sys/ tree re-structuring proposal

Hiten Pandya hmp at
Sun Aug 3 21:20:10 PDT 2003

Munish Chopra wrote:

On 2003-08-04 04:52 +0100, Hiten Pandya wrote:

Hi Gang. (Matt... 8-) 8-)

I would like to propose re-structuring the modules/ tree as a start. 
Currently, we just dump various directories under modules/ without any 
clear separation based on the type of source modules, etc.

I.e., it doesn't make sense to rebuild the whole modules tree when you 
only want to build, say, for arguments sake, network related modules. 
If we can restructure the modules/ sub-tree to use the following 
structure, for clarity:

	|- net/      - Network related eg. ethernet drivers, netgraph...
	|- security/ - Things like IPFilter, IPFW and CRYPTO go here...
	|- dev/      - Device Tree (sub-divided by buses)
	|   |
	|   |- pci/	  PCI and related driver build files
	|   |- isa/	  ISA and related build files
	|   |- usb/	  USB and related build files
	|   |- firewire/  IEEE-1394 and related build files
	|   |- etc...
	|- vfs/      - File systems.
	|- exec/     - Emulation and related framework build files
	|- contrib/  - Contributed modules, eg. gnufp, ext2fs, etc.
	|- misc/     - Uncategorized driver build files

This was discussed for FreeBSD too, though I'm not sure if it ever hit
the lists. Some of the problems that popped up were USB NICs (for
instance). Do they belong under net or dev/usb?
There were quite a few examples like that, and perhaps other pitfalls -
I wasn't able to stick around until the discussion had settled.
	Ofcourse, the broad category, i.e. the bus is where it goes.
	So in this case, USB NICs would go under dev/usb.  One might
	argue about things like multi-bus drivers, in which case a
	dev/multi category, or something along those lines can be

		-- Hiten (hmp at xxxxxxxx)

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