David du Colombier 8397b66aca Plan 9 from Bell Labs 2006-04-01 15 years ago
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alias b11d258a29 Plan 9 from Bell Labs 2003-09-27 17 years ago
bayes 762e8a7d44 Plan 9 from Bell Labs 2004-10-27 16 years ago
common e2476ed1b9 Plan 9 from Bell Labs 2005-05-23 16 years ago
filterkit 618f613c3a Plan 9 from Bell Labs 2006-03-31 15 years ago
fs 8397b66aca Plan 9 from Bell Labs 2006-04-01 15 years ago
marshal 8397b66aca Plan 9 from Bell Labs 2006-04-01 15 years ago
misc c0f3d9569e Plan 9 from Bell Labs 2002-12-12 18 years ago
ml bc64c38993 Plan 9 from Bell Labs 2005-07-22 16 years ago
ned 618f613c3a Plan 9 from Bell Labs 2006-03-31 15 years ago
pop3 a80a28fbc7 Plan 9 from Bell Labs 2005-05-03 16 years ago
q bc64c38993 Plan 9 from Bell Labs 2005-07-22 16 years ago
scanmail e2476ed1b9 Plan 9 from Bell Labs 2005-05-23 16 years ago
send b075dcb553 Plan 9 from Bell Labs 2006-03-30 15 years ago
smtp 618f613c3a Plan 9 from Bell Labs 2006-03-31 15 years ago
unesc a62b0e3db7 Plan 9 from Bell Labs 2004-01-26 17 years ago
vf 618f613c3a Plan 9 from Bell Labs 2006-03-31 15 years ago
README c0f3d9569e Plan 9 from Bell Labs 2002-12-12 18 years ago
mkfile 00ed3e4ad6 Plan 9 from Bell Labs 2005-10-28 15 years ago

README

Once upon a time Upas ran on many versions of Unix.
This is a partial rewrite to ANSI C specifically for Plan 9.
It uses's Plan 9's bio library instead of stdio and Plan 9's
regular expression library.

I've tried to make portability possible but it has
never been ported. To port Upas to another system:

- port Plan 9's libbio library working on that system (already available).
- port Plan 9's regexp library working on that system (should just compile).
- rewrite common/libsys.c to reflect system calls for that system. This
file contains all the really system dependent code that differs between
Plan 9 and each Unix. This includes file management, signal
handling, process control and error handling.
- change the important directory trees in common/mail.c to reflect
where you want things like
- get the ARGBEGIN/ARGEND/ARGF macros from Plan 9's libc.h
- get the include files correct in common/sys.h
- rewrite smtp/mxdial to use the conventions of that system
- rewrite runq.c to walk queues on that system.