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fix: fallback in Windows casefold for MS-DOS devices (#3700)

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三咲雅 misaki masa 2026-02-19 13:22:14 +08:00 • committed by GitHub
parent 9af792ef69
commit e49cdfe220
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2 changed files with 35 additions and 15 deletions
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46
yazi-fs/src/provider/local/casefold.rs
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@ -180,17 +180,12 @@ fn final_path(path: &Path) -> io::Result<PathBuf> {
#[cfg(target_os = "windows")]
fn final_path(path: &Path) -> io::Result<PathBuf> {
use std::{ffi::OsString, fs::File, os::windows::{ffi::OsStringExt, fs::OpenOptionsExt, io::AsRawHandle}};
use std::{ffi::OsString, fs::File, mem, os::windows::{ffi::{OsStrExt, OsStringExt}, fs::OpenOptionsExt, io::AsRawHandle}};
use either::Either;
use windows_sys::Win32::{Foundation::HANDLE, Storage::FileSystem::{FILE_FLAG_BACKUP_SEMANTICS, FILE_FLAG_OPEN_REPARSE_POINT, GetFinalPathNameByHandleW, VOLUME_NAME_DOS}};
use windows_sys::Win32::{Foundation::{HANDLE, INVALID_HANDLE_VALUE}, Storage::FileSystem::{FILE_FLAG_BACKUP_SEMANTICS, FILE_FLAG_OPEN_REPARSE_POINT, FindClose, FindFirstFileW, GetFinalPathNameByHandleW, VOLUME_NAME_DOS, WIN32_FIND_DATAW}};
let file = std::fs::OpenOptions::new()
.access_mode(0)
.custom_flags(FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT)
.open(path)?;
fn inner(file: &File, buf: &mut [u16]) -> io::Result<Either<PathBuf, u32>> {
fn by_handle(file: &File, buf: &mut [u16]) -> io::Result<Either<PathBuf, u32>> {
let len = unsafe {
GetFinalPathNameByHandleW(
file.as_raw_handle() as HANDLE,
@ -211,11 +206,36 @@ fn final_path(path: &Path) -> io::Result<PathBuf> {
})
}
match inner(&file, &mut [0u16; 512])? {
Either::Left(path) => Ok(path),
Either::Right(len) => inner(&file, &mut vec![0u16; len as usize])?
.left()
.ok_or_else(|| io::Error::new(io::ErrorKind::InvalidData, "path too long")),
fn by_find(path: &Path) -> io::Result<PathBuf> {
let Some(parent) = path.parent() else {
return Ok(path.to_path_buf());
};
let wide: Vec<u16> = path.as_os_str().encode_wide().chain([0]).collect();
let mut data = unsafe { mem::zeroed::<WIN32_FIND_DATAW>() };
match unsafe { FindFirstFileW(wide.as_ptr(), &mut data) } {
INVALID_HANDLE_VALUE => return Err(io::Error::last_os_error()),
handle => _ = unsafe { FindClose(handle) },
}
let name = data.cFileName.split(|&c| c == 0).next().unwrap_or(&data.cFileName);
Ok(parent.join(OsString::from_wide(name)))
}
let file = std::fs::OpenOptions::new()
.access_mode(0)
.custom_flags(FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT)
.open(path)?;
match by_handle(&file, &mut [0u16; 512]) {
Ok(Either::Left(path)) => Ok(path),
Ok(Either::Right(len)) => match by_handle(&file, &mut vec![0u16; len as usize])? {
Either::Left(path) => Ok(path),
Either::Right(_) => Err(io::Error::new(io::ErrorKind::InvalidData, "path too long")),
},
// Fallback for paths that GetFinalPathNameByHandleW cannot handle,
// such as those on DefineDosDeviceW-created devices (error 1005).
Err(_) => by_find(path),
}
}