sepolicy/hal_bootctl.te

# These are the permissions required to use the Boot Control HAL implemented
# here: hardware/qcom/bootctrl/boot_control.c

# Getting and setting GPT attributes for the bootloader iterates over all the
# partition names in the block_device directory /dev/block/.../by-name
allow hal_bootctl block_device:dir r_dir_perms;

# Get attributes on all the A/B partitions.
allow hal_bootctl {
  custom_ab_block_device
  xbl_block_device
  boot_block_device
  ssd_block_device
  modem_block_device
  system_block_device
}:blk_file { getattr };

# Edit the attributes stored in the GPT.
allow hal_bootctl gpt_block_device:blk_file rw_file_perms;

# Access /dev/sgN devices (generic SCSI) to write the
# A/B slot selection for the XBL partition. Allow also to issue a
# UFS_IOCTL_QUERY ioctl.
allow hal_bootctl sg_device:chr_file rw_file_perms;
allow hal_bootctl self:capability sys_admin;

# Read the sysfs to lookup what /dev/sgN device
# corresponds to the XBL partitions.
allow hal_bootctl sysfs_type:dir r_dir_perms;

# Write to the XBL devices.
allow hal_bootctl xbl_block_device:blk_file rw_file_perms;