From b62b6cadf4a6fa2245032cabe809023066d07fcb Mon Sep 17 00:00:00 2001
From: Dietmar Maurer <dietmar@proxmox.com>
Date: Thu, 27 Dec 2018 09:22:23 +0100
Subject: [PATCH] start implementing catar

---
 src/catar/format_definition.rs | 45 ++++++++++++++++++++++++++++++++++
 src/lib.rs                     |  5 ++++
 2 files changed, 50 insertions(+)
 create mode 100644 src/catar/format_definition.rs

diff --git a/src/catar/format_definition.rs b/src/catar/format_definition.rs
new file mode 100644
index 00000000..bd52965b
--- /dev/null
+++ b/src/catar/format_definition.rs
@@ -0,0 +1,45 @@
+use failure::*;
+
+const CA_FORMAT_ENTRY: u64 = 0x1396fabcea5bbb51;
+const CA_FORMAT_FILENAME: u64 = 0x6dbb6ebcb3161f0b;
+
+const CA_FORMAT_GOODBYE: u64 = 0xdfd35c5e8327c403;
+/* The end marker used in the GOODBYE object */
+const CA_FORMAT_GOODBYE_TAIL_MARKER: u64 = 0x57446fa533702943;
+
+#[repr(C)]
+pub struct CaFormatHeader {
+    size: u64,
+    htype: u64,
+}
+
+#[repr(C)]
+pub struct CaFormatEntry {
+    feature_flags: u64,
+    mode: u64,
+    flags: u64,
+    uid: u64,
+    gid: u64,
+    mtime: u64,
+}
+
+#[repr(C)]
+pub struct CaFormatGoodbyeItem {
+    offset: u64,
+    size: u64,
+    hash: u64,
+}
+
+fn read_os_string(buffer: &[u8]) -> std::ffi::OsString {
+    let len = buffer.len();
+
+    use std::os::unix::ffi::OsStrExt;
+
+    let name = if len > 0 && buffer[len-1] == 0 {
+        std::ffi::OsStr::from_bytes(&buffer[0..len-1])
+    } else {
+        std::ffi::OsStr::from_bytes(&buffer)
+    };
+
+    name.into()
+}
diff --git a/src/lib.rs b/src/lib.rs
index cbf90d39..0d9ea664 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -30,6 +30,11 @@ pub mod server {
 
 }
 
+pub mod catar {
+
+    pub mod format_definition;
+}
+
 pub mod section_config;
 
 pub mod backup {