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isdn4k-utils
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detect kernel < 2.0.36; warn if dialmode is accessed with older kernels

This commit is contained in:
paul 1998-11-24 18:18:57 +00:00
parent d8f38f288c
commit 287c92d045
1 changed files with 22 additions and 2 deletions
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24
isdnctrl/isdnctrl.c
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@ -1,4 +1,4 @@
/* $Id: isdnctrl.c,v 1.30 1998/11/18 13:20:07 fritz Exp $
/* $Id: isdnctrl.c,v 1.31 1998/11/24 18:18:57 paul Exp $
* ISDN driver for Linux. (Control-Utility)
*
* Copyright 1994,95 by Fritz Elfert (fritz@wuemaus.franken.de)
@ -21,6 +21,9 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Log: isdnctrl.c,v $
* Revision 1.31 1998/11/24 18:18:57 paul
* detect kernel < 2.0.36; warn if dialmode is accessed with older kernels
*
* Revision 1.30 1998/11/18 13:20:07 fritz
* Fixed display of dialmode.
*
@ -408,6 +411,7 @@ static void listif(int isdnctrl, char *name, int errexit)
char nn[1024];
memset(&cfg, 0, sizeof cfg); /* clear in case of older kernel */
cfg.dialmode = 0xDEADBEEF;
strcpy(cfg.name, name);
if (ioctl(isdnctrl, IIOCNETGCF, &cfg) < 0) {
if (errexit) {
@ -446,8 +450,12 @@ static void listif(int isdnctrl, char *name, int errexit)
puts("off");
else if (cfg.dialmode == ISDN_NET_DM_AUTO)
puts("auto");
else
else if (cfg.dialmode == ISDN_NET_DM_MANUAL)
puts("manual");
else if (cfg.dialmode == 0xDEADBEEF)
puts("not in kernel (please upgrade your kernel)");
else
printf("unknown value (0x%x)\n", cfg.dialmode);
#else
#warning ISDN_NET_DM_OFF not defined? Old isdn4kernel?
printf("Dial mode: not available at compilation\n");
@ -532,6 +540,8 @@ do_dialmode(int args, int dialmode, int fd, char *id, int errexit)
{
isdn_net_ioctl_cfg cfg;
memset(&cfg, 0, sizeof cfg); /* clear in case of older kernel */
cfg.dialmode = 0xDEADBEEF;
/* first get settings */
strcpy(cfg.name, id);
if (ioctl(fd, IIOCNETGCF, &cfg) < 0) {
@ -540,6 +550,16 @@ do_dialmode(int args, int dialmode, int fd, char *id, int errexit)
perror(id);
exit(-1);
}
if (cfg.dialmode == 0xDEADBEEF) {
fputs("dialmode setting not in kernel\n", stderr);
/*
* exit true if setting "auto"
* I want to be able to "isdnctrl dialmode if auto" without
* error if kernel has no dialmode, as then the behaviour is
* equivalent to "auto".
*/
exit((args == 2 && dialmode == ISDN_NET_DM_AUTO) ? 0 : -1);
}
/* hack for following a chain of interfaces */
if (cfg.slave && *cfg.slave) {
strncpy(nextslaveif, cfg.slave, 9);