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Introduce UtfCString

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This commit is contained in:
topjohnwu 2023-09-27 15:21:24 -07:00
parent a55d570213
commit 6e7a995716
8 changed files with 202 additions and 142 deletions
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288
native/src/base/cstr.rs
View File

@ -10,6 +10,27 @@ use crate::slice_from_ptr_mut;
use libc::c_char;
use thiserror::Error;
// Utf8CStr types are UTF-8 validated and null terminated strings.
//
// Several Utf8CStr types:
//
// Utf8CStr: can only exist as reference, similar to &str
// Utf8CString: dynamically sized buffer allocated on the heap
// Utf8CStrBufRef: reference to a fixed sized buffer
// Utf8CStrBufArr<N>: fixed sized buffer allocated on the stack
//
// In most cases, these are the types being used
//
// &Utf8CStr: whenever a printable null terminated string is needed
// &mut dyn Utf8CStrWrite: whenever we need a buffer that only needs to support appending
// strings to the end, and has to be null terminated
// &mut dyn Utf8CStrBuf: whenever we need a pre-allocated buffer that is large enough to fit
// in the result, and has to be null terminated
//
// All types dereferences to &Utf8CStr.
// Utf8CString, Utf8CStrBufRef, and Utf8CStrBufArr<N> implements Utf8CStrWrite.
// Utf8CStrBufRef and Utf8CStrBufArr<N> implements Utf8CStrBuf.
pub fn copy_cstr<T: AsRef<CStr> + ?Sized>(dest: &mut [u8], src: &T) -> usize {
let src = src.as_ref().to_bytes_with_nul();
let len = min(src.len(), dest.len());
@ -17,7 +38,7 @@ pub fn copy_cstr<T: AsRef<CStr> + ?Sized>(dest: &mut [u8], src: &T) -> usize {
len - 1
}
fn utf8_cstr_append(buf: &mut dyn Utf8CStrBuf, s: &[u8]) -> usize {
fn utf8_cstr_buf_append(buf: &mut dyn Utf8CStrBuf, s: &[u8]) -> usize {
let mut used = buf.len();
if used >= buf.capacity() - 1 {
// Truncate
@ -32,28 +53,35 @@ fn utf8_cstr_append(buf: &mut dyn Utf8CStrBuf, s: &[u8]) -> usize {
len
}
fn utf8_cstr_append_lossy(buf: &mut dyn Utf8CStrBuf, s: &[u8]) -> usize {
fn utf8_cstr_append_lossy(buf: &mut dyn Utf8CStrWrite, s: &[u8]) -> usize {
let chunks = Utf8Chunks::new(s);
let mut len = 0_usize;
for chunk in chunks {
len += utf8_cstr_append(buf, chunk.valid().as_bytes());
len += buf.push_str(chunk.valid());
if !chunk.invalid().is_empty() {
len += utf8_cstr_append(
buf,
char::REPLACEMENT_CHARACTER
.encode_utf8(&mut [0; 4])
.as_bytes(),
);
len += buf.push_str(char::REPLACEMENT_CHARACTER.encode_utf8(&mut [0; 4]));
}
}
len
}
pub trait Utf8CStrBuf:
// Trait definitions
pub trait Utf8CStrWrite:
Write + AsRef<Utf8CStr> + AsMut<Utf8CStr> + Deref<Target = Utf8CStr> + DerefMut
{
fn buf(&self) -> &[u8];
fn len(&self) -> usize;
#[inline(always)]
fn is_empty(&self) -> bool {
self.len() == 0
}
fn push_str(&mut self, s: &str) -> usize;
fn push_lossy(&mut self, s: &[u8]) -> usize;
fn clear(&mut self);
}
pub trait Utf8CStrBuf: Utf8CStrWrite {
fn buf(&self) -> &[u8];
// Modifying the underlying buffer or length is unsafe because it can either:
// 1. Break null termination
@ -62,29 +90,92 @@ pub trait Utf8CStrBuf:
unsafe fn mut_buf(&mut self) -> &mut [u8];
unsafe fn set_len(&mut self, len: usize);
fn append(&mut self, s: &str) -> usize;
fn append_lossy(&mut self, s: &[u8]) -> usize;
unsafe fn append_unchecked(&mut self, s: &[u8]) -> usize;
#[inline(always)]
fn is_empty(&self) -> bool {
self.len() == 0
}
#[inline(always)]
fn capacity(&self) -> usize {
self.buf().len()
}
}
trait AsUtf8CStr {
fn as_utf8_cstr(&self) -> &Utf8CStr;
fn as_utf8_cstr_mut(&mut self) -> &mut Utf8CStr;
}
// Implementation for Utf8CString
trait StringExt {
fn nul_terminate(&mut self) -> &mut [u8];
}
impl StringExt for String {
fn nul_terminate(&mut self) -> &mut [u8] {
self.reserve(1);
// SAFETY: the string is reserved to have enough capacity to fit in the null byte
// SAFETY: the null byte is explicitly added outside of the string's length
unsafe {
let buf = slice::from_raw_parts_mut(self.as_mut_ptr(), self.len() + 1);
*buf.get_unchecked_mut(self.len()) = b'\0';
buf
}
}
}
#[derive(Default)]
pub struct Utf8CString(String);
impl Utf8CString {
#[inline(always)]
pub fn new() -> Self {
Self::default()
}
}
impl AsUtf8CStr for Utf8CString {
#[inline(always)]
fn as_utf8_cstr(&self) -> &Utf8CStr {
// SAFETY: the internal string is always null terminated
unsafe { mem::transmute(slice::from_raw_parts(self.0.as_ptr(), self.0.len() + 1)) }
}
#[inline(always)]
fn as_utf8_cstr_mut(&mut self) -> &mut Utf8CStr {
Utf8CStr::from_string(&mut self.0)
}
}
impl Utf8CStrWrite for Utf8CString {
#[inline(always)]
fn len(&self) -> usize {
self.0.len()
}
fn push_str(&mut self, s: &str) -> usize {
self.0.push_str(s);
self.0.nul_terminate();
s.len()
}
#[inline(always)]
fn push_lossy(&mut self, s: &[u8]) -> usize {
utf8_cstr_append_lossy(self, s)
}
fn clear(&mut self) {
unsafe {
self.mut_buf()[0] = b'\0';
self.set_len(0);
}
self.0.clear();
self.0.nul_terminate();
}
}
trait Utf8CStrBufImpl: Utf8CStrBuf {
impl From<String> for Utf8CString {
fn from(mut value: String) -> Self {
value.nul_terminate();
Utf8CString(value)
}
}
// Implementations for Utf8CStrBuf
impl<T: Utf8CStrBuf> AsUtf8CStr for T {
#[inline(always)]
fn as_utf8_cstr(&self) -> &Utf8CStr {
// SAFETY: the internal buffer is always UTF-8 checked
@ -104,35 +195,30 @@ trait Utf8CStrBufImpl: Utf8CStrBuf {
}
// UTF-8 validated + null terminated reference to buffer
pub struct Utf8CStrSlice<'a> {
pub struct Utf8CStrBufRef<'a> {
used: usize,
buf: &'a mut [u8],
}
impl<'a> Utf8CStrSlice<'a> {
pub unsafe fn from_ptr(buf: *mut u8, len: usize) -> Utf8CStrSlice<'a> {
impl<'a> Utf8CStrBufRef<'a> {
pub unsafe fn from_ptr(buf: *mut u8, len: usize) -> Utf8CStrBufRef<'a> {
Self::from(slice_from_ptr_mut(buf, len))
}
}
impl<'a> From<&'a mut [u8]> for Utf8CStrSlice<'a> {
fn from(buf: &'a mut [u8]) -> Utf8CStrSlice<'a> {
impl<'a> From<&'a mut [u8]> for Utf8CStrBufRef<'a> {
fn from(buf: &'a mut [u8]) -> Utf8CStrBufRef<'a> {
buf[0] = b'\0';
Utf8CStrSlice { used: 0, buf }
Utf8CStrBufRef { used: 0, buf }
}
}
impl Utf8CStrBuf for Utf8CStrSlice<'_> {
impl Utf8CStrBuf for Utf8CStrBufRef<'_> {
#[inline(always)]
fn buf(&self) -> &[u8] {
self.buf
}
#[inline(always)]
fn len(&self) -> usize {
self.used
}
#[inline(always)]
unsafe fn mut_buf(&mut self) -> &mut [u8] {
self.buf
@ -142,49 +228,29 @@ impl Utf8CStrBuf for Utf8CStrSlice<'_> {
unsafe fn set_len(&mut self, len: usize) {
self.used = len;
}
#[inline(always)]
fn append(&mut self, s: &str) -> usize {
utf8_cstr_append(self, s.as_bytes())
}
#[inline(always)]
fn append_lossy(&mut self, s: &[u8]) -> usize {
utf8_cstr_append_lossy(self, s)
}
#[inline(always)]
unsafe fn append_unchecked(&mut self, s: &[u8]) -> usize {
utf8_cstr_append(self, s)
}
}
// UTF-8 validated + null terminated buffer on the stack
pub struct Utf8CStrArr<const N: usize> {
pub struct Utf8CStrBufArr<const N: usize> {
used: usize,
buf: [u8; N],
}
impl<const N: usize> Utf8CStrArr<N> {
impl<const N: usize> Utf8CStrBufArr<N> {
pub fn new() -> Self {
Utf8CStrArr {
Utf8CStrBufArr {
used: 0,
buf: [0; N],
}
}
}
impl<const N: usize> Utf8CStrBuf for Utf8CStrArr<N> {
impl<const N: usize> Utf8CStrBuf for Utf8CStrBufArr<N> {
#[inline(always)]
fn buf(&self) -> &[u8] {
&self.buf
}
#[inline(always)]
fn len(&self) -> usize {
self.used
}
#[inline(always)]
unsafe fn mut_buf(&mut self) -> &mut [u8] {
&mut self.buf
@ -195,30 +261,15 @@ impl<const N: usize> Utf8CStrBuf for Utf8CStrArr<N> {
self.used = len;
}
#[inline(always)]
fn append(&mut self, s: &str) -> usize {
utf8_cstr_append(self, s.as_bytes())
}
#[inline(always)]
fn append_lossy(&mut self, s: &[u8]) -> usize {
utf8_cstr_append_lossy(self, s)
}
#[inline(always)]
unsafe fn append_unchecked(&mut self, s: &[u8]) -> usize {
utf8_cstr_append(self, s)
}
#[inline(always)]
fn capacity(&self) -> usize {
N
}
}
impl Default for Utf8CStrArr<4096> {
impl Default for Utf8CStrBufArr<4096> {
fn default() -> Self {
Utf8CStrArr::<4096>::new()
Utf8CStrBufArr::<4096>::new()
}
}
@ -232,24 +283,6 @@ pub enum StrErr {
NullPointerError,
}
// Provide a way to have a heap allocated, UTF-8 validated, and null terminated string
pub trait StringExt {
fn nul_terminate(&mut self) -> &mut [u8];
}
impl StringExt for String {
fn nul_terminate(&mut self) -> &mut [u8] {
self.reserve(1);
// SAFETY: the string is reserved to have enough capacity to fit in the null byte
// SAFETY: the null byte is explicitly added outside of the string's length
unsafe {
let buf = slice::from_raw_parts_mut(self.as_mut_ptr(), self.len() + 1);
*buf.get_unchecked_mut(self.len()) = b'\0';
buf
}
}
}
// UTF-8 validated + null terminated string slice
pub struct Utf8CStr([u8]);
@ -378,28 +411,28 @@ impl DerefMut for FsPath {
}
}
pub struct FsPathBuf<'a>(&'a mut dyn Utf8CStrBuf);
pub struct FsPathBuf<'a>(&'a mut dyn Utf8CStrWrite);
impl<'a> FsPathBuf<'a> {
pub fn new(value: &'a mut dyn Utf8CStrBuf) -> Self {
pub fn new(value: &'a mut dyn Utf8CStrWrite) -> Self {
FsPathBuf(value)
}
pub fn join<T: AsRef<str>>(self, path: T) -> Self {
fn inner(buf: &mut dyn Utf8CStrBuf, path: &str) {
fn inner(buf: &mut dyn Utf8CStrWrite, path: &str) {
if path.starts_with('/') {
buf.clear();
} else {
buf.append("/");
buf.push_str("/");
}
buf.append(path);
buf.push_str(path);
}
inner(self.0, path.as_ref());
self
}
pub fn join_fmt<T: Display>(self, name: T) -> Self {
fn inner(buf: &mut dyn Utf8CStrBuf, path: Arguments) {
fn inner(buf: &mut dyn Utf8CStrWrite, path: Arguments) {
buf.write_fmt(path).ok();
}
inner(self.0, format_args!("/{}", name));
@ -504,22 +537,17 @@ impl_str!(
(Utf8CStr,)
(FsPath,)
(FsPathBuf<'_>,)
(Utf8CStrBufRef<'_>,)
(Utf8CStrBufArr<N>, const N: usize)
(Utf8CString,)
);
macro_rules! impl_str_buf {
macro_rules! impl_str_write {
($( ($t:ty, $($g:tt)*) )*) => {$(
impl_str!(($t, $($g)*));
impl<$($g)*> $t {
#[inline(always)]
pub fn append<T: AsRef<str>>(&mut self, s: T) -> usize {
utf8_cstr_append(self, s.as_ref().as_bytes())
}
}
impl<$($g)*> Utf8CStrBufImpl for $t {}
impl<$($g)*> Write for $t {
#[inline(always)]
fn write_str(&mut self, s: &str) -> fmt::Result {
self.append(s);
self.push_str(s);
Ok(())
}
}
@ -546,9 +574,41 @@ macro_rules! impl_str_buf {
)*}
}
impl_str_write!(
(Utf8CStrBufRef<'_>,)
(Utf8CStrBufArr<N>, const N: usize)
(Utf8CString,)
);
macro_rules! impl_str_buf {
($( ($t:ty, $($g:tt)*) )*) => {$(
impl<$($g)*> Utf8CStrWrite for $t {
#[inline(always)]
fn len(&self) -> usize {
self.used
}
#[inline(always)]
fn push_str(&mut self, s: &str) -> usize {
utf8_cstr_buf_append(self, s.as_bytes())
}
#[inline(always)]
fn push_lossy(&mut self, s: &[u8]) -> usize {
utf8_cstr_append_lossy(self, s)
}
#[inline(always)]
fn clear(&mut self) {
unsafe {
self.mut_buf()[0] = b'\0';
self.set_len(0);
}
}
}
)*}
}
impl_str_buf!(
(Utf8CStrSlice<'_>,)
(Utf8CStrArr<N>, const N: usize)
(Utf8CStrBufRef<'_>,)
(Utf8CStrBufArr<N>, const N: usize)
);
// The cstr! macro is copied from https://github.com/bytecodealliance/rustix/blob/main/src/cstr.rs

6
native/src/base/cxx_extern.rs
View File

@ -10,11 +10,11 @@ use libc::mode_t;
use crate::logging::CxxResultExt;
pub(crate) use crate::xwrap::*;
use crate::{
clone_attr, fclone_attr, fd_path, map_fd, map_file, Directory, FsPath, Utf8CStr, Utf8CStrSlice,
clone_attr, fclone_attr, fd_path, map_fd, map_file, Directory, FsPath, Utf8CStr, Utf8CStrBufRef,
};
pub(crate) fn fd_path_for_cxx(fd: RawFd, buf: &mut [u8]) -> isize {
let mut buf = Utf8CStrSlice::from(buf);
let mut buf = Utf8CStrBufRef::from(buf);
fd_path(fd, &mut buf)
.log_cxx_with_msg(|w| w.write_str("fd_path failed"))
.map_or(-1_isize, |_| buf.len() as isize)
@ -24,7 +24,7 @@ pub(crate) fn fd_path_for_cxx(fd: RawFd, buf: &mut [u8]) -> isize {
unsafe extern "C" fn canonical_path(path: *const c_char, buf: *mut u8, bufsz: usize) -> isize {
match Utf8CStr::from_ptr(path) {
Ok(p) => {
let mut buf = Utf8CStrSlice::from_ptr(buf, bufsz);
let mut buf = Utf8CStrBufRef::from_ptr(buf, bufsz);
FsPath::from(p)
.realpath(&mut buf)
.map_or(-1, |_| buf.len() as isize)

24
native/src/base/files.rs
View File

@ -20,8 +20,8 @@ use num_traits::AsPrimitive;
use crate::cxx_extern::readlinkat_for_cxx;
use crate::{
copy_cstr, cstr, errno, error, FsPath, FsPathBuf, LibcReturn, Utf8CStr, Utf8CStrArr,
Utf8CStrBuf,
copy_cstr, cstr, errno, error, FsPath, FsPathBuf, LibcReturn, Utf8CStr, Utf8CStrBuf,
Utf8CStrBufArr,
};
pub fn __open_fd_impl(path: &Utf8CStr, flags: i32, mode: mode_t) -> io::Result<OwnedFd> {
@ -42,7 +42,7 @@ macro_rules! open_fd {
}
pub fn fd_path(fd: RawFd, buf: &mut dyn Utf8CStrBuf) -> io::Result<()> {
let mut arr = Utf8CStrArr::<40>::new();
let mut arr = Utf8CStrBufArr::<40>::new();
let path = FsPathBuf::new(&mut arr).join("/proc/self/fd").join_fmt(fd);
path.read_link(buf)
}
@ -140,7 +140,7 @@ impl<T: Write> WriteExt for T {
pub struct FileAttr {
pub st: libc::stat,
pub con: Utf8CStrArr<128>,
pub con: Utf8CStrBufArr<128>,
}
const XATTR_NAME_SELINUX: &[u8] = b"security.selinux\0";
@ -168,8 +168,8 @@ impl DirEntry<'_> {
pub fn path(&self, buf: &mut dyn Utf8CStrBuf) -> io::Result<()> {
self.dir.path(buf)?;
buf.append("/");
buf.append_lossy(self.d_name().to_bytes());
buf.push_str("/");
buf.push_lossy(self.d_name().to_bytes());
Ok(())
}
@ -227,13 +227,13 @@ impl DirEntry<'_> {
}
pub fn get_attr(&self) -> io::Result<FileAttr> {
let mut path = Utf8CStrArr::default();
let mut path = Utf8CStrBufArr::default();
self.path(&mut path)?;
FsPath::from(path).get_attr()
}
pub fn set_attr(&self, attr: &FileAttr) -> io::Result<()> {
let mut path = Utf8CStrArr::default();
let mut path = Utf8CStrBufArr::default();
self.path(&mut path)?;
FsPath::from(path).set_attr(attr)
}
@ -367,7 +367,7 @@ impl Directory {
std::io::copy(&mut src, &mut dest)?;
fd_set_attr(dest.as_raw_fd(), &attr)?;
} else if e.is_lnk() {
let mut path = Utf8CStrArr::default();
let mut path = Utf8CStrBufArr::default();
e.read_link(&mut path)?;
unsafe {
libc::symlinkat(path.as_ptr(), dir.as_raw_fd(), e.d_name.as_ptr())
@ -629,7 +629,7 @@ impl FsPath {
unsafe {
attr = FileAttr {
st: mem::zeroed(),
con: Utf8CStrArr::new(),
con: Utf8CStrBufArr::new(),
};
libc::lstat(self.as_ptr(), &mut attr.st).as_os_err()?;
if SELINUX_ENABLED.load(Ordering::Relaxed) {
@ -681,7 +681,7 @@ impl FsPath {
let mut dest = path.create(O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, 0o777)?;
std::io::copy(&mut src, &mut dest)?;
} else if (attr.st.st_mode & libc::S_IFMT as c_uint) == S_IFLNK.as_() {
let mut buf = Utf8CStrArr::default();
let mut buf = Utf8CStrBufArr::default();
self.read_link(&mut buf)?;
unsafe {
libc::symlink(buf.as_ptr(), path.as_ptr()).as_os_err()?;
@ -725,7 +725,7 @@ pub fn fd_get_attr(fd: RawFd) -> io::Result<FileAttr> {
unsafe {
attr = FileAttr {
st: mem::zeroed(),
con: Utf8CStrArr::new(),
con: Utf8CStrBufArr::new(),
};
libc::fstat(fd, &mut attr.st).as_os_err()?;
if SELINUX_ENABLED.load(Ordering::Relaxed) {

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

@ -5,7 +5,7 @@ use std::panic::Location;
use std::process::exit;
use crate::ffi::LogLevel;
use crate::{Utf8CStr, Utf8CStrArr};
use crate::{Utf8CStr, Utf8CStrBufArr};
// Error handling and logging throughout the Rust codebase in Magisk:
//
@ -98,7 +98,7 @@ pub fn log_from_cxx(level: LogLevel, msg: &[u8]) {
pub fn log_with_formatter<F: FnOnce(Formatter) -> fmt::Result>(level: LogLevel, f: F) {
log_with_writer(level, |write| {
let mut buf = Utf8CStrArr::default();
let mut buf = Utf8CStrBufArr::default();
f(&mut buf).ok();
write(level, &buf);
});

6
native/src/base/xwrap.rs
View File

@ -10,7 +10,7 @@ use libc::{
};
use crate::cxx_extern::readlinkat_for_cxx;
use crate::{cstr, errno, raw_cstr, CxxResultExt, FsPath, Utf8CStr, Utf8CStrSlice};
use crate::{cstr, errno, raw_cstr, CxxResultExt, FsPath, Utf8CStr, Utf8CStrBufRef};
fn ptr_to_str<'a, T>(ptr: *const T) -> &'a str {
if ptr.is_null() {
@ -65,7 +65,7 @@ mod c_export {
unsafe extern "C" fn xrealpath(path: *const c_char, buf: *mut u8, bufsz: usize) -> isize {
match Utf8CStr::from_ptr(path) {
Ok(p) => {
let mut buf = Utf8CStrSlice::from_ptr(buf, bufsz);
let mut buf = Utf8CStrBufRef::from_ptr(buf, bufsz);
FsPath::from(p)
.realpath(&mut buf)
.log_cxx_with_msg(|w| w.write_fmt(format_args!("realpath {} failed", p)))
@ -79,7 +79,7 @@ unsafe extern "C" fn xrealpath(path: *const c_char, buf: *mut u8, bufsz: usize)
unsafe extern "C" fn xreadlink(path: *const c_char, buf: *mut u8, bufsz: usize) -> isize {
match Utf8CStr::from_ptr(path) {
Ok(p) => {
let mut buf = Utf8CStrSlice::from_ptr(buf, bufsz);
let mut buf = Utf8CStrBufRef::from_ptr(buf, bufsz);
FsPath::from(p)
.read_link(&mut buf)
.log_cxx_with_msg(|w| w.write_fmt(format_args!("readlink {} failed", p)))

6
native/src/core/daemon.rs
View File

@ -3,7 +3,7 @@ use std::fs::File;
use std::io;
use std::sync::{Mutex, OnceLock};
use base::{cstr, Directory, ResultExt, Utf8CStr, Utf8CStrBuf, Utf8CStrSlice, WalkResult};
use base::{cstr, Directory, ResultExt, Utf8CStr, Utf8CStrBuf, Utf8CStrBufRef, WalkResult};
use crate::logging::{magisk_logging, zygisk_logging};
@ -57,11 +57,11 @@ pub fn find_apk_path(pkg: &[u8], data: &mut [u8]) -> usize {
Ok(Skip)
})?;
if !buf.is_empty() {
buf.append("/base.apk");
buf.push_str("/base.apk");
}
Ok(buf.len())
}
inner(pkg, &mut Utf8CStrSlice::from(data))
inner(pkg, &mut Utf8CStrBufRef::from(data))
.log()
.unwrap_or(0)
}

2
native/src/core/logging.rs
View File

@ -245,7 +245,7 @@ extern "C" fn logfile_writer(arg: *mut c_void) -> *mut c_void {
let mut meta = LogMeta::zeroed();
let mut msg_buf = [0u8; MAX_MSG_LEN];
let mut aux = Utf8CStrArr::<64>::new();
let mut aux = Utf8CStrBufArr::<64>::new();
loop {
// Read request

10
native/src/core/resetprop/persist.rs
View File

@ -13,7 +13,7 @@ use quick_protobuf::{BytesReader, MessageRead, MessageWrite, Writer};
use base::libc::{O_CLOEXEC, O_RDONLY};
use base::{
clone_attr, cstr, debug, libc::mkstemp, Directory, FsPath, FsPathBuf, LibcReturn, LoggedError,
LoggedResult, MappedFile, Utf8CStr, Utf8CStrArr, WalkResult,
LoggedResult, MappedFile, Utf8CStr, Utf8CStrBufArr, WalkResult,
};
use crate::ffi::{prop_cb_exec, PropCb};
@ -81,7 +81,7 @@ fn check_proto() -> bool {
}
fn file_get_prop(name: &Utf8CStr) -> LoggedResult<String> {
let mut buf = Utf8CStrArr::default();
let mut buf = Utf8CStrBufArr::default();
let path = FsPathBuf::new(&mut buf)
.join(PERSIST_PROP_DIR!())
.join(name);
@ -93,12 +93,12 @@ fn file_get_prop(name: &Utf8CStr) -> LoggedResult<String> {
}
fn file_set_prop(name: &Utf8CStr, value: Option<&Utf8CStr>) -> LoggedResult<()> {
let mut buf = Utf8CStrArr::default();
let mut buf = Utf8CStrBufArr::default();
let path = FsPathBuf::new(&mut buf)
.join(PERSIST_PROP_DIR!())
.join(name);
if let Some(value) = value {
let mut buf = Utf8CStrArr::default();
let mut buf = Utf8CStrBufArr::default();
let mut tmp = FsPathBuf::new(&mut buf)
.join(PERSIST_PROP_DIR!())
.join("prop.XXXXXX");
@ -130,7 +130,7 @@ fn proto_read_props() -> LoggedResult<PersistentProperties> {
}
fn proto_write_props(props: &PersistentProperties) -> LoggedResult<()> {
let mut buf = Utf8CStrArr::default();
let mut buf = Utf8CStrBufArr::default();
let mut tmp = FsPathBuf::new(&mut buf).join(concat!(PERSIST_PROP!(), ".XXXXXX"));
{
let f = unsafe {