1 //! Archive definitions.
2 //!
3 //! These definitions are independent of read/write support, although we do implement
4 //! some traits useful for those.
5 
6 use crate::pod::Pod;
7 
8 /// File identification bytes stored at the beginning of the file.
9 pub const MAGIC: [u8; 8] = *b"!<arch>\n";
10 
11 /// File identification bytes stored at the beginning of a thin archive.
12 ///
13 /// A thin archive only contains a symbol table and file names.
14 pub const THIN_MAGIC: [u8; 8] = *b"!<thin>\n";
15 
16 /// The terminator for each archive member header.
17 pub const TERMINATOR: [u8; 2] = *b"`\n";
18 
19 /// The header at the start of an archive member.
20 #[derive(Debug, Clone, Copy)]
21 #[repr(C)]
22 pub struct Header {
23     /// The file name.
24     pub name: [u8; 16],
25     /// File modification timestamp in decimal.
26     pub date: [u8; 12],
27     /// User ID in decimal.
28     pub uid: [u8; 6],
29     /// Group ID in decimal.
30     pub gid: [u8; 6],
31     /// File mode in octal.
32     pub mode: [u8; 8],
33     /// File size in decimal.
34     pub size: [u8; 10],
35     /// Must be equal to `TERMINATOR`.
36     pub terminator: [u8; 2],
37 }
38 
39 unsafe_impl_pod!(Header);
40