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|
pub mod bcachefs;
pub mod btree;
pub mod bkey;
pub mod errcode;
pub mod keyutils;
pub mod sb_io;
pub mod fs;
pub mod opts;
pub use paste::paste;
pub mod c {
pub use crate::bcachefs::*;
}
use c::bpos as Bpos;
pub const fn spos(inode: u64, offset: u64, snapshot: u32) -> Bpos {
Bpos { inode, offset, snapshot }
}
pub const fn pos(inode: u64, offset: u64) -> Bpos {
spos(inode, offset, 0)
}
pub const POS_MIN: Bpos = spos(0, 0, 0);
pub const POS_MAX: Bpos = spos(u64::MAX, u64::MAX, 0);
pub const SPOS_MAX: Bpos = spos(u64::MAX, u64::MAX, u32::MAX);
use std::cmp::Ordering;
impl PartialEq for Bpos {
fn eq(&self, other: &Self) -> bool {
self.cmp(other) == Ordering::Equal
}
}
impl Eq for Bpos {}
impl PartialOrd for Bpos {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl Ord for Bpos {
fn cmp(&self, other: &Self) -> Ordering {
let l_inode = self.inode;
let r_inode = other.inode;
let l_offset = self.offset;
let r_offset = other.offset;
let l_snapshot = self.snapshot;
let r_snapshot = other.snapshot;
l_inode.cmp(&r_inode)
.then(l_offset.cmp(&r_offset))
.then(l_snapshot.cmp(&r_snapshot))
}
}
use std::ffi::CStr;
use std::fmt;
impl fmt::Display for c::btree_id {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let s = unsafe { CStr::from_ptr(c::bch2_btree_id_str(*self)) };
let s = s.to_str().unwrap();
write!(f, "{}", s)
}
}
use std::str::FromStr;
use std::ffi::CString;
use std::{path::Path,os::unix::ffi::OsStrExt};
pub fn path_to_cstr<P: AsRef<Path>>(p: P) -> CString {
CString::new(p.as_ref().as_os_str().as_bytes()).unwrap()
}
use std::error::Error;
#[derive(Debug)]
pub struct InvalidBtreeId;
impl fmt::Display for InvalidBtreeId {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "invalid btree id")
}
}
impl Error for InvalidBtreeId {
}
impl FromStr for c::btree_id {
type Err = InvalidBtreeId;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let s = CString::new(s).unwrap();
let p = s.as_ptr();
let v = unsafe {c::match_string(c::__bch2_btree_ids[..].as_ptr(), (-(1 as isize)) as usize, p)};
if v >= 0 {
Ok(unsafe { std::mem::transmute(v) })
} else {
Err(InvalidBtreeId)
}
}
}
impl c::printbuf {
fn new() -> c::printbuf {
let mut buf: c::printbuf = Default::default();
buf.set_heap_allocated(true);
buf
}
}
impl Drop for c::printbuf {
fn drop(&mut self) {
unsafe { c::bch2_printbuf_exit(self) }
}
}
impl fmt::Display for Bpos {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let mut buf = c::printbuf::new();
unsafe { c::bch2_bpos_to_text(&mut buf, *self) };
let s = unsafe { CStr::from_ptr(buf.buf) };
let s = s.to_str().unwrap();
write!(f, "{}", s)
}
}
impl FromStr for c::bpos {
type Err = InvalidBtreeId;
fn from_str(s: &str) -> Result<Self, Self::Err> {
if s == "POS_MIN" {
return Ok(POS_MIN);
}
if s == "POS_MAX" {
return Ok(POS_MAX);
}
if s == "SPOS_MAX" {
return Ok(SPOS_MAX);
}
let mut fields = s.split(':');
let ino_str = fields.next().ok_or(InvalidBtreeId)?;
let off_str = fields.next().ok_or(InvalidBtreeId)?;
let snp_str = fields.next();
let ino: u64 = ino_str.parse().map_err(|_| InvalidBtreeId)?;
let off: u64 = off_str.parse().map_err(|_| InvalidBtreeId)?;
let snp: u32 = snp_str.map(|s| s.parse().ok()).flatten().unwrap_or(0);
Ok(c::bpos { inode: ino, offset: off, snapshot: snp })
}
}
pub fn printbuf_to_formatter<F>(f: &mut fmt::Formatter<'_>, func: F) -> fmt::Result
where F: Fn(*mut c::printbuf) {
let mut buf = c::printbuf::new();
func(&mut buf);
let s = unsafe { CStr::from_ptr(buf.buf) };
f.write_str(&s.to_string_lossy())
}
|
