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Fix ext2/ext4 filesystem accesses beyond 2TiB

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With CONFIG_SYS_64BIT_LBA, lbaint_t gets defined as a 64-bit type,
which is required to represent block numbers for storage devices that
exceed 2TiB (the block size usually is 512B), e.g. recent hard drives

We now use lbaint_t for partition offset to reflect the lbaint_t change,
and access partitions beyond or crossing the 2.1TiB limit.
This required changes to signature of ext4fs_devread(), and type of all
variables relatives to block sector.

ext2/ext4 fs uses logical block represented by a 32 bit value. Logical
block is a multiple of device block sector. To avoid overflow problem
when calling ext4fs_devread(), we need to cast the sector parameter.

Signed-off-by: Frédéric Leroy <fredo@starox.org>
This commit is contained in:
Frederic Leroy 2013-06-26 18:11:25 +02:00 • committed by Tom Rini
parent 0eb33ad253
commit 04735e9c55
12 changed files with 93 additions and 70 deletions
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2
include/ext_common.h
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@ -180,7 +180,7 @@ struct ext2_data {
struct ext2fs_node diropen;
};
extern unsigned long part_offset;
extern lbaint_t part_offset;
int do_ext2ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
int do_ext2load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);