Revert "Fix testcase set_filename (#1092)" (#1175)

This reverts commit a659dd821c484c4e0524d0a2bf88023dae5e259b.

libafl/src/corpus/inmemory_ondisk.rs

@@ -221,6 +221,7 @@ where
             let mut ctr = 2;
             let filename = loop {
                 let lockfile = format!(".{file}.lafl_lock");
+                // try to create lockfile.
 
                 if OpenOptions::new()
                     .write(true)
@@ -228,18 +229,15 @@ where
                     .open(self.dir_path.join(lockfile))
                     .is_ok()
                 {
-                    break file;
+                    break self.dir_path.join(file);
                 }
 
                 file = format!("{file_orig}-{ctr}");
                 ctr += 1;
             };
 
-            let file_path = self.dir_path.join(filename.clone());
+            let filename_str = filename.to_str().expect("Invalid Path");
-            let filename_str = file_path.to_str().expect("Invalid Path");
+            testcase.set_filename(filename_str.into());
-            testcase.set_filename(filename_str.into())?;
-
-            fs::remove_file(format!(".{filename}.lafl_lock"))?;
         };
         if self.meta_format.is_some() {
             let mut filename = PathBuf::from(testcase.filename().as_ref().unwrap());

libafl/src/corpus/testcase.rs

@@ -8,8 +8,6 @@ use core::{
     option::Option,
     time::Duration,
 };
-#[cfg(feature = "std")]
-use std::fs;
 
 use serde::{Deserialize, Serialize};
 
@@ -146,53 +144,8 @@ where
 
     /// Set the filename
     #[inline]
-    #[cfg(feature = "std")]
+    pub fn set_filename(&mut self, filename: String) {
-    pub fn set_filename(&mut self, filename: String) -> Result<(), Error> {
-        use std::fs::OpenOptions;
-
-        if self.filename.is_some() {
-            let f = self.filename.clone().unwrap();
-            let old_filename = f.as_str();
-
-            let new_filename = filename.as_str();
-
-            // Do operations below when new filename is specified
-            if old_filename.eq(new_filename) {
-                return Ok(());
-            }
-
-            let new_lock_filename = format!(".{new_filename}.lafl_lock");
-
-            // Try to create lock file for new testcases
-            if OpenOptions::new()
-                .create(true)
-                .write(true)
-                .open(&new_lock_filename)
-                .is_err()
-            {
-                return Err(Error::illegal_state(
-                    "unable to create lock file for new testcase",
-                ));
-            }
-
-            fs::rename(old_filename, new_filename)?;
-
-            let old_metadata_filename = format!(".{old_filename}.metadata");
-            let new_metadata_filename = format!(".{new_filename}.metadata");
-            fs::rename(old_metadata_filename, new_metadata_filename)?;
-
-            fs::remove_file(&new_lock_filename)?;
-        }
-
         self.filename = Some(filename);
-        Ok(())
-    }
-
-    #[inline]
-    #[cfg(feature = "no_std")]
-    pub fn set_filename(&mut self, filename: String) -> Result<(), Error> {
-        self.filename = Some(filename);
-        Ok(())
     }
 
     /// Get the execution time of the testcase