1use fidl::unpersist;
2use fidl_cf_sc_internal_fshostconfig::Config as FidlConfig;
3use fuchsia_inspect::Node;
4use fuchsia_runtime::{take_startup_handle, HandleInfo, HandleType};
5#[derive(Debug)]
6pub struct Config {
7 pub blobfs: bool,
8 pub blobfs_cache_eviction_policy: String,
9 pub blobfs_initial_inodes: u64,
10 pub blobfs_max_bytes: u64,
11 pub blobfs_use_deprecated_padded_format: bool,
12 pub blobfs_write_compression_algorithm: String,
13 pub bootpart: bool,
14 pub check_filesystems: bool,
15 pub data: bool,
16 pub data_filesystem_format: String,
17 pub data_max_bytes: u64,
18 pub disable_automount: bool,
19 pub disable_block_watcher: bool,
20 pub factory: bool,
21 pub format_data_on_corruption: bool,
22 pub fvm: bool,
23 pub fvm_slice_size: u64,
24 pub fxfs_blob: bool,
25 pub fxfs_crypt_url: String,
26 pub gpt: bool,
27 pub gpt_all: bool,
28 pub mbr: bool,
29 pub nand: bool,
30 pub netboot: bool,
31 pub no_zxcrypt: bool,
32 pub ramdisk_image: bool,
33 pub starnix_volume_name: String,
34 pub storage_host: bool,
35 pub use_disk_migration: bool,
36}
37impl Config {
38 pub fn take_from_startup_handle() -> Self {
39 let config_vmo: zx::Vmo =
40 take_startup_handle(HandleInfo::new(HandleType::ComponentConfigVmo, 0))
41 .expect("Config VMO handle must be provided and cannot already have been taken.")
42 .into();
43 let config_size =
44 config_vmo.get_content_size().expect("must be able to read config vmo content size");
45 assert_ne!(config_size, 0, "config vmo must be non-empty");
46 let config_bytes =
47 config_vmo.read_to_vec(0, config_size).expect("must be able to read config vmo");
48 let checksum_length = u16::from_le_bytes([config_bytes[0], config_bytes[1]]) as usize;
49 let fidl_start = 2 + checksum_length;
50 let observed_checksum = &config_bytes[2..fidl_start];
51 let expected_checksum = vec![
52 0x63, 0x1f, 0xe3, 0xc7, 0xee, 0x84, 0x00, 0xd4, 0x1d, 0x76, 0xf6, 0x82, 0x0f, 0x9d,
53 0x3d, 0x86, 0xdc, 0x1b, 0x45, 0x0c, 0x06, 0xc7, 0x6b, 0x70, 0x53, 0xd4, 0x82, 0xe8,
54 0x66, 0x7c, 0xf5, 0x44,
55 ];
56 assert_eq!(
57 observed_checksum, expected_checksum,
58 "checksum from config VMO does not match expected checksum"
59 );
60 let fidl_config: FidlConfig = unpersist(&config_bytes[fidl_start..])
61 .expect("must be able to parse bytes as config FIDL");
62 Self {
63 blobfs: fidl_config.blobfs,
64 blobfs_cache_eviction_policy: fidl_config.blobfs_cache_eviction_policy,
65 blobfs_initial_inodes: fidl_config.blobfs_initial_inodes,
66 blobfs_max_bytes: fidl_config.blobfs_max_bytes,
67 blobfs_use_deprecated_padded_format: fidl_config.blobfs_use_deprecated_padded_format,
68 blobfs_write_compression_algorithm: fidl_config.blobfs_write_compression_algorithm,
69 bootpart: fidl_config.bootpart,
70 check_filesystems: fidl_config.check_filesystems,
71 data: fidl_config.data,
72 data_filesystem_format: fidl_config.data_filesystem_format,
73 data_max_bytes: fidl_config.data_max_bytes,
74 disable_automount: fidl_config.disable_automount,
75 disable_block_watcher: fidl_config.disable_block_watcher,
76 factory: fidl_config.factory,
77 format_data_on_corruption: fidl_config.format_data_on_corruption,
78 fvm: fidl_config.fvm,
79 fvm_slice_size: fidl_config.fvm_slice_size,
80 fxfs_blob: fidl_config.fxfs_blob,
81 fxfs_crypt_url: fidl_config.fxfs_crypt_url,
82 gpt: fidl_config.gpt,
83 gpt_all: fidl_config.gpt_all,
84 mbr: fidl_config.mbr,
85 nand: fidl_config.nand,
86 netboot: fidl_config.netboot,
87 no_zxcrypt: fidl_config.no_zxcrypt,
88 ramdisk_image: fidl_config.ramdisk_image,
89 starnix_volume_name: fidl_config.starnix_volume_name,
90 storage_host: fidl_config.storage_host,
91 use_disk_migration: fidl_config.use_disk_migration,
92 }
93 }
94 pub fn record_inspect(&self, inspector_node: &Node) {
95 inspector_node.record_bool("blobfs", self.blobfs);
96 inspector_node
97 .record_string("blobfs_cache_eviction_policy", &self.blobfs_cache_eviction_policy);
98 inspector_node.record_uint("blobfs_initial_inodes", self.blobfs_initial_inodes);
99 inspector_node.record_uint("blobfs_max_bytes", self.blobfs_max_bytes);
100 inspector_node.record_bool(
101 "blobfs_use_deprecated_padded_format",
102 self.blobfs_use_deprecated_padded_format,
103 );
104 inspector_node.record_string(
105 "blobfs_write_compression_algorithm",
106 &self.blobfs_write_compression_algorithm,
107 );
108 inspector_node.record_bool("bootpart", self.bootpart);
109 inspector_node.record_bool("check_filesystems", self.check_filesystems);
110 inspector_node.record_bool("data", self.data);
111 inspector_node.record_string("data_filesystem_format", &self.data_filesystem_format);
112 inspector_node.record_uint("data_max_bytes", self.data_max_bytes);
113 inspector_node.record_bool("disable_automount", self.disable_automount);
114 inspector_node.record_bool("disable_block_watcher", self.disable_block_watcher);
115 inspector_node.record_bool("factory", self.factory);
116 inspector_node.record_bool("format_data_on_corruption", self.format_data_on_corruption);
117 inspector_node.record_bool("fvm", self.fvm);
118 inspector_node.record_uint("fvm_slice_size", self.fvm_slice_size);
119 inspector_node.record_bool("fxfs_blob", self.fxfs_blob);
120 inspector_node.record_string("fxfs_crypt_url", &self.fxfs_crypt_url);
121 inspector_node.record_bool("gpt", self.gpt);
122 inspector_node.record_bool("gpt_all", self.gpt_all);
123 inspector_node.record_bool("mbr", self.mbr);
124 inspector_node.record_bool("nand", self.nand);
125 inspector_node.record_bool("netboot", self.netboot);
126 inspector_node.record_bool("no_zxcrypt", self.no_zxcrypt);
127 inspector_node.record_bool("ramdisk_image", self.ramdisk_image);
128 inspector_node.record_string("starnix_volume_name", &self.starnix_volume_name);
129 inspector_node.record_bool("storage_host", self.storage_host);
130 inspector_node.record_bool("use_disk_migration", self.use_disk_migration);
131 }
132}