mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-27 11:55:06 +00:00
de5663609e
James da Silva. We need to integrate this before 1.1.5 so that we can actually make the boot floppies.
89 lines
3.6 KiB
Plaintext
89 lines
3.6 KiB
Plaintext
|
|
CRUNCH 0.2 README 6/14/94
|
|
|
|
Crunch is available via anonymous ftp to ftp.cs.umd.edu in
|
|
pub/bsd/crunch-0.2.tar.gz
|
|
|
|
|
|
WHAT'S NEW IN 0.2
|
|
|
|
* The prototype awk script has been replaced by a more capable and
|
|
hopefully more robust C program.
|
|
* No fragile template makefiles or dependencies on the details of the
|
|
bsd build environment.
|
|
* You can build crunched binaries even with no sources on-line, you
|
|
just need the .o files. Crunchgen still will try to figure out as
|
|
much as possible on its own, but you can override its guessing by
|
|
specifying the list of .o files explicitly.
|
|
* Crunch itself has been bmake'd and some man pages written, so it
|
|
should be ready to install.
|
|
|
|
|
|
INTRODUCTION
|
|
|
|
Crunch is a little package that helps create "crunched" binaries for use
|
|
on boot, install, and fixit floppies. A crunched binary in this case is
|
|
one where many programs have been linked together into one a.out file.
|
|
The different programs are run depending on the value of argv[0], so
|
|
hard links to the crunched binary suffice to simulate a perfectly normal
|
|
system.
|
|
|
|
As an example, I have created an 980K crunched "fixit" binary containing
|
|
the following programs in their entirety:
|
|
|
|
cat chmod cp date dd df echo ed expr hostname kill ln ls mkdir
|
|
mt mv pwd rcp rm rmdir sh sleep stty sync test [ badsect chown
|
|
clri disklabel dump rdump dmesg fdisk fsck halt ifconfig init
|
|
mknod mount newfs ping reboot restore rrestore swapon umount
|
|
ftp rsh sed telnet rlogin vi cpio gzip gunzip gzcat
|
|
|
|
Note carefully: vi, cpio, gzip, ed, sed, dump/restore, some networking
|
|
utilities, and the disk management utilities, all in a binary small
|
|
enough to fit on a 1.2 MB root filesystem floppy (albeit with the kernel
|
|
on its own boot floppy). A more reasonable subset can be made to fit
|
|
easily with a kernel for a decent one-disk fixit filesystem.
|
|
|
|
The linking together of different programs by hand is an old
|
|
space-saving technique. Crunch automates the process by building the
|
|
necessary stub files and makefile for you (via the crunchgen program),
|
|
and by doctoring the symbol tables of the component .o files to allow
|
|
them to link without "symbol multiply defined" conflicts (via the
|
|
crunchide program).
|
|
|
|
|
|
BUILDING CRUNCH
|
|
|
|
Just type make, then make install.
|
|
|
|
Crunch was written and tested under NetBSD/i386, but should work under
|
|
other PC BSD systems that use GNU ld.
|
|
|
|
The crunchgen(1) and crunchide(1) man pages have more details on using
|
|
crunch, and the examples subdirectory contains some working .conf files
|
|
and a sample Makefile.
|
|
|
|
CREDITS
|
|
|
|
Thanks to the NetBSD team for a consistently high quality effort in
|
|
bringing together a solid, state of the art development environment.
|
|
|
|
Thanks to the FreeBSD guys; Rod Grimes, Nate Williams and Jordan
|
|
Hubbard; and to Bruce Evans, for immediate and detailed feedback on
|
|
crunch 0.1, and for pressing me to make the prototype more useable.
|
|
|
|
Crunch was written for the Maruti Hard Real-Time Operating System
|
|
project at the University of Maryland, to help make for better install
|
|
and recovery procedures for our NetBSD-based development environment. It
|
|
is copyright (c) 1994 by the University of Maryland under a UCB-style
|
|
freely- redistributable notice. See the file COPYRIGHT for details.
|
|
|
|
Please let me know of any problems or of enhancements you make to this
|
|
package. I'm particularly interested in the details of what you found
|
|
was good to put on your fixit or install disks. Thanks!
|
|
|
|
Share and Enjoy,
|
|
Jaime
|
|
............................................................................
|
|
: Stand on my shoulders, : jds@cs.umd.edu : James da Silva
|
|
: not on my toes. : uunet!mimsy!jds : http://www.cs.umd.edu/users/jds
|