Add the following mount options to the /proc filesystem:
hidepid=2,gid=3009
This change blocks /proc access unless you're in group 3009
(aka AID_READPROC).
Please see
https://github.com/torvalds/linux/blob/master/Documentation/filesystems/proc.txt
for documentation on the hidepid option.
hidepid=2 is preferred over hidepid=1 since it leaks less information
and doesn't generate SELinux ptrace denials when trying to access
/proc without being in the proper group.
Add AID_READPROC to processes which need to access /proc entries for
other UIDs.
Bug: 23310674
Change-Id: I22bb55ff7b80ff722945e224845215196f09dafa
Brillo will need to run new native system services, so reserve
a reasonable UID range to accomodate them. Having 1000 UIDs will
allow us to sub-partition this range if needed.
The range can be used by any OEM, not just Brillo, so name it
accordingly.
Bug: 22555869
Change-Id: I752428ee5025bf064a35ecbe6da50c041d87b724
Using a getenv('OUT') in such a deep down function is a wrong design
choice. Replacing with explicit parameter that may be NULL in case
device specific files can be accessed from /.
Since TARGET_COPY_OUT_SYSTEM may be defined to something different than
system we also ensure that we use a path relative to TARGET_OUT to
compute path to fs_config_* files.
Bug: 21989305
Bug: 22048934
Change-Id: Id91bc183b29beac7379d1117ad83bd3346e6897b
Signed-off-by: Thierry Strudel <tstrudel@google.com>
C (but not C++) has a concept of a flexible array member, which
is documented at https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html .
Using a flexible array member indicates that the structure is
really a header for a variable length object.
In logd's case, the variable length structure android_event_string_t
was embedded within another structure called
android_log_event_string_t. This makes gcc's __builtin_object_size()
function really confused. When compiling with C++,
__builtin_object_size(android_log_event_string_t.payload.data, 1)
would return 0, whereas if you compiled the code with C, the same
call would (properly) return -1.
Code which does automatic bounds checking, such as the proposed
patch at https://android-review.googlesource.com/145411 , will
cause problems for logd if this syntax is used.
Don't try to embed a variable length structure within another
structure. This doesn't appear to be valid C nor C++, and
while it's worked, it seems problematic.
Instead, inline the structure so it's one big happy structure.
Change-Id: I8ac02b7142a4f6560f5f80df2effcf720f9896fc
(Cherry picked from commit 83e6f2606b)
Resolved conflict in include/private/android_filesystem_config.h, content
already in libcutils/fs_config.c.
Change-Id: I817707721786e9b920fef14ebe836fdcd65a8606
pixelflinger should not be used for new projects and should be moved out
of system/core at some point. As the first step, move all its headers
under system/core/libpixelflinger/include and update its Android.mk
files so they're not referring to the absolute system/core path anymore.
Change-Id: Idead273ab2c0450409d770f5402c4dba916192a9
Signed-off-by: Greg Hackmann <ghackmann@google.com>
pixelflinger should not be used for new projects and should be moved out
of system/core at some point. As the first step, move all its headers
under system/core/libpixelflinger/include and update its Android.mk
files so they're not referring to the absolute system/core path anymore.
Change-Id: I7acc3ef5b2e21d8ba6fe939ea8d3ec4c41959591
Signed-off-by: Greg Hackmann <ghackmann@google.com>
- create a structure to depict the private header
expected at logd end of socket.
- utilize this new structure instead of unscalable
byte stream technique used to unpack in logd.
Change-Id: I2d0e5c3531c279f2dc1fbd74807210ff8d804de0
Currently, /system/xbin/su is world executable. Prior to SELinux
enforcement, anyone (including third party apps) could run su.
The su code itself checks to see if the calling UID is root or shell.
Rather than relying on enforcement within the su binary, modify the
binary so it has group=shell, and remove world-execute permission.
This helps avoid some annoying SELinux denial messages as third party
apps call su on userdebug/eng builds.
Change-Id: I61c9231bb7e201d14ee3a5b6fe81b3fa7b12599f
Define a UID to be used by the process responsible for creating shared
RELRO files for the WebView native library, and create a directory owned
by that UID to use to store the files.
Bug: 13005501
Change-Id: I5bbb1e1035405e5534b2681f554fe16f74e3da1a
Automatically assigned as a GID to all apps running under the same
Android profile. Used for exposing to or sharing files with apps
running in a specific profile.
Analogous to AID_SHARED_GID only the sharing is between processes with
the same userId rather than with the same appId.
The name to be displayed for uids/gids with this AID is 'u*_everyone'.
Change-Id: I46efb749f74cb86868c5609a0ce1a6aab2f9e9c9
* Create a new userspace log daemon for handling logging messages.
Original-Change-Id: I75267df16359684490121e6c31cca48614d79856
Signed-off-by: Nick Kralevich <nnk@google.com>
* Merge conflicts
* rename new syslog daemon to logd to prevent confusion with bionic syslog
* replace racy getGroups call with KISS call to client->getGid()
* Timestamps are filed at logging source
* insert entries into list in timestamp order
* Added LogTimeEntry tail filtration handling
* Added region locking around LogWriter list
* separate threads for each writer
* /dev/socket/logd* permissions
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
(cherry picked from commit 3e76e0a497)
Author: Nick Kralevich <nnk@google.com>
Change-Id: Ice88b1412d8f9daa7f9119b2b5aaf684a5e28098
* Create a new userspace log daemon for handling logging messages.
Original-Change-Id: I75267df16359684490121e6c31cca48614d79856
Signed-off-by: Nick Kralevich <nnk@google.com>
* Merge conflicts
* rename new syslog daemon to logd to prevent confusion with bionic syslog
* replace racy getGroups call with KISS call to client->getGid()
* Timestamps are filed at logging source
* insert entries into list in timestamp order
* Added LogTimeEntry tail filtration handling
* Added region locking around LogWriter list
* separate threads for each writer
* /dev/socket/logd* permissions
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Change-Id: Ice88b1412d8f9daa7f9119b2b5aaf684a5e28098
The script that writes the recovery partition after a successful
update of system needs to be made executable. This change also moves
it from /system/etc to /system/bin.
Bug: 12893978
Change-Id: I686e2392a2392515a6859a7381b735de1007b7ea
Add a service called "pre-recovery" which is normally stopped but can
be started by the system server when we want to go into recovery. It
will do any preparation needed (currently needed to handle update
packages that reside on an encrypted /data partition) and then set
sys.powerctl when it's ready to actually reboot.
Bug: 12188746
Change-Id: I894a4cb200395a0f6d7fe643ed4c2ac0a45d2052
Nick Kralevich