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ntfs_delete: Add sanity check for case when user tries to delete inode with several references

edge.strict_endians
Yura Pakhuchiy 2007-09-22 23:19:09 +03:00
parent d788fc6591
commit 72ae9ade7e
1 changed files with 14 additions and 0 deletions
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14
libntfs/dir.c
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@ -1453,6 +1453,12 @@ int ntfs_delete(ntfs_inode **pni, ntfs_inode *dir_ni, ntfschar *name,
errno = EINVAL;
goto err_out;
}
if (ni->nr_references > 1 && le16_to_cpu(ni->mrec->link_count) == 1) {
ntfs_log_error("Trying to deleting inode with left "
"references.\n");
errno = EINVAL;
goto err_out;
}
/*
* Search for FILE_NAME attribute with such name. If it's in POSIX or
* WIN32_AND_DOS namespace, then simply remove it from index and inode.
@ -1546,6 +1552,14 @@ search:
}
ntfs_attr_close(na);
}
/* One more sanity check. */
if (ni->nr_references > 1 && looking_for_dos_name &&
le16_to_cpu(ni->mrec->link_count) == 2) {
ntfs_log_error("Trying to deleting inode with left "
"references.\n");
errno = EINVAL;
goto err_out;
}
ntfs_log_trace("Found!\n");
/* Search for such FILE_NAME in index. */
ictx = ntfs_index_ctx_get(dir_ni, NTFS_INDEX_I30, 4);