tape: cleanup - move tape file readers/writers into src/tape/file_formats folder

src/api2/tape/restore.rs

@@ -57,7 +57,6 @@ use crate::{
         TapeRead,
         MediaId,
         MediaCatalog,
-        ChunkArchiveDecoder,
         MediaPool,
         Inventory,
         file_formats::{
@@ -67,6 +66,7 @@ use crate::{
             PROXMOX_BACKUP_CONTENT_HEADER_MAGIC_1_0,
             PROXMOX_BACKUP_CHUNK_ARCHIVE_MAGIC_1_0,
             MediaContentHeader,
+            ChunkArchiveDecoder,
         },
         drive::{
             TapeDriver,

src/bin/proxmox-tape.rs

@@ -45,8 +45,8 @@ use proxmox_backup::{
         complete_media_set_uuid,
         file_formats::{
             PROXMOX_BACKUP_CONTENT_HEADER_MAGIC_1_0,
-            PROXMOX_BACKUP_CONTENT_NAME,
             MediaContentHeader,
+            proxmox_tape_magic_to_text,
         },
     },
 };
@@ -565,7 +565,7 @@ fn debug_scan(param: Value) -> Result<(), Error> {
                     Ok(header) => {
                         if header.magic != PROXMOX_BACKUP_CONTENT_HEADER_MAGIC_1_0 {
                             println!("got MediaContentHeader with wrong magic: {:?}", header.magic);
-                        } else if let Some(name) = PROXMOX_BACKUP_CONTENT_NAME.get(&header.content_magic) {
+                        } else if let Some(name) = proxmox_tape_magic_to_text(&header.content_magic) {
                             println!("got content header: {}", name);
                             println!("  uuid:  {}", header.content_uuid());
                             println!("  ctime: {}", strftime_local("%c", header.ctime)?);

src/tape/drive/linux_tape.rs

@@ -40,15 +40,13 @@ use crate::{
         },
         file_formats::{
             PROXMOX_TAPE_BLOCK_SIZE,
+            PROXMOX_BACKUP_MEDIA_SET_LABEL_MAGIC_1_0,
             MediaSetLabel,
             MediaContentHeader,
-            PROXMOX_BACKUP_MEDIA_SET_LABEL_MAGIC_1_0,
-        },
-        helpers::{
             BlockedReader,
             BlockedWriter,
         },
-    }
+    },
 };
 
 fn run_sg_tape_cmd(subcmd: &str, args: &[&str], fd: RawFd) -> Result<String, Error> {

src/tape/drive/virtual_tape.rs

@@ -30,12 +30,12 @@ use crate::{
             MediaSetLabel,
             MediaContentHeader,
             PROXMOX_BACKUP_MEDIA_SET_LABEL_MAGIC_1_0,
+            BlockedReader,
+            BlockedWriter,
         },
         helpers::{
             EmulateTapeReader,
             EmulateTapeWriter,
-            BlockedReader,
-            BlockedWriter,
         },
     },
 };

src/tape/file_formats/mod.rs

@@ -1,4 +1,17 @@
-//! File format definitions for data written to tapes
+//! File format definitions and implementations for data written to
+//! tapes
+
+mod blocked_reader;
+pub use blocked_reader::*;
+
+mod blocked_writer;
+pub use blocked_writer::*;
+
+mod chunk_archive;
+pub use chunk_archive::*;
+
+mod snapshot_archive;
+pub use snapshot_archive::*;
 
 use std::collections::HashMap;
 
@@ -33,8 +46,8 @@ pub const PROXMOX_BACKUP_CHUNK_ARCHIVE_ENTRY_MAGIC_1_0: [u8; 8] = [72, 87, 109,
 pub const PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_0: [u8; 8] = [9, 182, 2, 31, 125, 232, 114, 133];
 
 lazy_static::lazy_static!{
-    /// Map content Uuid to human readable names.
-    pub static ref PROXMOX_BACKUP_CONTENT_NAME: HashMap<&'static [u8;8], &'static str> = {
+    // Map content magic numbers to human readable names.
+    static ref PROXMOX_TAPE_CONTENT_NAME: HashMap<&'static [u8;8], &'static str> = {
         let mut map = HashMap::new();
         map.insert(&PROXMOX_BACKUP_MEDIA_LABEL_MAGIC_1_0, "Proxmox Backup Tape Label v1.0");
         map.insert(&PROXMOX_BACKUP_MEDIA_SET_LABEL_MAGIC_1_0, "Proxmox Backup MediaSet Label v1.0");
@@ -44,6 +57,11 @@ lazy_static::lazy_static!{
     };
 }
 
+/// Map content magic numbers to human readable names.
+pub fn proxmox_tape_magic_to_text(magic: &[u8; 8]) -> Option<String> {
+    PROXMOX_TAPE_CONTENT_NAME.get(magic).map(|s| String::from(*s))
+}
+
 /// Tape Block Header with data payload
 ///
 /// All tape files are written as sequence of blocks.

src/tape/helpers/mod.rs

@@ -4,11 +4,5 @@ pub use emulate_tape_writer::*;
 mod emulate_tape_reader;
 pub use emulate_tape_reader::*;
 
-mod blocked_reader;
-pub use blocked_reader::*;
-
-mod blocked_writer;
-pub use blocked_writer::*;
-
 mod snapshot_reader;
 pub use snapshot_reader::*;

src/tape/mod.rs

@@ -40,12 +40,6 @@ pub use media_pool::*;
 mod media_catalog;
 pub use media_catalog::*;
 
-mod chunk_archive;
-pub use chunk_archive::*;
-
-mod snapshot_archive;
-pub use snapshot_archive::*;
-
 mod pool_writer;
 pub use pool_writer::*;
 

src/tape/pool_writer.rs

@@ -16,15 +16,17 @@ use crate::{
         MAX_CHUNK_ARCHIVE_SIZE,
         COMMIT_BLOCK_SIZE,
         TapeWrite,
-        ChunkArchiveWriter,
         SnapshotReader,
         SnapshotChunkIterator,
         MediaPool,
         MediaId,
         MediaCatalog,
         MediaSetCatalog,
+        file_formats::{
+            MediaSetLabel,
+            ChunkArchiveWriter,
             tape_write_snapshot_archive,
-        file_formats::MediaSetLabel,
+        },
         drive::{
             TapeDriver,
             request_and_load_media,