From 04735e9c5578dd4f3584be5454b9779e8e5c2af9 Mon Sep 17 00:00:00 2001 From: Frederic Leroy Date: Wed, 26 Jun 2013 18:11:25 +0200 Subject: Fix ext2/ext4 filesystem accesses beyond 2TiB MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 --- include/ext4fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/ext4fs.h') diff --git a/include/ext4fs.h b/include/ext4fs.h index 379f7eb..2429380 100644 --- a/include/ext4fs.h +++ b/include/ext4fs.h @@ -135,7 +135,7 @@ int ext4fs_mount(unsigned part_length); void ext4fs_close(void); int ext4fs_ls(const char *dirname); void ext4fs_free_node(struct ext2fs_node *node, struct ext2fs_node *currroot); -int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf); +int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, char *buf); void ext4fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info); long int read_allocated_block(struct ext2_inode *inode, int fileblock); int ext4fs_probe(block_dev_desc_t *fs_dev_desc, -- cgit v1.1