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 1.17 2004/05/26 07:45:22 dillon Exp $
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/namei.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 #if defined(__DragonFly__)
62 MALLOC_DEFINE(M_HPFSMNT, "HPFS mount", "HPFS mount structure");
63 MALLOC_DEFINE(M_HPFSNO, "HPFS node", "HPFS node structure");
66 static int hpfs_root (struct mount *, struct vnode **);
67 static int hpfs_statfs (struct mount *, struct statfs *,
69 static int hpfs_unmount (struct mount *, int, struct thread *);
70 static int hpfs_vget (struct mount *mp, ino_t ino,
72 static int hpfs_mountfs (struct vnode *, struct mount *,
73 struct hpfs_args *, struct thread *);
74 static int hpfs_vptofh (struct vnode *, struct fid *);
75 static int hpfs_fhtovp (struct mount *, struct fid *,
78 #if !defined(__DragonFly__)
79 static int hpfs_quotactl (struct mount *, int, uid_t, caddr_t,
81 static int hpfs_start (struct mount *, int, struct proc *);
82 static int hpfs_sync (struct mount *, int, struct ucred *,
86 #if defined(__DragonFly__)
88 static int hpfs_mount (struct mount *, char *, caddr_t,
89 struct nameidata *, struct thread *);
90 static int hpfs_init (struct vfsconf *);
91 static int hpfs_checkexp (struct mount *, struct sockaddr *,
92 int *, struct ucred **);
93 #else /* defined(__NetBSD__) */
94 static int hpfs_mount (struct mount *, const char *, void *,
95 struct nameidata *, struct proc *);
96 static void hpfs_init (void);
97 static int hpfs_mountroot (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__)
132 hpfs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
133 size_t newlen, struct thread *td)
145 #if defined(__DragonFly__)
147 hpfs_init(struct vfsconf *vcp)
148 #else /* defined(__NetBSD__) */
153 dprintf(("hpfs_init():\n"));
156 #if defined(__DragonFly__)
162 hpfs_mount(struct mount *mp,
163 #if defined(__DragonFly__)
164 char *path, caddr_t data,
165 #else /* defined(__NetBSD__) */
166 const char *path, void *data,
168 struct nameidata *ndp, struct thread *td)
173 struct hpfs_args args;
174 struct hpfsmount *hpmp = 0;
176 dprintf(("hpfs_mount():\n"));
179 * Mounting non-root file system or updating a file system
183 /* copy in user arguments*/
184 err = copyin(data, (caddr_t)&args, sizeof (struct hpfs_args));
186 goto error_1; /* can't get arguments*/
189 * If updating, check whether changing from read-only to
190 * read/write; if there is no device name, that's all we do.
192 if (mp->mnt_flag & MNT_UPDATE) {
193 dprintf(("hpfs_mount: MNT_UPDATE: "));
195 hpmp = VFSTOHPFS(mp);
197 if (args.fspec == 0) {
198 dprintf(("export 0x%x\n",args.export.ex_flags));
199 err = vfs_export(mp, &hpmp->hpm_export, &args.export);
201 printf("hpfs_mount: vfs_export failed %d\n",
206 dprintf(("name [FAILED]\n"));
214 * Not an update, or updating the name: look up the name
215 * and verify that it refers to a sensible block device.
217 NDINIT(ndp, NAMEI_LOOKUP, CNP_FOLLOW, UIO_USERSPACE, args.fspec, td);
220 /* can't get devvp!*/
226 #if defined(__DragonFly__)
227 if (!vn_isdisk(devvp, &err))
229 #else /* defined(__NetBSD__) */
230 if (devvp->v_type != VBLK) {
234 if (umajor(devvp->v_udev) >= nblkdev) {
247 * Since this is a new mount, we want the names for
248 * the device and the mount point copied in. If an
249 * error occurs, the mountpoint is discarded by the
252 /* Save "last mounted on" info for mount point (NULL pad)*/
253 copyinstr( path, /* mount point*/
254 mp->mnt_stat.f_mntonname, /* save area*/
255 MNAMELEN - 1, /* max size*/
256 &size); /* real size*/
257 bzero( mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
259 /* Save "mounted from" info for mount point (NULL pad)*/
260 copyinstr( args.fspec, /* device name*/
261 mp->mnt_stat.f_mntfromname, /* save area*/
262 MNAMELEN - 1, /* max size*/
263 &size); /* real size*/
264 bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
266 err = hpfs_mountfs(devvp, mp, &args, td);
271 * Initialize FS stat information in mount struct; uses both
272 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
274 * This code is common to root and non-root mounts
276 (void)VFS_STATFS(mp, &mp->mnt_stat, td);
281 error_2: /* error with devvp held*/
283 /* release devvp before failing*/
286 error_1: /* no state to back out*/
293 * Common code for mount and mountroot
296 hpfs_mountfs(struct vnode *devvp, struct mount *mp, struct hpfs_args *argsp,
299 int error, ncount, ronly;
302 struct hpfsmount *hpmp;
303 struct buf *bp = NULL;
307 dprintf(("hpfs_mountfs():\n"));
309 * Disallow multiple mounts of the same device.
310 * Disallow mounting of a device that is currently in use
311 * (except for root, which might share swap device for miniroot).
312 * Flush out any old buffers remaining from a previous use.
314 error = vfs_mountedon(devvp);
317 ncount = count_udev(devvp->v_udev);
318 #if defined(__DragonFly__)
322 if (ncount > 0 && devvp != rootvp)
325 #if defined(__DragonFly__)
326 VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, td);
327 error = vinvalbuf(devvp, V_SAVE, td, 0, 0);
328 VOP__UNLOCK(devvp, 0, td);
330 error = vinvalbuf(devvp, V_SAVE, td, 0, 0);
335 ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
336 VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, td);
337 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, td);
338 VOP__UNLOCK(devvp, 0, td);
346 hpmp = malloc(sizeof(struct hpfsmount), M_HPFSMNT, M_WAITOK);
347 bzero(hpmp, sizeof(struct hpfsmount));
349 /* Read in SuperBlock */
350 error = bread(devvp, SUBLOCK, SUSIZE, &bp);
353 bcopy(bp->b_data, &hpmp->hpm_su, sizeof(struct sublock));
354 brelse(bp); bp = NULL;
356 /* Read in SpareBlock */
357 error = bread(devvp, SPBLOCK, SPSIZE, &bp);
360 bcopy(bp->b_data, &hpmp->hpm_sp, sizeof(struct spblock));
361 brelse(bp); bp = NULL;
367 if (sup->su_magic != SU_MAGIC) {
368 printf("hpfs_mountfs: SuperBlock MAGIC DOESN'T MATCH\n");
372 if (spp->sp_magic != SP_MAGIC) {
373 printf("hpfs_mountfs: SpareBlock MAGIC DOESN'T MATCH\n");
378 mp->mnt_data = (qaddr_t)hpmp;
379 hpmp->hpm_devvp = devvp;
382 hpmp->hpm_uid = argsp->uid;
383 hpmp->hpm_gid = argsp->gid;
384 hpmp->hpm_mode = argsp->mode;
386 error = hpfs_bminit(hpmp);
390 error = hpfs_cpinit(hpmp, argsp);
396 error = hpfs_root(mp, &vp);
405 #if defined(__DragonFly__)
406 mp->mnt_stat.f_fsid.val[0] = (long)dev2udev(dev);
407 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
409 mp->mnt_stat.f_fsid.val[0] = (long)dev;
410 mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_HPFS);
412 mp->mnt_maxsymlinklen = 0;
413 mp->mnt_flag |= MNT_LOCAL;
414 dev->si_mountpoint = mp;
420 mp->mnt_data = (qaddr_t)NULL;
421 #if defined(__DragonFly__)
422 dev->si_mountpoint = NULL;
424 devvp->v_specflags &= ~SI_MOUNTEDON;
426 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, td);
430 #if !defined(__DragonFly__)
432 hpfs_start(struct mount *mp, int flags, struct thread *td)
439 hpfs_unmount(struct mount *mp, int mntflags, struct thread *td)
441 int error, flags, ronly;
442 struct hpfsmount *hpmp = VFSTOHPFS(mp);
444 dprintf(("hpfs_unmount():\n"));
446 ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
449 if(mntflags & MNT_FORCE)
452 dprintf(("hpfs_unmount: vflushing...\n"));
454 error = vflush(mp, 0, flags);
456 printf("hpfs_unmount: vflush failed: %d\n",error);
460 #if defined(__DragonFly__)
461 hpmp->hpm_devvp->v_rdev->si_mountpoint = NULL;
463 hpmp->hpm_devvp->v_specflags &= ~SI_MOUNTEDON;
466 vinvalbuf(hpmp->hpm_devvp, V_SAVE, td, 0, 0);
467 error = VOP_CLOSE(hpmp->hpm_devvp, ronly ? FREAD : FREAD|FWRITE, td);
469 vrele(hpmp->hpm_devvp);
471 dprintf(("hpfs_umount: freeing memory...\n"));
474 mp->mnt_data = (qaddr_t)0;
475 mp->mnt_flag &= ~MNT_LOCAL;
476 FREE(hpmp, M_HPFSMNT);
482 hpfs_root(struct mount *mp, struct vnode **vpp)
485 struct hpfsmount *hpmp = VFSTOHPFS(mp);
487 dprintf(("hpfs_root():\n"));
488 error = VFS_VGET(mp, (ino_t)hpmp->hpm_su.su_rootfno, vpp);
490 printf("hpfs_root: VFS_VGET failed: %d\n",error);
498 hpfs_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
500 struct hpfsmount *hpmp = VFSTOHPFS(mp);
502 dprintf(("hpfs_statfs(): HPFS%d.%d\n",
503 hpmp->hpm_su.su_hpfsver, hpmp->hpm_su.su_fnctver));
505 #if defined(__DragonFly__)
506 sbp->f_type = mp->mnt_vfc->vfc_typenum;
507 #else /* defined(__NetBSD__) */
510 sbp->f_bsize = DEV_BSIZE;
511 sbp->f_iosize = DEV_BSIZE;
512 sbp->f_blocks = hpmp->hpm_su.su_btotal;
513 sbp->f_bfree = sbp->f_bavail = hpmp->hpm_bavail;
516 if (sbp != &mp->mnt_stat) {
517 bcopy((caddr_t)mp->mnt_stat.f_mntonname,
518 (caddr_t)&sbp->f_mntonname[0], MNAMELEN);
519 bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
520 (caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
522 sbp->f_flags = mp->mnt_flag;
527 #if !defined(__DragonFly__)
529 hpfs_sync(struct mount *mp, int waitfor, struct ucred *cred,
536 hpfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
539 printf("hpfs_quotactl():\n");
546 hpfs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp)
549 struct hpfid *hpfhp = (struct hpfid *)fhp;
552 if ((error = VFS_VGET(mp, hpfhp->hpfid_ino, &nvp)) != 0) {
556 /* XXX as unlink/rmdir/mkdir/creat are not currently possible
557 * with HPFS, we don't need to check anything else for now */
564 hpfs_vptofh(struct vnode *vp, struct fid *fhp)
566 struct hpfsnode *hpp;
570 hpfhp = (struct hpfid *)fhp;
571 hpfhp->hpfid_len = sizeof(struct hpfid);
572 hpfhp->hpfid_ino = hpp->h_no;
573 /* hpfhp->hpfid_gen = hpp->h_gen; */
578 hpfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
580 struct hpfsmount *hpmp = VFSTOHPFS(mp);
584 struct thread *td = curthread; /* XXX */
587 dprintf(("hpfs_vget(0x%x): ",ino));
593 if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino, td)) != NULL) {
594 dprintf(("hashed\n"));
599 * We have to lock node creation for a while,
600 * but then we have to call getnewvnode(),
601 * this may cause hpfs_reclaim() to be called,
602 * this may need to VOP_VGET() parent dir for
603 * update reasons, and if parent is not in
604 * hash, we have to lock node creation...
605 * To solve this, we MALLOC, getnewvnode and init while
606 * not locked (probability of node appearence
607 * at that time is little, and anyway - we'll
610 MALLOC(hp, struct hpfsnode *, sizeof(struct hpfsnode),
613 error = getnewvnode(VT_HPFS, hpmp->hpm_mp, hpfs_vnodeop_p, &vp);
615 printf("hpfs_vget: can't get new vnode\n");
620 dprintf(("prenew "));
624 if (ino == (ino_t)hpmp->hpm_su.su_rootfno)
627 lwkt_token_init(&hp->h_interlock);
628 lockinit(&hp->h_lock, 0, "hpnode", VLKTIMEOUT, 0);
630 hp->h_flag = H_INVAL;
634 hp->h_dev = hpmp->hpm_dev;
635 hp->h_uid = hpmp->hpm_uid;
636 hp->h_gid = hpmp->hpm_uid;
637 hp->h_mode = hpmp->hpm_mode;
638 hp->h_devvp = hpmp->hpm_devvp;
641 error = VN_LOCK(vp, LK_EXCLUSIVE, td);
648 if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino, td)) != NULL) {
649 dprintf(("hashed2\n"));
653 } while(LOCKMGR(&hpfs_hphash_lock,LK_EXCLUSIVE|LK_SLEEPFAIL,NULL,NULL));
657 LOCKMGR(&hpfs_hphash_lock, LK_RELEASE, NULL, NULL);
659 error = bread(hpmp->hpm_devvp, ino, FNODESIZE, &bp);
661 printf("hpfs_vget: can't read ino %d\n",ino);
665 bcopy(bp->b_data, &hp->h_fn, sizeof(struct fnode));
668 if (hp->h_fn.fn_magic != FN_MAGIC) {
669 printf("hpfs_vget: MAGIC DOESN'T MATCH\n");
674 vp->v_type = hp->h_fn.fn_flag ? VDIR:VREG;
675 hp->h_flag &= ~H_INVAL;
682 #if defined(__DragonFly__)
683 static struct vfsops hpfs_vfsops = {
699 VFS_SET(hpfs_vfsops, hpfs, 0);
700 #else /* defined(__NetBSD__) */
701 extern struct vnodeopv_desc hpfs_vnodeop_opv_desc;
703 struct vnodeopv_desc *hpfs_vnodeopv_descs[] = {
704 &hpfs_vnodeop_opv_desc,
708 struct vfsops hpfs_vfsops = {