Multiple block device support

[GigabyteProductions]

Google Pixel XL uses more than one base block device (multiple sd*, not partition devices).

$ adb -d shell 'ls -l /dev/block/bootdevice/by-name'
__bionic_open_tzdata: couldn't find any tzdata when looking for GMT!
lrwxrwxrwx    1 root     root            16 Jan  3  1970 aboot_a -> /dev/block/sda17
lrwxrwxrwx    1 root     root            16 Jan  3  1970 aboot_b -> /dev/block/sda18
lrwxrwxrwx    1 root     root            16 Jan  3  1970 apdp_a -> /dev/block/sda29
lrwxrwxrwx    1 root     root            16 Jan  3  1970 apdp_b -> /dev/block/sda30
lrwxrwxrwx    1 root     root            15 Jan  3  1970 board_info -> /dev/block/sdf1
lrwxrwxrwx    1 root     root            16 Jan  3  1970 boot_a -> /dev/block/sda19
lrwxrwxrwx    1 root     root            16 Jan  3  1970 boot_b -> /dev/block/sda20
lrwxrwxrwx    1 root     root            15 Jan  3  1970 bootlocker_a -> /dev/block/sda1
lrwxrwxrwx    1 root     root            15 Jan  3  1970 bootlocker_b -> /dev/block/sda2
lrwxrwxrwx    1 root     root            16 Jan  3  1970 cdt -> /dev/block/sdd12
lrwxrwxrwx    1 root     root            16 Jan  3  1970 cmnlib32_a -> /dev/block/sda13
lrwxrwxrwx    1 root     root            16 Jan  3  1970 cmnlib32_b -> /dev/block/sda14
lrwxrwxrwx    1 root     root            16 Jan  3  1970 cmnlib64_a -> /dev/block/sda15
lrwxrwxrwx    1 root     root            16 Jan  3  1970 cmnlib64_b -> /dev/block/sda16
lrwxrwxrwx    1 root     root            16 Jan  3  1970 ddr -> /dev/block/sdd11
lrwxrwxrwx    1 root     root            16 Jan  3  1970 devcfg_a -> /dev/block/sda23
lrwxrwxrwx    1 root     root            16 Jan  3  1970 devcfg_b -> /dev/block/sda24
lrwxrwxrwx    1 root     root            15 Jan  3  1970 devinfo -> /dev/block/sdf4
lrwxrwxrwx    1 root     root            15 Jan  3  1970 devinfobak -> /dev/block/sdd5
lrwxrwxrwx    1 root     root            15 Jan  3  1970 dip -> /dev/block/sdd7
lrwxrwxrwx    1 root     root            15 Jan  3  1970 dpo -> /dev/block/sdd6
lrwxrwxrwx    1 root     root            15 Jan  3  1970 frp -> /dev/block/sde1
lrwxrwxrwx    1 root     root            15 Jan  3  1970 fsc -> /dev/block/sdd8
lrwxrwxrwx    1 root     root            15 Jan  3  1970 fsg -> /dev/block/sdf3
lrwxrwxrwx    1 root     root            16 Jan  3  1970 hosd_a -> /dev/block/sda21
lrwxrwxrwx    1 root     root            16 Jan  3  1970 hosd_b -> /dev/block/sda22
lrwxrwxrwx    1 root     root            16 Jan  3  1970 hyp_a -> /dev/block/sda11
lrwxrwxrwx    1 root     root            16 Jan  3  1970 hyp_b -> /dev/block/sda12
lrwxrwxrwx    1 root     root            15 Jan  3  1970 keymaster_a -> /dev/block/sda3
lrwxrwxrwx    1 root     root            15 Jan  3  1970 keymaster_b -> /dev/block/sda4
lrwxrwxrwx    1 root     root            15 Jan  3  1970 metadata -> /dev/block/sde5
lrwxrwxrwx    1 root     root            15 Jan  3  1970 mfg -> /dev/block/sdf2
lrwxrwxrwx    1 root     root            15 Jan  3  1970 misc -> /dev/block/sdd1
lrwxrwxrwx    1 root     root            16 Jan  3  1970 modem_a -> /dev/block/sda25
lrwxrwxrwx    1 root     root            16 Jan  3  1970 modem_b -> /dev/block/sda26
lrwxrwxrwx    1 root     root            15 Jan  3  1970 modemst1 -> /dev/block/sdd9
lrwxrwxrwx    1 root     root            16 Jan  3  1970 modemst2 -> /dev/block/sdd10
lrwxrwxrwx    1 root     root            16 Jan  3  1970 msadp_a -> /dev/block/sda27
lrwxrwxrwx    1 root     root            16 Jan  3  1970 msadp_b -> /dev/block/sda28
lrwxrwxrwx    1 root     root            15 Jan  3  1970 persist -> /dev/block/sdd3
lrwxrwxrwx    1 root     root            15 Jan  3  1970 pg1fs -> /dev/block/sde3
lrwxrwxrwx    1 root     root            15 Jan  3  1970 pg2fs -> /dev/block/sde4
lrwxrwxrwx    1 root     root            15 Jan  3  1970 pmic_a -> /dev/block/sda9
lrwxrwxrwx    1 root     root            16 Jan  3  1970 pmic_b -> /dev/block/sda10
lrwxrwxrwx    1 root     root            15 Jan  3  1970 ramdump -> /dev/block/sde2
lrwxrwxrwx    1 root     root            16 Jan  3  1970 reserve0 -> /dev/block/sda36
lrwxrwxrwx    1 root     root            16 Jan  3  1970 reserve3 -> /dev/block/sdd13
lrwxrwxrwx    1 root     root            15 Jan  3  1970 reserve4 -> /dev/block/sde6
lrwxrwxrwx    1 root     root            15 Jan  3  1970 reserve5 -> /dev/block/sdf5
lrwxrwxrwx    1 root     root            15 Jan  3  1970 rpm_a -> /dev/block/sda7
lrwxrwxrwx    1 root     root            15 Jan  3  1970 rpm_b -> /dev/block/sda8
lrwxrwxrwx    1 root     root            15 Jan  3  1970 sec -> /dev/block/sdd4
lrwxrwxrwx    1 root     root            15 Jan  3  1970 ssd -> /dev/block/sdd2
lrwxrwxrwx    1 root     root            16 Jan  3  1970 system_a -> /dev/block/sda33
lrwxrwxrwx    1 root     root            16 Jan  3  1970 system_b -> /dev/block/sda34
lrwxrwxrwx    1 root     root            15 Jan  3  1970 tz_a -> /dev/block/sda5
lrwxrwxrwx    1 root     root            15 Jan  3  1970 tz_b -> /dev/block/sda6
lrwxrwxrwx    1 root     root            16 Jan  3  1970 userdata -> /dev/block/sda35
lrwxrwxrwx    1 root     root            16 Jan  3  1970 vendor_a -> /dev/block/sda31
lrwxrwxrwx    1 root     root            16 Jan  3  1970 vendor_b -> /dev/block/sda32
lrwxrwxrwx    1 root     root            15 Jan  3  1970 xbl_a -> /dev/block/sdb1
lrwxrwxrwx    1 root     root            15 Jan  3  1970 xbl_b -> /dev/block/sdc1

[dlenski]

I already implemented support for multiple mmcblk* devices (see #33 for an example of this in action).

Patches to list and identify the available for devices like this one are welcome!

[GigabyteProductions]

I will test when I get a moment. I guess I assumed there was no support because of the still-hardcoded mmcblk0, and because I was only seeing the hard-coded device in the partition printout.