libbinder_rs: Switch dump() argument type to Write trait
Generalize the first argument of Interface::dump() to take
any type implementing the Write trait instead of a std::fs::File.
Bug: 242243245
Test: atest aidl_integration_test
Merged-In: Iabd7ce5e424011488f16be219f5e7276c4ed19ba
Change-Id: Iabd7ce5e424011488f16be219f5e7276c4ed19ba
diff --git a/libs/binder/rust/src/binder.rs b/libs/binder/rust/src/binder.rs
index 78f8877..6d122c5 100644
--- a/libs/binder/rust/src/binder.rs
+++ b/libs/binder/rust/src/binder.rs
@@ -27,7 +27,7 @@
use std::convert::TryFrom;
use std::ffi::{c_void, CStr, CString};
use std::fmt;
-use std::fs::File;
+use std::io::Write;
use std::marker::PhantomData;
use std::ops::Deref;
use std::os::raw::c_char;
@@ -62,7 +62,7 @@
///
/// This handler is a no-op by default and should be implemented for each
/// Binder service struct that wishes to respond to dump transactions.
- fn dump(&self, _file: &File, _args: &[&CStr]) -> Result<()> {
+ fn dump(&self, _writer: &mut dyn Write, _args: &[&CStr]) -> Result<()> {
Ok(())
}
}
@@ -165,7 +165,7 @@
/// Handle a request to invoke the dump transaction on this
/// object.
- fn on_dump(&self, file: &File, args: &[&CStr]) -> Result<()>;
+ fn on_dump(&self, file: &mut dyn Write, args: &[&CStr]) -> Result<()>;
/// Retrieve the class of this remote object.
///
@@ -934,8 +934,8 @@
}
}
- fn on_dump(&self, file: &std::fs::File, args: &[&std::ffi::CStr]) -> std::result::Result<(), $crate::StatusCode> {
- self.0.dump(file, args)
+ fn on_dump(&self, writer: &mut dyn std::io::Write, args: &[&std::ffi::CStr]) -> std::result::Result<(), $crate::StatusCode> {
+ self.0.dump(writer, args)
}
fn get_class() -> $crate::binder_impl::InterfaceClass {
diff --git a/libs/binder/rust/src/native.rs b/libs/binder/rust/src/native.rs
index b248f5e..b250012 100644
--- a/libs/binder/rust/src/native.rs
+++ b/libs/binder/rust/src/native.rs
@@ -25,6 +25,7 @@
use std::convert::TryFrom;
use std::ffi::{c_void, CStr, CString};
use std::fs::File;
+use std::io::Write;
use std::mem::ManuallyDrop;
use std::ops::Deref;
use std::os::raw::c_char;
@@ -341,7 +342,7 @@
}
// Safety: Our caller promised that fd is a file descriptor. We don't
// own this file descriptor, so we need to be careful not to drop it.
- let file = unsafe { ManuallyDrop::new(File::from_raw_fd(fd)) };
+ let mut file = unsafe { ManuallyDrop::new(File::from_raw_fd(fd)) };
if args.is_null() && num_args != 0 {
return StatusCode::UNEXPECTED_NULL as status_t;
@@ -366,7 +367,7 @@
// Safety: Our caller promised that the binder has a `T` pointer in its
// user data.
let binder: &T = unsafe { &*(object as *const T) };
- let res = binder.on_dump(&file, &args);
+ let res = binder.on_dump(&mut *file, &args);
match res {
Ok(()) => 0,
@@ -569,7 +570,7 @@
Ok(())
}
- fn on_dump(&self, _file: &File, _args: &[&CStr]) -> Result<()> {
+ fn on_dump(&self, _writer: &mut dyn Write, _args: &[&CStr]) -> Result<()> {
Ok(())
}
diff --git a/libs/binder/rust/tests/integration.rs b/libs/binder/rust/tests/integration.rs
index c049b80..c87fa89 100644
--- a/libs/binder/rust/tests/integration.rs
+++ b/libs/binder/rust/tests/integration.rs
@@ -26,7 +26,7 @@
use std::convert::{TryFrom, TryInto};
use std::ffi::CStr;
-use std::fs::File;
+use std::io::Write;
use std::sync::Mutex;
/// Name of service runner.
@@ -118,7 +118,7 @@
}
impl Interface for TestService {
- fn dump(&self, _file: &File, args: &[&CStr]) -> Result<(), StatusCode> {
+ fn dump(&self, _writer: &mut dyn Write, args: &[&CStr]) -> Result<(), StatusCode> {
let mut dump_args = self.dump_args.lock().unwrap();
dump_args.extend(args.iter().map(|s| s.to_str().unwrap().to_owned()));
Ok(())