getcwd_syscall() updates (#280)

* finished comments and tests for getcw

* removed extra whitespace

* removed extra whitespace

* removed extra whitespace

* formatted with cargofmt

* fixed a typo

* formatted

* fixed according to the review

---------

Co-authored-by: lind <lind@nyu.edu>

Author: ve1nard

benches/fs_open_close.rs

@@ -1,5 +1,5 @@
 /* Benchmarks for the microvisor implementation.  In general, I'm not doing
- * results checking / assertations to avoid adding bias to the results.  */
+ * results checking / assertations to avoid adding bias to the results. */
 
 // I hate allowing this, but this is apparently a known issue for a lot of
 // code with CStrings.  https://github.com/rust-lang/rust/issues/78691

benches/fs_read_write.rs

@@ -1,5 +1,5 @@
 /* Benchmarks for the microvisor implementation.  In general, I'm not doing
- * results checking / assertations to avoid adding bias to the results.  */
+ * results checking / assertations to avoid adding bias to the results. */
 
 use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion};
 

benches/fs_read_write_seek.rs

@@ -1,5 +1,5 @@
 /* Benchmarks for the microvisor implementation.  In general, I'm not doing
- * results checking / assertations to avoid adding bias to the results.  */
+ * results checking / assertations to avoid adding bias to the results. */
 
 use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion};
 

benches/gen_getid.rs

@@ -1,5 +1,5 @@
 /* Benchmarks for the microvisor implementation.  In general, I'm not doing
- * results checking / assertations to avoid adding bias to the results.  */
+ * results checking / assertations to avoid adding bias to the results. */
 
 use criterion::{criterion_group, criterion_main, Criterion};