Remove dead lines in various places

[elogind.git] / src / libsystemd / sd-rtnl / rtnl-message.c

diff --git a/src/libsystemd/sd-rtnl/rtnl-message.c b/src/libsystemd/sd-rtnl/rtnl-message.c
index 39ef25ef9ec917577cee668891280f73877fed0c..dc749479939fc8b7d05c548f8243e23dab349c57 100644 (file)
--- a/src/libsystemd/sd-rtnl/rtnl-message.c
+++ b/src/libsystemd/sd-rtnl/rtnl-message.c
@@ -19,25 +19,26 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <linux/rtnetlink.h>
 #include <netinet/in.h>
 #include <netinet/ether.h>
 #include <stdbool.h>
 #include <unistd.h>
+#include <linux/veth.h>
 
 #include "util.h"
 #include "refcnt.h"
+#include "missing.h"
 
 #include "sd-rtnl.h"
 #include "rtnl-util.h"
 #include "rtnl-internal.h"
 
-#define GET_CONTAINER(m, i) (i < (m)->n_containers ? (struct rtattr*)((uint8_t*)(m)->hdr + (m)->container_offsets[i]) : NULL)
+#define GET_CONTAINER(m, i) ((i) < (m)->n_containers ? (struct rtattr*)((uint8_t*)(m)->hdr + (m)->container_offsets[i]) : NULL)
 #define NEXT_RTA(m) ((struct rtattr*)((uint8_t*)(m)->hdr + (m)->next_rta_offset))
 #define UPDATE_RTA(m, new) (m)->next_rta_offset = (uint8_t*)(new) - (uint8_t*)(m)->hdr;
 #define PUSH_CONTAINER(m, new) (m)->container_offsets[(m)->n_containers ++] = (uint8_t*)(new) - (uint8_t*)(m)->hdr;
 
-int message_new(sd_rtnl_message **ret, size_t initial_size) {
+int message_new(sd_rtnl *rtnl, sd_rtnl_message **ret, size_t initial_size) {
         sd_rtnl_message *m;
 
         assert_return(ret, -EINVAL);
@@ -58,6 +59,9 @@ int message_new(sd_rtnl_message **ret, size_t initial_size) {
         m->hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
         m->sealed = false;
 
+        if (rtnl)
+                m->rtnl = sd_rtnl_ref(rtnl);
+
         *ret = m;
 
         return 0;
@@ -81,8 +85,8 @@ int sd_rtnl_message_route_set_dst_prefixlen(sd_rtnl_message *m, unsigned char pr
         return 0;
 }
 
-int sd_rtnl_message_route_new(uint16_t nlmsg_type, unsigned char rtm_family,
-                              sd_rtnl_message **ret) {
+int sd_rtnl_message_new_route(sd_rtnl *rtnl, sd_rtnl_message **ret,
+                              uint16_t nlmsg_type, unsigned char rtm_family) {
         struct rtmsg *rtm;
         int r;
 
@@ -90,7 +94,7 @@ int sd_rtnl_message_route_new(uint16_t nlmsg_type, unsigned char rtm_family,
         assert_return(rtm_family == AF_INET || rtm_family == AF_INET6, -EINVAL);
         assert_return(ret, -EINVAL);
 
-        r = message_new(ret, NLMSG_SPACE(sizeof(struct rtmsg)));
+        r = message_new(rtnl, ret, NLMSG_SPACE(sizeof(struct rtmsg)));
         if (r < 0)
                 return r;
 
@@ -118,14 +122,12 @@ int sd_rtnl_message_link_set_flags(sd_rtnl_message *m, unsigned flags, unsigned
         assert_return(m, -EINVAL);
         assert_return(m->hdr, -EINVAL);
         assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+        assert_return(change, -EINVAL);
 
         ifi = NLMSG_DATA(m->hdr);
 
         ifi->ifi_flags = flags;
-        if (change)
-                ifi->ifi_change = change;
-        else
-                ifi->ifi_change = 0xffffffff;
+        ifi->ifi_change = change;
 
         return 0;
 }
@@ -144,15 +146,17 @@ int sd_rtnl_message_link_set_type(sd_rtnl_message *m, unsigned type) {
         return 0;
 }
 
-int sd_rtnl_message_link_new(uint16_t nlmsg_type, int index, sd_rtnl_message **ret) {
+int sd_rtnl_message_new_link(sd_rtnl *rtnl, sd_rtnl_message **ret,
+                             uint16_t nlmsg_type, int index) {
         struct ifinfomsg *ifi;
         int r;
 
         assert_return(rtnl_message_type_is_link(nlmsg_type), -EINVAL);
-        assert_return(nlmsg_type == RTM_NEWLINK || index > 0, -EINVAL);
+        assert_return(nlmsg_type == RTM_NEWLINK ||
+                      nlmsg_type == RTM_SETLINK || index > 0, -EINVAL);
         assert_return(ret, -EINVAL);
 
-        r = message_new(ret, NLMSG_SPACE(sizeof(struct ifinfomsg)));
+        r = message_new(rtnl, ret, NLMSG_SPACE(sizeof(struct ifinfomsg)));
         if (r < 0)
                 return r;
 
@@ -217,8 +221,9 @@ int sd_rtnl_message_addr_set_scope(sd_rtnl_message *m, unsigned char scope) {
         return 0;
 }
 
-int sd_rtnl_message_addr_new(uint16_t nlmsg_type, int index, unsigned char family,
-                             sd_rtnl_message **ret) {
+int sd_rtnl_message_new_addr(sd_rtnl *rtnl, sd_rtnl_message **ret,
+                             uint16_t nlmsg_type, int index,
+                             unsigned char family) {
         struct ifaddrmsg *ifa;
         int r;
 
@@ -227,12 +232,14 @@ int sd_rtnl_message_addr_new(uint16_t nlmsg_type, int index, unsigned char famil
         assert_return(family == AF_INET || family == AF_INET6, -EINVAL);
         assert_return(ret, -EINVAL);
 
-        r = message_new(ret, NLMSG_SPACE(sizeof(struct ifaddrmsg)));
+        r = message_new(rtnl, ret, NLMSG_SPACE(sizeof(struct ifaddrmsg)));
         if (r < 0)
                 return r;
 
         (*ret)->hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
         (*ret)->hdr->nlmsg_type = nlmsg_type;
+        if (nlmsg_type == RTM_GETADDR && family == AF_INET)
+                (*ret)->hdr->nlmsg_flags |= NLM_F_DUMP;
 
         ifa = NLMSG_DATA((*ret)->hdr);
 
@@ -257,6 +264,7 @@ sd_rtnl_message *sd_rtnl_message_ref(sd_rtnl_message *m) {
 
 sd_rtnl_message *sd_rtnl_message_unref(sd_rtnl_message *m) {
         if (m && REFCNT_DEC(m->n_ref) <= 0) {
+                sd_rtnl_unref(m->rtnl);
                 free(m->hdr);
                 free(m);
         }
@@ -472,7 +480,7 @@ int sd_rtnl_message_append_u16(sd_rtnl_message *m, unsigned short type, uint16_t
                                 break;
                         else
                                 return -ENOTSUP;
-                        break;
+
                 default:
                         return -ENOTSUP;
         }
@@ -507,6 +515,10 @@ int sd_rtnl_message_append_u32(sd_rtnl_message *m, unsigned short type, uint32_t
                                 case IFLA_LINK:
                                 case IFLA_GROUP:
                                 case IFLA_TXQLEN:
+                                case IFLA_WEIGHT:
+                                case IFLA_NET_NS_FD:
+                                case IFLA_NET_NS_PID:
+                                case IFLA_PROMISCUITY:
                                 case IFLA_NUM_TX_QUEUES:
                                 case IFLA_NUM_RX_QUEUES:
                                         break;
@@ -522,6 +534,7 @@ int sd_rtnl_message_append_u32(sd_rtnl_message *m, unsigned short type, uint32_t
                                 case RTA_PRIORITY:
                                 case RTA_IIF:
                                 case RTA_OIF:
+                                case RTA_MARK:
                                         break;
                                 default:
                                         return -ENOTSUP;
@@ -704,16 +717,18 @@ int sd_rtnl_message_open_container(sd_rtnl_message *m, unsigned short type) {
         sd_rtnl_message_get_type(m, &rtm_type);
 
         if (rtnl_message_type_is_link(rtm_type)) {
+
                 if ((type == IFLA_LINKINFO && m->n_containers == 0) ||
                     (type == IFLA_INFO_DATA && m->n_containers == 1 &&
                      GET_CONTAINER(m, 0)->rta_type == IFLA_LINKINFO))
                         return add_rtattr(m, type, NULL, 0);
-                else
-                        return -ENOTSUP;
-        } else
-                return -ENOTSUP;
+                else if (type == VETH_INFO_PEER && m->n_containers == 2 &&
+                         GET_CONTAINER(m, 1)->rta_type == IFLA_INFO_DATA &&
+                         GET_CONTAINER(m, 0)->rta_type == IFLA_LINKINFO)
+                        return add_rtattr(m, type, NULL, sizeof(struct ifinfomsg));
+        }
 
-        return 0;
+        return -ENOTSUP;
 }
 
 int sd_rtnl_message_close_container(sd_rtnl_message *m) {
@@ -889,7 +904,7 @@ int socket_read_message(sd_rtnl *nl, sd_rtnl_message **ret) {
         if (r < 0)
                 return r;
 
-        r = message_new(&m, need);
+        r = message_new(nl, &m, need);
         if (r < 0)
                 return r;
 
@@ -917,10 +932,6 @@ int socket_read_message(sd_rtnl *nl, sd_rtnl_message **ret) {
 
         if (k > 0)
                 switch (m->hdr->nlmsg_type) {
-                        struct ifinfomsg *ifi;
-                        struct ifaddrmsg *ifa;
-                        struct rtmsg *rtm;
-
                         /* check that the size matches the message type */
                         case NLMSG_ERROR:
                                 if (m->hdr->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr)))
@@ -933,6 +944,8 @@ int socket_read_message(sd_rtnl *nl, sd_rtnl_message **ret) {
                                 if (m->hdr->nlmsg_len < NLMSG_LENGTH(sizeof(struct ifinfomsg)))
                                         k = -EIO;
                                 else {
+                                        struct ifinfomsg *ifi;
+
                                         ifi = NLMSG_DATA(m->hdr);
                                         UPDATE_RTA(m, IFLA_RTA(ifi));
                                 }
@@ -943,6 +956,8 @@ int socket_read_message(sd_rtnl *nl, sd_rtnl_message **ret) {
                                 if (m->hdr->nlmsg_len < NLMSG_LENGTH(sizeof(struct ifaddrmsg)))
                                         k = -EIO;
                                 else {
+                                        struct ifaddrmsg *ifa;
+
                                         ifa = NLMSG_DATA(m->hdr);
                                         UPDATE_RTA(m, IFA_RTA(ifa));
                                 }
@@ -953,6 +968,8 @@ int socket_read_message(sd_rtnl *nl, sd_rtnl_message **ret) {
                                 if (m->hdr->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtmsg)))
                                         k = -EIO;
                                 else {
+                                        struct rtmsg *rtm;
+
                                         rtm = NLMSG_DATA(m->hdr);
                                         UPDATE_RTA(m, RTM_RTA(rtm));
                                 }