Re: Can't exec from a Cocoa app?
Re: Can't exec from a Cocoa app?
- Subject: Re: Can't exec from a Cocoa app?
- From: Uli Kusterer <email@hidden>
- Date: Thu, 24 Aug 2006 11:56:12 +0200
Am 24.08.2006 um 00:46 schrieb Tom Harrington:
I have an app which at some point wants to call execle(). However the
call fails, returning -1 with errno set to ENOTSUP, "Operation not
supported".
The execle() call is pointing to a valid mach-O binary (itself, as it
happens, and yeah it's the binary and not the bundle). The reason I
bring this up here is that if I copy and paste the execle() call into
a plain old C command-line app (a basic sanity check done since "man
execle" doesn't even allow that ENOTSUP can happen), it works exactly
as I'd expect. So... something about running as a Cocoa app makes
this not work? Is there something extra I need to do to make it work
from my Cocoa app?
Now, I'm wildly guessing here, but AFAIR exec and stuff like that
basically create a copy of the current application (or am I mixing
that up with fork?), where some things (like file descriptors to
stdin and stdout) may still be shared. So maybe that also applies to
a window server connection and that's why your app fails?
Cheers,
-- M. Uli Kusterer
http://www.zathras.de
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