device-mapper-multipath/0066-UP-dos-4k-partition-fix.patch

---
 kpartx/dos.c    |   17 ++++++++++-------
 kpartx/gpt.c    |   20 +-------------------
 kpartx/kpartx.c |   12 ++++++++++++
 kpartx/kpartx.h |    8 ++++++++
 4 files changed, 31 insertions(+), 26 deletions(-)

Index: multipath-tools-130222/kpartx/dos.c
===================================================================
--- multipath-tools-130222.orig/kpartx/dos.c
+++ multipath-tools-130222/kpartx/dos.c
@@ -26,7 +26,9 @@ read_extended_partition(int fd, struct p
 	int moretodo = 1;
 	int i, n=0;
 
-	next = start = le32_to_cpu(ep->start_sect);
+	int sector_size_mul = get_sector_size(fd)/512;
+
+	next = start = sector_size_mul * le32_to_cpu(ep->start_sect);
 
 	while (moretodo) {
 		here = next;
@@ -45,14 +47,14 @@ read_extended_partition(int fd, struct p
 			memcpy(&p, bp + 0x1be + i * sizeof (p), sizeof (p));
 			if (is_extended(p.sys_type)) {
 				if (p.nr_sects && !moretodo) {
-					next = start + le32_to_cpu(p.start_sect);
+					next = start + sector_size_mul * le32_to_cpu(p.start_sect);
 					moretodo = 1;
 				}
 				continue;
 			}
 			if (n < ns) {
-				sp[n].start = here + le32_to_cpu(p.start_sect);
-				sp[n].size = le32_to_cpu(p.nr_sects);
+				sp[n].start = here + sector_size_mul * le32_to_cpu(p.start_sect);
+				sp[n].size = sector_size_mul * le32_to_cpu(p.nr_sects);
 				n++;
 			} else {
 				fprintf(stderr,
@@ -76,6 +78,7 @@ read_dos_pt(int fd, struct slice all, st
 	unsigned long offset = all.start;
 	int i, n=4;
 	unsigned char *bp;
+	int sector_size_mul = get_sector_size(fd)/512;
 
 	bp = (unsigned char *)getblock(fd, offset);
 	if (bp == NULL)
@@ -89,8 +92,8 @@ read_dos_pt(int fd, struct slice all, st
 		if (is_gpt(p.sys_type))
 			return 0;
 		if (i < ns) {
-			sp[i].start =  le32_to_cpu(p.start_sect);
-			sp[i].size = le32_to_cpu(p.nr_sects);
+			sp[i].start =  sector_size_mul * le32_to_cpu(p.start_sect);
+			sp[i].size = sector_size_mul * le32_to_cpu(p.nr_sects);
 		} else {
 			fprintf(stderr,
 				"dos_partition: too many slices\n");
@@ -99,7 +102,7 @@ read_dos_pt(int fd, struct slice all, st
 		if (is_extended(p.sys_type)) {
 			n += read_extended_partition(fd, &p, sp+n, ns-n);
 			/* hide the extended partition itself */
-			sp[i].size = 2;
+			sp[i].size = sector_size_mul * 2;
 		}
 	}
 	return n;
Index: multipath-tools-130222/kpartx/gpt.c
===================================================================
--- multipath-tools-130222.orig/kpartx/gpt.c
+++ multipath-tools-130222/kpartx/gpt.c
@@ -38,6 +38,7 @@
 #include <byteswap.h>
 #include <linux/fs.h>
 #include "crc32.h"
+#include "kpartx.h"
 
 #if BYTE_ORDER == LITTLE_ENDIAN
 #  define __le16_to_cpu(x) (x)
@@ -116,25 +117,6 @@ is_pmbr_valid(legacy_mbr *mbr)
 
 
 /************************************************************
- * get_sector_size
- * Requires:
- *  - filedes is an open file descriptor, suitable for reading
- * Modifies: nothing
- * Returns:
- *  sector size, or 512.
- ************************************************************/
-static int
-get_sector_size(int filedes)
-{
-	int rc, sector_size = 512;
-
-	rc = ioctl(filedes, BLKSSZGET, &sector_size);
-	if (rc)
-		sector_size = 512;
-	return sector_size;
-}
-
-/************************************************************
  * _get_num_sectors
  * Requires:
  *  - filedes is an open file descriptor, suitable for reading
Index: multipath-tools-130222/kpartx/kpartx.c
===================================================================
--- multipath-tools-130222.orig/kpartx/kpartx.c
+++ multipath-tools-130222/kpartx/kpartx.c
@@ -26,6 +26,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <stdint.h>
+#include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <ctype.h>
@@ -606,3 +607,14 @@ getblock (int fd, unsigned int secnr) {
 
 	return bp->block;
 }
+
+int
+get_sector_size(int filedes)
+{
+	int rc, sector_size = 512;
+
+	rc = ioctl(filedes, BLKSSZGET, &sector_size);
+	if (rc)
+		sector_size = 512;
+	return sector_size;
+}
Index: multipath-tools-130222/kpartx/kpartx.h
===================================================================
--- multipath-tools-130222.orig/kpartx/kpartx.h
+++ multipath-tools-130222/kpartx/kpartx.h
@@ -2,6 +2,7 @@
 #define _KPARTX_H
 
 #include <stdint.h>
+#include <sys/ioctl.h>
 
 /*
  * For each partition type there is a routine that takes
@@ -18,6 +19,13 @@
 #define safe_sprintf(var, format, args...)	\
 	snprintf(var, sizeof(var), format, ##args) >= sizeof(var)
 
+#ifndef BLKSSZGET
+#define BLKSSZGET  _IO(0x12,104)	/* get block device sector size */
+#endif
+
+int
+get_sector_size(int filedes);
+
 /*
  * units: 512 byte sectors
  */