[cs631apue] hw2 questions

[afonsec1]

Professor,

1. I do check for invalid file inputs (symbolic links, source file that 
doesn't exist, permission rights, null ptr, etc), but do you want error 
messages... my code just ignore invalid files or directory.

2. The source file could be a directory? so the content of source 
directory is can be copy to another directory?

3. If the destination file already exists, do you want to append or 
truncate it?

4. The first argument is always a regular file?

5. For the xtra credit one, I did use mmap and memcpy, but I also used 
lseek and write just to expand the destination mmap, is that okay?

6. Are you timing the program's speed?

Thanks,
Armando.