starnix_kernel_runner/
features.rs

1// Copyright 2021 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use crate::ContainerStartInfo;
6use anyhow::{Context, Error, anyhow};
7use fidl_fuchsia_ui_composition as fuicomposition;
8use fidl_fuchsia_ui_input3 as fuiinput;
9use fidl_fuchsia_ui_policy as fuipolicy;
10use fidl_fuchsia_ui_views as fuiviews;
11use starnix_consent_sync::init as consent_sync_init;
12use starnix_container_structured_config::Config as ContainerStructuredConfig;
13use starnix_core::device::block::add_mmc_block_device;
14use starnix_core::mm::MlockPinFlavor;
15use starnix_core::task::{Kernel, KernelFeatures, SystemLimits, ThreadLockupDetector};
16use starnix_core::vfs::FsString;
17use starnix_features::Feature;
18use starnix_logging::log_error;
19use starnix_modules_android_usb::usb_device_init;
20use starnix_modules_ashmem::ashmem_device_init;
21use starnix_modules_boot::booted_device_init;
22use starnix_modules_fastrpc::fastrpc_device_init;
23use starnix_modules_framebuffer::{AspectRatio, Framebuffer};
24use starnix_modules_gpu::gpu_device_init;
25use starnix_modules_gralloc::gralloc_device_init;
26use starnix_modules_hvdcp_opti::hvdcp_opti_init;
27use starnix_modules_input::uinput::register_uinput_device;
28use starnix_modules_input::{
29    DEFAULT_KEYBOARD_DEVICE_ID, DEFAULT_MOUSE_DEVICE_ID, DEFAULT_TOUCH_DEVICE_ID, EventProxyMode,
30    InputDevice, new_input_relay,
31};
32use starnix_modules_kgsl::kgsl_device_init;
33use starnix_modules_magma::magma_device_init;
34use starnix_modules_nanohub::nanohub_device_init;
35use starnix_modules_nmfs::nmfs_init;
36use starnix_modules_perfetto_consumer::start_perfetto_consumer_thread;
37use starnix_modules_thermal::{cooling_device_init, thermal_device_init};
38use starnix_modules_touch_power_policy::TouchPowerPolicyDevice;
39use starnix_modules_wakeup_test::register_wakeup_test_device;
40use std::sync::Arc;
41
42use starnix_uapi::error;
43use starnix_uapi::errors::Errno;
44
45/// A collection of parsed features, and their arguments.
46#[derive(Default, Debug)]
47pub struct Features {
48    /// Features that must be available to the kernel after initialization.
49    pub kernel: KernelFeatures,
50
51    /// SELinux configuration.
52    pub selinux: SELinuxFeature,
53
54    /// Limits value passed to the kernel during the initialization.
55    pub system_limits: SystemLimits,
56
57    /// Whether to enable ashmem.
58    pub ashmem: bool,
59
60    /// Whether to enable a boot notifier device.
61    pub boot_notifier: bool,
62
63    /// Whether to enable consent sync.
64    pub data_collection_consent_sync: bool,
65
66    /// Whether to boost CPU for a fixed duration.
67    pub boot_notifier_cpu_boost: Option<zx::MonotonicDuration>,
68
69    /// Whether to enable a framebuffer device.
70    pub framebuffer: bool,
71
72    /// Display aspect ratio.
73    pub aspect_ratio: Option<AspectRatio>,
74
75    /// This controls whether or not the default framebuffer background is black or colorful, to
76    /// aid debugging.
77    pub enable_visual_debugging: bool,
78
79    /// The value of the initial view ID annotation.
80    pub initial_view_id_annotation: String,
81
82    /// Whether to enable gralloc.
83    pub gralloc: bool,
84
85    /// Whether to enable the Kernel Graphics Support Layer (kgsl) device used by Adreno GPUs.
86    pub kgsl: bool,
87
88    /// Supported magma vendor IDs.
89    pub magma_supported_vendors: Option<Vec<u16>>,
90
91    /// Whether to enable gfxstream.
92    pub gfxstream: bool,
93
94    /// Include the /container directory in the root file system.
95    pub container: bool,
96
97    /// Include the /test_data directory in the root file system.
98    pub test_data: bool,
99
100    /// Include the /custom_artifacts directory in the root file system.
101    pub custom_artifacts: bool,
102
103    /// Whether to provide android with a serial number.
104    pub android_serialno: bool,
105
106    /// Optional perfetto configuration.
107    pub perfetto: Option<FsString>,
108
109    /// Whether to allow the root filesystem to be read/write.
110    pub rootfs_rw: bool,
111
112    /// Whether to enable network manager and its filesystem.
113    pub network_manager: bool,
114
115    /// Whether to enable the nanohub module.
116    pub nanohub: bool,
117
118    /// Whether to enable the fastrpc module.
119    pub fastrpc: bool,
120
121    pub enable_utc_time_adjustment: bool,
122
123    pub thermal: bool,
124
125    /// Optional cooling features to enable. See [`cooling_device_init`] for a list of possible
126    /// values and their parameters.
127    pub cooling: Option<Vec<String>>,
128
129    /// Whether to add android bootreason to kernel cmdline.
130    pub android_bootreason: bool,
131
132    pub hvdcp_opti: bool,
133
134    pub additional_mounts: Option<Vec<String>>,
135
136    /// Support kernel level suspend/resume tests.
137    pub wakeup_test: bool,
138
139    /// Add a stub block device entry for mmcblk0. This is required for certain containers that
140    /// query certain functionality based on block device naming.
141    pub mmcblk_stub: bool,
142
143    /// Whether to initialize Android-compatible USB monitoring sysfs logic.
144    pub android_usb: bool,
145}
146
147#[derive(Default, Debug, PartialEq)]
148pub struct SELinuxFeature {
149    /// True if SELinux should be enabled in the container.
150    pub enabled: bool,
151
152    /// Optional set of options to pass to the SELinux module.
153    pub options: String,
154
155    /// Optional set of access-check exceptions to pass to the SELinux module.
156    pub exceptions: Vec<String>,
157}
158
159impl Features {
160    pub fn record_inspect(&self, parent_node: &fuchsia_inspect::Node) {
161        parent_node.record_child("features", |inspect_node| match self {
162            Features {
163                kernel:
164                    KernelFeatures {
165                        bpf_v2,
166                        enable_suid,
167                        io_uring,
168                        error_on_failed_reboot,
169                        default_uid,
170                        default_seclabel,
171                        selinux_test_suite,
172                        default_ns_mount_options,
173                        mlock_always_onfault,
174                        mlock_pin_flavor,
175                        crash_report_throttling,
176                        wifi,
177                        cached_zx_map_info_bytes,
178                        dirent_cache_size,
179                        fake_ion,
180                    },
181                system_limits,
182                selinux,
183                ashmem,
184                boot_notifier,
185                boot_notifier_cpu_boost,
186                data_collection_consent_sync,
187                framebuffer,
188                aspect_ratio,
189                enable_visual_debugging,
190                gralloc,
191                kgsl,
192                magma_supported_vendors,
193                gfxstream,
194                container,
195                test_data,
196                custom_artifacts,
197                android_serialno,
198                perfetto,
199                rootfs_rw,
200                network_manager,
201                nanohub,
202                fastrpc,
203                enable_utc_time_adjustment,
204                thermal,
205                cooling,
206                android_bootreason,
207                hvdcp_opti,
208                additional_mounts,
209                wakeup_test,
210                mmcblk_stub,
211                android_usb,
212                initial_view_id_annotation,
213            } => {
214                inspect_node.record_bool("selinux", selinux.enabled);
215                inspect_node.record_bool("ashmem", *ashmem);
216                inspect_node.record_bool("boot_notifier", *boot_notifier);
217                inspect_node.record_string(
218                    "initial_view_id_annotation",
219                    initial_view_id_annotation.as_str(),
220                );
221                inspect_node
222                    .record_bool("data_collection_consent_sync", *data_collection_consent_sync);
223                inspect_node.record_string(
224                    "boot_notifier_cpu_boost",
225                    boot_notifier_cpu_boost
226                        .map(|d| format!("{}s", d.into_seconds()))
227                        .unwrap_or_else(|| "none".to_string()),
228                );
229                inspect_node.record_bool("framebuffer", *framebuffer);
230                inspect_node.record_bool("gralloc", *gralloc);
231                inspect_node.record_bool("kgsl", *kgsl);
232                inspect_node.record_string(
233                    "magma_supported_vendors",
234                    match magma_supported_vendors {
235                        Some(vendors) => vendors
236                            .iter()
237                            .map(|vendor| format!("0x{:x}", vendor))
238                            .collect::<Vec<String>>()
239                            .join(","),
240                        None => "".to_string(),
241                    },
242                );
243                inspect_node.record_bool("gfxstream", *gfxstream);
244                inspect_node.record_bool("container", *container);
245                inspect_node.record_bool("test_data", *test_data);
246                inspect_node.record_bool("custom_artifacts", *custom_artifacts);
247                inspect_node.record_bool("android_serialno", *android_serialno);
248                inspect_node.record_string(
249                    "aspect_ratio",
250                    aspect_ratio
251                        .as_ref()
252                        .map(|aspect_ratio| {
253                            format!("width: {} height: {}", aspect_ratio.width, aspect_ratio.height)
254                        })
255                        .unwrap_or_default(),
256                );
257                inspect_node.record_string(
258                    "perfetto",
259                    perfetto.as_ref().map(|p| p.to_string()).unwrap_or_default(),
260                );
261                inspect_node.record_bool("rootfs_rw", *rootfs_rw);
262                inspect_node.record_bool("network_manager", *network_manager);
263                inspect_node.record_bool("nanohub", *nanohub);
264                inspect_node.record_bool("fastrpc", *fastrpc);
265                inspect_node.record_bool("thermal", *thermal);
266                inspect_node.record_string(
267                    "cooling",
268                    match cooling {
269                        Some(devices) => devices.join(","),
270                        None => "".to_string(),
271                    },
272                );
273                inspect_node.record_bool("android_bootreason", *android_bootreason);
274                inspect_node.record_bool("hvdcp_opti", *hvdcp_opti);
275                inspect_node.record_string("ping_group_range", {
276                    let range = system_limits.socket.icmp_ping_gids.lock();
277                    std::format!("{},{}", range.start, range.end - 1)
278                });
279
280                inspect_node.record_child("kernel", |kernel_node| {
281                    kernel_node.record_bool("bpf_v2", *bpf_v2);
282                    kernel_node.record_bool("enable_suid", *enable_suid);
283                    kernel_node.record_bool("io_uring", *io_uring);
284                    kernel_node.record_bool("error_on_failed_reboot", *error_on_failed_reboot);
285                    kernel_node.record_bool("enable_visual_debugging", *enable_visual_debugging);
286                    kernel_node.record_int("default_uid", (*default_uid).into());
287                    kernel_node.record_string(
288                        "default_seclabel",
289                        default_seclabel.as_deref().unwrap_or_default(),
290                    );
291                    kernel_node.record_bool("selinux_test_suite", *selinux_test_suite);
292                    kernel_node.record_bool("crash_report_throttling", *crash_report_throttling);
293                    kernel_node
294                        .record_uint("cached_zx_map_info_bytes", *cached_zx_map_info_bytes as u64);
295                    inspect_node.record_string(
296                        "default_ns_mount_options",
297                        format!("{:?}", default_ns_mount_options),
298                    );
299                    inspect_node
300                        .record_bool("enable_utc_time_adjustment", *enable_utc_time_adjustment);
301                    inspect_node.record_bool("mlock_always_onfault", *mlock_always_onfault);
302                    inspect_node
303                        .record_string("mlock_pin_flavor", format!("{:?}", mlock_pin_flavor));
304                    inspect_node.record_bool("wifi", *wifi);
305                    inspect_node
306                        .record_string("additional_mounts", format!("{:?}", additional_mounts));
307                    inspect_node.record_uint("dirent_cache_size", *dirent_cache_size as u64);
308                    inspect_node.record_bool("wakeup_test", *wakeup_test);
309                    inspect_node.record_bool("mmcblk_stub", *mmcblk_stub);
310                    inspect_node.record_bool("android_usb", *android_usb);
311                    inspect_node.record_bool("fake_ion", *fake_ion);
312                });
313            }
314        });
315    }
316}
317
318/// Parses all the featurse in `entries`.
319///
320/// Returns an error if parsing fails, or if an unsupported feature is present in `features`.
321pub fn parse_features(
322    start_info: &ContainerStartInfo,
323    kernel_extra_features: &[String],
324) -> Result<Features, Error> {
325    let ContainerStructuredConfig {
326        crash_report_throttling,
327        enable_utc_time_adjustment,
328        extra_features,
329        cached_zx_map_info_bytes,
330        mlock_always_onfault,
331        mlock_pin_flavor,
332        selinux_exceptions,
333        ui_visual_debugging_level,
334        additional_mounts,
335        dirent_cache_size,
336        initial_view_id_annotation,
337    } = &start_info.config;
338
339    let mut features = Features::default();
340    for entry in start_info
341        .program
342        .features
343        .iter()
344        .chain(kernel_extra_features.iter())
345        .chain(extra_features.iter())
346    {
347        let (feature, raw_args) = Feature::try_parse_feature_and_args(entry)?;
348        match (feature, raw_args) {
349            (Feature::AndroidSerialno, _) => features.android_serialno = true,
350            (Feature::AndroidBootreason, _) => features.android_bootreason = true,
351            (Feature::AspectRatio, Some(args)) => {
352                let e = anyhow!("Invalid aspect_ratio: {:?}", args);
353                let components: Vec<_> = args.split(':').collect();
354                if components.len() != 2 {
355                    return Err(e);
356                }
357                let width: u32 =
358                    components[0].parse().map_err(|_| anyhow!("Invalid aspect ratio width"))?;
359                let height: u32 =
360                    components[1].parse().map_err(|_| anyhow!("Invalid aspect ratio height"))?;
361                features.aspect_ratio = Some(AspectRatio { width, height });
362            }
363            (Feature::AspectRatio, None) => {
364                return Err(anyhow!(
365                    "Aspect ratio feature must contain the aspect ratio in the format: aspect_ratio:w:h"
366                ));
367            }
368            (Feature::Container, _) => features.container = true,
369            (Feature::CustomArtifacts, _) => features.custom_artifacts = true,
370            (Feature::Ashmem, _) => features.ashmem = true,
371            (Feature::BootNotifier, _) => features.boot_notifier = true,
372            (Feature::DataCollectionConsentSync, _) => features.data_collection_consent_sync = true,
373            (Feature::BootNotifierCpuBoost, Some(arg)) => {
374                let duration = zx::MonotonicDuration::from_seconds(arg.parse::<i64>()?);
375                features.boot_notifier_cpu_boost = Some(duration);
376            }
377            (Feature::BootNotifierCpuBoost, None) => {
378                return Err(anyhow!(
379                    "boot_notifier_cpu_boost feature must have an argument (e.g. \"boot_notifier_cpu_boost:60\")"
380                ));
381            }
382            (Feature::Framebuffer, _) => features.framebuffer = true,
383            (Feature::Gralloc, _) => features.gralloc = true,
384            (Feature::Kgsl, _) => features.kgsl = true,
385            (Feature::Magma, _) => {
386                if features.magma_supported_vendors.is_none() {
387                    const VENDOR_ARM: u16 = 0x13B5;
388                    const VENDOR_INTEL: u16 = 0x8086;
389                    features.magma_supported_vendors = Some(vec![VENDOR_ARM, VENDOR_INTEL])
390                }
391            }
392            (Feature::MagmaSupportedVendors, Some(arg)) => {
393                features.magma_supported_vendors = Some(
394                    arg.split(',')
395                        .map(|s| {
396                            let err = anyhow!(
397                                "Feature format must be: magma_supported_vendors:0x1234[,0xabcd]"
398                            );
399                            let trimmed = s.trim_start_matches("0x");
400                            u16::from_str_radix(trimmed, 16).map_err(|_| err)
401                        })
402                        .collect::<Result<Vec<u16>, Error>>()?,
403                );
404            }
405            (Feature::MagmaSupportedVendors, None) => {
406                return Err(anyhow!(
407                    "Feature format must be: magma_supported_vendors:0x1234[,0xabcd]"
408                ));
409            }
410            (Feature::Nanohub, _) => features.nanohub = true,
411            (Feature::Fastrpc, _) => features.fastrpc = true,
412            (Feature::NetworkManager, _) => features.network_manager = true,
413            (Feature::Gfxstream, _) => features.gfxstream = true,
414            (Feature::Bpf, Some(version)) => features.kernel.bpf_v2 = version == "v2",
415            (Feature::Bpf, None) => {
416                return Err(anyhow!("bpf feature must have an argument (e.g. \"bpf:v2\")"));
417            }
418            (Feature::EnableSuid, _) => features.kernel.enable_suid = true,
419            (Feature::IoUring, _) => features.kernel.io_uring = true,
420            (Feature::ErrorOnFailedReboot, _) => features.kernel.error_on_failed_reboot = true,
421            (Feature::Perfetto, Some(socket_path)) => {
422                features.perfetto = Some(socket_path.into());
423            }
424            (Feature::Perfetto, None) => {
425                return Err(anyhow!("Perfetto feature must contain a socket path"));
426            }
427            (Feature::PingGroupRange, Some(arg)) => {
428                let mut args = arg.split(',');
429                let (min, max) = (|| {
430                    let min = args.next()?.trim_ascii().parse::<u32>().ok()?;
431                    let max = args.next()?.trim_ascii().parse::<u32>().ok()?.checked_add(1)?;
432                    if args.next().is_some() {
433                        return None;
434                    }
435                    Some((min, max))
436                })()
437                .ok_or_else(|| anyhow!("Feature format must be: ping_group_range:0,100"))?;
438                *features.system_limits.socket.icmp_ping_gids.lock() = min..max;
439            }
440            (Feature::PingGroupRange, None) => {
441                return Err(anyhow!("Feature format must be: ping_group_range:0,100"));
442            }
443            (Feature::RootfsRw, _) => features.rootfs_rw = true,
444            (Feature::Selinux, arg) => {
445                features.selinux = SELinuxFeature {
446                    enabled: true,
447                    options: arg.unwrap_or_default(),
448                    exceptions: selinux_exceptions.clone(),
449                };
450            }
451            (Feature::SelinuxTestSuite, _) => features.kernel.selinux_test_suite = true,
452            (Feature::TestData, _) => features.test_data = true,
453            (Feature::Thermal, _) => features.thermal = true,
454            (Feature::Cooling, Some(arg)) => {
455                features.cooling = Some(arg.split(',').map(String::from).collect::<Vec<String>>())
456            }
457            (Feature::Cooling, None) => {
458                return Err(anyhow!("cooling feature must have an argument"));
459            }
460            (Feature::HvdcpOpti, _) => features.hvdcp_opti = true,
461            (Feature::Wifi, _) => features.kernel.wifi = true,
462            (Feature::AdditionalMounts, _) => {
463                features.additional_mounts = Some(additional_mounts.clone())
464            }
465            (Feature::WakeupTest, _) => features.wakeup_test = true,
466            (Feature::MmcblkStub, _) => features.mmcblk_stub = true,
467            (Feature::FakeIon, _) => features.kernel.fake_ion = true,
468            (Feature::AndroidUsb, _) => features.android_usb = true,
469        };
470    }
471
472    if features.boot_notifier_cpu_boost.is_some() && !features.boot_notifier {
473        return Err(anyhow!("boot_notifier_cpu_boost feature requires boot_notifier"));
474    }
475
476    if *ui_visual_debugging_level > 0 {
477        features.enable_visual_debugging = true;
478    }
479    features.enable_utc_time_adjustment = *enable_utc_time_adjustment;
480
481    features.kernel.default_uid = start_info.program.default_uid.0;
482    features.kernel.default_seclabel = start_info.program.default_seclabel.clone();
483    features.kernel.default_ns_mount_options =
484        if let Some(mount_options) = &start_info.program.default_ns_mount_options {
485            let options = mount_options
486                .iter()
487                .map(|item| {
488                    let mut splitter = item.splitn(2, ":");
489                    let key = splitter.next().expect("Failed to parse mount options");
490                    let value = splitter.next().expect("Failed to parse mount options");
491                    (key.to_string(), value.to_string())
492                })
493                .collect();
494            Some(options)
495        } else {
496            None
497        };
498
499    features.kernel.mlock_always_onfault = *mlock_always_onfault;
500    features.kernel.mlock_pin_flavor = MlockPinFlavor::parse(mlock_pin_flavor.as_str())?;
501    features.kernel.crash_report_throttling = *crash_report_throttling;
502    features.kernel.cached_zx_map_info_bytes = *cached_zx_map_info_bytes;
503    features.kernel.dirent_cache_size = *dirent_cache_size;
504    features.initial_view_id_annotation = initial_view_id_annotation.clone();
505
506    Ok(features)
507}
508
509/// Runs all the features that are enabled in `system_task.kernel()`.
510
511pub fn run_container_features(kernel: &Arc<Kernel>, features: &Features) -> Result<(), Error> {
512    if features.framebuffer {
513        let framebuffer = Framebuffer::device_init(
514            kernel,
515            features.aspect_ratio,
516            features.enable_visual_debugging,
517            features.initial_view_id_annotation.clone(),
518        )
519        .context("initializing framebuffer")?;
520
521        let (touch_source_client, touch_source_server) = fidl::endpoints::create_endpoints();
522        let (mouse_source_client, mouse_source_server) = fidl::endpoints::create_endpoints();
523        let view_bound_protocols = fuicomposition::ViewBoundProtocols {
524            touch_source: Some(touch_source_server),
525            mouse_source: Some(mouse_source_server),
526            ..Default::default()
527        };
528        let view_identity = fuiviews::ViewIdentityOnCreation::from(
529            fuchsia_scenic::ViewRefPair::new().expect("Failed to create ViewRefPair"),
530        );
531        let view_ref = fuchsia_scenic::duplicate_view_ref(&view_identity.view_ref)
532            .expect("Failed to dup view ref.");
533        let keyboard =
534            fuchsia_component::client::connect_to_protocol_sync::<fuiinput::KeyboardMarker>()
535                .expect("Failed to connect to keyboard");
536        let registry_proxy = fuchsia_component::client::connect_to_protocol_sync::<
537            fuipolicy::DeviceListenerRegistryMarker,
538        >()
539        .expect("Failed to connect to device listener registry");
540
541        // These need to be set before `Framebuffer::start_server` is called.
542        // `Framebuffer::start_server` is only called when the `framebuffer` component feature is
543        // enabled. The container is the runner for said components, and `run_container_features`
544        // is performed before the Container is fully initialized. Therefore, it's safe to set
545        // these values at this point.
546        //
547        // In the future, we would like to avoid initializing a framebuffer unconditionally on the
548        // Kernel, at which point this logic will need to change.
549        *framebuffer.view_identity.lock() = Some(view_identity);
550        *framebuffer.view_bound_protocols.lock() = Some(view_bound_protocols);
551
552        let (display_width, display_height) = {
553            let framebuffer_info = framebuffer.info.read();
554            (framebuffer_info.xres as i32, framebuffer_info.yres as i32)
555        };
556
557        let touch_device =
558            InputDevice::new_touch(display_width, display_height, &kernel.inspect_node);
559        let keyboard_device = InputDevice::new_keyboard(&kernel.inspect_node);
560        let mouse_device = InputDevice::new_mouse(&kernel.inspect_node);
561
562        touch_device.clone().register(kernel, DEFAULT_TOUCH_DEVICE_ID)?;
563        keyboard_device.clone().register(kernel, DEFAULT_KEYBOARD_DEVICE_ID)?;
564        mouse_device.clone().register(kernel, DEFAULT_MOUSE_DEVICE_ID)?;
565
566        let (input_events_relay, input_events_relay_handle) = new_input_relay();
567        input_events_relay.start_relays(
568            &kernel,
569            EventProxyMode::WakeContainer,
570            touch_source_client,
571            keyboard,
572            mouse_source_client,
573            view_ref,
574            registry_proxy,
575            touch_device.open_files.clone(),
576            keyboard_device.open_files.clone(),
577            mouse_device.open_files.clone(),
578            Some(touch_device.inspect_status),
579            Some(keyboard_device.inspect_status),
580            Some(mouse_device.inspect_status),
581        );
582
583        register_uinput_device(kernel, input_events_relay_handle)?;
584
585        // Channel we use to inform the relay of changes to `touch_standby`
586        let (touch_standby_sender, touch_standby_receiver) =
587            ThreadLockupDetector::tracked_channel::<bool>();
588        let touch_policy_device = TouchPowerPolicyDevice::new(touch_standby_sender);
589        touch_policy_device.clone().register(kernel);
590        touch_policy_device.start_relay(&kernel, touch_standby_receiver);
591
592        framebuffer.start_server(kernel, None);
593    }
594    if features.gralloc {
595        // The virtgralloc0 device allows vulkan_selector to indicate to gralloc
596        // whether swiftshader or magma will be used. This is separate from the
597        // magma feature because the policy choice whether to use magma or
598        // swiftshader is in vulkan_selector, and it can potentially choose
599        // switfshader for testing purposes even when magma0 is present. Also,
600        // it's nice to indicate swiftshader the same way regardless of whether
601        // the magma feature is enabled or disabled. If a call to gralloc AIDL
602        // IAllocator allocate2 occurs with this feature disabled, the call will
603        // fail.
604        gralloc_device_init(kernel);
605    }
606    if features.kgsl {
607        kgsl_device_init(kernel);
608    }
609    if let Some(supported_vendors) = &features.magma_supported_vendors {
610        magma_device_init(kernel, supported_vendors.clone());
611    }
612    if features.gfxstream {
613        gpu_device_init(kernel);
614    }
615    if let Some(socket_path) = features.perfetto.clone() {
616        start_perfetto_consumer_thread(kernel, socket_path)
617            .context("Failed to start perfetto consumer thread")?;
618    }
619    if features.ashmem {
620        ashmem_device_init(kernel);
621    }
622    if features.boot_notifier {
623        booted_device_init(kernel, features.boot_notifier_cpu_boost);
624    }
625    if features.data_collection_consent_sync {
626        consent_sync_init(kernel);
627    }
628    if features.network_manager {
629        if let Err(e) = nmfs_init(kernel) {
630            log_error!("Network manager initialization failed: ({e:?})");
631        }
632    }
633    if features.nanohub {
634        nanohub_device_init(kernel);
635    }
636    if features.thermal {
637        thermal_device_init(kernel)?;
638    }
639    if let Some(devices) = &features.cooling {
640        cooling_device_init(kernel, devices.clone())?;
641    }
642    if features.hvdcp_opti {
643        hvdcp_opti_init(kernel)?;
644    }
645    if features.fastrpc {
646        fastrpc_device_init(kernel);
647    }
648    if features.wakeup_test {
649        register_wakeup_test_device(kernel)?;
650    }
651    if features.mmcblk_stub {
652        let _device = add_mmc_block_device(kernel).context("Failed to add stub mmcblk0 device")?;
653    }
654    if features.android_usb {
655        usb_device_init(kernel).context("Failed to add android usb device nodes")?;
656    }
657    Ok(())
658}
659
660/// Runs features requested by individual components inside the container.
661pub fn run_component_features(
662    kernel: &Kernel,
663    entries: &Vec<String>,
664    mut incoming_dir: Option<fidl_fuchsia_io::DirectoryProxy>,
665) -> Result<(), Errno> {
666    for entry in entries {
667        match entry.as_str() {
668            "framebuffer" => {
669                Framebuffer::get(kernel)?.start_server(kernel, incoming_dir.take());
670            }
671            feature => {
672                return error!(ENOSYS, format!("Unsupported feature: {}", feature));
673            }
674        }
675    }
676    Ok(())
677}
starnix_kernel_runner/features.rs

starnix_kernel_runner/
features.rs
