Attachment 1441538 Details for Bug 1582491 – Proposed patch to libblkid/src/superblocks/ntfs.c for big ntfs clusters

[patch] Proposed patch to libblkid/src/superblocks/ntfs.c for big ntfs clusters

ntfs.c.patch (text/plain), 1.06 KB, created by Jean-Pierre André on 2018-05-25 12:05:51 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Jean-Pierre André

Created: 2018-05-25 12:05:51 UTC

Size: 1.06 KB

patch

obsolete

>--- ntfs.c.ref	2018-05-25 12:00:22.937792800 +0200
>+++ ntfs.c	2018-05-25 12:12:55.919038000 +0200
>@@ -72,7 +72,8 @@
> } __attribute__((__packed__));
> 
> #define MFT_RECORD_VOLUME	3
>-#define NTFS_MAX_CLUSTER_SIZE	(64 * 1024)
>+/* Windows 10 Creators edition has extended the cluster size limit to 2MB */
>+#define NTFS_MAX_CLUSTER_SIZE	(2 * 1024 * 1024)
> 
> enum {
> 	MFT_RECORD_ATTR_VOLUME_NAME		= 0x60,
>@@ -97,16 +98,19 @@
> 	 * Check bios parameters block
> 	 */
> 	sector_size = le16_to_cpu(ns->bpb.sector_size);
>-	sectors_per_cluster = ns->bpb.sectors_per_cluster;
> 
> 	if (sector_size < 256 || sector_size > 4096)
> 		return 1;
> 
>-	switch (sectors_per_cluster) {
>+	switch (ns->bpb.sectors_per_cluster) {
> 	case 1: case 2: case 4: case 8: case 16: case 32: case 64: case 128:
>+		sectors_per_cluster = ns->bpb.sectors_per_cluster;
> 		break;
> 	default:
>-		return 1;
>+		if ((ns->bpb.sectors_per_cluster < 240)
>+		    || (ns->bpb.sectors_per_cluster > 249))
>+			return 1;
>+		sectors_per_cluster = 1 << (256 - ns->bpb.sectors_per_cluster);
> 	}
> 
> 	if ((uint16_t) le16_to_cpu(ns->bpb.sector_size) *

Actions: View | Diff

Attachments on bug 1582491: 1441538 | 1441640