tape: implement erase media

src/api2/tape/drive.rs

@@ -17,6 +17,7 @@ use crate::{
         mtx_load,
         mtx_unload,
         linux_tape_device_list,
+        open_drive,
     },
 };
 
@@ -113,7 +114,39 @@ pub fn scan_drives(_param: Value) -> Result<Vec<TapeDeviceInfo>, Error> {
     Ok(list)
 }
 
+#[api(
+    input: {
+        properties: {
+            drive: {
+                schema: DRIVE_ID_SCHEMA,
+            },
+            fast: {
+                description: "Use fast erase.",
+                type: bool,
+                optional: true,
+                default: true,
+            },
+        },
+    },
+)]
+/// Erase media
+pub fn erase_media(drive: String, fast: Option<bool>) -> Result<(), Error> {
+
+    let (config, _digest) = config::drive::config()?;
+
+    let mut drive = open_drive(&config, &drive)?;
+
+    drive.erase_media(fast.unwrap_or(true))?;
+
+    Ok(())
+}
+
 pub const SUBDIRS: SubdirMap = &[
+    (
+        "erase-media",
+        &Router::new()
+            .put(&API_METHOD_ERASE_MEDIA)
+    ),
     (
         "load-slot",
         &Router::new()

src/bin/proxmox-tape.rs

@@ -1,16 +1,106 @@
+use anyhow::{format_err, Error};
+use serde_json::Value;
+
 use proxmox::{
     api::{
+        api,
         cli::*,
+        ApiHandler,
         RpcEnvironment,
+        section_config::SectionConfigData,
+    },
+};
+
+use proxmox_backup::{
+    api2::{
+        self,
+        types::{
+            DRIVE_ID_SCHEMA,
+        },
+    },
+    config::{
+        self,
+        drive::complete_drive_name,
     },
 };
 
 mod proxmox_tape;
 use proxmox_tape::*;
 
+fn lookup_drive_name(
+    param: &Value,
+    config: &SectionConfigData,
+) -> Result<String, Error> {
+
+    let drive = param["drive"]
+        .as_str()
+        .map(String::from)
+        .or_else(|| std::env::var("PROXMOX_TAPE_DRIVE").ok())
+        .or_else(||  {
+
+            let mut drive_names = Vec::new();
+
+            for (name, (section_type, _)) in config.sections.iter() {
+
+                if !(section_type == "linux" || section_type == "virtual") { continue; }
+                drive_names.push(name);
+            }
+
+            if drive_names.len() == 1 {
+                Some(drive_names[0].to_owned())
+            } else {
+                None
+            }
+        })
+        .ok_or_else(|| format_err!("unable to get (default) drive name"))?;
+
+    Ok(drive)
+}
+
+#[api(
+    input: {
+        properties: {
+            drive: {
+                schema: DRIVE_ID_SCHEMA,
+                optional: true,
+            },
+            fast: {
+                description: "Use fast erase.",
+                type: bool,
+                optional: true,
+                default: true,
+            },
+        },
+    },
+)]
+/// Erase media
+fn erase_media(
+    mut param: Value,
+    rpcenv: &mut dyn RpcEnvironment,
+) -> Result<(), Error> {
+
+    let (config, _digest) = config::drive::config()?;
+
+    param["drive"] = lookup_drive_name(&param, &config)?.into();
+
+    let info = &api2::tape::drive::API_METHOD_ERASE_MEDIA;
+
+    match info.handler {
+        ApiHandler::Sync(handler) => (handler)(param, info, rpcenv)?,
+        _ => unreachable!(),
+    };
+
+    Ok(())
+}
+
 fn main() {
 
     let cmd_def = CliCommandMap::new()
+        .insert(
+            "erase",
+            CliCommand::new(&API_METHOD_ERASE_MEDIA)
+                .completion_cb("drive", complete_drive_name)
+        )
         .insert("changer", changer_commands())
         .insert("drive", drive_commands())
         ;