feat: compress debug snapshots into .tar.gz, include system info in them

GitHub does not allow plain .tar uploads but allows .tar.gz

Cargo.lock

@@ -17,6 +17,12 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
+[[package]]
+name = "adler32"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aae1277d39aeec15cb388266ecc24b11c80469deae6067e17a1a7aa9e5c1f234"
+
 [[package]]
 name = "ahash"
 version = "0.8.7"
@@ -528,6 +534,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "core2"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b49ba7ef1ad6107f8824dbe97de947cbaac53c44e7f9756a1fba0d37c1eec505"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.12"
@@ -537,6 +552,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "crc32fast"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "crossbeam-queue"
 version = "0.3.11"
@@ -603,6 +627,12 @@ dependencies = [
  "syn 2.0.48",
 ]
 
+[[package]]
+name = "dary_heap"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7762d17f1241643615821a8455a0b2c3e803784b058693d990b11f2dce25a0ca"
+
 [[package]]
 name = "derivative"
 version = "2.2.0"
@@ -1160,6 +1190,15 @@ dependencies = [
  "crunchy",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43a3c133739dddd0d2990f9a4bdf8eb4b21ef50e4851ca85ab661199821d510e"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.14.3"
@@ -1220,7 +1259,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
 dependencies = [
  "equivalent",
- "hashbrown",
+ "hashbrown 0.14.3",
  "serde",
 ]
 
@@ -1303,6 +1342,7 @@ dependencies = [
  "futures",
  "lact-schema",
  "libdrm_amdgpu_sys",
+ "libflate",
  "nix 0.27.1",
  "os-release",
  "pciid-parser",
@@ -1398,6 +1438,30 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "libflate"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f7d5654ae1795afc7ff76f4365c2c8791b0feb18e8996a96adad8ffd7c3b2bf"
+dependencies = [
+ "adler32",
+ "core2",
+ "crc32fast",
+ "dary_heap",
+ "libflate_lz77",
+]
+
+[[package]]
+name = "libflate_lz77"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be5f52fb8c451576ec6b79d3f4deb327398bc05bbdbd99021a6e77a4c855d524"
+dependencies = [
+ "core2",
+ "hashbrown 0.13.2",
+ "rle-decode-fast",
+]
+
 [[package]]
 name = "libloading"
 version = "0.7.4"
@@ -1886,6 +1950,12 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
 
+[[package]]
+name = "rle-decode-fast"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3582f63211428f83597b51b2ddb88e2a91a9d52d12831f9d08f5e624e8977422"
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.23"

lact-daemon/Cargo.toml

@@ -36,5 +36,6 @@ futures = { version = "0.3.30", default-features = false }
 zbus = { version = "3.14.1", default-features = false, features = ["tokio"] }
 libdrm_amdgpu_sys = { optional = true, version = "0.5.0" }
 tar = "0.4.40"
+libflate = "2.0.0"
 chrono = "0.4.31"
 os-release = "0.1.0"

lact-daemon/src/server/handler.rs

@@ -1,6 +1,6 @@
 use super::{
     gpu_controller::{fan_control::FanCurve, GpuController},
-    system::PP_FEATURE_MASK_PATH,
+    system::{self, detect_initramfs_type, PP_FEATURE_MASK_PATH},
 };
 use crate::config::{self, default_fan_static_speed, Config, FanControlSettings};
 use amdgpu_sysfs::{
@@ -14,6 +14,9 @@ use lact_schema::{
     ClocksInfo, DeviceInfo, DeviceListEntry, DeviceStats, FanControlMode, FanCurveMap, PmfwOptions,
     PowerStates,
 };
+use libflate::gzip;
+use os_release::OS_RELEASE;
+use serde_json::json;
 use std::{
     cell::RefCell,
     collections::BTreeMap,
@@ -432,11 +435,12 @@ impl<'a> Handler {
 
     pub fn generate_snapshot(&self) -> anyhow::Result<String> {
         let datetime = chrono::Local::now().format("%Y%m%d-%H%M%S");
-        let out_path = format!("/tmp/LACT-sysfs-snapshot-{datetime}.tar");
+        let out_path = format!("/tmp/LACT-sysfs-snapshot-{datetime}.tar.gz");
 
         let out_file = File::create(&out_path)
             .with_context(|| "Could not create output file at {out_path}")?;
-        let out_writer = BufWriter::new(out_file);
+        let out_writer = gzip::Encoder::new(BufWriter::new(out_file))
+            .context("Could not create GZIP encoder")?;
 
         let mut archive = tar::Builder::new(out_writer);
 
@@ -481,10 +485,35 @@ impl<'a> Handler {
             }
         }
 
+        let system_info = system::info()
+            .ok()
+            .map(|info| serde_json::to_value(info).unwrap());
+        let initramfs_type = match OS_RELEASE.as_ref() {
+            Ok(os_release) => detect_initramfs_type(os_release)
+                .map(|initramfs_type| serde_json::to_value(initramfs_type).unwrap()),
+            Err(err) => Some(err.to_string().into()),
+        };
+
+        let info = json!({
+            "system_info": system_info,
+            "initramfs_type": initramfs_type,
+        });
+        let info_data = serde_json::to_vec_pretty(&info).unwrap();
+
+        let mut info_header = tar::Header::new_gnu();
+        info_header.set_size(info_data.len().try_into().unwrap());
+        info_header.set_mode(0o755);
+        info_header.set_cksum();
+
+        archive.append_data(&mut info_header, "info.json", Cursor::new(info_data))?;
+
         let mut writer = archive.into_inner().context("Could not finish archive")?;
         writer.flush().context("Could not flush output file")?;
 
         writer
+            .finish()
+            .into_result()
+            .context("Could not finish GZIP archive")?
             .into_inner()?
             .set_permissions(Permissions::from_mode(0o775))
             .context("Could not set permissions on output file")?;

lact-daemon/src/server/system.rs

@@ -115,7 +115,7 @@ fn regenerate_initramfs() -> anyhow::Result<InitramfsType> {
     }
 }
 
-fn detect_initramfs_type(os_release: &OsRelease) -> Option<InitramfsType> {
+pub(crate) fn detect_initramfs_type(os_release: &OsRelease) -> Option<InitramfsType> {
     let id_like: Vec<_> = os_release.id_like.split_whitespace().collect();
 
     if os_release.id == "debian" || id_like.contains(&"debian") {