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Added code to determine INDX record size from $INDEX_ROOT 

(Logical change 1.448)
edge.strict_endians
(none)!yura 2004-07-08 20:19:52 +00:00
parent 4ea006cda2
commit 631668c253
1 changed files with 68 additions and 16 deletions
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84
ntfsprogs/ntfswipe.c
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@ -763,19 +763,19 @@ free:
/**
* wipe_index_allocation - Wipe $INDEX_ALLOCATION attribute
* @vol: An ntfs volume obtained from ntfs_mount
* @byte: Overwrite with this value
* @act: Wipe, test or info
* @naa: Opened ntfs $INDEX_ALLOCATION attribute
* @nab: Opened ntfs $BIMTAP attribute
* @vol: An ntfs volume obtained from ntfs_mount
* @byte: Overwrite with this value
* @act: Wipe, test or info
* @naa: Opened ntfs $INDEX_ALLOCATION attribute
* @nab: Opened ntfs $BIMTAP attribute
* @indx_record_size: Size of INDX record
*
* Return: >0 Success, the clusters were wiped
* 0 Nothing to wipe
* -1 Error, something went wrong
*/
static s64 wipe_index_allocation (ntfs_volume *vol, int byte, enum action act,
ntfs_attr *naa, ntfs_attr *nab) {
const u32 indx_record_size = 4096;
ntfs_attr *naa, ntfs_attr *nab, u32 indx_record_size) {
s64 total = 0;
s64 wiped = 0;
s64 offset = 0;
@ -832,7 +832,8 @@ static s64 wipe_index_allocation (ntfs_volume *vol, int byte, enum action act,
if ((le32_to_cpu(indx->index.allocated_size) + 0x18) !=
indx_record_size) {
Vprintf ("Internal error\n");
Eprintf ("INDX record should be 4096 bytes");
Eprintf ("INDX record should be %u bytes",
indx_record_size);
total = -1;
goto free_buf;
}
@ -877,6 +878,31 @@ free_bitmap:
return total;
}
/**
* get_indx_record_size - determine size of INDX record from $INDEX_ROOT
* @nar: Opened ntfs $INDEX_ROOT attribute
*
* Return: >0 Success, return INDX record size
* 0 Error, something went wrong
*/
static u32 get_indx_record_size (ntfs_attr *nar)
{
u32 indx_record_size;
if (ntfs_attr_pread (nar, 8, 4, &indx_record_size) != 4) {
Vprintf ("Couldn't determine size of INDX record\n");
Eprintf ("ntfs_attr_pread failed");
return 0;
}
indx_record_size = le32_to_cpu (indx_record_size);
if (!indx_record_size) {
Vprintf ("Internal error\n");
Eprintf ("INDX record should be 0");
}
return indx_record_size;
}
/**
* wipe_directory - Wipe the directory indexes
* @vol: An ntfs volume obtained from ntfs_mount
@ -897,6 +923,7 @@ static s64 wipe_directory (ntfs_volume *vol, int byte, enum action act)
ntfs_inode *ni;
ntfs_attr *naa;
ntfs_attr *nab;
ntfs_attr *nar;
if (!vol || (byte < 0))
return -1;
@ -933,29 +960,52 @@ static s64 wipe_directory (ntfs_volume *vol, int byte, enum action act)
Vprintf ("Resident $INDEX_ALLOCATION\n");
Eprintf ("damaged fs: Resident $INDEX_ALLOCATION "
"(inode %lld)\n", inode_num);
goto close_attr_a;
goto close_attr_allocation;
}
if (ntfs_attr_map_whole_runlist(naa)) {
Vprintf ("Internal error\n");
Eprintf ("Can't map runlist for $INDEX_ALLOCATION "
"(inode %lld)\n", inode_num);
goto close_attr_a;
goto close_attr_allocation;
}
nab = ntfs_attr_open (ni, AT_BITMAP, I30, 4);
if (!nab) {
Vprintf ("Couldn't open $BITMAP\n");
Eprintf ("damaged fs: $INDEX_ALLOCATION is present, "
"but we can't open $BITMAP with same "
"name (inode %lld)\n", inode_num);
goto close_attr_a;
goto close_attr_allocation;
}
s64 wiped = wipe_index_allocation (vol, byte, act, naa, nab);
nar = ntfs_attr_open (ni, AT_INDEX_ROOT, I30, 4);
if (!nar) {
Vprintf ("Couldn't open $INDEX_ROOT\n");
Eprintf ("damaged fs: $INDEX_ALLOCATION is present, but "
"we can't open $INDEX_ROOT with same name"
" (inode %lld)\n", inode_num);
goto close_attr_bitmap;
}
if (NAttrNonResident(nar)) {
Vprintf ("Not resident $INDEX_ROOT\n");
Eprintf ("damaged fs: Not resident $INDEX_ROOT "
"(inode %lld)\n", inode_num);
goto close_attr_root;
}
u32 indx_record_size = get_indx_record_size (nar);
if (!indx_record_size) {
Eprintf (" (inode %lld)\n", inode_num);
goto close_attr_root;
}
s64 wiped = wipe_index_allocation (vol, byte, act,
naa, nab, indx_record_size);
if (wiped == -1) {
Eprintf (" (inode %lld)\n", inode_num);
goto close_attr_b;
goto close_attr_root;
}
if (wiped) {
@ -963,9 +1013,11 @@ static s64 wipe_directory (ntfs_volume *vol, int byte, enum action act)
total += wiped;
} else
Vprintf ("Nothing to wipe\n");
close_attr_b:
close_attr_root:
ntfs_attr_close (nar);
close_attr_bitmap:
ntfs_attr_close (nab);
close_attr_a:
close_attr_allocation:
ntfs_attr_close (naa);
close_inode:
ntfs_inode_close (ni);