Test: boot bullhead
Test: Introduce LOG(FATAL) at various points of init and ensure that
it reboots to the bootloader successfully
Test: Introduce LOG(FATAL) during DoReboot() and ensure that it reboots
instead of recursing infinitely
Test: Ensure that fatal signals reboot to bootloader
Change-Id: I409005b6fab379df2d635e3e33d2df48a1a97df3
init tries to propagate error information up to build context before
logging errors. This is a good thing, however too often init has the
overly verbose paradigm for error handling, below:
bool CalculateResult(const T& input, U* output, std::string* err)
bool CalculateAndUseResult(const T& input, std::string* err) {
U output;
std::string calculate_result_err;
if (!CalculateResult(input, &output, &calculate_result_err)) {
*err = "CalculateResult " + input + " failed: " +
calculate_result_err;
return false;
}
UseResult(output);
return true;
}
Even more common are functions that return only true/false but also
require passing a std::string* err in order to see the error message.
This change introduces a Result<T> that is use to either hold a
successful return value of type T or to hold an error message as a
std::string. If the functional only returns success or a failure with
an error message, Result<Success> may be used. The classes Error and
ErrnoError are used to indicate a failed Result<T>.
A successful Result<T> is constructed implicitly from any type that
can be implicitly converted to T or from the constructor arguments for
T. This allows you to return a type T directly from a function that
returns Result<T>.
Error and ErrnoError are used to construct a Result<T> has
failed. Each of these classes take an ostream as an input and are
implicitly cast to a Result<T> containing that failure. ErrnoError()
additionally appends ": " + strerror(errno) to the end of the failure
string to aid in interacting with C APIs.
The end result is that the above code snippet is turned into the much
clearer example below:
Result<U> CalculateResult(const T& input);
Result<Success> CalculateAndUseResult(const T& input) {
auto output = CalculateResult(input);
if (!output) {
return Error() << "CalculateResult " << input << " failed: "
<< output.error();
}
UseResult(*output);
return Success();
}
This change also makes this conversion for some of the util.cpp
functions that used the old paradigm.
Test: boot bullhead, init unit tests
Merged-In: I1e7d3a8820a79362245041251057fbeed2f7979b
Change-Id: I1e7d3a8820a79362245041251057fbeed2f7979b
This change splits out the selinux initialization and supporting
functionality into selinux.cpp and splits the security related
initialization of the rng, etc to security.cpp. It also provides
additional documentation for SEPolicy loading as this has been
requested by some teams.
It additionally cleans up sehandle and sehandle_prop. The former is
static within selinux.cpp and new wrapper functions are created around
selabel_lookup*() to better serve the users. The latter is moved to
property_service.cpp as it is isolated to that file for its usage.
Test: boot bullhead
Merged-In: Idc95d493cebc681fbe686b5160502f36af149f60
Change-Id: Idc95d493cebc681fbe686b5160502f36af149f60
On platforms that use ACPI instead of Device Tree (DT), such as
Ranchu x86/x86_64, /proc/device-tree/firmware/android/ does not
exist. As a result, Android O is unable to mount /system, etc.
at the first stage of init:
init: First stage mount skipped (missing/incompatible fstab in
device tree)
Those platforms may create another directory that mimics the layout
of the standard DT directory in procfs, and store early mount
configuration there. E.g., Ranchu x86/x86_64 creates one in sysfs
using information encoded in the ACPI tables:
https://android-review.googlesource.com/442472https://android-review.googlesource.com/443432https://android-review.googlesource.com/442393https://android-review.googlesource.com/442395
Therefore, instead of hardcoding the Android DT path, load it from
the kernel command line using a new Android-specific property key
("androidboot.android_dt_dir"). If no such property exists, fall
back to the standard procfs path (so no change is needed for DT-
aware platforms).
Note that init/ and fs_mgr/ each have their own copy of the Android
DT path, because they do not share any global state. A future CL
should remove the duplication by refactoring.
With this CL as well as the above ones, the said warning is gone,
but early mount fails. That is a separate bug, though, and will be
addressed by another CL.
Test: Boot patched sdk_phone_x86-userdebug system image with patched
Goldfish 3.18 x86 kernel in patched Android Emulator, verify
the "init: First stage mount skipped" warning no longer shows
in dmesg.
Change-Id: Ib6df577319503ec1ca778de2b5458cc72ce07415
Signed-off-by: Yu Ning <yu.ning@intel.com>
restorecon() has become nothing more than a small wrapper around
selinux_android_restore(). This itself isn't super problematic, but
it is an obstacle for compiling util.cpp on the host as that function
is not available on the host.
Bug: 36970783
Test: Boot bullhead
Merged-In: I7e209ece6898f9a0d5eb9e5d5d8155c2f1ba9faf
Change-Id: I7e209ece6898f9a0d5eb9e5d5d8155c2f1ba9faf
In the init scripts for socket, the type can have a suffix of
"+passcred" to request that the socket be bound to report SO_PASSCRED
credentials as part of socket transactions.
Test: gTest logd-unit-tests --gtest_filter=logd.statistics right after boot
(fails without logd.rc change)
Bug: 37985222
Change-Id: Ie5b50e99fb92fa9bec9a32463a0e6df26a968bfd
Their callers may be able to add more context, so use an error string
to record the error.
Bug: 38038887
Test: boot bullhead
Test: Init unit tests
Change-Id: I46690d1c66e00a4b15cadc6fd0d6b50e990388c3
Check the result of DecodeUid() and return failure when uids/gids are
unable to be decoded.
Also, use an error string instead of logging directly such that more
context can be added when decoding fails.
Bug: 38038887
Test: Boot bullhead
Test: Init unit tests
Change-Id: I84c11aa5a8041bf5d2f754ee9af748344b789b37
Init exposes a global 'sehandle' that ueventd references as part of
devices.cpp and util.cpp. This is particularly dangerous in
device_init() in which both uevent and init write to this global.
This change creates a separate local copy for devices.cpp and puts
restrictions on where init.h can be included to make sure the global
used by init is not reference by non-init code. Future changes to
init should remove this global.
Test: Boot bullhead
Change-Id: Ifefa9e1932e9d647d06cca2618f5c8e5a7a85460
Also renames "early mount" to "first stage mount" to prevent confusion
with "mount_all --early", which is run in the init second stage.
Also creates a base class: FirstStageMount and two derived classes:
FirstStageMountVBootV1 and FirstStageMountVBootV2 to replace/refactor
existing functions:
- early_mount() -> DoFirstStageMount() and FirstStageMount::DoFirstStageMount()
- vboot_1_0_early_partitions -> FirstStageMountVBootV1::GetRequiredDevices()
- vboot_2_0_early_partitions -> FirstStageMountVBootV2::GetRequiredDevices()
- vboot_1_0_mount_partitions ->
FirstStageMount::MountPartitions() and
FirstStageMountVBootV1::SetUpDmVerity()
- vboot_2_0_mount_partitions ->
FirstStageMount::MountPartitions() and
FirstStageMountVBootV2::SetUpDmVerity()
Bug: 37413399
Test: first stage mount /vendor with vboot 2.0 (avb) on bullhead
Test: first stage mount /system with without verity on bullhead
Test: first stage mount /vendor with with vboot 1.0 on sailfish
Change-Id: I6584bdf7d832c9fbc8740f97c9b8b94e68a90783
The content parameter of write_file() previously took a char* that was
then converted to a std::string in WriteStringToFd(). One unfortunate
effect of this, is that it is impossible to write data that contains
'\0' within it, as the new string will only contain characters up
until the '\0'.
This changes write_file() to take an std::string, such that
std::string::size() is used to determine the length of the string,
allowing it to contain null characters.
Also change the path parameter of read_file() and write_file() for
consistency.
Lastly, add a test for handling strings with '\0' in them.
Bug: 36726045
Test: Boot bullhead, run unit tests
Change-Id: Idad60e4228ee2de741ab3ab6a4917065b5e63cd8
Use this for bootstat and init. This replaces the custom uptime parser in
bootstat.
This is a reland of aosp/338325 with a stubbed implementation for Darwin.
This change also has clang_format fixes (automatic).
Bug: 34352037
Test: chrono_utils_test
Change-Id: I72a62a3ca1ccfc0a4ccc6294ff1776c263144686
- Emergency shutdown just marks the fs as clean while leaving fs
in the middle of any state. Do not use it anymore.
- Changed android_reboot to set sys.powerctl property so that
all shutdown can be done by init.
- Normal reboot sequence changed to
1. Terminate processes (give time to clean up). And wait for
completion based on ro.build.shutdown_timeout.
Default value (when not set) is changed to 3 secs. If it is 0, do not
terminate processes.
2. Kill all remaining services except critical services for shutdown.
3. Shutdown vold using "vdc volume shutdown"
4. umount all emulated partitions. If it fails, just detach.
Wait in step 5 can handle it.
5. Try umounting R/W block devices for up to max timeout.
If it fails, try DETACH.
If umount fails to complete before reboot, it can be detected when
system reboots.
6. Reboot
- Log shutdown time and umount stat to log so that it can be collected after reboot
- To umount emulated partitions, all pending writes inside kernel should
be completed.
- To umount /data partition, all emulated partitions on top of /data should
be umounted and all pending writes should be completed.
- umount retry will only wait up to timeout. If there are too many pending
writes, reboot will discard them and e2fsck after reboot will fix any file system
issues.
bug: 36004738
bug: 32246772
Test: many reboots combining reboot from UI and adb reboot. Check last_kmsg and
fs_stat after reboot.
Change-Id: I6e74d6c68a21e76e08cc0438573d1586fd9aaee2
Use this for bootstat and init. This replaces the custom uptime parser in
bootstat.
This is a reland of aosp/332854 with a fix for Darwin.
Bug: 34352037
Test: chrono_utils_test
Change-Id: Ib2567d8df0e460ab59753ac1c053dd7f9f1008a7
* Nanosecond precision ended up being harder to grok.
* This change modifies the Timer class to have duration_ms instead of
duration_ns.
Bug: 34466121
Test: adb logcat | grep bootstat
Change-Id: Ibd1c27dc3cb29d838a956e342281b2fb98d752a6
The mismatch of return values makes reasoning about the correctness of
CLs like https://android-review.googlesource.com/317923 quite hard.
Bug: 33941660
Test: Init builds, HiKey boots.
Change-Id: Ia4b8a9af420682997b154a594892740181980921
Mixing open or create, along with attribute(MAC) and permissions(DAC)
is a security and confusion issue.
Fix an issue where fcntl F_SETFD was called to clear O_NONBLOCK, when
it should have been F_SETFL. Did not present a problem because the
current user of this feature does writes and control messages only.
Test: gTest logd-unit-tests and check dmesg for logd content.
Bug: 32450474
Bug: 33242020
Change-Id: I23cb9a9be5ddb7e8e9c58c79838bc07536e766e6
Use to solve the problem of tracefs conditionally being mounted
under debugfs and needing restorecon'd without boot performance
penalty.
Also move skip-ce to a flag for consistency.
Test: Check that trace_mount has correct attributes after boot
Bug: 32849675
Change-Id: Ib6731f502b6afc393ea5ada96fa95b339f14da49
On FBE devices, the filenames inside credential-encrypted directories
are mangled until the key is installed. This means the initial
restorecon at boot needs to skip these directories until the keys
are installed.
This CL changes the implementation of the "restorecon_recursive"
built-in command to use the new SKIPCE flag to avoid labeling files
in CE directories. vold will request a restorecon when the keys
are actually installed.
(cherrypicked from commit 1635afe83d)
Bug: 30126557
Test: Cherry-picked from master
Change-Id: I320584574a4d712c493b5bbd8a79b56c0c04aa58
With this change, init sets a property "init.start" to show the
CLOCK_BOOTTIME time at which init itself started, and for each service
an "init.svc.<name>.start" property to show the CLOCK_BOOTTIME time at
which that service was most recently started.
These times can be used by tools like bootstat to track boot time.
As part of this change, move init over to std::chrono. Also, rather than
make the command-line argument handling more complex, I've switched to
using an environment variable for communication between first- and
second-stage init, and added another environment variable to pass the
start time of the first stage through to the second stage.
Bug: http://b/32780225
Test: manual
Change-Id: Ia65a623e1866ea688b9a5433d6507926ce301dfe
Solve one more issue where privilege is required to open a file and
we do not want to grant such to the service. This is the service side
of the picture, android_get_control_file() in libcutils is the client.
The file's descriptor is placed into the environment as
"ANDROID_FILE_<path>". For socket and files where non-alpha and
non-numeric characters in the <name/path> are replaced with _. There
was an accompanying change in android_get_control_socket() to match
in commit 'libcutils: add android_get_control_socket() test'
Add a gTest unit test for this that tests create_file and
android_get_control_file().
Test: gTest init_tests --gtest_filter=util.create_file
Bug: 32450474
Change-Id: I96eb970c707db6d51a9885873329ba1cb1f23140
* Use const reference type for parameters to avoid unnecessary copy.
* Suppress warning of not using faster overloaded string find function.
Bug: 30407689
Bug: 30411878
Change-Id: I6cfdbbd50cf5e8f3db6e5263076d3a17a9a791ee
Test: build with WITH_TIDY=1
Merged-In: Ie79dbe21899867bc62031f8618bb1322b8071525
I'll come back and remove klog_init when I've removed other calls to it.
Change-Id: Iad7fd26d853b4ddc54e9abd44516b6f138cbbfcb
Test: booted N9, looked at "adb shell dmesg" output.
Create a Parser class that uses multiple SectionParser interfaces to
handle parsing the different sections of an init rc.
Create an ActionParser and ServiceParser that implement SectionParser
and parse the sections corresponding to Action and Service
classes.
Remove the legacy keyword structure and replace it with std::map's
that map keyword -> (minimum args, maximum args, function pointer) for
Commands and Service Options.
Create an ImportParser that implements SectionParser and handles the
import 'section'.
Clean up the unsafe memory handling of the Action class by using
std::unique_ptr.
Change-Id: Ic5ea5510cb956dbc3f78745a35096ca7d6da7085
Support added so init scripts can now import directories.
BUG: 22721249
Change-Id: I02b566bfb50ea84469f1ea0c6ad205435a1df286
TEST: Tested importing a folder on arm64 emulator
Helped debug a problem where the N9 bootloader incorrectly
concatenated the various command lines.
Bug: http://b/20906691
Change-Id: I0580b06f4185129c7eedf0bdf74b5ce17f88bf9c
Don't double mount /dev and its subdirectories anymore. Instead, the
first stage init is solely responsible for mounting it.
Don't have init prepare the property space. This is the responsibility
of the second stage init.
Don't have SELinux use the property space to determine how we should
be running. Instead, create a new function and extract the data we
need directly from /proc/cmdline. SELinux needs this information in
the first stage init process where the property service isn't available.
Change-Id: I5b4f3bec79463a7381a68f30bdda78b5cc122a96
Move fastboot's format logic into fs_mgr, to consolidate the knowledge
about how to do this (and when to wipe metadata).
Try to format these formattable paritions if they are wiped.
If formatting fails, we will fall out to let recovery mode handle it.
Bug: 20082763
Change-Id: I397cc197550e78d932e8a154fd234695c46dbe7b
Also make important events in init's life NOTICE rather than INFO,
and ensure that NOTICE events actually make it to the kernel log.
Also fix the logging so that if you have a printf format string
error, the compiler now catches it.
Also give messages from init, ueventd, and watchdogd distinct tags.
(Previously they'd all call themselves "init", and dmesg doesn't
include pids, so you couldn't untangle them.)
Also include the tag in SELinux messages.
Bug: 19544788
Change-Id: Ica6daea065bfdb80155c52c0b06f346a7df208fe
