[uclibc-ng-devel] [PATCH] 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 &lt;thockin(a)google.com&gt; --- libc/inet/resolv.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c index 4b33896..27190f0 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 */ -- 2.7.0.rc3.207.g0ac5344