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When comparing DNS server configs, also compare number of servers

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Bug: 16070602
Change-Id: I605f1cca50b08479ebcad290b3bd179f59be8a96
This commit is contained in:
Lorenzo Colitti 2014-09-08 18:09:43 +09:00
parent d0cce14364
commit bce18c9163
1 changed files with 16 additions and 1 deletions
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17
libc/dns/resolv/res_cache.c
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@ -1965,10 +1965,25 @@ _resolv_is_nameservers_equal_locked(struct resolv_cache_info* cache_info,
{
int i;
char** ns;
int currentservers;
int equal = 1;
// compare each name server against current name servers
if (numservers > MAXNS) numservers = MAXNS;
// Find out how many nameservers we had before.
currentservers = 0;
for (ns = cache_info->nameservers; *ns; ns++)
currentservers++;
if (currentservers != numservers)
return 0;
// Compare each name server against current name servers.
// TODO: this is incorrect if the list of current or previous nameservers
// contains duplicates. This does not really matter because the framework
// filters out duplicates, but we should probably fix it. It's also
// insensitive to the order of the nameservers; we should probably fix that
// too.
for (i = 0; i < numservers && equal; i++) {
ns = cache_info->nameservers;
equal = 0;