mirror of
https://github.com/koverstreet/bcachefs-tools.git
synced 2025-02-10 00:00:04 +03:00
1f8fc31ddc
update makefile to output shared library and rust build fix default.nix to properly get the binary name for `ln`ing - move binary to main.rs add rustfmt and gitignore files move build.rs file into bch_bindgen for reuse between projects add outputs to nix flake and checks add mount.toml to makefile
59 lines
1.6 KiB
Rust
59 lines
1.6 KiB
Rust
use crate::bcachefs;
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pub const SUPERBLOCK_MAGIC: uuid::Uuid = uuid::Uuid::from_u128(
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0x_c68573f6_4e1a_45ca_8265_f57f48ba6d81
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);
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extern "C" {
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pub static stdout: *mut libc::FILE;
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}
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pub enum ReadSuperErr {
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Io(std::io::Error),
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}
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type RResult<T> = std::io::Result<std::io::Result<T>>;
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#[tracing_attributes::instrument(skip(opts))]
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pub fn read_super_opts(path: &std::path::Path, mut opts: bcachefs::bch_opts) -> RResult<bcachefs::bch_sb_handle> {
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// let devp = camino::Utf8Path::from_path(devp).unwrap();
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use std::os::unix::ffi::OsStrExt;
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let path = std::ffi::CString::new(path.as_os_str().as_bytes())?;
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let mut sb = std::mem::MaybeUninit::zeroed();
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// use gag::{BufferRedirect};
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// // Stop libbcachefs from spamming the output
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// let gag = BufferRedirect::stderr().unwrap();
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// tracing::trace!("entering libbcachefs");
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let ret = unsafe { crate::bcachefs::bch2_read_super(path.as_ptr(), &mut opts, sb.as_mut_ptr()) };
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tracing::trace!(%ret);
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match -ret {
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libc::EACCES => Err(std::io::Error::new(
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std::io::ErrorKind::PermissionDenied,
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"Access Permission Denied",
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)),
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0 => Ok(Ok(unsafe { sb.assume_init() })),
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22 => Ok(Err(std::io::Error::new(
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std::io::ErrorKind::InvalidData,
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"Not a BCacheFS SuperBlock",
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))),
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code => {
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tracing::debug!(msg = "BCacheFS return error code", ?code);
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Ok(Err(std::io::Error::new(
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std::io::ErrorKind::Other,
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"Failed to Read SuperBlock",
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)))
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}
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}
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}
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#[tracing_attributes::instrument]
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pub fn read_super(path: &std::path::Path) -> RResult<bcachefs::bch_sb_handle> {
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let opts = bcachefs::bch_opts::default(); //unsafe {std::mem::MaybeUninit::zeroed().assume_init()};
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read_super_opts(path, opts)
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}
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