Only things defined with this keyword will be allowed on "file-system"
lines in the kernel config files.
By default, -D... directives for file systems are not generated, since
they are not needed for most file systems now that vfs_conf.c is gone.
However, some file systems must have dependencies generated on them
(e.g. NFS, UNION). So, provide a way to specify an option file for
these file systems.
a change to the config grammar, to specify a device's class (i.e. DV_xxx)
like:
device sd class disk: ...
Also emit an ioconf.h, which contains extern declarations of the
cfdriver structures.
While I'm here, add support for specifying multiple options per defopt
line, as well as specifying the file name in which the options will
appear.
defopt foo bar baz
generates "opt_foo.h", "opt_bar.h", and "opt_baz.h"
defopt opt_mumble.h foo bar baz
generates "opt_mumble.h" which contains all three options.
Also, clean up and fix some bugs in the code that generates header files.
Syntax is like the `file' keyword; e.g.:
object arch/i386/i386/mumble.o [mumble] [needs-flag]
Largely from Michael Richardson in PR 3833, with some changes by me.
reported in PR #3668 from maximum entropy <entropy@tanstaafl.bernstein.com>.
The problem: The unit number is not being conveyed to the configuration
crosscheck with root is a network interface; the device number is set
to NODEV, which sets up the (correct) defaults for swap/dump devices.
We can't change NODEV to a unit number, as the PR's patch suggests, as
this breaks the swap/dump defaults. Rewriting that code is not really
justified, since it's soon to be obsoleted.
The kludge: add an "nv_ifunit" member to struct nvlist, which convey's
a network interface's unit number to the crosscheck routine. It's not
pretty, but it's not terribly invasive, and can be garbage-collected
easily when the swap/dump goo is obsoleted.
be included in object dependencies. config(8) is told to generate
a header for a particular option with the new "defopt" keyword, used
in the files.* system description files. Options that are placed in
header files are not given -D... cpp flags.
This approach allows options to be turned into headers incrementally,
rather than all at once, and allows for non-header options, as well.
and the root device:
- New "file-system" keyword is used to configure file systems into
the kernel.
- New way of specifying root device, which allows root file system
type to always be specified. Examples:
config gennetbsd swap generic
config sdnetbsd root on sd0a swap on sd0b
config nfsnetbsd root on nfs
are replaced by:
config gennetbsd root on ? type ?
config sdnetbsd root on sd0a type ffs swap on sd0b
config nfsnetbsd root on ? type nfs
config lenetbsd root on le0 type nfs
Note that specific network interfaces may now be specified as
the root device.
- swapgeneric.c is no longer used; generate a swap*.c file for each
"config" line in the kernel configuration file.
on tech-kern. (See man page.) Implementation by Greg Hudson.
Also, remove special case for i386 in vector handling, although this code isn't
actually used any more.
- split softc size and match/attach out from cfdriver into
a new struct cfattach.
- new "attach" directive for files.*. May specify the name of
the cfattach structure, so that devices may be easily attached
to parents with different autoconfiguration semantics.
is different than the "machinename" internal variable, read
machinearch's files.${machinearch} and add it to the list of files
for the machine. Also, regardless of whether or not they're different,
create a ${machinearch} sylink (or directory) pointing to the machinearch
include files (or containing them).
wouldn't". this is overridden by (and is a subset of "device-driver".
if you have a "standard" file, you can also do: "standard foo needs-count"
to get a foo.h file. (for the hp300 stuff)
and files.kernel has now been completely replaced.
features supported: not nearly as broken as the stuff before
expression support for dependencies
support for 'requires'
no longer generates lots of stupid unnecessary .h files
broke lots of broken stuff, and forced fixing it.
(docs to arrive later)
added '-k' option for continue even after error
documented '-g'
thorpej