[pbs-devel] [PATCH v4 proxmox-backup 2/5] node: status: added bootmode

[Gabriel Goller <g.goller@proxmox.com>]

Added field that shows the bootmode of the node. The bootmode is either
Legacy Bios, EFI, or EFI (Secure Boot). To detect the mode we use the
exact same method as in pve: We check if the `/sys/firmware/efi` folder
exists, then check if the `SecureBoot-xx...` file in the `efivars`
directory has the SecureBoot flag enabled.

Signed-off-by: Gabriel Goller <g.goller@proxmox.com>
---
 pbs-api-types/src/node.rs | 30 +++++++++++++++++++++++++++---
 src/api2/node/status.rs   | 29 +++++++++++++++++++++++++++--
 2 files changed, 54 insertions(+), 5 deletions(-)

diff --git a/pbs-api-types/src/node.rs b/pbs-api-types/src/node.rs
index 704215bb..ab626157 100644
--- a/pbs-api-types/src/node.rs
+++ b/pbs-api-types/src/node.rs
@@ -1,9 +1,8 @@
-use serde::{Deserialize, Serialize};
 use proxmox_schema::*;
+use serde::{Deserialize, Serialize};
 
 use crate::StorageStatus;
 
-
 #[api]
 #[derive(Serialize, Deserialize, Default)]
 #[serde(rename_all = "kebab-case")]
@@ -39,6 +38,29 @@ pub struct NodeInformation {
     pub fingerprint: String,
 }
 
+
+#[api]
+#[derive(Serialize, Deserialize, Copy, Clone)]
+#[serde(rename_all = "kebab-case")]
+/// The possible BootModes
+pub enum BootMode {
+    /// The BootMode is EFI/UEFI
+    Efi,
+    /// The BootMode is Legacy BIOS
+    LegacyBios,
+}
+
+#[api]
+#[derive(Serialize, Deserialize, Clone)]
+#[serde(rename_all = "lowercase")]
+/// Holds the Bootmodes
+pub struct BootModeInformation {
+    /// The BootMode, either Efi or Bios
+    pub mode: BootMode,
+    /// SecureBoot status
+    pub secureboot: bool,
+}
+
 #[api]
 #[derive(Serialize, Deserialize, Default)]
 #[serde(rename_all = "kebab-case")]
@@ -78,7 +100,7 @@ pub struct NodeCpuInformation {
         }
     },
 )]
-#[derive(Serialize, Deserialize, Default)]
+#[derive(Serialize, Deserialize)]
 #[serde(rename_all = "kebab-case")]
 /// The Node status
 pub struct NodeStatus {
@@ -97,4 +119,6 @@ pub struct NodeStatus {
     pub wait: f64,
     pub cpuinfo: NodeCpuInformation,
     pub info: NodeInformation,
+    /// Current boot mode
+    pub boot_info: BootModeInformation,
 }
diff --git a/src/api2/node/status.rs b/src/api2/node/status.rs
index 639d7211..17b9aff3 100644
--- a/src/api2/node/status.rs
+++ b/src/api2/node/status.rs
@@ -1,16 +1,18 @@
-use std::os::unix::prelude::OsStrExt;
+use std::os::unix::ffi::OsStrExt;
 use std::process::Command;
 
 use anyhow::{bail, format_err, Error};
 use serde_json::Value;
 
+use proxmox_sys::boot_mode;
 use proxmox_sys::linux::procfs;
 
 use proxmox_router::{ApiMethod, Permission, Router, RpcEnvironment};
 use proxmox_schema::api;
 
 use pbs_api_types::{
-    NodePowerCommand, StorageStatus, NODE_SCHEMA, PRIV_SYS_AUDIT, PRIV_SYS_POWER_MANAGEMENT,
+    BootModeInformation, NodePowerCommand, StorageStatus, NODE_SCHEMA, PRIV_SYS_AUDIT,
+    PRIV_SYS_POWER_MANAGEMENT,
 };
 
 use pbs_api_types::{
@@ -25,6 +27,26 @@ fn procfs_to_node_cpu_info(info: procfs::ProcFsCPUInfo) -> NodeCpuInformation {
     }
 }
 
+fn boot_mode_to_info(bm: boot_mode::BootMode, sb: boot_mode::SecureBoot) -> BootModeInformation {
+    use boot_mode::BootMode;
+    use boot_mode::SecureBoot;
+
+    match (bm, sb) {
+        (BootMode::Efi, SecureBoot::Enabled) => BootModeInformation {
+            mode: pbs_api_types::BootMode::Efi,
+            secureboot: true,
+        },
+        (BootMode::Efi, SecureBoot::Disabled) => BootModeInformation {
+            mode: pbs_api_types::BootMode::Efi,
+            secureboot: false,
+        },
+        (BootMode::Bios, _) => BootModeInformation {
+            mode: pbs_api_types::BootMode::LegacyBios,
+            secureboot: false,
+        },
+    }
+}
+
 #[api(
     input: {
         properties: {
@@ -79,6 +101,8 @@ async fn get_status(
 
     let disk = crate::tools::fs::fs_info_static(proxmox_lang::c_str!("/")).await?;
 
+    let boot_info = boot_mode_to_info(boot_mode::BootMode::query(), boot_mode::SecureBoot::query());
+
     Ok(NodeStatus {
         memory,
         swap,
@@ -96,6 +120,7 @@ async fn get_status(
         info: NodeInformation {
             fingerprint: crate::cert_info()?.fingerprint()?,
         },
+        boot_info,
     })
 }
 
-- 
2.39.2