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udf: create common function for tag checksumming

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Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Acked-by: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Marcin Slusarz
2008-02-08 04:20:39 -08:00
committed by Linus Torvalds
parent 4b11111aba
commit 3f2587bb22
5 changed files with 22 additions and 56 deletions
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9
fs/udf/namei.c
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@@ -47,8 +47,6 @@ int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi,
{
uint16_t crclen = fibh->eoffset - fibh->soffset - sizeof(tag);
uint16_t crc;
uint8_t checksum = 0;
int i;
int offset;
uint16_t liu = le16_to_cpu(cfi->lengthOfImpUse);
uint8_t lfi = cfi->lengthFileIdent;
@@ -122,13 +120,8 @@ int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi,
cfi->descTag.descCRC = cpu_to_le16(crc);
cfi->descTag.descCRCLength = cpu_to_le16(crclen);
cfi->descTag.tagChecksum = udf_tag_checksum(&cfi->descTag);
for (i = 0; i < 16; i++) {
if (i != 4)
checksum += ((uint8_t *)&cfi->descTag)[i];
}
cfi->descTag.tagChecksum = checksum;
if (adinicb || (sizeof(struct fileIdentDesc) <= -fibh->soffset)) {
memcpy((uint8_t *)sfi, (uint8_t *)cfi,
sizeof(struct fileIdentDesc));