The MINIX filesystem supports filenames of 60 characters (and allocates all 60 characters in the directory file, whether they are used or not). In light of this fact, explain why the ‘rename’ system...

The MINIX filesystem supports filenames of 60 characters (and allocates all 60 characters in the directory file, whether they are used or not). In light of this fact, explain why the ‘rename’ system call was not simply implemented by changing the filename in place in the directory file.