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Standardize logging and error handling

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- Introduce new types: LoggedResult and LoggedError
- Introduce new extension methods to log and add additional msgs
- Never exit when logging error messages in Rust (all errors should be
  handled by using Result and Rust's error propagation)
- Remove all usages of anyhow as it doesn't fit Magisk's use cases
This commit is contained in:
topjohnwu 2023-06-29 16:44:44 -07:00
parent dbc2236dd2
commit 4ee4cbada6
16 changed files with 254 additions and 145 deletions
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9
native/src/Cargo.lock generated
View File

@ -20,12 +20,6 @@ dependencies = [
"winapi",
]
[[package]]
name = "anyhow"
version = "1.0.71"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9c7d0618f0e0b7e8ff11427422b64564d5fb0be1940354bfe2e0529b18a9d9b8"
[[package]]
name = "argh"
version = "0.1.10"
@ -75,7 +69,6 @@ checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
name = "base"
version = "0.0.0"
dependencies = [
"anyhow",
"cfg-if",
"cxx",
"cxx-gen",
@ -222,7 +215,6 @@ dependencies = [
name = "magiskboot"
version = "0.0.0"
dependencies = [
"anyhow",
"argh",
"base",
"byteorder",
@ -247,7 +239,6 @@ dependencies = [
name = "magiskpolicy"
version = "0.0.0"
dependencies = [
"anyhow",
"base",
"cxx",
"cxx-gen",

1
native/src/Cargo.toml
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@ -8,7 +8,6 @@ cxx = { path = "external/cxx-rs" }
cxx-gen = { path = "external/cxx-rs/gen/lib" }
libc = "0.2"
cfg-if = "1.0"
anyhow = "1.0"
num-traits = "0.2"
num-derive = "0.3"
thiserror = "1.0"

1
native/src/base/Cargo.toml
View File

@ -14,4 +14,3 @@ cxx = { workspace = true }
libc = { workspace = true }
cfg-if = { workspace = true }
thiserror = { workspace = true }
anyhow = { workspace = true }

9
native/src/base/cxx_extern.rs
View File

@ -1,9 +1,9 @@
// Functions listed here are just to export to C++
use std::fmt::Write;
use std::io;
use std::os::fd::{BorrowedFd, OwnedFd, RawFd};
use anyhow::Context;
use cxx::private::c_char;
use libc::mode_t;
@ -14,8 +14,7 @@ use crate::{
pub(crate) fn fd_path_for_cxx(fd: RawFd, buf: &mut [u8]) -> isize {
fd_path(fd, buf)
.context("fd_path failed")
.log()
.log_cxx_with_msg(|w| w.write_str("fd_path failed"))
.map_or(-1_isize, |v| v as isize)
}
@ -54,7 +53,7 @@ unsafe extern "C" fn frm_rf(fd: OwnedFd) -> bool {
pub(crate) fn map_file_for_cxx(path: &[u8], rw: bool) -> &'static mut [u8] {
unsafe {
map_file(Utf8CStr::from_bytes_unchecked(path), rw)
.log()
.log_cxx()
.unwrap_or(&mut [])
}
}
@ -62,7 +61,7 @@ pub(crate) fn map_file_for_cxx(path: &[u8], rw: bool) -> &'static mut [u8] {
pub(crate) fn map_fd_for_cxx(fd: RawFd, sz: usize, rw: bool) -> &'static mut [u8] {
unsafe {
map_fd(BorrowedFd::borrow_raw(fd), sz, rw)
.log()
.log_cxx()
.unwrap_or(&mut [])
}
}

2
native/src/base/lib.rs
View File

@ -20,6 +20,7 @@ mod xwrap;
pub mod ffi {
#[derive(Copy, Clone)]
pub enum LogLevel {
ErrorCxx,
Error,
Warn,
Info,
@ -32,6 +33,7 @@ pub mod ffi {
}
extern "Rust" {
#[rust_name = "log_from_cxx"]
fn log_with_rs(level: LogLevel, msg: &[u8]);
fn exit_on_error(b: bool);
fn set_log_level_state(level: LogLevel, enabled: bool);

6
native/src/base/logging.cpp
View File

@ -33,7 +33,7 @@ extern "C" int magisk_log_print(int prio, const char *tag, const char *fmt, ...)
level = LogLevel::Warn;
break;
case ANDROID_LOG_ERROR:
level = LogLevel::Error;
level = LogLevel::ErrorCxx;
break;
default:
return 0;
@ -70,9 +70,9 @@ void LOGD(const char *fmt, ...) {}
#endif
void LOGI(const char *fmt, ...) { LOG_BODY(Info) }
void LOGW(const char *fmt, ...) { LOG_BODY(Warn) }
void LOGE(const char *fmt, ...) { LOG_BODY(Error) }
void LOGE(const char *fmt, ...) { LOG_BODY(ErrorCxx) }
// Export raw symbol to fortify compat
extern "C" void __vloge(const char* fmt, va_list ap) {
fmt_and_log_with_rs(LogLevel::Error, fmt, ap);
fmt_and_log_with_rs(LogLevel::ErrorCxx, fmt, ap);
}

201
native/src/base/logging.rs
View File

@ -1,9 +1,23 @@
use std::fmt::{Arguments, Display};
use std::fmt;
use std::fmt::{Arguments, Display, Write as fWrite};
use std::io::{stderr, stdout, Write};
use std::process::exit;
use crate::ffi::LogLevel;
use crate::fmt_to_buf;
use crate::BufFormatter;
// Error handling and logging throughout the Rust codebase in Magisk:
//
// All errors should be logged and consumed as soon as possible and converted into LoggedError.
// Implement `From<ErrorType> for LoggedError` for non-standard error types so that we can
// directly use the `?` operator to propagate LoggedResult.
//
// To log an error with more information, use `ResultExt::log_with_msg()`.
//
// The "cxx" method variants in `ResultExt` are only used for C++ interop and
// should not be used directly in any Rust code.
//
// For general logging, use the <level>!(...) macros.
// Ugly hack to avoid using enum
#[allow(non_snake_case, non_upper_case_globals)]
@ -41,7 +55,7 @@ pub fn exit_on_error(b: bool) {
impl LogLevel {
fn as_disable_flag(&self) -> u32 {
match *self {
LogLevel::Error => LogFlag::DisableError,
LogLevel::Error | LogLevel::ErrorCxx => LogFlag::DisableError,
LogLevel::Warn => LogFlag::DisableWarn,
LogLevel::Info => LogFlag::DisableInfo,
LogLevel::Debug => LogFlag::DisableDebug,
@ -61,28 +75,32 @@ pub fn set_log_level_state(level: LogLevel, enabled: bool) {
}
}
pub fn log_with_rs(level: LogLevel, msg: &[u8]) {
fn do_log<F: FnOnce(fn(level: LogLevel, msg: &[u8]))>(level: LogLevel, f: F) {
let logger = unsafe { LOGGER };
if (logger.flags & level.as_disable_flag()) != 0 {
return;
}
(logger.write)(level, msg);
if level == LogLevel::Error && (logger.flags & LogFlag::ExitOnError) != 0 {
f(logger.write);
if level == LogLevel::ErrorCxx && (logger.flags & LogFlag::ExitOnError) != 0 {
exit(1);
}
}
pub fn log_impl(level: LogLevel, args: Arguments) {
let logger = unsafe { LOGGER };
if (logger.flags & level.as_disable_flag()) != 0 {
return;
}
let mut buf: [u8; 4096] = [0; 4096];
let len = fmt_to_buf(&mut buf, args);
(logger.write)(level, &buf[..len]);
if level == LogLevel::Error && (logger.flags & LogFlag::ExitOnError) != 0 {
exit(1);
}
pub fn log_from_cxx(level: LogLevel, msg: &[u8]) {
do_log(level, |write| write(level, msg));
}
pub fn log_with_formatter<F: FnOnce(&mut BufFormatter) -> fmt::Result>(level: LogLevel, f: F) {
do_log(level, |write| {
let mut buf = [0_u8; 4096];
let mut w = BufFormatter::new(&mut buf);
let len = if f(&mut w).is_ok() { w.used } else { 0 };
write(level, &buf[..len]);
});
}
pub fn log_with_args(level: LogLevel, args: Arguments) {
log_with_formatter(level, |w| w.write_fmt(args));
}
pub fn cmdline_logging() {
@ -103,44 +121,33 @@ pub fn cmdline_logging() {
}
}
#[macro_export]
macro_rules! perror {
($fmt:expr) => {
$crate::log_impl($crate::ffi::LogLevel::Error, format_args_nl!(
concat!($fmt, " failed with {}: {}"),
$crate::errno(),
$crate::error_str()
))
};
($fmt:expr, $($args:tt)*) => {
$crate::log_impl($crate::ffi::LogLevel::Error, format_args_nl!(
concat!($fmt, " failed with {}: {}"),
$($args)*,
$crate::errno(),
$crate::error_str()
))
};
}
#[macro_export]
macro_rules! error {
($($args:tt)+) => ($crate::log_impl($crate::ffi::LogLevel::Error, format_args_nl!($($args)+)))
($($args:tt)+) => {
$crate::log_with_args($crate::ffi::LogLevel::Error, format_args_nl!($($args)+))
}
}
#[macro_export]
macro_rules! warn {
($($args:tt)+) => ($crate::log_impl($crate::ffi::LogLevel::Warn, format_args_nl!($($args)+)))
($($args:tt)+) => {
$crate::log_with_args($crate::ffi::LogLevel::Warn, format_args_nl!($($args)+))
}
}
#[macro_export]
macro_rules! info {
($($args:tt)+) => ($crate::log_impl($crate::ffi::LogLevel::Info, format_args_nl!($($args)+)))
($($args:tt)+) => {
$crate::log_with_args($crate::ffi::LogLevel::Info, format_args_nl!($($args)+))
}
}
#[cfg(debug_assertions)]
#[macro_export]
macro_rules! debug {
($($args:tt)+) => ($crate::log_impl($crate::ffi::LogLevel::Debug, format_args_nl!($($args)+)))
($($args:tt)+) => {
$crate::log_with_args($crate::ffi::LogLevel::Debug, format_args_nl!($($args)+))
}
}
#[cfg(not(debug_assertions))]
@ -149,15 +156,111 @@ macro_rules! debug {
($($args:tt)+) => {};
}
pub trait ResultExt {
fn log(self) -> Self;
}
#[derive(Default)]
pub struct LoggedError {}
impl<T, E: Display> ResultExt for Result<T, E> {
fn log(self) -> Self {
if let Err(e) = &self {
error!("{:#}", e);
}
self
// Automatically handle all printable errors
impl<T: Display> From<T> for LoggedError {
fn from(e: T) -> Self {
log_with_args(LogLevel::Error, format_args_nl!("{:#}", e));
LoggedError::default()
}
}
pub type LoggedResult<T> = Result<T, LoggedError>;
#[macro_export]
macro_rules! log_err {
($msg:literal $(,)?) => {{
$crate::log_with_args($crate::ffi::LogLevel::Error, format_args_nl!($msg));
$crate::LoggedError::default()
}};
($err:expr $(,)?) => {{
$crate::log_with_args($crate::ffi::LogLevel::Error, format_args_nl!("{}", $err));
$crate::LoggedError::default()
}};
($($args:tt)+) => {{
$crate::log_with_args($crate::ffi::LogLevel::Error, format_args_nl!($($args)+));
$crate::LoggedError::default()
}};
}
pub trait ResultExt<T>
where
Self: Sized,
{
fn log(self) -> LoggedResult<T> {
self.log_impl(LogLevel::Error)
}
fn log_cxx(self) -> LoggedResult<T> {
self.log_impl(LogLevel::ErrorCxx)
}
fn log_with_msg<F: FnOnce(&mut BufFormatter) -> fmt::Result>(self, f: F) -> LoggedResult<T> {
self.log_with_msg_impl(LogLevel::Error, f)
}
fn log_cxx_with_msg<F: FnOnce(&mut BufFormatter) -> fmt::Result>(
self,
f: F,
) -> LoggedResult<T> {
self.log_with_msg_impl(LogLevel::ErrorCxx, f)
}
fn log_impl(self, level: LogLevel) -> LoggedResult<T>;
fn log_with_msg_impl<F: FnOnce(&mut BufFormatter) -> fmt::Result>(
self,
level: LogLevel,
f: F,
) -> LoggedResult<T>;
}
impl<T> ResultExt<T> for LoggedResult<T> {
fn log_impl(self, _: LogLevel) -> LoggedResult<T> {
self
}
fn log_with_msg_impl<F: FnOnce(&mut BufFormatter) -> fmt::Result>(
self,
level: LogLevel,
f: F,
) -> LoggedResult<T> {
match self {
Ok(v) => Ok(v),
Err(_) => {
log_with_formatter(level, |w| {
f(w)?;
w.write_char('\n')
});
Err(LoggedError::default())
}
}
}
}
impl<T, E: Display> ResultExt<T> for Result<T, E> {
fn log_impl(self, level: LogLevel) -> LoggedResult<T> {
match self {
Ok(v) => Ok(v),
Err(e) => {
log_with_args(level, format_args_nl!("{:#}", e));
Err(LoggedError::default())
}
}
}
fn log_with_msg_impl<F: FnOnce(&mut BufFormatter) -> fmt::Result>(
self,
level: LogLevel,
f: F,
) -> LoggedResult<T> {
match self {
Ok(v) => Ok(v),
Err(e) => {
log_with_formatter(level, |w| {
f(w)?;
writeln!(w, ": {:#}", e)
});
Err(LoggedError::default())
}
}
}
}

14
native/src/base/misc.rs
View File

@ -26,18 +26,18 @@ pub fn copy_cstr<T: AsRef<CStr> + ?Sized>(dest: &mut [u8], src: &T) -> usize {
len - 1
}
struct BufFmtWriter<'a> {
pub struct BufFormatter<'a> {
buf: &'a mut [u8],
used: usize,
pub used: usize,
}
impl<'a> BufFmtWriter<'a> {
fn new(buf: &'a mut [u8]) -> Self {
BufFmtWriter { buf, used: 0 }
impl<'a> BufFormatter<'a> {
pub fn new(buf: &'a mut [u8]) -> Self {
BufFormatter { buf, used: 0 }
}
}
impl<'a> fmt::Write for BufFmtWriter<'a> {
impl<'a> fmt::Write for BufFormatter<'a> {
// The buffer should always be null terminated
fn write_str(&mut self, s: &str) -> fmt::Result {
if self.used >= self.buf.len() - 1 {
@ -51,7 +51,7 @@ impl<'a> fmt::Write for BufFmtWriter<'a> {
}
pub fn fmt_to_buf(buf: &mut [u8], args: Arguments) -> usize {
let mut w = BufFmtWriter::new(buf);
let mut w = BufFormatter::new(buf);
if let Ok(()) = fmt::write(&mut w, args) {
w.used
} else {

41
native/src/base/xwrap.rs
View File

@ -1,24 +1,45 @@
use std::fmt::Write;
use std::os::unix::io::RawFd;
use std::ptr;
use anyhow::Context;
use libc::{
c_char, c_uint, c_ulong, c_void, dev_t, mode_t, nfds_t, off_t, pollfd, sockaddr, socklen_t,
ssize_t, SYS_dup3,
};
use crate::{cstr, errno, error, mkdirs, perror, ptr_to_str, raw_cstr, ResultExt, Utf8CStr};
use crate::{cstr, errno, mkdirs, ptr_to_str, raw_cstr, ResultExt, Utf8CStr};
macro_rules! error_cxx {
($($args:tt)+) => {
($crate::log_with_args($crate::ffi::LogLevel::ErrorCxx, format_args_nl!($($args)+)))
}
}
macro_rules! perror {
($fmt:expr) => {
$crate::log_with_formatter($crate::ffi::LogLevel::ErrorCxx, |w| {
w.write_str($fmt)?;
w.write_fmt(format_args!(" failed with {}: {}", $crate::errno(), $crate::error_str()))
})
};
($fmt:expr, $($args:tt)*) => {
$crate::log_with_formatter($crate::ffi::LogLevel::ErrorCxx, |w| {
w.write_fmt(format_args!($fmt, $($args)*))?;
w.write_fmt(format_args!(" failed with {}: {}", $crate::errno(), $crate::error_str()))
})
};
}
mod unsafe_impl {
use std::fmt::Write;
use std::os::unix::io::RawFd;
use anyhow::Context;
use cfg_if::cfg_if;
use libc::{c_char, nfds_t, off_t, pollfd};
use crate::{
perror, ptr_to_str, readlink_unsafe, realpath, slice_from_ptr, slice_from_ptr_mut,
ResultExt, Utf8CStr,
ptr_to_str, readlink_unsafe, realpath, slice_from_ptr, slice_from_ptr_mut, ResultExt,
Utf8CStr,
};
#[no_mangle]
@ -40,8 +61,7 @@ mod unsafe_impl {
unsafe extern "C" fn xrealpath(path: *const c_char, buf: *mut u8, bufsz: usize) -> isize {
match Utf8CStr::from_ptr(path) {
Ok(p) => realpath(p, slice_from_ptr_mut(buf, bufsz))
.with_context(|| format!("realpath {} failed", p))
.log()
.log_cxx_with_msg(|w| w.write_fmt(format_args!("realpath {} failed", p)))
.map_or(-1, |v| v as isize),
Err(_) => -1,
}
@ -172,7 +192,7 @@ pub fn xwrite(fd: RawFd, data: &[u8]) -> isize {
}
}
if !remain.is_empty() {
error!("write ({} != {})", write_sz, data.len())
error_cxx!("write ({} != {})", write_sz, data.len())
}
write_sz as isize
}
@ -211,7 +231,7 @@ pub fn xxread(fd: RawFd, data: &mut [u8]) -> isize {
}
}
if !remain.is_empty() {
error!("read ({} != {})", read_sz, data.len())
error_cxx!("read ({} != {})", read_sz, data.len())
}
read_sz as isize
}
@ -572,8 +592,7 @@ pub unsafe extern "C" fn xmkdir(path: *const c_char, mode: mode_t) -> i32 {
pub unsafe extern "C" fn xmkdirs(path: *const c_char, mode: mode_t) -> i32 {
match Utf8CStr::from_ptr(path) {
Ok(p) => mkdirs(p, mode)
.with_context(|| format!("mkdirs {} failed", p))
.log()
.log_cxx_with_msg(|w| w.write_fmt(format_args!("mkdirs {} failed", p)))
.map_or(-1, |_| 0),
Err(_) => -1,
}

1
native/src/boot/Cargo.toml
View File

@ -15,7 +15,6 @@ pb-rs = { workspace = true }
base = { path = "../base" }
cxx = { path = "../external/cxx-rs" }
byteorder = { workspace = true }
anyhow = { workspace = true }
size = { workspace = true }
quick-protobuf = { workspace = true }
argh = { workspace = true }

50
native/src/boot/cpio.rs
View File

@ -1,6 +1,6 @@
use std::collections::BTreeMap;
use std::ffi::CStr;
use std::fmt::{Display, Formatter};
use std::fmt::{Display, Formatter, Write as FmtWrite};
use std::fs::{metadata, read, DirBuilder, File};
use std::io::Write;
use std::mem::size_of;
@ -9,16 +9,15 @@ use std::path::Path;
use std::process::exit;
use std::slice;
use anyhow::{anyhow, Context};
use argh::{EarlyExit, FromArgs};
use size::{Base, Size, Style};
use argh::{EarlyExit, FromArgs};
use base::libc::{
c_char, dev_t, gid_t, major, makedev, minor, mknod, mode_t, uid_t, S_IFBLK, S_IFCHR, S_IFDIR,
S_IFLNK, S_IFMT, S_IFREG, S_IRGRP, S_IROTH, S_IRUSR, S_IWGRP, S_IWOTH, S_IWUSR, S_IXGRP,
S_IXOTH, S_IXUSR,
};
use base::{MappedFile, ResultExt, StrErr, Utf8CStr, WriteExt};
use base::{log_err, LoggedResult, MappedFile, ResultExt, StrErr, Utf8CStr, WriteExt};
use crate::ramdisk::MagiskCpio;
@ -217,13 +216,13 @@ impl Cpio {
}
}
fn load_from_data(data: &[u8]) -> anyhow::Result<Self> {
fn load_from_data(data: &[u8]) -> LoggedResult<Self> {
let mut cpio = Cpio::new();
let mut pos = 0usize;
while pos < data.len() {
let hdr = unsafe { &*(data.as_ptr().add(pos) as *const CpioHeader) };
if &hdr.magic != b"070701" {
return Err(anyhow!("invalid cpio magic"));
return Err(log_err!("invalid cpio magic"));
}
pos += size_of::<CpioHeader>();
let name = CStr::from_bytes_until_nul(&data[pos..])?
@ -257,13 +256,13 @@ impl Cpio {
Ok(cpio)
}
pub(crate) fn load_from_file(path: &Utf8CStr) -> anyhow::Result<Self> {
pub(crate) fn load_from_file(path: &Utf8CStr) -> LoggedResult<Self> {
eprintln!("Loading cpio: [{}]", path);
let file = MappedFile::open(path)?;
Self::load_from_data(file.as_ref())
}
fn dump(&self, path: &str) -> anyhow::Result<()> {
fn dump(&self, path: &str) -> LoggedResult<()> {
eprintln!("Dumping cpio: [{}]", path);
let mut file = File::create(path)?;
let mut pos = 0usize;
@ -324,8 +323,8 @@ impl Cpio {
}
}
fn extract_entry(&self, path: &str, out: &Path) -> anyhow::Result<()> {
let entry = self.entries.get(path).ok_or(anyhow!("No such file"))?;
fn extract_entry(&self, path: &str, out: &Path) -> LoggedResult<()> {
let entry = self.entries.get(path).ok_or(log_err!("No such file"))?;
eprintln!("Extracting entry [{}] to [{}]", path, out.to_string_lossy());
if let Some(parent) = out.parent() {
DirBuilder::new()
@ -358,13 +357,13 @@ impl Cpio {
};
}
_ => {
return Err(anyhow!("unknown entry type"));
return Err(log_err!("unknown entry type"));
}
}
Ok(())
}
fn extract(&self, path: Option<&str>, out: Option<&str>) -> anyhow::Result<()> {
fn extract(&self, path: Option<&str>, out: Option<&str>) -> LoggedResult<()> {
let path = path.map(norm_path);
let out = out.map(Path::new);
if let (Some(path), Some(out)) = (&path, &out) {
@ -384,9 +383,9 @@ impl Cpio {
self.entries.contains_key(&norm_path(path))
}
fn add(&mut self, mode: &mode_t, path: &str, file: &str) -> anyhow::Result<()> {
fn add(&mut self, mode: &mode_t, path: &str, file: &str) -> LoggedResult<()> {
if path.ends_with('/') {
return Err(anyhow!("path cannot end with / for add"));
return Err(log_err!("path cannot end with / for add"));
}
let file = Path::new(file);
let content = read(file)?;
@ -403,7 +402,7 @@ impl Cpio {
} else if metadata.file_type().is_char_device() {
mode | S_IFCHR
} else {
return Err(anyhow!("unsupported file type"));
return Err(log_err!("unsupported file type"));
}
};
self.entries.insert(
@ -451,11 +450,11 @@ impl Cpio {
eprintln!("Create symlink [{}] -> [{}]", dst, src);
}
fn mv(&mut self, from: &str, to: &str) -> anyhow::Result<()> {
fn mv(&mut self, from: &str, to: &str) -> LoggedResult<()> {
let entry = self
.entries
.remove(&norm_path(from))
.ok_or(anyhow!("no such entry {}", from))?;
.ok_or(log_err!("no such entry {}", from))?;
self.entries.insert(norm_path(to), entry);
eprintln!("Move [{}] -> [{}]", from, to);
Ok(())
@ -521,9 +520,9 @@ impl Display for CpioEntry {
}
pub fn cpio_commands(argc: i32, argv: *const *const c_char) -> bool {
fn inner(argc: i32, argv: *const *const c_char) -> anyhow::Result<()> {
fn inner(argc: i32, argv: *const *const c_char) -> LoggedResult<()> {
if argc < 1 {
return Err(anyhow!("no arguments"));
return Err(log_err!("no arguments"));
}
let cmds: Result<Vec<&Utf8CStr>, StrErr> =
@ -556,7 +555,7 @@ pub fn cpio_commands(argc: i32, argv: *const *const c_char) -> bool {
eprintln!("{}", output);
exit(0)
}
Err(_) => return Err(anyhow!(output)),
Err(_) => return Err(log_err!(output)),
},
};
match &mut cli.command {
@ -580,7 +579,7 @@ pub fn cpio_commands(argc: i32, argv: *const *const c_char) -> bool {
CpioCommands::Add(Add { mode, path, file }) => cpio.add(mode, path, file)?,
CpioCommands::Extract(Extract { paths }) => {
if !paths.is_empty() && paths.len() != 2 {
return Err(anyhow!("invalid arguments"));
return Err(log_err!("invalid arguments"));
}
cpio.extract(
paths.get(0).map(|x| x.as_str()),
@ -597,20 +596,19 @@ pub fn cpio_commands(argc: i32, argv: *const *const c_char) -> bool {
Ok(())
}
inner(argc, argv)
.context("Failed to process cpio")
.log()
.log_with_msg(|w| w.write_str("Failed to process cpio"))
.is_ok()
}
fn x8u<U: TryFrom<u32>>(x: &[u8; 8]) -> anyhow::Result<U> {
fn x8u<U: TryFrom<u32>>(x: &[u8; 8]) -> LoggedResult<U> {
// parse hex
let mut ret = 0u32;
for i in x {
let c = *i as char;
let v = c.to_digit(16).ok_or(anyhow!("bad cpio header"))?;
let v = c.to_digit(16).ok_or(log_err!("bad cpio header"))?;
ret = ret * 16 + v;
}
ret.try_into().map_err(|_| anyhow!("bad cpio header"))
ret.try_into().map_err(|_| log_err!("bad cpio header"))
}
#[inline(always)]

6
native/src/boot/patch.rs
View File

@ -1,4 +1,4 @@
use base::{MappedFile, MutBytesExt, ResultExt, Utf8CStr};
use base::{LoggedResult, MappedFile, MutBytesExt, Utf8CStr};
// SAFETY: assert(buf.len() >= 1) && assert(len <= buf.len())
macro_rules! match_patterns {
@ -102,7 +102,7 @@ fn hex2byte(hex: &[u8]) -> Vec<u8> {
}
pub fn hexpatch(file: &[u8], from: &[u8], to: &[u8]) -> bool {
fn inner(file: &[u8], from: &[u8], to: &[u8]) -> anyhow::Result<bool> {
fn inner(file: &[u8], from: &[u8], to: &[u8]) -> LoggedResult<bool> {
let file = Utf8CStr::from_bytes(file)?;
let from = Utf8CStr::from_bytes(from)?;
let to = Utf8CStr::from_bytes(to)?;
@ -118,5 +118,5 @@ pub fn hexpatch(file: &[u8], from: &[u8], to: &[u8]) -> bool {
Ok(!v.is_empty())
}
inner(file, from, to).log().unwrap_or(false)
inner(file, from, to).unwrap_or(false)
}

43
native/src/boot/payload.rs
View File

@ -1,13 +1,13 @@
use std::fmt::Write as FmtWrite;
use std::fs::File;
use std::io::{BufReader, Read, Seek, SeekFrom, Write};
use std::os::fd::{AsRawFd, FromRawFd};
use anyhow::{anyhow, Context};
use byteorder::{BigEndian, ReadBytesExt};
use quick_protobuf::{BytesReader, MessageRead};
use base::libc::c_char;
use base::{ReadSeekExt, StrErr, Utf8CStr};
use base::{error, LoggedError, LoggedResult, ReadSeekExt, StrErr, Utf8CStr};
use base::{ResultExt, WriteExt};
use crate::ffi;
@ -15,12 +15,14 @@ use crate::proto::update_metadata::mod_InstallOperation::Type;
use crate::proto::update_metadata::DeltaArchiveManifest;
macro_rules! bad_payload {
($msg:literal) => {
anyhow!(concat!("invalid payload: ", $msg))
};
($($args:tt)*) => {
anyhow!("invalid payload: {}", format_args!($($args)*))
};
($msg:literal) => {{
error!(concat!("Invalid payload: ", $msg));
LoggedError::default()
}};
($($args:tt)*) => {{
error!("Invalid payload: {}", format_args!($($args)*));
LoggedError::default()
}};
}
const PAYLOAD_MAGIC: &str = "CrAU";
@ -29,11 +31,11 @@ fn do_extract_boot_from_payload(
in_path: &Utf8CStr,
partition_name: Option<&Utf8CStr>,
out_path: Option<&Utf8CStr>,
) -> anyhow::Result<()> {
) -> LoggedResult<()> {
let mut reader = BufReader::new(if in_path == "-" {
unsafe { File::from_raw_fd(0) }
} else {
File::open(in_path).with_context(|| format!("cannot open '{in_path}'"))?
File::open(in_path).log_with_msg(|w| write!(w, "Cannot open '{}'", in_path))?
});
let buf = &mut [0u8; 4];
@ -88,13 +90,13 @@ fn do_extract_boot_from_payload(
.iter()
.find(|p| p.partition_name == "boot"),
};
boot.ok_or(anyhow!("boot partition not found"))?
boot.ok_or_else(|| bad_payload!("boot partition not found"))?
}
Some(name) => manifest
.partitions
.iter()
.find(|p| p.partition_name.as_str() == name)
.ok_or(anyhow!("partition '{name}' not found"))?,
.ok_or_else(|| bad_payload!("partition '{}' not found", name))?,
};
let out_str: String;
@ -107,7 +109,7 @@ fn do_extract_boot_from_payload(
};
let mut out_file =
File::create(out_path).with_context(|| format!("cannot write to '{out_path}'"))?;
File::create(out_path).log_with_msg(|w| write!(w, "Cannot write to '{}'", out_path))?;
// Skip the manifest signature
reader.skip(manifest_sig_len as usize)?;
@ -121,11 +123,11 @@ fn do_extract_boot_from_payload(
for operation in operations.iter() {
let data_len = operation
.data_length
.ok_or(bad_payload!("data length not found"))? as usize;
.ok_or_else(|| bad_payload!("data length not found"))? as usize;
let data_offset = operation
.data_offset
.ok_or(bad_payload!("data offset not found"))?;
.ok_or_else(|| bad_payload!("data offset not found"))?;
let data_type = operation.type_pb;
@ -141,9 +143,9 @@ fn do_extract_boot_from_payload(
let out_offset = operation
.dst_extents
.get(0)
.ok_or(bad_payload!("dst extents not found"))?
.ok_or_else(|| bad_payload!("dst extents not found"))?
.start_block
.ok_or(bad_payload!("start block not found"))?
.ok_or_else(|| bad_payload!("start block not found"))?
* block_size;
match data_type {
@ -184,7 +186,7 @@ pub fn extract_boot_from_payload(
in_path: *const c_char,
partition: *const c_char,
out_path: *const c_char,
) -> anyhow::Result<()> {
) -> LoggedResult<()> {
let in_path = unsafe { Utf8CStr::from_ptr(in_path) }?;
let partition = match unsafe { Utf8CStr::from_ptr(partition) } {
Ok(s) => Some(s),
@ -197,8 +199,7 @@ pub fn extract_boot_from_payload(
Err(e) => Err(e)?,
};
do_extract_boot_from_payload(in_path, partition, out_path)
.context("Failed to extract from payload")?;
Ok(())
.log_with_msg(|w| w.write_str("Failed to extract from payload"))
}
inner(in_path, partition, out_path).log().is_ok()
inner(in_path, partition, out_path).is_ok()
}

10
native/src/boot/ramdisk.rs
View File

@ -4,7 +4,7 @@ use std::env;
use std::str::from_utf8;
use base::libc::{S_IFDIR, S_IFMT, S_IFREG};
use base::Utf8CStr;
use base::{LoggedResult, Utf8CStr};
use crate::cpio::{Cpio, CpioEntry};
use crate::patch::{patch_encryption, patch_verity};
@ -12,8 +12,8 @@ use crate::patch::{patch_encryption, patch_verity};
pub trait MagiskCpio {
fn patch(&mut self);
fn test(&self) -> i32;
fn restore(&mut self) -> anyhow::Result<()>;
fn backup(&mut self, origin: &Utf8CStr) -> anyhow::Result<()>;
fn restore(&mut self) -> LoggedResult<()>;
fn backup(&mut self, origin: &Utf8CStr) -> LoggedResult<()>;
}
const MAGISK_PATCHED: i32 = 1 << 0;
@ -89,7 +89,7 @@ impl MagiskCpio for Cpio {
ret
}
fn restore(&mut self) -> anyhow::Result<()> {
fn restore(&mut self) -> LoggedResult<()> {
let mut backups = HashMap::<String, Box<CpioEntry>>::new();
let mut rm_list = String::new();
self.entries
@ -120,7 +120,7 @@ impl MagiskCpio for Cpio {
Ok(())
}
fn backup(&mut self, origin: &Utf8CStr) -> anyhow::Result<()> {
fn backup(&mut self, origin: &Utf8CStr) -> LoggedResult<()> {
let mut backups = HashMap::<String, Box<CpioEntry>>::new();
let mut rm_list = String::new();
backups.insert(

1
native/src/sepolicy/Cargo.toml
View File

@ -13,4 +13,3 @@ cxx-gen = { workspace = true }
[dependencies]
base = { path = "../base" }
cxx = { workspace = true }
anyhow = { workspace = true }

4
native/src/sepolicy/lib.rs
View File

@ -38,13 +38,13 @@ impl SepolicyExt for sepolicy {
}
fn load_rule_file(self: Pin<&mut sepolicy>, filename: &[u8]) {
fn inner(sepol: Pin<&mut sepolicy>, filename: &[u8]) -> anyhow::Result<()> {
fn inner(sepol: Pin<&mut sepolicy>, filename: &[u8]) -> LoggedResult<()> {
let filename = str::from_utf8(filename)?;
let mut reader = BufReader::new(File::open(filename)?);
sepol.load_rules_from_reader(&mut reader);
Ok(())
}
inner(self, filename).log().ok();
inner(self, filename).ok();
}
fn load_rules_from_reader<T: BufRead>(mut self: Pin<&mut sepolicy>, reader: &mut T) {