We rely on C11 already, so we can use clearer and more type-checkable
struct assignment instead of mempcy() for copying IP addresses around.
This exposes some "pointer could be const" warnings from cppcheck, so
address those too.
Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
conf.c | 12 ++++++------
dhcpv6.c | 10 ++++++----
2 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/conf.c b/conf.c
index 750fdc86..9b05afeb 100644
--- a/conf.c
+++ b/conf.c
@@ -389,14 +389,14 @@ static void add_dns6(struct ctx *c,
/* Guest or container can only access local addresses via redirect */
if (IN6_IS_ADDR_LOOPBACK(addr)) {
if (!c->no_map_gw) {
- memcpy(*conf, &c->ip6.gw, sizeof(**conf));
+ **conf = c->ip6.gw;
(*conf)++;
if (IN6_IS_ADDR_UNSPECIFIED(&c->ip6.dns_match))
- memcpy(&c->ip6.dns_match, addr, sizeof(*addr));
+ c->ip6.dns_match = *addr;
}
} else {
- memcpy(*conf, addr, sizeof(**conf));
+ **conf = *addr;
(*conf)++;
}
@@ -632,7 +632,7 @@ static unsigned int conf_ip4(unsigned int ifi,
ip4->prefix_len = 32;
}
- memcpy(&ip4->addr_seen, &ip4->addr, sizeof(ip4->addr_seen));
+ ip4->addr_seen = ip4->addr;
if (MAC_IS_ZERO(mac)) {
int rc = nl_link_get_mac(nl_sock, ifi, mac);
@@ -693,8 +693,8 @@ static unsigned int conf_ip6(unsigned int ifi,
return 0;
}
- memcpy(&ip6->addr_seen, &ip6->addr, sizeof(ip6->addr));
- memcpy(&ip6->addr_ll_seen, &ip6->addr_ll, sizeof(ip6->addr_ll));
+ ip6->addr_seen = ip6->addr;
+ ip6->addr_ll_seen = ip6->addr_ll;
if (MAC_IS_ZERO(mac)) {
rc = nl_link_get_mac(nl_sock, ifi, mac);
diff --git a/dhcpv6.c b/dhcpv6.c
index bbed41dc..1c595fd7 100644
--- a/dhcpv6.c
+++ b/dhcpv6.c
@@ -298,7 +298,8 @@ static struct opt_hdr *dhcpv6_ia_notonlink(const struct pool *p,
{
char buf[INET6_ADDRSTRLEN];
struct in6_addr req_addr;
- struct opt_hdr *ia, *h;
+ const struct opt_hdr *h;
+ struct opt_hdr *ia;
size_t offset;
int ia_type;
@@ -312,12 +313,13 @@ ia_ta:
offset += sizeof(struct opt_ia_na);
while ((h = dhcpv6_opt(p, &offset, OPT_IAAADR))) {
- struct opt_ia_addr *opt_addr = (struct opt_ia_addr *)h;
+ const struct opt_ia_addr *opt_addr;
if (ntohs(h->l) != OPT_VSIZE(ia_addr))
return NULL;
- memcpy(&req_addr, &opt_addr->addr, sizeof(req_addr));
+ opt_addr = (const struct opt_ia_addr *)h;
+ req_addr = opt_addr->addr;
if (!IN6_ARE_ADDR_EQUAL(la, &req_addr)) {
info("DHCPv6: requested address %s not on link",
inet_ntop(AF_INET6, &req_addr,
@@ -363,7 +365,7 @@ static size_t dhcpv6_dns_fill(const struct ctx *c, char *buf, int
offset)
srv->hdr.l = 0;
}
- memcpy(&srv->addr[i], &c->ip6.dns[i], sizeof(srv->addr[i]));
+ srv->addr[i] = c->ip6.dns[i];
srv->hdr.l += sizeof(srv->addr[i]);
offset += sizeof(srv->addr[i]);
}
--
2.46.0