X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fbsd%2Fdevice.c;h=c50005b2661f3d2b3bed45c9070c388d69d29e1d;hb=268c8545aaf83b7433f43402f5c77e39e20006ef;hp=9c3009d5bb7931720b33fc361f8f76741aca8718;hpb=33f241d97852d7a171f1aaf1bda7f66356ff889e;p=meshlink diff --git a/src/bsd/device.c b/src/bsd/device.c index 9c3009d5..c50005b2 100644 --- a/src/bsd/device.c +++ b/src/bsd/device.c @@ -1,7 +1,7 @@ /* device.c -- Interaction BSD tun/tap device Copyright (C) 2001-2005 Ivo Timmermans, - 2001-2011 Guus Sliepen + 2001-2012 Guus Sliepen 2009 Grzegorz Dymarek This program is free software; you can redistribute it and/or modify @@ -33,7 +33,12 @@ #include "bsd/tunemu.h" #endif -#define DEFAULT_DEVICE "/dev/tun0" +#define DEFAULT_TUN_DEVICE "/dev/tun0" +#if defined(HAVE_FREEBSD) || defined(HAVE_NETBSD) +#define DEFAULT_TAP_DEVICE "/dev/tap0" +#else +#define DEFAULT_TAP_DEVICE "/dev/tun0" +#endif typedef enum device_type { DEVICE_TYPE_TUN, @@ -58,11 +63,15 @@ static device_type_t device_type = DEVICE_TYPE_TUNIFHEAD; static device_type_t device_type = DEVICE_TYPE_TUN; #endif -bool setup_device(void) { +static bool setup_device(void) { char *type; - if(!get_config_string(lookup_config(config_tree, "Device"), &device)) - device = xstrdup(DEFAULT_DEVICE); + if(!get_config_string(lookup_config(config_tree, "Device"), &device)) { + if(routing_mode == RMODE_ROUTER) + device = xstrdup(DEFAULT_TUN_DEVICE); + else + device = xstrdup(DEFAULT_TAP_DEVICE); + } if(!get_config_string(lookup_config(config_tree, "Interface"), &iface)) iface = xstrdup(strrchr(device, '/') ? strrchr(device, '/') + 1 : device); @@ -81,7 +90,7 @@ bool setup_device(void) { else if(!strcasecmp(type, "tap")) device_type = DEVICE_TYPE_TAP; else { - logger(LOG_ERR, "Unknown device type %s!", type); + logger(DEBUG_ALWAYS, LOG_ERR, "Unknown device type %s!", type); return false; } } else { @@ -102,10 +111,14 @@ bool setup_device(void) { } if(device_fd < 0) { - logger(LOG_ERR, "Could not open %s: %s", device, strerror(errno)); + logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", device, strerror(errno)); return false; } +#ifdef FD_CLOEXEC + fcntl(device_fd, F_SETFD, FD_CLOEXEC); +#endif + switch(device_type) { default: device_type = DEVICE_TYPE_TUN; @@ -114,7 +127,7 @@ bool setup_device(void) { { const int zero = 0; if(ioctl(device_fd, TUNSIFHEAD, &zero, sizeof zero) == -1) { - logger(LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno)); + logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno)); return false; } } @@ -133,7 +146,7 @@ bool setup_device(void) { { const int one = 1; if(ioctl(device_fd, TUNSIFHEAD, &one, sizeof one) == -1) { - logger(LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno)); + logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno)); return false; } } @@ -170,12 +183,12 @@ bool setup_device(void) { #endif } - logger(LOG_INFO, "%s is a %s", device, device_info); + logger(DEBUG_ALWAYS, LOG_INFO, "%s is a %s", device, device_info); return true; } -void close_device(void) { +static void close_device(void) { switch(device_type) { #ifdef HAVE_TUNEMU case DEVICE_TYPE_TUNEMU: @@ -190,7 +203,7 @@ void close_device(void) { free(iface); } -bool read_packet(vpn_packet_t *packet) { +static bool read_packet(vpn_packet_t *packet) { int inlen; switch(device_type) { @@ -204,7 +217,7 @@ bool read_packet(vpn_packet_t *packet) { inlen = read(device_fd, packet->data + 14, MTU - 14); if(inlen <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, + logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -219,7 +232,7 @@ bool read_packet(vpn_packet_t *packet) { packet->data[13] = 0xDD; break; default: - ifdebug(TRAFFIC) logger(LOG_ERR, + logger(DEBUG_TRAFFIC, LOG_ERR, "Unknown IP version %d while reading packet from %s %s", packet->data[14] >> 4, device_info, device); return false; @@ -233,7 +246,7 @@ bool read_packet(vpn_packet_t *packet) { struct iovec vector[2] = {{&type, sizeof type}, {packet->data + 14, MTU - 14}}; if((inlen = readv(device_fd, vector, 2)) <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, + logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -250,7 +263,7 @@ bool read_packet(vpn_packet_t *packet) { break; default: - ifdebug(TRAFFIC) logger(LOG_ERR, + logger(DEBUG_TRAFFIC, LOG_ERR, "Unknown address family %x while reading packet from %s %s", ntohl(type), device_info, device); return false; @@ -262,7 +275,7 @@ bool read_packet(vpn_packet_t *packet) { case DEVICE_TYPE_TAP: if((inlen = read(device_fd, packet->data, MTU)) <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, + logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -276,20 +289,20 @@ bool read_packet(vpn_packet_t *packet) { device_total_in += packet->len; - ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", + logger(DEBUG_TRAFFIC, LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, device_info); return true; } -bool write_packet(vpn_packet_t *packet) { - ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s", +static bool write_packet(vpn_packet_t *packet) { + logger(DEBUG_TRAFFIC, LOG_DEBUG, "Writing packet of %d bytes to %s", packet->len, device_info); switch(device_type) { case DEVICE_TYPE_TUN: if(write(device_fd, packet->data + 14, packet->len - 14) < 0) { - logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, + logger(DEBUG_ALWAYS, LOG_ERR, "Error while writing to %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -310,14 +323,14 @@ bool write_packet(vpn_packet_t *packet) { type = htonl(AF_INET6); break; default: - ifdebug(TRAFFIC) logger(LOG_ERR, + logger(DEBUG_TRAFFIC, LOG_ERR, "Unknown address family %x while writing packet to %s %s", af, device_info, device); return false; } if(writev(device_fd, vector, 2) < 0) { - logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, + logger(DEBUG_ALWAYS, LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -326,7 +339,7 @@ bool write_packet(vpn_packet_t *packet) { case DEVICE_TYPE_TAP: if(write(device_fd, packet->data, packet->len) < 0) { - logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, + logger(DEBUG_ALWAYS, LOG_ERR, "Error while writing to %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -335,7 +348,7 @@ bool write_packet(vpn_packet_t *packet) { #ifdef HAVE_TUNEMU case DEVICE_TYPE_TUNEMU: if(tunemu_write(device_fd, packet->data + 14, packet->len - 14) < 0) { - logger(LOG_ERR, "Error while writing to %s %s: %s", device_info, + logger(DEBUG_ALWAYS, LOG_ERR, "Error while writing to %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -351,8 +364,16 @@ bool write_packet(vpn_packet_t *packet) { return true; } -void dump_device_stats(void) { - logger(LOG_DEBUG, "Statistics for %s %s:", device_info, device); - logger(LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in); - logger(LOG_DEBUG, " total bytes out: %10"PRIu64, device_total_out); +static void dump_device_stats(void) { + logger(DEBUG_ALWAYS, LOG_DEBUG, "Statistics for %s %s:", device_info, device); + logger(DEBUG_ALWAYS, LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in); + logger(DEBUG_ALWAYS, LOG_DEBUG, " total bytes out: %10"PRIu64, device_total_out); } + +const devops_t os_devops = { + .setup = setup_device, + .close = close_device, + .read = read_packet, + .write = write_packet, + .dump_stats = dump_device_stats, +};