diff options
| author | Tim Hockin <thockin@google.com> | 2016-03-09 22:12:23 +0100 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2016-03-10 21:50:25 +0100 |
| commit | 8c85b44f6ab42561207365f19b9d1fd69d960771 (patch) | |
| tree | bbdf13106ea6564eeb4cce008f436cb962cd44f9 /libc/inet/resolv.c | |
| parent | 2ac8348609b63d6f3a87cb27ce17deff889c6a73 (diff) | |
DNS: Don't apply search domains to PTR lookups
This lessens the load on upstream DNS servers (and it was just nonsensical).
Signed-off-by: Tim Hockin <thockin@google.com>
Diffstat (limited to 'libc/inet/resolv.c')
| -rw-r--r-- | libc/inet/resolv.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c index e676f5371..f378c9b9d 100644 --- a/libc/inet/resolv.c +++ b/libc/inet/resolv.c @@ -1264,7 +1264,7 @@ int __dns_lookup(const char *name, int variant = -1; /* search domain to append, -1: none */ int local_ns_num = -1; /* Nth server to use */ int local_id = local_id; /* for compiler */ - int sdomains; + int sdomains = 0; bool ends_with_dot; sockaddr46_t sa; @@ -1302,7 +1302,9 @@ int __dns_lookup(const char *name, * or do other Really Bad Things. */ __UCLIBC_MUTEX_LOCK(__resolv_lock); __open_nameservers(); - sdomains = __searchdomains; + if (type != T_PTR) { + sdomains = __searchdomains; + } lookup[name_len] = '\0'; if ((unsigned)variant < sdomains) { /* lookup is name_len + 1 + MAXLEN_searchdomain + 1 long */ |