[pbs-devel] [PATCH proxmox-backup 02/26] config: make RemovableDeviceConfig savable to config file

[Hannes Laimer]

Signed-off-by: Hannes Laimer <h.laimer at proxmox.com>
---
 pbs-config/src/lib.rs              |  1 +
 pbs-config/src/removable_device.rs | 63 ++++++++++++++++++++++++++++++
 2 files changed, 64 insertions(+)
 create mode 100644 pbs-config/src/removable_device.rs

diff --git a/pbs-config/src/lib.rs b/pbs-config/src/lib.rs
index a83db4e1..5ea67652 100644
--- a/pbs-config/src/lib.rs
+++ b/pbs-config/src/lib.rs
@@ -10,6 +10,7 @@ pub mod metrics;
 pub mod network;
 pub mod prune;
 pub mod remote;
+pub mod removable_device;
 pub mod sync;
 pub mod tape_encryption_keys;
 pub mod tape_job;
diff --git a/pbs-config/src/removable_device.rs b/pbs-config/src/removable_device.rs
new file mode 100644
index 00000000..4587d72b
--- /dev/null
+++ b/pbs-config/src/removable_device.rs
@@ -0,0 +1,63 @@
+use std::collections::HashMap;
+
+use anyhow::Error;
+use lazy_static::lazy_static;
+
+use pbs_api_types::{RemovableDeviceConfig, DEVICE_NAME_SCHEMA};
+use proxmox_schema::*;
+use proxmox_section_config::{SectionConfig, SectionConfigData, SectionConfigPlugin};
+
+use crate::{open_backup_lockfile, replace_backup_config, BackupLockGuard};
+
+lazy_static! {
+    pub static ref CONFIG: SectionConfig = init();
+}
+
+fn init() -> SectionConfig {
+    const OBJ_SCHEMA: &ObjectSchema = RemovableDeviceConfig::API_SCHEMA.unwrap_object_schema();
+
+    let plugin = SectionConfigPlugin::new(
+        "removable-device".to_string(),
+        Some(String::from("name")),
+        OBJ_SCHEMA,
+    );
+    let mut config = SectionConfig::new(&DEVICE_NAME_SCHEMA);
+    config.register_plugin(plugin);
+
+    config
+}
+
+pub const REMOVABLE_DEVIVE_CFG_FILENAME: &str = "/etc/proxmox-backup/removable-device.cfg";
+pub const REMOVABLE_DEVIVE_CFG_LOCKFILE: &str = "/etc/proxmox-backup/.removable-device.lck";
+
+/// Get exclusive lock
+pub fn lock_config() -> Result<BackupLockGuard, Error> {
+    open_backup_lockfile(REMOVABLE_DEVIVE_CFG_LOCKFILE, None, true)
+}
+
+pub fn config() -> Result<(SectionConfigData, [u8; 32]), Error> {
+    let content = proxmox_sys::fs::file_read_optional_string(REMOVABLE_DEVIVE_CFG_FILENAME)?;
+    let content = content.unwrap_or_default();
+
+    let digest = openssl::sha::sha256(content.as_bytes());
+    let data = CONFIG.parse(REMOVABLE_DEVIVE_CFG_FILENAME, &content)?;
+
+    Ok((data, digest))
+}
+
+pub fn save_config(config: &SectionConfigData) -> Result<(), Error> {
+    let raw = CONFIG.write(REMOVABLE_DEVIVE_CFG_FILENAME, config)?;
+    replace_backup_config(REMOVABLE_DEVIVE_CFG_FILENAME, raw.as_bytes())
+}
+
+// shell completion helper
+pub fn complete_removable_device_name(_arg: &str, _param: &HashMap<String, String>) -> Vec<String> {
+    match config() {
+        Ok((data, _digest)) => data
+            .sections
+            .iter()
+            .map(|(name, _)| name.to_string())
+            .collect(),
+        Err(_) => return vec![],
+    }
+}
-- 
2.30.2