to be correct | |
254 | * and set correct current fsbtodb shift. | |
255 | */ | |
256 | #endif SECSIZE | |
257 | if (havepart) { | |
258 | dpart.part->p_fstype = FS_BSDFFS; | |
259 | dpart.part->p_fsize = fs->fs_fsize; | |
260 | dpart.part->p_frag = fs->fs_frag; | |
261 | #ifdef SECSIZE | |
262 | #ifdef tahoe | |
263 | /* | |
264 | * Save the original fsbtodb shift to restore on updates. | |
265 | * (Console doesn't understand fsbtodb changes.) | |
266 | */ | |
267 | fs->fs_sparecon[0] = fs->fs_fsbtodb; | |
268 | #endif | |
269 | i = fs->fs_fsize / size; | |
270 | for (fs->fs_fsbtodb = 0; i > 1; i >>= 1) | |
271 | fs->fs_fsbtodb++; | |
272 | #endif SECSIZE | |
273 | fs->fs_dbsize = size; | |
274 | } | |
71e4e98b | 275 | blks = howmany(fs->fs_cssize, fs->fs_fsize); |
b1ca3fbf | 276 | base = space = malloc((u_long)fs->fs_cssize, M_UFSMNT, |
5adcb337 | 277 | M_WAITOK); |
71e4e98b SL |
278 | for (i = 0; i < blks; i += fs->fs_frag) { |
279 | size = fs->fs_bsize; | |
280 | if (i + fs->fs_frag > blks) | |
281 | size = (blks - i) * fs->fs_fsize; | |
ec67a3ce MK |
282 | #ifdef SECSIZE |
283 | tp = bread(dev, fsbtodb(fs, fs->fs_csaddr + i), size, | |
284 | fs->fs_dbsize); | |
285 | #else SECSIZE | |
a937f856 KM |
286 | error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, |
287 | NOCRED, &bp); | |
7188ac27 | 288 | if (error) { |
b1ca3fbf | 289 | free(base, M_UFSMNT); |
71e4e98b SL |
290 | goto out; |
291 | } | |
e018935f | 292 | bcopy((caddr_t)bp->b_un.b_addr, space, (u_int)size); |
60f9c9e3 | 293 | fs->fs_csp[fragstoblks(fs, i)] = (struct csum *)space; |
71e4e98b | 294 | space += size; |
e018935f MK |
295 | brelse(bp); |
296 | bp = NULL; | |
71e4e98b | 297 | } |
82161bc8 KM |
298 | mp->mnt_data = (qaddr_t)ump; |
299 | mp->mnt_stat.f_fsid.val[0] = (long)dev; | |
300 | mp->mnt_stat.f_fsid.val[1] = MOUNT_UFS; | |
ea301039 | 301 | mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; |
82161bc8 | 302 | mp->mnt_flag |= MNT_LOCAL; |
7188ac27 KM |
303 | ump->um_mountp = mp; |
304 | ump->um_dev = dev; | |
305 | ump->um_devvp = devvp; | |
8dc876c1 KM |
306 | for (i = 0; i < MAXQUOTAS; i++) |
307 | ump->um_quotas[i] = NULLVP; | |
0f93ba7b | 308 | devvp->v_specflags |= SI_MOUNTEDON; |
7188ac27 | 309 | |
94354803 KM |
310 | /* Sanity checks for old file systems. XXX */ |
311 | fs->fs_npsect = MAX(fs->fs_npsect, fs->fs_nsect); /* XXX */ | |
312 | fs->fs_interleave = MAX(fs->fs_interleave, 1); /* XXX */ | |
2af59000 KM |
313 | if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ |
314 | fs->fs_nrpos = 8; /* XXX */ | |
4605fb61 KM |
315 | if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ |
316 | quad_t sizepb = fs->fs_bsize; /* XXX */ | |
317 | /* XXX */ | |
318 | fs->fs_maxfilesize = fs->fs_bsize * NDADDR - 1; /* XXX */ | |
319 | for (i = 0; i < NIADDR; i++) { /* XXX */ | |
320 | sizepb *= NINDIR(fs); /* XXX */ | |
321 | fs->fs_maxfilesize += sizepb; /* XXX */ | |
322 | } /* XXX */ | |
323 | fs->fs_qbmask = ~fs->fs_bmask; /* XXX */ | |
324 | fs->fs_qfmask = ~fs->fs_fmask; /* XXX */ | |
325 | } /* XXX */ | |
609e7cfa | 326 | |
7188ac27 | 327 | return (0); |
71e4e98b | 328 | out: |
c86c9b6e KM |
329 | if (bp) |
330 | brelse(bp); | |
609e7cfa | 331 | if (needclose) |
0eb6f54a | 332 | (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p); |
8dc876c1 | 333 | if (ump) { |
b1ca3fbf | 334 | free(ump->um_fs, M_UFSMNT); |
ab9f4fb0 | 335 | free(ump, M_UFSMNT); |
82161bc8 | 336 | mp->mnt_data = (qaddr_t)0; |
27d00e76 | 337 | } |
7188ac27 | 338 | return (error); |
71e4e98b SL |
339 | } |
340 | ||
7188ac27 KM |
341 | /* |
342 | * unmount system call | |
343 | */ | |
ab9f4fb0 KB |
344 | int |
345 | ffs_unmount(mp, mntflags, p) | |
7188ac27 | 346 | struct mount *mp; |
8dc876c1 | 347 | int mntflags; |
0eb6f54a | 348 | struct proc *p; |
71e4e98b | 349 | { |
9342689a | 350 | USES_VOP_CLOSE; |
ab9f4fb0 | 351 | extern int doforce; |
7188ac27 | 352 | register struct ufsmount *ump; |
71e4e98b | 353 | register struct fs *fs; |
8dc876c1 | 354 | int i, error, ronly, flags = 0; |
71e4e98b | 355 | |
87be6db2 | 356 | if (mntflags & MNT_FORCE) { |
d85a9d1b | 357 | if (!doforce || mp == rootfs) |
87be6db2 | 358 | return (EINVAL); |
8dc876c1 | 359 | flags |= FORCECLOSE; |
87be6db2 | 360 | } |
5d96a9ad KM |
361 | mntflushbuf(mp, 0); |
362 | if (mntinvalbuf(mp)) | |
363 | return (EBUSY); | |
7188ac27 | 364 | ump = VFSTOUFS(mp); |
ec67a3ce | 365 | return (error); |
71e4e98b | 366 | #ifdef QUOTA |
82161bc8 | 367 | if (mp->mnt_flag & MNT_QUOTA) { |
8dc876c1 | 368 | if (error = vflush(mp, NULLVP, SKIPSYSTEM|flags)) |
6d943995 | 369 | return (error); |
8dc876c1 KM |
370 | for (i = 0; i < MAXQUOTAS; i++) { |
371 | if (ump->um_quotas[i] == NULLVP) | |
372 | continue; | |
70a360ba | 373 | quotaoff(p, mp, i); |
8dc876c1 | 374 | } |
6d943995 | 375 | /* |
8dc876c1 KM |
376 | * Here we fall through to vflush again to ensure |
377 | * that we have gotten rid of all the system vnodes. | |
6d943995 | 378 | */ |
8dc876c1 | 379 | } |
71e4e98b | 380 | #endif |
8dc876c1 | 381 | if (error = vflush(mp, NULLVP, flags)) |
6d943995 | 382 | return (error); |
7188ac27 KM |
383 | fs = ump->um_fs; |
384 | ronly = !fs->fs_ronly; | |
7188ac27 KM |
385 | * Get file system statistics. |
386 | */ | |
ab9f4fb0 KB |
387 | int |
388 | ffs_statfs(mp, sbp, p) | |
7188ac27 KM |
389 | struct mount *mp; |
390 | register struct statfs *sbp; | |
0eb6f54a | 391 | struct proc *p; |
7188ac27 KM |
392 | { |
393 | register struct ufsmount *ump; | |
394 | register struct fs *fs; | |
395 | ||
396 | ump = VFSTOUFS(mp); | |
397 | fs = ump->um_fs; | |
398 | if (fs->fs_magic != FS_MAGIC) | |
ab9f4fb0 | 399 | panic("ffs_statfs"); |
7188ac27 | 400 | sbp->f_type = MOUNT_UFS; |
06445aba KM |
401 | sbp->f_bsize = fs->fs_fsize; |
402 | sbp->f_iosize = fs->fs_bsize; | |
7188ac27 KM |
403 | sbp->f_blocks = fs->fs_dsize; |
404 | sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag + | |
405 | fs->fs_cstotal.cs_nffree; | |
406 | sbp->f_bavail = (fs->fs_dsize * (100 - fs->fs_minfree) / 100) - | |
407 | (fs->fs_dsize - sbp->f_bfree); | |
5c41c19e | 408 | sbp->f_files = fs->fs_ncg * fs->fs_ipg - ROOTINO; |
7188ac27 | 409 | sbp->f_ffree = fs->fs_cstotal.cs_nifree; |
82161bc8 KM |
410 | if (sbp != &mp->mnt_stat) { |
411 | bcopy((caddr_t)mp->mnt_stat.f_mntonname, | |
d45de50d | 412 | (caddr_t)&sbp->f_mntonname[0], MNAMELEN); |
82161bc8 | 413 | bcopy((caddr_t)mp->mnt_stat.f_mntfromname, |
d45de50d KM |
414 | (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); |
415 | } | |
7188ac27 KM |
416 | return (0); |
417 | } | |
418 | ||
7188ac27 KM |
419 | /* |
420 | * Go through the disk queues to initiate sandbagged IO; | |
421 | * go through the inodes to write those that have been modified; | |
422 | * initiate the writing of the super block if it has been modified. | |
8dc876c1 KM |
423 | * |
424 | * Note: we are always called with the filesystem marked `MPBUSY'. | |
7188ac27 | 425 | */ |
ab9f4fb0 KB |
426 | int |
427 | ffs_sync(mp, waitfor) | |
71e4e98b | 428 | struct mount *mp; |
7188ac27 | 429 | int waitfor; |
71e4e98b | 430 | { |
9342689a JH |
431 | USES_VOP_ISLOCKED; |
432 | USES_VOP_UPDATE; | |
ab9f4fb0 | 433 | extern int syncprt; |
31593ba7 | 434 | register struct vnode *vp; |
7188ac27 KM |
435 | register struct inode *ip; |
436 | register struct ufsmount *ump = VFSTOUFS(mp); | |
437 | register struct fs *fs; | |
812b91f3 | 438 | int error, allerror = 0; |
7188ac27 KM |
439 | |
440 | if (syncprt) | |
ab9f4fb0 | 441 | ufs_bufstats(); |
7188ac27 | 442 | fs = ump->um_fs; |
7188ac27 KM |
443 | /* |
444 | * Write back modified superblock. | |
445 | * Consistency check that the superblock | |
446 | * is still in the buffer cache. | |
447 | */ | |
448 | if (fs->fs_fmod != 0) { | |
449 | if (fs->fs_ronly != 0) { /* XXX */ | |
450 | printf("fs = %s\n", fs->fs_fsmnt); | |
451 | panic("update: rofs mod"); | |
452 | } | |
453 | fs->fs_fmod = 0; | |
454 | fs->fs_time = time.tv_sec; | |
ab9f4fb0 | 455 | allerror = ffs_sbupdate(ump, waitfor); |
7188ac27 KM |
456 | } |
457 | /* | |
458 | * Write back each (modified) inode. | |
459 | */ | |
25b5cf58 | 460 | loop: |
a242f429 KM |
461 | for (vp = mp->mnt_mounth; vp; vp = vp->v_mountf) { |
462 | /* | |
463 | * If the vnode that we are about to sync is no longer | |
464 | * associated with this mount point, start over. | |
465 | */ | |
466 | if (vp->v_mount != mp) | |
467 | goto loop; | |
d85a9d1b KM |
468 | if (VOP_ISLOCKED(vp)) |
469 | continue; | |
31593ba7 | 470 | ip = VTOI(vp); |
25b5cf58 KM |
471 | if ((ip->i_flag & (IMOD|IACC|IUPD|ICHG)) == 0 && |
472 | vp->v_dirtyblkhd == NULL) | |
7188ac27 | 473 | continue; |
25b5cf58 KM |
474 | if (vget(vp)) |
475 | goto loop; | |
476 | if (vp->v_dirtyblkhd) | |
477 | vflushbuf(vp, 0); | |
478 | if ((ip->i_flag & (IMOD|IACC|IUPD|ICHG)) && | |
9342689a | 479 | (error = VOP_UPDATE(vp, &time, &time, 0))) |
812b91f3 KM |
480 | allerror = error; |
481 | vput(vp); | |
7188ac27 | 482 | } |
7188ac27 | 483 | /* |
5d96a9ad | 484 | * Force stale file system control information to be flushed. |
7188ac27 | 485 | */ |
5d96a9ad | 486 | vflushbuf(ump->um_devvp, waitfor == MNT_WAIT ? B_SYNC : 0); |
8dc876c1 KM |
487 | #ifdef QUOTA |
488 | qsync(mp); | |
489 | #endif | |
812b91f3 | 490 | return (allerror); |
7188ac27 KM |
491 | } |
492 | ||
a9013e03 KM |
493 | /* |
494 | * File handle to vnode | |
495 | * | |
496 | * Have to be really careful about stale file handles: | |
497 | * - check that the inode number is valid | |
498 | * - call ffs_vget() to get the locked inode | |
499 | * - check for an unallocated inode (i_mode == 0) | |
c906fba1 | 500 | * - check that the generation number matches unless setgen true |
a9013e03 KM |
501 | */ |
502 | int | |
c906fba1 | 503 | ffs_fhtovp(mp, fhp, setgen, vpp) |
a9013e03 KM |
504 | register struct mount *mp; |
505 | struct fid *fhp; | |
c906fba1 | 506 | int setgen; |
a9013e03 KM |
507 | struct vnode **vpp; |
508 | { | |
9342689a | 509 | USES_VOP_VGET; |
a9013e03 KM |
510 | register struct inode *ip; |
511 | register struct ufid *ufhp; | |
512 | struct fs *fs; | |
513 | struct vnode *nvp; | |
514 | int error; | |
515 | ||
516 | ufhp = (struct ufid *)fhp; | |
517 | fs = VFSTOUFS(mp)->um_fs; | |
518 | if (ufhp->ufid_ino < ROOTINO || | |
519 | ufhp->ufid_ino >= fs->fs_ncg * fs->fs_ipg) | |
520 | return (EINVAL); | |
9342689a | 521 | if (error = FFS_VGET(mp, ufhp->ufid_ino, &nvp)) { |
a9013e03 KM |
522 | *vpp = NULLVP; |
523 | return (error); | |
524 | } | |
525 | ip = VTOI(nvp); | |
526 | if (ip->i_mode == 0) { | |
527 | ufs_iput(ip); | |
528 | *vpp = NULLVP; | |
529 | return (EINVAL); | |
530 | } | |
531 | if (ip->i_gen != ufhp->ufid_gen) { | |
c906fba1 KM |
532 | if (setgen) |
533 | ufhp->ufid_gen = ip->i_gen; | |
534 | else { | |
535 | ufs_iput(ip); | |
536 | *vpp = NULLVP; | |
537 | return (EINVAL); | |
538 | } | |
a9013e03 KM |
539 | } |
540 | *vpp = nvp; | |
541 | return (0); | |
542 | } | |
543 | ||
544 | /* | |
545 | * Vnode pointer to File handle | |
546 | */ | |
547 | /* ARGSUSED */ | |
548 | ffs_vptofh(vp, fhp) | |
549 | struct vnode *vp; | |
550 | struct fid *fhp; | |
551 | { | |
552 | register struct inode *ip; | |
553 | register struct ufid *ufhp; | |
554 | ||
555 | ip = VTOI(vp); | |
556 | ufhp = (struct ufid *)fhp; | |
557 | ufhp->ufid_len = sizeof(struct ufid); | |
558 | ufhp->ufid_ino = ip->i_number; | |
559 | ufhp->ufid_gen = ip->i_gen; | |
560 | return (0); | |
561 | } | |
562 | ||
7188ac27 KM |
563 | /* |
564 | * Write a superblock and associated information back to disk. | |
565 | */ | |
06445aba | 566 | int |
ab9f4fb0 | 567 | ffs_sbupdate(mp, waitfor) |
7188ac27 KM |
568 | struct ufsmount *mp; |
569 | int waitfor; | |
570 | { | |
571 | register struct fs *fs = mp->um_fs; | |
71e4e98b SL |
572 | register struct buf *bp; |
573 | int blks; | |
574 | caddr_t space; | |
7188ac27 | 575 | int i, size, error = 0; |
71e4e98b | 576 | |
ec67a3ce MK |
577 | #ifdef SECSIZE |
578 | bp = getblk(mp->m_dev, (daddr_t)fsbtodb(fs, SBOFF / fs->fs_fsize), | |
579 | (int)fs->fs_sbsize, fs->fs_dbsize); | |
580 | #else SECSIZE | |
7188ac27 | 581 | bp = getblk(mp->um_devvp, SBLOCK, (int)fs->fs_sbsize); |
ec67a3ce | 582 | #endif SECSIZE |
71e4e98b | 583 | bcopy((caddr_t)fs, bp->b_un.b_addr, (u_int)fs->fs_sbsize); |
2af59000 KM |
584 | /* Restore compatibility to old file systems. XXX */ |
585 | if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ | |
586 | bp->b_un.b_fs->fs_nrpos = -1; /* XXX */ | |
ec67a3ce MK |
587 | #ifdef SECSIZE |
588 | #ifdef tahoe | |
589 | /* restore standard fsbtodb shift */ | |
590 | bp->b_un.b_fs->fs_fsbtodb = fs->fs_sparecon[0]; | |
591 | bp->b_un.b_fs->fs_sparecon[0] = 0; | |
592 | #endif | |
593 | #endif SECSIZE | |
7188ac27 KM |
594 | if (waitfor == MNT_WAIT) |
595 | error = bwrite(bp); | |
596 | else | |
597 | bawrite(bp); | |
71e4e98b SL |
598 | blks = howmany(fs->fs_cssize, fs->fs_fsize); |
599 | space = (caddr_t)fs->fs_csp[0]; | |
600 | for (i = 0; i < blks; i += fs->fs_frag) { | |
601 | size = fs->fs_bsize; | |
602 | if (i + fs->fs_frag > blks) | |
603 | size = (blks - i) * fs->fs_fsize; | |
ec67a3ce MK |
604 | #ifdef SECSIZE |
605 | bp = getblk(mp->m_dev, fsbtodb(fs, fs->fs_csaddr + i), size, | |
606 | fs->fs_dbsize); | |
607 | #else SECSIZE | |
7188ac27 | 608 | bp = getblk(mp->um_devvp, fsbtodb(fs, fs->fs_csaddr + i), size); |
ec67a3ce | 609 | #endif SECSIZE |
71e4e98b SL |
610 | bcopy(space, bp->b_un.b_addr, (u_int)size); |
611 | space += size; | |
7188ac27 KM |
612 | if (waitfor == MNT_WAIT) |
613 | error = bwrite(bp); | |
614 | else | |
615 | bawrite(bp); | |
71e4e98b | 616 | } |
7188ac27 | 617 | return (error); |
71e4e98b | 618 | } |