193 files changed, 80411 insertions, 44563 deletions
diff --git a/ntfsprogs/cluster.c b/ntfsprogs/cluster.c new file mode 100755 index 0000000..d22d8e4 --- a/dev/null +++ b/ntfsprogs/cluster.c @@ -0,0 +1,118 @@ +/** + * cluster - Part of the Linux-NTFS project. + * + * Copyright (c) 2002-2003 Richard Russon + * + * This function will locate the owner of any given sector or cluster range. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program (in the main directory of the Linux-NTFS + * distribution in the file COPYING); if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "config.h" + +#ifdef HAVE_STDIO_H +#include <stdio.h> +#endif +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_STRING_H +#include <string.h> +#endif + +#include "cluster.h" +#include "utils.h" +#include "logging.h" + +/** + * cluster_find + */ +int cluster_find(ntfs_volume *vol, LCN c_begin, LCN c_end, cluster_cb *cb, void *data) +{ + int j; + int result = -1; + struct mft_search_ctx *m_ctx = NULL; + ntfs_attr_search_ctx *a_ctx = NULL; + ATTR_RECORD *rec; + runlist *runs; + + if (!vol || !cb) + return -1; + + m_ctx = mft_get_search_ctx(vol); + m_ctx->flags_search = FEMR_IN_USE | FEMR_BASE_RECORD; + + while (mft_next_record(m_ctx) == 0) { + + if (!(m_ctx->flags_match & FEMR_BASE_RECORD)) + continue; + + ntfs_log_verbose("Inode: %llu\n", (unsigned long long) + m_ctx->inode->mft_no); + + a_ctx = ntfs_attr_get_search_ctx(m_ctx->inode, NULL); + + while ((rec = find_attribute(AT_UNUSED, a_ctx))) { + + if (!rec->non_resident) { + ntfs_log_verbose("0x%02x skipped - attr is resident\n", a_ctx->attr->type); + continue; + } + + runs = ntfs_mapping_pairs_decompress(vol, a_ctx->attr, NULL); + if (!runs) { + ntfs_log_error("Couldn't read the data runs.\n"); + goto done; + } + + ntfs_log_verbose("\t[0x%02X]\n", a_ctx->attr->type); + + ntfs_log_verbose("\t\tVCN\tLCN\tLength\n"); + for (j = 0; runs[j].length > 0; j++) { + LCN a_begin = runs[j].lcn; + LCN a_end = a_begin + runs[j].length - 1; + + if (a_begin < 0) + continue; // sparse, discontiguous, etc + + ntfs_log_verbose("\t\t%lld\t%lld-%lld (%lld)\n", + (long long)runs[j].vcn, + (long long)runs[j].lcn, + (long long)(runs[j].lcn + + runs[j].length - 1), + (long long)runs[j].length); + //dprint list + + if ((a_begin > c_end) || (a_end < c_begin)) + continue; // before or after search range + + if ((*cb) (m_ctx->inode, a_ctx->attr, runs+j, data)) + return 1; + } + } + + ntfs_attr_put_search_ctx(a_ctx); + a_ctx = NULL; + } + + result = 0; +done: + ntfs_attr_put_search_ctx(a_ctx); + mft_put_search_ctx(m_ctx); + + return result; +} + |