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selinux rules for apk files installed with Incremental

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Apk files installed with Incremental are actually stored under the
/data/incremental directory.

Since files under /data/incremental are labeled as apk_file_data, we
need additional permissions to enable an apk installation.

Denial messages:

=== vold ===
02-04 14:22:45.756   599   599 I Binder:599_3: type=1400 audit(0.0:607): avc: denied { read } for name="mount" dev="dm-5" ino=894 scontext=u:r:vold:s0 tcontext=u:object_r:apk_data_file:s0 tclass=dir permissive=1
02-04 14:22:45.756   599   599 I Binder:599_3: type=1400 audit(0.0:608): avc: denied { open } for path="/data/incremental/data_incremental_tmp_792314038/mount" dev="dm-5" ino=894 scontext=u:r:vold:s0 tcontext=u:object_r:apk_data_file:s0 tclass=dir permissive=1
02-04 14:22:45.760   599   599 I Binder:599_3: type=1400 audit(0.0:609): avc: denied { mounton } for path="/data/incremental/data_incremental_tmp_792314038/mount" dev="dm-5" ino=894 scontext=u:r:vold:s0 tcontext=u:object_r:apk_data_file:s0 tclass=dir permissive=1
02-04 14:22:45.766  1431  1431 I PackageInstalle: type=1400 audit(0.0:620): avc: denied { read write open } for path="/data/incremental/data_incremental_tmp_792314038/backing_store/.index/f5c14952f6dde3b4a77a94e45388c012" dev="dm-5" ino=897 scontext=u:r:vold:s0
02-04 14:22:45.923  1431  1431 I PackageManager: type=1400 audit(0.0:637): avc: denied { write } for path="/data/incremental/data_incremental_tmp_792314038/backing_store/st_5_0" dev="dm-5" ino=896 scontext=u:r:vold:s0 tcontext=u:object_r:apk_data_file:s0 tclass=dir permissive=1
02-04 14:22:47.326  8839  8839 I android.vending: type=1400 audit(0.0:658): avc: denied { read write open } for path="/data/incremental/data_incremental_tmp_792314038/backing_store/st_6_1/flipboard.app-KPIT2MBSpQYWG-USITOftw==/base.apk" dev="dm-5" ino=899 scontext=u:r:vold:s0 tcontext=u:object_r:apk_data_file:s0 tclass=file permissive=1 app=com.android.vending
02-04 14:22:45.780   599   599 I Binder:599_3: type=1400 audit(0.0:623): avc: denied { getattr } for path="/data/app/vmdl1155417082.tmp" dev="dm-5" ino=888 scontext=u:r:vold:s0 tcontext=u:object_r:apk_tmp_file:s0 tclass=dir permissive=1
02-04 14:22:45.780   599   599 I Binder:599_3: type=1400 audit(0.0:624): avc: denied { read } for name="vmdl1155417082.tmp" dev="dm-5" ino=888 scontext=u:r:vold:s0 tcontext=u:object_r:apk_tmp_file:s0 tclass=dir permissive=1
02-04 14:22:45.780   599   599 I Binder:599_3: type=1400 audit(0.0:625): avc: denied { open } for path="/data/app/vmdl1155417082.tmp" dev="dm-5" ino=888 scontext=u:r:vold:s0 tcontext=u:object_r:apk_tmp_file:s0 tclass=dir permissive=1
02-04 14:22:45.780   599   599 I Binder:599_3: type=1400 audit(0.0:627): avc: denied { mounton } for path="/data/app/vmdl1155417082.tmp" dev="dm-5" ino=888 scontext=u:r:vold:s0 tcontext=u:object_r:apk_tmp_file:s0 tclass=dir permissive=1

02-04 15:32:02.386   591   591 I Binder:591_4: type=1400 audit(0.0:537): avc: denied { search } for name="incremental" dev="dm-5" ino=120 scontext=u:r:vold:s0 tcontext=u:object_r:apk_data_file:s0 tclass=dir permissive=1

=== system_app ===
02-04 14:22:45.793  5064  5064 I Binder:5064_1: type=1400 audit(0.0:633): avc: denied { write } for path="/data/incremental/data_incremental_tmp_792314038/backing_store/st_5_0/base.apk" dev="dm-5" ino=899 scontext=u:r:system_app:s0 tcontext=u:object_r:apk_data_file:s0 tclass=file permissive=1

Test: manual
BUG: 133435829
Change-Id: I70f25a6e63dd2be87ccbe9fb9e9d50fa64d88c36
This commit is contained in:
Songchun Fan 2020-02-04 12:39:45 -08:00
parent 28d5e87d39
commit 020e3ab035
3 changed files with 12 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
private/system_app.te
View file

@ -69,6 +69,9 @@ allow system_app anr_data_file:file create_file_perms;
# Settings need to access app name and icon from asec
allow system_app asec_apk_file:file r_file_perms;
# Allow system_app (adb data loader) to write data to /data/incremental
allow system_app apk_data_file:file write;
# Allow system apps (like Settings) to interact with statsd
binder_call(system_app, statsd)

4
public/app.te
View file

@ -464,10 +464,10 @@ neverallow appdomain system_data_file:dir_file_class_set
# Write to various other parts of /data.
neverallow appdomain drm_data_file:dir_file_class_set
{ create write setattr relabelfrom relabelto append unlink link rename };
neverallow { appdomain -platform_app }
neverallow { appdomain -platform_app -system_app }
apk_data_file:dir_file_class_set
{ create write setattr relabelfrom relabelto append unlink link rename };
neverallow { appdomain -platform_app }
neverallow { appdomain -platform_app -system_app }
apk_tmp_file:dir_file_class_set
{ create write setattr relabelfrom relabelto append unlink link rename };
neverallow { appdomain -platform_app }

7
public/vold.te
View file

@ -118,6 +118,13 @@ allow vold mnt_expand_file:dir { create_dir_perms mounton };
allow vold apk_data_file:dir { create getattr setattr };
allow vold shell_data_file:dir { create getattr setattr };
# Allow to mount incremental file system on /data/incremental and create files
allow vold apk_data_file:dir { mounton rw_dir_perms };
# Allow to create and write files in /data/incremental
allow vold apk_data_file:file rw_file_perms;
# Allow to bind-mount incremental file system on /data/app/vmdl*.tmp and read files
allow vold apk_tmp_file:dir { mounton r_dir_perms };
allow vold tmpfs:filesystem { mount unmount };
allow vold tmpfs:dir create_dir_perms;
allow vold tmpfs:dir mounton;