privsep: Don't carry ifa_next

While harmless, it's also meaningless.

diff --git a/src/privsep-root.c b/src/privsep-root.c
index affcf3c6f6c13bb826854a1cfab7db984259205e..942fdd8474290d45c2262f9aa80230ee66aaf3d5 100644 (file)
--- a/src/privsep-root.c
+++ b/src/privsep-root.c
@@ -336,11 +336,11 @@ ps_root_dowritefile(const struct dhcpcd_ctx *ctx,
 static ssize_t
 ps_root_dogetifaddrs(void **rdata, size_t *rlen)
 {
-       struct ifaddrs *ifaddrs, *ifa;
+       struct ifaddrs *ifaddrs, *ifa, *ifa_next;
        size_t len;
        uint8_t *buf, *sap;
        socklen_t salen;
-       void *ifdata;
+       void *ifa_data;
 
        if (getifaddrs(&ifaddrs) == -1)
                return -1;
@@ -380,12 +380,15 @@ ps_root_dogetifaddrs(void **rdata, size_t *rlen)
        *rlen = len;
 
        for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) {
-               /* Don't carry ifa_data. */
-               ifdata = ifa->ifa_data;
+               /* Don't carry ifa_data or ifa_next. */
+               ifa_data = ifa->ifa_data;
+               ifa_next = ifa->ifa_next;
                ifa->ifa_data = NULL;
+               ifa->ifa_next = NULL;
                memcpy(buf, ifa, sizeof(*ifa));
                buf += ALIGN(sizeof(*ifa));
-               ifa->ifa_data = ifdata;
+               ifa->ifa_data = ifa_data;
+               ifa->ifa_next = ifa_next;
 
                strlcpy((char *)buf, ifa->ifa_name, IFNAMSIZ);
                buf += ALIGN(IFNAMSIZ);