8. Oddities

8.1 AFS

• Directories - UnixModeBits are ignored when the vnode is a directory.

• Errnos are sent over the network. Like Solaris ENOTEMPTY(93) doesn't even map to an error on sunos4 where ENOTEMPTY is 66.

• Mountpoints have the mode-bits 0644, if they don't they are symlinks (and have the mode-bits 0755).

8.2 Operating systems

• On Irix 6.5 you have to build the dirents depending on what ABI of the binary you are currently running.

• . and .. need to be first in directories, this is needed since some programs (like make) "knows" that the two first entries are . and .. and thus can be skiped.

• Reclen (in struct dirent) shouldn't be too large. When its larger then the buffer used in opendir/readdir/closedir, you loose.