[9fans] exec crashing

[9fans] exec crashing

[Burton Samograd]

I'm trying to add a restart feature to my modified rio by calling exec on a
saved argv[0] and copy of argv that has been null terminated, but it crashes
every time.  Is there something  about exec on plan9 that I should be aware
of that's different than unix?

--
Burton Samograd

Re: [9fans] exec crashing

[erik quanstrom]

On Thu May 24 23:03:19 EDT 2012, burton.samograd@gmail.com wrote:
> I'm trying to add a restart feature to my modified rio by calling exec on a
> saved argv[0] and copy of argv that has been null terminated, but it crashes
> every time.  Is there something  about exec on plan9 that I should be aware
> of that's different than unix?

no, there's not.  however, rio is a thread-library program and you can't just
exec() out without confusing other processes you're sharing memory with.

rio already has a hook where it will provide an Exit menu option if ".out"
appears somewhere in argv[0].  so, you could have an rc script named rio,
and rename rio to rio.out.  the rc script would just need to read something
like

	#!/bin/rc
	while()
		rio.out $*

- erik