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dns: fix recursive loop 

resolv() uses getenv_ip() which in turn calls resolv(). Fix
this inifinite loop by not using getenv_ip directly.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2012-05-16 08:37:08 +02:00
parent 89eb305e49
commit 611719282d
1 changed files with 9 additions and 2 deletions
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11
net/dns.c
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@ -197,6 +197,7 @@ static void dns_handler(void *ctx, char *packet, unsigned len)
IPaddr_t resolv(char *host)
{
IPaddr_t ip;
const char *ns;
if (!string_to_ip(host, &ip))
return ip;
@ -205,8 +206,14 @@ IPaddr_t resolv(char *host)
dns_state = STATE_INIT;
ip = getenv_ip("net.nameserver");
if (!ip)
ns = getenv("net.nameserver");
if (!ns || !*ns) {
printk("%s: no nameserver specified in $net.nameserver\n",
__func__);
return 0;
}
if (string_to_ip(ns, &ip))
return 0;
debug("resolving host %s via nameserver %s\n", host, ip_to_string(ip));