With Treble and Mainline, each partition needs to be able to
independently define its own set of AIDs and therefore needs its own
AID range to not conflict with updates made to other partitions.
This includes the system partition in the case of vendors making
additions to it. Bionic will always have the hardcoded list of
platform AIDs in its own reserved list.
Bug: 73062966
Test: can load AIDs from partitions other than vendor
Test: bionic-unit-tests
Change-Id: I6509acc555cd28b421b9edaf3f8006bad6c56125
No one outside of libcutils is using these structs and we don't want
to leak them as they are private.
Test: build
Change-Id: I1c95564a9843c9155a333334008cbff7c7ff1f51
We replaced creating the binary fs_config files with a python script
(/build/make/tools/fs_config/fs_config_generator.py), so there are no
more users of this function, nor do we plan for there to be.
Test: build
Change-Id: I49ec7e3d22c206bc250cbda6f66a4a59e47030e9
Add a new ashmem_init function that only dlopens libashmemd_client.
This allows the library to be preloaded in the zygote.
Test: boots, works
Bug: 129543489
Change-Id: Ie106791edf381654f085203c266c9f9c0df35cfc
Hex literals have the type of the first type they fit in. The reboot
constants are large enough that that's `unsigned` rather than `int`.
Bug: http://b/76110968
Test: treehugger
Change-Id: Iac4fe61d1fe572297febf0b57e34d698942469f9
This reverts commit b5394db682.
Reason for revert: AOSP is fixed with new vendor image
Change-Id: Ie1a2e0200600214a65f4fe2250c903c8e8ce0a29
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Introduce a new systrace tag, TRACE_TAG_RRO, for use with runtime
resource overlay.
Bug: 119761810
Test: builds
Merged-In: I7b883d107a9ae2b12bbda04b74001a68e2a904aa
Change-Id: I7b883d107a9ae2b12bbda04b74001a68e2a904aa
Introduce a standalone live-lock daemon (llkd), to catch kernel
or native user space deadlocks and take mitigating actions. Will
also configure [khungtaskd] to fortify the actions.
If a thread is in D or Z state with no forward progress for longer
than ro.llk.timeout_ms, or ro.llk.[D|Z].timeout_ms, kill the process
or parent process respectively. If another scan shows the same
process continues to exist, then have a confirmed live-lock condition
and need to panic. Panic the kernel in a manner to provide the
greatest bugreporting details as to the condition. Add a alarm self
watchdog should llkd ever get locked up that is double the expected
time to flow through the mainloop. Sampling is every
ro.llk_sample_ms.
Default will not monitor init, or [kthreadd] and all that [kthreadd]
spawns. This reduces the effectiveness of llkd by limiting its
coverage. If in the future, if value in covering kthreadd spawned
threads, the requirement will be to code drivers so that they do not
remain in a persistent 'D' state, or that they have mechanisms to
recover the thread should it be killed externally. Then the
blacklists can be adjusted accordingly if these conditions are met.
An accompanying gTest set have been added, and will setup a persistent
D or Z process, with and without forward progress, but not in a
live-lock state because that would require a buggy kernel, or a module
or kernel modification to stimulate.
Android Properties llkd respond to (*_ms parms are in milliseconds):
- ro.config.low_ram default false, if true do not sysrq t (dump
all threads).
- ro.llk.enable default false, allow live-lock daemon to be enabled.
- ro.khungtask.enable default false, allow [khungtaskd] to be enabled.
- ro.llk.mlockall default true, allow mlock'd live-lock daemon.
- ro.khungtask.timeout default 12 minutes.
- ro.llk.timeout_ms default 10 minutes, D or Z maximum timelimit,
double this value and it sets the alarm watchdog for llkd.
- ro.llk.D.timeout_ms default ro.llk.timeout_ms, D maximum timelimit.
- ro.llk.Z.timeout_ms default ro.llk.timeout_ms, Z maximum timelimit.
- ro.llk.check_ms default 2 minutes sampling interval
(ro.llk.timeout_ms / 5) for threads in D or Z state.
- ro.llk.blacklist.process default 0,1,2 (kernel, init and
[kthreadd]), and process names (/comm or /cmdline) init,[kthreadd],
lmkd,lmkd.llkd,llkd,[khungtaskd],watchdogd,[watchdogd],
[watchdogd/0] ...
- ro.llk.blacklist.parent default 0,2 (kernel and [kthreadd]) and
"[kthreadd]". A comma separated lists of process ids, /comm names
or /cmdline names.
- ro.llk.blacklist.uid default <empty>, comma separated list of
uid numbers or names from getpwuid/getpwnam.
Test: llkd_unit_test
Bug: 33808187
Bug: 72838192
Change-Id: I32e8aa78aef10834e093265d0f3ed5b4199807c6
Set F() capability set and 'drop' lmkd from AID_ROOT to AID_LMKD uid
and from AID_ROOT to AID_LMKD and AID_SYSTEM gid.
/dev/memcg/memory.pressure defaults to root.root mode 0000, set it up
as root.system mode 0040 to allow lmkd read access.
Instrument failure to set SCHED_FIFO.
Annotate access points that require elevated capabilities.
Test: check /proc/`pidof lmkd`/status for capability set
Test: lmkd_unit_test
Bug: 77650566
Change-Id: I986081a0434cf6e842b63a55726380205b30a3ea
So we can auto-generate tracing code for AIDL interfaces.
Bug: 74416314
Test: inspect atrace output
Change-Id: I91b14b3b16d8d7a29f531101b14ddf10dbc61a5a
Merged-In: I91b14b3b16d8d7a29f531101b14ddf10dbc61a5a
So we can auto-generate tracing code for AIDL interfaces.
Bug: 74416314
Test: inspect atrace output
Change-Id: I91b14b3b16d8d7a29f531101b14ddf10dbc61a5a
Now all somewhat time-consuming methods of the VibratorService
are surrounded by traceBegin/traceEnd blocks.
The vibration itself is surrounded with asyncTrace block.
Test: Run "systrace vibrator" and see the time consumption report.
Bug: 73000045
Merged-In: I94172e379354ec3418321b8151e6182cec2e886c
Change-Id: I94172e379354ec3418321b8151e6182cec2e886c
Multiple LTP tests require a "daemon" or "bin" user. These user ids
have been defined since UNIX incept, and even up to the '80s remained
in many of the tools as hard coded values. Add these two ids with
a cautionary note.
Test: compile
Bug: 31152327
Bug: 31226046
Bug: 32385889
Change-Id: Ida2fb6d817b8ada0624870439fcf848667b31fb3
Filesystems allow the setting of the "resgid" parameter to designate
a GID that is allowed to use the "reserved" disk space (in addition
to UID 0). We'll be granting this GID to critical system processes,
so that the system is usable enough for the user to free up disk
space used by abusive apps.
Test: builds, boots
Bug: 62024591
Change-Id: I2d166f3b730f0a3e7279fb40f12db7413c1dadad
Just the minimial changes to get this to actually build, because otherwise
we always bog down trying to rewrite everything (when the real answer
is usually "stop using libcutils, it's awful").
This doesn't move a handful of files: two are basically just BSD libc
source, a couple have outstanding code reviews, and one can be deleted
(but I'll do that in a separate change).
I'm also skipping the presubmit hooks because otherwise clang-format
wants to reformat everything. I'll follow up with that...
Bug: N/A
Test: builds
Change-Id: I06403f465b67c8e493bad466dd76b1151eed5993
