diff options
Diffstat (limited to 'src/network/networkd-netdev-tuntap.c')
| -rw-r--r-- | src/network/networkd-netdev-tuntap.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/src/network/networkd-netdev-tuntap.c b/src/network/networkd-netdev-tuntap.c deleted file mode 100644 index 088a4d8d32..0000000000 --- a/src/network/networkd-netdev-tuntap.c +++ /dev/null @@ -1,183 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2014 Susant Sahani <susant@redhat.com> - - 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 <fcntl.h> -#include <linux/if_tun.h> -#include <net/if.h> -#include <netinet/if_ether.h> -#include <sys/ioctl.h> -#include <sys/stat.h> -#include <sys/types.h> - -#include "alloc-util.h" -#include "fd-util.h" -#include "networkd-netdev-tuntap.h" -#include "user-util.h" - -#define TUN_DEV "/dev/net/tun" - -static int netdev_fill_tuntap_message(NetDev *netdev, struct ifreq *ifr) { - TunTap *t; - - assert(netdev); - assert(netdev->ifname); - assert(ifr); - - if (netdev->kind == NETDEV_KIND_TAP) { - t = TAP(netdev); - ifr->ifr_flags |= IFF_TAP; - } else { - t = TUN(netdev); - ifr->ifr_flags |= IFF_TUN; - } - - if (!t->packet_info) - ifr->ifr_flags |= IFF_NO_PI; - - if (t->one_queue) - ifr->ifr_flags |= IFF_ONE_QUEUE; - - if (t->multi_queue) - ifr->ifr_flags |= IFF_MULTI_QUEUE; - - if (t->vnet_hdr) - ifr->ifr_flags |= IFF_VNET_HDR; - - strncpy(ifr->ifr_name, netdev->ifname, IFNAMSIZ-1); - - return 0; -} - -static int netdev_tuntap_add(NetDev *netdev, struct ifreq *ifr) { - _cleanup_close_ int fd; - TunTap *t = NULL; - const char *user; - const char *group; - uid_t uid; - gid_t gid; - int r; - - assert(netdev); - assert(ifr); - - fd = open(TUN_DEV, O_RDWR); - if (fd < 0) - return log_netdev_error_errno(netdev, -errno, "Failed to open tun dev: %m"); - - r = ioctl(fd, TUNSETIFF, ifr); - if (r < 0) - return log_netdev_error_errno(netdev, -errno, "TUNSETIFF failed on tun dev: %m"); - - if (netdev->kind == NETDEV_KIND_TAP) - t = TAP(netdev); - else - t = TUN(netdev); - - assert(t); - - if (t->user_name) { - - user = t->user_name; - - r = get_user_creds(&user, &uid, NULL, NULL, NULL); - if (r < 0) - return log_netdev_error_errno(netdev, r, "Cannot resolve user name %s: %m", t->user_name); - - r = ioctl(fd, TUNSETOWNER, uid); - if (r < 0) - return log_netdev_error_errno(netdev, -errno, "TUNSETOWNER failed on tun dev: %m"); - } - - if (t->group_name) { - - group = t->group_name; - - r = get_group_creds(&group, &gid); - if (r < 0) - return log_netdev_error_errno(netdev, r, "Cannot resolve group name %s: %m", t->group_name); - - r = ioctl(fd, TUNSETGROUP, gid); - if (r < 0) - return log_netdev_error_errno(netdev, -errno, "TUNSETGROUP failed on tun dev: %m"); - - } - - r = ioctl(fd, TUNSETPERSIST, 1); - if (r < 0) - return log_netdev_error_errno(netdev, -errno, "TUNSETPERSIST failed on tun dev: %m"); - - return 0; -} - -static int netdev_create_tuntap(NetDev *netdev) { - struct ifreq ifr = {}; - int r; - - r = netdev_fill_tuntap_message(netdev, &ifr); - if (r < 0) - return r; - - return netdev_tuntap_add(netdev, &ifr); -} - -static void tuntap_done(NetDev *netdev) { - TunTap *t = NULL; - - assert(netdev); - - if (netdev->kind == NETDEV_KIND_TUN) - t = TUN(netdev); - else - t = TAP(netdev); - - assert(t); - - t->user_name = mfree(t->user_name); - t->group_name = mfree(t->group_name); -} - -static int tuntap_verify(NetDev *netdev, const char *filename) { - assert(netdev); - - if (netdev->mtu) - log_netdev_warning(netdev, "MTU configured for %s, ignoring", netdev_kind_to_string(netdev->kind)); - - if (netdev->mac) - log_netdev_warning(netdev, "MAC configured for %s, ignoring", netdev_kind_to_string(netdev->kind)); - - return 0; -} - -const NetDevVTable tun_vtable = { - .object_size = sizeof(TunTap), - .sections = "Match\0NetDev\0Tun\0", - .config_verify = tuntap_verify, - .done = tuntap_done, - .create = netdev_create_tuntap, - .create_type = NETDEV_CREATE_INDEPENDENT, -}; - -const NetDevVTable tap_vtable = { - .object_size = sizeof(TunTap), - .sections = "Match\0NetDev\0Tap\0", - .config_verify = tuntap_verify, - .done = tuntap_done, - .create = netdev_create_tuntap, - .create_type = NETDEV_CREATE_INDEPENDENT, -}; |