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https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-15 23:05:49 +01:00
Fixes for some bugs in the VFAT/FAT32 support:
- 'mv longnamedfile1 longnamedfile2' would cause longnamedfile2 to lose its long name. - Long names have trailing spaces/dots stripped for lookup as well as assignment. - A lockup when the mdsosfs was accessed from within the Linux emulator is fixed. - A bug whereby long filenames were recognised by Microsoft operating systems but not FreeBSD is fixed. Submitted by: Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
This commit is contained in:
Mike Smith
parent
ce75f2c365
commit
69a36f24fb
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=33848
@ -1,4 +1,4 @@
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/* $Id: direntry.h,v 1.10 1998/02/23 16:44:26 ache Exp $ */
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/* $Id: direntry.h,v 1.11 1998/02/24 14:13:08 ache Exp $ */
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/* $NetBSD: direntry.h,v 1.14 1997/11/17 15:36:32 ws Exp $ */
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/*-
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@ -137,4 +137,5 @@ int winChkName __P((const u_char *un, int unlen, struct winentry *wep, int chksu
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int win2unixfn __P((struct winentry *wep, struct dirent *dp, int chksum, int table_loaded, u_int16_t *u2w));
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u_int8_t winChksum __P((u_int8_t *name));
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int winSlotCnt __P((const u_char *un, int unlen));
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int winLenFixup __P((const u_char *un, int unlen));
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#endif /* KERNEL */
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@ -1,4 +1,4 @@
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/* $Id: msdosfs_conv.c,v 1.22 1998/02/23 16:44:27 ache Exp $ */
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/* $Id: msdosfs_conv.c,v 1.23 1998/02/24 14:13:11 ache Exp $ */
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/* $NetBSD: msdosfs_conv.c,v 1.25 1997/11/17 15:36:40 ws Exp $ */
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/*-
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@ -995,10 +995,22 @@ winSlotCnt(un, unlen)
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const u_char *un;
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int unlen;
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{
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for (un += unlen; unlen > 0; unlen--)
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if (*--un != ' ' && *un != '.')
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break;
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unlen = winLenFixup(un, unlen);
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if (unlen > WIN_MAXLEN)
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return 0;
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return howmany(unlen, WIN_CHARS);
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}
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/*
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* Determine the number of bytes neccesary for Win95 names
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*/
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int
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winLenFixup(un, unlen)
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const u_char* un;
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int unlen;
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{
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for (un += unlen; unlen > 0; unlen--)
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if (*--un != ' ' && *un != '.')
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break;
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return unlen;
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}
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@ -1,4 +1,4 @@
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/* $Id: msdosfs_lookup.c,v 1.20 1998/02/23 16:44:30 ache Exp $ */
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/* $Id: msdosfs_lookup.c,v 1.21 1998/02/24 14:13:13 ache Exp $ */
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/* $NetBSD: msdosfs_lookup.c,v 1.37 1997/11/17 15:36:54 ws Exp $ */
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/*-
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@ -114,6 +114,7 @@ msdosfs_lookup(ap)
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int flags = cnp->cn_flags;
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int nameiop = cnp->cn_nameiop;
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struct proc *p = cnp->cn_proc;
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int unlen;
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int wincnt = 1;
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int chksum = -1;
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@ -170,6 +171,7 @@ msdosfs_lookup(ap)
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}
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if (pmp->pm_flags & MSDOSFSMNT_SHORTNAME)
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wincnt = 1;
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unlen = winLenFixup(cnp->cn_nameptr, cnp->cn_namelen);
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/*
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* Suppress search for slots unless creating
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@ -255,7 +257,7 @@ msdosfs_lookup(ap)
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continue;
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chksum = winChkName((const u_char *)cnp->cn_nameptr,
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cnp->cn_namelen,
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unlen,
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(struct winentry *)dep,
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chksum,
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pmp->pm_flags & MSDOSFSMNT_U2WTABLE,
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@ -292,7 +294,7 @@ msdosfs_lookup(ap)
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* this lookup.
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*/
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dp->de_fndoffset = diroff;
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dp->de_fndcnt = 0; /* unused anyway */
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dp->de_fndcnt = wincnt;
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goto found;
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}
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@ -1,4 +1,4 @@
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/* $Id: msdosfs_vnops.c,v 1.60 1998/02/23 16:44:36 ache Exp $ */
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/* $Id: msdosfs_vnops.c,v 1.61 1998/02/24 14:13:16 ache Exp $ */
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/* $NetBSD: msdosfs_vnops.c,v 1.68 1998/02/10 14:10:04 mrg Exp $ */
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/*-
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@ -1539,8 +1539,6 @@ msdosfs_readdir(ap)
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long n;
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int blsize;
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long on;
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long lost;
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long count;
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u_long cn;
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u_long fileno;
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u_long dirsperblk;
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@ -1581,13 +1579,10 @@ msdosfs_readdir(ap)
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* entry or the file offset is not a multiple of the size of a
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* directory entry, then we fail the read.
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*/
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count = uio->uio_resid & ~(sizeof(struct direntry) - 1);
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offset = uio->uio_offset;
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if (count < sizeof(struct direntry) ||
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off = offset = uio->uio_offset;
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if (uio->uio_resid < sizeof(struct direntry) ||
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(offset & (sizeof(struct direntry) - 1)))
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return (EINVAL);
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lost = uio->uio_resid - count;
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uio->uio_resid = count;
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if (ap->a_ncookies) {
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ncookies = uio->uio_resid / 16;
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@ -1640,12 +1635,13 @@ msdosfs_readdir(ap)
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dirbuf.d_reclen, uio);
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if (error)
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goto out;
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offset += sizeof(struct direntry);
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off = offset;
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if (cookies) {
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*cookies++ = offset;
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if (--ncookies <= 0)
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goto out;
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}
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offset += sizeof(struct direntry);
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}
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}
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}
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@ -1763,13 +1759,13 @@ msdosfs_readdir(ap)
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goto out;
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}
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if (cookies) {
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*cookies++ = off;
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off = offset + sizeof(struct direntry);
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*cookies++ = offset + sizeof(struct direntry);
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if (--ncookies <= 0) {
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brelse(bp);
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goto out;
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}
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}
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off = offset + sizeof(struct direntry);
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}
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brelse(bp);
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}
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@ -1778,8 +1774,7 @@ out:
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if (ap->a_ncookies)
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*ap->a_ncookies -= ncookies;
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uio->uio_offset = offset;
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uio->uio_resid += lost;
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uio->uio_offset = off;
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/*
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* Set the eofflag (NFS uses it)
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@ -1,4 +1,4 @@
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/* $Id: direntry.h,v 1.10 1998/02/23 16:44:26 ache Exp $ */
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/* $Id: direntry.h,v 1.11 1998/02/24 14:13:08 ache Exp $ */
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/* $NetBSD: direntry.h,v 1.14 1997/11/17 15:36:32 ws Exp $ */
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/*-
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@ -137,4 +137,5 @@ int winChkName __P((const u_char *un, int unlen, struct winentry *wep, int chksu
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int win2unixfn __P((struct winentry *wep, struct dirent *dp, int chksum, int table_loaded, u_int16_t *u2w));
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u_int8_t winChksum __P((u_int8_t *name));
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int winSlotCnt __P((const u_char *un, int unlen));
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int winLenFixup __P((const u_char *un, int unlen));
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#endif /* KERNEL */
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@ -1,4 +1,4 @@
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/* $Id: msdosfs_conv.c,v 1.22 1998/02/23 16:44:27 ache Exp $ */
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/* $Id: msdosfs_conv.c,v 1.23 1998/02/24 14:13:11 ache Exp $ */
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/* $NetBSD: msdosfs_conv.c,v 1.25 1997/11/17 15:36:40 ws Exp $ */
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/*-
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@ -995,10 +995,22 @@ winSlotCnt(un, unlen)
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const u_char *un;
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int unlen;
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{
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for (un += unlen; unlen > 0; unlen--)
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if (*--un != ' ' && *un != '.')
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break;
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unlen = winLenFixup(un, unlen);
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if (unlen > WIN_MAXLEN)
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return 0;
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return howmany(unlen, WIN_CHARS);
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}
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/*
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* Determine the number of bytes neccesary for Win95 names
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*/
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int
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winLenFixup(un, unlen)
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const u_char* un;
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int unlen;
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{
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for (un += unlen; unlen > 0; unlen--)
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if (*--un != ' ' && *un != '.')
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break;
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return unlen;
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}
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@ -1,4 +1,4 @@
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/* $Id: msdosfs_lookup.c,v 1.20 1998/02/23 16:44:30 ache Exp $ */
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/* $Id: msdosfs_lookup.c,v 1.21 1998/02/24 14:13:13 ache Exp $ */
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/* $NetBSD: msdosfs_lookup.c,v 1.37 1997/11/17 15:36:54 ws Exp $ */
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/*-
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@ -114,6 +114,7 @@ msdosfs_lookup(ap)
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int flags = cnp->cn_flags;
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int nameiop = cnp->cn_nameiop;
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struct proc *p = cnp->cn_proc;
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int unlen;
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int wincnt = 1;
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int chksum = -1;
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@ -170,6 +171,7 @@ msdosfs_lookup(ap)
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}
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if (pmp->pm_flags & MSDOSFSMNT_SHORTNAME)
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wincnt = 1;
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unlen = winLenFixup(cnp->cn_nameptr, cnp->cn_namelen);
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/*
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* Suppress search for slots unless creating
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@ -255,7 +257,7 @@ msdosfs_lookup(ap)
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continue;
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chksum = winChkName((const u_char *)cnp->cn_nameptr,
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cnp->cn_namelen,
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unlen,
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(struct winentry *)dep,
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chksum,
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pmp->pm_flags & MSDOSFSMNT_U2WTABLE,
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@ -292,7 +294,7 @@ msdosfs_lookup(ap)
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* this lookup.
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*/
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dp->de_fndoffset = diroff;
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dp->de_fndcnt = 0; /* unused anyway */
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dp->de_fndcnt = wincnt;
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goto found;
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}
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@ -1,4 +1,4 @@
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/* $Id: msdosfs_vnops.c,v 1.60 1998/02/23 16:44:36 ache Exp $ */
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/* $Id: msdosfs_vnops.c,v 1.61 1998/02/24 14:13:16 ache Exp $ */
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/* $NetBSD: msdosfs_vnops.c,v 1.68 1998/02/10 14:10:04 mrg Exp $ */
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/*-
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@ -1539,8 +1539,6 @@ msdosfs_readdir(ap)
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long n;
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int blsize;
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long on;
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long lost;
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long count;
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u_long cn;
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u_long fileno;
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u_long dirsperblk;
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@ -1581,13 +1579,10 @@ msdosfs_readdir(ap)
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* entry or the file offset is not a multiple of the size of a
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* directory entry, then we fail the read.
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*/
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count = uio->uio_resid & ~(sizeof(struct direntry) - 1);
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offset = uio->uio_offset;
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if (count < sizeof(struct direntry) ||
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off = offset = uio->uio_offset;
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if (uio->uio_resid < sizeof(struct direntry) ||
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(offset & (sizeof(struct direntry) - 1)))
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return (EINVAL);
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lost = uio->uio_resid - count;
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uio->uio_resid = count;
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if (ap->a_ncookies) {
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ncookies = uio->uio_resid / 16;
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@ -1640,12 +1635,13 @@ msdosfs_readdir(ap)
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dirbuf.d_reclen, uio);
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if (error)
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goto out;
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offset += sizeof(struct direntry);
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off = offset;
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if (cookies) {
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*cookies++ = offset;
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if (--ncookies <= 0)
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goto out;
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}
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offset += sizeof(struct direntry);
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}
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}
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}
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@ -1763,13 +1759,13 @@ msdosfs_readdir(ap)
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goto out;
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}
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if (cookies) {
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*cookies++ = off;
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off = offset + sizeof(struct direntry);
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*cookies++ = offset + sizeof(struct direntry);
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if (--ncookies <= 0) {
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brelse(bp);
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goto out;
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}
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}
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off = offset + sizeof(struct direntry);
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}
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brelse(bp);
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}
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@ -1778,8 +1774,7 @@ out:
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if (ap->a_ncookies)
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*ap->a_ncookies -= ncookies;
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uio->uio_offset = offset;
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uio->uio_resid += lost;
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uio->uio_offset = off;
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/*
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* Set the eofflag (NFS uses it)
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