* ntfs-capture.c
*
* Capture a WIM image from a NTFS volume. We capture everything we can,
- * including security data and alternate data streams. There should be no loss
- * of information.
+ * including security data and alternate data streams.
*/
/*
- * Copyright (C) 2012 Eric Biggers
+ * Copyright (C) 2012, 2013 Eric Biggers
*
* This file is part of wimlib, a library for working with WIM files.
*
* wimlib 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 2.1 of the License, or (at your option)
+ * 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 Lesser General Public License for more
+ * A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
* along with wimlib; if not, see http://www.gnu.org/licenses/.
*/
+
#include "config.h"
-#include "wimlib_internal.h"
+#include <ntfs-3g/endians.h>
+#include <ntfs-3g/types.h>
-#ifdef WITH_NTFS_3G
+#include "buffer_io.h"
#include "dentry.h"
#include "lookup_table.h"
-#include "io.h"
+#include "security.h"
+#include "wimlib_internal.h"
+
#include <ntfs-3g/layout.h>
#include <ntfs-3g/acls.h>
#include <ntfs-3g/attrib.h>
#include <ntfs-3g/misc.h>
#include <ntfs-3g/reparse.h>
-#include <ntfs-3g/security.h>
+#include <ntfs-3g/security.h> /* ntfs-3g/security.h before ntfs-3g/xattrs.h */
+#include <ntfs-3g/xattrs.h>
#include <ntfs-3g/volume.h>
#include <stdlib.h>
#include <unistd.h>
+#include <errno.h>
-extern int ntfs_inode_get_security(ntfs_inode *ni, u32 selection, char *buf,
- u32 buflen, u32 *psize);
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
+#endif
-extern int ntfs_inode_get_attributes(ntfs_inode *ni);
+static inline ntfschar *
+attr_record_name(ATTR_RECORD *ar)
+{
+ return (ntfschar*)((u8*)ar + le16_to_cpu(ar->name_offset));
+}
+
+/* Calculates the SHA1 message digest of a NTFS attribute.
+ *
+ * @ni: The NTFS inode containing the attribute.
+ * @ar: The ATTR_RECORD describing the attribute.
+ * @md: If successful, the returned SHA1 message digest.
+ * @reparse_tag_ret: Optional pointer into which the first 4 bytes of the
+ * attribute will be written (to get the reparse
+ * point ID)
+ *
+ * Return 0 on success or nonzero on error.
+ */
+static int
+ntfs_attr_sha1sum(ntfs_inode *ni, ATTR_RECORD *ar,
+ u8 md[SHA1_HASH_SIZE],
+ bool is_reparse_point,
+ u32 *reparse_tag_ret)
+{
+ s64 pos = 0;
+ s64 bytes_remaining;
+ char buf[BUFFER_SIZE];
+ ntfs_attr *na;
+ SHA_CTX ctx;
+
+ na = ntfs_attr_open(ni, ar->type, attr_record_name(ar),
+ ar->name_length);
+ if (!na) {
+ ERROR_WITH_ERRNO("Failed to open NTFS attribute");
+ return WIMLIB_ERR_NTFS_3G;
+ }
+
+ bytes_remaining = na->data_size;
+
+ if (is_reparse_point) {
+ if (ntfs_attr_pread(na, 0, 8, buf) != 8)
+ goto out_error;
+ *reparse_tag_ret = le32_to_cpu(*(u32*)buf);
+ DEBUG("ReparseTag = %#x", *reparse_tag_ret);
+ pos = 8;
+ bytes_remaining -= 8;
+ }
+
+ sha1_init(&ctx);
+ while (bytes_remaining) {
+ s64 to_read = min(bytes_remaining, sizeof(buf));
+ if (ntfs_attr_pread(na, pos, to_read, buf) != to_read)
+ goto out_error;
+ sha1_update(&ctx, buf, to_read);
+ pos += to_read;
+ bytes_remaining -= to_read;
+ }
+ sha1_final(md, &ctx);
+ ntfs_attr_close(na);
+ return 0;
+out_error:
+ ERROR_WITH_ERRNO("Error reading NTFS attribute");
+ return WIMLIB_ERR_NTFS_3G;
+}
+
+/* Load the streams from a file or reparse point in the NTFS volume into the WIM
+ * lookup table */
+static int
+capture_ntfs_streams(struct wim_dentry *dentry,
+ ntfs_inode *ni,
+ mbchar *path,
+ size_t path_len,
+ struct wim_lookup_table *lookup_table,
+ ntfs_volume **ntfs_vol_p,
+ ATTR_TYPES type)
+{
+ ntfs_attr_search_ctx *actx;
+ u8 attr_hash[SHA1_HASH_SIZE];
+ struct ntfs_location *ntfs_loc = NULL;
+ int ret = 0;
+ struct wim_lookup_table_entry *lte;
-struct sd_tree {
- u32 num_sds;
- struct wim_security_data *sd;
- struct sd_node *root;
+ DEBUG2("Capturing NTFS data streams 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 "
+ "context");
+ 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))
+ {
+ u32 reparse_tag;
+ u64 data_size = ntfs_get_attribute_value_length(actx->attr);
+ u64 name_length = actx->attr->name_length;
+ if (data_size == 0) {
+ if (errno != 0) {
+ ERROR_WITH_ERRNO("Failed to get size of attribute of "
+ "`%s'", path);
+ ret = WIMLIB_ERR_NTFS_3G;
+ goto out_put_actx;
+ }
+ /* Empty stream. No lookup table entry is needed. */
+ lte = NULL;
+ } else {
+ if (type == AT_REPARSE_POINT && data_size < 8) {
+ ERROR("`%s': reparse point buffer too small",
+ path);
+ ret = WIMLIB_ERR_NTFS_3G;
+ goto out_put_actx;
+ }
+ /* Checksum the stream. */
+ ret = ntfs_attr_sha1sum(ni, actx->attr, attr_hash,
+ type == AT_REPARSE_POINT, &reparse_tag);
+ if (ret != 0)
+ goto out_put_actx;
+
+ if (type == AT_REPARSE_POINT)
+ dentry->d_inode->i_reparse_tag = reparse_tag;
+
+ /* Make a lookup table entry for the stream, or use an existing
+ * one if there's already an identical stream. */
+ lte = __lookup_resource(lookup_table, attr_hash);
+ ret = WIMLIB_ERR_NOMEM;
+ if (lte) {
+ lte->refcnt++;
+ } else {
+ ntfs_loc = CALLOC(1, sizeof(*ntfs_loc));
+ if (!ntfs_loc)
+ goto out_put_actx;
+ ntfs_loc->ntfs_vol_p = ntfs_vol_p;
+ ntfs_loc->path = MALLOC(path_len + 1);
+ if (!ntfs_loc->path)
+ goto out_free_ntfs_loc;
+ memcpy(ntfs_loc->path, path, path_len + 1);
+ if (name_length) {
+ ntfs_loc->stream_name = MALLOC(name_length * 2);
+ if (!ntfs_loc->stream_name)
+ goto out_free_ntfs_loc;
+ memcpy(ntfs_loc->stream_name,
+ attr_record_name(actx->attr),
+ actx->attr->name_length * 2);
+ ntfs_loc->stream_name_nchars = name_length;
+ }
+
+ lte = new_lookup_table_entry();
+ if (!lte)
+ goto out_free_ntfs_loc;
+ lte->ntfs_loc = ntfs_loc;
+ lte->resource_location = RESOURCE_IN_NTFS_VOLUME;
+ if (type == AT_REPARSE_POINT) {
+ ntfs_loc->is_reparse_point = true;
+ lte->resource_entry.original_size = data_size - 8;
+ lte->resource_entry.size = data_size - 8;
+ } else {
+ ntfs_loc->is_reparse_point = false;
+ lte->resource_entry.original_size = data_size;
+ lte->resource_entry.size = data_size;
+ }
+ ntfs_loc = NULL;
+ copy_hash(lte->hash, attr_hash);
+ lookup_table_insert(lookup_table, lte);
+ }
+ }
+ if (name_length == 0) {
+ /* Unnamed data stream. Put the reference to it in the
+ * dentry's inode. */
+ if (dentry->d_inode->i_lte) {
+ WARNING("Found two un-named data streams for "
+ "`%s'", path);
+ free_lookup_table_entry(lte);
+ } else {
+ dentry->d_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(dentry->d_inode,
+ attr_record_name(actx->attr),
+ name_length * 2);
+ if (!new_ads_entry)
+ goto out_free_lte;
+ wimlib_assert(new_ads_entry->stream_name_nbytes == name_length * 2);
+ new_ads_entry->lte = lte;
+ }
+ }
+ ret = 0;
+ 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);
+ }
+out_put_actx:
+ ntfs_attr_put_search_ctx(actx);
+ if (ret == 0)
+ DEBUG2("Successfully captured NTFS streams from `%s'", path);
+ else
+ ERROR("Failed to capture NTFS streams from `%s", path);
+ return ret;
+}
+
+/* Red-black tree that maps NTFS inode numbers to DOS names */
+struct dos_name_map {
+ struct rb_root rb_root;
};
-struct sd_node {
- int security_id;
- u8 hash[SHA1_HASH_SIZE];
- struct sd_node *left;
- struct sd_node *right;
+struct dos_name_node {
+ struct rb_node rb_node;
+ char dos_name[24];
+ int name_nbytes;
+ u64 ntfs_ino;
};
-static void free_sd_tree(struct sd_node *root)
+/* Inserts a new DOS name into the map */
+static int
+insert_dos_name(struct dos_name_map *map, const ntfschar *dos_name,
+ size_t name_nbytes, u64 ntfs_ino)
{
- if (root) {
- free_sd_tree(root->left);
- free_sd_tree(root->right);
- FREE(root);
+ struct dos_name_node *new_node;
+ struct rb_node **p;
+ struct rb_root *root;
+ struct rb_node *rb_parent;
+
+ DEBUG("DOS name_len = %zu", name_nbytes);
+ new_node = MALLOC(sizeof(struct dos_name_node));
+ if (!new_node)
+ return -1;
+
+ /* DOS names are supposed to be 12 characters max (that's 24 bytes,
+ * assuming 2-byte ntfs characters) */
+ wimlib_assert(name_nbytes <= sizeof(new_node->dos_name));
+
+ /* Initialize the DOS name, DOS name length, and NTFS inode number of
+ * the red-black tree node */
+ memcpy(new_node->dos_name, dos_name, name_nbytes);
+ new_node->name_nbytes = name_nbytes;
+ new_node->ntfs_ino = ntfs_ino;
+
+ /* Insert the red-black tree node */
+ root = &map->rb_root;
+ p = &root->rb_node;
+ rb_parent = NULL;
+ while (*p) {
+ struct dos_name_node *this;
+
+ this = container_of(*p, struct dos_name_node, rb_node);
+ rb_parent = *p;
+ if (new_node->ntfs_ino < this->ntfs_ino)
+ p = &((*p)->rb_left);
+ else if (new_node->ntfs_ino > this->ntfs_ino)
+ p = &((*p)->rb_right);
+ else {
+ /* This should be impossible since a NTFS inode cannot
+ * have multiple DOS names, and we only should get each
+ * DOS name entry once from the ntfs_readdir() calls. */
+ ERROR("NTFS inode %"PRIu64" has multiple DOS names",
+ ntfs_ino);
+ return -1;
+ }
}
+ rb_link_node(&new_node->rb_node, rb_parent, p);
+ rb_insert_color(&new_node->rb_node, root);
+ DEBUG("Inserted DOS name for inode %"PRIu64, ntfs_ino);
+ return 0;
}
-static void insert_sd_node(struct sd_node *new, struct sd_node *root)
+/* Returns a structure that contains the DOS name and its length for a NTFS
+ * inode, or NULL if the inode has no DOS name. */
+static struct dos_name_node *
+lookup_dos_name(const struct dos_name_map *map, u64 ntfs_ino)
{
- int cmp = hashes_cmp(root->hash, new->hash);
- if (cmp < 0) {
- if (root->left)
- insert_sd_node(new, root->left);
- else
- root->left = new;
- } else if (cmp > 0) {
- if (root->right)
- insert_sd_node(new, root->right);
- else
- root->right = new;
- } else {
- wimlib_assert(0);
+ struct rb_node *node = map->rb_root.rb_node;
+ while (node) {
+ struct dos_name_node *this;
+ this = container_of(node, struct dos_name_node, rb_node);
+ if (ntfs_ino < this->ntfs_ino)
+ node = node->rb_left;
+ else if (ntfs_ino > this->ntfs_ino)
+ node = node->rb_right;
+ else
+ return this;
}
+ return NULL;
}
-static int lookup_sd(const u8 hash[SHA1_HASH_SIZE], struct sd_node *node)
+static int
+set_dentry_dos_name(struct wim_dentry *dentry, void *arg)
{
- int cmp;
- if (!node)
- return -1;
- cmp = hashes_cmp(hash, node->hash);
- if (cmp < 0)
- return lookup_sd(hash, node->left);
- else if (cmp > 0)
- return lookup_sd(hash, node->right);
- else
- return node->security_id;
+ const struct dos_name_map *map = arg;
+ const struct dos_name_node *node;
+
+ if (dentry->is_win32_name) {
+ node = lookup_dos_name(map, dentry->d_inode->i_ino);
+ if (node) {
+ dentry->short_name = MALLOC(node->name_nbytes + 2);
+ if (!dentry->short_name)
+ return WIMLIB_ERR_NOMEM;
+ memcpy(dentry->short_name, node->dos_name,
+ node->name_nbytes);
+ dentry->short_name[node->name_nbytes / 2] = 0;
+ dentry->short_name_nbytes = node->name_nbytes;
+ DEBUG("Assigned DOS name to ino %"PRIu64,
+ dentry->d_inode->i_ino);
+ } else {
+ WARNING("NTFS inode %"PRIu64" has Win32 name with no "
+ "corresponding DOS name",
+ dentry->d_inode->i_ino);
+ }
+ }
+ return 0;
+}
+
+static void
+free_dos_name_tree(struct rb_node *node) {
+ if (node) {
+ free_dos_name_tree(node->rb_left);
+ free_dos_name_tree(node->rb_right);
+ FREE(container_of(node, struct dos_name_node, rb_node));
+ }
}
-static int tree_add_sd(struct sd_tree *tree, const u8 *descriptor,
- size_t size)
+static void
+destroy_dos_name_map(struct dos_name_map *map)
{
- u8 hash[SHA1_HASH_SIZE];
- int security_id;
- struct sd_node *new;
- u8 **descriptors;
- u64 *sizes;
- u8 *descr_copy;
- struct wim_security_data *sd = tree->sd;
- sha1_buffer(descriptor, size, hash);
-
- security_id = lookup_sd(hash, tree->root);
- if (security_id >= 0)
- return security_id;
-
- new = MALLOC(sizeof(struct sd_node));
- if (!new)
- return -1;
- descr_copy = MALLOC(size);
- if (!descr_copy)
- goto out_free_node;
- memcpy(descr_copy, descriptor, size);
- new->security_id = tree->num_sds++;
- new->left = NULL;
- new->right = NULL;
- copy_hash(new->hash, hash);
-
- descriptors = REALLOC(sd->descriptors,
- (sd->num_entries + 1) * sizeof(sd->descriptors[0]));
- if (!descriptors)
- goto out_free_descr;
- sd->descriptors = descriptors;
- sizes = REALLOC(sd->sizes,
- (sd->num_entries + 1) * sizeof(sd->sizes[0]));
- if (!sizes)
- goto out_free_descr;
- sd->sizes = sizes;
- sd->descriptors[sd->num_entries] = descr_copy;
- sd->sizes[sd->num_entries] = size;
- sd->num_entries++;
- sd->total_length += size + 8;
-
- if (tree->root)
- insert_sd_node(tree->root, new);
- else
- tree->root = new;
- return new->security_id;
-out_free_descr:
- FREE(descr_copy);
-out_free_node:
- FREE(new);
- return -1;
+ free_dos_name_tree(map->rb_root.rb_node);
}
-#if 0
-static int build_sd_tree(struct wim_security_data *sd, struct sd_tree *tree)
+struct readdir_ctx {
+ struct wim_dentry *parent;
+ ntfs_inode *dir_ni;
+ mbchar *path;
+ size_t path_len;
+ struct wim_lookup_table *lookup_table;
+ struct sd_set *sd_set;
+ struct dos_name_map *dos_name_map;
+ const struct capture_config *config;
+ ntfs_volume **ntfs_vol_p;
+ int add_image_flags;
+ wimlib_progress_func_t progress_func;
+};
+
+static int
+build_dentry_tree_ntfs_recursive(struct wim_dentry **root_p,
+ ntfs_inode *dir_ni,
+ ntfs_inode *ni,
+ mbchar *path,
+ size_t path_len,
+ int name_type,
+ struct wim_lookup_table *lookup_table,
+ struct sd_set *sd_set,
+ const struct capture_config *config,
+ ntfs_volume **ntfs_vol_p,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func);
+
+static int
+wim_ntfs_capture_filldir(void *dirent, const ntfschar *name,
+ const int name_nchars, const int name_type,
+ const s64 pos, const MFT_REF mref,
+ const unsigned dt_type)
{
+ struct readdir_ctx *ctx;
+ size_t mbs_name_nbytes;
+ mbchar *mbs_name;
+ struct wim_dentry *child;
int ret;
- u32 orig_num_entries = sd->num_entries;
- u32 orig_total_length = sd->total_length;
+ size_t path_len;
+ size_t name_nbytes = name_nchars * sizeof(ntfschar);
- tree->num_sds = 0;
- tree->sd = sd;
- tree->root = NULL;
+ ctx = dirent;
+ if (name_type & FILE_NAME_DOS) {
+ /* If this is the entry for a DOS name, store it for later. */
+ ret = insert_dos_name(ctx->dos_name_map, name,
+ name_nbytes, mref & MFT_REF_MASK_CPU);
- for (u32 i = 0; i < sd->num_entries; i++) {
- ret = tree_add_sd(tree, sd->descriptors[i], sd->sizes[i]);
- if (ret < 0)
- goto out_revert;
+ /* Return now if an error occurred or if this is just a DOS name
+ * and not a Win32+DOS name. */
+ if (ret != 0 || name_type == FILE_NAME_DOS)
+ goto out;
}
- return 0;
-out_revert:
- sd->num_entries = orig_num_entries;
- sd->total_length = orig_total_length;
- free_sd_tree(tree->root);
+ ret = utf16le_to_mbs(name, name_nbytes,
+ &mbs_name, &mbs_name_nbytes);
+ if (ret)
+ goto out;
+
+ if (mbs_name[0] == '.' &&
+ (mbs_name[1] == '\0' ||
+ (mbs_name[1] == '.' && mbs_name[2] == '\0'))) {
+ /* . or .. entries
+ *
+ * note: name_type is POSIX for these, so DOS names will not
+ * have been inserted for them. */
+ ret = 0;
+ goto out_free_mbs_name;
+ }
+
+ /* Open the inode for this directory entry and recursively capture the
+ * directory tree rooted at it */
+ ntfs_inode *ni = ntfs_inode_open(ctx->dir_ni->vol, mref);
+ if (!ni) {
+ ERROR_WITH_ERRNO("Failed to open NTFS inode");
+ ret = -1;
+ goto out_free_mbs_name;
+ }
+ path_len = ctx->path_len;
+ if (path_len != 1)
+ ctx->path[path_len++] = '/';
+ memcpy(ctx->path + path_len, mbs_name, mbs_name_nbytes + 1);
+ path_len += mbs_name_nbytes;
+ child = NULL;
+ ret = build_dentry_tree_ntfs_recursive(&child, ctx->dir_ni,
+ ni, ctx->path, path_len, name_type,
+ ctx->lookup_table, ctx->sd_set,
+ ctx->config, ctx->ntfs_vol_p,
+ ctx->add_image_flags,
+ ctx->progress_func);
+ if (child)
+ dentry_add_child(ctx->parent, child);
+ ntfs_inode_close(ni);
+out_free_mbs_name:
+ FREE(mbs_name);
+out:
return ret;
}
-#endif
-static int ntfs_attr_sha1sum(ntfs_inode *ni, ATTR_RECORD *ar,
- u8 md[SHA1_HASH_SIZE])
+/* Recursively build a WIM dentry tree corresponding to a 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.
+ */
+static int
+build_dentry_tree_ntfs_recursive(struct wim_dentry **root_p,
+ ntfs_inode *dir_ni,
+ ntfs_inode *ni,
+ mbchar *path,
+ size_t path_len,
+ int name_type,
+ struct wim_lookup_table *lookup_table,
+ struct sd_set *sd_set,
+ const struct capture_config *config,
+ ntfs_volume **ntfs_vol_p,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func)
{
- s64 pos = 0;
- s64 bytes_remaining;
- char buf[4096];
- ntfs_attr *na;
- SHA_CTX ctx;
+ u32 attributes;
+ int ret;
+ struct wim_dentry *root;
- na = ntfs_attr_open(ni, ar->type,
- (ntfschar*)((u8*)ar + le16_to_cpu(ar->name_offset)),
- ar->name_length);
- if (!na) {
- ERROR_WITH_ERRNO("Failed to open NTFS attribute");
- return WIMLIB_ERR_NTFS_3G;
+ if (exclude_path(path, config, false)) {
+ /* Exclude a file or directory tree based on the capture
+ * configuration file */
+ if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE)
+ && progress_func)
+ {
+ union wimlib_progress_info info;
+ info.scan.cur_path = path;
+ info.scan.excluded = true;
+ progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
+ }
+ *root_p = NULL;
+ return 0;
}
- bytes_remaining = na->data_size;
- sha1_init(&ctx);
+ /* Get file attributes */
+ struct SECURITY_CONTEXT ctx;
+ memset(&ctx, 0, sizeof(ctx));
+ ctx.vol = ni->vol;
+ ret = ntfs_xattr_system_getxattr(&ctx, XATTR_NTFS_ATTRIB,
+ ni, dir_ni, (char *)&attributes,
+ sizeof(u32));
+ if (ret != 4) {
+ ERROR_WITH_ERRNO("Failed to get NTFS attributes from `%s'",
+ path);
+ return WIMLIB_ERR_NTFS_3G;
+ }
- 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 NTFS attribute");
- return WIMLIB_ERR_NTFS_3G;
- }
- sha1_update(&ctx, buf, to_read);
- pos += to_read;
- bytes_remaining -= to_read;
+ if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE)
+ && progress_func)
+ {
+ union wimlib_progress_info info;
+ info.scan.cur_path = path;
+ info.scan.excluded = false;
+ progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
}
- sha1_final(md, &ctx);
- ntfs_attr_close(na);
- return 0;
-}
-static int __build_dentry_tree_ntfs(struct dentry *dentry, ntfs_inode *ni,
- char path[], size_t path_len,
- struct lookup_table *lookup_table,
- struct sd_tree *tree)
-{
- u32 attributes = ntfs_inode_get_attributes(ni);
- int mrec_flags = ni->mrec->flags;
- u32 sd_size;
- int ret = 0;
+ /* Create the new WIM dentry */
+ ret = new_dentry_with_timeless_inode(path_basename(path), &root);
+ if (ret)
+ return ret;
+
+ *root_p = root;
+
+ if (name_type & FILE_NAME_WIN32) /* Win32 or Win32+DOS name */
+ root->is_win32_name = 1;
+ root->d_inode->i_creation_time = le64_to_cpu(ni->creation_time);
+ root->d_inode->i_last_write_time = le64_to_cpu(ni->last_data_change_time);
+ root->d_inode->i_last_access_time = le64_to_cpu(ni->last_access_time);
+ root->d_inode->i_attributes = le32_to_cpu(attributes);
+ root->d_inode->i_ino = ni->mft_no;
+ root->d_inode->i_resolved = 1;
- dentry->creation_time = le64_to_cpu(ni->creation_time);
- dentry->last_write_time = le64_to_cpu(ni->last_data_change_time);
- dentry->last_access_time = le64_to_cpu(ni->last_access_time);
- dentry->security_id = le32_to_cpu(ni->security_id);
- dentry->attributes = le32_to_cpu(attributes);
- dentry->resolved = true;
+ if (attributes & FILE_ATTR_REPARSE_POINT) {
+ /* Junction point, symbolic link, or other reparse point */
+ ret = capture_ntfs_streams(root, ni, path, path_len,
+ lookup_table, ntfs_vol_p,
+ AT_REPARSE_POINT);
+ } else if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) {
- if (mrec_flags & MFT_RECORD_IS_DIRECTORY) {
- if (attributes & FILE_ATTR_REPARSE_POINT) {
- /* Junction point */
+ /* Normal directory */
+ s64 pos = 0;
+ struct dos_name_map dos_name_map = { .rb_root = {.rb_node = NULL} };
+ struct readdir_ctx ctx = {
+ .parent = root,
+ .dir_ni = ni,
+ .path = path,
+ .path_len = path_len,
+ .lookup_table = lookup_table,
+ .sd_set = sd_set,
+ .dos_name_map = &dos_name_map,
+ .config = config,
+ .ntfs_vol_p = ntfs_vol_p,
+ .add_image_flags = add_image_flags,
+ .progress_func = progress_func,
+ };
+ ret = ntfs_readdir(ni, &pos, &ctx, wim_ntfs_capture_filldir);
+ if (ret) {
+ ERROR_WITH_ERRNO("ntfs_readdir()");
+ ret = WIMLIB_ERR_NTFS_3G;
} else {
- /* Normal directory */
+ ret = for_dentry_child(root, set_dentry_dos_name,
+ &dos_name_map);
}
+ destroy_dos_name_map(&dos_name_map);
} else {
- if (attributes & FILE_ATTR_REPARSE_POINT) {
- /* Symbolic link or other reparse point */
- } else {
- /* Normal file */
- ntfs_attr_search_ctx *actx;
- u8 attr_hash[SHA1_HASH_SIZE];
- struct lookup_table_entry *lte;
-
- actx = ntfs_attr_get_search_ctx(ni, NULL);
- if (!actx) {
- ERROR_WITH_ERRNO("Cannot get attribute search "
- "context");
- return WIMLIB_ERR_NTFS_3G;
- }
- while (!ntfs_attr_lookup(AT_DATA, NULL, 0,
- CASE_SENSITIVE, 0, NULL, 0, actx))
- {
- ret = ntfs_attr_sha1sum(ni, actx->attr, attr_hash);
- if (ret != 0)
- return ret;
- lte = __lookup_resource(lookup_table, attr_hash);
- if (lte) {
- lte->refcnt++;
- } else {
- /*char *file_on_disk = STRDUP(root_disk_path);*/
- /*if (!file_on_disk) {*/
- /*ERROR("Failed to allocate memory for file path");*/
- /*return WIMLIB_ERR_NOMEM;*/
- /*}*/
- /*lte = new_lookup_table_entry();*/
- /*if (!lte) {*/
- /*FREE(file_on_disk);*/
- /*return WIMLIB_ERR_NOMEM;*/
- /*}*/
- /*lte->file_on_disk = file_on_disk;*/
- /*lte->resource_location = RESOURCE_IN_FILE_ON_DISK;*/
- /*lte->resource_entry.original_size = root_stbuf.st_size;*/
- /*lte->resource_entry.size = root_stbuf.st_size;*/
- /*copy_hash(lte->hash, hash);*/
- /*lookup_table_insert(lookup_table, lte);*/
- }
- dentry->lte = lte;
- }
+ /* Normal file */
+ ret = capture_ntfs_streams(root, ni, path, path_len,
+ lookup_table, ntfs_vol_p,
+ AT_DATA);
+ }
+ if (ret != 0)
+ return ret;
+
+ /* Get security descriptor */
+ char _sd[1];
+ char *sd = _sd;
+ errno = 0;
+ ret = ntfs_xattr_system_getxattr(&ctx, XATTR_NTFS_ACL,
+ ni, dir_ni, sd,
+ sizeof(sd));
+ if (ret > sizeof(sd)) {
+ sd = alloca(ret);
+ ret = ntfs_xattr_system_getxattr(&ctx, XATTR_NTFS_ACL,
+ ni, dir_ni, sd, ret);
+ }
+ if (ret > 0) {
+ root->d_inode->i_security_id = sd_set_add_sd(sd_set, sd, ret);
+ if (root->d_inode->i_security_id == -1) {
+ ERROR("Out of memory");
+ return WIMLIB_ERR_NOMEM;
}
+ DEBUG("Added security ID = %u for `%s'",
+ root->d_inode->i_security_id, path);
+ ret = 0;
+ } else if (ret < 0) {
+ ERROR_WITH_ERRNO("Failed to get security information from "
+ "`%s'", path);
+ ret = WIMLIB_ERR_NTFS_3G;
+ } else {
+ root->d_inode->i_security_id = -1;
+ DEBUG("No security ID for `%s'", path);
}
- ret = ntfs_inode_get_security(ni,
- OWNER_SECURITY_INFORMATION |
- GROUP_SECURITY_INFORMATION |
- DACL_SECURITY_INFORMATION |
- SACL_SECURITY_INFORMATION,
- NULL, 0, &sd_size);
- u8 sd[sd_size];
- ret = ntfs_inode_get_security(ni,
- OWNER_SECURITY_INFORMATION |
- GROUP_SECURITY_INFORMATION |
- DACL_SECURITY_INFORMATION |
- SACL_SECURITY_INFORMATION,
- sd, sd_size, &sd_size);
- dentry->security_id = tree_add_sd(tree, sd, sd_size);
- return 0;
+ return ret;
}
-static int build_dentry_tree_ntfs(struct dentry *root_dentry,
- const char *device,
- struct lookup_table *lookup_table,
- struct wim_security_data *sd,
- int flags,
- void *extra_arg)
+int
+build_dentry_tree_ntfs(struct wim_dentry **root_p,
+ const mbchar *device,
+ struct wim_lookup_table *lookup_table,
+ struct wim_security_data *sd,
+ const struct capture_config *config,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func,
+ void *extra_arg)
{
ntfs_volume *vol;
ntfs_inode *root_ni;
- int ret = 0;
- struct sd_tree tree;
- tree.sd = sd;
- tree.root = NULL;
+ int ret;
+ struct sd_set sd_set = {
+ .sd = sd,
+ .rb_root = {NULL},
+ };
ntfs_volume **ntfs_vol_p = extra_arg;
-
+
+ DEBUG("Mounting NTFS volume `%s' read-only", device);
+
+#ifdef HAVE_NTFS_MNT_RDONLY
+ /* NTFS-3g 2013 */
+ vol = ntfs_mount(device, NTFS_MNT_RDONLY);
+#else
+ /* NTFS-3g 2011, 2012 */
vol = ntfs_mount(device, MS_RDONLY);
+#endif
if (!vol) {
ERROR_WITH_ERRNO("Failed to mount NTFS volume `%s' read-only",
device);
return WIMLIB_ERR_NTFS_3G;
}
+ ntfs_open_secure(vol);
+
+ /* We don't want to capture the special NTFS files such as $Bitmap. Not
+ * to be confused with "hidden" or "system" files which are real files
+ * that we do need to capture. */
+ NVolClearShowSysFiles(vol);
+
+ DEBUG("Opening root NTFS dentry");
root_ni = ntfs_inode_open(vol, FILE_root);
if (!root_ni) {
ERROR_WITH_ERRNO("Failed to open root inode of NTFS volume "
ret = WIMLIB_ERR_NTFS_3G;
goto out;
}
- char path[4096];
+
+ /* Currently we assume that all the paths fit into this length and there
+ * is no check for overflow. */
+ mbchar *path = MALLOC(32768);
+ if (!path) {
+ ERROR("Could not allocate memory for NTFS pathname");
+ ret = WIMLIB_ERR_NOMEM;
+ goto out_cleanup;
+ }
+
path[0] = '/';
path[1] = '\0';
- ret = __build_dentry_tree_ntfs(root_dentry, root_ni, path, 1,
- lookup_table, &tree);
-
+ ret = build_dentry_tree_ntfs_recursive(root_p, NULL, root_ni, path, 1,
+ FILE_NAME_POSIX, lookup_table,
+ &sd_set,
+ config, ntfs_vol_p,
+ add_image_flags,
+ progress_func);
+out_cleanup:
+ FREE(path);
+ ntfs_inode_close(root_ni);
+ destroy_sd_set(&sd_set);
out:
- if (ntfs_umount(vol, FALSE) != 0) {
- ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%s'", device);
- if (ret == 0)
- ret = WIMLIB_ERR_NTFS_3G;
- }
- return ret;
-}
+ ntfs_index_ctx_put(vol->secure_xsii);
+ ntfs_index_ctx_put(vol->secure_xsdh);
+ ntfs_inode_close(vol->secure_ni);
-WIMLIBAPI int wimlib_add_image_from_ntfs_volume(WIMStruct *w,
- const char *device,
- const char *name,
- const char *description,
- const char *flags_element,
- int flags)
-{
- if (flags & (WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE)) {
- ERROR("Cannot dereference files when capturing directly from NTFS");
- return WIMLIB_ERR_INVALID_PARAM;
+ if (ret) {
+ if (ntfs_umount(vol, FALSE) != 0) {
+ 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
+ * the NTFS files again when we are actually writing the WIM */
+ *ntfs_vol_p = vol;
}
- return do_add_image(w, device, name, description, flags_element, flags,
- build_dentry_tree_ntfs,
- &w->ntfs_vol);
-}
-
-#else /* WITH_NTFS_3G */
-WIMLIBAPI int wimlib_add_image_from_ntfs_volume(WIMStruct *w,
- const char *device,
- const char *name,
- const char *description,
- const char *flags_element,
- int flags)
-{
- ERROR("wimlib was compiled without support for NTFS-3g, so");
- ERROR("we cannot capture a WIM image directly from a NTFS volume");
- return WIMLIB_ERR_UNSUPPORTED;
+ return ret;
}
-#endif /* WITH_NTFS_3G */
git://wimlib.net / wimlib / blobdiff