2 * Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/fs/hpfs/hpfs_vfsops.c,v 1.3.2.2 2001/12/25 01:44:45 dillon Exp $
27 * $DragonFly: src/sys/vfs/hpfs/hpfs_vfsops.c,v 1.25 2004/12/29 02:42:15 dillon Exp $
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/nlookup.h>
36 #include <sys/kernel.h>
37 #include <sys/vnode.h>
38 #include <sys/mount.h>
40 #include <sys/fcntl.h>
41 #include <sys/malloc.h>
44 #include <vm/vm_param.h>
45 #if defined(__NetBSD__)
46 #include <vm/vm_prot.h>
48 #include <vm/vm_page.h>
49 #include <vm/vm_object.h>
50 #include <vm/vm_extern.h>
53 #if defined(__NetBSD__)
54 #include <miscfs/specfs/specdev.h>
58 #include "hpfsmount.h"
59 #include "hpfs_subr.h"
61 extern struct vnodeopv_entry_desc hpfs_vnodeop_entries[];
63 #if defined(__DragonFly__)
64 MALLOC_DEFINE(M_HPFSMNT, "HPFS mount", "HPFS mount structure");
65 MALLOC_DEFINE(M_HPFSNO, "HPFS node", "HPFS node structure");
68 static int hpfs_root (struct mount *, struct vnode **);
69 static int hpfs_statfs (struct mount *, struct statfs *,
71 static int hpfs_unmount (struct mount *, int, struct thread *);
72 static int hpfs_vget (struct mount *mp, ino_t ino,
74 static int hpfs_mountfs (struct vnode *, struct mount *,
75 struct hpfs_args *, struct thread *);
76 static int hpfs_vptofh (struct vnode *, struct fid *);
77 static int hpfs_fhtovp (struct mount *, struct fid *,
80 #if !defined(__DragonFly__)
81 static int hpfs_quotactl (struct mount *, int, uid_t, caddr_t,
83 static int hpfs_start (struct mount *, int, struct proc *);
84 static int hpfs_sync (struct mount *, int, struct ucred *,
88 #if defined(__DragonFly__)
90 static int hpfs_mount (struct mount *, char *, caddr_t, struct thread *);
91 static int hpfs_init (struct vfsconf *);
92 static int hpfs_checkexp (struct mount *, struct sockaddr *,
93 int *, struct ucred **);
94 #else /* defined(__NetBSD__) */
95 static int hpfs_mount (struct mount *, const char *, void *,
96 struct nlookupdata *, struct proc *);
97 static void hpfs_init (void);
98 static int hpfs_sysctl (int *, u_int, void *, size_t *, void *,
99 size_t, struct proc *);
100 static int hpfs_checkexp (struct mount *, struct mbuf *,
101 int *, struct ucred **);
106 hpfs_checkexp(struct mount *mp,
107 #if defined(__DragonFly__)
108 struct sockaddr *nam,
109 #else /* defined(__NetBSD__) */
112 int *exflagsp, struct ucred **credanonp)
115 struct hpfsmount *hpm = VFSTOHPFS(mp);
118 * Get the export permission structure for this <mp, client> tuple.
120 np = vfs_export_lookup(mp, &hpm->hpm_export, nam);
124 *exflagsp = np->netc_exflags;
125 *credanonp = &np->netc_anon;
129 #if defined(__DragonFly__)
131 hpfs_init(struct vfsconf *vcp)
132 #else /* defined(__NetBSD__) */
137 dprintf(("hpfs_init():\n"));
140 #if defined(__DragonFly__)
146 hpfs_mount(struct mount *mp,
147 #if defined(__DragonFly__)
148 char *path, caddr_t data,
149 #else /* defined(__NetBSD__) */
150 const char *path, void *data,
157 struct hpfs_args args;
158 struct hpfsmount *hpmp = 0;
159 struct nlookupdata nd;
161 dprintf(("hpfs_mount():\n"));
164 * Mounting non-root file system or updating a file system
168 /* copy in user arguments*/
169 error = copyin(data, (caddr_t)&args, sizeof (struct hpfs_args));
171 goto error_1; /* can't get arguments*/
174 * If updating, check whether changing from read-only to
175 * read/write; if there is no device name, that's all we do.
177 if (mp->mnt_flag & MNT_UPDATE) {
178 dprintf(("hpfs_mount: MNT_UPDATE: "));
180 hpmp = VFSTOHPFS(mp);
182 if (args.fspec == 0) {
183 dprintf(("export 0x%x\n",args.export.ex_flags));
184 error = vfs_export(mp, &hpmp->hpm_export, &args.export);
186 printf("hpfs_mount: vfs_export failed %d\n",
191 dprintf(("name [FAILED]\n"));
199 * Not an update, or updating the name: look up the name
200 * and verify that it refers to a sensible block device.
203 error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW);
205 error = nlookup(&nd);
207 error = cache_vref(nd.nl_ncp, nd.nl_cred, &devvp);
212 #if defined(__DragonFly__)
213 if (!vn_isdisk(devvp, &error))
215 #else /* defined(__NetBSD__) */
216 if (devvp->v_type != VBLK) {
220 if (umajor(devvp->v_udev) >= nblkdev) {
233 * Since this is a new mount, we want the names for
234 * the device and the mount point copied in. If an
235 * error occurs, the mountpoint is discarded by the
238 /* Save "last mounted on" info for mount point (NULL pad)*/
239 copyinstr( path, /* mount point*/
240 mp->mnt_stat.f_mntonname, /* save area*/
241 MNAMELEN - 1, /* max size*/
242 &size); /* real size*/
243 bzero( mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
245 /* Save "mounted from" info for mount point (NULL pad)*/
246 copyinstr( args.fspec, /* device name*/
247 mp->mnt_stat.f_mntfromname, /* save area*/
248 MNAMELEN - 1, /* max size*/
249 &size); /* real size*/
250 bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
252 error = hpfs_mountfs(devvp, mp, &args, td);
257 * Initialize FS stat information in mount struct; uses both
258 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
260 * This code is common to root and non-root mounts
262 VFS_STATFS(mp, &mp->mnt_stat, td);
265 error_2: /* error with devvp held*/
267 /* release devvp before failing*/
270 error_1: /* no state to back out*/
277 * Common code for mount and mountroot
280 hpfs_mountfs(struct vnode *devvp, struct mount *mp, struct hpfs_args *argsp,
283 int error, ncount, ronly;
286 struct hpfsmount *hpmp;
287 struct buf *bp = NULL;
291 dprintf(("hpfs_mountfs():\n"));
293 * Disallow multiple mounts of the same device.
294 * Disallow mounting of a device that is currently in use
295 * (except for root, which might share swap device for miniroot).
296 * Flush out any old buffers remaining from a previous use.
298 error = vfs_mountedon(devvp);
301 ncount = count_udev(devvp->v_udev);
302 #if defined(__DragonFly__)
309 #if defined(__DragonFly__)
310 VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, td);
311 error = vinvalbuf(devvp, V_SAVE, td, 0, 0);
312 VOP__UNLOCK(devvp, 0, td);
314 error = vinvalbuf(devvp, V_SAVE, td, 0, 0);
319 ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
320 VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, td);
321 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, NULL, td);
322 VOP__UNLOCK(devvp, 0, td);
330 hpmp = malloc(sizeof(struct hpfsmount), M_HPFSMNT, M_WAITOK);
331 bzero(hpmp, sizeof(struct hpfsmount));
333 /* Read in SuperBlock */
334 error = bread(devvp, SUBLOCK, SUSIZE, &bp);
337 bcopy(bp->b_data, &hpmp->hpm_su, sizeof(struct sublock));
338 brelse(bp); bp = NULL;
340 /* Read in SpareBlock */
341 error = bread(devvp, SPBLOCK, SPSIZE, &bp);
344 bcopy(bp->b_data, &hpmp->hpm_sp, sizeof(struct spblock));
345 brelse(bp); bp = NULL;
351 if (sup->su_magic != SU_MAGIC) {
352 printf("hpfs_mountfs: SuperBlock MAGIC DOESN'T MATCH\n");
356 if (spp->sp_magic != SP_MAGIC) {
357 printf("hpfs_mountfs: SpareBlock MAGIC DOESN'T MATCH\n");
362 mp->mnt_data = (qaddr_t)hpmp;
363 hpmp->hpm_devvp = devvp;
366 hpmp->hpm_uid = argsp->uid;
367 hpmp->hpm_gid = argsp->gid;
368 hpmp->hpm_mode = argsp->mode;
370 error = hpfs_bminit(hpmp);
374 error = hpfs_cpinit(hpmp, argsp);
379 vfs_add_vnodeops(mp, &mp->mnt_vn_norm_ops, hpfs_vnodeop_entries);
381 error = hpfs_root(mp, &vp);
390 #if defined(__DragonFly__)
391 mp->mnt_stat.f_fsid.val[0] = (long)dev2udev(dev);
392 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
394 mp->mnt_stat.f_fsid.val[0] = (long)dev;
395 mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_HPFS);
397 mp->mnt_maxsymlinklen = 0;
398 mp->mnt_flag |= MNT_LOCAL;
399 dev->si_mountpoint = mp;
405 mp->mnt_data = (qaddr_t)NULL;
406 #if defined(__DragonFly__)
407 dev->si_mountpoint = NULL;
409 devvp->v_specflags &= ~SI_MOUNTEDON;
411 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, td);
415 #if !defined(__DragonFly__)
417 hpfs_start(struct mount *mp, int flags, struct thread *td)
424 hpfs_unmount(struct mount *mp, int mntflags, struct thread *td)
426 int error, flags, ronly;
427 struct hpfsmount *hpmp = VFSTOHPFS(mp);
429 dprintf(("hpfs_unmount():\n"));
431 ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
434 if(mntflags & MNT_FORCE)
437 dprintf(("hpfs_unmount: vflushing...\n"));
439 error = vflush(mp, 0, flags);
441 printf("hpfs_unmount: vflush failed: %d\n",error);
445 #if defined(__DragonFly__)
446 hpmp->hpm_devvp->v_rdev->si_mountpoint = NULL;
448 hpmp->hpm_devvp->v_specflags &= ~SI_MOUNTEDON;
451 vinvalbuf(hpmp->hpm_devvp, V_SAVE, td, 0, 0);
452 error = VOP_CLOSE(hpmp->hpm_devvp, ronly ? FREAD : FREAD|FWRITE, td);
454 vrele(hpmp->hpm_devvp);
456 dprintf(("hpfs_umount: freeing memory...\n"));
459 mp->mnt_data = (qaddr_t)0;
460 mp->mnt_flag &= ~MNT_LOCAL;
461 FREE(hpmp, M_HPFSMNT);
467 hpfs_root(struct mount *mp, struct vnode **vpp)
470 struct hpfsmount *hpmp = VFSTOHPFS(mp);
472 dprintf(("hpfs_root():\n"));
473 error = VFS_VGET(mp, (ino_t)hpmp->hpm_su.su_rootfno, vpp);
475 printf("hpfs_root: VFS_VGET failed: %d\n",error);
483 hpfs_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
485 struct hpfsmount *hpmp = VFSTOHPFS(mp);
487 dprintf(("hpfs_statfs(): HPFS%d.%d\n",
488 hpmp->hpm_su.su_hpfsver, hpmp->hpm_su.su_fnctver));
490 #if defined(__DragonFly__)
491 sbp->f_type = mp->mnt_vfc->vfc_typenum;
492 #else /* defined(__NetBSD__) */
495 sbp->f_bsize = DEV_BSIZE;
496 sbp->f_iosize = DEV_BSIZE;
497 sbp->f_blocks = hpmp->hpm_su.su_btotal;
498 sbp->f_bfree = sbp->f_bavail = hpmp->hpm_bavail;
501 if (sbp != &mp->mnt_stat) {
502 bcopy((caddr_t)mp->mnt_stat.f_mntonname,
503 (caddr_t)&sbp->f_mntonname[0], MNAMELEN);
504 bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
505 (caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
507 sbp->f_flags = mp->mnt_flag;
512 #if !defined(__DragonFly__)
514 hpfs_sync(struct mount *mp, int waitfor, struct ucred *cred,
521 hpfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
524 printf("hpfs_quotactl():\n");
531 hpfs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp)
534 struct hpfid *hpfhp = (struct hpfid *)fhp;
537 if ((error = VFS_VGET(mp, hpfhp->hpfid_ino, &nvp)) != 0) {
541 /* XXX as unlink/rmdir/mkdir/creat are not currently possible
542 * with HPFS, we don't need to check anything else for now */
549 hpfs_vptofh(struct vnode *vp, struct fid *fhp)
551 struct hpfsnode *hpp;
555 hpfhp = (struct hpfid *)fhp;
556 hpfhp->hpfid_len = sizeof(struct hpfid);
557 hpfhp->hpfid_ino = hpp->h_no;
558 /* hpfhp->hpfid_gen = hpp->h_gen; */
563 hpfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
565 struct hpfsmount *hpmp = VFSTOHPFS(mp);
569 struct thread *td = curthread; /* XXX */
572 dprintf(("hpfs_vget(0x%x): ",ino));
578 if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino, td)) != NULL) {
579 dprintf(("hashed\n"));
584 * We have to lock node creation for a while,
585 * but then we have to call getnewvnode(),
586 * this may cause hpfs_reclaim() to be called,
587 * this may need to VOP_VGET() parent dir for
588 * update reasons, and if parent is not in
589 * hash, we have to lock node creation...
590 * To solve this, we MALLOC, getnewvnode and init while
591 * not locked (probability of node appearence
592 * at that time is little, and anyway - we'll
595 MALLOC(hp, struct hpfsnode *, sizeof(struct hpfsnode),
598 error = getnewvnode(VT_HPFS, hpmp->hpm_mp, &vp, VLKTIMEOUT, 0);
600 printf("hpfs_vget: can't get new vnode\n");
605 dprintf(("prenew "));
609 if (ino == (ino_t)hpmp->hpm_su.su_rootfno)
612 lwkt_token_init(&hp->h_interlock);
614 hp->h_flag = H_INVAL;
618 hp->h_dev = hpmp->hpm_dev;
619 hp->h_uid = hpmp->hpm_uid;
620 hp->h_gid = hpmp->hpm_uid;
621 hp->h_mode = hpmp->hpm_mode;
622 hp->h_devvp = hpmp->hpm_devvp;
626 if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino, td)) != NULL) {
627 dprintf(("hashed2\n"));
631 } while(LOCKMGR(&hpfs_hphash_lock,LK_EXCLUSIVE|LK_SLEEPFAIL,NULL,NULL));
635 LOCKMGR(&hpfs_hphash_lock, LK_RELEASE, NULL, NULL);
637 error = bread(hpmp->hpm_devvp, ino, FNODESIZE, &bp);
639 printf("hpfs_vget: can't read ino %d\n",ino);
643 bcopy(bp->b_data, &hp->h_fn, sizeof(struct fnode));
646 if (hp->h_fn.fn_magic != FN_MAGIC) {
647 printf("hpfs_vget: MAGIC DOESN'T MATCH\n");
652 vp->v_type = hp->h_fn.fn_flag ? VDIR:VREG;
653 hp->h_flag &= ~H_INVAL;
655 /* Return the locked and refd vnode */
661 static struct vfsops hpfs_vfsops = {
678 VFS_SET(hpfs_vfsops, hpfs, 0);