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added ccp_late_error; use PPPIOCSNPMODE ioctl; moved ppp_available

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This commit is contained in:
Paul Mackerras 1994-09-16 02:17:43 +00:00
parent 71bc80a3a5
commit 410f5ff465
1 changed files with 77 additions and 38 deletions
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85
pppd/sys-bsd.c
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@ -19,7 +19,7 @@
*/
#ifndef lint
static char rcsid[] = "$Id: sys-bsd.c,v 1.10 1994/09/01 00:36:39 paulus Exp $";
static char rcsid[] = "$Id: sys-bsd.c,v 1.11 1994/09/16 02:17:43 paulus Exp $";
#endif
/*
@ -79,6 +79,26 @@ note_debug_level()
}
}
/*
* ppp_available - check whether the system has any ppp interfaces
* (in fact we check whether we can do an ioctl on ppp0).
*/
int
ppp_available()
{
int s, ok;
struct ifreq ifr;
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
return 1; /* can't tell - maybe we're not root */
strncpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
close(s);
return ok;
}
/*
* establish_ppp - Turn the serial port into a ppp interface.
*/
@ -405,7 +425,7 @@ ccp_test(unit, opt_ptr, opt_len, for_transmit)
int unit, opt_len, for_transmit;
u_char *opt_ptr;
{
struct ppp_comp_data data;
struct ppp_option_data data;
data.ptr = opt_ptr;
data.length = opt_len;
@ -432,6 +452,24 @@ ccp_flags_set(unit, isopen, isup)
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
}
/*
* ccp_fatal_error - returns 1 if decompression was disabled as a
* result of an error detected after decompression of a packet,
* 0 otherwise. This is necessary because of patent nonsense.
*/
int
ccp_fatal_error(unit)
int unit;
{
int x;
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
return 0;
}
return x & SC_DC_FERROR;
}
/*
* sifvjcomp - config tcp header compression
*/
@ -467,6 +505,7 @@ sifup(u)
{
struct ifreq ifr;
u_int x;
struct npioctl npi;
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
@ -478,6 +517,14 @@ sifup(u)
syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
return 0;
}
npi.protocol = PPP_IP;
npi.mode = NPMODE_PASS;
if (ioctl(fd, PPPIOCSNPMODE, &npi) < 0) {
if (errno != ENOTTY) {
syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
return 0;
}
/* for backwards compatibility */
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
return 0;
@ -487,6 +534,7 @@ sifup(u)
syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
return 0;
}
}
return 1;
}
@ -500,8 +548,17 @@ sifdown(u)
struct ifreq ifr;
u_int x;
int rv;
struct npioctl npi;
rv = 1;
npi.protocol = PPP_IP;
npi.mode = NPMODE_ERROR;
if (ioctl(fd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) {
if (errno != ENOTTY) {
syslog(LOG_ERR, "ioctl(PPPIOCSNPMODE): %m");
rv = 0;
} else {
/* backwards compatibility */
if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
rv = 0;
@ -512,6 +569,9 @@ sifdown(u)
rv = 0;
}
}
}
}
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
@ -895,24 +955,3 @@ get_ether_addr(ipaddr, hwaddr)
return 0;
}
/*
* ppp_available - check whether the system has any ppp interfaces
* (in fact we check whether we can do an ioctl on ppp0).
*/
int
ppp_available()
{
int s, ok;
struct ifreq ifr;
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
return 1; /* can't tell - maybe we're not root */
strncpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
close(s);
return ok;
}