Add method to open tracee memory as File (#99)

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Add accessors for the default options applied to newly-spawned tracees
+- Add `Tracee::memory()` to support reading tracee memory as a `File`
 
 ### Changed
 

src/ptracer.rs

@@ -188,7 +188,7 @@ impl Tracee {
     pub fn read_memory_mut(&self, addr: u64, data: &mut [u8]) -> Result<usize> {
         use std::os::unix::fs::FileExt;
 
-        let mem = fs::File::open(self.proc_mem_path())?;
+        let mem = self.memory()?;
         let len = mem.read_at(data, addr)?;
         Ok(len)
     }
@@ -211,6 +211,10 @@ impl Tracee {
         format!("/proc/{}/mem", tid)
     }
 
+    pub fn memory(&self) -> Result<fs::File> {
+        Ok(fs::File::open(self.proc_mem_path())?)
+    }
+
     pub fn siginfo(&self) -> Result<Option<Siginfo>> {
         let info = if let Stop::SignalDelivery { .. } = self.stop {
             Some(ptrace::getsiginfo(self.pid).died_if_esrch(self.pid)?)