diff options
Diffstat (limited to 'src/tuntap.c')
| -rw-r--r-- | src/tuntap.c | 57 |
1 files changed, 55 insertions, 2 deletions
diff --git a/src/tuntap.c b/src/tuntap.c index fce0619..6281405 100644 --- a/src/tuntap.c +++ b/src/tuntap.c @@ -42,7 +42,9 @@ #else +#ifndef __APPLE__ #include <net/if_tun.h> +#endif #ifdef __FreeBSD__ #include <net/if_tap.h> @@ -52,7 +54,7 @@ /** Defines if the platform uses an address family header on TUN interfaces */ -#ifdef __linux__ +#if defined(__linux__) || defined(__APPLE__) static const bool multiaf_tun = false; #else static const bool multiaf_tun = true; @@ -294,6 +296,57 @@ void fastd_tuntap_open(void) { #endif +#elif __APPLE__ + +/** Opens the TUN/TAP device */ +void fastd_tuntap_open(void) { + const char *devtype; + switch (conf.mode) { + case MODE_TAP: + devtype = "tap"; + break; + + case MODE_TUN: + devtype = "tun"; + break; + + default: + exit_bug("invalid mode"); + } + + char ifname[5+IFNAMSIZ] = "/dev/"; + if (!conf.ifname) + exit_error("config error: no interface name given."); + else if (strncmp(conf.ifname, devtype, 3) != 0) + exit_error("config error: `%s' doesn't seem to be a %s device", conf.ifname, devtype); + else + strncat(ifname, conf.ifname, IFNAMSIZ-1); + + pr_debug("initializing tun device..."); + + if ((ctx.tunfd = open(ifname, O_RDWR|O_NONBLOCK)) < 0) + exit_errno("could not open tun device file"); + + ctx.ifname = fastd_strndup(conf.ifname, IFNAMSIZ-1); + + int ctl_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP); + if (ctl_sock < 0) + exit_errno("socket"); + + struct ifreq ifr = {}; + strncpy(ifr.ifr_name, conf.ifname, IFNAMSIZ-1); + ifr.ifr_mtu = conf.mtu; + if (ioctl(ctl_sock, SIOCSIFMTU, &ifr) < 0) + exit_errno("SIOCSIFMTU ioctl failed"); + + if (close(ctl_sock)) + pr_error_errno("close"); + + fastd_poll_set_fd_tuntap(); + + pr_debug("tun device initialized."); +} + #else #error unknown tun/tap implementation @@ -348,7 +401,7 @@ void fastd_tuntap_write(fastd_buffer_t buffer) { } if (write(ctx.tunfd, buffer.data, buffer.len) < 0) - pr_warn_errno("write"); + pr_debug2_errno("write"); } /** Closes the TUN/TAP device */ |