tape/changer: refactor marking of import/export slots from config

we did this for 'mtx', but missed it for the sg_pt_changer code
refactor it into the MtxStatus strut, and call it from both
code paths

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

src/tape/changer/mtx/mtx_wrapper.rs

@@ -1,45 +1,19 @@
-use std::collections::HashSet;
-
 use anyhow::Error;
 use serde_json::Value;
 
-use proxmox::{
-    api::schema::parse_property_string,
-};
-
 use crate::{
     tools::run_command,
-    api2::types::{
-        SLOT_ARRAY_SCHEMA,
-        ScsiTapeChanger,
-    },
-    tape::{
-        changer::{
-            MtxStatus,
-            mtx::{
-                parse_mtx_status,
-            },
-        },
+    api2::types::ScsiTapeChanger,
+    tape::changer::{
+        MtxStatus,
+        mtx::parse_mtx_status,
     },
 };
 
 /// Run 'mtx status' and return parsed result.
 pub fn mtx_status(config: &ScsiTapeChanger) -> Result<MtxStatus, Error> {
-
     let path = &config.path;
 
-    let mut export_slots: HashSet<u64> = HashSet::new();
-
-    if let Some(slots) = &config.export_slots {
-        let slots: Value = parse_property_string(&slots, &SLOT_ARRAY_SCHEMA)?;
-        export_slots = slots
-            .as_array()
-            .unwrap()
-            .iter()
-            .filter_map(|v| v.as_u64())
-            .collect();
-    }
-
     let mut command = std::process::Command::new("mtx");
     command.args(&["-f", path, "status"]);
 
@@ -47,12 +21,7 @@ pub fn mtx_status(config: &ScsiTapeChanger) -> Result<MtxStatus, Error> {
 
     let mut status = parse_mtx_status(&output)?;
 
-    for (i, entry) in status.slots.iter_mut().enumerate() {
-        let slot = i as u64 + 1;
-        if export_slots.contains(&slot) {
-            entry.import_export = true; // mark as IMPORT/EXPORT
-        }
-    }
+    status.mark_import_export_slots(&config)?;
 
     Ok(status)
 }