This command functions similarly to `exec` except that it does not
cause init to halt executing commands until the process has
terminated. It is useful for launching simple one time background
tasks.
Bug: 65736247
Test: create an exec_background service and see it function properly
Change-Id: I719c8b85479b65201770aedc0a13191303007c11
Builtin commands may set the sys.powerctl property, which causes
reboot to be immediately processed. Unfortunately, part of the reboot
processing involves clearing the action queue, so when this scenario
happens, ActionManager::ExecuteOneCommand() can abort due to its state
being unexpectedly changed.
Longer term, the real fix here is to split init and property service.
In this case, the property sets will be sent to property service and
the reboot will only be processed once property service responds back
to init that the property has been set. Since that will not happen
within the action queue, there will be no risk of failure.
Short term, this change sets a flag in init to shutdown the device
before the next action is run, which defers the shutdown enough to fix
the crash, but continues to prevent any further commands from running.
Bug: 65374456
Test: force bullhead into the repro case and observe that it no longer
repros
Change-Id: I89c73dad8d7912a845d694b095cab061b8dcc05e
ExpandArgs() was factored out of Service::Start() to clean up init,
however this introduced a bug: the scope of expanded_args ends when
ExpandArgs() returns, yet pointers to the c strings contained within
those std::strings are returned from the function. These pointers are
invalid and have been seen to cause failures on real devices.
This change moves the execv() into ExpandArgs() and renames it
ExpandArgsAndExecv() to keep the clean separation of Service::Start()
but fix the variable scope issue.
Bug: 65303004
Test: boot fugu
Change-Id: I612128631f5b58d040bffcbc2220593ad16cd450
This allows Android to cleanly shutdown when running in a PID namespace
in a way that does not rely on adbd running. This is useful to allow
Android to be running in a container and its lifetime managed by an
OCI-compliant tool.
Bug: 65415372
Test: `kill -TERM 1` as root is correctly dropped.
Test: `kill -TERM 1` from the init PID namespace causes init to cleanly shutdown.
Change-Id: Ia66ebdb436221919081bc4723337c0c7f1e53b09
Unless a process logs that it is requesting a device to reboot, there
are no logs to show which process triggered a reboot. This change
introduces such a log in property service such that system initiated
reboots can be clearly blamed back to a calling process.
Bug: 64214361
Test: reboot and check kernel log for reboot string
Change-Id: I18de33d2a0933d20bdb581025b78020c88c5c6eb
init: support loading odm sepolicy
Currently init merges two sepolicy cil files:
- /system/etc/selinux/plat_sepolicy.cil
- /vendor/etc/selinux/nonplat_sepolicy.cil
This change replaces nonplat_sepolicy.cil with the following two files:
- /vendor/etc/selinux/declaration/nonplat_declaration.cil
- /vendor/etc/selinux/vender_sepolicy.cil
And support merging another default (but optional):
- /odm/etc/selinux/odm_sepolicy.cil.
Bug: 64240127
Test: boot sailfish normally without odm.cil
Test: boot another device having odm.cil
Change-Id: I0b7f8c656c73ddb0fd46f2af3c625d7c81566f2f
We have seen that storing persistent properties in separate files
causes increased boot latency compared to if they were stored in a
single contiguous file.
This change creates a simple format for a contiguously stored property
file, and adds the support for arbitrary characters in the names of
persistent properties, which previously had been restricted. It has a
mechanism for converting older devices to the new format as well.
Bug: 64392887
Test: boot bullhead with new properties
Test: boot bullhead and verify old properties are converted to the new
property file
Test: corrupt property file and ensure that it gets recovered from memory
Test: new unit tests
Change-Id: I60d8201d655ce5c97b33faae81d5ca8dbbb21a14
Add a new service option, `rlimit` that allows a given rlimit to be
set for a specific service instead of globally.
Use the same parsing, now allowing text such as 'cpu' or 'rtprio'
instead of relying on the enum value for the `setrlimit` builtin
command as well.
Bug: 63882119
Bug: 64894637
Test: boot bullhead, run a test app that attempts to set its rtprio to
95, see that the priority set fails normally but passes when
`rlimit rtprio 99 99` is used as its service option.
See that this fails when `rlimit rtprio 50 50` is used as well.
Test: new unit tests
Change-Id: I4a13ca20e8529937d8b4bc11718ffaaf77523a52
Child processes inherit the signal handlers and the 'Aborter' for
logging from their parent process. In the case of init, fork()'ed
processes, will attempt to reboot the system if they receive a fatal
signal or if they call LOG(FATAL). This is not the correct behavior;
these processes should terminate due to the provided signal like other
processes on the system.
This is particularly important as there are multiple LOG(FATAL) calls
in service.cpp for failures after fork() but before execv() when a
service is started.
Note, that pthread_atfork() is not a viable solution since clone() is
used in some cases instead of fork() and atfork handlers are not
called with clone().
Test: LOG(FATAL) from a child process of init and see that it
terminates due to a signal correctly
Test: LOG(FATAL) from init proper and see that it reboots to the
bootloader
Change-Id: I875ebd7a5f6b3f5e3e2c028af3306917c4409db3
1) Attempt to make the error message associated with a missing service
better.
2) Provide a link to more in-depth documentation.
Bug: 65023716
Test: code compiles.
Change-Id: Ie0f1896fb41d5afd11501f046cb51d4c8afe0a62
The move to returning Result from Service::Start() for better context
when starting process through init's builtins stops Service::Start()
failures from being logged from other contexts. This change adds
those logs along with their context.
Test: boot bullhead, fail to start services via `setprop ctl.start`,
see the expected error in dmesg
Change-Id: I45294f6abf00852f3d4c549a32eaf4920a51e6f0
Switch from /data/misc/reboot/last_reboot_reason to persistent
Android property persist.sys.boot.reason for indicating why the
device is rebooted or shutdown.
persist.sys.boot.reason has a standard as outlined in b/63736262 and
the associated investigation. Made adjustments to the values so that
we did not create a problem even before we started. Compliance is
part of the tests in boot_reason_test.sh.
Test: system/core/bootstat/boot_reason_test.sh
Bug: 64687998
Change-Id: I812c55a12faf7cb7ff92101009be058ad9958d07
With full disk encryption, a temporary /data partition is mounted to
start a minimum subset of the frameworks. Later, once /data can be
decrypted it is mounted again. load_persist_props is called both when
the temporary /data partition is mounted and again after the real
/data is mounted; this is a mistake.
This change checks to see if we're a FDE device and if so, returns the
first time load_persist_props is called.
Test: boot bullhead (FDE) with and without boot pin and check that
persistent properties are loaded
Test: boot sailfish (FBE) and check that persistent properties are loaded
Change-Id: I6ed725072bdb27d80bfa6575d0a4876b08c6a4bc
Enable error reporting when builtin functions fail. These errors are
now reported with full context including the source file and line
number, e.g.
init: Command 'write /sys/module/subsystem_restart/parameters/enable_debug ${persist.sys.ssr.enable_debug}' action=early-boot (/init.bullhead.rc:84) took 0ms and failed: cannot expand '${persist.sys.ssr.enable_debug}'
There are two small caveats:
1) There are nearly 200 reports of builtins failure due to "No such
file or directory". Many of these are due to legacy paths included
in rootdir/init.rc. Until they are cleaned up, reporting of these
failures is disabled.
2) Similarly, symlink is often used to create backwards compatible
symlinks. By their very nature, these calls are expected to fail
on newer systems that do already use the new path. Due to this,
failures of symlink due to EEXIST are not reported.
Bug: 38038887
Test: boot bullhead, only see true errors reported from builtins.
Change-Id: I316c13e3adc992cacc6d79ffee987adc8738fca0
Log Service failures via Result<T> such that their context can be
captured when interacting with services through builtin functions.
Test: boot bullhead
Change-Id: I4d99744d64008d4a06a404e3c9817182c6e177bc
Result<T> currently has two problems,
1) A failing Result<T> cannot be easily constructed from a Result<U>'s
error.
2) errno is lost when passing .error() through multiple Result<T>'s
This change fixes both problems having Result<T>::error() return a
ResultError class that contains the std::string error message and int
errno.
It additionally has ostream operators to continue to allow printing
the error string directly to an ostream and also to pass the errno
through to another Result<T> class via Error() creation.
Lastly, it provides a new constructor for Result<T> for ResultError,
such that a Result<T> can be constructed from Result<U>::error().
Test: boot bullhead, init unit tests
Change-Id: Id9614b727cdabd2f5498b0da0e598e9aff7d9ae0
Init keep its own copy of the environment that it uses for execve when
starting services. This is unnecessary however as libc already has
functions that mutate the environment and the environment that init
uses is clean for starting services. This change removes init's copy
of the environment and uses the libc functions instead.
This also makes small clean-up to the way the Service class stores
service specific environment variables.
Test: boot bullhead
Change-Id: I7c98a0b7aac9fa8f195ae33bd6a7515bb56faf78
Tom Cherry