vold: fix 64 bit ioctl error

Changing the num_sectors used in ioctl with BLKGETSIZE because
the kernel expects an unsigned long type and then changes 64 bits
with a 64 bits userspace. This overwrites what's located close to
the parameter location if any.

Change-Id: I78fd61a1084de2741f39b926aa436462518709a0
Signed-off-by: Mateusz Nowak <[email protected]>
Signed-off-by: Zhiquan Liu <[email protected]>
11 files changed