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Remove FsPath and FsPathMnt trait

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Directly use Utf8CStr
This commit is contained in:
topjohnwu
2025-04-23 17:34:59 -07:00
committed by John Wu
parent 610945ac54
commit 3327fc668e
21 changed files with 62 additions and 89 deletions
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18
native/src/base/cstr.rs
View File

@@ -11,7 +11,7 @@ use std::str::Utf8Error;
use std::{fmt, mem, slice, str};
use thiserror::Error;
use crate::{FsPath, FsPathMnt, slice_from_ptr_mut};
use crate::slice_from_ptr_mut;
// Utf8CStr types are UTF-8 validated and null terminated strings.
//
// Several Utf8CStr types:
@@ -609,22 +609,6 @@ impl_cstr_buf_write!(
(Utf8CString,)
);
// impl<T: Deref<Target = Utf8CStr>> FsPath for T {}
// impl<T: Deref<Target = Utf8CStr>> FsPathMnt for T {}
macro_rules! impl_fs_path {
($( ($t:ty, $($g:tt)*) )*) => {$(
impl<$($g)*> FsPath for $t {}
impl<$($g)*> FsPathMnt for $t {}
)*}
}
impl_fs_path!(
(&Utf8CStr,)
(Utf8CStrBufRef<'_>,)
(Utf8CStrBufArr<N>, const N: usize)
(Utf8CString,)
);
#[macro_export]
macro_rules! cstr {
($str:expr) => {{

4
native/src/base/cxx_extern.rs
View File

@@ -8,8 +8,8 @@ use libc::{c_char, mode_t};
use crate::files::map_file_at;
pub(crate) use crate::xwrap::*;
use crate::{
CxxResultExt, Directory, FsPath, OsResultStatic, Utf8CStr, clone_attr, cstr, fclone_attr,
fd_path, map_fd, map_file, slice_from_ptr,
CxxResultExt, Directory, OsResultStatic, Utf8CStr, clone_attr, cstr, fclone_attr, fd_path,
map_fd, map_file, slice_from_ptr,
};
pub(crate) fn fd_path_for_cxx(fd: RawFd, buf: &mut [u8]) -> isize {

4
native/src/base/dir.rs
View File

@@ -1,7 +1,7 @@
use crate::cxx_extern::readlinkat;
use crate::{
FileAttr, FsPath, FsPathBuilder, LibcReturn, OsError, OsResult, OsResultStatic, Utf8CStr,
Utf8CStrBuf, cstr, errno, fd_path, fd_set_attr,
FileAttr, FsPathBuilder, LibcReturn, OsError, OsResult, OsResultStatic, Utf8CStr, Utf8CStrBuf,
cstr, errno, fd_path, fd_set_attr,
};
use libc::{EEXIST, O_CLOEXEC, O_CREAT, O_RDONLY, O_TRUNC, O_WRONLY, dirent, mode_t};
use std::fs::File;

63
native/src/base/files.rs
View File

@@ -14,7 +14,6 @@ use std::ffi::CStr;
use std::fmt::Display;
use std::fs::File;
use std::io::{BufRead, BufReader, Read, Seek, SeekFrom, Write};
use std::ops::Deref;
use std::os::fd::{AsFd, BorrowedFd};
use std::os::unix::ffi::OsStrExt;
use std::os::unix::io::{AsRawFd, FromRawFd, OwnedFd, RawFd};
@@ -187,27 +186,27 @@ impl FileAttr {
const XATTR_NAME_SELINUX: &CStr = c"security.selinux";
pub trait FsPath: Deref<Target = Utf8CStr> {
fn follow_link(&self) -> &FsPathFollow {
unsafe { mem::transmute(self.deref()) }
impl Utf8CStr {
pub fn follow_link(&self) -> &FsPathFollow {
unsafe { mem::transmute(self) }
}
fn open(&self, flags: i32) -> OsResult<File> {
pub fn open(&self, flags: i32) -> OsResult<File> {
Ok(File::from(open_fd(self, flags, 0)?))
}
fn create(&self, flags: i32, mode: mode_t) -> OsResult<File> {
pub fn create(&self, flags: i32, mode: mode_t) -> OsResult<File> {
Ok(File::from(open_fd(self, O_CREAT | flags, mode)?))
}
fn exists(&self) -> bool {
pub fn exists(&self) -> bool {
unsafe {
let mut st: stat = mem::zeroed();
libc::lstat(self.as_ptr(), &mut st) == 0
}
}
fn rename_to<'a>(&'a self, name: &'a Utf8CStr) -> OsResult<'a, ()> {
pub fn rename_to<'a>(&'a self, name: &'a Utf8CStr) -> OsResult<'a, ()> {
unsafe {
libc::rename(self.as_ptr(), name.as_ptr()).check_os_err(
"rename",
@@ -217,11 +216,11 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
}
}
fn remove(&self) -> OsResult<()> {
pub fn remove(&self) -> OsResult<()> {
unsafe { libc::remove(self.as_ptr()).check_os_err("remove", Some(self), None) }
}
fn remove_all(&self) -> OsResultStatic<()> {
pub fn remove_all(&self) -> OsResultStatic<()> {
let attr = self.get_attr()?;
if attr.is_dir() {
let mut dir = Directory::try_from(open_fd(self, O_RDONLY | O_CLOEXEC, 0)?)?;
@@ -231,7 +230,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
}
#[allow(clippy::unnecessary_cast)]
fn read_link(&self, buf: &mut dyn Utf8CStrBuf) -> OsResult<()> {
pub fn read_link(&self, buf: &mut dyn Utf8CStrBuf) -> OsResult<()> {
buf.clear();
unsafe {
let r = libc::readlink(self.as_ptr(), buf.as_mut_ptr(), buf.capacity() - 1)
@@ -242,7 +241,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
Ok(())
}
fn mkdir(&self, mode: mode_t) -> OsResult<()> {
pub fn mkdir(&self, mode: mode_t) -> OsResult<()> {
unsafe {
if libc::mkdir(self.as_ptr(), mode) < 0 {
if *errno() == EEXIST {
@@ -255,7 +254,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
Ok(())
}
fn mkdirs(&self, mode: mode_t) -> OsResultStatic<()> {
pub fn mkdirs(&self, mode: mode_t) -> OsResultStatic<()> {
if self.is_empty() {
return Ok(());
}
@@ -280,7 +279,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
}
// Inspired by https://android.googlesource.com/platform/bionic/+/master/libc/bionic/realpath.cpp
fn realpath(&self, buf: &mut dyn Utf8CStrBuf) -> OsResult<()> {
pub fn realpath(&self, buf: &mut dyn Utf8CStrBuf) -> OsResult<()> {
let fd = self.open(O_PATH | O_CLOEXEC)?;
let mut st1: libc::stat;
let mut st2: libc::stat;
@@ -304,7 +303,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
Ok(())
}
fn get_attr(&self) -> OsResult<FileAttr> {
pub fn get_attr(&self) -> OsResult<FileAttr> {
let mut attr = FileAttr::new();
unsafe {
libc::lstat(self.as_ptr(), &mut attr.st).check_os_err("lstat", Some(self), None)?;
@@ -315,7 +314,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
Ok(attr)
}
fn set_attr<'a>(&'a self, attr: &'a FileAttr) -> OsResult<'a, ()> {
pub fn set_attr<'a>(&'a self, attr: &'a FileAttr) -> OsResult<'a, ()> {
unsafe {
if !attr.is_symlink() {
libc::chmod(self.as_ptr(), (attr.st.st_mode & 0o777).as_()).check_os_err(
@@ -338,7 +337,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
Ok(())
}
fn get_secontext(&self, con: &mut dyn Utf8CStrBuf) -> OsResult<()> {
pub fn get_secontext(&self, con: &mut dyn Utf8CStrBuf) -> OsResult<()> {
unsafe {
let sz = libc::lgetxattr(
self.as_ptr(),
@@ -358,7 +357,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
Ok(())
}
fn set_secontext<'a>(&'a self, con: &'a Utf8CStr) -> OsResult<'a, ()> {
pub fn set_secontext<'a>(&'a self, con: &'a Utf8CStr) -> OsResult<'a, ()> {
unsafe {
libc::lsetxattr(
self.as_ptr(),
@@ -371,7 +370,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
}
}
fn copy_to(&self, path: &Utf8CStr) -> OsResultStatic<()> {
pub fn copy_to(&self, path: &Utf8CStr) -> OsResultStatic<()> {
let attr = self.get_attr()?;
if attr.is_dir() {
path.mkdir(0o777)?;
@@ -401,7 +400,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
Ok(())
}
fn move_to(&self, path: &Utf8CStr) -> OsResultStatic<()> {
pub fn move_to(&self, path: &Utf8CStr) -> OsResultStatic<()> {
if path.exists() {
let attr = path.get_attr()?;
if attr.is_dir() {
@@ -416,7 +415,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
Ok(())
}
fn parent(&self, buf: &mut dyn Utf8CStrBuf) -> bool {
pub fn parent(&self, buf: &mut dyn Utf8CStrBuf) -> bool {
buf.clear();
if let Some(parent) = Path::new(self.as_str()).parent() {
let bytes = parent.as_os_str().as_bytes();
@@ -430,7 +429,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
}
// ln self path
fn link_to(&self, path: &Utf8CStr) -> OsResultStatic<()> {
pub fn link_to(&self, path: &Utf8CStr) -> OsResultStatic<()> {
let attr = self.get_attr()?;
if attr.is_dir() {
path.mkdir(0o777)?;
@@ -451,7 +450,7 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
}
// ln -s target self
fn create_symlink_to<'a>(&'a self, target: &'a Utf8CStr) -> OsResult<'a, ()> {
pub fn create_symlink_to<'a>(&'a self, target: &'a Utf8CStr) -> OsResult<'a, ()> {
unsafe {
libc::symlink(target.as_ptr(), self.as_ptr()).check_os_err(
"symlink",
@@ -461,21 +460,17 @@ pub trait FsPath: Deref<Target = Utf8CStr> {
}
}
fn mkfifo(&self, mode: mode_t) -> OsResult<()> {
pub fn mkfifo(&self, mode: mode_t) -> OsResult<()> {
unsafe { libc::mkfifo(self.as_ptr(), mode).check_os_err("mkfifo", Some(self), None) }
}
}
impl FsPath for FsPathFollow {
fn follow_link(&self) -> &FsPathFollow {
self
}
fn exists(&self) -> bool {
impl FsPathFollow {
pub fn exists(&self) -> bool {
unsafe { libc::access(self.as_ptr(), F_OK) == 0 }
}
fn get_attr(&self) -> OsResult<FileAttr> {
pub fn get_attr(&self) -> OsResult<FileAttr> {
let mut attr = FileAttr::new();
unsafe {
libc::stat(self.as_ptr(), &mut attr.st).check_os_err("stat", Some(self), None)?;
@@ -486,7 +481,7 @@ impl FsPath for FsPathFollow {
Ok(attr)
}
fn set_attr<'a>(&'a self, attr: &'a FileAttr) -> OsResult<'a, ()> {
pub fn set_attr<'a>(&'a self, attr: &'a FileAttr) -> OsResult<'a, ()> {
unsafe {
libc::chmod(self.as_ptr(), (attr.st.st_mode & 0o777).as_()).check_os_err(
"chmod",
@@ -507,7 +502,7 @@ impl FsPath for FsPathFollow {
Ok(())
}
fn get_secontext(&self, con: &mut dyn Utf8CStrBuf) -> OsResult<()> {
pub fn get_secontext(&self, con: &mut dyn Utf8CStrBuf) -> OsResult<()> {
unsafe {
let sz = libc::getxattr(
self.as_ptr(),
@@ -527,7 +522,7 @@ impl FsPath for FsPathFollow {
Ok(())
}
fn set_secontext<'a>(&'a self, con: &'a Utf8CStr) -> OsResult<'a, ()> {
pub fn set_secontext<'a>(&'a self, con: &'a Utf8CStr) -> OsResult<'a, ()> {
unsafe {
libc::setxattr(
self.as_ptr(),

1
native/src/base/lib.rs
View File

@@ -15,7 +15,6 @@ pub use ffi::fork_dont_care;
pub use files::*;
pub use logging::*;
pub use misc::*;
pub use mount::*;
pub use result::*;
pub mod cstr;

15
native/src/base/mount.rs
View File

@@ -1,10 +1,9 @@
use crate::{LibcReturn, OsResult, Utf8CStr};
use libc::c_ulong;
use std::ops::Deref;
use std::ptr;
pub trait FsPathMnt: Deref<Target = Utf8CStr> {
fn bind_mount_to<'a>(&'a self, path: &'a Utf8CStr) -> OsResult<'a, ()> {
impl Utf8CStr {
pub fn bind_mount_to<'a>(&'a self, path: &'a Utf8CStr) -> OsResult<'a, ()> {
unsafe {
libc::mount(
self.as_ptr(),
@@ -17,7 +16,7 @@ pub trait FsPathMnt: Deref<Target = Utf8CStr> {
}
}
fn remount_with_flags(&self, flags: c_ulong) -> OsResult<()> {
pub fn remount_with_flags(&self, flags: c_ulong) -> OsResult<()> {
unsafe {
libc::mount(
ptr::null(),
@@ -30,7 +29,7 @@ pub trait FsPathMnt: Deref<Target = Utf8CStr> {
}
}
fn remount_with_data(&self, data: &Utf8CStr) -> OsResult<()> {
pub fn remount_with_data(&self, data: &Utf8CStr) -> OsResult<()> {
unsafe {
libc::mount(
ptr::null(),
@@ -43,7 +42,7 @@ pub trait FsPathMnt: Deref<Target = Utf8CStr> {
}
}
fn move_mount_to<'a>(&'a self, path: &'a Utf8CStr) -> OsResult<'a, ()> {
pub fn move_mount_to<'a>(&'a self, path: &'a Utf8CStr) -> OsResult<'a, ()> {
unsafe {
libc::mount(
self.as_ptr(),
@@ -56,13 +55,13 @@ pub trait FsPathMnt: Deref<Target = Utf8CStr> {
}
}
fn unmount(&self) -> OsResult<()> {
pub fn unmount(&self) -> OsResult<()> {
unsafe {
libc::umount2(self.as_ptr(), libc::MNT_DETACH).check_os_err("unmount", Some(self), None)
}
}
fn set_mount_private(&self, recursive: bool) -> OsResult<()> {
pub fn set_mount_private(&self, recursive: bool) -> OsResult<()> {
let flag = if recursive { libc::MS_REC } else { 0 };
unsafe {
libc::mount(

3
native/src/base/xwrap.rs
View File

@@ -2,8 +2,7 @@
use crate::cxx_extern::readlinkat;
use crate::{
BorrowedDirectory, CxxResultExt, FsPath, LibcReturn, Utf8CStr, cstr, slice_from_ptr,
slice_from_ptr_mut,
BorrowedDirectory, CxxResultExt, LibcReturn, Utf8CStr, cstr, slice_from_ptr, slice_from_ptr_mut,
};
use libc::{
c_char, c_uint, c_ulong, c_void, dev_t, mode_t, nfds_t, off_t, pollfd, sockaddr, socklen_t,