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fixed compression when a runlist relocation is needed

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This commit is contained in:
Jean-Pierre André 2010-06-14 14:33:34 +02:00
parent 4d73c7c4f1
commit 207318b504
1 changed files with 20 additions and 3 deletions
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23
libntfs-3g/attrib.c
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@ -1528,18 +1528,35 @@ static int borrow_from_hole(ntfs_attr *na, runlist_element **prl,
}
} else {
runlist_element *orl = na->rl;
s64 olcn = (*prl)->lcn;
/*
* Map the full runlist (needed to compute the
* compressed size), unless the runlist has not
* yet been created (data just made non-resident)
*/
irl = *prl - na->rl;
if (!NAttrBeingNonResident(na)
&& ntfs_attr_map_whole_runlist(na)) {
*prl = (runlist_element*)NULL;
} else {
if (na->rl != orl) {
/* hope this cannot happen */
ntfs_log_error("Unexpected runlist relocation\n");
/*
* Mapping the runlist may cause its relocation,
* and relocation may be at the same place with
* relocated contents.
* Have to find the current run again when this
* happens.
*/
if ((na->rl != orl) || ((*prl)->lcn != olcn)) {
zrl = &na->rl[irl];
while (zrl->length && (zrl->lcn != olcn))
zrl++;
*prl = zrl;
}
if (!(*prl)->length) {
ntfs_log_error("Mapped run not found,"
" inode %lld lcn 0x%llx\n",
(long long)na->ni->mft_no,
(long long)olcn);
*prl = (runlist_element*)NULL;
} else {
*prl = ntfs_rl_extend(na,*prl,2);