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use std::mem;
use diskformat::*;
#[ derive (Copy, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd) ]
pub struct BtrfsInodeItem <'a> {
header: & 'a BtrfsLeafItemHeader,
data_bytes: & 'a [u8],
}
#[ repr (C, packed) ]
#[ derive (Copy, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd) ]
pub struct BtrfsInodeItemData {
generation: u64,
transaction_id: u64,
st_size: u64,
st_blocks: u64,
block_group: u64,
st_nlink: u32,
st_uid: u32,
st_gid: u32,
st_mode: u32,
st_rdev: u64,
flags: u64,
sequence: u64,
reserved: [u8; 0x20],
st_atime: [u8; 0xc],
st_ctime: [u8; 0xc],
st_mtime: [u8; 0xc],
otime: [u8; 0xc],
}
impl <'a> BtrfsInodeItem <'a> {
pub fn from_bytes (
header: & 'a BtrfsLeafItemHeader,
data_bytes: & 'a [u8],
) -> Result <BtrfsInodeItem <'a>, String> {
if data_bytes.len () != mem::size_of::<BtrfsInodeItemData> () {
return Err (
format! (
"Must be at exactly 0x{:x} bytes",
mem::size_of::<BtrfsInodeItemData> ()));
}
Ok (
BtrfsInodeItem {
header: header,
data_bytes: data_bytes,
}
)
}
pub fn header (& self) -> & BtrfsLeafItemHeader {
self.header
}
pub fn data (& self) -> & BtrfsInodeItemData {
unsafe {
& * (
self.data_bytes.as_ptr ()
as * const BtrfsInodeItemData
)
}
}
pub fn object_id (& self) -> u64 {
self.header.object_id ()
}
pub fn key (& self) -> BtrfsKey {
self.header.key ()
}
pub fn generation (& self) -> u64 {
self.data ().generation
}
pub fn transaction_id (& self) -> u64 {
self.data ().transaction_id
}
pub fn st_size (& self) -> u64 {
self.data ().st_size
}
pub fn st_blocks (& self) -> u64 {
self.data ().st_blocks
}
pub fn block_group (& self) -> u64 {
self.data ().block_group
}
pub fn st_nlink (& self) -> u32 {
self.data ().st_nlink
}
pub fn st_uid (& self) -> u32 {
self.data ().st_uid
}
pub fn st_gid (& self) -> u32 {
self.data ().st_gid
}
pub fn st_mode (& self) -> u32 {
self.data ().st_mode
}
pub fn st_rdev (& self) -> u64 {
self.data ().st_rdev
}
pub fn flags (& self) -> u64 {
self.data ().flags
}
pub fn sequence (& self) -> u64 {
self.data ().sequence
}
pub fn st_atime (& self) -> [u8; 0xc] {
self.data ().st_atime
}
pub fn st_ctime (& self) -> [u8; 0xc] {
self.data ().st_ctime
}
pub fn st_mtime (& self) -> [u8; 0xc] {
self.data ().st_mtime
}
pub fn otime (& self) -> [u8; 0xc] {
self.data ().otime
}
}