/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2013 Tom Gundersen <teg@jklm.no> systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <linux/rtnetlink.h> #include <netinet/ether.h> #include "util.h" #include "macro.h" #include "sd-rtnl.h" #include "socket-util.h" #include "rtnl-util.h" #include "event-util.h" static void test_link_configure(sd_rtnl *rtnl, int ifindex) { _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *message; uint16_t type; const char *mac = "98:fe:94:3f:c6:18", *name = "test"; unsigned int mtu = 1450; void *data; /* we'd really like to test NEWLINK, but let's not mess with the running kernel */ assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, &message) >= 0); assert(sd_rtnl_message_append_string(message, IFLA_IFNAME, name) >= 0); assert(sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0); assert(sd_rtnl_message_append_u32(message, IFLA_MTU, mtu) >= 0); assert(sd_rtnl_message_read(message, &type, &data) > 0); assert(type == IFLA_IFNAME); assert(streq(name, (char *) data)); assert(sd_rtnl_message_read(message, &type, &data) > 0); assert(type == IFLA_ADDRESS); assert(streq(mac, ether_ntoa(data))); assert(sd_rtnl_message_read(message, &type, &data) > 0); assert(type == IFLA_MTU); assert(mtu == *(unsigned int *) data); assert(sd_rtnl_call(rtnl, message, 0, NULL) == 1); } static void test_route(void) { _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req; struct in_addr addr; uint32_t index = 2; uint16_t type; void *data; int r; r = sd_rtnl_message_route_new(RTM_NEWROUTE, AF_INET, &req); if (r < 0) { log_error("Could not create RTM_NEWROUTE message: %s", strerror(-r)); return; } addr.s_addr = htonl(INADDR_LOOPBACK); r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &addr); if (r < 0) { log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r)); return; } r = sd_rtnl_message_append_u32(req, RTA_OIF, index); if (r < 0) { log_error("Could not append RTA_OIF attribute: %s", strerror(-r)); return; } assert(sd_rtnl_message_read(req, &type, &data) > 0); assert(type == RTA_GATEWAY); assert(((struct in_addr *)data)->s_addr == addr.s_addr); assert(sd_rtnl_message_read(req, &type, &data) > 0); assert(type == RTA_OIF); assert(*(uint32_t *) data == index); } static void test_multiple(void) { sd_rtnl *rtnl1, *rtnl2; assert(sd_rtnl_open(0, &rtnl1) >= 0); assert(sd_rtnl_open(0, &rtnl2) >= 0); rtnl1 = sd_rtnl_unref(rtnl1); rtnl2 = sd_rtnl_unref(rtnl2); } static int link_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { void *data; uint16_t type; char *ifname = userdata; assert(rtnl); assert(m); log_info("got link info about %s", ifname); free(ifname); while (sd_rtnl_message_read(m, &type, &data) > 0) { switch (type) { // case IFLA_MTU: // assert(*(unsigned int *) data == 65536); // break; // case IFLA_QDISC: // assert(streq((char *) data, "noqueue")); // break; case IFLA_IFNAME: assert(streq((char *) data, "lo")); break; } } return 1; } static void test_event_loop(int ifindex) { _cleanup_event_unref_ sd_event *event = NULL; _cleanup_sd_rtnl_unref_ sd_rtnl *rtnl = NULL; _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m = NULL; char *ifname; ifname = strdup("lo2"); assert(ifname); assert(sd_rtnl_open(0, &rtnl) >= 0); assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, &m) >= 0); assert(sd_rtnl_call_async(rtnl, m, &link_handler, ifname, 0, NULL) >= 0); assert(sd_event_default(&event) >= 0); assert(sd_rtnl_attach_event(rtnl, event, 0) >= 0); assert(sd_event_run(event, 0) >= 0); assert(sd_rtnl_detach_event(rtnl) >= 0); } static int pipe_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { int *counter = userdata; (*counter) --; log_info("got reply, %d left in pipe", *counter); return sd_rtnl_message_get_errno(m); } static void test_async(int ifindex) { _cleanup_sd_rtnl_unref_ sd_rtnl *rtnl = NULL; _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m = NULL, *r = NULL; uint32_t serial; char *ifname; ifname = strdup("lo"); assert(ifname); assert(sd_rtnl_open(0, &rtnl) >= 0); assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, &m) >= 0); assert(sd_rtnl_call_async(rtnl, m, &link_handler, ifname, 0, &serial) >= 0); assert(sd_rtnl_wait(rtnl, 0) >= 0); assert(sd_rtnl_process(rtnl, &r) >= 0); } static void test_pipe(int ifindex) { _cleanup_sd_rtnl_unref_ sd_rtnl *rtnl = NULL; _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m1 = NULL, *m2 = NULL; int counter = 0; assert(sd_rtnl_open(0, &rtnl) >= 0); assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, &m1) >= 0); assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, &m2) >= 0); counter ++; assert(sd_rtnl_call_async(rtnl, m1, &pipe_handler, &counter, 0, NULL) >= 0); counter ++; assert(sd_rtnl_call_async(rtnl, m2, &pipe_handler, &counter, 0, NULL) >= 0); while (counter > 0) { assert(sd_rtnl_wait(rtnl, 0) >= 0); assert(sd_rtnl_process(rtnl, NULL) >= 0); } } static void test_container(void) { _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m = NULL; uint16_t type; void *data; assert(sd_rtnl_message_link_new(RTM_NEWLINK, 0, &m) >= 0); assert(sd_rtnl_message_open_container(m, IFLA_LINKINFO) >= 0); assert(sd_rtnl_message_open_container(m, IFLA_LINKINFO) == -EINVAL); assert(sd_rtnl_message_append_string(m, IFLA_INFO_KIND, "kind") >= 0); assert(sd_rtnl_message_close_container(m) >= 0); assert(sd_rtnl_message_close_container(m) == -EINVAL); assert(sd_rtnl_message_read(m, &type, &data) == -EINVAL); /* TODO: add support for entering containers assert(sd_rtnl_message_read(m, &type, &data) > 0); assert(type == IFLA_INFO_KIND); assert(streq("kind", (char *) data)); assert(sd_rtnl_message_read(m, &type, &data) == 0); */ } static void test_match(void) { _cleanup_sd_rtnl_unref_ sd_rtnl *rtnl = NULL; assert(sd_rtnl_open(0, &rtnl) >= 0); assert(sd_rtnl_add_match(rtnl, RTM_NEWLINK, &link_handler, NULL) >= 0); assert(sd_rtnl_add_match(rtnl, RTM_NEWLINK, &link_handler, NULL) >= 0); assert(sd_rtnl_remove_match(rtnl, RTM_NEWLINK, &link_handler, NULL) == 1); assert(sd_rtnl_remove_match(rtnl, RTM_NEWLINK, &link_handler, NULL) == 1); assert(sd_rtnl_remove_match(rtnl, RTM_NEWLINK, &link_handler, NULL) == 0); } int main(void) { sd_rtnl *rtnl; sd_rtnl_message *m; sd_rtnl_message *r; void *data; int if_loopback; uint16_t type; unsigned int mtu = 0; unsigned int *mtu_reply; test_match(); test_multiple(); test_route(); test_container(); assert(sd_rtnl_open(0, &rtnl) >= 0); assert(rtnl); if_loopback = (int) if_nametoindex("lo"); assert(if_loopback > 0); test_async(if_loopback); test_pipe(if_loopback); test_event_loop(if_loopback); test_link_configure(rtnl, if_loopback); assert(sd_rtnl_message_link_new(RTM_GETLINK, if_loopback, &m) >= 0); assert(m); assert(sd_rtnl_message_get_type(m, &type) >= 0); assert(type == RTM_GETLINK); assert(sd_rtnl_message_read(m, &type, &data) == 0); assert(sd_rtnl_call(rtnl, m, 0, &r) == 1); assert(sd_rtnl_message_get_type(r, &type) >= 0); assert(type == RTM_NEWLINK); assert(sd_rtnl_message_read(m, &type, &data) == 0); assert((r = sd_rtnl_message_unref(r)) == NULL); assert(sd_rtnl_call(rtnl, m, -1, &r) == -EPERM); assert((m = sd_rtnl_message_unref(m)) == NULL); assert((r = sd_rtnl_message_unref(r)) == NULL); assert(sd_rtnl_message_link_new(RTM_GETLINK, if_loopback, &m) >= 0); assert(m); assert(sd_rtnl_message_append_u32(m, IFLA_MTU, mtu) >= 0); assert(sd_rtnl_message_read(m, &type, (void **) &mtu_reply) == 1); assert(type == IFLA_MTU); assert(*mtu_reply == 0); assert(sd_rtnl_message_read(m, &type, &data) == 0); assert(sd_rtnl_call(rtnl, m, -1, &r) == 1); while (sd_rtnl_message_read(r, &type, &data) > 0) { switch (type) { // case IFLA_MTU: // assert(*(unsigned int *) data == 65536); // break; // case IFLA_QDISC: // assert(streq((char *) data, "noqueue")); // break; case IFLA_IFNAME: assert(streq((char *) data, "lo")); break; } } assert(sd_rtnl_flush(rtnl) >= 0); assert((m = sd_rtnl_message_unref(m)) == NULL); assert((r = sd_rtnl_message_unref(r)) == NULL); assert((rtnl = sd_rtnl_unref(rtnl)) == NULL); return EXIT_SUCCESS; }