Older blog entries for cmc (starting at number 1)

I've changed the design of fdesc to be mounted on /dev/fd instead of being a union mount on /dev. Since we already have the nodes that fdesc duplicates (std{in,out,err} and tty), there's no reason to bloat and complicate the code by reproducing them. The code itself looks clean, but there's still the issue of making a unique inode number for each file. This puts the code in a generally much more readable state as well.

Since I have not really made any journal entries, I believe I should go ahead and describe what my current project is. At this point, I am working on repairing FreeBSD's fdesc file system.

What is fdesc? Fdesc is a file system which basically gives you information in file system form about what files (i.e. sockets, pipes, etc.) you have open. Since devfs likely won't be available for a while, I decided I'd make this something to work on. Currently the FS data such as the date, owner and permissions in fdesc ``as-is'' is set inaccurately (or to zero).

Currently, FreeBSD uses a directory, /dev/fd, which is basically full of a bunch of device nodes that really tell you absolutely nothing about your open files. However, with what magic I'm working with at this point:

$ ls -l /dev/fd 3>/dev/tcp/ | tee /dev/null
total 0
crw-------  1 chris  tty      5,   3 Mar 29 06:14 0
prw-rw-rw-  1 chris  chris         0 Mar 29 06:14 1
crw-------  1 chris  tty      5,   3 Mar 29 06:14 2
srw-rw-rw-  1 chris  chris         0 Mar 29 06:14 3
dr--r--r--  2 root   wheel       512 Mar 27 06:03 4
dr--r--r--  2 root   wheel       512 Mar 27 06:03 5

Note: The /dev/tcp/addr/port-no is a feature of the Korn shell and is in no way related to my fdesc work (other than being an awfully convenient way to make a socket in the shell).

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