get_total_and_used_bytes calculation causes size_t overflow for large SD cards

[HY-PARK]

Problem Description:

I am encountering an issue when using esp_littlefs to mount and interact with a 16GB SDHC card (SD16G). Specifically, the total_bytes calculation within the get_total_and_used_bytes results in a size_t overflow when performing the sector_size * capacity operation.

16GB SDHC card with the following characteristics:
Name: SD16G
Type: SDHC
Speed: 20.00 MHz (limit: 20.00 MHz)
Size: 14792MB
CSD: ver=2, sector_size=512, capacity=30294016 read_bl_len=9

Expected Behavior:

The littlefs_get_total_bytes function should accurately return the total capacity of the SD card (approximately 14.7GB).

[BrianPugh]

Thanks for opening this issue. Seems like all of the APIs would need to be updated to use uint64_t to handle these larger partitions.