Correct name of each shim when erroring

Author: pvdrz

src/shims/io.rs

@@ -92,7 +92,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
         let this = self.eval_context_mut();
 
         if !this.machine.communicate {
-            throw_unsup_format!("`open` not available when isolation is enabled")
+            throw_unsup_format!("`fcntl` not available when isolation is enabled")
         }
 
         let fd = this.read_scalar(fd_op)?.to_i32()?;
@@ -125,7 +125,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
         let this = self.eval_context_mut();
 
         if !this.machine.communicate {
-            throw_unsup_format!("`open` not available when isolation is enabled")
+            throw_unsup_format!("`close` not available when isolation is enabled")
         }
 
         let fd = this.read_scalar(fd_op)?.to_i32()?;
@@ -145,7 +145,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
         let this = self.eval_context_mut();
 
         if !this.machine.communicate {
-            throw_unsup_format!("`open` not available when isolation is enabled")
+            throw_unsup_format!("`read` not available when isolation is enabled")
         }
 
         let tcx = &{ this.tcx.tcx };