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Fix calculation of descriptor tag checksums. According to ECMA-167, Part 4,

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7.2.3, bytes 0-3 and 5-15 are used to calculate the checksum of a descriptor
tag.

PR:		kern/90521
Submitted by:	Björn König <bkoenig@cs.tu-berlin.de>
Reviewed by:	scottl
Approved by:	emax (mentor)
This commit is contained in:
Markus Brueffer 2007-12-11 19:49:40 +00:00
parent df1cc4e53a
commit a8a27cb0f9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=174538
1 changed files with 1 additions and 1 deletions
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sys/fs/udf/udf_vfsops.c
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@ -290,7 +290,7 @@ udf_checktag(struct desc_tag *tag, uint16_t id)
if (le16toh(tag->id) != id)
return (EINVAL);
for (i = 0; i < 15; i++)
for (i = 0; i < 16; i++)
cksum = cksum + itag[i];
cksum = cksum - itag[4];