From: Gabriel Goller <g.goller@proxmox.com>
To: pbs-devel@lists.proxmox.com
Subject: [pbs-devel] [PATCH v6 proxmox 1/5] sys: add helper to get bootmode and secureboot status
Date: Wed, 29 Nov 2023 14:28:57 +0100 [thread overview]
Message-ID: <20231129132901.160282-2-g.goller@proxmox.com> (raw)
In-Reply-To: <20231129132901.160282-1-g.goller@proxmox.com>
Helper that return the current boot_mode and secureboot status.
Detection works the same as in pve, we use `/sys/firmware/efi` and
the `efivars/SecureBoot-xxx..` file.
Signed-off-by: Gabriel Goller <g.goller@proxmox.com>
---
proxmox-sys/src/boot_mode.rs | 60 ++++++++++++++++++++++++++++++++++++
proxmox-sys/src/lib.rs | 1 +
2 files changed, 61 insertions(+)
create mode 100644 proxmox-sys/src/boot_mode.rs
diff --git a/proxmox-sys/src/boot_mode.rs b/proxmox-sys/src/boot_mode.rs
new file mode 100644
index 0000000..390618c
--- /dev/null
+++ b/proxmox-sys/src/boot_mode.rs
@@ -0,0 +1,60 @@
+use std::{io::Read, sync::OnceLock};
+
+/// The SecureBoot status
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum SecureBoot {
+ /// SecureBoot is enabled
+ Enabled,
+ /// SecureBoot is disabled
+ Disabled,
+}
+
+/// The possible BootModes
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum BootMode {
+ /// The BootMode is EFI/UEFI
+ Efi,
+ /// The BootMode is Legacy BIOS
+ Bios,
+}
+
+static BOOT_MODE: OnceLock<BootMode> = OnceLock::new();
+static SECURE_BOOT: OnceLock<SecureBoot> = OnceLock::new();
+
+impl BootMode {
+ /// Returns the current bootmode (BIOS or EFI)
+ pub fn query() -> BootMode {
+ let value: &BootMode = BOOT_MODE.get_or_init(|| {
+ if std::path::Path::new("/sys/firmware/efi").exists() {
+ BootMode::Efi
+ } else {
+ BootMode::Bios
+ }
+ });
+ *value
+ }
+}
+
+impl SecureBoot {
+ /// Checks if secure boot is enabled
+ pub fn query() -> SecureBoot {
+ let value: &SecureBoot = SECURE_BOOT.get_or_init(|| {
+ // Check if SecureBoot is enabled
+ // Attention: this file is not seekable!
+ // Spec: https://uefi.org/specs/UEFI/2.10/03_Boot_Manager.html?highlight=8be4d#globally-defined-variables
+ let mut buf = [0; 5];
+ if std::fs::File::open(
+ "/sys/firmware/efi/efivars/SecureBoot-8be4df61-93ca-11d2-aa0d-00e098032b8c",
+ )
+ .and_then(|mut file| file.read_exact(&mut buf))
+ .is_ok()
+ && buf[4] == 1
+ {
+ SecureBoot::Enabled
+ } else {
+ SecureBoot::Disabled
+ }
+ });
+ *value
+ }
+}
diff --git a/proxmox-sys/src/lib.rs b/proxmox-sys/src/lib.rs
index 7e59058..8ea7073 100644
--- a/proxmox-sys/src/lib.rs
+++ b/proxmox-sys/src/lib.rs
@@ -1,5 +1,6 @@
use std::os::unix::ffi::OsStrExt;
+pub mod boot_mode;
pub mod command;
#[cfg(feature = "crypt")]
pub mod crypt;
--
2.39.2
next prev parent reply other threads:[~2023-11-29 13:29 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-29 13:28 [pbs-devel] [PATCH v6 proxmox{, -backup} 0/5] Add boot_mode, improve kernel version Gabriel Goller
2023-11-29 13:28 ` Gabriel Goller [this message]
2023-11-29 13:58 ` [pbs-devel] applied: [PATCH v6 proxmox 1/5] sys: add helper to get bootmode and secureboot status Wolfgang Bumiller
2023-11-29 13:28 ` [pbs-devel] [PATCH v6 proxmox-backup 2/5] node: status: added bootmode Gabriel Goller
2023-11-29 13:40 ` Lukas Wagner
2023-11-29 13:50 ` Lukas Wagner
2023-11-29 13:28 ` [pbs-devel] [PATCH v6 proxmox-backup 3/5] ui: dashboard: show the bootmode Gabriel Goller
2023-11-29 13:29 ` [pbs-devel] [PATCH v6 proxmox-backup 4/5] node: status: declutter kernel-version Gabriel Goller
2023-11-29 13:29 ` [pbs-devel] [PATCH v6 proxmox-backup 5/5] ui: dashboard: nicely display kernel version Gabriel Goller
2023-11-29 13:55 ` [pbs-devel] [PATCH v6 proxmox{, -backup} 0/5] Add boot_mode, improve " Lukas Wagner
2023-11-29 14:31 ` [pbs-devel] applied-series: " Wolfgang Bumiller
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