platform_system_sepolicy/public/simpleperf_app_runner.te

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type simpleperf_app_runner, domain, mlstrustedsubject;
type simpleperf_app_runner_exec, system_file_type, exec_type, file_type;
# run simpleperf_app_runner in adb shell.
allow simpleperf_app_runner adbd:fd use;
allow simpleperf_app_runner shell:fd use;
allow simpleperf_app_runner devpts:chr_file { read write ioctl };
# simpleperf_app_runner reads package information.
allow simpleperf_app_runner system_data_file:file r_file_perms;
allow simpleperf_app_runner system_data_file:lnk_file getattr;
Relabel /data/system/packages.list to new type. Conservatively grant access to packages_list_file to everything that had access to system_data_file:file even if the comment in the SELinux policy suggests it was for another use. Ran a diff on the resulting SEPolicy, the only difference of domains being granted is those that had system_data_file:dir permissiosn which is clearly not applicable for packages.list diff -u0 <(sesearch --allow -t system_data_file ~/sepolicy | sed 's/system_data_file/packages_list_file/') <(sesearch --allow -t packages_list_file ~/sepolicy_new) --- /proc/self/fd/16 2019-03-19 20:01:44.378409146 +0000 +++ /proc/self/fd/18 2019-03-19 20:01:44.378409146 +0000 @@ -3 +2,0 @@ -allow appdomain packages_list_file:dir getattr; @@ -6 +4,0 @@ -allow coredomain packages_list_file:dir getattr; @@ -8 +5,0 @@ -allow domain packages_list_file:dir search; @@ -35 +31,0 @@ -allow system_server packages_list_file:dir { rename search setattr read lock create reparent getattr write relabelfrom ioctl rmdir remove_name open add_name }; @@ -40 +35,0 @@ -allow tee packages_list_file:dir { search read lock getattr ioctl open }; @@ -43,3 +37,0 @@ -allow traced_probes packages_list_file:dir { read getattr open search }; -allow vendor_init packages_list_file:dir { search setattr read create getattr write relabelfrom ioctl rmdir remove_name open add_name }; -allow vold packages_list_file:dir { search setattr read lock create getattr mounton write ioctl rmdir remove_name open add_name }; @@ -48 +39,0 @@ -allow vold_prepare_subdirs packages_list_file:dir { read write relabelfrom rmdir remove_name open add_name }; @@ -50 +40,0 @@ -allow zygote packages_list_file:dir { search read lock getattr ioctl open }; Bug: 123186697 Change-Id: Ieabf313653deb5314872b63cd47dadd535af7b07
2019-03-19 19:14:38 +01:00
allow simpleperf_app_runner packages_list_file:file r_file_perms;
# The app's data dir may be accessed through a symlink.
allow simpleperf_app_runner system_data_file:lnk_file read;
# simpleperf_app_runner switches to the app UID/GID.
allow simpleperf_app_runner self:global_capability_class_set { setuid setgid };
# simpleperf_app_runner switches to the app security context.
selinux_check_context(simpleperf_app_runner) # validate context
allow simpleperf_app_runner self:process setcurrent;
allow simpleperf_app_runner untrusted_app_all:process dyntransition; # setcon
# simpleperf_app_runner/libselinux needs access to seapp_contexts_file to
# determine which domain to transition to.
allow simpleperf_app_runner seapp_contexts_file:file r_file_perms;
# simpleperf_app_runner passes pipe fds.
allow simpleperf_app_runner shell:fifo_file read;
# simpleperf_app_runner checks shell data paths.
# simpleperf_app_runner passes shell data fds.
allow simpleperf_app_runner shell_data_file:dir { getattr search };
allow simpleperf_app_runner shell_data_file:file { getattr write };
###
### neverallow rules
###
# simpleperf_app_runner cannot have capabilities other than CAP_SETUID and CAP_SETGID
neverallow simpleperf_app_runner self:global_capability_class_set ~{ setuid setgid };
neverallow simpleperf_app_runner self:global_capability2_class_set *;