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src/pxar/format_definition.rs: style fixup 

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Christian Ebner 2019-08-22 14:46:21 +02:00 committed by Wolfgang Bumiller
parent 7d83440c60
commit 4ea22b68d9
1 changed files with 27 additions and 28 deletions
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55
src/pxar/format_definition.rs
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@ -4,40 +4,38 @@
//!
//! The Archive contains a list of items. Each item starts with a
//! `PxarHeader`, followed by the item data.
use failure::*;
use std::cmp::Ordering;
use endian_trait::Endian;
use endian_trait::Endian;
use failure::{bail, Error};
use siphasher::sip::SipHasher24;
/// Header types identifying items stored in the archive
pub const PXAR_ENTRY: u64 = 0x1396fabcea5bbb51;
pub const PXAR_FILENAME: u64 = 0x6dbb6ebcb3161f0b;
pub const PXAR_SYMLINK: u64 = 0x664a6fb6830e0d6c;
pub const PXAR_DEVICE: u64 = 0xac3dace369dfe643;
pub const PXAR_XATTR: u64 = 0xb8157091f80bc486;
pub const PXAR_ACL_USER: u64 = 0x297dc88b2ef12faf;
pub const PXAR_ACL_GROUP: u64 = 0x36f2acb56cb3dd0b;
pub const PXAR_ACL_GROUP_OBJ: u64 = 0x23047110441f38f3;
pub const PXAR_ACL_DEFAULT: u64 = 0xfe3eeda6823c8cd0;
pub const PXAR_ACL_DEFAULT_USER: u64 = 0xbdf03df9bd010a91;
pub const PXAR_ACL_DEFAULT_GROUP: u64 = 0xa0cb1168782d1f51;
pub const PXAR_FCAPS: u64 = 0xf7267db0afed0629;
pub const PXAR_QUOTA_PROJID:u64 = 0x161baf2d8772a72b;
pub const PXAR_ENTRY: u64 = 0x1396fabcea5bbb51;
pub const PXAR_FILENAME: u64 = 0x6dbb6ebcb3161f0b;
pub const PXAR_SYMLINK: u64 = 0x664a6fb6830e0d6c;
pub const PXAR_DEVICE: u64 = 0xac3dace369dfe643;
pub const PXAR_XATTR: u64 = 0xb8157091f80bc486;
pub const PXAR_ACL_USER: u64 = 0x297dc88b2ef12faf;
pub const PXAR_ACL_GROUP: u64 = 0x36f2acb56cb3dd0b;
pub const PXAR_ACL_GROUP_OBJ: u64 = 0x23047110441f38f3;
pub const PXAR_ACL_DEFAULT: u64 = 0xfe3eeda6823c8cd0;
pub const PXAR_ACL_DEFAULT_USER: u64 = 0xbdf03df9bd010a91;
pub const PXAR_ACL_DEFAULT_GROUP: u64 = 0xa0cb1168782d1f51;
pub const PXAR_FCAPS: u64 = 0xf7267db0afed0629;
pub const PXAR_QUOTA_PROJID: u64 = 0x161baf2d8772a72b;
/// Marks item as hardlink
/// compute_goodbye_hash(b"__PROXMOX_FORMAT_HARDLINK__");
pub const PXAR_FORMAT_HARDLINK: u64 = 0x2c5e06f634f65b86;
pub const PXAR_FORMAT_HARDLINK: u64 = 0x2c5e06f634f65b86;
/// Marks the beginnig of the payload (actual content) of regular files
pub const PXAR_PAYLOAD: u64 = 0x8b9e1d93d6dcffc9;
pub const PXAR_PAYLOAD: u64 = 0x8b9e1d93d6dcffc9;
/// Marks item as entry of goodbye table
pub const PXAR_GOODBYE: u64 = 0xdfd35c5e8327c403;
pub const PXAR_GOODBYE: u64 = 0xdfd35c5e8327c403;
/// The end marker used in the GOODBYE object
pub const PXAR_GOODBYE_TAIL_MARKER: u64 = 0x57446fa533702943;
#[derive(Debug)]
#[derive(Endian)]
#[derive(Debug, Endian)]
#[repr(C)]
pub struct PxarHeader {
/// The size of the item, including the size of `PxarHeader`.
@ -79,15 +77,14 @@ pub struct PxarGoodbyeItem {
pub hash: u64,
}
/// Helper function to extract file names from binary archive.
pub 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])
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)
};
@ -205,7 +202,7 @@ pub struct PxarACLDefault {
pub mask_permissions: u64,
}
pub (crate) struct PxarACL {
pub(crate) struct PxarACL {
pub users: Vec<PxarACLUser>,
pub groups: Vec<PxarACLGroup>,
pub group_obj: Option<PxarACLGroupObj>,
@ -238,7 +235,6 @@ pub struct PxarAttributes {
/// Create SipHash values for goodby tables.
//pub fn compute_goodbye_hash(name: &std::ffi::CStr) -> u64 {
pub fn compute_goodbye_hash(name: &[u8]) -> u64 {
use std::hash::Hasher;
let mut hasher = SipHasher24::new_with_keys(0x8574442b0f1d84b3, 0x2736ed30d1c22ec1);
hasher.write(name);
@ -247,7 +243,11 @@ pub fn compute_goodbye_hash(name: &[u8]) -> u64 {
pub fn check_ca_header<T>(head: &PxarHeader, htype: u64) -> Result<(), Error> {
if head.htype != htype {
bail!("got wrong header type ({:016x} != {:016x})", head.htype, htype);
bail!(
"got wrong header type ({:016x} != {:016x})",
head.htype,
htype
);
}
if head.size != (std::mem::size_of::<T>() + std::mem::size_of::<PxarHeader>()) as u64 {
bail!("got wrong header size for type {:016x}", htype);
@ -255,4 +255,3 @@ pub fn check_ca_header<T>(head: &PxarHeader, htype: u64) -> Result<(), Error> {
Ok(())
}