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Fix regression introduced in rev. 173124:

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0.0.0.0/1 is not the same as 0.0.0.0/0.

MFC after:	1 month
This commit is contained in:
Alexander Motin 2009-01-18 11:38:35 +00:00
parent fcf1ff110a
commit b814ca8a4f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=187384
1 changed files with 27 additions and 26 deletions
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53
sbin/route/route.c
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@ -791,33 +791,34 @@ inet_makenetandmask(net, sin, bits)
char *cp;
rtm_addrs |= RTA_NETMASK;
if (net == 0)
mask = addr = 0;
else {
if (net <= 0xff)
addr = net << IN_CLASSA_NSHIFT;
else if (net <= 0xffff)
addr = net << IN_CLASSB_NSHIFT;
else if (net <= 0xffffff)
addr = net << IN_CLASSC_NSHIFT;
else
addr = net;
/*
* XXX: This approach unable to handle 0.0.0.1/32 correctly
* as inet_network() converts 0.0.0.1 and 1 equally.
*/
if (net <= 0xff)
addr = net << IN_CLASSA_NSHIFT;
else if (net <= 0xffff)
addr = net << IN_CLASSB_NSHIFT;
else if (net <= 0xffffff)
addr = net << IN_CLASSC_NSHIFT;
else
addr = net;
if (bits != 0)
mask = 0xffffffff << (32 - bits);
else if (net == 0)
mask = 0;
else if (IN_CLASSA(addr))
mask = IN_CLASSA_NET;
else if (IN_CLASSB(addr))
mask = IN_CLASSB_NET;
else if (IN_CLASSC(addr))
mask = IN_CLASSC_NET;
else if (IN_MULTICAST(addr))
mask = IN_CLASSD_NET;
else
mask = 0xffffffff;
if (bits != 0)
mask = 0xffffffff << (32 - bits);
else {
if (IN_CLASSA(addr))
mask = IN_CLASSA_NET;
else if (IN_CLASSB(addr))
mask = IN_CLASSB_NET;
else if (IN_CLASSC(addr))
mask = IN_CLASSC_NET;
else if (IN_MULTICAST(addr))
mask = IN_CLASSD_NET;
else
mask = 0xffffffff;
}
}
sin->sin_addr.s_addr = htonl(addr);
sin = &so_mask.sin;
sin->sin_addr.s_addr = htonl(mask);