scope(daemon) implement listing processes

The list is generated via the procfs crate. The following information is
being transmitted via grpc: pid, ppid, comm, state, cmdline

Signed-off-by: Mr-Kanister <[email protected]>

.gitignore

@@ -1,3 +1,4 @@
+# SPDX-FileCopyrightText: 2024 Robin Seidl <[email protected]>
 # SPDX-FileCopyrightText: 2024 The AMOS Projects
 #
 # SPDX-License-Identifier: MIT
@@ -47,4 +48,4 @@ target
 sbom.json
 
 .codebuddy/
-
+build

rust/.gitignore

@@ -1,6 +1,7 @@
 # SPDX-FileCopyrightText: 2024 Benedikt Zinn <[email protected]>
 # SPDX-FileCopyrightText: 2024 Felix Hilgers <[email protected]>
 # SPDX-FileCopyrightText: 2024 Luca Bretting <[email protected]>
+# SPDX-FileCopyrightText: 2024 Robin Seidl <[email protected]>
 #
 # SPDX-License-Identifier: MIT
 
@@ -13,3 +14,5 @@ target/
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
+
+ziofa.json

rust/Cargo.toml

@@ -1,6 +1,7 @@
 # SPDX-FileCopyrightText: 2024 Benedikt Zinn <[email protected]>
 # SPDX-FileCopyrightText: 2024 Felix Hilgers <[email protected]>
 # SPDX-FileCopyrightText: 2024 Luca Bretting <[email protected]>
+# SPDX-FileCopyrightText: 2024 Robin Seidl <[email protected]>
 #
 # SPDX-License-Identifier: MIT
 
@@ -46,6 +47,7 @@ backend-daemon = { path = "./backend/daemon" }
 backend-ebpf = { path = "./backend/ebpf" }
 tracing = { version = "0.1.40" }
 tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
+procfs = "0.17.0"
 
 [profile.dev]
 panic = "abort"

rust/backend/daemon/Cargo.toml

@@ -21,6 +21,7 @@ thiserror = { workspace = true }
 backend-common = { workspace = true, features = ["user"] }
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true }
+procfs = {workspace = true}
 
 [build-dependencies]
 cargo_metadata = { workspace = true }

rust/backend/daemon/src/bin/cli.rs

@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: 2024 Benedikt Zinn <[email protected]>
+// SPDX-FileCopyrightText: 2024 Robin Seidl <[email protected]>
 //
 // SPDX-License-Identifier: MIT
 
@@ -39,5 +40,19 @@ async fn main() {
             println!("Error trying to set configuration");
             println!("{:?}", e);
         }
+    };
+
+    let processes = client.list_processes(()).await.and_then(|op| {
+        Ok(op.into_inner())
+    });
+    match processes {
+        Err(e) => println!("Error getting the process list: {:?}", e),
+        Ok(pl) => {
+            println!("Processes:");
+            println!("pid | ppid | comm | state | cmdline");
+            for p in pl.processes {
+                println!("{} | {} | {} | {} | {}", p.pid, p.ppid, p.comm, p.state, p.cmdline)
+            }
+        },
     }
 }

rust/backend/daemon/src/main.rs

@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: 2024 Benedikt Zinn <[email protected]>
+// SPDX-FileCopyrightText: 2024 Robin Seidl <[email protected]>
 //
 // SPDX-License-Identifier: MIT
 
@@ -10,6 +11,7 @@ pub mod counter;
 mod ebpf_utils;
 mod helpers;
 mod server;
+mod procfs_utils;
 
 #[tokio::main]
 async fn main() {