]> wimlib.net Git - wimlib/blobdiff - src/ntfs-capture.c
inode updates (IN PROGRESS)
[wimlib] / src / ntfs-capture.c
index 8d1fe0e6409023cb4386c7dbbb0558f844eaa231..6751754782e8a1782985930f7df3defe25f17e1e 100644 (file)
@@ -2,8 +2,7 @@
  * 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.
  */
 
 /*
  * 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"
+
+#ifdef WITH_NTFS_3G
+#include <ntfs-3g/endians.h>
+#include <ntfs-3g/types.h>
+#endif
+
 #include "wimlib_internal.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> /* security.h before 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,
+#if 0
+extern int ntfs_get_inode_security(ntfs_inode *ni, u32 selection, char *buf,
                                   u32 buflen, u32 *psize);
 
-extern int ntfs_inode_get_attributes(ntfs_inode *ni);
+extern u32 ntfs_get_inode_attributes(ntfs_inode *ni);
+#endif
 
 /* Structure that allows searching the security descriptors by SHA1 message
  * digest. */
@@ -63,15 +73,19 @@ struct sd_node {
        struct sd_node *right;
 };
 
-/* Frees a security descriptor index tree. */
-static void free_sd_set(struct sd_node *root)
+static void free_sd_tree(struct sd_node *root)
 {
        if (root) {
-               free_sd_set(root->left);
-               free_sd_set(root->right);
+               free_sd_tree(root->left);
+               free_sd_tree(root->right);
                FREE(root);
        }
 }
+/* Frees a security descriptor index set. */
+static void destroy_sd_set(struct sd_set *sd_set)
+{
+       free_sd_tree(sd_set->root);
+}
 
 /* Inserts a a new node into the security descriptor index tree. */
 static void insert_sd_node(struct sd_node *new, struct sd_node *root)
@@ -117,7 +131,7 @@ static int lookup_sd(const u8 hash[SHA1_HASH_SIZE], struct sd_node *root)
  * the security ID for it.  If a new security descriptor cannot be allocated,
  * return -1.
  */
-static int sd_set_add_sd(struct sd_set *sd_set, const u8 *descriptor,
+static int sd_set_add_sd(struct sd_set *sd_set, const char descriptor[],
                         size_t size)
 {
        u8 hash[SHA1_HASH_SIZE];
@@ -128,7 +142,8 @@ static int sd_set_add_sd(struct sd_set *sd_set, const u8 *descriptor,
        u8 *descr_copy;
        struct wim_security_data *sd;
 
-       sha1_buffer(descriptor, size, hash);
+       sha1_buffer((const u8*)descriptor, size, hash);
+
        security_id = lookup_sd(hash, sd_set->root);
        if (security_id >= 0)
                return security_id;
@@ -162,10 +177,11 @@ static int sd_set_add_sd(struct sd_set *sd_set, const u8 *descriptor,
        sd->descriptors[sd->num_entries] = descr_copy;
        sd->sizes[sd->num_entries] = size;
        sd->num_entries++;
+       DEBUG("There are now %d security descriptors", sd->num_entries);
        sd->total_length += size + sizeof(sd->sizes[0]);
 
        if (sd_set->root)
-               insert_sd_node(sd_set->root, new);
+               insert_sd_node(new, sd_set->root);
        else
                sd_set->root = new;
        return new->security_id;
@@ -187,11 +203,15 @@ static inline ntfschar *attr_record_name(ATTR_RECORD *ar)
  * @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])
+                            u8 md[SHA1_HASH_SIZE],
+                            u32 *reparse_tag_ret)
 {
        s64 pos = 0;
        s64 bytes_remaining;
@@ -209,8 +229,8 @@ static int ntfs_attr_sha1sum(ntfs_inode *ni, ATTR_RECORD *ar,
        bytes_remaining = na->data_size;
        sha1_init(&ctx);
 
-       DEBUG("Calculating SHA1 message digest (%"PRIu64" bytes)",
-                       bytes_remaining);
+       DEBUG2("Calculating SHA1 message digest (%"PRIu64" bytes)",
+              bytes_remaining);
 
        while (bytes_remaining) {
                s64 to_read = min(bytes_remaining, sizeof(buf));
@@ -218,6 +238,8 @@ static int ntfs_attr_sha1sum(ntfs_inode *ni, ATTR_RECORD *ar,
                        ERROR_WITH_ERRNO("Error reading NTFS attribute");
                        return WIMLIB_ERR_NTFS_3G;
                }
+               if (bytes_remaining == na->data_size && reparse_tag_ret)
+                       *reparse_tag_ret = le32_to_cpu(*(u32*)buf);
                sha1_update(&ctx, buf, to_read);
                pos += to_read;
                bytes_remaining -= to_read;
@@ -238,16 +260,16 @@ static int capture_ntfs_streams(struct dentry *dentry, ntfs_inode *ni,
 
        ntfs_attr_search_ctx *actx;
        u8 attr_hash[SHA1_HASH_SIZE];
-       struct ntfs_location *ntfs_loc;
-       struct lookup_table_entry *lte;
+       struct ntfs_location *ntfs_loc = NULL;
        int ret = 0;
+       struct lookup_table_entry *lte;
 
-       DEBUG("Capturing NTFS data streams from `%s'", path);
+       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 attribute search "
+               ERROR_WITH_ERRNO("Cannot get NTFS attribute search "
                                 "context");
                return WIMLIB_ERR_NTFS_3G;
        }
@@ -258,67 +280,105 @@ static int capture_ntfs_streams(struct dentry *dentry, ntfs_inode *ni,
        {
                char *stream_name_utf8;
                size_t stream_name_utf16_len;
-
-               /* Checksum the stream. */
-               ret = ntfs_attr_sha1sum(ni, actx->attr, attr_hash);
-               if (ret != 0)
-                       goto out_put_actx;
-
-               /* 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++;
+               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 {
-                       struct ntfs_location *ntfs_loc;
-
-                       ntfs_loc = CALLOC(1, sizeof(*ntfs_loc));
-                       if (!ntfs_loc)
+                       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, &reparse_tag);
+                       if (ret != 0)
                                goto out_put_actx;
-                       ntfs_loc->ntfs_vol_p = ntfs_vol_p;
-                       ntfs_loc->path_utf8 = MALLOC(path_len + 1);
-                       if (!ntfs_loc->path_utf8)
-                               goto out_free_ntfs_loc;
-                       memcpy(ntfs_loc->path_utf8, path, path_len + 1);
-                       ntfs_loc->stream_name_utf16 = MALLOC(actx->attr->name_length * 2);
-                       if (!ntfs_loc->stream_name_utf16)
-                               goto out_free_ntfs_loc;
-                       memcpy(ntfs_loc->stream_name_utf16,
-                              attr_record_name(actx->attr),
-                              actx->attr->name_length * 2);
-
-                       ntfs_loc->stream_name_utf16_num_chars = actx->attr->name_length;
-                       ntfs_loc->is_reparse_point = (type == AT_REPARSE_POINT);
-                       lte = new_lookup_table_entry();
-                       if (!lte)
-                               goto out_free_ntfs_loc;
-                       lte->ntfs_loc = ntfs_loc;
-                       lte->resource_location = RESOURCE_IN_NTFS_VOLUME;
-                       lte->resource_entry.original_size = actx->attr->data_size;
-                       lte->resource_entry.size = actx->attr->data_size;
-                       copy_hash(lte->hash, attr_hash);
-                       lookup_table_insert(lookup_table, lte);
+
+                       /* 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_utf8 = MALLOC(path_len + 1);
+                               if (!ntfs_loc->path_utf8)
+                                       goto out_free_ntfs_loc;
+                               memcpy(ntfs_loc->path_utf8, path, path_len + 1);
+                               if (name_length) {
+                                       ntfs_loc->stream_name_utf16 = MALLOC(name_length * 2);
+                                       if (!ntfs_loc->stream_name_utf16)
+                                               goto out_free_ntfs_loc;
+                                       memcpy(ntfs_loc->stream_name_utf16,
+                                              attr_record_name(actx->attr),
+                                              actx->attr->name_length * 2);
+                                       ntfs_loc->stream_name_utf16_num_chars = 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) {
+                                       dentry->inode->reparse_tag = reparse_tag;
+                                       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;
+                               DEBUG("Add resource for `%s' (size = %zu)",
+                                     dentry->file_name_utf8,
+                                     lte->resource_entry.original_size);
+                               copy_hash(lte->hash, attr_hash);
+                               lookup_table_insert(lookup_table, lte);
+                       }
                }
-               if (actx->attr->name_length == 0) {
-                       if (dentry->lte) {
+               if (name_length == 0) {
+                       /* Unnamed data stream.  Put the reference to it in the
+                        * dentry's inode. */
+                       if (dentry->inode->lte) {
                                ERROR("Found two un-named data streams for "
                                      "`%s'", path);
                                ret = WIMLIB_ERR_NTFS_3G;
                                goto out_free_lte;
                        }
-                       dentry->lte = lte;
+                       dentry->inode->lte = lte;
                } else {
+                       /* Named data stream.  Put the reference to it in the
+                        * alternate data stream entries */
                        struct ads_entry *new_ads_entry;
-                       stream_name_utf8 = utf16_to_utf8((const u8*)attr_record_name(actx->attr),
-                                                        actx->attr->name_length,
-                                                        &stream_name_utf16_len);
+                       size_t stream_name_utf8_len;
+                       stream_name_utf8 = utf16_to_utf8((const char*)attr_record_name(actx->attr),
+                                                        name_length * 2,
+                                                        &stream_name_utf8_len);
                        if (!stream_name_utf8)
                                goto out_free_lte;
-                       new_ads_entry = dentry_add_ads(dentry, stream_name_utf8);
+                       new_ads_entry = inode_add_ads(dentry->inode, stream_name_utf8);
                        FREE(stream_name_utf8);
                        if (!new_ads_entry)
                                goto out_free_lte;
+
+                       wimlib_assert(new_ads_entry->stream_name_len == name_length * 2);
                                
                        new_ads_entry->lte = lte;
                }
@@ -336,9 +396,9 @@ out_free_ntfs_loc:
 out_put_actx:
        ntfs_attr_put_search_ctx(actx);
        if (ret == 0)
-               DEBUG("Successfully captured NTFS streams from `%s'", path);
+               DEBUG2("Successfully captured NTFS streams from `%s'", path);
        else
-               DEBUG("Failed to capture NTFS streams from `%s", path);
+               ERROR("Failed to capture NTFS streams from `%s", path);
        return ret;
 }
 
@@ -351,15 +411,18 @@ struct readdir_ctx {
        struct sd_set       *sd_set;
        const struct capture_config *config;
        ntfs_volume        **ntfs_vol_p;
+       int                  flags;
 };
 
-static int __build_dentry_tree_ntfs(struct dentry **root_p, ntfs_inode *ni,
-                                   char path[], size_t path_len,
-                                   struct lookup_table *lookup_table,
-                                   struct sd_set *sd_set,
-                                   const struct capture_config *config,
-                                   ntfs_volume **ntfs_vol_p);
-
+static int
+build_dentry_tree_ntfs_recursive(struct dentry **root_p, ntfs_inode *dir_ni,
+                                ntfs_inode *ni, char path[], size_t path_len,
+                                int name_type,
+                                struct lookup_table *lookup_table,
+                                struct sd_set *sd_set,
+                                const struct capture_config *config,
+                                ntfs_volume **ntfs_vol_p,
+                                int flags);
 
 static int wim_ntfs_capture_filldir(void *dirent, const ntfschar *name,
                                    const int name_len, const int name_type,
@@ -369,13 +432,16 @@ static int wim_ntfs_capture_filldir(void *dirent, const ntfschar *name,
        struct readdir_ctx *ctx;
        size_t utf8_name_len;
        char *utf8_name;
-       struct dentry *child;
+       struct dentry *child = NULL;
        int ret;
        size_t path_len;
 
+       if (name_type == FILE_NAME_DOS)
+               return 0;
+
        ret = -1;
 
-       utf8_name = utf16_to_utf8((const u8*)name, name_len * 2,
+       utf8_name = utf16_to_utf8((const char*)name, name_len * 2,
                                  &utf8_name_len);
        if (!utf8_name)
                goto out;
@@ -383,13 +449,10 @@ static int wim_ntfs_capture_filldir(void *dirent, const ntfschar *name,
        if (utf8_name[0] == '.' &&
             (utf8_name[1] == '\0' ||
              (utf8_name[1] == '.' && utf8_name[2] == '\0'))) {
-               DEBUG("Skipping dentry `%s'", utf8_name);
                ret = 0;
                goto out_free_utf8_name;
        }
 
-       DEBUG("Opening inode for `%s'", utf8_name);
-
        ctx = dirent;
 
        ntfs_inode *ni = ntfs_inode_open(ctx->dir_ni->vol, mref);
@@ -402,15 +465,15 @@ static int wim_ntfs_capture_filldir(void *dirent, const ntfschar *name,
                ctx->path[path_len++] = '/';
        memcpy(ctx->path + path_len, utf8_name, utf8_name_len + 1);
        path_len += utf8_name_len;
-       ret = __build_dentry_tree_ntfs(&child, ni, ctx->path, path_len,
-                                      ctx->lookup_table, ctx->sd_set,
-                                      ctx->config, ctx->ntfs_vol_p);
-       DEBUG("Linking dentry `%s' with parent `%s'",
-             child->file_name_utf8, ctx->parent->file_name_utf8);
-
-       link_dentry(child, ctx->parent);
-       DEBUG("Return %d", ret);
-out_close_ni:
+       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->flags);
+
+       if (child)
+               link_dentry(child, ctx->parent);
+
        ntfs_inode_close(ni);
 out_free_utf8_name:
        FREE(utf8_name);
@@ -418,52 +481,122 @@ out:
        return ret;
 }
 
+static int change_dentry_short_name(struct dentry *dentry,
+                                   const char short_name_utf8[],
+                                   int short_name_utf8_len)
+{
+       size_t short_name_utf16_len;
+       char *short_name_utf16;
+       short_name_utf16 = utf8_to_utf16(short_name_utf8, short_name_utf8_len,
+                                        &short_name_utf16_len);
+       if (!short_name_utf16) {
+               ERROR_WITH_ERRNO("Failed to convert short name to UTF-16");
+               return WIMLIB_ERR_NOMEM;
+       }
+       dentry->short_name = short_name_utf16;
+       dentry->short_name_len = short_name_utf16_len;
+       return 0;
+}
+
+/*#define HAVE_NTFS_INODE_FUNCTIONS*/
+
 /* 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(struct dentry **root_p, ntfs_inode *ni,
-                                   char path[], size_t path_len,
-                                   struct lookup_table *lookup_table,
-                                   struct sd_set *sd_set,
-                                   const struct capture_config *config,
-                                   ntfs_volume **ntfs_vol_p)
+static int build_dentry_tree_ntfs_recursive(struct dentry **root_p,
+                                           ntfs_inode *dir_ni,
+                                           ntfs_inode *ni,
+                                           char path[],
+                                           size_t path_len,
+                                           int name_type,
+                                           struct lookup_table *lookup_table,
+                                           struct sd_set *sd_set,
+                                           const struct capture_config *config,
+                                           ntfs_volume **ntfs_vol_p,
+                                           int flags)
 {
        u32 attributes;
        int mrec_flags;
-       u32 sd_size;
-       int ret = 0;
+       u32 sd_size = 0;
+       int ret;
+       char dos_name_utf8[64];
        struct dentry *root;
 
-       if (exclude_path(path, config)) {
-               DEBUG("Excluding `%s' from capture", path);
+       mrec_flags = ni->mrec->flags;
+#ifdef HAVE_NTFS_INODE_FUNCTIONS
+       attributes = ntfs_get_inode_attributes(ni);
+#else
+       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;
+       }
+#endif
+
+       if (exclude_path(path, config, false)) {
+               if (flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE) {
+                       const char *file_type;
+                       if (attributes & MFT_RECORD_IS_DIRECTORY)
+                               file_type = "directory";
+                       else
+                               file_type = "file";
+                       printf("Excluding %s `%s' from capture\n",
+                              file_type, path);
+               }
+               *root_p = NULL;
                return 0;
        }
 
-       DEBUG("Starting recursive capture at path = `%s'", path);
-       mrec_flags = ni->mrec->flags;
-       attributes = ntfs_inode_get_attributes(ni);
+       if (flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE)
+               printf("Scanning `%s'\n", path);
 
-       root = new_dentry(path_basename(path));
+       root = new_dentry_with_inode(path_basename(path));
        if (!root)
                return WIMLIB_ERR_NOMEM;
+       *root_p = root;
 
-       root->creation_time    = le64_to_cpu(ni->creation_time);
-       root->last_write_time  = le64_to_cpu(ni->last_data_change_time);
-       root->last_access_time = le64_to_cpu(ni->last_access_time);
-       root->security_id      = le32_to_cpu(ni->security_id);
-       root->attributes       = le32_to_cpu(attributes);
-       root->hard_link  = ni->mft_no;
-       root->resolved = true;
+       if (dir_ni && (name_type == FILE_NAME_WIN32_AND_DOS
+                      || name_type == FILE_NAME_WIN32))
+       {
+               ret = ntfs_get_ntfs_dos_name(ni, dir_ni, dos_name_utf8,
+                                            sizeof(dos_name_utf8));
+               if (ret > 0) {
+                       DEBUG("Changing short name of `%s'", path);
+                       ret = change_dentry_short_name(root, dos_name_utf8,
+                                                      ret);
+                       if (ret != 0)
+                               return ret;
+               } else {
+               #ifdef ENODATA
+                       if (errno != ENODATA) {
+                               ERROR_WITH_ERRNO("Error getting DOS name "
+                                                "of `%s'", path);
+                               return WIMLIB_ERR_NTFS_3G;
+                       }
+               #endif
+               }
+       }
+
+       root->inode->creation_time    = le64_to_cpu(ni->creation_time);
+       root->inode->last_write_time  = le64_to_cpu(ni->last_data_change_time);
+       root->inode->last_access_time = le64_to_cpu(ni->last_access_time);
+       root->inode->attributes       = le32_to_cpu(attributes);
+       root->inode->ino              = ni->mft_no;
+       root->inode->resolved         = true;
 
        if (attributes & FILE_ATTR_REPARSE_POINT) {
-               DEBUG("Reparse point `%s'", path);
                /* 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 (mrec_flags & MFT_RECORD_IS_DIRECTORY) {
-               DEBUG("Directory `%s'", path);
 
                /* Normal directory */
                s64 pos = 0;
@@ -476,12 +609,14 @@ static int __build_dentry_tree_ntfs(struct dentry **root_p, ntfs_inode *ni,
                        .sd_set       = sd_set,
                        .config       = config,
                        .ntfs_vol_p   = ntfs_vol_p,
+                       .flags        = flags,
                };
                ret = ntfs_readdir(ni, &pos, &ctx, wim_ntfs_capture_filldir);
-               if (ret != 0)
+               if (ret != 0) {
+                       ERROR_WITH_ERRNO("ntfs_readdir()");
                        ret = WIMLIB_ERR_NTFS_3G;
+               }
        } else {
-               DEBUG("Normal file `%s'", path);
                /* Normal file */
                ret = capture_ntfs_streams(root, ni, path, path_len,
                                           lookup_table, ntfs_vol_p,
@@ -490,15 +625,15 @@ static int __build_dentry_tree_ntfs(struct dentry **root_p, ntfs_inode *ni,
        if (ret != 0)
                return ret;
 
-       DEBUG("Getting security information from `%s'", path);
-       ret = ntfs_inode_get_security(ni,
+#ifdef HAVE_NTFS_INODE_FUNCTIONS
+       ret = ntfs_get_inode_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,
+       char sd[sd_size];
+       ret = ntfs_get_inode_security(ni,
                                      OWNER_SECURITY_INFORMATION |
                                      GROUP_SECURITY_INFORMATION |
                                      DACL_SECURITY_INFORMATION  |
@@ -511,7 +646,11 @@ static int __build_dentry_tree_ntfs(struct dentry **root_p, ntfs_inode *ni,
        } else {
                if (ret > 0) {
                        /*print_security_descriptor(sd, sd_size);*/
-                       root->security_id = sd_set_add_sd(sd_set, sd, sd_size);
+                       root->security_id = sd_set_add_sd(sd_set, sd, ret);
+                       if (root->security_id == -1) {
+                               ERROR("Out of memory");
+                               return WIMLIB_ERR_NOMEM;
+                       }
                        DEBUG("Added security ID = %u for `%s'",
                              root->security_id, path);
                } else { 
@@ -520,7 +659,36 @@ static int __build_dentry_tree_ntfs(struct dentry **root_p, ntfs_inode *ni,
                }
                ret = 0;
        }
-       *root_p = root;
+#else
+       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->inode->security_id = sd_set_add_sd(sd_set, sd, ret);
+               if (root->inode->security_id == -1) {
+                       ERROR("Out of memory");
+                       return WIMLIB_ERR_NOMEM;
+               }
+               DEBUG("Added security ID = %u for `%s'",
+                     root->inode->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->inode->security_id = -1;
+               DEBUG("No security ID for `%s'", path);
+       }
+#endif
        return ret;
 }
 
@@ -535,9 +703,10 @@ static int build_dentry_tree_ntfs(struct dentry **root_p,
        ntfs_volume *vol;
        ntfs_inode *root_ni;
        int ret = 0;
-       struct sd_set tree;
-       tree.sd = sd;
-       tree.root = NULL;
+       struct sd_set sd_set = {
+               .sd = sd,
+               .root = NULL,
+       };
        ntfs_volume **ntfs_vol_p = extra_arg;
 
        DEBUG("Mounting NTFS volume `%s' read-only", device);
@@ -548,7 +717,11 @@ static int build_dentry_tree_ntfs(struct dentry **root_p,
                                 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");
@@ -559,19 +732,38 @@ static int build_dentry_tree_ntfs(struct dentry **root_p,
                ret = WIMLIB_ERR_NTFS_3G;
                goto out;
        }
-       char path[4096];
+
+       /* Currently we assume that all the UTF-8 paths fit into this length and
+        * there is no check for overflow. */
+       char *path = MALLOC(32768);
+       if (!path) {
+               ERROR("Could not allocate memory for NTFS pathname");
+               goto out_cleanup;
+       }
+
        path[0] = '/';
        path[1] = '\0';
-       ret = __build_dentry_tree_ntfs(root_p, root_ni, path, 1,
-                                      lookup_table, &tree, config,
-                                      ntfs_vol_p);
+       ret = build_dentry_tree_ntfs_recursive(root_p, NULL, root_ni, path, 1,
+                                              FILE_NAME_POSIX, lookup_table,
+                                              &sd_set, config, ntfs_vol_p,
+                                              flags);
+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;
+       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 ret;
 }
@@ -581,8 +773,6 @@ out:
 WIMLIBAPI int wimlib_add_image_from_ntfs_volume(WIMStruct *w,
                                                const char *device,
                                                const char *name,
-                                               const char *description,
-                                               const char *flags_element,
                                                const char *config_str,
                                                size_t config_len,
                                                int flags)
@@ -591,20 +781,17 @@ WIMLIBAPI int wimlib_add_image_from_ntfs_volume(WIMStruct *w,
                ERROR("Cannot dereference files when capturing directly from NTFS");
                return WIMLIB_ERR_INVALID_PARAM;
        }
-       return do_add_image(w, device, name, description, flags_element,
-                           config_str, config_len, flags, build_dentry_tree_ntfs,
-                           &w->ntfs_vol);
+       return do_add_image(w, device, name, config_str, config_len, 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,
                                                const char *config_str,
-                                               size_t config_len)
+                                               size_t config_len,
+                                               int flags)
 {
        ERROR("wimlib was compiled without support for NTFS-3g, so");
        ERROR("we cannot capture a WIM image directly from a NTFS volume");