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
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/namei.h>
35 #include <sys/kernel.h>
36 #include <sys/vnode.h>
37 #include <sys/mount.h>
40 #include <sys/fcntl.h>
41 #include <sys/malloc.h>
43 #include <geom/geom.h>
44 #include <geom/geom_vfs.h>
47 #include <vm/vm_param.h>
48 #include <vm/vm_page.h>
49 #include <vm/vm_object.h>
50 #include <vm/vm_extern.h>
52 #include <fs/hpfs/hpfs.h>
53 #include <fs/hpfs/hpfsmount.h>
54 #include <fs/hpfs/hpfs_subr.h>
56 MALLOC_DEFINE(M_HPFSMNT, "HPFS mount", "HPFS mount structure");
57 MALLOC_DEFINE(M_HPFSNO, "HPFS node", "HPFS node structure");
61 static int hpfs_mountfs(register struct vnode *, struct mount *,
64 static vfs_init_t hpfs_init;
65 static vfs_uninit_t hpfs_uninit;
66 static vfs_fhtovp_t hpfs_fhtovp;
67 static vfs_vget_t hpfs_vget;
68 static vfs_cmount_t hpfs_cmount;
69 static vfs_mount_t hpfs_mount;
70 static vfs_root_t hpfs_root;
71 static vfs_statfs_t hpfs_statfs;
72 static vfs_unmount_t hpfs_unmount;
73 static vfs_vptofh_t hpfs_vptofh;
79 dprintf(("hpfs_init():\n"));
100 struct hpfs_args args;
103 error = copyin(data, (caddr_t)&args, sizeof (struct hpfs_args));
107 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
108 ma = mount_arg(ma, "export", &args.export, sizeof args.export);
109 ma = mount_argf(ma, "uid", "%d", args.uid);
110 ma = mount_argf(ma, "gid", "%d", args.gid);
111 ma = mount_argf(ma, "mode", "%d", args.mode);
112 if (args.flags & HPFSMNT_TABLES) {
113 ma = mount_arg(ma, "d2u", args.d2u, sizeof args.d2u);
114 ma = mount_arg(ma, "u2d", args.u2d, sizeof args.u2d);
117 error = kernel_mount(ma, flags);
122 static const char *hpfs_opts[] = {
123 "from", "export", "uid", "gid", "mode", "d2u", "u2d", NULL
133 struct hpfsmount *hpmp = 0;
134 struct nameidata ndp;
135 struct export_args export;
138 dprintf(("hpfs_omount():\n"));
141 * Mounting non-root filesystem or updating a filesystem
144 if (vfs_filteropt(mp->mnt_optnew, hpfs_opts))
147 from = vfs_getopts(mp->mnt_optnew, "from", &error);
152 * If updating, check whether changing from read-only to
153 * read/write; if there is no device name, that's all we do.
155 if (mp->mnt_flag & MNT_UPDATE) {
156 dprintf(("hpfs_omount: MNT_UPDATE: "));
158 hpmp = VFSTOHPFS(mp);
161 error = vfs_copyopt(mp->mnt_optnew, "export",
162 &export, sizeof export);
165 dprintf(("export 0x%x\n",args.export.ex_flags));
166 err = vfs_export(mp, &export);
168 printf("hpfs_omount: vfs_export failed %d\n",
173 dprintf(("name [FAILED]\n"));
181 * Not an update, or updating the name: look up the name
182 * and verify that it refers to a sensible block device.
184 NDINIT(&ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, from, td);
187 /* can't get devvp!*/
193 if (!vn_isdisk(devvp, &err))
203 * Since this is a new mount, we want the names for
204 * the device and the mount point copied in. If an
205 * error occurs, the mountpoint is discarded by the
206 * upper level code. Note that vfs_omount() handles
207 * copying the mountpoint f_mntonname for us, so we
208 * don't have to do it here unless we want to set it
209 * to something other than "path" for some rason.
211 /* Save "mounted from" info for mount point (NULL pad)*/
212 vfs_mountedfrom(mp, from);
214 err = hpfs_mountfs(devvp, mp, td);
221 error_2: /* error with devvp held*/
223 /* release devvp before failing*/
226 error_1: /* no state to back out*/
227 /* XXX: Missing NDFREE(&ndp, ...) */
234 * Common code for mount and mountroot
237 hpfs_mountfs(devvp, mp, td)
238 register struct vnode *devvp;
245 struct hpfsmount *hpmp;
246 struct buf *bp = NULL;
248 struct cdev *dev = devvp->v_rdev;
249 struct g_consumer *cp;
252 if (mp->mnt_flag & MNT_ROOTFS)
254 dprintf(("hpfs_mountfs():\n"));
255 ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
256 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, td);
257 /* XXX: use VOP_ACCESS to check FS perms */
260 error = g_vfs_open(devvp, &cp, "hpfs", ronly ? 0 : 1);
263 VOP_UNLOCK(devvp, 0, td);
267 bo = &devvp->v_bufobj;
269 bo->bo_ops = g_vfs_bufops;
274 hpmp = malloc(sizeof(struct hpfsmount), M_HPFSMNT, M_WAITOK | M_ZERO);
279 /* Read in SuperBlock */
280 error = bread(devvp, SUBLOCK, SUSIZE, NOCRED, &bp);
283 bcopy(bp->b_data, &hpmp->hpm_su, sizeof(struct sublock));
284 brelse(bp); bp = NULL;
286 /* Read in SpareBlock */
287 error = bread(devvp, SPBLOCK, SPSIZE, NOCRED, &bp);
290 bcopy(bp->b_data, &hpmp->hpm_sp, sizeof(struct spblock));
291 brelse(bp); bp = NULL;
297 if (sup->su_magic != SU_MAGIC) {
298 printf("hpfs_mountfs: SuperBlock MAGIC DOESN'T MATCH\n");
302 if (spp->sp_magic != SP_MAGIC) {
303 printf("hpfs_mountfs: SpareBlock MAGIC DOESN'T MATCH\n");
308 mp->mnt_data = (qaddr_t)hpmp;
309 hpmp->hpm_devvp = devvp;
310 hpmp->hpm_dev = devvp->v_rdev;
312 if (1 == vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v))
314 if (1 == vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v))
316 if (1 == vfs_scanopt(mp->mnt_optnew, "mode", "%d", &v))
319 error = hpfs_bminit(hpmp);
323 error = hpfs_cpinit(mp, hpmp);
329 error = hpfs_root(mp, &vp, td);
338 mp->mnt_stat.f_fsid.val[0] = (long)dev2udev(dev);
339 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
340 mp->mnt_maxsymlinklen = 0;
341 mp->mnt_flag |= MNT_LOCAL;
347 mp->mnt_data = (qaddr_t)NULL;
348 g_wither_geom_close(cp->geom, ENXIO);
358 int error, flags, ronly;
359 register struct hpfsmount *hpmp = VFSTOHPFS(mp);
361 dprintf(("hpfs_unmount():\n"));
363 ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
366 if(mntflags & MNT_FORCE)
369 dprintf(("hpfs_unmount: vflushing...\n"));
371 error = vflush(mp, 0, flags, td);
373 printf("hpfs_unmount: vflush failed: %d\n",error);
377 vinvalbuf(hpmp->hpm_devvp, V_SAVE, td, 0, 0);
378 g_wither_geom_close(hpmp->hpm_cp->geom, ENXIO);
379 vrele(hpmp->hpm_devvp);
381 dprintf(("hpfs_umount: freeing memory...\n"));
384 mp->mnt_data = (qaddr_t)0;
385 mp->mnt_flag &= ~MNT_LOCAL;
386 FREE(hpmp, M_HPFSMNT);
398 struct hpfsmount *hpmp = VFSTOHPFS(mp);
400 dprintf(("hpfs_root():\n"));
401 error = VFS_VGET(mp, (ino_t)hpmp->hpm_su.su_rootfno, LK_EXCLUSIVE, vpp);
403 printf("hpfs_root: VFS_VGET failed: %d\n",error);
416 struct hpfsmount *hpmp = VFSTOHPFS(mp);
418 dprintf(("hpfs_statfs(): HPFS%d.%d\n",
419 hpmp->hpm_su.su_hpfsver, hpmp->hpm_su.su_fnctver));
421 sbp->f_type = mp->mnt_vfc->vfc_typenum;
422 sbp->f_bsize = DEV_BSIZE;
423 sbp->f_iosize = DEV_BSIZE;
424 sbp->f_blocks = hpmp->hpm_su.su_btotal;
425 sbp->f_bfree = sbp->f_bavail = hpmp->hpm_bavail;
428 sbp->f_flags = mp->mnt_flag;
441 struct hpfid *hpfhp = (struct hpfid *)fhp;
444 if ((error = VFS_VGET(mp, hpfhp->hpfid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
448 /* XXX as unlink/rmdir/mkdir/creat are not currently possible
449 * with HPFS, we don't need to check anything else for now */
460 register struct hpfsnode *hpp;
461 register struct hpfid *hpfhp;
464 hpfhp = (struct hpfid *)fhp;
465 hpfhp->hpfid_len = sizeof(struct hpfid);
466 hpfhp->hpfid_ino = hpp->h_no;
467 /* hpfhp->hpfid_gen = hpp->h_gen; */
478 struct hpfsmount *hpmp = VFSTOHPFS(mp);
482 struct thread *td = curthread; /* XXX */
485 dprintf(("hpfs_vget(0x%x): ",ino));
491 if ((error = hpfs_hphashvget(hpmp->hpm_dev, ino, flags, vpp, td)) != 0)
494 dprintf(("hashed\n"));
499 * We have to lock node creation for a while,
500 * but then we have to call getnewvnode(),
501 * this may cause hpfs_reclaim() to be called,
502 * this may need to VOP_VGET() parent dir for
503 * update reasons, and if parent is not in
504 * hash, we have to lock node creation...
505 * To solve this, we MALLOC, getnewvnode and init while
506 * not locked (probability of node appearence
507 * at that time is little, and anyway - we'll
510 MALLOC(hp, struct hpfsnode *, sizeof(struct hpfsnode),
513 error = getnewvnode("hpfs", hpmp->hpm_mp, &hpfs_vnodeops, &vp);
515 printf("hpfs_vget: can't get new vnode\n");
520 dprintf(("prenew "));
524 if (ino == (ino_t)hpmp->hpm_su.su_rootfno)
525 vp->v_vflag |= VV_ROOT;
528 mtx_init(&hp->h_interlock, "hpfsnode interlock", NULL, MTX_DEF);
530 hp->h_flag = H_INVAL;
534 hp->h_dev = hpmp->hpm_dev;
535 hp->h_uid = hpmp->hpm_uid;
536 hp->h_gid = hpmp->hpm_uid;
537 hp->h_mode = hpmp->hpm_mode;
538 hp->h_devvp = hpmp->hpm_devvp;
541 error = vn_lock(vp, LK_EXCLUSIVE, td);
549 hpfs_hphashvget(hpmp->hpm_dev, ino, flags, vpp, td))) {
554 dprintf(("hashed2\n"));
558 } while(lockmgr(&hpfs_hphash_lock,LK_EXCLUSIVE|LK_SLEEPFAIL,NULL,NULL));
562 lockmgr(&hpfs_hphash_lock, LK_RELEASE, NULL, NULL);
564 error = bread(hpmp->hpm_devvp, ino, FNODESIZE, NOCRED, &bp);
566 printf("hpfs_vget: can't read ino %d\n",ino);
570 bcopy(bp->b_data, &hp->h_fn, sizeof(struct fnode));
573 if (hp->h_fn.fn_magic != FN_MAGIC) {
574 printf("hpfs_vget: MAGIC DOESN'T MATCH\n");
579 vp->v_type = hp->h_fn.fn_flag ? VDIR:VREG;
580 hp->h_flag &= ~H_INVAL;
587 static struct vfsops hpfs_vfsops = {
588 .vfs_fhtovp = hpfs_fhtovp,
589 .vfs_init = hpfs_init,
590 .vfs_cmount = hpfs_cmount,
591 .vfs_mount = hpfs_mount,
592 .vfs_root = hpfs_root,
593 .vfs_statfs = hpfs_statfs,
594 .vfs_uninit = hpfs_uninit,
595 .vfs_unmount = hpfs_unmount,
596 .vfs_vget = hpfs_vget,
597 .vfs_vptofh = hpfs_vptofh,
599 VFS_SET(hpfs_vfsops, hpfs, 0);