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sd-rtnl: always include linux/rtnetlink.h
[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 85c59bfed12ca1644b8be055aaa4dbba32105c60..15e3247aca90dff62178320b78a8c3d7f5647664 100644 (file)
--- a/src/libsystemd/sd-rtnl/rtnl-message.c
+++ b/src/libsystemd/sd-rtnl/rtnl-message.c
@@ -19,35 +19,25 @@
   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 "sd-rtnl.h"
+#include "rtnl-util.h"
 #include "rtnl-internal.h"
 
-struct sd_rtnl_message {
-        RefCount n_ref;
-
-        struct nlmsghdr *hdr;
-        size_t container_offsets[RTNL_CONTAINER_DEPTH]; /* offset from hdr to each container's start */
-        unsigned n_containers; /* number of containers */
-        size_t next_rta_offset; /* offset from hdr to next rta */
-
-        bool sealed:1;
-};
-
-#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;
 
-static int message_new(sd_rtnl_message **ret, size_t initial_size) {
+int message_new(sd_rtnl_message **ret, size_t initial_size) {
         sd_rtnl_message *m;
 
         assert_return(ret, -EINVAL);
@@ -73,67 +63,12 @@ static int message_new(sd_rtnl_message **ret, size_t initial_size) {
         return 0;
 }
 
-int message_new_synthetic_error(int error, uint32_t serial, sd_rtnl_message **ret) {
-        struct nlmsgerr *err;
-        int r;
-
-        assert(error <= 0);
-
-        r = message_new(ret, NLMSG_SPACE(sizeof(struct nlmsgerr)));
-        if (r < 0)
-                return r;
-
-        (*ret)->hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr));
-        (*ret)->hdr->nlmsg_type = NLMSG_ERROR;
-        (*ret)->hdr->nlmsg_seq = serial;
-
-        err = NLMSG_DATA((*ret)->hdr);
-
-        err->error = error;
-
-        return 0;
-}
-
-bool message_type_is_route(uint16_t type) {
-        switch (type) {
-                case RTM_NEWROUTE:
-                case RTM_GETROUTE:
-                case RTM_DELROUTE:
-                        return true;
-                default:
-                        return false;
-        }
-}
-
-bool message_type_is_link(uint16_t type) {
-        switch (type) {
-                case RTM_NEWLINK:
-                case RTM_SETLINK:
-                case RTM_GETLINK:
-                case RTM_DELLINK:
-                        return true;
-                default:
-                        return false;
-        }
-}
-
-bool message_type_is_addr(uint16_t type) {
-        switch (type) {
-                case RTM_NEWADDR:
-                case RTM_GETADDR:
-                case RTM_DELADDR:
-                        return true;
-                default:
-                        return false;
-        }
-}
-
 int sd_rtnl_message_route_set_dst_prefixlen(sd_rtnl_message *m, unsigned char prefixlen) {
         struct rtmsg *rtm;
 
         assert_return(m, -EINVAL);
         assert_return(m->hdr, -EINVAL);
-        assert_return(message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+        assert_return(rtnl_message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
 
         rtm = NLMSG_DATA(m->hdr);
 
@@ -146,12 +81,12 @@ 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,
+int sd_rtnl_message_new_route(uint16_t nlmsg_type, unsigned char rtm_family,
                               sd_rtnl_message **ret) {
         struct rtmsg *rtm;
         int r;
 
-        assert_return(message_type_is_route(nlmsg_type), -EINVAL);
+        assert_return(rtnl_message_type_is_route(nlmsg_type), -EINVAL);
         assert_return(rtm_family == AF_INET || rtm_family == AF_INET6, -EINVAL);
         assert_return(ret, -EINVAL);
 
@@ -182,15 +117,13 @@ 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(message_type_is_link(m->hdr->nlmsg_type), -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;
 }
@@ -200,7 +133,7 @@ int sd_rtnl_message_link_set_type(sd_rtnl_message *m, unsigned type) {
 
         assert_return(m, -EINVAL);
         assert_return(m->hdr, -EINVAL);
-        assert_return(message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+        assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
 
         ifi = NLMSG_DATA(m->hdr);
 
@@ -209,11 +142,11 @@ 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(uint16_t nlmsg_type, int index, sd_rtnl_message **ret) {
         struct ifinfomsg *ifi;
         int r;
 
-        assert_return(message_type_is_link(nlmsg_type), -EINVAL);
+        assert_return(rtnl_message_type_is_link(nlmsg_type), -EINVAL);
         assert_return(nlmsg_type == RTM_NEWLINK || index > 0, -EINVAL);
         assert_return(ret, -EINVAL);
 
@@ -241,7 +174,7 @@ int sd_rtnl_message_addr_set_prefixlen(sd_rtnl_message *m, unsigned char prefixl
 
         assert_return(m, -EINVAL);
         assert_return(m->hdr, -EINVAL);
-        assert_return(message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+        assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
 
         ifa = NLMSG_DATA(m->hdr);
 
@@ -259,7 +192,7 @@ int sd_rtnl_message_addr_set_flags(sd_rtnl_message *m, unsigned char flags) {
 
         assert_return(m, -EINVAL);
         assert_return(m->hdr, -EINVAL);
-        assert_return(message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+        assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
 
         ifa = NLMSG_DATA(m->hdr);
 
@@ -273,7 +206,7 @@ int sd_rtnl_message_addr_set_scope(sd_rtnl_message *m, unsigned char scope) {
 
         assert_return(m, -EINVAL);
         assert_return(m->hdr, -EINVAL);
-        assert_return(message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+        assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
 
         ifa = NLMSG_DATA(m->hdr);
 
@@ -282,12 +215,12 @@ 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,
+int sd_rtnl_message_new_addr(uint16_t nlmsg_type, int index, unsigned char family,
                              sd_rtnl_message **ret) {
         struct ifaddrmsg *ifa;
         int r;
 
-        assert_return(message_type_is_addr(nlmsg_type), -EINVAL);
+        assert_return(rtnl_message_type_is_addr(nlmsg_type), -EINVAL);
         assert_return(index > 0, -EINVAL);
         assert_return(family == AF_INET || family == AF_INET6, -EINVAL);
         assert_return(ret, -EINVAL);
@@ -298,6 +231,8 @@ int sd_rtnl_message_addr_new(uint16_t nlmsg_type, int index, unsigned char famil
 
         (*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);
 
@@ -343,7 +278,7 @@ int sd_rtnl_message_link_get_ifindex(sd_rtnl_message *m, int *ifindex) {
 
         assert_return(m, -EINVAL);
         assert_return(m->hdr, -EINVAL);
-        assert_return(message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+        assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
         assert_return(ifindex, -EINVAL);
 
         ifi = NLMSG_DATA(m->hdr);
@@ -358,7 +293,7 @@ int sd_rtnl_message_link_get_flags(sd_rtnl_message *m, unsigned *flags) {
 
         assert_return(m, -EINVAL);
         assert_return(m->hdr, -EINVAL);
-        assert_return(message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+        assert_return(rtnl_message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
         assert_return(flags, -EINVAL);
 
         ifi = NLMSG_DATA(m->hdr);
@@ -475,6 +410,44 @@ int sd_rtnl_message_append_string(sd_rtnl_message *m, unsigned short type, const
         return 0;
 }
 
+int sd_rtnl_message_append_u8(sd_rtnl_message *m, unsigned short type, uint8_t data) {
+        uint16_t rtm_type;
+        int r;
+
+        assert_return(m, -EINVAL);
+        assert_return(!m->sealed, -EPERM);
+
+        r = sd_rtnl_message_get_type(m, &rtm_type);
+        if (r < 0)
+                return r;
+
+        switch (rtm_type) {
+                case RTM_NEWLINK:
+                case RTM_SETLINK:
+                case RTM_GETLINK:
+                case RTM_DELLINK:
+                        switch (type) {
+                                case IFLA_CARRIER:
+                                case IFLA_OPERSTATE:
+                                case IFLA_LINKMODE:
+                                break;
+                        default:
+                                return -ENOTSUP;
+                        }
+
+                        break;
+                default:
+                        return -ENOTSUP;
+        }
+
+        r = add_rtattr(m, type, &data, sizeof(uint8_t));
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+
 int sd_rtnl_message_append_u16(sd_rtnl_message *m, unsigned short type, uint16_t data) {
         uint16_t rtm_type;
         int r;
@@ -532,6 +505,14 @@ int sd_rtnl_message_append_u32(sd_rtnl_message *m, unsigned short type, uint32_t
                                 case IFLA_MASTER:
                                 case IFLA_MTU:
                                 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;
                                 default:
                                         return -ENOTSUP;
@@ -545,6 +526,7 @@ 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;
@@ -726,17 +708,19 @@ int sd_rtnl_message_open_container(sd_rtnl_message *m, unsigned short type) {
 
         sd_rtnl_message_get_type(m, &rtm_type);
 
-        if (message_type_is_link(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) {
@@ -778,7 +762,7 @@ int sd_rtnl_message_read(sd_rtnl_message *m, unsigned short *type, void **data)
 
         *type = NEXT_RTA(m)->rta_type;
 
-        if (message_type_is_link(rtm_type) &&
+        if (rtnl_message_type_is_link(rtm_type) &&
             ((m->n_containers == 0 &&
               NEXT_RTA(m)->rta_type == IFLA_LINKINFO) ||
              (m->n_containers == 1 &&
@@ -805,7 +789,7 @@ int sd_rtnl_message_exit_container(sd_rtnl_message *m) {
         return 0;
 }
 
-uint32_t message_get_serial(sd_rtnl_message *m) {
+uint32_t rtnl_message_get_serial(sd_rtnl_message *m) {
         assert(m);
         assert(m->hdr);
 
@@ -826,7 +810,7 @@ int sd_rtnl_message_get_errno(sd_rtnl_message *m) {
         return err->error;
 }
 
-int message_seal(sd_rtnl *nl, sd_rtnl_message *m) {
+int rtnl_message_seal(sd_rtnl *nl, sd_rtnl_message *m) {
         int r;
 
         assert(m);
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