This patch adds support for devices that have a FAT32 PBR.
Signed-off-by: Igor Luri iluri@aotek.es
---
disk/part_dos.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/disk/part_dos.c b/disk/part_dos.c
index 887b75e..d91f773 100644
--- a/disk/part_dos.c
+++ b/disk/part_dos.c
@@ -77,7 +77,8 @@ static int test_block_type(unsigned char *buffer)
(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
return (-1);
} /* no DOS Signature at all */
- if(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0)
+ if((strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0) ||
+ (strncmp((char
*)&buffer[DOS_PBR_FAT32_FSTYPE_OFFSET],"FAT32",5)==0) )
return DOS_PBR; /* is PBR */
return DOS_MBR; /* Is MBR */
}
--
1.5.4.3
---
disk/part_dos.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/disk/part_dos.h b/disk/part_dos.h
index ac93f20..6383c58 100644
--- a/disk/part_dos.h
+++ b/disk/part_dos.h
@@ -35,6 +35,7 @@
#define DOS_PART_TBL_OFFSET 0x1be
#define DOS_PART_MAGIC_OFFSET 0x1fe
#define DOS_PBR_FSTYPE_OFFSET 0x36
+#define DOS_PBR_FAT32_FSTYPE_OFFSET 0x52
#define DOS_PBR_MEDIA_TYPE_OFFSET 0x15
#define DOS_MBR 0
#define DOS_PBR 1
--
1.5.4.3
---
fs/fat/fat.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/fat/fat.c b/fs/fat/fat.c
index 2445f1e..4da4351 100644
--- a/fs/fat/fat.c
+++ b/fs/fat/fat.c
@@ -50,6 +50,7 @@ static int cur_part = 1;
#define DOS_PART_TBL_OFFSET 0x1be
#define DOS_PART_MAGIC_OFFSET 0x1fe
#define DOS_FS_TYPE_OFFSET 0x36
+#define DOS_FS_FAT32_TYPE_OFFSET 0x52
int disk_read (__u32 startblock, __u32 getsize, __u8 * bufptr)
{
@@ -94,7 +95,8 @@ fat_register_device(block_dev_desc_t *dev_desc, int
part_no)
if (!get_partition_info (dev_desc, part_no, &info)) {
part_offset = info.start;
cur_part = part_no;
- } else if (!strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET], "FAT", 3)) {
+ } else if (!strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET], "FAT", 3) ||
+ !strncmp((char *)&buffer[DOS_FS_FAT32_TYPE_OFFSET], "FAT32", 5))
{
/* ok, we assume we are on a PBR only */
cur_part = 1;
part_offset = 0;
@@ -105,7 +107,8 @@ fat_register_device(block_dev_desc_t *dev_desc, int
part_no)
}
#else
- if (!strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET],"FAT",3)) {
+ if (!strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET],"FAT",3) ||
+ !strncmp((char *)&buffer[DOS_FS_FAT32_TYPE_OFFSET], "FAT32", 5) ) {
/* ok, we assume we are on a PBR only */
cur_part = 1;
part_offset = 0;
--
1.5.4.3
--
Igor Luri
R&D Software Department
Fagor Aotek S. Coop.
P. O. Box 144
E-20500 Mondragón-Arrasate
Tel. ++34 943 71 92 00
++34 943 71 92 01 (Ext. 44268)
Fax. ++34 943 79 92 03
www.aotek.es
