]> wimlib.net Git - wimlib/blobdiff - src/ntfs-apply.c
License and documentation
[wimlib] / src / ntfs-apply.c
index c4e09fe5e32712151c6092e5101bc1fdd082fb91..47e12c02db759cc05df6888e882f96316a3ac8ed 100644 (file)
@@ -1,9 +1,8 @@
 /*
  * ntfs-apply.c
  *
- * Apply a WIM image to a NTFS volume, restoring everything we can, including
- * security data and alternate data streams.  There should be no loss of
- * information.
+ * Apply a WIM image to a NTFS volume.  We restore everything we can, 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/.
  */
 
@@ -61,7 +60,7 @@ extract_wim_resource_to_ntfs_attr(const struct lookup_table_entry *lte,
                                  ntfs_attr *na)
 {
        u64 bytes_remaining = wim_resource_size(lte);
-       char buf[min(WIM_CHUNK_SIZE, bytes_remaining)];
+       u8 buf[min(WIM_CHUNK_SIZE, bytes_remaining)];
        u64 offset = 0;
        int ret = 0;
        u8 hash[SHA1_HASH_SIZE];
@@ -119,19 +118,38 @@ static int write_ntfs_data_streams(ntfs_inode *ni, const struct dentry *dentry,
                ntfs_attr *na;
 
                lte = dentry_stream_lte(dentry, stream_idx, w->lookup_table);
-               na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len);
-               if (!na) {
-                       ERROR_WITH_ERRNO("Failed to open a data stream of "
-                                        "extracted file `%s'",
-                                        dentry->full_path_utf8);
-                       ret = WIMLIB_ERR_NTFS_3G;
-                       break;
+
+               if (stream_name_len) {
+                       /* Create an empty named stream. */
+                       ret = ntfs_attr_add(ni, AT_DATA, stream_name,
+                                           stream_name_len, NULL, 0);
+                       if (ret != 0) {
+                               ERROR_WITH_ERRNO("Failed to create name data "
+                                                "stream for extracted file "
+                                                "`%s'",
+                                                dentry->full_path_utf8);
+                               ret = WIMLIB_ERR_NTFS_3G;
+                               break;
+
+                       }
                }
-               if (lte)
+               /* If there's no lookup table entry, it's an empty stream.
+                * Otherwise, we must open the attribute and extract the data.
+                * */
+               if (lte) {
+                       na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len);
+                       if (!na) {
+                               ERROR_WITH_ERRNO("Failed to open a data stream of "
+                                                "extracted file `%s'",
+                                                dentry->full_path_utf8);
+                               ret = WIMLIB_ERR_NTFS_3G;
+                               break;
+                       }
                        ret = extract_wim_resource_to_ntfs_attr(lte, na);
-               ntfs_attr_close(na);
-               if (ret != 0)
-                       break;
+                       if (ret != 0)
+                               break;
+                       ntfs_attr_close(na);
+               }
                if (stream_idx == dentry->num_ads)
                        break;
                stream_name = (ntfschar*)dentry->ads_entries[stream_idx].stream_name;
@@ -156,21 +174,51 @@ static int wim_apply_hardlink_ntfs(const struct dentry *from_dentry,
                                   ntfs_inode **to_ni_ret)
 {
        int ret;
+       char *p;
+       char orig;
+       const char *dir_name;
+
        ntfs_inode *to_ni;
+       ntfs_volume *vol;
 
        wimlib_assert(dentry_is_regular_file(from_dentry)
                        && dentry_is_regular_file(to_dentry));
 
+       if (ntfs_inode_close(dir_ni) != 0) {
+               ERROR_WITH_ERRNO("Error closing directory");
+               return WIMLIB_ERR_NTFS_3G;
+       }
+
+       vol = dir_ni->vol;
+
        DEBUG("Extracting NTFS hard link `%s' => `%s'",
              from_dentry->full_path_utf8, to_dentry->extracted_file);
 
-       to_ni = ntfs_pathname_to_inode(dir_ni->vol, NULL,
+       to_ni = ntfs_pathname_to_inode(vol, NULL,
                                       to_dentry->extracted_file);
        if (!to_ni) {
                ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
                                 to_dentry->extracted_file);
                return WIMLIB_ERR_NTFS_3G;
        }
+       p = from_dentry->full_path_utf8 + from_dentry->full_path_utf8_len;
+       do {
+               p--;
+       } while (*p != '/');
+
+       orig = *p;
+       *p = '\0';
+       dir_name = from_dentry->full_path_utf8;
+
+       dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
+       if (!dir_ni) {
+               ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
+                                from_dentry->full_path_utf8);
+               *p = orig;
+               return WIMLIB_ERR_NTFS_3G;
+       }
+       *p = orig;
+
        ret = ntfs_link(to_ni, dir_ni,
                        (ntfschar*)from_dentry->file_name,
                        from_dentry->file_name_len / 2);
@@ -210,7 +258,7 @@ apply_file_attributes_and_security_data(ntfs_inode *ni,
                                SACL_SECURITY_INFORMATION;
                                
                if (!ntfs_inode_set_security(ni, selection,
-                                            sd->descriptors[dentry->security_id]))
+                                            (const char*)sd->descriptors[dentry->security_id]))
                {
                        ERROR_WITH_ERRNO("Failed to set security data on `%s'",
                                        dentry->full_path_utf8);
@@ -228,7 +276,7 @@ static int apply_reparse_data(ntfs_inode *ni, const struct dentry *dentry,
 
        wimlib_assert(dentry->attributes & FILE_ATTRIBUTE_REPARSE_POINT);
 
-       lte = dentry_first_lte(dentry, w->lookup_table);
+       lte = dentry_unnamed_lte(dentry, w->lookup_table);
 
        DEBUG("Applying reparse data to `%s'", dentry->full_path_utf8);
 
@@ -244,8 +292,8 @@ static int apply_reparse_data(ntfs_inode *ni, const struct dentry *dentry,
                return WIMLIB_ERR_INVALID_DENTRY;
        }
 
-       char reparse_data_buf[8 + wim_resource_size(lte)];
-       char *p = reparse_data_buf;
+       u8 reparse_data_buf[8 + wim_resource_size(lte)];
+       u8 *p = reparse_data_buf;
        p = put_u32(p, dentry->reparse_tag); /* ReparseTag */
        p = put_u16(p, wim_resource_size(lte)); /* ReparseDataLength */
        p = put_u16(p, 0); /* Reserved */
@@ -254,7 +302,7 @@ static int apply_reparse_data(ntfs_inode *ni, const struct dentry *dentry,
        if (ret != 0)
                return ret;
 
-       ret = ntfs_set_ntfs_reparse_data(ni, reparse_data_buf,
+       ret = ntfs_set_ntfs_reparse_data(ni, (char*)reparse_data_buf,
                                         wim_resource_size(lte) + 8, 0);
        if (ret != 0) {
                ERROR_WITH_ERRNO("Failed to set NTFS reparse data on `%s'",
@@ -503,7 +551,6 @@ out_close_dir_ni:
                        ret = WIMLIB_ERR_NTFS_3G;
                ERROR_WITH_ERRNO("Failed to close directory inode");
        }
-out_close_ni:
        if (ni && ntfs_inode_close(ni) != 0) {
                if (ret == 0)
                        ret = WIMLIB_ERR_NTFS_3G;
@@ -542,10 +589,8 @@ static int wim_apply_dentry_ntfs(struct dentry *dentry, void *arg)
        int extract_flags            = args->extract_flags;
        WIMStruct *w                 = args->w;
        ntfs_inode *dir_ni;
-       int ret;
        char *p;
        char orig;
-       ntfs_inode *close_after_dir;
        const char *dir_name;
 
        if (dentry->extracted_file)
@@ -586,10 +631,8 @@ static int wim_apply_dentry_timestamps(struct dentry *dentry, void *arg)
 {
        struct ntfs_apply_args *args = arg;
        ntfs_volume *vol             = args->vol;
-       int extract_flags            = args->extract_flags;
-       WIMStruct *w                 = args->w;
-       char *p;
-       char buf[24];
+       u8 *p;
+       u8 buf[24];
        ntfs_inode *ni;
        int ret = 0;
 
@@ -607,7 +650,7 @@ static int wim_apply_dentry_timestamps(struct dentry *dentry, void *arg)
        p = put_u64(p, dentry->creation_time);
        p = put_u64(p, dentry->last_write_time);
        p = put_u64(p, dentry->last_access_time);
-       ret = ntfs_inode_set_times(ni, buf, 3 * sizeof(u64), 0);
+       ret = ntfs_inode_set_times(ni, (const char*)buf, 3 * sizeof(u64), 0);
        if (ret != 0) {
                ERROR_WITH_ERRNO("Failed to set NTFS timestamps on `%s'",
                                 dentry->full_path_utf8);
@@ -644,10 +687,18 @@ static int do_wim_apply_image_ntfs(WIMStruct *w, const char *device, int extract
 
        if (ret != 0)
                goto out;
-       DEBUG("Setting NTFS timestamps");
+       if (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE)
+               printf("Setting timestamps of extracted files on NTFS "
+                      "volume `%s'\n", device);
        ret = for_dentry_in_tree_depth(wim_root_dentry(w),
                                       wim_apply_dentry_timestamps,
                                       &args);
+       if (ret == 0 && (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE))
+               printf("Finished applying image %d of %s to NTFS "
+                      "volume `%s'\n",
+                      w->current_image,
+                      w->filename ? w->filename : "WIM",
+                      device);
 out:
        DEBUG("Unmounting NTFS volume `%s'", device);
        if (ntfs_umount(vol, FALSE) != 0) {
@@ -687,16 +738,6 @@ WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
        if (ret != 0)
                return ret;
 
-#if 0
-       if (getuid() != 0) {
-               ERROR("We are not root, but NTFS-3g requires root privileges to set arbitrary");
-               ERROR("security data on the NTFS filesystem.  Please run this program as root");
-               ERROR("if you want to extract a WIM image while preserving NTFS-specific");
-               ERROR("information.");
-
-               return WIMLIB_ERR_NOT_ROOT;
-       }
-#endif
        return do_wim_apply_image_ntfs(w, device, flags);
 }