1 | //--------------------------------------------------------------------------- |
2 | // |
3 | // kPPP: A pppd front end for the KDE project |
4 | // |
5 | //--------------------------------------------------------------------------- |
6 | // |
7 | // (c) 1997-1998 Bernd Johannes Wuebben <wuebben@kde.org> |
8 | // (c) 1997-1999 Mario Weilguni <mweilguni@kde.org> |
9 | // (c) 1998-1999 Harri Porten <porten@kde.org> |
10 | // |
11 | // derived from Jay Painters "ezppp" |
12 | // |
13 | //--------------------------------------------------------------------------- |
14 | // |
15 | // $Id$ |
16 | // |
17 | //--------------------------------------------------------------------------- |
18 | // |
19 | // This program is free software; you can redistribute it and-or |
20 | // modify it under the terms of the GNU Library General Public |
21 | // License as published by the Free Software Foundation; either |
22 | // version 2 of the License, or (at your option) any later version. |
23 | // |
24 | // This program is distributed in the hope that it will be useful, |
25 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
26 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
27 | // Library General Public License for more details. |
28 | // |
29 | // You should have received a copy of the GNU Library General Public |
30 | // License along with this program; if not, write to the Free |
31 | // Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
32 | // |
33 | //--------------------------------------------------------------------------- |
34 | |
35 | #include <sys/types.h> |
36 | #include <sys/stat.h> |
37 | |
38 | #include <unistd.h> |
39 | #include <stdio.h> |
40 | #include <limits.h> |
41 | |
42 | #include "utils.h" |
43 | #include "kpppconfig.h" |
44 | |
45 | // in case of error, we simply return "0" and hope it's ok :-) |
46 | int pppInterfaceNumber() { |
47 | char ifname[PATH_MAX]; |
48 | |
49 | for(int i = 0; i < 8; i++) { |
50 | snprintf(ifname, sizeof(ifname), "%s/ppp%d.pid" , PPP_PID_DIR, i); |
51 | if(access(ifname, F_OK) == -1) |
52 | return i; |
53 | } |
54 | |
55 | // panic |
56 | fprintf(stderr, "pppInterfaceNumber: cannot detect ppp interface number!\n" ); |
57 | return 0; |
58 | } |
59 | |
60 | |