generic/vendor/common/hal_bootctl.te

# Copyright (c) 2018, The Linux Foundation. All rights reserved.
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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 r_dir_perms;

#Opening /dev directory from bootctl to query /dev/ufs-bsg* filename
allow hal_bootctl device:dir r_dir_perms;
# Edit the attributes stored in the GPT.
allow hal_bootctl vendor_gpt_block_device:blk_file rw_file_perms;
allow hal_bootctl root_block_device:blk_file rw_file_perms;

# Allow boot_control_hal to get attributes on all the A/B partitions.
allow hal_bootctl boot_block_device:blk_file rw_file_perms;
allow hal_bootctl vendor_ab_block_device:blk_file getattr;
allow hal_bootctl vendor_xbl_block_device:blk_file getattr;
allow hal_bootctl vendor_modem_block_device:blk_file getattr;
allow hal_bootctl system_block_device:blk_file getattr;
allow hal_bootctl vendor_custom_ab_block_device:blk_file getattr;
allow hal_bootctl vendor_ab_block_device:blk_file getattr;
allow hal_bootctl recovery_block_device:blk_file getattr;
allow hal_bootctl vendor_mdtp_device:blk_file getattr;
allow hal_bootctl_server misc_block_device:blk_file rw_file_perms;

# Access /dev/sgN or /dev/ufs-bsg* devices (generic SCSI) to write the
# A/B slot selection for the XBL partition. Allow also to issue a
# UFS_IOCTL_QUERY or SG_IO ioctl.
allow hal_bootctl vendor_sg_device:chr_file rw_file_perms;
allow hal_bootctl vendor_bsg_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;


#scsi driver does a capability check (CAP_SYS_RAWIO) when bootctl does
# an ioctl to /dev/ufs-bsg .Adding this rule to avoid ioctl error.
allow hal_bootctl_server self:capability { sys_rawio };
# Read the sysfs to lookup what /dev/sgN device
# corresponds to the XBL partitions.
allow hal_bootctl vendor_sysfs_scsi_target:dir r_dir_perms;

# Write to the XBL devices.
allow hal_bootctl vendor_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;