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ntfswipe.c: Deduplicated MFT write code in wipe_mft.

edge.strict_endians
Erik Larsson 2012-01-09 12:57:26 +01:00
parent 50774cd274
commit 9fca9caf5c
1 changed files with 22 additions and 52 deletions
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74
ntfsprogs/ntfswipe.c
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@ -724,36 +724,6 @@ static s64 wipe_mft(ntfs_volume *vol, int byte, enum action act)
}
memset(((u8*) rec) + size, byte, vol->mft_record_size - size);
result = ntfs_attr_mst_pwrite(vol->mft_na, vol->mft_record_size * i,
1, vol->mft_record_size, rec);
if (result != 1) {
ntfs_log_error("error attr mst write %lld\n",
(long long)i);
total = -1;
goto free;
}
if ((vol->mft_record_size * (i+1)) <= vol->mftmirr_na->allocated_size)
{
// We have to reduce the update sequence number, or else...
u16 offset;
le16 *usnp;
offset = le16_to_cpu(rec->usa_ofs);
usnp = (le16*) (((u8*) rec) + offset);
*usnp = cpu_to_le16(le16_to_cpu(*usnp) - 1);
result = ntfs_attr_mst_pwrite(vol->mftmirr_na, vol->mft_record_size * i,
1, vol->mft_record_size, rec);
if (result != 1) {
ntfs_log_error("error attr mst write %lld\n",
(long long)i);
total = -1;
goto free;
}
}
total += vol->mft_record_size;
} else {
const u16 usa_offset =
(vol->major_ver == 3) ? 0x0030 : 0x002A;
@ -792,8 +762,27 @@ static s64 wipe_mft(ntfs_volume *vol, int byte, enum action act)
// End marker.
*((le32*) (((u8*) rec) + attrs_offset)) = cpu_to_le32(0xFFFFFFFF);
}
result = ntfs_attr_mst_pwrite(vol->mft_na, vol->mft_record_size * i,
result = ntfs_attr_mst_pwrite(vol->mft_na, vol->mft_record_size * i,
1, vol->mft_record_size, rec);
if (result != 1) {
ntfs_log_error("error attr mst write %lld\n",
(long long)i);
total = -1;
goto free;
}
if ((vol->mft_record_size * (i+1)) <= vol->mftmirr_na->allocated_size)
{
// We have to reduce the update sequence number, or else...
u16 offset;
le16 *usnp;
offset = le16_to_cpu(rec->usa_ofs);
usnp = (le16*) (((u8*) rec) + offset);
*usnp = cpu_to_le16(le16_to_cpu(*usnp) - 1);
result = ntfs_attr_mst_pwrite(vol->mftmirr_na, vol->mft_record_size * i,
1, vol->mft_record_size, rec);
if (result != 1) {
ntfs_log_error("error attr mst write %lld\n",
@ -801,28 +790,9 @@ static s64 wipe_mft(ntfs_volume *vol, int byte, enum action act)
total = -1;
goto free;
}
if ((vol->mft_record_size * (i+1)) <= vol->mftmirr_na->allocated_size)
{
// We have to reduce the update sequence number, or else...
u16 offset;
le16 *usnp;
offset = le16_to_cpu(rec->usa_ofs);
usnp = (le16*) (((u8*) rec) + offset);
*usnp = cpu_to_le16(le16_to_cpu(*usnp) - 1);
result = ntfs_attr_mst_pwrite(vol->mftmirr_na, vol->mft_record_size * i,
1, vol->mft_record_size, rec);
if (result != 1) {
ntfs_log_error("error attr mst write %lld\n",
(long long)i);
total = -1;
goto free;
}
}
total += vol->mft_record_size;
}
total += vol->mft_record_size;
}
ntfs_log_quiet("wipe_mft 0x%02x, %lld bytes\n", byte, (long long)total);