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resolved: rework link_update_dns_servers() a bit

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Let's split the code from the inner loop out, into its own function
link_update_dns_server_one(). This matches how things are already handled for
the search domain logic. Also, this is preparation for a later commit that
persists DNS server data pushed in via the bus.
This commit is contained in:
Lennart Poettering 2016-06-15 22:33:27 +02:00
parent 39f259e0b8
commit 55e99f2064
1 changed files with 22 additions and 14 deletions
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36
src/resolve/resolved-link.c
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@ -190,6 +190,27 @@ int link_update_rtnl(Link *l, sd_netlink_message *m) {
return 0;
}
static int link_update_dns_server_one(Link *l, const char *name) {
union in_addr_union a;
DnsServer *s;
int family, r;
assert(l);
assert(name);
r = in_addr_from_string_auto(name, &family, &a);
if (r < 0)
return r;
s = dns_server_find(l->dns_servers, family, &a, 0);
if (s) {
dns_server_move_back_and_unmark(s);
return 0;
}
return dns_server_new(l->manager, NULL, DNS_SERVER_LINK, l, family, &a, 0);
}
static int link_update_dns_servers(Link *l) {
_cleanup_strv_free_ char **nameservers = NULL;
char **nameserver;
@ -208,22 +229,9 @@ static int link_update_dns_servers(Link *l) {
dns_server_mark_all(l->dns_servers);
STRV_FOREACH(nameserver, nameservers) {
union in_addr_union a;
DnsServer *s;
int family;
r = in_addr_from_string_auto(*nameserver, &family, &a);
r = link_update_dns_server_one(l, *nameserver);
if (r < 0)
goto clear;
s = dns_server_find(l->dns_servers, family, &a, 0);
if (s)
dns_server_move_back_and_unmark(s);
else {
r = dns_server_new(l->manager, NULL, DNS_SERVER_LINK, l, family, &a, 0);
if (r < 0)
goto clear;
}
}
dns_server_unlink_marked(l->dns_servers);