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For bug-compatibility with Windows, the last VAT sector must be a multiple of 

16/32 from the start of the track.  To allow for scratches, write out at least
a 32 pieces.
This commit is contained in:
reinoud 2022-03-08 18:30:43 +00:00
parent 5ba19a4f03
commit 66e688eb66
1 changed files with 15 additions and 5 deletions
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20
sys/fs/udf/udf_subr.c
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@ -1,4 +1,4 @@
/* $NetBSD: udf_subr.c,v 1.166 2022/02/06 20:20:19 andvar Exp $ */
/* $NetBSD: udf_subr.c,v 1.167 2022/03/08 18:30:43 reinoud Exp $ */
/*
* Copyright (c) 2006, 2008 Reinoud Zandijk
@ -29,7 +29,7 @@
#include <sys/cdefs.h>
#ifndef lint
__KERNEL_RCSID(0, "$NetBSD: udf_subr.c,v 1.166 2022/02/06 20:20:19 andvar Exp $");
__KERNEL_RCSID(0, "$NetBSD: udf_subr.c,v 1.167 2022/03/08 18:30:43 reinoud Exp $");
#endif /* not lint */
@ -3797,10 +3797,11 @@ udf_close_logvol(struct udf_mount *ump, int mntflags)
{
struct vnode *devvp = ump->devvp;
struct mmc_op mmc_op;
uint32_t phys;
int logvol_integrity;
int error = 0, error1 = 0, error2 = 0;
int tracknr;
int nvats, n, nok;
int nvats, n, relblk, wrtrack_skew, nok;
/* already/still closed? */
logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type);
@ -3821,8 +3822,17 @@ udf_close_logvol(struct udf_mount *ump, int mntflags)
DPRINTF(VOLUMES, ("writeout vat_node\n"));
udf_writeout_vat(ump);
/* at least two DVD packets and 3 CD-R packets */
nvats = 32;
/*
* For bug-compatibility with Windows, the last VAT sector
* must be a multiple of 16/32 from the start of the track.
* To allow for scratches, write out at least a 32 pieces.
*/
phys = ump->data_track.track_start;
wrtrack_skew = phys % 32;
phys = ump->data_track.next_writable;
relblk = phys % 32;
nvats = 32 + 32 - (relblk - wrtrack_skew);
#if notyet
/*