File ntfs-3g_ntfsprogs-use-caution-with-fastboot.patch of Package ntfs-3g_ntfsprogs

From 4d0b9163c9ef1f0cdbbf533317b291220c7fd1c7 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jean-Pierre=20Andr=C3=A9?= <jpandre@users.sourceforge.net>
Date: Wed, 12 Sep 2012 09:42:24 +0200
Subject: [PATCH] Accepted processing restart pages v 2.0 with no warning (used by Windows 8)

In the $LogFile, Windows 8 defines restart pages with version 2.0.
The checks designed for version 1.1 appear to apply, so accept v 2.0
and apply the usual checks.
---
 libntfs-3g/logfile.c |   15 +++++++++------
 1 files changed, 9 insertions(+), 6 deletions(-)

Index: ntfs-3g_ntfsprogs-2012.1.15/libntfs-3g/logfile.c
===================================================================
--- ntfs-3g_ntfsprogs-2012.1.15.orig/libntfs-3g/logfile.c
+++ ntfs-3g_ntfsprogs-2012.1.15/libntfs-3g/logfile.c
@@ -84,13 +84,21 @@ static BOOL ntfs_check_restart_page_head
 				"position in $LogFile.\n");
 		return FALSE;
 	}
-	/* We only know how to handle version 1.1. */
-	if (sle16_to_cpu(rp->major_ver) != 1 ||
-			sle16_to_cpu(rp->minor_ver) != 1) {
+	/*
+	 * We only know how to handle version 1.1 and 2.0, though
+	 * version 2.0 is probably related to cached metadata in
+	 * Windows 8, and we will refuse to mount.
+	 * Nevertheless, do all the relevant checks before rejecting.
+	 */
+	if (((rp->major_ver != const_cpu_to_le16(1))
+			 || (rp->minor_ver != const_cpu_to_le16(1)))
+	   && ((rp->major_ver != const_cpu_to_le16(2))
+			 || (rp->minor_ver != const_cpu_to_le16(0)))) {
 		ntfs_log_error("$LogFile version %i.%i is not "
-				"supported.  (This driver supports version "
-				"1.1 only.)\n", (int)sle16_to_cpu(rp->major_ver),
-				(int)sle16_to_cpu(rp->minor_ver));
+				"supported.\n   (This driver supports version "
+				"1.1 and 2.0 only.)\n",
+					(int)sle16_to_cpu(rp->major_ver),
+					(int)sle16_to_cpu(rp->minor_ver));
 		return FALSE;
 	}
 	/*
Index: ntfs-3g_ntfsprogs-2012.1.15/libntfs-3g/volume.c
===================================================================
--- ntfs-3g_ntfsprogs-2012.1.15.orig/libntfs-3g/volume.c
+++ ntfs-3g_ntfsprogs-2012.1.15/libntfs-3g/volume.c
@@ -89,13 +89,9 @@ static const char *corrupt_volume_msg =
 "for more details.\n";
 
 static const char *hibernated_volume_msg =
-"The NTFS partition is hibernated. Please resume and shutdown Windows\n"
-"properly, or mount the volume read-only with the 'ro' mount option, or\n"
-"mount the volume read-write with the 'remove_hiberfile' mount option.\n"
-"For example type on the command line:\n"
-"\n"
-"            mount -t ntfs-3g -o remove_hiberfile %s %s\n"
-"\n";
+"The NTFS partition is in an unsafe state. Please resume and shutdown\n"
+"Windows fully (no hibernation or fast restarting), or mount the volume\n"
+"read-only with the 'ro' mount option.\n";
 
 static const char *unclean_journal_msg =
 "Write access is denied because the disk wasn't safely powered\n"
@@ -649,6 +645,24 @@ static int ntfs_volume_check_logfile(ntf
 	
 	if (!ntfs_check_logfile(na, &rp) || !ntfs_is_logfile_clean(na, rp))
 		err = EOPNOTSUPP;
+		/*
+		 * If the latest restart page was identified as version
+		 * 2.0, then Windows may have kept a cached copy of
+		 * metadata for fast restarting, and we should not mount.
+		 * Hibernation will be seen the same way on a non
+		 * Windows-system partition, so we have to use the same
+		 * error code (EPERM).
+		 * The restart page may also be identified as version 2.0
+		 * when access to the file system is terminated abruptly
+		 * by unplugging or power cut, so mounting is also rejected
+		 * after such an event.
+		 */
+	if (rp
+	    && (rp->major_ver == const_cpu_to_le16(2))
+	    && (rp->minor_ver == const_cpu_to_le16(0))) {
+		ntfs_log_error("Metadata kept in Windows cache, refused to mount.\n");
+		err = EPERM;
+	}
 	free(rp);
 	ntfs_attr_close(na);
 out:	
@@ -1200,7 +1214,8 @@ ntfs_volume *ntfs_device_mount(struct nt
 		    ntfs_volume_check_hiberfile(vol, 1) < 0)
 			goto error_exit;
 		if (ntfs_volume_check_logfile(vol) < 0) {
-			if (!(flags & MS_RECOVER))
+			/* Always reject cached metadata for now */
+			if (!(flags & MS_RECOVER) || (errno == EPERM))
 				goto error_exit;
 			ntfs_log_info("The file system wasn't safely "
 				      "closed on Windows. Fixing.\n");
@@ -1642,6 +1657,10 @@ int ntfs_volume_error(int err)
 			ret = NTFS_VOLUME_CORRUPT;
 			break;
 		case EPERM:
+			/*
+			 * Hibernation and fast restarting are seen the
+			 * same way on a non Windows-system partition.
+			 */
 			ret = NTFS_VOLUME_HIBERNATED;
 			break;
 		case EOPNOTSUPP:
Index: ntfs-3g_ntfsprogs-2012.1.15/src/ntfs-3g.8.in
===================================================================
--- ntfs-3g_ntfsprogs-2012.1.15.orig/src/ntfs-3g.8.in
+++ ntfs-3g_ntfsprogs-2012.1.15/src/ntfs-3g.8.in
@@ -36,6 +36,22 @@ a few differences mentioned below in rel
 .PP
 The \fIvolume\fR to be mounted can be either a block device or 
 an image file.
+.SS Windows hibernation and fast restarting
+On computers which can be dual-booted into Windows or Linux, Windows has
+to be fully shut down before booting into Linux, otherwise the NTFS file
+systems on internal disks may be left in an inconsistent state and changes
+made by Linux may be ignored by Windows.
+.P
+So, Windows may not be left in hibernation when starting Linux, in order
+to avoid inconsistencies. Moreover, the fast restart feature available on
+recent Windows systems has to be disabled. This can be achieved by issuing
+as an Administrator the Windows command which disables both
+hibernation and fast restarting :
+.RS
+.sp
+powercfg /h off
+.sp
+.RE
 .SS Access Handling and Security
 By default, files and directories are owned by the effective 
 user and group of the mounting process, and everybody has
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