diff options
Diffstat (limited to 'sys/adosfs/adutil.c')
| -rw-r--r-- | sys/adosfs/adutil.c | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/sys/adosfs/adutil.c b/sys/adosfs/adutil.c index b9f0cb48a0a..e69de29bb2d 100644 --- a/sys/adosfs/adutil.c +++ b/sys/adosfs/adutil.c @@ -1,249 +0,0 @@ -/* $OpenBSD: adutil.c,v 1.17 2007/05/28 22:17:21 pyr Exp $ */ -/* $NetBSD: adutil.c,v 1.15 1996/10/13 02:52:07 christos Exp $ */ - -/* - * Copyright (c) 1994 Christian E. Hopps - * Copyright (c) 1996 Matthias Scheler - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Christian E. Hopps. - * 4. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include <sys/param.h> -#include <sys/vnode.h> -#include <sys/mount.h> -#include <sys/proc.h> -#include <sys/systm.h> -#include <sys/malloc.h> -#include <sys/lock.h> -#include <sys/time.h> -#include <sys/queue.h> -#include <sys/buf.h> - -#include <machine/endian.h> - -#include <adosfs/adosfs.h> - -/* - * look for anode in the mount's hash table, return locked. - */ -#define AHASH(an) ((an) & (ANODEHASHSZ - 1)) - -static __inline char CapitalChar(char, int); - -struct vnode * -adosfs_ahashget(mp, an) - struct mount *mp; - ino_t an; -{ - struct anodechain *hp; - struct anode *ap; - struct proc *p = curproc; /* XXX */ - struct vnode *vp; - - hp = &VFSTOADOSFS(mp)->anodetab[AHASH(an)]; - - for (;;) { - LIST_FOREACH(ap, hp, link) { - if (ABLKTOINO(ap->block) == an) { - vp = ATOV(ap); - if (!vget(vp, LK_EXCLUSIVE, p)) - return (vp); - break; - } - } - if (ap == NULL) - return (NULL); - } - /* NOTREACHED */ -} - -/* - * insert in hash table and lock - */ -int -adosfs_ainshash(amp, ap) - struct adosfsmount *amp; - struct anode *ap; -{ - struct anodechain *hp; - struct anode *aq; - - /* lock the inode, then put it on the appropriate hash list */ - lockmgr(&ap->a_lock, LK_EXCLUSIVE, NULL); - - hp = &->anodetab[AHASH(ap->block)]; - - LIST_FOREACH(aq, hp, link) { - if (aq->block == ap->block) { - lockmgr(&ap->a_lock, LK_RELEASE, NULL); - return (EEXIST); - } - } - - LIST_INSERT_HEAD(hp, ap, link); - return (0); -} - -void -adosfs_aremhash(ap) - struct anode *ap; -{ - - if (ap->link.le_prev != NULL) - LIST_REMOVE(ap, link); -} - -int -adosfs_getblktype(amp, bp) - struct adosfsmount *amp; - struct buf *bp; -{ - if (adoscksum(bp, amp->nwords)) { -#ifdef DIAGNOSTIC - printf("adosfs: aget: cksum of blk %d failed\n", - bp->b_blkno / amp->secsperblk); -#endif - return (-1); - } - - /* - * check primary block type - */ - if (adoswordn(bp, 0) != BPT_SHORT) { -#ifdef DIAGNOSTIC - printf("adosfs: aget: bad primary type blk %d\n", - bp->b_blkno / amp->secsperblk); -#endif - return (-1); - } - - switch (adoswordn(bp, amp->nwords - 1)) { - case BST_RDIR: /* root block */ - return (AROOT); - case BST_LDIR: /* hard link to dir */ - return (ALDIR); - case BST_UDIR: /* user dir */ - return (ADIR); - case BST_LFILE: /* hard link to file */ - return (ALFILE); - case BST_FILE: /* file header */ - return (AFILE); - case BST_SLINK: /* soft link */ - return (ASLINK); - } - return (-1); -} - -int -adunixprot(adprot) - int adprot; -{ - if (adprot & 0xc000ee00) { - adprot = (adprot & 0xee0e) >> 1; - return (((adprot & 0x7) << 6) | - ((adprot & 0x700) >> 5) | - ((adprot & 0x7000) >> 12)); - } - else { - adprot = (adprot >> 1) & 0x7; - return((adprot << 6) | (adprot << 3) | adprot); - } -} - -static __inline char -CapitalChar(ch, inter) - char ch; - int inter; -{ - if ((ch >= 'a' && ch <= 'z') || - (inter && ch >= '\xe0' && ch <= '\xfe' && ch != '\xf7')) - return(ch - ('a' - 'A')); - return(ch); -} - -u_int32_t -adoscksum(bp, n) - struct buf *bp; - int n; -{ - u_int32_t sum, *lp; - - lp = (u_int32_t *)bp->b_data; - sum = 0; - - while (n--) - sum += betoh32(*lp++); - return(sum); -} - -int -adoscaseequ(name1, name2, len, inter) - const char *name1, *name2; - int len, inter; -{ - while (len-- > 0) - if (CapitalChar(*name1++, inter) != - CapitalChar(*name2++, inter)) - return 0; - - return 1; -} - -int -adoshash(nam, namlen, nelt, inter) - const char *nam; - int namlen, nelt, inter; -{ - int val; - - val = namlen; - while (namlen--) - val = ((val * 13) + (u_char)CapitalChar(*nam++, inter)) & - 0x7ff; - return(val % nelt); -} - -#ifdef notyet -/* - * datestamp is local time, tv is to be UTC - */ -int -dstotv(dsp, tvp) - struct datestamp *dsp; - struct timeval *tvp; -{ -} - -/* - * tv is UTC, datestamp is to be local time - */ -int -tvtods(tvp, dsp) - struct timeval *tvp; - struct datestamp *dsp; -{ -} -#endif |