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platform_system_sepolicy/genfs_contexts

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Support for ocontexts per device. ocontexts was split up into 4 files: 1.fs_use 2.genfs_contexts 3.initial_sid_contexts 4.port_contexts Each file has their respective declerations in them. Devices, in their respective device directory, can now specify sepolicy.fs_use, sepolicy.genfs_contexts, sepolicy.port_contexts, and sepolicy.initial_sid_contexts. These declerations will be added right behind their respective sepolicy counterparts in the concatenated configuration file.
2012-07-12 01:46:38 +02:00
# Label inodes with the fs label.
genfscon rootfs / u:object_r:rootfs:s0
# proc labeling can be further refined (longest matching prefix).
genfscon proc / u:object_r:proc:s0
Make /proc/net a proc_net type. Change-Id: Iaee5e09712e7f27e0adf645f18554bf2ebd4e448 Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>
2014-01-07 20:41:47 +01:00
genfscon proc /net u:object_r:proc_net:s0
Target the denials/policies over qtaguid file and device: 1. Relabel /proc/net/xt_qtaguid/ctrl from "qtaguid" to "qtaguid_proc"; 2. Label /dev/xt_qtaguid with "qtaguid_device"; 3. Allow mediaserver read/[write] to qtaguid_proc and qtaguid_device; 4. Allow media apps read/[write] to qtaguid_proc and qtaguid_device; 5. Allow system read/[write] to qtaguid_proc and qtaguid_device. Actually, some of policies related to qtaguid have been there already, but we refind existing ones and add new ones.
2012-07-19 20:07:04 +02:00
genfscon proc /net/xt_qtaguid/ctrl u:object_r:qtaguid_proc:s0
zygote: allow replacing /proc/cpuinfo Android's native bridge functionality allows an Android native app written on one CPU architecture to run on a different architecture. For example, Android ARM apps may run on an x86 CPU. To support this, the native bridge functionality needs to replace /proc/cpuinfo with the version from /system/lib/<ISA>/cpuinfo using a bind mount. See commit ab0da5a9a6860046619629b8e6b83692d35dff86 in system/core. This change: 1) Creates a new label proc_cpuinfo, and assigns /proc/cpuinfo that label. 2) Grants read-only access to all SELinux domains, to avoid breaking pre-existing apps. 3) Grants zygote mounton capabilities for that file, so zygote can replace the file as necessary. Addresses the following denial: avc: denied { mounton } for path="/proc/cpuinfo" dev="proc" ino=4026532012 scontext=u:r:zygote:s0 tcontext=u:object_r:proc:s0 tclass=file Bug: 17671501 Change-Id: Ib70624fba2baeccafbc0a41369833f76b976ee20
2014-09-26 19:51:12 +02:00
genfscon proc /cpuinfo u:object_r:proc_cpuinfo:s0
Address system_server denials. Label /proc/sysrq-trigger and allow access. Label /dev/socket/mtpd and allow access. Resolves denials such as: avc: denied { getattr } for pid=12114 comm="Binder_2" path="socket:[219779]" dev="sockfs" ino=219779 scontext=u:r:untrusted_app:s0 tcontext=u:r:system_server:s0 tclass=tcp_socket avc: denied { call } for pid=1007 comm="Binder_8" scontext=u:r:system_server:s0 tcontext=u:r:su:s0 tclass=binder avc: denied { write } for pid=1024 comm="watchdog" name="sysrq-trigger" dev="proc" ino=4026533682 scontext=u:r:system_server:s0 tcontext=u:object_r:proc:s0 tclass=file avc: denied { write } for pid=11567 comm="LegacyVpnRunner" name="mtpd" dev="tmpfs" ino=36627 scontext=u:r:system_server:s0 tcontext=u:object_r:socket_device:s0 tclass=sock_file avc: denied { ptrace } for pid=10924 comm=5369676E616C2043617463686572 scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=process avc: denied { sigkill } for pid=26077 comm="NativeCrashRepo" scontext=u:r:system_server:s0 tcontext=u:r:zygote:s0 tclass=process avc: denied { write } for pid=1024 comm="android.bg" scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=netlink_socket avc: denied { getattr } for pid=473 comm="FinalizerDaemon" path="socket:[11467]" dev="sockfs" ino=11467 scontext=u:r:system_server:s0 tcontext=u:r:mediaserver:s0 tclass=tcp_socket avc: denied { getattr } for pid=473 comm="FinalizerDaemon" path="socket:[12076]" dev="sockfs" ino=12076 scontext=u:r:system_server:s0 tcontext=u:r:mediaserv er:s0 tclass=udp_socket avc: denied { getopt } for pid=473 comm="FinalizerDaemon" laddr=192.168.159.172 lport=51576 faddr=93.127.173.40 fport=554 scontext=u:r:system_server:s0 tcontext=u:r:mediaserver:s0 tclass=tcp_socket avc: denied { getopt } for pid=473 comm="FinalizerDaemon" lport=15658 scontext=u:r:system_server:s0 tcontext=u:r:mediaserver:s0 tclass=udp_socket avc: denied { read write } for pid=21384 comm="rtsp" path="socket:[443742]" dev="sockfs" ino=443742 scontext=u:r:system_server:s0 tcontext=u:r:mediaserver:s 0 tclass=tcp_socket avc: denied { read write } for pid=21384 comm="rtsp" path="socket:[444842]" dev="sockfs" ino=444842 scontext=u:r:system_server:s0 tcontext=u:r:mediaserver:s0 tclass=udp_socket avc: denied { setopt } for pid=1326 comm="Binder_9" lport=16216 scontext=u:r:system_server:s0 tcontext=u:r:mediaserver:s0 tclass=udp_socket avc: denied { setopt } for pid=1676 comm="Binder_6" laddr=192.168.156.130 lport=51044 faddr=74.125.214.81 fport=554 scontext=u:r:system_server:s0 tcontext=u:r:mediaserver:s0 tclass=tcp_socket avc: denied { getattr } for pid=10915 comm="system_server" path="/dev/mdm" dev="tmpfs" ino=7484 scontext=u:r:system_server:s0 tcontext=u:object_r:radio_device:s0 tclass=chr_file avc: denied { read } for pid=10915 comm="system_server" name="mdm" dev="tmpfs" ino=7484 scontext=u:r:system_server:s0 tcontext=u:object_r:radio_device:s0 tclass=chr_file avc: denied { unlink } for pid=14866 comm="system_server" name="wallpaper" dev="mmcblk0p9" ino=285715 scontext=u:r:system_server:s0 tcontext=u:object_r:wallpaper_file:s0 tclass=file avc: denied { getattr } for pid=12114 comm="Binder_2" path="socket:[219779]" dev="sockfs" ino=219779 scontext=u:r:untrusted_app:s0 tcontext=u:r:system_server:s0 tclass=tcp_socket avc: denied { getopt } for pid=32300 comm="Binder_1" laddr=::ffff:127.0.0.1 lport=4939 faddr=::ffff:127.0.0.1 fport=53318 scontext=u:r:untrusted_app:s0 tcontext=u:r:system_server:s0 tclass=tcp_socket avc: denied { read write } for pid=10840 comm="pool-17-thread-" path="socket:[205990]" dev="sockfs" ino=205990 scontext=u:r:untrusted_app:s0 tcontext=u:r:system_server:s0 tclass=tcp_socket avc: denied { write } for pid=20817 comm="dumpsys" path="/mnt/shell/emulated/0/aupt-output/bugreport-2014-02-22-11-17-16.txt.tmp" dev="fuse" ino=3100784040 scontext=u:r:system_server:s0 tcontext=u:object_r:sdcard_internal:s0 tclass=file Change-Id: I481ac26667b487031a5d3317b0a028a027a8e641 Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2014-03-05 15:50:08 +01:00
genfscon proc /sysrq-trigger u:object_r:proc_sysrq:s0
Restrict the ability to set usermodehelpers and proc security settings. Limit the ability to write to the files that configure kernel usermodehelpers and security-sensitive proc settings to the init domain. Permissive domains can also continue to set these values. The current list is not exhaustive, just an initial set. Not all of these files will exist on all kernels/devices. Controlling access to certain kernel usermodehelpers, e.g. cgroup release_agent, will require kernel changes to support and cannot be addressed here. Expected output on e.g. flo after the change: ls -Z /sys/kernel/uevent_helper /proc/sys/fs/suid_dumpable /proc/sys/kernel/core_pattern /proc/sys/kernel/dmesg_restrict /proc/sys/kernel/hotplug /proc/sys/kernel/kptr_restrict /proc/sys/kernel/poweroff_cmd /proc/sys/kernel/randomize_va_space /proc/sys/kernel/usermodehelper -rw-r--r-- root root u:object_r:usermodehelper:s0 uevent_helper -rw-r--r-- root root u:object_r:proc_security:s0 suid_dumpable -rw-r--r-- root root u:object_r:usermodehelper:s0 core_pattern -rw-r--r-- root root u:object_r:proc_security:s0 dmesg_restrict -rw-r--r-- root root u:object_r:usermodehelper:s0 hotplug -rw-r--r-- root root u:object_r:proc_security:s0 kptr_restrict -rw-r--r-- root root u:object_r:usermodehelper:s0 poweroff_cmd -rw-r--r-- root root u:object_r:proc_security:s0 randomize_va_space -rw------- root root u:object_r:usermodehelper:s0 bset -rw------- root root u:object_r:usermodehelper:s0 inheritable Change-Id: I3f24b4bb90f0916ead863be6afd66d15ac5e8de0 Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2013-12-06 15:31:40 +01:00
genfscon proc /sys/fs/protected_hardlinks u:object_r:proc_security:s0
genfscon proc /sys/fs/protected_symlinks u:object_r:proc_security:s0
genfscon proc /sys/fs/suid_dumpable u:object_r:proc_security:s0
genfscon proc /sys/kernel/core_pattern u:object_r:usermodehelper:s0
genfscon proc /sys/kernel/dmesg_restrict u:object_r:proc_security:s0
genfscon proc /sys/kernel/hotplug u:object_r:usermodehelper:s0
genfscon proc /sys/kernel/kptr_restrict u:object_r:proc_security:s0
genfscon proc /sys/kernel/modprobe u:object_r:usermodehelper:s0
genfscon proc /sys/kernel/modules_disabled u:object_r:proc_security:s0
genfscon proc /sys/kernel/poweroff_cmd u:object_r:usermodehelper:s0
genfscon proc /sys/kernel/randomize_va_space u:object_r:proc_security:s0
genfscon proc /sys/kernel/usermodehelper u:object_r:usermodehelper:s0
Create proc_net type for /proc/sys/net entries. /proc/sys/net could use its own type to help distinguish among some of the proc access rules. Fix dhcp and netd because of this. Change-Id: I6e16cba660f07bc25f437bf43e1eba851a88d538 Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>
2014-01-07 19:46:56 +01:00
genfscon proc /sys/net u:object_r:proc_net:s0
Restrict mapping low memory. Label /proc/sys/vm/mmap_min_addr with proc_security to prevent writing it by any domain other than init. Also remove memprotect mmap_zero permission from unconfineddomain so that it cannot pass the SELinux check over mapping low memory. Change-Id: Idc189feeb325a4aea26c93396fd0fa7225e79586 Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2013-12-09 19:24:25 +01:00
genfscon proc /sys/vm/mmap_min_addr u:object_r:proc_security:s0
Support for ocontexts per device. ocontexts was split up into 4 files: 1.fs_use 2.genfs_contexts 3.initial_sid_contexts 4.port_contexts Each file has their respective declerations in them. Devices, in their respective device directory, can now specify sepolicy.fs_use, sepolicy.genfs_contexts, sepolicy.port_contexts, and sepolicy.initial_sid_contexts. These declerations will be added right behind their respective sepolicy counterparts in the concatenated configuration file.
2012-07-12 01:46:38 +02:00
# selinuxfs booleans can be individually labeled.
genfscon selinuxfs / u:object_r:selinuxfs:s0
genfscon cgroup / u:object_r:cgroup:s0
# sysfs labels can be set by userspace.
genfscon sysfs / u:object_r:sysfs:s0
genfscon inotifyfs / u:object_r:inotify:s0
Rename sdcard_internal/external types. Rename sdcard_internal/external types to fuse and vfat respectively to make it clear that they are assigned to any fuse or vfat filesystem by default (absent a context= mount option) and do not necessarily represent the SDcard. The sdcard_type attribute is still assigned to both types and can still be used in allow rules to permit access to either the internal or external SDcard. Define type aliases for the old names to preserve compatibility on policy reload and for device-specific policies that may not yet be updated. Change-Id: I8d91a8c4c1342b94e4f1bb62ca7ffd2ca4b06ba1 Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2014-07-08 20:45:09 +02:00
genfscon vfat / u:object_r:vfat:s0
Support for ocontexts per device. ocontexts was split up into 4 files: 1.fs_use 2.genfs_contexts 3.initial_sid_contexts 4.port_contexts Each file has their respective declerations in them. Devices, in their respective device directory, can now specify sepolicy.fs_use, sepolicy.genfs_contexts, sepolicy.port_contexts, and sepolicy.initial_sid_contexts. These declerations will be added right behind their respective sepolicy counterparts in the concatenated configuration file.
2012-07-12 01:46:38 +02:00
genfscon debugfs / u:object_r:debugfs:s0
Rename sdcard_internal/external types. Rename sdcard_internal/external types to fuse and vfat respectively to make it clear that they are assigned to any fuse or vfat filesystem by default (absent a context= mount option) and do not necessarily represent the SDcard. The sdcard_type attribute is still assigned to both types and can still be used in allow rules to permit access to either the internal or external SDcard. Define type aliases for the old names to preserve compatibility on policy reload and for device-specific policies that may not yet be updated. Change-Id: I8d91a8c4c1342b94e4f1bb62ca7ffd2ca4b06ba1 Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2014-07-08 20:45:09 +02:00
genfscon fuse / u:object_r:fuse:s0
pstore file system labeling pstore(persistent store) have been applied since kernel 3.5 We need to label the pstore-fs in order to use Android with kernel 3.5 or upper version. My kernel version is 3.10 and I got the below denial log when I ran the "df" command on the adb shell. type=1400 msg=audit(1388540540.220:18): avc: denied { getattr } for pid=7296 comm="df" name="/" dev="pstore" ino=7703 scontext=u:r:init:s0 tcontext=u:object_r:unlabeled:s0 tclass=filesystem And the below log is also shown during booting type=1400 msg=audit(1388539193.750:4): avc: denied { mount } for pid=2844 comm="mount" name="/" dev="pstore" ino=11393 scontext=u:r:init_shell:s0 tcontext=u:object_r:unlabeled:s0 tclass=filesystem Change-Id: Iaba543d44565c4f20a77a95b9573a628bbd3fd34
2014-04-10 06:32:54 +02:00
genfscon pstore / u:object_r:pstorefs:s0
Label /dev/usb-ffs/adb functionfs Newer adbd versions use functionfs instead of a custom adb usb gadget. Make sure the functionfs filesystem is properly labeled, and that adbd has access to the functionfs files. Once labeled, this addresses the following denials: <12>[ 16.127191] type=1400 audit(949060866.189:4): avc: denied { read write } for pid=223 comm="adbd" name="ep0" dev="functionfs" ino=5489 scontext=u:r:adbd:s0 tcontext=u:object_r:functionfs:s0 tclass=file <12>[ 16.127406] type=1400 audit(949060866.189:5): avc: denied { open } for pid=223 comm="adbd" path="/dev/usb-ffs/adb/ep0" dev="functionfs" ino=5489 scontext=u:r:adbd:s0 tcontext=u:object_r:functionfs:s0 tclass=file <12>[ 377.366011] type=1400 audit(949061227.419:16): avc: denied { ioctl } for pid=225 comm="adbd" path="/dev/usb-ffs/adb/ep2" dev="functionfs" ino=5564 scontext=u:r:adbd:s0 tcontext=u:object_r:functionfs:s0 tclass=file Change-Id: Iee8b522e48b4d677fd12f7c83dbc7ffbc9543ad2
2014-04-15 23:53:05 +02:00
genfscon functionfs / u:object_r:functionfs:s0
label usbfs Right now usbfs doesn't have any labels, generating the following kernel warnings: <7>[ 3.009582] SELinux: initialized (dev usbfs, type usbfs), not configured for labeling and the occasional SELinux unlabeled auditallow logs: <4>[ 285.579254] type=1400 audit(1402010345.094:16): avc: granted { search } for pid=371 comm="qcks" name="/" dev="usbfs" ino=15794 scontext=u:r:kickstart:s0 tcontext=u:object_r:unlabeled:s0 tclass=dir <4>[ 285.632354] type=1400 audit(1402010345.154:18): avc: granted { search } for pid=371 comm="qcks" name="001" dev="usbfs" ino=15796 scontext=u:r:kickstart:s0 tcontext=u:object_r:unlabeled:s0 tclass=dir Make sure usbfs is assigned via genfscon Change-Id: I7191f2584014ba55a3c3a98e7efd0350dc958782
2014-06-07 16:31:31 +02:00
genfscon usbfs / u:object_r:usbfs:s0
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