8309f0a299
This leaves only the existence of adbd domain as public API. All other
rules are implementation details of this domain's policy and are thus
now private.
Test: No change to policy according to sesearch, except for
disappearance of all allow rules to do with adbd_current except
those created by other domains' allow rules referencing adbd
domain from public and vendor policies.
Bug: 31364497
Change-Id: Icdce8b89f67c70c6c4c116471aaa412e55028cd8
129 lines
4.1 KiB
Text
129 lines
4.1 KiB
Text
### ADB daemon
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typeattribute adbd mlstrustedsubject;
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domain_auto_trans(adbd, shell_exec, shell)
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userdebug_or_eng(`
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allow adbd self:process setcurrent;
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allow adbd su:process dyntransition;
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')
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# Do not sanitize the environment or open fds of the shell. Allow signaling
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# created processes.
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allow adbd shell:process { noatsecure signal };
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# Set UID and GID to shell. Set supplementary groups.
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allow adbd self:capability { setuid setgid };
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# Drop capabilities from bounding set on user builds.
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allow adbd self:capability setpcap;
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# Create and use network sockets.
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net_domain(adbd)
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# Access /dev/usb-ffs/adb/ep0
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allow adbd functionfs:dir search;
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allow adbd functionfs:file rw_file_perms;
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# Use a pseudo tty.
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allow adbd devpts:chr_file rw_file_perms;
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# adb push/pull /data/local/tmp.
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allow adbd shell_data_file:dir create_dir_perms;
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allow adbd shell_data_file:file create_file_perms;
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# adb pull /data/misc/profman.
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allow adbd profman_dump_data_file:dir r_dir_perms;
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allow adbd profman_dump_data_file:file r_file_perms;
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# adb push/pull sdcard.
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allow adbd tmpfs:dir search;
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allow adbd rootfs:lnk_file r_file_perms; # /sdcard symlink
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allow adbd tmpfs:lnk_file r_file_perms; # /mnt/sdcard symlink
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allow adbd sdcard_type:dir create_dir_perms;
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allow adbd sdcard_type:file create_file_perms;
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# adb pull /data/anr/traces.txt
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allow adbd anr_data_file:dir r_dir_perms;
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allow adbd anr_data_file:file r_file_perms;
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# Set service.adb.*, sys.powerctl, and sys.usb.ffs.ready properties.
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set_prop(adbd, shell_prop)
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set_prop(adbd, powerctl_prop)
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set_prop(adbd, ffs_prop)
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# Access device logging gating property
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get_prop(adbd, device_logging_prop)
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# Read device's serial number from system properties
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get_prop(adbd, serialno_prop)
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# Run /system/bin/bu
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allow adbd system_file:file rx_file_perms;
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# Perform binder IPC to surfaceflinger (screencap)
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# XXX Run screencap in a separate domain?
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binder_use(adbd)
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binder_call(adbd, surfaceflinger)
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# b/13188914
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allow adbd gpu_device:chr_file rw_file_perms;
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allow adbd ion_device:chr_file rw_file_perms;
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r_dir_file(adbd, system_file)
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# Read /data/misc/adb/adb_keys.
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allow adbd adb_keys_file:dir search;
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allow adbd adb_keys_file:file r_file_perms;
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userdebug_or_eng(`
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# Write debugging information to /data/adb
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# when persist.adb.trace_mask is set
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# https://code.google.com/p/android/issues/detail?id=72895
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allow adbd adb_data_file:dir rw_dir_perms;
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allow adbd adb_data_file:file create_file_perms;
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')
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# ndk-gdb invokes adb forward to forward the gdbserver socket.
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allow adbd app_data_file:dir search;
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allow adbd app_data_file:sock_file write;
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allow adbd appdomain:unix_stream_socket connectto;
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# ndk-gdb invokes adb pull of app_process, linker, and libc.so.
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allow adbd zygote_exec:file r_file_perms;
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allow adbd system_file:file r_file_perms;
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# Allow pulling the SELinux policy for CTS purposes
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allow adbd selinuxfs:dir r_dir_perms;
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allow adbd selinuxfs:file r_file_perms;
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allow adbd kernel:security read_policy;
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allow adbd surfaceflinger_service:service_manager find;
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allow adbd bootchart_data_file:dir search;
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allow adbd bootchart_data_file:file r_file_perms;
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# Allow access to external storage; we have several visible mount points under /storage
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# and symlinks to primary storage at places like /storage/sdcard0 and /mnt/user/0/primary
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allow adbd storage_file:dir r_dir_perms;
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allow adbd storage_file:lnk_file r_file_perms;
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allow adbd mnt_user_file:dir r_dir_perms;
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allow adbd mnt_user_file:lnk_file r_file_perms;
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# Access to /data/media.
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# This should be removed if sdcardfs is modified to alter the secontext for its
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# accesses to the underlying FS.
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allow adbd media_rw_data_file:dir create_dir_perms;
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allow adbd media_rw_data_file:file create_file_perms;
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r_dir_file(adbd, apk_data_file)
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allow adbd rootfs:dir r_dir_perms;
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###
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### Neverallow rules
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###
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# No transitions from adbd to non-shell, non-crash_dump domains. adbd only ever
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# transitions to the shell domain (except when it crashes). In particular, we
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# never want to see a transition from adbd to su (aka "adb root")
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neverallow adbd { domain -crash_dump -shell }:process transition;
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neverallow adbd { domain userdebug_or_eng(`-su') }:process dyntransition;
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