You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

160 lines
4.5 KiB

---
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
*/