sudo in c?

[Martin Klaffenboeck]

Hello,

How can I use sudo within my c programm?

I'd like to use it with popen, if possible.  If there are other ways 
that work, please tell me.

I found out:

When I use

ptr = popen ("sudo -S -v", "r+");

I simply can write the password with

fprintf(ptr, "%s\n", sudo_passwd);


but I cannot read the output from sudo via fgets() it seems that sudo 
does not write to stdout, so how can I read the output from sudo?

Or does it have a c interface somehow?

Thanks,
Martin



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