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ntfs_mft_records_read, ntfs_file_record_read: log all errors

master
szaka 2007-07-20 22:42:19 +00:00
parent 58e31d44eb
commit 8636d42841
1 changed files with 21 additions and 12 deletions
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33
libntfs-3g/mft.c
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@ -81,9 +81,12 @@ int ntfs_mft_records_read(const ntfs_volume *vol, const MFT_REF mref,
s64 br;
VCN m;
ntfs_log_trace("Entering for inode 0x%llx.\n", MREF(mref));
ntfs_log_trace("Entering for inode %lld\n", MREF(mref));
if (!vol || !vol->mft_na || !b || count < 0) {
errno = EINVAL;
ntfs_log_perror("%s: b=%p count=%lld mft=%lld", __FUNCTION__,
b, count, MREF(mref));
return -1;
}
m = MREF(mref);
@ -246,6 +249,7 @@ int ntfs_file_record_read(const ntfs_volume *vol, const MFT_REF mref,
if (!vol || !mrec) {
errno = EINVAL;
ntfs_log_perror("%s: mrec=%p", __FUNCTION__, mrec);
return -1;
}
m = *mrec;
@ -256,23 +260,28 @@ int ntfs_file_record_read(const ntfs_volume *vol, const MFT_REF mref,
}
if (ntfs_mft_record_read(vol, mref, m)) {
err = errno;
goto read_failed;
ntfs_log_perror("ntfs_mft_record_read failed");
goto err_out;
}
err = EIO;
if (!ntfs_is_file_record(m->magic)) {
ntfs_log_perror("Record %llu has no FILE magic", MREF(mref));
goto err_out;
}
if (MSEQNO(mref) && MSEQNO(mref) != le16_to_cpu(m->sequence_number)) {
ntfs_log_perror("Record %llu has wrong SeqNo", MREF(mref));
goto err_out;
}
if (!ntfs_is_file_record(m->magic))
goto file_corrupt;
if (MSEQNO(mref) && MSEQNO(mref) != le16_to_cpu(m->sequence_number))
goto file_corrupt;
a = (ATTR_RECORD*)((char*)m + le16_to_cpu(m->attrs_offset));
if (p2n(a) < p2n(m) || (char*)a > (char*)m + vol->mft_record_size)
goto file_corrupt;
if (p2n(a) < p2n(m) || (char*)a > (char*)m + vol->mft_record_size) {
ntfs_log_perror("Record %llu is corrupt", MREF(mref));
goto err_out;
}
*mrec = m;
if (attr)
*attr = a;
return 0;
file_corrupt:
ntfs_log_debug("ntfs_file_record_read(): file is corrupt.\n");
err = EIO;
read_failed:
err_out:
if (m != *mrec)
free(m);
errno = err;