| Tri Vo | afdfeeb | 2018-05-16 10:43:26 -0700 | [diff] [blame] | 1 | # Transition to crash_dump when /system/bin/crash_dump* is executed. |
| 2 | # This occurs when the process crashes. |
| 3 | domain_auto_trans(domain, crash_dump_exec, crash_dump); |
| 4 | allow domain crash_dump:process sigchld; |
| 5 | |
| 6 | # Limit ability to ptrace or read sensitive /proc/pid files of processes |
| Jeff Sharkey | a0e7a6d | 2020-07-31 12:28:11 -0600 | [diff] [blame] | 7 | # with other UIDs to these allowlisted domains. |
| Tri Vo | afdfeeb | 2018-05-16 10:43:26 -0700 | [diff] [blame] | 8 | neverallow { |
| 9 | domain |
| 10 | -vold |
| 11 | -dumpstate |
| 12 | userdebug_or_eng(`-incidentd') |
| 13 | -storaged |
| 14 | -system_server |
| 15 | userdebug_or_eng(`-perfprofd') |
| 16 | } self:global_capability_class_set sys_ptrace; |
| 17 | |
| 18 | # Limit ability to generate hardware unique device ID attestations to priv_apps |
| 19 | neverallow { domain -priv_app } *:keystore_key gen_unique_id; |
| 20 | |
| 21 | neverallow { |
| 22 | domain |
| 23 | -init |
| 24 | -vendor_init |
| 25 | userdebug_or_eng(`-domain') |
| 26 | } debugfs_tracing_debug:file no_rw_file_perms; |
| 27 | |
| 28 | # Core domains are not permitted to use kernel interfaces which are not |
| 29 | # explicitly labeled. |
| 30 | # TODO(b/65643247): Apply these neverallow rules to all coredomain. |
| 31 | full_treble_only(` |
| 32 | # /proc |
| 33 | neverallow { |
| 34 | coredomain |
| 35 | -vold |
| 36 | } proc:file no_rw_file_perms; |
| 37 | |
| 38 | # /sys |
| 39 | neverallow { |
| 40 | coredomain |
| 41 | -init |
| 42 | -ueventd |
| 43 | -vold |
| 44 | } sysfs:file no_rw_file_perms; |
| 45 | |
| 46 | # /dev |
| 47 | neverallow { |
| 48 | coredomain |
| 49 | -fsck |
| 50 | -init |
| 51 | -ueventd |
| 52 | } device:{ blk_file file } no_rw_file_perms; |
| 53 | |
| 54 | # debugfs |
| 55 | neverallow { |
| 56 | coredomain |
| 57 | -dumpstate |
| 58 | -init |
| 59 | -system_server |
| 60 | } debugfs:file no_rw_file_perms; |
| 61 | |
| 62 | # tracefs |
| 63 | neverallow { |
| 64 | coredomain |
| 65 | -atrace |
| 66 | -dumpstate |
| 67 | -init |
| 68 | userdebug_or_eng(`-perfprofd') |
| 69 | -traced_probes |
| 70 | -shell |
| 71 | -traceur_app |
| 72 | } debugfs_tracing:file no_rw_file_perms; |
| 73 | |
| 74 | # inotifyfs |
| 75 | neverallow { |
| 76 | coredomain |
| 77 | -init |
| 78 | } inotify:file no_rw_file_perms; |
| 79 | |
| 80 | # pstorefs |
| 81 | neverallow { |
| 82 | coredomain |
| 83 | -bootstat |
| 84 | -charger |
| 85 | -dumpstate |
| 86 | -healthd |
| 87 | userdebug_or_eng(`-incidentd') |
| 88 | -init |
| 89 | -logd |
| 90 | -logpersist |
| 91 | -recovery_persist |
| 92 | -recovery_refresh |
| 93 | -shell |
| 94 | -system_server |
| 95 | } pstorefs:file no_rw_file_perms; |
| 96 | |
| 97 | # configfs |
| 98 | neverallow { |
| 99 | coredomain |
| 100 | -init |
| 101 | -system_server |
| 102 | } configfs:file no_rw_file_perms; |
| 103 | |
| 104 | # functionfs |
| 105 | neverallow { |
| 106 | coredomain |
| 107 | -adbd |
| 108 | -init |
| 109 | -mediaprovider |
| 110 | -system_server |
| 111 | } functionfs:file no_rw_file_perms; |
| 112 | |
| 113 | # usbfs and binfmt_miscfs |
| 114 | neverallow { |
| 115 | coredomain |
| 116 | -init |
| 117 | }{ usbfs binfmt_miscfs }:file no_rw_file_perms; |
| 118 | ') |