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53cc4332b3
Use lbaint_t for blknr to avoid overflow in ext4fs_read_file(). Background: blknr (block number) used in ext4fs_read_file() could be increased to a very large value and causes a wrap around at 32 bit signed integer max, thus becomes negative. This results in an out-of-normal range for sector number (during the assignment delayed_start = blknr) where delayed_start sector is typed uint64 lbaint_t. This causes the "Read outside partition" error. Looks like we also have this overflown problem in ext4_write.c that needs to be addressed. This patch was tested on the Synology DS116 (Armada 385) board, and a 4TB Seagate HDD. Signed-off-by: Tony Dinh <mibodhi@gmail.com>