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- do not dereference a null pointer.

Browse Source 
- minor sanity.

PR:		15318
This commit is contained in:
ru 1999-12-29 13:53:13 +00:00
parent 26ec75f5d2
commit 14e1e71672
1 changed files with 10 additions and 2 deletions
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12
sbin/ifconfig/ifconfig.c
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@ -609,10 +609,10 @@ ifconfig(argc, argv, afp)
}
}
if (newaddr) {
if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
if (afp->af_addreq == NULL || afp->af_aifaddr == 0) {
warnx("interface %s cannot change %s addresses!",
name, afp->af_name);
newaddr = NULL;
newaddr = 0;
}
}
if (newaddr) {
@ -636,6 +636,8 @@ setifaddr(addr, param, s, afp)
int s;
const struct afswtch *afp;
{
if (*afp->af_getaddr == NULL)
return;
/*
* Delay the ioctl to set the interface addr until flags are all set.
* The address interpretation may depend on the flags,
@ -654,6 +656,8 @@ setifnetmask(addr, dummy, s, afp)
int s;
const struct afswtch *afp;
{
if (*afp->af_getaddr == NULL)
return;
(*afp->af_getaddr)(addr, MASK);
}
@ -694,6 +698,8 @@ setifbroadaddr(addr, dummy, s, afp)
int s;
const struct afswtch *afp;
{
if (*afp->af_getaddr == NULL)
return;
(*afp->af_getaddr)(addr, DSTADDR);
}
@ -738,6 +744,8 @@ setifdstaddr(addr, param, s, afp)
int s;
const struct afswtch *afp;
{
if (*afp->af_getaddr == NULL)
return;
(*afp->af_getaddr)(addr, DSTADDR);
}