ECRYPTFS_MAX_IV_BYTES
char extent_iv[ECRYPTFS_MAX_IV_BYTES];
char src[ECRYPTFS_MAX_IV_BYTES + 16];
unsigned char root_iv[ECRYPTFS_MAX_IV_BYTES];
char iv[ECRYPTFS_MAX_IV_BYTES];
char iv[ECRYPTFS_MAX_IV_BYTES];