legacy/vendor/common/hal_bootctl.te

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# 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 { open read search };

# Allow boot_control_hal to get attributes on all the A/B partitions.
allow hal_bootctl {
  custom_ab_block_device
  xbl_block_device
  boot_block_device
  ssd_device
  modem_block_device
  system_block_device
  recovery_block_device
  mdtp_device
}:blk_file { getattr };

# Allow the boot_control_hal to edit the attributes stored in the GPT.
allow hal_bootctl gpt_block_device:blk_file rw_file_perms;
allow hal_bootctl root_block_device:blk_file rw_file_perms;

# Allow boot_control_hal to 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;

# The sys_rawio denial message is benign, and shows up due to a capability()
# call made by the scsi driver to check for CAP_SYS_RAWIO. Not having this
# does not result in a error
dontaudit hal_bootctl self:capability sys_rawio;

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

# Allow boot_control_hal to write to the XBL devices.
allow hal_bootctl xbl_block_device:blk_file rw_file_perms;

# Read dir permission for dt_firmware
allow hal_bootctl sysfs_dt_firmware_android:dir r_dir_perms;