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 | * |
03f3a6e4 | 7 | * @(#)ffs_vfsops.c 7.72 (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> | |
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> | |
03f3a6e4 | 25 | #include <sys/socket.h> |
609e7cfa MK |
26 | #include "ioctl.h" |
27 | #include "disklabel.h" | |
28 | #include "stat.h" | |
71e4e98b | 29 | |
ab9f4fb0 KB |
30 | #include <ufs/ufs/quota.h> |
31 | #include <ufs/ufs/ufsmount.h> | |
32 | #include <ufs/ufs/inode.h> | |
33 | #include <ufs/ufs/ufs_extern.h> | |
34 | ||
35 | #include <ufs/ffs/fs.h> | |
36 | #include <ufs/ffs/ffs_extern.h> | |
37 | ||
06445aba | 38 | int ffs_sbupdate __P((struct ufsmount *, int)); |
c6f5111d | 39 | |
7188ac27 | 40 | struct vfsops ufs_vfsops = { |
ab9f4fb0 | 41 | ffs_mount, |
5bf9d21f | 42 | ufs_start, |
ab9f4fb0 | 43 | ffs_unmount, |
a9013e03 | 44 | ffs_root, |
8dc876c1 | 45 | ufs_quotactl, |
ab9f4fb0 KB |
46 | ffs_statfs, |
47 | ffs_sync, | |
067ae075 | 48 | ffs_vget, |
a9013e03 KM |
49 | ffs_fhtovp, |
50 | ffs_vptofh, | |
ab9f4fb0 | 51 | ffs_init, |
7188ac27 KM |
52 | }; |
53 | ||
067ae075 KM |
54 | extern u_long nextgennumber; |
55 | ||
7188ac27 | 56 | /* |
4ac55ebc | 57 | * Called by main() when ufs is going to be mounted as root. |
7188ac27 | 58 | * |
d48157d5 | 59 | * Name is updated by mount(8) after booting. |
7188ac27 | 60 | */ |
8a4911ca | 61 | #define ROOTNAME "root_device" |
7188ac27 | 62 | |
ab9f4fb0 | 63 | ffs_mountroot() |
71e4e98b | 64 | { |
7188ac27 | 65 | extern struct vnode *rootvp; |
ab9f4fb0 KB |
66 | register struct fs *fs; |
67 | register struct mount *mp; | |
0eb6f54a | 68 | struct proc *p = curproc; /* XXX */ |
7188ac27 | 69 | struct ufsmount *ump; |
7188ac27 KM |
70 | u_int size; |
71 | int error; | |
71e4e98b | 72 | |
4ac55ebc | 73 | mp = malloc((u_long)sizeof(struct mount), M_MOUNT, M_WAITOK); |
ea301039 | 74 | bzero((char *)mp, (u_long)sizeof(struct mount)); |
82161bc8 KM |
75 | mp->mnt_op = &ufs_vfsops; |
76 | mp->mnt_flag = MNT_RDONLY; | |
ab9f4fb0 KB |
77 | if (error = ffs_mountfs(rootvp, mp, p)) { |
78 | free(mp, M_MOUNT); | |
7188ac27 | 79 | return (error); |
71e4e98b | 80 | } |
d48157d5 | 81 | if (error = vfs_lock(mp)) { |
ab9f4fb0 KB |
82 | (void)ffs_unmount(mp, 0, p); |
83 | free(mp, M_MOUNT); | |
7188ac27 | 84 | return (error); |
6d07f4cd | 85 | } |
d48157d5 | 86 | rootfs = mp; |
82161bc8 KM |
87 | mp->mnt_next = mp; |
88 | mp->mnt_prev = mp; | |
89 | mp->mnt_vnodecovered = NULLVP; | |
7188ac27 KM |
90 | ump = VFSTOUFS(mp); |
91 | fs = ump->um_fs; | |
d45de50d | 92 | bzero(fs->fs_fsmnt, sizeof(fs->fs_fsmnt)); |
7188ac27 | 93 | fs->fs_fsmnt[0] = '/'; |
82161bc8 KM |
94 | bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, |
95 | MNAMELEN); | |
96 | (void) copystr(ROOTNAME, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, | |
97 | &size); | |
98 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
ab9f4fb0 | 99 | (void)ffs_statfs(mp, &mp->mnt_stat, p); |
7188ac27 KM |
100 | vfs_unlock(mp); |
101 | inittodr(fs->fs_time); | |
102 | return (0); | |
103 | } | |
104 | ||
105 | /* | |
106 | * VFS Operations. | |
107 | * | |
108 | * mount system call | |
109 | */ | |
06445aba | 110 | int |
ab9f4fb0 | 111 | ffs_mount(mp, path, data, ndp, p) |
d45de50d | 112 | register struct mount *mp; |
7188ac27 KM |
113 | char *path; |
114 | caddr_t data; | |
115 | struct nameidata *ndp; | |
0eb6f54a | 116 | struct proc *p; |
7188ac27 KM |
117 | { |
118 | struct vnode *devvp; | |
119 | struct ufs_args args; | |
120 | struct ufsmount *ump; | |
121 | register struct fs *fs; | |
122 | u_int size; | |
123 | int error; | |
124 | ||
125 | if (error = copyin(data, (caddr_t)&args, sizeof (struct ufs_args))) | |
126 | return (error); | |
190244fb MK |
127 | /* |
128 | * If updating, check whether changing from read-only to | |
129 | * read/write; if there is no device name, that's all we do. | |
130 | */ | |
131 | if (mp->mnt_flag & MNT_UPDATE) { | |
d48157d5 KM |
132 | ump = VFSTOUFS(mp); |
133 | fs = ump->um_fs; | |
82161bc8 | 134 | if (fs->fs_ronly && (mp->mnt_flag & MNT_RDONLY) == 0) |
d48157d5 | 135 | fs->fs_ronly = 0; |
c906fba1 KM |
136 | if (args.fspec == 0) { |
137 | /* | |
138 | * Process export requests. | |
139 | */ | |
140 | if (args.exflags & MNT_EXPORTED) { | |
cb09ceb4 | 141 | if (error = ufs_hang_addrlist(mp, &args)) |
c906fba1 KM |
142 | return (error); |
143 | mp->mnt_flag |= MNT_EXPORTED; | |
144 | } | |
145 | if (args.exflags & MNT_DELEXPORT) { | |
cb09ceb4 | 146 | ufs_free_addrlist(ump); |
c906fba1 KM |
147 | mp->mnt_flag &= |
148 | ~(MNT_EXPORTED | MNT_DEFEXPORTED); | |
149 | } | |
3b931949 | 150 | return (0); |
c906fba1 | 151 | } |
190244fb MK |
152 | } |
153 | /* | |
154 | * Not an update, or updating the name: look up the name | |
155 | * and verify that it refers to a sensible block device. | |
156 | */ | |
995e59df KM |
157 | NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); |
158 | if (error = namei(ndp)) | |
190244fb MK |
159 | return (error); |
160 | devvp = ndp->ni_vp; | |
ab9f4fb0 | 161 | |
190244fb MK |
162 | if (devvp->v_type != VBLK) { |
163 | vrele(devvp); | |
164 | return (ENOTBLK); | |
165 | } | |
166 | if (major(devvp->v_rdev) >= nblkdev) { | |
167 | vrele(devvp); | |
168 | return (ENXIO); | |
169 | } | |
170 | if ((mp->mnt_flag & MNT_UPDATE) == 0) | |
ab9f4fb0 | 171 | error = ffs_mountfs(devvp, mp, p); |
190244fb | 172 | else { |
d48157d5 KM |
173 | if (devvp != ump->um_devvp) |
174 | error = EINVAL; /* needs translation */ | |
2a7dbb09 KM |
175 | else |
176 | vrele(devvp); | |
d48157d5 | 177 | } |
7188ac27 KM |
178 | if (error) { |
179 | vrele(devvp); | |
180 | return (error); | |
27d00e76 | 181 | } |
7188ac27 KM |
182 | ump = VFSTOUFS(mp); |
183 | fs = ump->um_fs; | |
184 | (void) copyinstr(path, fs->fs_fsmnt, sizeof(fs->fs_fsmnt) - 1, &size); | |
185 | bzero(fs->fs_fsmnt + size, sizeof(fs->fs_fsmnt) - size); | |
82161bc8 KM |
186 | bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, |
187 | MNAMELEN); | |
188 | (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, | |
189 | &size); | |
190 | bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); | |
ab9f4fb0 | 191 | (void)ffs_statfs(mp, &mp->mnt_stat, p); |
7188ac27 | 192 | return (0); |
71e4e98b SL |
193 | } |
194 | ||
7188ac27 KM |
195 | /* |
196 | * Common code for mount and mountroot | |
197 | */ | |
ab9f4fb0 KB |
198 | int |
199 | ffs_mountfs(devvp, mp, p) | |
1182ae61 | 200 | register struct vnode *devvp; |
7188ac27 | 201 | struct mount *mp; |
0eb6f54a | 202 | struct proc *p; |
71e4e98b | 203 | { |
6b50a7c5 KM |
204 | register struct ufsmount *ump; |
205 | struct buf *bp; | |
71e4e98b | 206 | register struct fs *fs; |
7188ac27 | 207 | dev_t dev = devvp->v_rdev; |
ec67a3ce MK |
208 | struct partinfo dpart; |
209 | int havepart = 0, blks; | |
27d00e76 | 210 | caddr_t base, space; |
7188ac27 KM |
211 | int havepart = 0, blks; |
212 | int error, i, size; | |
6b50a7c5 | 213 | int ronly; |
1c26e003 | 214 | extern struct vnode *rootvp; |
71e4e98b | 215 | |
0eb6f54a | 216 | if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p)) |
7188ac27 | 217 | return (error); |
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 | } |
6b50a7c5 KM |
224 | |
225 | bp = NULL; | |
226 | ump = NULL; | |
8dc876c1 | 227 | if (error = bread(devvp, SBLOCK, SBSIZE, NOCRED, &bp)) |
71e4e98b | 228 | goto out; |
e018935f | 229 | fs = bp->b_un.b_fs; |
8dc876c1 | 230 | error = EINVAL; /* XXX needs translation */ |
1c281610 MK |
231 | goto out; |
232 | } | |
ab9f4fb0 | 233 | ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK); |
7bff53ea | 234 | bzero((caddr_t)ump, sizeof *ump); |
b1ca3fbf | 235 | ump->um_fs = malloc((u_long)fs->fs_sbsize, M_UFSMNT, |
5adcb337 | 236 | M_WAITOK); |
7188ac27 | 237 | bcopy((caddr_t)bp->b_un.b_addr, (caddr_t)ump->um_fs, |
71e4e98b | 238 | (u_int)fs->fs_sbsize); |
5d96a9ad KM |
239 | if (fs->fs_sbsize < SBSIZE) |
240 | bp->b_flags |= B_INVAL; | |
e018935f MK |
241 | brelse(bp); |
242 | bp = NULL; | |
7188ac27 KM |
243 | fs = ump->um_fs; |
244 | fs->fs_ronly = ronly; | |
71e4e98b SL |
245 | if (ronly == 0) |
246 | fs->fs_fmod = 1; | |
609e7cfa MK |
247 | if (havepart) { |
248 | dpart.part->p_fstype = FS_BSDFFS; | |
249 | dpart.part->p_fsize = fs->fs_fsize; | |
250 | dpart.part->p_frag = fs->fs_frag; | |
42ff4c2e | 251 | dpart.part->p_cpg = fs->fs_cpg; |
609e7cfa | 252 | } |
ec67a3ce MK |
253 | #ifdef SECSIZE |
254 | /* | |
255 | * If we have a disk label, force per-partition | |
256 | * filesystem information to be correct | |
257 | * and set correct current fsbtodb shift. | |
258 | */ | |
259 | #endif SECSIZE | |
260 | if (havepart) { | |
261 | dpart.part->p_fstype = FS_BSDFFS; | |
262 | dpart.part->p_fsize = fs->fs_fsize; | |
263 | dpart.part->p_frag = fs->fs_frag; | |
264 | #ifdef SECSIZE | |
265 | #ifdef tahoe | |
266 | /* | |
267 | * Save the original fsbtodb shift to restore on updates. | |
268 | * (Console doesn't understand fsbtodb changes.) | |
269 | */ | |
270 | fs->fs_sparecon[0] = fs->fs_fsbtodb; | |
271 | #endif | |
272 | i = fs->fs_fsize / size; | |
273 | for (fs->fs_fsbtodb = 0; i > 1; i >>= 1) | |
274 | fs->fs_fsbtodb++; | |
275 | #endif SECSIZE | |
276 | fs->fs_dbsize = size; | |
277 | } | |
71e4e98b | 278 | blks = howmany(fs->fs_cssize, fs->fs_fsize); |
b1ca3fbf | 279 | base = space = malloc((u_long)fs->fs_cssize, M_UFSMNT, |
5adcb337 | 280 | M_WAITOK); |
71e4e98b SL |
281 | for (i = 0; i < blks; i += fs->fs_frag) { |
282 | size = fs->fs_bsize; | |
283 | if (i + fs->fs_frag > blks) | |
284 | size = (blks - i) * fs->fs_fsize; | |
ec67a3ce MK |
285 | #ifdef SECSIZE |
286 | tp = bread(dev, fsbtodb(fs, fs->fs_csaddr + i), size, | |
287 | fs->fs_dbsize); | |
288 | #else SECSIZE | |
a937f856 KM |
289 | error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size, |
290 | NOCRED, &bp); | |
7188ac27 | 291 | if (error) { |
b1ca3fbf | 292 | free(base, M_UFSMNT); |
71e4e98b SL |
293 | goto out; |
294 | } | |
e018935f | 295 | bcopy((caddr_t)bp->b_un.b_addr, space, (u_int)size); |
60f9c9e3 | 296 | fs->fs_csp[fragstoblks(fs, i)] = (struct csum *)space; |
71e4e98b | 297 | space += size; |
e018935f MK |
298 | brelse(bp); |
299 | bp = NULL; | |
71e4e98b | 300 | } |
82161bc8 KM |
301 | mp->mnt_data = (qaddr_t)ump; |
302 | mp->mnt_stat.f_fsid.val[0] = (long)dev; | |
303 | mp->mnt_stat.f_fsid.val[1] = MOUNT_UFS; | |
ea301039 | 304 | mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen; |
82161bc8 | 305 | mp->mnt_flag |= MNT_LOCAL; |
7188ac27 KM |
306 | ump->um_mountp = mp; |
307 | ump->um_dev = dev; | |
308 | ump->um_devvp = devvp; | |
8dc876c1 KM |
309 | for (i = 0; i < MAXQUOTAS; i++) |
310 | ump->um_quotas[i] = NULLVP; | |
0f93ba7b | 311 | devvp->v_specflags |= SI_MOUNTEDON; |
7188ac27 | 312 | |
94354803 KM |
313 | /* Sanity checks for old file systems. XXX */ |
314 | fs->fs_npsect = MAX(fs->fs_npsect, fs->fs_nsect); /* XXX */ | |
315 | fs->fs_interleave = MAX(fs->fs_interleave, 1); /* XXX */ | |
2af59000 KM |
316 | if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ |
317 | fs->fs_nrpos = 8; /* XXX */ | |
4605fb61 KM |
318 | if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ |
319 | quad_t sizepb = fs->fs_bsize; /* XXX */ | |
320 | /* XXX */ | |
321 | fs->fs_maxfilesize = fs->fs_bsize * NDADDR - 1; /* XXX */ | |
322 | for (i = 0; i < NIADDR; i++) { /* XXX */ | |
323 | sizepb *= NINDIR(fs); /* XXX */ | |
324 | fs->fs_maxfilesize += sizepb; /* XXX */ | |
325 | } /* XXX */ | |
326 | fs->fs_qbmask = ~fs->fs_bmask; /* XXX */ | |
327 | fs->fs_qfmask = ~fs->fs_fmask; /* XXX */ | |
328 | } /* XXX */ | |
609e7cfa | 329 | |
7188ac27 | 330 | return (0); |
71e4e98b | 331 | out: |
c86c9b6e KM |
332 | if (bp) |
333 | brelse(bp); | |
3a328e36 | 334 | (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p); |
8dc876c1 | 335 | if (ump) { |
b1ca3fbf | 336 | free(ump->um_fs, M_UFSMNT); |
ab9f4fb0 | 337 | free(ump, M_UFSMNT); |
82161bc8 | 338 | mp->mnt_data = (qaddr_t)0; |
27d00e76 | 339 | } |
7188ac27 | 340 | return (error); |
71e4e98b SL |
341 | } |
342 | ||
7188ac27 KM |
343 | /* |
344 | * unmount system call | |
345 | */ | |
ab9f4fb0 KB |
346 | int |
347 | ffs_unmount(mp, mntflags, p) | |
7188ac27 | 348 | struct mount *mp; |
8dc876c1 | 349 | int mntflags; |
0eb6f54a | 350 | struct proc *p; |
71e4e98b | 351 | { |
ab9f4fb0 | 352 | extern int doforce; |
7188ac27 | 353 | register struct ufsmount *ump; |
71e4e98b | 354 | register struct fs *fs; |
6b50a7c5 | 355 | int i, error, flags, ronly; |
71e4e98b | 356 | |
6b50a7c5 | 357 | flags = 0; |
87be6db2 | 358 | if (mntflags & MNT_FORCE) { |
d85a9d1b | 359 | if (!doforce || mp == rootfs) |
87be6db2 | 360 | return (EINVAL); |
8dc876c1 | 361 | flags |= FORCECLOSE; |
87be6db2 | 362 | } |
7188ac27 | 363 | ump = VFSTOUFS(mp); |
ec67a3ce | 364 | return (error); |
71e4e98b | 365 | #ifdef QUOTA |
82161bc8 | 366 | if (mp->mnt_flag & MNT_QUOTA) { |
8dc876c1 | 367 | if (error = vflush(mp, NULLVP, SKIPSYSTEM|flags)) |
6d943995 | 368 | return (error); |
8dc876c1 KM |
369 | for (i = 0; i < MAXQUOTAS; i++) { |
370 | if (ump->um_quotas[i] == NULLVP) | |
371 | continue; | |
70a360ba | 372 | quotaoff(p, mp, i); |
8dc876c1 | 373 | } |
6d943995 | 374 | /* |
8dc876c1 KM |
375 | * Here we fall through to vflush again to ensure |
376 | * that we have gotten rid of all the system vnodes. | |
6d943995 | 377 | */ |
8dc876c1 | 378 | } |
71e4e98b | 379 | #endif |
8dc876c1 | 380 | if (error = vflush(mp, NULLVP, flags)) |
6d943995 | 381 | return (error); |
7188ac27 KM |
382 | fs = ump->um_fs; |
383 | ronly = !fs->fs_ronly; | |
7188ac27 KM |
384 | * Get file system statistics. |
385 | */ | |
ab9f4fb0 KB |
386 | int |
387 | ffs_statfs(mp, sbp, p) | |
7188ac27 KM |
388 | struct mount *mp; |
389 | register struct statfs *sbp; | |
0eb6f54a | 390 | struct proc *p; |
7188ac27 KM |
391 | { |
392 | register struct ufsmount *ump; | |
393 | register struct fs *fs; | |
394 | ||
395 | ump = VFSTOUFS(mp); | |
396 | fs = ump->um_fs; | |
397 | if (fs->fs_magic != FS_MAGIC) | |
ab9f4fb0 | 398 | panic("ffs_statfs"); |
7188ac27 | 399 | sbp->f_type = MOUNT_UFS; |
06445aba KM |
400 | sbp->f_bsize = fs->fs_fsize; |
401 | sbp->f_iosize = fs->fs_bsize; | |
7188ac27 KM |
402 | sbp->f_blocks = fs->fs_dsize; |
403 | sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag + | |
404 | fs->fs_cstotal.cs_nffree; | |
405 | sbp->f_bavail = (fs->fs_dsize * (100 - fs->fs_minfree) / 100) - | |
406 | (fs->fs_dsize - sbp->f_bfree); | |
5c41c19e | 407 | sbp->f_files = fs->fs_ncg * fs->fs_ipg - ROOTINO; |
7188ac27 | 408 | sbp->f_ffree = fs->fs_cstotal.cs_nifree; |
82161bc8 KM |
409 | if (sbp != &mp->mnt_stat) { |
410 | bcopy((caddr_t)mp->mnt_stat.f_mntonname, | |
d45de50d | 411 | (caddr_t)&sbp->f_mntonname[0], MNAMELEN); |
82161bc8 | 412 | bcopy((caddr_t)mp->mnt_stat.f_mntfromname, |
d45de50d KM |
413 | (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); |
414 | } | |
7188ac27 KM |
415 | return (0); |
416 | } | |
417 | ||
7188ac27 KM |
418 | /* |
419 | * Go through the disk queues to initiate sandbagged IO; | |
420 | * go through the inodes to write those that have been modified; | |
421 | * initiate the writing of the super block if it has been modified. | |
8dc876c1 KM |
422 | * |
423 | * Note: we are always called with the filesystem marked `MPBUSY'. | |
7188ac27 | 424 | */ |
ab9f4fb0 | 425 | int |
6b50a7c5 | 426 | ffs_sync(mp, waitfor, cred, p) |
71e4e98b | 427 | struct mount *mp; |
7188ac27 | 428 | int waitfor; |
6b50a7c5 KM |
429 | struct ucred *cred; |
430 | struct proc *p; | |
71e4e98b | 431 | { |
ab9f4fb0 | 432 | extern int syncprt; |
31593ba7 | 433 | register struct vnode *vp; |
7188ac27 KM |
434 | register struct inode *ip; |
435 | register struct ufsmount *ump = VFSTOUFS(mp); | |
436 | register struct fs *fs; | |
812b91f3 | 437 | int error, allerror = 0; |
7188ac27 KM |
438 | |
439 | if (syncprt) | |
ab9f4fb0 | 440 | ufs_bufstats(); |
7188ac27 | 441 | fs = ump->um_fs; |
7188ac27 KM |
442 | /* |
443 | * Write back modified superblock. | |
444 | * Consistency check that the superblock | |
445 | * is still in the buffer cache. | |
446 | */ | |
447 | if (fs->fs_fmod != 0) { | |
448 | if (fs->fs_ronly != 0) { /* XXX */ | |
449 | printf("fs = %s\n", fs->fs_fsmnt); | |
450 | panic("update: rofs mod"); | |
451 | } | |
452 | fs->fs_fmod = 0; | |
453 | fs->fs_time = time.tv_sec; | |
ab9f4fb0 | 454 | allerror = ffs_sbupdate(ump, waitfor); |
7188ac27 KM |
455 | } |
456 | /* | |
457 | * Write back each (modified) inode. | |
458 | */ | |
25b5cf58 | 459 | loop: |
a242f429 KM |
460 | for (vp = mp->mnt_mounth; vp; vp = vp->v_mountf) { |
461 | /* | |
462 | * If the vnode that we are about to sync is no longer | |
463 | * associated with this mount point, start over. | |
464 | */ | |
465 | if (vp->v_mount != mp) | |
466 | goto loop; | |
d85a9d1b KM |
467 | if (VOP_ISLOCKED(vp)) |
468 | continue; | |
31593ba7 | 469 | ip = VTOI(vp); |
25b5cf58 KM |
470 | if ((ip->i_flag & (IMOD|IACC|IUPD|ICHG)) == 0 && |
471 | vp->v_dirtyblkhd == NULL) | |
7188ac27 | 472 | continue; |
25b5cf58 KM |
473 | if (vget(vp)) |
474 | goto loop; | |
6b50a7c5 | 475 | if (error = VOP_FSYNC(vp, cred, waitfor, p)) |
812b91f3 KM |
476 | allerror = error; |
477 | vput(vp); | |
7188ac27 | 478 | } |
7188ac27 | 479 | /* |
5d96a9ad | 480 | * Force stale file system control information to be flushed. |
7188ac27 | 481 | */ |
6b50a7c5 KM |
482 | if (error = VOP_FSYNC(ump->um_devvp, cred, waitfor, p)) |
483 | allerror = error; | |
8dc876c1 KM |
484 | #ifdef QUOTA |
485 | qsync(mp); | |
486 | #endif | |
812b91f3 | 487 | return (allerror); |
7188ac27 KM |
488 | } |
489 | ||
067ae075 KM |
490 | /* |
491 | * Look up a FFS dinode number to find its incore vnode. | |
492 | * If it is not in core, read it in from the specified device. | |
493 | * If it is in core, wait for the lock bit to clear, then | |
494 | * return the inode locked. Detection and handling of mount | |
495 | * points must be done by the calling routine. | |
496 | */ | |
497 | int | |
498 | ffs_vget(mp, ino, vpp) | |
499 | struct mount *mp; | |
500 | ino_t ino; | |
501 | struct vnode **vpp; | |
502 | { | |
503 | register struct fs *fs; | |
504 | register struct inode *ip; | |
505 | struct ufsmount *ump; | |
506 | struct buf *bp; | |
507 | struct dinode *dp; | |
508 | struct vnode *vp; | |
509 | union ihead *ih; | |
510 | dev_t dev; | |
511 | int i, type, error; | |
512 | ||
513 | ump = VFSTOUFS(mp); | |
514 | dev = ump->um_dev; | |
515 | if ((*vpp = ufs_ihashget(dev, ino)) != NULL) | |
516 | return (0); | |
517 | ||
518 | /* Allocate a new vnode/inode. */ | |
519 | if (error = getnewvnode(VT_UFS, mp, ffs_vnodeop_p, &vp)) { | |
520 | *vpp = NULL; | |
521 | return (error); | |
522 | } | |
523 | type = ump->um_devvp->v_tag == VT_MFS ? M_MFSNODE : M_FFSNODE; /* XXX */ | |
524 | MALLOC(ip, struct inode *, sizeof(struct inode), type, M_WAITOK); | |
525 | vp->v_data = ip; | |
526 | ip->i_vnode = vp; | |
527 | ip->i_flag = 0; | |
528 | ip->i_devvp = 0; | |
529 | ip->i_mode = 0; | |
530 | ip->i_diroff = 0; | |
531 | ip->i_lockf = 0; | |
532 | ip->i_fs = fs = ump->um_fs; | |
533 | ip->i_dev = dev; | |
534 | ip->i_number = ino; | |
535 | #ifdef QUOTA | |
536 | for (i = 0; i < MAXQUOTAS; i++) | |
537 | ip->i_dquot[i] = NODQUOT; | |
538 | #endif | |
539 | /* | |
540 | * Put it onto its hash chain and lock it so that other requests for | |
541 | * this inode will block if they arrive while we are sleeping waiting | |
542 | * for old data structures to be purged or for the contents of the | |
543 | * disk portion of this inode to be read. | |
544 | */ | |
545 | ufs_ihashins(ip); | |
546 | ||
547 | /* Read in the disk contents for the inode, copy into the inode. */ | |
548 | if (error = bread(ump->um_devvp, fsbtodb(fs, itod(fs, ino)), | |
549 | (int)fs->fs_bsize, NOCRED, &bp)) { | |
550 | /* | |
551 | * The inode does not contain anything useful, so it would | |
552 | * be misleading to leave it on its hash chain. It will be | |
553 | * returned to the free list by ufs_iput(). | |
554 | */ | |
555 | remque(ip); | |
556 | ip->i_forw = ip; | |
557 | ip->i_back = ip; | |
558 | ||
559 | /* Unlock and discard unneeded inode. */ | |
560 | ufs_iput(ip); | |
561 | brelse(bp); | |
562 | *vpp = NULL; | |
563 | return (error); | |
564 | } | |
565 | dp = bp->b_un.b_dino; | |
566 | dp += itoo(fs, ino); | |
567 | ip->i_din = *dp; | |
568 | brelse(bp); | |
569 | ||
570 | /* | |
571 | * Initialize the vnode from the inode, check for aliases. | |
572 | * Note that the underlying vnode may have changed. | |
573 | */ | |
574 | if (error = ufs_vinit(mp, ffs_specop_p, FFS_FIFOOPS, &vp)) { | |
575 | ufs_iput(ip); | |
576 | *vpp = NULL; | |
577 | return (error); | |
578 | } | |
579 | /* | |
580 | * Finish inode initialization now that aliasing has been resolved. | |
581 | */ | |
582 | ip->i_devvp = ump->um_devvp; | |
583 | VREF(ip->i_devvp); | |
584 | /* | |
585 | * Set up a generation number for this inode if it does not | |
586 | * already have one. This should only happen on old filesystems. | |
587 | */ | |
588 | if (ip->i_gen == 0) { | |
589 | if (++nextgennumber < (u_long)time.tv_sec) | |
590 | nextgennumber = time.tv_sec; | |
591 | ip->i_gen = nextgennumber; | |
592 | if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) | |
593 | ip->i_flag |= IMOD; | |
594 | } | |
595 | /* | |
596 | * Ensure that uid and gid are correct. This is a temporary | |
597 | * fix until fsck has been changed to do the update. | |
598 | */ | |
599 | if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */ | |
600 | ip->i_uid = ip->i_din.di_ouid; /* XXX */ | |
601 | ip->i_gid = ip->i_din.di_ogid; /* XXX */ | |
602 | } /* XXX */ | |
603 | ||
604 | *vpp = vp; | |
605 | return (0); | |
606 | } | |
607 | ||
a9013e03 KM |
608 | /* |
609 | * File handle to vnode | |
610 | * | |
611 | * Have to be really careful about stale file handles: | |
612 | * - check that the inode number is valid | |
613 | * - call ffs_vget() to get the locked inode | |
614 | * - check for an unallocated inode (i_mode == 0) | |
03f3a6e4 KM |
615 | * - check that the given client host has export rights and return |
616 | * those rights via. exflagsp and credanonp | |
a9013e03 KM |
617 | */ |
618 | int | |
03f3a6e4 | 619 | ffs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp) |
a9013e03 KM |
620 | register struct mount *mp; |
621 | struct fid *fhp; | |
03f3a6e4 | 622 | struct mbuf *nam; |
a9013e03 | 623 | struct vnode **vpp; |
03f3a6e4 KM |
624 | int *exflagsp; |
625 | struct ucred **credanonp; | |
a9013e03 KM |
626 | { |
627 | register struct inode *ip; | |
628 | register struct ufid *ufhp; | |
03f3a6e4 KM |
629 | register struct netaddrhash *np; |
630 | register struct ufsmount *ump = VFSTOUFS(mp); | |
a9013e03 KM |
631 | struct fs *fs; |
632 | struct vnode *nvp; | |
03f3a6e4 | 633 | struct sockaddr *saddr; |
a9013e03 KM |
634 | int error; |
635 | ||
636 | ufhp = (struct ufid *)fhp; | |
03f3a6e4 | 637 | fs = ump->um_fs; |
a9013e03 KM |
638 | if (ufhp->ufid_ino < ROOTINO || |
639 | ufhp->ufid_ino >= fs->fs_ncg * fs->fs_ipg) | |
03f3a6e4 KM |
640 | return (ESTALE); |
641 | /* | |
642 | * Get the export permission structure for this <mp, client> tuple. | |
643 | */ | |
644 | if ((mp->mnt_flag & MNT_EXPORTED) == 0) | |
645 | return (EACCES); | |
646 | if (nam == NULL) { | |
647 | np = (struct netaddrhash *)0; | |
648 | } else { | |
649 | /* | |
650 | * First search for a network match. | |
651 | */ | |
652 | np = ump->um_netaddr[NETMASK_HASH]; | |
653 | while (np) { | |
654 | if (netaddr_match(np->neth_family, &np->neth_haddr, | |
655 | &np->neth_hmask, nam)) | |
656 | break; | |
657 | np = np->neth_next; | |
658 | } | |
659 | ||
660 | /* | |
661 | * If not found, try for an address match. | |
662 | */ | |
663 | if (np == (struct netaddrhash *)0) { | |
664 | saddr = mtod(nam, struct sockaddr *); | |
665 | np = ump->um_netaddr[NETADDRHASH(saddr)]; | |
666 | while (np) { | |
667 | if (netaddr_match(np->neth_family, | |
668 | &np->neth_haddr, (struct netaddrhash *)0, | |
669 | nam)) | |
670 | break; | |
671 | np = np->neth_next; | |
672 | } | |
673 | } | |
674 | } | |
675 | if (np == (struct netaddrhash *)0) { | |
676 | /* | |
677 | * If no address match, use the default if it exists. | |
678 | */ | |
679 | if ((mp->mnt_flag & MNT_DEFEXPORTED) == 0) | |
680 | return (EACCES); | |
681 | np = &ump->um_defexported; | |
682 | } | |
067ae075 | 683 | if (error = VFS_VGET(mp, ufhp->ufid_ino, &nvp)) { |
a9013e03 KM |
684 | *vpp = NULLVP; |
685 | return (error); | |
686 | } | |
687 | ip = VTOI(nvp); | |
6b50a7c5 | 688 | if (ip->i_mode == 0 || ip->i_gen != ufhp->ufid_gen) { |
a9013e03 KM |
689 | ufs_iput(ip); |
690 | *vpp = NULLVP; | |
03f3a6e4 | 691 | return (ESTALE); |
a9013e03 | 692 | } |
a9013e03 | 693 | *vpp = nvp; |
03f3a6e4 KM |
694 | *exflagsp = np->neth_exflags; |
695 | *credanonp = &np->neth_anon; | |
a9013e03 KM |
696 | return (0); |
697 | } | |
698 | ||
699 | /* | |
700 | * Vnode pointer to File handle | |
701 | */ | |
702 | /* ARGSUSED */ | |
703 | ffs_vptofh(vp, fhp) | |
704 | struct vnode *vp; | |
705 | struct fid *fhp; | |
706 | { | |
707 | register struct inode *ip; | |
708 | register struct ufid *ufhp; | |
709 | ||
710 | ip = VTOI(vp); | |
711 | ufhp = (struct ufid *)fhp; | |
712 | ufhp->ufid_len = sizeof(struct ufid); | |
713 | ufhp->ufid_ino = ip->i_number; | |
714 | ufhp->ufid_gen = ip->i_gen; | |
715 | return (0); | |
716 | } | |
717 | ||
7188ac27 KM |
718 | /* |
719 | * Write a superblock and associated information back to disk. | |
720 | */ | |
06445aba | 721 | int |
ab9f4fb0 | 722 | ffs_sbupdate(mp, waitfor) |
7188ac27 KM |
723 | struct ufsmount *mp; |
724 | int waitfor; | |
725 | { | |
726 | register struct fs *fs = mp->um_fs; | |
71e4e98b SL |
727 | register struct buf *bp; |
728 | int blks; | |
729 | caddr_t space; | |
7188ac27 | 730 | int i, size, error = 0; |
71e4e98b | 731 | |
ec67a3ce MK |
732 | #ifdef SECSIZE |
733 | bp = getblk(mp->m_dev, (daddr_t)fsbtodb(fs, SBOFF / fs->fs_fsize), | |
734 | (int)fs->fs_sbsize, fs->fs_dbsize); | |
735 | #else SECSIZE | |
7188ac27 | 736 | bp = getblk(mp->um_devvp, SBLOCK, (int)fs->fs_sbsize); |
ec67a3ce | 737 | #endif SECSIZE |
71e4e98b | 738 | bcopy((caddr_t)fs, bp->b_un.b_addr, (u_int)fs->fs_sbsize); |
2af59000 KM |
739 | /* Restore compatibility to old file systems. XXX */ |
740 | if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */ | |
741 | bp->b_un.b_fs->fs_nrpos = -1; /* XXX */ | |
ec67a3ce MK |
742 | #ifdef SECSIZE |
743 | #ifdef tahoe | |
744 | /* restore standard fsbtodb shift */ | |
745 | bp->b_un.b_fs->fs_fsbtodb = fs->fs_sparecon[0]; | |
746 | bp->b_un.b_fs->fs_sparecon[0] = 0; | |
747 | #endif | |
748 | #endif SECSIZE | |
7188ac27 KM |
749 | if (waitfor == MNT_WAIT) |
750 | error = bwrite(bp); | |
751 | else | |
752 | bawrite(bp); | |
71e4e98b SL |
753 | blks = howmany(fs->fs_cssize, fs->fs_fsize); |
754 | space = (caddr_t)fs->fs_csp[0]; | |
755 | for (i = 0; i < blks; i += fs->fs_frag) { | |
756 | size = fs->fs_bsize; | |
757 | if (i + fs->fs_frag > blks) | |
758 | size = (blks - i) * fs->fs_fsize; | |
ec67a3ce MK |
759 | #ifdef SECSIZE |
760 | bp = getblk(mp->m_dev, fsbtodb(fs, fs->fs_csaddr + i), size, | |
761 | fs->fs_dbsize); | |
762 | #else SECSIZE | |
7188ac27 | 763 | bp = getblk(mp->um_devvp, fsbtodb(fs, fs->fs_csaddr + i), size); |
ec67a3ce | 764 | #endif SECSIZE |
71e4e98b SL |
765 | bcopy(space, bp->b_un.b_addr, (u_int)size); |
766 | space += size; | |
7188ac27 KM |
767 | if (waitfor == MNT_WAIT) |
768 | error = bwrite(bp); | |
769 | else | |
770 | bawrite(bp); | |
71e4e98b | 771 | } |
7188ac27 | 772 | return (error); |
71e4e98b | 773 | } |