ntfs_apply_dentry() (IN PROGRESS)
authorEric Biggers <ebiggers3@gmail.com>
Tue, 21 Aug 2012 05:11:47 +0000 (00:11 -0500)
committerEric Biggers <ebiggers3@gmail.com>
Tue, 21 Aug 2012 05:11:47 +0000 (00:11 -0500)
Makefile.am
src/extract.c
src/ntfs.c [new file with mode: 0644]

index 727d8b6..c77b058 100644 (file)
@@ -31,6 +31,7 @@ libwim_la_SOURCES =           \
        src/lzx.h               \
        src/modify.c            \
        src/mount.c             \
+       src/ntfs.c              \
        src/resource.c          \
        src/security.c          \
        src/security.h          \
index da637d2..c3b92b0 100644 (file)
 #include "wimlib_internal.h"
 #include "xml.h"
 
-#ifdef WITH_NTFS_3G
-#include <ntfs-3g/volume.h>
-#include <ntfs-3g/security.h>
-#endif
-
-
 /* Internal */
 #define WIMLIB_EXTRACT_FLAG_MULTI_IMAGE 0x80000000
 
@@ -443,40 +437,3 @@ WIMLIBAPI int wimlib_extract_image(WIMStruct *w, int image,
        }
 
 }
-
-WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
-                                               const char *device, int flags)
-{
-#ifdef WITH_NTFS_3G
-       int ret;
-
-       if (!device)
-               return WIMLIB_ERR_INVALID_PARAM;
-       if (image == WIM_ALL_IMAGES) {
-               ERROR("Can only apply a single image when applying "
-                     "directly to a NTFS volume");
-               return WIMLIB_ERR_INVALID_PARAM;
-       }
-       if (flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) {
-               ERROR("Cannot specifcy symlink or hardlink flags when applying ");
-               ERROR("directly to a NTFS volume");
-               return WIMLIB_ERR_INVALID_PARAM;
-       }
-       ret = wimlib_select_image(w, image);
-       if (ret != 0)
-               return ret;
-
-       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;
-       }
-#else /* WITH_NTFS_3G */
-       ERROR("wimlib was compiled without support for NTFS-3g, so");
-       ERROR("we cannot apply a WIM image directly to a NTFS volume");
-       return WIMLIB_ERR_UNSUPPORTED;
-#endif /* !WITH_NTFS_3G */
-}
diff --git a/src/ntfs.c b/src/ntfs.c
new file mode 100644 (file)
index 0000000..fa3607c
--- /dev/null
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2012 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)
+ * 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
+ * details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with wimlib; if not, see http://www.gnu.org/licenses/.
+ */
+
+#include "config.h"
+#include "wimlib_internal.h"
+
+#ifdef WITH_NTFS_3G
+#include "dentry.h"
+#include <ntfs-3g/volume.h>
+#include <ntfs-3g/security.h>
+#include <unistd.h>
+
+struct ntfs_apply_args {
+       struct SECURITY_API *scapi;
+       ntfs_volume *vol;
+       const struct wim_security_data *sd;
+       int flags;
+       struct ntfs_inode *parent;
+};
+
+static int ntfs_apply_dentry(struct dentry *dentry, void *arg)
+{
+       struct ntfs_apply_args *args       = arg;
+       struct SECURITY_API *scapi         = args->scapi;
+       ntfs_volume *vol                   = args->vol;
+       const struct wim_security_data *sd = args->sd;
+       int flags                          = args->flags;
+       int ret = 0;
+       ntfs_inode *dir_ni, *ni;
+
+       if (dentry_is_root(dentry))
+               return 0;
+
+       if (flags & WIMLIB_EXTRACT_FLAG_VERBOSE) {
+               wimlib_assert(dentry->full_path_utf8);
+               puts(dentry->full_path_utf8);
+       }
+
+       char *p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
+       do {
+               p--;
+       } while (*p != '/');
+       char orig = *p;
+       *p = '\0';
+       const char *dir_name = dentry->full_path_utf8;
+
+       dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
+       if (!dir_ni) {
+               ret = WIMLIB_ERR_NTFS_3G;
+               ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
+                                dir_name);
+               goto out;
+       }
+
+       ret = 0;
+       if (dentry_is_regular_file(dentry)) {
+               ni = ntfs_create(dir_ni, 0, (ntfschar*)dentry->file_name,
+                                dentry->file_name_len, S_IFREG);
+       } else if (dentry_is_directory(dentry)) {
+               ni = ntfs_create(dir_ni, 0, (ntfschar*)dentry->file_name,
+                                dentry->file_name_len, S_IFDIR);
+       } else {
+               goto out;
+       }
+       if (!ni) {
+               ERROR_WITH_ERRNO("Could not create NTFS object for `%s'",
+                                dentry->full_path_utf8);
+               ret = WIMLIB_ERR_NTFS_3G;
+               goto out;
+       }
+out:
+       *p = orig;
+       return ret;
+}
+
+static int do_ntfs_apply(WIMStruct *w, const char *device, int flags)
+{
+       struct SECURITY_API *scapi;
+       
+       scapi = ntfs_initialize_file_security(device, 0);
+       if (!scapi) {
+               ERROR_WITH_ERRNO("Failed to initialize NTFS file security API "
+                                "on NTFS volume `%s'", device);
+       }
+       struct ntfs_apply_args args = {
+               .scapi = scapi,
+               .vol = scapi->security.vol,
+               .sd = wim_security_data(w),
+               .flags = flags,
+       };
+       return for_dentry_in_tree(wim_root_dentry(w), ntfs_apply_dentry,
+                                 &args);
+}
+
+WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
+                                               const char *device, int flags)
+{
+       int ret;
+
+       if (!device)
+               return WIMLIB_ERR_INVALID_PARAM;
+       if (image == WIM_ALL_IMAGES) {
+               ERROR("Can only apply a single image when applying "
+                     "directly to a NTFS volume");
+               return WIMLIB_ERR_INVALID_PARAM;
+       }
+       if (flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) {
+               ERROR("Cannot specifcy symlink or hardlink flags when applying ");
+               ERROR("directly to a NTFS volume");
+               return WIMLIB_ERR_INVALID_PARAM;
+       }
+       ret = wimlib_select_image(w, image);
+       if (ret != 0)
+               return ret;
+
+       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;
+       }
+       return do_ntfs_apply(w, device, flags);
+}
+
+#else /* WITH_NTFS_3G */
+WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
+                                               const char *device, int flags)
+{
+       ERROR("wimlib was compiled without support for NTFS-3g, so");
+       ERROR("we cannot apply a WIM image directly to a NTFS volume");
+       return WIMLIB_ERR_UNSUPPORTED;
+}
+#endif /* WITH_NTFS_3G */