X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Fntfs-3g_capture.c;h=06d46913966d8444bcf8c08b99a99eaa8a871e1c;hb=0b1278f508ef7606c822edadb3958c2c3648b419;hp=80abca02c8143864bb3493ed6eeea15930c4add7;hpb=b5b9681794d1f5f13350e3567f6f6e74f5c779cf;p=wimlib diff --git a/src/ntfs-3g_capture.c b/src/ntfs-3g_capture.c index 80abca02..06d46913 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 @@ -31,25 +29,23 @@ #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 * @@ -59,14 +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); @@ -75,10 +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; @@ -100,7 +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)); @@ -155,24 +151,39 @@ 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; + utf16lechar *stream_name; - 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 " @@ -180,109 +191,88 @@ 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; + + if (name_nchars) { + stream_name = utf16le_dupz(attr_record_name(actx->attr), + name_nchars * sizeof(ntfschar)); + if (!stream_name) { + ret = WIMLIB_ERR_NOMEM; + goto out_put_actx; + } + } else { + stream_name = NULL; + } 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)); if (!ntfs_loc) { ret = WIMLIB_ERR_NOMEM; - goto out_put_actx; + goto out_free_stream_name; } 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_dup(stream_name); + 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; } - 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 ? stream_name : NO_STREAM_NAME, + blob); + if (!strm) { + ret = WIMLIB_ERR_NOMEM; + goto out_free_blob; } + prepare_unhashed_blob(blob, inode, strm->stream_id, unhashed_blobs); + + FREE(stream_name); + stream_name = NULL; } if (errno == ENOENT) { ret = 0; @@ -291,20 +281,22 @@ 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_free_stream_name: + FREE(stream_name); 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; } @@ -341,7 +333,7 @@ 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 +355,7 @@ 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 +386,7 @@ 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 +423,8 @@ 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 +434,7 @@ 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 +506,11 @@ 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 +518,18 @@ 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)); @@ -549,12 +539,11 @@ 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; } @@ -577,44 +566,35 @@ 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; - - /* Capture streams. */ + inode->i_attributes = attributes; - 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. + /* Load the 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. - * - * 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; @@ -626,11 +606,18 @@ 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; @@ -699,10 +686,12 @@ out_progress: else 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; } @@ -720,7 +709,7 @@ 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; @@ -791,8 +780,6 @@ 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