X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fntfs-3g_capture.c;h=75690917aa6a4dc36fb3c133dd1472c06d69cf46;hp=5c5b97af81f4a46fd68cb3e822456da73561f832;hb=1d898377d67701075d0b9e6d7f8541aad21599a4;hpb=2fdc3bd720f5bc49680dc2284ea42a537d1acc07 diff --git a/src/ntfs-3g_capture.c b/src/ntfs-3g_capture.c index 5c5b97af..75690917 100644 --- a/src/ntfs-3g_capture.c +++ b/src/ntfs-3g_capture.c @@ -6,22 +6,20 @@ */ /* - * Copyright (C) 2012, 2013, 2014 Eric Biggers + * Copyright (C) 2012, 2013, 2014, 2015 Eric Biggers * - * This file is part of wimlib, a library for working with WIM files. + * 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 + * Software Foundation; either version 3 of the License, or (at your option) any + * later version. * - * wimlib 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 3 of the License, or (at your option) - * any later version. - * - * wimlib 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 + * This file 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 Lesser General Public License for more * details. * - * You should have received a copy of the GNU General Public License - * along with wimlib; if not, see http://www.gnu.org/licenses/. + * You should have received a copy of the GNU Lesser General Public License + * along with this file; if not, see http://www.gnu.org/licenses/. */ #ifdef HAVE_CONFIG_H @@ -31,54 +29,53 @@ #ifdef WITH_NTFS_3G #include -#include - -#ifdef HAVE_ALLOCA_H -# include -#endif #include #include #include #include +#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 * -attr_record_name(ATTR_RECORD *ar) +static inline const ntfschar * +attr_record_name(const ATTR_RECORD *record) { - return (ntfschar*)((u8*)ar + le16_to_cpu(ar->name_offset)); + return (const ntfschar *) + ((const u8 *)record + le16_to_cpu(record->name_offset)); } 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); + ERROR_WITH_ERRNO("Failed to open attribute of NTFS inode %"PRIu64, + loc->mft_no); } return na; } 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; @@ -87,9 +84,10 @@ read_ntfs_file_prefix(const struct wim_lookup_table_entry *lte, u64 size, int ret; u8 buf[BUFFER_SIZE]; - ni = ntfs_pathname_to_inode(vol, NULL, loc->path); + ni = ntfs_inode_open(vol, loc->mft_no); if (!ni) { - ERROR_WITH_ERRNO("Can't find NTFS inode for \"%"TS"\"", loc->path); + ERROR_WITH_ERRNO("Failed to open NTFS inode %"PRIu64, + loc->mft_no); ret = WIMLIB_ERR_NTFS_3G; goto out; } @@ -100,12 +98,13 @@ 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)); if (ntfs_attr_pread(na, pos, to_read, buf) != to_read) { - ERROR_WITH_ERRNO("Error reading \"%"TS"\"", loc->path); + ERROR_WITH_ERRNO("Error reading data from NTFS inode " + "%"PRIu64, loc->mft_no); ret = WIMLIB_ERR_NTFS_3G; goto out_close_ntfs_attr; } @@ -155,156 +154,154 @@ 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; + } +} + +/* Save information about an NTFS attribute (stream) to a WIM inode. */ +static int +scan_ntfs_attr(struct wim_inode *inode, + ntfs_inode *ni, + const char *path, + size_t path_len, + struct list_head *unhashed_blobs, + ntfs_volume *vol, + ATTR_TYPES type, + const ATTR_RECORD *record) +{ + const u64 data_size = ntfs_get_attribute_value_length(record); + const size_t name_nchars = record->name_length; + struct blob_descriptor *blob = NULL; + utf16lechar *stream_name = NULL; + struct wim_inode_stream *strm; + int ret; + + if (unlikely(name_nchars)) { + /* Named stream */ + stream_name = utf16le_dupz(attr_record_name(record), + name_nchars * sizeof(ntfschar)); + if (!stream_name) { + ret = WIMLIB_ERR_NOMEM; + goto out_cleanup; + } + } + + /* If the stream is non-empty, set up a blob descriptor for it. */ + if (data_size != 0) { + blob = new_blob_descriptor(); + if (unlikely(!blob)) { + ret = WIMLIB_ERR_NOMEM; + goto out_cleanup; + } + + blob->ntfs_loc = CALLOC(1, sizeof(struct ntfs_location)); + if (unlikely(!blob->ntfs_loc)) { + ret = WIMLIB_ERR_NOMEM; + goto out_cleanup; + } + + blob->blob_location = BLOB_IN_NTFS_VOLUME; + blob->size = data_size; + blob->ntfs_loc->ntfs_vol = vol; + blob->ntfs_loc->attr_type = type; + blob->ntfs_loc->mft_no = ni->mft_no; + + if (unlikely(name_nchars)) { + blob->ntfs_loc->attr_name = utf16le_dup(stream_name); + if (!blob->ntfs_loc->attr_name) { + ret = WIMLIB_ERR_NOMEM; + goto out_cleanup; + } + blob->ntfs_loc->attr_name_nchars = name_nchars; + } + + if (unlikely(type == AT_REPARSE_POINT)) { + if (blob->size < REPARSE_DATA_OFFSET) { + ERROR("Reparse data of \"%s\" " + "is invalid (only %"PRIu64" bytes)!", + path, data_size); + ret = WIMLIB_ERR_INVALID_REPARSE_DATA; + goto out_cleanup; + } + blob->size -= REPARSE_DATA_OFFSET; + ret = read_reparse_tag(ni, blob->ntfs_loc, + &inode->i_reparse_tag); + if (ret) + goto out_cleanup; + } + } + + strm = inode_add_stream(inode, + attr_type_to_wimlib_stream_type(type), + stream_name ? stream_name : NO_STREAM_NAME, + blob); + if (unlikely(!strm)) { + ret = WIMLIB_ERR_NOMEM; + goto out_cleanup; + } + prepare_unhashed_blob(blob, inode, strm->stream_id, unhashed_blobs); + blob = NULL; + ret = 0; +out_cleanup: + free_blob_descriptor(blob); + FREE(stream_name); + return ret; +} + +/* Scan attributes of the specified type from a file in the NTFS volume */ +static int +scan_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; - DEBUG("Capturing NTFS data streams from `%s'", path); + DEBUG("Scanning NTFS attributes from \"%s\"", path); - /* Get context to search the streams of the NTFS file. */ actx = ntfs_attr_get_search_ctx(ni, NULL); if (!actx) { - ERROR_WITH_ERRNO("Cannot get NTFS attribute search " + ERROR_WITH_ERRNO("Failed to get NTFS attribute search " "context for \"%s\"", path); return WIMLIB_ERR_NTFS_3G; } - /* Capture each data stream or reparse data stream. */ 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; - - if (data_size == 0) { - /* Empty stream. No lookup table entry is needed. */ - lte = NULL; - ntfs_loc = NULL; - } else { - ntfs_loc = CALLOC(1, sizeof(*ntfs_loc)); - if (!ntfs_loc) { - ret = WIMLIB_ERR_NOMEM; - goto out_put_actx; - } - ntfs_loc->ntfs_vol = vol; - 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) { - ret = WIMLIB_ERR_NOMEM; - goto out_free_ntfs_loc; - } - ntfs_loc->stream_name_nchars = name_length; - } - - lte = new_lookup_table_entry(); - if (!lte) { - ret = WIMLIB_ERR_NOMEM; - goto out_free_ntfs_loc; - } - lte->resource_location = RESOURCE_IN_NTFS_VOLUME; - lte->ntfs_loc = ntfs_loc; - 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); - ret = WIMLIB_ERR_NTFS_3G; - goto out_free_lte; - } - lte->ntfs_loc->is_reparse_point = true; - lte->size = data_size - 8; - ret = read_reparse_tag(ni, lte->ntfs_loc, - &inode->i_reparse_tag); - if (ret) - goto out_free_lte; - } else { - lte->ntfs_loc->is_reparse_point = false; - lte->size = data_size; - } - } - 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); - } + ret = scan_ntfs_attr(inode, + ni, + path, + path_len, + unhashed_blobs, + vol, + type, + actx->attr); + if (ret) + goto out_put_actx; } - if (errno == ENOENT) { - ret = 0; - } else { + if (errno != ENOENT) { ERROR_WITH_ERRNO("Error listing NTFS attributes of \"%s\"", path); ret = WIMLIB_ERR_NTFS_3G; + goto out_put_actx; } - goto out_put_actx; -out_free_lte: - free_lookup_table_entry(lte); -out_free_ntfs_loc: - if (ntfs_loc) { - FREE(ntfs_loc->path); - FREE(ntfs_loc->stream_name); - FREE(ntfs_loc); - } + ret = 0; out_put_actx: ntfs_attr_put_search_ctx(actx); - if (ret == 0) - DEBUG("Successfully captured NTFS streams from \"%s\"", path); - else - ERROR("Failed to capture NTFS streams from \"%s\"", path); return ret; } @@ -341,7 +338,7 @@ insert_dos_name(struct dos_name_map *map, const ntfschar *dos_name, DEBUG("DOS name_len = %zu", name_nbytes); new_node = MALLOC(sizeof(struct dos_name_node)); if (!new_node) - return -1; + return WIMLIB_ERR_NOMEM; /* DOS names are supposed to be 12 characters max (that's 24 bytes, * assuming 2-byte ntfs characters) */ @@ -363,7 +360,7 @@ insert_dos_name(struct dos_name_map *map, const ntfschar *dos_name, ERROR("NTFS inode %"PRIu64" has multiple DOS names", le64_to_cpu(ntfs_ino)); FREE(new_node); - return -1; + return WIMLIB_ERR_NOMEM; } DEBUG("Inserted DOS name for inode %"PRIu64, le64_to_cpu(ntfs_ino)); return 0; @@ -394,7 +391,7 @@ set_dentry_dos_name(struct wim_dentry *dentry, const struct dos_name_map *map) if (dentry->is_win32_name) { node = lookup_dos_name(map, dentry->d_inode->i_ino); if (node) { - dentry->short_name = utf16le_dupz((const utf16lechar *)node->dos_name, + dentry->short_name = utf16le_dupz(node->dos_name, node->name_nbytes); if (!dentry->short_name) return WIMLIB_ERR_NOMEM; @@ -431,7 +428,8 @@ struct readdir_ctx { size_t path_len; struct dos_name_map *dos_name_map; ntfs_volume *vol; - struct add_image_params *params; + struct capture_params *params; + int ret; }; static int @@ -441,7 +439,7 @@ build_dentry_tree_ntfs_recursive(struct wim_dentry **root_p, size_t path_len, int name_type, ntfs_volume *ntfs_vol, - struct add_image_params *params); + struct capture_params *params); static int wim_ntfs_capture_filldir(void *dirent, const ntfschar *name, @@ -513,13 +511,11 @@ out_free_mbs_name: FREE(mbs_name); out: ctx->path[ctx->path_len] = '\0'; + ctx->ret = ret; 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, @@ -527,19 +523,18 @@ build_dentry_tree_ntfs_recursive(struct wim_dentry **root_ret, size_t path_len, int name_type, ntfs_volume *vol, - struct add_image_params *params) + struct capture_params *params) { - le32 attributes; + u32 attributes; int ret; struct wim_dentry *root = NULL; struct wim_inode *inode = NULL; - if (should_exclude_path(path, path_len, params->config)) { - /* Exclude a file or directory tree based on the capture - * configuration file. */ - ret = 0; + ret = try_exclude(path, path_len, params); + if (ret < 0) /* Excluded? */ goto out_progress; - } + if (ret > 0) /* Error? */ + goto out; /* Get file attributes */ ret = ntfs_get_ntfs_attrib(ni, (char*)&attributes, sizeof(attributes)); @@ -549,18 +544,16 @@ 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; } params->progress.scan.cur_path = path; - do_capture_progress(params, WIMLIB_SCAN_DENTRY_UNSUPPORTED, NULL); - ret = 0; + ret = do_capture_progress(params, WIMLIB_SCAN_DENTRY_UNSUPPORTED, NULL); goto out; } @@ -578,44 +571,35 @@ build_dentry_tree_ntfs_recursive(struct wim_dentry **root_ret, if (inode->i_nlink > 1) { /* Shared inode; nothing more to do */ - ret = 0; goto out_progress; } inode->i_creation_time = le64_to_cpu(ni->creation_time); 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 = le32_to_cpu(attributes); - inode->i_resolved = 1; + inode->i_attributes = attributes; - /* 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) { + /* Scan the reparse point stream. */ + ret = scan_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. + /* Scan 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 = scan_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; @@ -627,11 +611,18 @@ build_dentry_tree_ntfs_recursive(struct wim_dentry **root_ret, .dos_name_map = &dos_name_map, .vol = vol, .params = params, + .ret = 0, }; ret = ntfs_readdir(ni, &pos, &ctx, wim_ntfs_capture_filldir); if (ret) { - ERROR_WITH_ERRNO("Error reading directory \"%s\"", path); - ret = WIMLIB_ERR_NTFS_3G; + if (ctx.ret) { + /* wimlib error */ + ret = ctx.ret; + } else { + /* error from ntfs_readdir() itself */ + ERROR_WITH_ERRNO("Error reading directory \"%s\"", path); + ret = WIMLIB_ERR_NTFS_3G; + } } else { struct wim_dentry *child; @@ -696,14 +687,16 @@ build_dentry_tree_ntfs_recursive(struct wim_dentry **root_ret, out_progress: params->progress.scan.cur_path = path; if (root == NULL) - do_capture_progress(params, WIMLIB_SCAN_DENTRY_EXCLUDED, NULL); + ret = do_capture_progress(params, WIMLIB_SCAN_DENTRY_EXCLUDED, NULL); else - do_capture_progress(params, WIMLIB_SCAN_DENTRY_OK, inode); + ret = do_capture_progress(params, WIMLIB_SCAN_DENTRY_OK, inode); out: - if (ret == 0) - *root_ret = root; - else - free_dentry_tree(root, params->lookup_table); + if (unlikely(ret)) { + free_dentry_tree(root, params->blob_table); + root = NULL; + ret = report_capture_error(params, ret, path); + } + *root_ret = root; return ret; } @@ -721,7 +714,7 @@ do_ntfs_umount(struct _ntfs_volume *vol) int build_dentry_tree_ntfs(struct wim_dentry **root_p, const char *device, - struct add_image_params *params) + struct capture_params *params) { ntfs_volume *vol; ntfs_inode *root_ni; @@ -792,8 +785,6 @@ out: if (do_ntfs_umount(vol)) { ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%s'", device); - if (ret == 0) - ret = WIMLIB_ERR_NTFS_3G; } } else { /* We need to leave the NTFS volume mounted so that we can read