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Date: Sun, 31 Mar 2002 22:43:21 +0400 (MSD)
From: Dmitry Mottl <dima@sinp.msu.ru>
To: freebsd-questions@FreeBSD.org
Subject: ioctl question
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Hi!

I have 'Operation not permitted' when I try to get a controlling terminal
via ioctl call

#include <sys/types.h>
#include <sys/ioctl.h>
#include <libutil.h>
#include <stdio.h>
#include <unistd.h>

int main(int argc, char **argv, char **envp) {
	        int amaster, aslave;
	        char ttyname[25];
	        if(openpty(&amaster,&aslave,ttyname,NULL,NULL)) {
	                perror("Can't open pty");
	                exit(-1);
	        }
	        if (ioctl(aslave, TIOCSCTTY)==-1) { /* here I got error */
	                perror("Can't make controlling terminal");
	                exit(-1);
	        }
	        close(0);
	        close(1);
	        close(2);
	        dup(aslave);
	        dup(aslave);
	        dup(aslave);
	        execve(argv[1], argv+1, envp);
}

Thank You!



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