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[lib.rs] Subject: [pbs-devel] [PATCH proxmox-backup 02/26] config: make RemovableDeviceConfig savable to config file X-BeenThere: pbs-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox Backup Server development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Jul 2022 13:09:20 -0000 Signed-off-by: Hannes Laimer --- 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 { + 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) -> Vec { + match config() { + Ok((data, _digest)) => data + .sections + .iter() + .map(|(name, _)| name.to_string()) + .collect(), + Err(_) => return vec![], + } +} -- 2.30.2