File:  [DragonFly] / src / sys / vfs / udf / udf_vfsops.c
Revision 1.4: download - view: text, annotated - select for diffs
Sat Apr 24 04:32:05 2004 UTC (10 years, 5 months ago) by drhodus
Branches: MAIN
CVS tags: HEAD
Remove the VREF() macro and uses of it.
Remove uses of 0x20 before ^I inside vnode.h

    1: /*-
    2:  * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
    3:  * All rights reserved.
    4:  *
    5:  * Redistribution and use in source and binary forms, with or without
    6:  * modification, are permitted provided that the following conditions
    7:  * are met:
    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.
   13:  *
   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
   24:  * SUCH DAMAGE.
   25:  *
   26:  * $FreeBSD: src/sys/fs/udf/udf_vfsops.c,v 1.16 2003/11/05 06:56:08 scottl Exp $
   27:  * $DragonFly: src/sys/vfs/udf/udf_vfsops.c,v 1.4 2004/04/24 04:32:05 drhodus Exp $
   28:  */
   29: 
   30: /* udf_vfsops.c */
   31: /* Implement the VFS side of things */
   32: 
   33: /*
   34:  * Ok, here's how it goes.  The UDF specs are pretty clear on how each data
   35:  * structure is made up, but not very clear on how they relate to each other.
   36:  * Here is the skinny... This demostrates a filesystem with one file in the
   37:  * root directory.  Subdirectories are treated just as normal files, but they
   38:  * have File Id Descriptors of their children as their file data.  As for the
   39:  * Anchor Volume Descriptor Pointer, it can exist in two of the following three
   40:  * places: sector 256, sector n (the max sector of the disk), or sector
   41:  * n - 256.  It's a pretty good bet that one will exist at sector 256 though.
   42:  * One caveat is unclosed CD media.  For that, sector 256 cannot be written,
   43:  * so the Anchor Volume Descriptor Pointer can exist at sector 512 until the
   44:  * media is closed.
   45:  *
   46:  *  Sector:
   47:  *     256:
   48:  *       n: Anchor Volume Descriptor Pointer
   49:  * n - 256:	|
   50:  *		|
   51:  *		|-->Main Volume Descriptor Sequence
   52:  *			|	|
   53:  *			|	|
   54:  *			|	|-->Logical Volume Descriptor
   55:  *			|			  |
   56:  *			|-->Partition Descriptor  |
   57:  *				|		  |
   58:  *				|		  |
   59:  *				|-->Fileset Descriptor
   60:  *					|
   61:  *					|
   62:  *					|-->Root Dir File Entry
   63:  *						|
   64:  *						|
   65:  *						|-->File data:
   66:  *						    File Id Descriptor
   67:  *							|
   68:  *							|
   69:  *							|-->File Entry
   70:  *								|
   71:  *								|
   72:  *								|-->File data
   73:  */
   74: 
   75: #include <sys/types.h>
   76: #include <sys/param.h>
   77: #include <sys/systm.h>
   78: #include <sys/uio.h>
   79: #include <sys/buf.h>
   80: #include <sys/conf.h>
   81: #include <sys/dirent.h>
   82: #include <sys/fcntl.h>
   83: #include <sys/module.h>
   84: #include <sys/kernel.h>
   85: #include <sys/malloc.h>
   86: #include <sys/mount.h>
   87: #include <sys/namei.h>
   88: #include <sys/proc.h>
   89: #include <sys/queue.h>
   90: #include <sys/vnode.h>
   91: 
   92: #include <vfs/udf/ecma167-udf.h>
   93: #include <vfs/udf/osta.h>
   94: #include <vfs/udf/udf.h>
   95: #include <vfs/udf/udf_mount.h>
   96: 
   97: MALLOC_DEFINE(M_UDFNODE, "UDF node", "UDF node structure");
   98: MALLOC_DEFINE(M_UDFMOUNT, "UDF mount", "UDF mount structure");
   99: MALLOC_DEFINE(M_UDFFENTRY, "UDF fentry", "UDF file entry structure");
  100: 
  101: static int udf_mount(struct mount *, char *, caddr_t, struct nameidata *,
  102: 		     struct thread *);
  103: static int udf_unmount(struct mount *, int, struct thread *);
  104: static int udf_root(struct mount *, struct vnode **);
  105: static int udf_statfs(struct mount *, struct statfs *, struct thread *);
  106: static int udf_fhtovp(struct mount *, struct fid *, struct vnode **);
  107: static int udf_vptofh(struct vnode *, struct fid *);
  108: 
  109: static int udf_find_partmaps(struct udf_mnt *, struct logvol_desc *);
  110: 
  111: static struct vfsops udf_vfsops = {
  112: 	udf_mount,
  113: 	vfs_stdstart,
  114: 	udf_unmount,
  115: 	udf_root,
  116: 	vfs_stdquotactl,
  117: 	udf_statfs,
  118: 	vfs_stdsync,
  119: 	udf_vget,
  120: 	udf_fhtovp,
  121: 	vfs_stdcheckexp,
  122: 	udf_vptofh,
  123: 	vfs_stdinit,
  124: 	vfs_stduninit,
  125: 	vfs_stdextattrctl,
  126: };
  127: VFS_SET(udf_vfsops, udf, VFCF_READONLY);
  128: 
  129: MODULE_VERSION(udf, 1);
  130: 
  131: static int udf_mountfs(struct vnode *, struct mount *, struct thread *);
  132: 
  133: static int
  134: udf_mount(struct mount *mp, char *path, caddr_t data, struct nameidata *ndp,
  135: 	  struct thread *td)
  136: {
  137: 	struct vnode *devvp;	/* vnode of the mount device */
  138: 	struct udf_args args;
  139: 	struct udf_mnt *imp = 0;
  140: 	size_t size;
  141: 	int error;
  142: 
  143: 	if ((mp->mnt_flag & MNT_RDONLY) == 0)
  144: 		return (EROFS);
  145: 
  146: 	/*
  147: 	 * No root filesystem support.  Probably not a big deal, since the
  148: 	 * bootloader doesn't understand UDF.
  149: 	 */
  150: 	if (mp->mnt_flag & MNT_ROOTFS)
  151: 		return (ENOTSUP);
  152: 
  153: 	if ((error = copyin(data, (caddr_t)&args, sizeof(struct udf_args))))
  154: 		return(error);
  155: 
  156: 	if (mp->mnt_flag & MNT_UPDATE) {
  157: 		imp = VFSTOUDFFS(mp);
  158: 		if (args.fspec == NULL)
  159: 			return(vfs_export(mp, &imp->im_export, &args.export));
  160: 	}
  161: 
  162: 	/* Check that the mount device exists */
  163: 	NDINIT(ndp, NAMEI_LOOKUP, CNP_FOLLOW, UIO_USERSPACE, args.fspec, td);
  164: 	if ((error = namei(ndp)))
  165: 		return(error);
  166: 	NDFREE(ndp, NDF_ONLY_PNBUF);
  167: 	devvp = ndp->ni_vp;
  168: 
  169: 	if (vn_isdisk(devvp, &error) == 0) {
  170: 		vrele(devvp);
  171: 		return(error);
  172: 	}
  173: 
  174: 	/* Check the access rights on the mount device */
  175: 	vn_lock(devvp, NULL, LK_EXCLUSIVE | LK_RETRY, td);
  176: 	error = VOP_ACCESS(devvp, VREAD, td->td_proc->p_ucred, td);
  177: 	if (error)
  178: 		error = suser(td);
  179: 	if (error) {
  180: 		vput(devvp);
  181: 		return(error);
  182: 	}
  183: 	VOP_UNLOCK(devvp, NULL, 0, td);
  184: 
  185: 	if ((error = udf_mountfs(devvp, mp, td))) {
  186: 		vrele(devvp);
  187: 		return(error);
  188: 	}
  189: 
  190: 	imp = VFSTOUDFFS(mp);
  191: 
  192: 	imp->im_flags = args.flags;
  193: 
  194: 	copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size);
  195: 	bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
  196: 	copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size);
  197: 	bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
  198: 	udf_statfs(mp, &mp->mnt_stat, td);
  199: 	return(0);
  200: }
  201: 
  202: /*
  203:  * Check the descriptor tag for both the correct id and correct checksum.
  204:  * Return zero if all is good, EINVAL if not.
  205:  */
  206: int
  207: udf_checktag(struct desc_tag *tag, uint16_t id)
  208: {
  209: 	uint8_t *itag;
  210: 	uint8_t i, cksum = 0;
  211: 
  212: 	itag = (uint8_t *)tag;
  213: 
  214: 	if (tag->id != id)
  215: 		return(EINVAL);
  216: 
  217: 	for (i = 0; i < 15; i++)
  218: 		cksum = cksum + itag[i];
  219: 	cksum = cksum - itag[4];
  220: 
  221: 	if (cksum == tag->cksum)
  222: 		return(0);
  223: 
  224: 	return(EINVAL);
  225: }
  226: 
  227: static int
  228: udf_mountfs(struct vnode *devvp, struct mount *mp, struct thread *td) {
  229: 	struct buf *bp = NULL;
  230: 	struct anchor_vdp avdp;
  231: 	struct udf_mnt *udfmp = NULL;
  232: 	struct part_desc *pd;
  233: 	struct logvol_desc *lvd;
  234: 	struct fileset_desc *fsd;
  235: 	struct file_entry *root_fentry;
  236: 	uint32_t sector, size, mvds_start, mvds_end;
  237: 	uint32_t fsd_offset = 0;
  238: 	uint16_t part_num = 0, fsd_part = 0;
  239: 	int error = EINVAL, needclose = 0;
  240: 	int logvol_found = 0, part_found = 0, fsd_found = 0;
  241: 	int bsize;
  242: 
  243: 	/*
  244: 	 * Disallow multiple mounts of the same device. Flush the buffer
  245: 	 * cache for the device.
  246: 	 */
  247: 	if ((error = vfs_mountedon(devvp)))
  248: 		return(error);
  249: 	if (vcount(devvp) > 1)
  250: 		return(EBUSY);
  251: 	if ((error = vinvalbuf(devvp, V_SAVE, td, 0, 0)))
  252: 		return(error);
  253: 
  254: 	vn_lock(devvp, NULL, LK_EXCLUSIVE | LK_RETRY, td);
  255: 	error = VOP_OPEN(devvp, FREAD, FSCRED, td);
  256: 	VOP_UNLOCK(devvp, NULL, 0, td);
  257: 	if (error)
  258: 		return(error);
  259: 	needclose = 1;
  260: 
  261: 	udfmp = malloc(sizeof(*udfmp), M_UDFMOUNT, M_WAITOK | M_ZERO);
  262: 
  263: 	mp->mnt_data = (qaddr_t)udfmp;
  264: 	mp->mnt_stat.f_fsid.val[0] = dev2udev(devvp->v_rdev);
  265: 	mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
  266: 	mp->mnt_maxsymlinklen = 0;
  267: 	mp->mnt_flag |= MNT_LOCAL;
  268: 	udfmp->im_mountp = mp;
  269: 	udfmp->im_dev = devvp->v_rdev;
  270: 	udfmp->im_devvp = devvp;
  271: 
  272: 	bsize = 2048;	/* XXX Should probe the media for it's size */
  273: 
  274: 	/* 
  275: 	 * Get the Anchor Volume Descriptor Pointer from sector 256.
  276: 	 * XXX Should also check sector n - 256, n, and 512.
  277: 	 */
  278: 	sector = 256;
  279: 	if ((error = bread(devvp, sector * btodb(bsize), bsize, &bp)) != 0)
  280: 		goto bail;
  281: 	if ((error = udf_checktag((struct desc_tag *)bp->b_data, TAGID_ANCHOR)))
  282: 		goto bail;
  283: 
  284: 	bcopy(bp->b_data, &avdp, sizeof(struct anchor_vdp));
  285: 	brelse(bp);
  286: 	bp = NULL;
  287: 
  288: 	/*
  289: 	 * Extract the Partition Descriptor and Logical Volume Descriptor
  290: 	 * from the Volume Descriptor Sequence.
  291: 	 * XXX Should we care about the partition type right now?
  292: 	 * XXX What about multiple partitions?
  293: 	 */
  294: 	mvds_start = avdp.main_vds_ex.loc;
  295: 	mvds_end = mvds_start + (avdp.main_vds_ex.len - 1) / bsize;
  296: 	for (sector = mvds_start; sector < mvds_end; sector++) {
  297: 		if ((error = bread(devvp, sector * btodb(bsize), bsize,
  298: 				   &bp)) != 0) {
  299: 			printf("Can't read sector %d of VDS\n", sector);
  300: 			goto bail;
  301: 		}
  302: 		lvd = (struct logvol_desc *)bp->b_data;
  303: 		if (!udf_checktag(&lvd->tag, TAGID_LOGVOL)) {
  304: 			udfmp->bsize = lvd->lb_size;
  305: 			udfmp->bmask = udfmp->bsize - 1;
  306: 			udfmp->bshift = ffs(udfmp->bsize) - 1;
  307: 			fsd_part = lvd->_lvd_use.fsd_loc.loc.part_num;
  308: 			fsd_offset = lvd->_lvd_use.fsd_loc.loc.lb_num;
  309: 			if (udf_find_partmaps(udfmp, lvd))
  310: 				break;
  311: 			logvol_found = 1;
  312: 		}
  313: 		pd = (struct part_desc *)bp->b_data;
  314: 		if (!udf_checktag(&pd->tag, TAGID_PARTITION)) {
  315: 			part_found = 1;
  316: 			part_num = pd->part_num;
  317: 			udfmp->part_len = pd->part_len;
  318: 			udfmp->part_start = pd->start_loc;
  319: 		}
  320: 
  321: 		brelse(bp); 
  322: 		bp = NULL;
  323: 		if ((part_found) && (logvol_found))
  324: 			break;
  325: 	}
  326: 
  327: 	if (!part_found || !logvol_found) {
  328: 		error = EINVAL;
  329: 		goto bail;
  330: 	}
  331: 
  332: 	if (fsd_part != part_num) {
  333: 		printf("FSD does not lie within the partition!\n");
  334: 		error = EINVAL;
  335: 		goto bail;
  336: 	}
  337: 
  338: 
  339: 	/*
  340: 	 * Grab the Fileset Descriptor
  341: 	 * Thanks to Chuck McCrobie <mccrobie@cablespeed.com> for pointing
  342: 	 * me in the right direction here.
  343: 	 */
  344: 	sector = udfmp->part_start + fsd_offset;
  345: 	if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) {
  346: 		printf("Cannot read sector %d of FSD\n", sector);
  347: 		goto bail;
  348: 	}
  349: 	fsd = (struct fileset_desc *)bp->b_data;
  350: 	if (!udf_checktag(&fsd->tag, TAGID_FSD)) {
  351: 		fsd_found = 1;
  352: 		bcopy(&fsd->rootdir_icb, &udfmp->root_icb,
  353: 		      sizeof(struct long_ad));
  354: 	}
  355: 
  356: 	brelse(bp);
  357: 	bp = NULL;
  358: 
  359: 	if (!fsd_found) {
  360: 		printf("Couldn't find the fsd\n");
  361: 		error = EINVAL;
  362: 		goto bail;
  363: 	}
  364: 
  365: 	/*
  366: 	 * Find the file entry for the root directory.
  367: 	 */
  368: 	sector = udfmp->root_icb.loc.lb_num + udfmp->part_start;
  369: 	size = udfmp->root_icb.len;
  370: 	if ((error = udf_readlblks(udfmp, sector, size, &bp)) != 0) {
  371: 		printf("Cannot read sector %d\n", sector);
  372: 		goto bail;
  373: 	}
  374: 
  375: 	root_fentry = (struct file_entry *)bp->b_data;
  376: 	if ((error = udf_checktag(&root_fentry->tag, TAGID_FENTRY))) {
  377: 		printf("Invalid root file entry!\n");
  378: 		goto bail;
  379: 	}
  380: 
  381: 	brelse(bp);
  382: 	bp = NULL;
  383: 
  384: 	lwkt_token_init(&udfmp->hash_token);
  385: 	udfmp->hashtbl = phashinit(UDF_HASHTBLSIZE, M_UDFMOUNT, &udfmp->hashsz);
  386: 
  387: 	return(0);
  388: 
  389: bail:
  390: 	if (udfmp != NULL)
  391: 		free(udfmp, M_UDFMOUNT);
  392: 	if (bp != NULL)
  393: 		brelse(bp);
  394: 	if (needclose)
  395: 		VOP_CLOSE(devvp, FREAD, td);
  396: 	return(error);
  397: }
  398: 
  399: static int
  400: udf_unmount(struct mount *mp, int mntflags, struct thread *td)
  401: {
  402: 	struct udf_mnt *udfmp;
  403: 	int error, flags = 0;
  404: 
  405: 	udfmp = VFSTOUDFFS(mp);
  406: 
  407: 	if (mntflags & MNT_FORCE)
  408: 		flags |= FORCECLOSE;
  409: 
  410: 	if ((error = vflush(mp, 0, flags)))
  411: 		return (error);
  412: 
  413: 	udfmp->im_devvp->v_specmountpoint = NULL;
  414: 	error = VOP_CLOSE(udfmp->im_devvp, FREAD, td);
  415: 	vrele(udfmp->im_devvp);
  416: 
  417: 	if (udfmp->s_table)
  418: 		free(udfmp->s_table, M_UDFMOUNT);
  419: 	if (udfmp->hashtbl)
  420: 		free(udfmp->hashtbl, M_UDFMOUNT);
  421: 	free(udfmp, M_UDFMOUNT);
  422: 
  423: 	mp->mnt_data = (qaddr_t)0;
  424: 	mp->mnt_flag &= ~MNT_LOCAL;
  425: 
  426: 	return (error);
  427: }
  428: 
  429: static int
  430: udf_root(struct mount *mp, struct vnode **vpp)
  431: {
  432: 	struct udf_mnt *udfmp;
  433: 	struct vnode *vp;
  434: 	ino_t id;
  435: 	int error;
  436: 
  437: 	udfmp = VFSTOUDFFS(mp);
  438: 
  439: 	id = udf_getid(&udfmp->root_icb);
  440: 
  441: 	error = udf_vget(mp, id, vpp);
  442: 	if (error)
  443: 		return(error);
  444: 
  445: 	vp = *vpp;
  446: 	vp->v_flag |= VROOT;
  447: 	udfmp->root_vp = vp;
  448: 
  449: 	return(0);
  450: }
  451: 
  452: static int
  453: udf_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
  454: {
  455: 	struct udf_mnt *udfmp;
  456: 
  457: 	udfmp = VFSTOUDFFS(mp);
  458: 
  459: 	sbp->f_bsize = udfmp->bsize;
  460: 	sbp->f_iosize = udfmp->bsize;
  461: 	sbp->f_blocks = udfmp->part_len;
  462: 	sbp->f_bfree = 0;
  463: 	sbp->f_bavail = 0;
  464: 	sbp->f_files = 0;
  465: 	sbp->f_ffree = 0;
  466: 	if (sbp != &mp->mnt_stat) {
  467: 		sbp->f_type = mp->mnt_vfc->vfc_typenum;
  468: 		bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
  469: 		bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
  470: 	}
  471: 
  472: 	return(0);
  473: }
  474: 
  475: int
  476: udf_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
  477: {
  478: 	struct buf *bp;
  479: 	struct vnode *devvp;
  480: 	struct udf_mnt *udfmp;
  481: 	struct thread *td;
  482: 	struct vnode *vp;
  483: 	struct udf_node *unode;
  484: 	struct file_entry *fe;
  485: 	int error, sector, size;
  486: 
  487: 	td = curthread;
  488: 	udfmp = VFSTOUDFFS(mp);
  489: 
  490: 	/* See if we already have this in the cache */
  491: 	if ((error = udf_hashlookup(udfmp, ino, vpp)) != 0)
  492: 		return(error);
  493: 	if (*vpp != NULL) {
  494: 		return(0);
  495: 	}
  496: 
  497: 	/*
  498: 	 * Allocate memory and check the tag id's before grabbing a new
  499: 	 * vnode, since it's hard to roll back if there is a problem.
  500: 	 */
  501: 	unode = malloc(sizeof(*unode), M_UDFNODE, M_WAITOK | M_ZERO);
  502: 
  503: 	/*
  504: 	 * Copy in the file entry.  Per the spec, the size can only be 1 block.
  505: 	 */
  506: 	sector = ino + udfmp->part_start;
  507: 	devvp = udfmp->im_devvp;
  508: 	if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) {
  509: 		printf("Cannot read sector %d\n", sector);
  510: 		free(unode, M_UDFNODE);
  511: 		return(error);
  512: 	}
  513: 
  514: 	fe = (struct file_entry *)bp->b_data;
  515: 	if (udf_checktag(&fe->tag, TAGID_FENTRY)) {
  516: 		printf("Invalid file entry!\n");
  517: 		free(unode, M_UDFNODE);
  518: 		brelse(bp);
  519: 		return(ENOMEM);
  520: 	}
  521: 	size = UDF_FENTRY_SIZE + fe->l_ea + fe->l_ad;
  522: 	unode->fentry = malloc(size, M_UDFFENTRY, M_WAITOK | M_ZERO);
  523: 
  524: 	bcopy(bp->b_data, unode->fentry, size);
  525: 	
  526: 	brelse(bp);
  527: 	bp = NULL;
  528: 
  529: 	if ((error = udf_allocv(mp, &vp))) {
  530: 		printf("Error from udf_allocv\n");
  531: 		free(unode, M_UDFNODE);
  532: 		return(error);
  533: 	}
  534: 
  535: 	unode->i_vnode = vp;
  536: 	unode->hash_id = ino;
  537: 	unode->i_devvp = udfmp->im_devvp;
  538: 	unode->i_dev = udfmp->im_dev;
  539: 	unode->udfmp = udfmp;
  540: 	vp->v_data = unode;
  541: 	vref(udfmp->im_devvp);
  542: 	udf_hashins(unode);
  543: 
  544: 	switch (unode->fentry->icbtag.file_type) {
  545: 	default:
  546: 		vp->v_type = VBAD;
  547: 		break;
  548: 	case 4:
  549: 		vp->v_type = VDIR;
  550: 		break;
  551: 	case 5:
  552: 		vp->v_type = VREG;
  553: 		break;
  554: 	case 6:
  555: 		vp->v_type = VBLK;
  556: 		break;
  557: 	case 7:
  558: 		vp->v_type = VCHR;
  559: 		break;
  560: 	case 9:
  561: 		vp->v_type = VFIFO;
  562: 		break;
  563: 	case 10:
  564: 		vp->v_type = VSOCK;
  565: 		break;
  566: 	case 12:
  567: 		vp->v_type = VLNK;
  568: 		break;
  569: 	}
  570: 	*vpp = vp;
  571: 
  572: 	return(0);
  573: }
  574: 
  575: struct ifid {
  576: 	u_short	ifid_len;
  577: 	u_short	ifid_pad;
  578: 	int	ifid_ino;
  579: 	long	ifid_start;
  580: };
  581: 
  582: static int
  583: udf_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp)
  584: {
  585: 	struct ifid *ifhp;
  586: 	struct vnode *nvp;
  587: 	int error;
  588: 
  589: 	ifhp = (struct ifid *)fhp;
  590: 
  591: 	if ((error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) != 0) {
  592: 		*vpp = NULLVP;
  593: 		return(error);
  594: 	}
  595: 
  596: 	*vpp = nvp;
  597: 	return(0);
  598: }
  599: 
  600: static int
  601: udf_vptofh (struct vnode *vp, struct fid *fhp)
  602: {
  603: 	struct udf_node *node;
  604: 	struct ifid *ifhp;
  605: 
  606: 	node = VTON(vp);
  607: 	ifhp = (struct ifid *)fhp;
  608: 	ifhp->ifid_len = sizeof(struct ifid);
  609: 	ifhp->ifid_ino = node->hash_id;
  610: 
  611: 	return(0);
  612: }
  613: 
  614: static int
  615: udf_find_partmaps(struct udf_mnt *udfmp, struct logvol_desc *lvd)
  616: {
  617: 	union udf_pmap *pmap;
  618: 	struct part_map_spare *pms;
  619: 	struct regid *pmap_id;
  620: 	struct buf *bp;
  621: 	unsigned char regid_id[UDF_REGID_ID_SIZE + 1];
  622: 	int ptype, psize, error;
  623: 	unsigned int i;
  624: 
  625: 	for (i = 0; i < lvd->n_pm; i++) {
  626: 		pmap = (union udf_pmap *)&lvd->maps[i * UDF_PMAP_SIZE];
  627: 		ptype = pmap->data[0];
  628: 		psize = pmap->data[1];
  629: 		if (((ptype != 1) && (ptype != 2)) ||
  630: 		    ((psize != UDF_PMAP_SIZE) && (psize != 6))) {
  631: 			printf("Invalid partition map found\n");
  632: 			return(1);
  633: 		}
  634: 
  635: 		if (ptype == 1) {
  636: 			/* Type 1 map.  We don't care */
  637: 			continue;
  638: 		}
  639: 
  640: 		/* Type 2 map.  Gotta find out the details */
  641: 		pmap_id = (struct regid *)&pmap->data[4];
  642: 		bzero(&regid_id[0], UDF_REGID_ID_SIZE);
  643: 		bcopy(&pmap_id->id[0], &regid_id[0], UDF_REGID_ID_SIZE);
  644: 
  645: 		if (bcmp(&regid_id[0], "*UDF Sparable Partition",
  646: 		    UDF_REGID_ID_SIZE)) {
  647: 			printf("Unsupported partition map: %s\n", &regid_id[0]);
  648: 			return(1);
  649: 		}
  650: 
  651: 		pms = &pmap->pms;
  652: 		udfmp->s_table = malloc(pms->st_size, M_UDFMOUNT,
  653: 					M_WAITOK | M_ZERO);
  654: 		if (udfmp->s_table == NULL)
  655: 			return(ENOMEM);
  656: 
  657: 		/* Calculate the number of sectors per packet. */
  658: 		/* XXX Logical or physical? */
  659: 		udfmp->p_sectors = pms->packet_len / udfmp->bsize;
  660: 
  661: 		/*
  662: 		 * XXX If reading the first Sparing Table fails, should look
  663: 		 * for another table.
  664: 		 */
  665: 		if ((error = udf_readlblks(udfmp, pms->st_loc[0], pms->st_size,
  666: 		    &bp)) != 0) {
  667: 			if (bp)
  668: 				brelse(bp);
  669: 			printf("Failed to read Sparing Table at sector %d\n",
  670: 			    pms->st_loc[0]);
  671: 			return(error);
  672: 		}
  673: 		bcopy(bp->b_data, udfmp->s_table, pms->st_size);
  674: 		brelse(bp);
  675: 
  676: 		if (udf_checktag(&udfmp->s_table->tag, 0)) {
  677: 			printf("Invalid sparing table found\n");
  678: 			return(EINVAL);
  679: 		}
  680: 
  681: 		/* See how many valid entries there are here.  The list is
  682: 		 * supposed to be sorted. 0xfffffff0 and higher are not valid
  683: 		 */
  684: 		for (i = 0; i < udfmp->s_table->rt_l; i++) {
  685: 			udfmp->s_table_entries = i;
  686: 			if (udfmp->s_table->entries[i].org >= 0xfffffff0)
  687: 				break;
  688: 		}
  689: 	}
  690: 
  691: 	return(0);
  692: }