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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2016-03-20 13:20:42 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2016-07-03 23:24:54 +0200
commit972487b878dbdbdc9402208aace41c9573aa6c8b (patch)
tree6c3a509e210e72541b74c9638449e3ab0cbfe681 /slirp
parent9a48e3670030148a8d00c8d4d4cd7f051c0d9f39 (diff)
downloadqemu-arm-972487b878dbdbdc9402208aace41c9573aa6c8b.tar.gz
slirp: Split get_dns_addr
Separate get_dns_addr into get_dns_addr_cached and get_dns_addr_resolv_conf to make conversion to IPv6 easier. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'slirp')
-rw-r--r--slirp/slirp.c53
1 files changed, 34 insertions, 19 deletions
diff --git a/slirp/slirp.c b/slirp/slirp.c
index 9f4bea3d3b..e63c5e8fc6 100644
--- a/slirp/slirp.c
+++ b/slirp/slirp.c
@@ -109,7 +109,28 @@ static void winsock_cleanup(void)
static struct stat dns_addr_stat;
-int get_dns_addr(struct in_addr *pdns_addr)
+static int get_dns_addr_cached(struct in_addr *pdns_addr)
+{
+ struct stat old_stat;
+ if (curtime - dns_addr_time < TIMEOUT_DEFAULT) {
+ *pdns_addr = dns_addr;
+ return 0;
+ }
+ old_stat = dns_addr_stat;
+ if (stat("/etc/resolv.conf", &dns_addr_stat) != 0) {
+ return -1;
+ }
+ if (dns_addr_stat.st_dev == old_stat.st_dev
+ && dns_addr_stat.st_ino == old_stat.st_ino
+ && dns_addr_stat.st_size == old_stat.st_size
+ && dns_addr_stat.st_mtime == old_stat.st_mtime) {
+ *pdns_addr = dns_addr;
+ return 0;
+ }
+ return 1;
+}
+
+static int get_dns_addr_resolv_conf(struct in_addr *pdns_addr)
{
char buff[512];
char buff2[257];
@@ -117,24 +138,6 @@ int get_dns_addr(struct in_addr *pdns_addr)
int found = 0;
struct in_addr tmp_addr;
- if (dns_addr.s_addr != 0) {
- struct stat old_stat;
- if ((curtime - dns_addr_time) < TIMEOUT_DEFAULT) {
- *pdns_addr = dns_addr;
- return 0;
- }
- old_stat = dns_addr_stat;
- if (stat("/etc/resolv.conf", &dns_addr_stat) != 0)
- return -1;
- if ((dns_addr_stat.st_dev == old_stat.st_dev)
- && (dns_addr_stat.st_ino == old_stat.st_ino)
- && (dns_addr_stat.st_size == old_stat.st_size)
- && (dns_addr_stat.st_mtime == old_stat.st_mtime)) {
- *pdns_addr = dns_addr;
- return 0;
- }
- }
-
f = fopen("/etc/resolv.conf", "r");
if (!f)
return -1;
@@ -174,6 +177,18 @@ int get_dns_addr(struct in_addr *pdns_addr)
return 0;
}
+int get_dns_addr(struct in_addr *pdns_addr)
+{
+ if (dns_addr.s_addr != 0) {
+ int ret;
+ ret = get_dns_addr_cached(pdns_addr);
+ if (ret <= 0) {
+ return ret;
+ }
+ }
+ return get_dns_addr_resolv_conf(pdns_addr);
+}
+
#endif
static void slirp_init_once(void)