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// $Id: defaulttty.c,v 1.2 2005/01/26 15:30:40 ensc Exp $ --*- c -*--
// Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "vserver-start.h"
#include <pathconfig.h>
#include <lib_internal/string.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#define ENSC_WRAPPERS_UNISTD 1
#define ENSC_WRAPPERS_FCNTL 1
#include <wrappers.h>
inline static bool
checkTTY(char const /*@null@*/ *p)
{
return p!=0 && access(p, R_OK|W_OK)==0;
}
void
setDefaultTTY(PathInfo const *cfgdir, char const *dflt)
{
PathInfo subpath = ENSC_STRING_FIXED("/apps/init/tty");
char buf[ENSC_PI_APPSZ(*cfgdir, subpath)];
char const * new_tty = 0;
do {
PathInfo ttypath = *cfgdir;
PathInfo_append(&ttypath, &subpath, buf);
new_tty = String_c_str(&ttypath, buf);
if (checkTTY(new_tty)) break;
new_tty = CONFDIR "/.defaults/apps/init/tty";
if (checkTTY(new_tty)) break;
new_tty = dflt;
if (checkTTY(new_tty)) break;
new_tty = "/dev/null";
} while (false);
int fd_in = Eopen(new_tty, O_RDONLY, 0);
if (fd_in!=0) {
Edup2(fd_in, 0);
Eclose(fd_in);
}
int fd_out = Eopen(new_tty, O_WRONLY, 0600);
if (fd_out!=1) {
Edup2(fd_out, 1);
Eclose(fd_out);
}
Edup2(1, 2);
}
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