X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fntfs-3g_capture.c;h=a232772ce58dbc7e62c68327ead2b649a731fa84;hp=0417b0b8c5249b3bca3ef09e0d11e7b8850f125d;hb=3de1ec66f778edda19865482d685bc6f4e17faf7;hpb=afda46903074c907e31408d599ae74fc0597b368 diff --git a/src/ntfs-3g_capture.c b/src/ntfs-3g_capture.c index 0417b0b8..a232772c 100644 --- a/src/ntfs-3g_capture.c +++ b/src/ntfs-3g_capture.c @@ -6,7 +6,7 @@ */ /* - * Copyright (C) 2012, 2013, 2014 Eric Biggers + * Copyright (C) 2012, 2013, 2014, 2015 Eric Biggers * * This file is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free @@ -37,14 +37,15 @@ #include "wimlib/alloca.h" #include "wimlib/assert.h" +#include "wimlib/blob_table.h" #include "wimlib/capture.h" #include "wimlib/dentry.h" #include "wimlib/encoding.h" #include "wimlib/endianness.h" #include "wimlib/error.h" -#include "wimlib/lookup_table.h" #include "wimlib/ntfs_3g.h" #include "wimlib/paths.h" +#include "wimlib/reparse.h" #include "wimlib/security.h" static inline ntfschar * @@ -54,14 +55,14 @@ attr_record_name(ATTR_RECORD *ar) } static ntfs_attr * -open_ntfs_attr(ntfs_inode *ni, struct ntfs_location *loc) +open_ntfs_attr(ntfs_inode *ni, const struct ntfs_location *loc) { ntfs_attr *na; na = ntfs_attr_open(ni, - loc->is_reparse_point ? AT_REPARSE_POINT : AT_DATA, - loc->stream_name, - loc->stream_name_nchars); + (ATTR_TYPES)loc->attr_type, + loc->attr_name, + loc->attr_name_nchars); if (!na) { ERROR_WITH_ERRNO("Failed to open attribute of \"%"TS"\" in " "NTFS volume", loc->path); @@ -70,10 +71,10 @@ open_ntfs_attr(ntfs_inode *ni, struct ntfs_location *loc) } int -read_ntfs_file_prefix(const struct wim_lookup_table_entry *lte, u64 size, - consume_data_callback_t cb, void *cb_ctx) +read_ntfs_attribute_prefix(const struct blob_descriptor *blob, u64 size, + consume_data_callback_t cb, void *cb_ctx) { - struct ntfs_location *loc = lte->ntfs_loc; + const struct ntfs_location *loc = blob->ntfs_loc; ntfs_volume *vol = loc->ntfs_vol; ntfs_inode *ni; ntfs_attr *na; @@ -95,7 +96,7 @@ read_ntfs_file_prefix(const struct wim_lookup_table_entry *lte, u64 size, goto out_close_ntfs_inode; } - pos = (loc->is_reparse_point) ? 8 : 0; + pos = (loc->attr_type == AT_REPARSE_POINT) ? REPARSE_DATA_OFFSET : 0; bytes_remaining = size; while (bytes_remaining) { s64 to_read = min(bytes_remaining, sizeof(buf)); @@ -150,24 +151,38 @@ out: } -/* Load the streams from a file or reparse point in the NTFS volume */ static int -capture_ntfs_streams(struct wim_inode *inode, - ntfs_inode *ni, - char *path, - size_t path_len, - struct list_head *unhashed_streams, - ntfs_volume *vol, - ATTR_TYPES type) +attr_type_to_wimlib_stream_type(ATTR_TYPES type) +{ + switch (type) { + case AT_DATA: + return STREAM_TYPE_DATA; + case AT_REPARSE_POINT: + return STREAM_TYPE_REPARSE_POINT; + default: + wimlib_assert(0); + return STREAM_TYPE_UNKNOWN; + } +} + +/* Load attributes of the specified type from a file in the NTFS volume */ +static int +load_ntfs_attrs_with_type(struct wim_inode *inode, + ntfs_inode *ni, + char *path, + size_t path_len, + struct list_head *unhashed_blobs, + ntfs_volume *vol, + ATTR_TYPES type) { ntfs_attr_search_ctx *actx; struct ntfs_location *ntfs_loc; int ret; - struct wim_lookup_table_entry *lte; + struct blob_descriptor *blob; - DEBUG("Capturing NTFS data streams from `%s'", path); + DEBUG("Loading NTFS attributes from \"%s\"", path); - /* Get context to search the streams of the NTFS file. */ + /* Get context to search the attributes of the NTFS file. */ actx = ntfs_attr_get_search_ctx(ni, NULL); if (!actx) { ERROR_WITH_ERRNO("Cannot get NTFS attribute search " @@ -175,17 +190,18 @@ capture_ntfs_streams(struct wim_inode *inode, return WIMLIB_ERR_NTFS_3G; } - /* Capture each data stream or reparse data stream. */ + /* Save each attribute */ while (!ntfs_attr_lookup(type, NULL, 0, CASE_SENSITIVE, 0, NULL, 0, actx)) { u64 data_size = ntfs_get_attribute_value_length(actx->attr); - u64 name_length = actx->attr->name_length; - u32 stream_id; + size_t name_nchars = actx->attr->name_length; + struct wim_inode_stream *strm; + const utf16lechar *stream_name = NO_STREAM_NAME; if (data_size == 0) { - /* Empty stream. No lookup table entry is needed. */ - lte = NULL; + /* Empty attribute. No blob is needed. */ + blob = NULL; ntfs_loc = NULL; } else { ntfs_loc = CALLOC(1, sizeof(*ntfs_loc)); @@ -194,90 +210,58 @@ capture_ntfs_streams(struct wim_inode *inode, goto out_put_actx; } ntfs_loc->ntfs_vol = vol; + ntfs_loc->attr_type = type; ntfs_loc->path = memdup(path, path_len + 1); if (!ntfs_loc->path) { ret = WIMLIB_ERR_NOMEM; goto out_free_ntfs_loc; } - if (name_length) { - ntfs_loc->stream_name = memdup(attr_record_name(actx->attr), - name_length * 2); - if (!ntfs_loc->stream_name) { + if (name_nchars) { + ntfs_loc->attr_name = + utf16le_dupz(attr_record_name(actx->attr), + name_nchars * sizeof(ntfschar)); + if (!ntfs_loc->attr_name) { ret = WIMLIB_ERR_NOMEM; goto out_free_ntfs_loc; } - ntfs_loc->stream_name_nchars = name_length; + ntfs_loc->attr_name_nchars = name_nchars; + stream_name = ntfs_loc->attr_name; } - lte = new_lookup_table_entry(); - if (!lte) { + blob = new_blob_descriptor(); + if (!blob) { ret = WIMLIB_ERR_NOMEM; goto out_free_ntfs_loc; } - lte->resource_location = RESOURCE_IN_NTFS_VOLUME; - lte->ntfs_loc = ntfs_loc; + blob->blob_location = BLOB_IN_NTFS_VOLUME; + blob->ntfs_loc = ntfs_loc; + blob->size = data_size; ntfs_loc = NULL; if (type == AT_REPARSE_POINT) { - if (data_size < 8) { - ERROR("Invalid reparse data on \"%s\" " - "(only %u bytes)!", path, (unsigned)data_size); + if (data_size < REPARSE_DATA_OFFSET) { + ERROR("Reparse data of \"%s\" " + "is invalid (only %u bytes)!", + path, (unsigned)data_size); ret = WIMLIB_ERR_NTFS_3G; - goto out_free_lte; + goto out_free_blob; } - lte->ntfs_loc->is_reparse_point = true; - lte->size = data_size - 8; - ret = read_reparse_tag(ni, lte->ntfs_loc, + blob->size -= REPARSE_DATA_OFFSET; + ret = read_reparse_tag(ni, blob->ntfs_loc, &inode->i_reparse_tag); if (ret) - goto out_free_lte; - } else { - lte->ntfs_loc->is_reparse_point = false; - lte->size = data_size; + goto out_free_blob; } } - if (name_length == 0) { - /* Unnamed data stream. Put the reference to it in the - * dentry's inode. */ - if (inode->i_lte) { - if (lte) { - if (!(inode->i_attributes & - FILE_ATTRIBUTE_REPARSE_POINT)) - { - WARNING("Found two un-named " - "data streams for \"%s\" " - "(sizes = %"PRIu64", " - "%"PRIu64")", - path, - inode->i_lte->size, - lte->size); - } - free_lookup_table_entry(lte); - continue; - } - } else { - stream_id = 0; - inode->i_lte = lte; - } - } else { - /* Named data stream. Put the reference to it in the - * alternate data stream entries */ - struct wim_ads_entry *new_ads_entry; - - new_ads_entry = inode_add_ads_utf16le(inode, - attr_record_name(actx->attr), - name_length * 2); - if (!new_ads_entry) { - ret = WIMLIB_ERR_NOMEM; - goto out_free_lte; - } - wimlib_assert(new_ads_entry->stream_name_nbytes == name_length * 2); - stream_id = new_ads_entry->stream_id; - new_ads_entry->lte = lte; - } - if (lte) { - add_unhashed_stream(lte, inode, - stream_id, unhashed_streams); + + strm = inode_add_stream(inode, + attr_type_to_wimlib_stream_type(type), + stream_name, + blob); + if (!strm) { + ret = WIMLIB_ERR_NOMEM; + goto out_free_blob; } + prepare_unhashed_blob(blob, inode, strm->stream_id, unhashed_blobs); } if (errno == ENOENT) { ret = 0; @@ -286,20 +270,20 @@ capture_ntfs_streams(struct wim_inode *inode, ret = WIMLIB_ERR_NTFS_3G; } goto out_put_actx; -out_free_lte: - free_lookup_table_entry(lte); +out_free_blob: + free_blob_descriptor(blob); out_free_ntfs_loc: if (ntfs_loc) { FREE(ntfs_loc->path); - FREE(ntfs_loc->stream_name); + FREE(ntfs_loc->attr_name); FREE(ntfs_loc); } out_put_actx: ntfs_attr_put_search_ctx(actx); if (ret == 0) - DEBUG("Successfully captured NTFS streams from \"%s\"", path); + DEBUG("Successfully loaded NTFS attributes from \"%s\"", path); else - ERROR("Failed to capture NTFS streams from \"%s\"", path); + ERROR("Failed to load NTFS attributes from \"%s\"", path); return ret; } @@ -513,10 +497,7 @@ out: return ret; } -/* Recursively build a WIM dentry tree corresponding to an NTFS volume. - * At the same time, update the WIM lookup table with lookup table entries for - * the NTFS streams, and build an array of security descriptors. - */ +/* Recursive scan routine for NTFS volumes */ static int build_dentry_tree_ntfs_recursive(struct wim_dentry **root_ret, ntfs_inode *ni, @@ -545,12 +526,11 @@ build_dentry_tree_ntfs_recursive(struct wim_dentry **root_ret, goto out; } - if ((attributes & (FILE_ATTRIBUTE_DIRECTORY | - FILE_ATTRIBUTE_ENCRYPTED)) == FILE_ATTRIBUTE_ENCRYPTED) - { + if (attributes & FILE_ATTRIBUTE_ENCRYPTED) { if (params->add_flags & WIMLIB_ADD_FLAG_NO_UNSUPPORTED_EXCLUDE) { - ERROR("Can't archive unsupported encrypted file \"%s\"", path); + ERROR("Can't archive \"%s\" because NTFS-3g capture mode " + "does not support encrypted files and directories", path); ret = WIMLIB_ERR_UNSUPPORTED_FILE; goto out; } @@ -580,36 +560,28 @@ build_dentry_tree_ntfs_recursive(struct wim_dentry **root_ret, inode->i_last_write_time = le64_to_cpu(ni->last_data_change_time); inode->i_last_access_time = le64_to_cpu(ni->last_access_time); inode->i_attributes = attributes; - inode->i_resolved = 1; - - /* Capture streams. */ - if (attributes & FILE_ATTR_REPARSE_POINT) { - /* Capture reparse data stream. */ - ret = capture_ntfs_streams(inode, ni, path, path_len, - params->unhashed_streams, - vol, AT_REPARSE_POINT); + if (attributes & FILE_ATTRIBUTE_REPARSE_POINT) { + /* Load the reparse point stream. */ + ret = load_ntfs_attrs_with_type(inode, ni, path, path_len, + params->unhashed_blobs, + vol, AT_REPARSE_POINT); if (ret) goto out; } - /* Capture data streams. - * - * Directories should not have an unnamed data stream, but they may have - * named data streams. - * - * Reparse points may have an unnamed data stream (which will be ignored - * in favor of the reparse data stream), and they also may have named - * data streams. + /* Load the data streams. * - * Regular files can have an unnamed data stream as well as named data + * Note: directories should not have an unnamed data stream, but they + * may have named data streams. Nondirectories (including reparse + * points) can have an unnamed data stream as well as named data * streams. */ - ret = capture_ntfs_streams(inode, ni, path, path_len, - params->unhashed_streams, vol, AT_DATA); + ret = load_ntfs_attrs_with_type(inode, ni, path, path_len, + params->unhashed_blobs, vol, AT_DATA); if (ret) goto out; - if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) { + if (inode_is_directory(inode)) { /* Recurse to directory children */ s64 pos = 0; @@ -621,7 +593,7 @@ build_dentry_tree_ntfs_recursive(struct wim_dentry **root_ret, .dos_name_map = &dos_name_map, .vol = vol, .params = params, - .ret = 0, + .ret = 0, }; ret = ntfs_readdir(ni, &pos, &ctx, wim_ntfs_capture_filldir); if (ret) { @@ -702,7 +674,7 @@ out_progress: ret = do_capture_progress(params, WIMLIB_SCAN_DENTRY_OK, inode); out: if (unlikely(ret)) { - free_dentry_tree(root, params->lookup_table); + free_dentry_tree(root, params->blob_table); root = NULL; ret = report_capture_error(params, ret, path); }