X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=networking%2Fifconfig.c;h=b6604f5d15a0e4ff2bf1677f57208b187466afb7;hb=a38f9faa9fa230eb3753381c4f626acf029379fb;hp=9cdd41c3a82545b1001902a751a76a278d45159e;hpb=270c17c0e66ffe9fe0e47e891a583b5c6f8512ef;p=oweals%2Fbusybox.git diff --git a/networking/ifconfig.c b/networking/ifconfig.c index 9cdd41c3a..b6604f5d1 100644 --- a/networking/ifconfig.c +++ b/networking/ifconfig.c @@ -10,7 +10,7 @@ * Authors of the original ifconfig was: * Fred N. van Kempen, * - * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. + * Licensed under GPLv2 or later, see file LICENSE in this source tree. */ /* @@ -26,18 +26,34 @@ * IPV6 support added by Bart Visscher */ +//usage:#define ifconfig_trivial_usage +//usage: IF_FEATURE_IFCONFIG_STATUS("[-a]") " interface [address]" +//usage:#define ifconfig_full_usage "\n\n" +//usage: "Configure a network interface\n" +//usage: "\n" +//usage: IF_FEATURE_IPV6( +//usage: " [add ADDRESS[/PREFIXLEN]]\n") +//usage: IF_FEATURE_IPV6( +//usage: " [del ADDRESS[/PREFIXLEN]]\n") +//usage: " [[-]broadcast [ADDRESS]] [[-]pointopoint [ADDRESS]]\n" +//usage: " [netmask ADDRESS] [dstaddr ADDRESS]\n" +//usage: IF_FEATURE_IFCONFIG_SLIP( +//usage: " [outfill NN] [keepalive NN]\n") +//usage: " " IF_FEATURE_IFCONFIG_HW("[hw ether" IF_FEATURE_HWIB("|infiniband")" ADDRESS] ") "[metric NN] [mtu NN]\n" +//usage: " [[-]trailers] [[-]arp] [[-]allmulti]\n" +//usage: " [multicast] [[-]promisc] [txqueuelen NN] [[-]dynamic]\n" +//usage: IF_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ( +//usage: " [mem_start NN] [io_addr NN] [irq NN]\n") +//usage: " [up|down] ..." + +#include "libbb.h" +#include "inet_common.h" #include #include #include -#if defined(__GLIBC__) && __GLIBC__ >=2 && __GLIBC_MINOR__ >= 1 -#include -#include -#else -#include -#include +#ifdef HAVE_NET_ETHERNET_H +# include #endif -#include "inet_common.h" -#include "busybox.h" #if ENABLE_FEATURE_IFCONFIG_SLIP # include @@ -164,7 +180,7 @@ struct in6_ifreq { struct arg1opt { const char *name; - int selector; + unsigned short selector; unsigned short ifr_offset; }; @@ -183,76 +199,75 @@ struct options { #define ifreq_offsetof(x) offsetof(struct ifreq, x) static const struct arg1opt Arg1Opt[] = { - {"SIOCSIFMETRIC", SIOCSIFMETRIC, ifreq_offsetof(ifr_metric)}, - {"SIOCSIFMTU", SIOCSIFMTU, ifreq_offsetof(ifr_mtu)}, - {"SIOCSIFTXQLEN", SIOCSIFTXQLEN, ifreq_offsetof(ifr_qlen)}, - {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)}, - {"SIOCSIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask)}, - {"SIOCSIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr)}, + { "SIFMETRIC", SIOCSIFMETRIC, ifreq_offsetof(ifr_metric) }, + { "SIFMTU", SIOCSIFMTU, ifreq_offsetof(ifr_mtu) }, + { "SIFTXQLEN", SIOCSIFTXQLEN, ifreq_offsetof(ifr_qlen) }, + { "SIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr) }, + { "SIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask) }, + { "SIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr) }, #if ENABLE_FEATURE_IFCONFIG_HW - {"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)}, + { "SIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr) }, #endif - {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)}, + { "SIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr) }, #ifdef SIOCSKEEPALIVE - {"SIOCSKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data)}, + { "SKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data) }, #endif #ifdef SIOCSOUTFILL - {"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)}, + { "SOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data) }, #endif #if ENABLE_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ - {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start)}, - {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr)}, - {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq)}, + { "SIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start) }, + { "SIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr) }, + { "SIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq) }, #endif /* Last entry if for unmatched (possibly hostname) arg. */ #if ENABLE_FEATURE_IPV6 - {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */ - {"SIOCDIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */ + { "SIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr) }, /* IPv6 version ignores the offset */ + { "DIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr) }, /* IPv6 version ignores the offset */ #endif - {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, + { "SIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr) }, }; static const struct options OptArray[] = { - {"metric", N_ARG, ARG_METRIC, 0}, - {"mtu", N_ARG, ARG_MTU, 0}, - {"txqueuelen", N_ARG, ARG_TXQUEUELEN, 0}, - {"dstaddr", N_ARG, ARG_DSTADDR, 0}, - {"netmask", N_ARG, ARG_NETMASK, 0}, - {"broadcast", N_ARG | M_CLR, ARG_BROADCAST, IFF_BROADCAST}, + { "metric", N_ARG, ARG_METRIC, 0 }, + { "mtu", N_ARG, ARG_MTU, 0 }, + { "txqueuelen", N_ARG, ARG_TXQUEUELEN, 0 }, + { "dstaddr", N_ARG, ARG_DSTADDR, 0 }, + { "netmask", N_ARG, ARG_NETMASK, 0 }, + { "broadcast", N_ARG | M_CLR, ARG_BROADCAST, IFF_BROADCAST }, #if ENABLE_FEATURE_IFCONFIG_HW - {"hw", N_ARG, ARG_HW, 0}, + { "hw", N_ARG, ARG_HW, 0 }, #endif - {"pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT}, + { "pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT }, #ifdef SIOCSKEEPALIVE - {"keepalive", N_ARG, ARG_KEEPALIVE, 0}, + { "keepalive", N_ARG, ARG_KEEPALIVE, 0 }, #endif #ifdef SIOCSOUTFILL - {"outfill", N_ARG, ARG_OUTFILL, 0}, + { "outfill", N_ARG, ARG_OUTFILL, 0 }, #endif #if ENABLE_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ - {"mem_start", N_ARG, ARG_MEM_START, 0}, - {"io_addr", N_ARG, ARG_IO_ADDR, 0}, - {"irq", N_ARG, ARG_IRQ, 0}, + { "mem_start", N_ARG, ARG_MEM_START, 0 }, + { "io_addr", N_ARG, ARG_IO_ADDR, 0 }, + { "irq", N_ARG, ARG_IRQ, 0 }, #endif #if ENABLE_FEATURE_IPV6 - {"add", N_ARG, ARG_ADD_DEL, 0}, - {"del", N_ARG, ARG_ADD_DEL, 0}, -#endif - {"arp", N_CLR | M_SET, 0, IFF_NOARP}, - {"trailers", N_CLR | M_SET, 0, IFF_NOTRAILERS}, - {"promisc", N_SET | M_CLR, 0, IFF_PROMISC}, - {"multicast", N_SET | M_CLR, 0, IFF_MULTICAST}, - {"allmulti", N_SET | M_CLR, 0, IFF_ALLMULTI}, - {"dynamic", N_SET | M_CLR, 0, IFF_DYNAMIC}, - {"up", N_SET, 0, (IFF_UP | IFF_RUNNING)}, - {"down", N_CLR, 0, IFF_UP}, - {NULL, 0, ARG_HOSTNAME, (IFF_UP | IFF_RUNNING)} + { "add", N_ARG, ARG_ADD_DEL, 0 }, + { "del", N_ARG, ARG_ADD_DEL, 0 }, +#endif + { "arp", N_CLR | M_SET, 0, IFF_NOARP }, + { "trailers", N_CLR | M_SET, 0, IFF_NOTRAILERS }, + { "promisc", N_SET | M_CLR, 0, IFF_PROMISC }, + { "multicast", N_SET | M_CLR, 0, IFF_MULTICAST }, + { "allmulti", N_SET | M_CLR, 0, IFF_ALLMULTI }, + { "dynamic", N_SET | M_CLR, 0, IFF_DYNAMIC }, + { "up", N_SET, 0, (IFF_UP | IFF_RUNNING) }, + { "down", N_CLR, 0, IFF_UP }, + { NULL, 0, ARG_HOSTNAME, (IFF_UP | IFF_RUNNING) } }; /* * A couple of prototypes. */ - #if ENABLE_FEATURE_IFCONFIG_HW static int in_ether(const char *bufp, struct sockaddr *sap); #endif @@ -260,14 +275,11 @@ static int in_ether(const char *bufp, struct sockaddr *sap); /* * Our main function. */ - -int ifconfig_main(int argc, char **argv) +int ifconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int ifconfig_main(int argc UNUSED_PARAM, char **argv) { struct ifreq ifr; struct sockaddr_in sai; -#if ENABLE_FEATURE_IPV6 - struct sockaddr_in6 sai6; -#endif #if ENABLE_FEATURE_IFCONFIG_HW struct sockaddr sa; #endif @@ -295,19 +307,17 @@ int ifconfig_main(int argc, char **argv) /* skip argv[0] */ ++argv; - --argc; #if ENABLE_FEATURE_IFCONFIG_STATUS - if (argc > 0 && (argv[0][0] == '-' && argv[0][1] == 'a' && !argv[0][2])) { + if (argv[0] && (argv[0][0] == '-' && argv[0][1] == 'a' && !argv[0][2])) { interface_opt_a = 1; - --argc; ++argv; } #endif - if (argc <= 1) { + if (!argv[0] || !argv[1]) { /* one or no args */ #if ENABLE_FEATURE_IFCONFIG_STATUS - return display_interfaces(argc ? *argv : NULL); + return display_interfaces(argv[0] /* can be NULL */); #else bb_error_msg_and_die("no support for status display"); #endif @@ -317,7 +327,7 @@ int ifconfig_main(int argc, char **argv) sockfd = xsocket(AF_INET, SOCK_DGRAM, 0); /* get interface name */ - safe_strncpy(ifr.ifr_name, *argv, IFNAMSIZ); + strncpy_IFNAMSIZ(ifr.ifr_name, *argv); /* Process the remaining arguments. */ while (*++argv != (char *) NULL) { @@ -339,7 +349,7 @@ int ifconfig_main(int argc, char **argv) } /* We fell through, so treat as possible hostname. */ - a1op = Arg1Opt + (sizeof(Arg1Opt) / sizeof(Arg1Opt[0])) - 1; + a1op = Arg1Opt + ARRAY_SIZE(Arg1Opt) - 1; mask = op->arg_flags; goto HOSTNAME; @@ -376,7 +386,7 @@ int ifconfig_main(int argc, char **argv) #endif sai.sin_family = AF_INET; sai.sin_port = 0; - if (!strcmp(host, bb_str_default)) { + if (strcmp(host, "default") == 0) { /* Default is special, meaning 0.0.0.0. */ sai.sin_addr.s_addr = INADDR_ANY; } @@ -388,31 +398,34 @@ int ifconfig_main(int argc, char **argv) sai.sin_addr.s_addr = (~sai_netmask) | (sai_hostname & sai_netmask); } #endif + else { + len_and_sockaddr *lsa; + if (strcmp(host, "inet") == 0) + continue; /* compat stuff */ + lsa = xhost2sockaddr(host, 0); #if ENABLE_FEATURE_IPV6 - else if (inet_pton(AF_INET6, host, &sai6.sin6_addr) > 0) { - int sockfd6; - struct in6_ifreq ifr6; - - memcpy((char *) &ifr6.ifr6_addr, - (char *) &sai6.sin6_addr, - sizeof(struct in6_addr)); - - /* Create a channel to the NET kernel. */ - sockfd6 = xsocket(AF_INET6, SOCK_DGRAM, 0); - if (ioctl(sockfd6, SIOGIFINDEX, &ifr) < 0) - bb_perror_msg_and_die("SIOGIFINDEX"); - ifr6.ifr6_ifindex = ifr.ifr_ifindex; - ifr6.ifr6_prefixlen = prefix_len; - if (ioctl(sockfd6, a1op->selector, &ifr6) < 0) - bb_perror_msg_and_die(a1op->name); - continue; - } -#endif - else if (inet_aton(host, &sai.sin_addr) == 0) { - /* It's not a dotted quad. */ - struct hostent *hp = xgethostbyname(host); - memcpy((char *) &sai.sin_addr, (char *) hp->h_addr_list[0], - sizeof(struct in_addr)); + if (lsa->u.sa.sa_family == AF_INET6) { + int sockfd6; + struct in6_ifreq ifr6; + + memcpy((char *) &ifr6.ifr6_addr, + (char *) &(lsa->u.sin6.sin6_addr), + sizeof(struct in6_addr)); + + /* Create a channel to the NET kernel. */ + sockfd6 = xsocket(AF_INET6, SOCK_DGRAM, 0); + xioctl(sockfd6, SIOGIFINDEX, &ifr); + ifr6.ifr6_ifindex = ifr.ifr_ifindex; + ifr6.ifr6_prefixlen = prefix_len; + ioctl_or_perror_and_die(sockfd6, a1op->selector, &ifr6, "SIOC%s", a1op->name); + if (ENABLE_FEATURE_CLEAN_UP) + free(lsa); + continue; + } +#endif + sai.sin_addr = lsa->u.sin.sin_addr; + if (ENABLE_FEATURE_CLEAN_UP) + free(lsa); } #if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS if (mask & A_HOSTNAME) @@ -424,11 +437,13 @@ int ifconfig_main(int argc, char **argv) #if ENABLE_FEATURE_IFCONFIG_HW } else { /* A_CAST_HOST_COPY_IN_ETHER */ /* This is the "hw" arg case. */ - if (strcmp("ether", *argv) || !*++argv) + smalluint hw_class= index_in_substrings("ether\0" + IF_FEATURE_HWIB("infiniband\0"), *argv) + 1; + if (!hw_class || !*++argv) bb_show_usage(); /*safe_strncpy(host, *argv, sizeof(host));*/ host = *argv; - if (in_ether(host, &sa)) + if (hw_class == 1 ? in_ether(host, &sa) : in_ib(host, &sa)) bb_error_msg_and_die("invalid hw-addr %s", host); p = (char *) &sa; } @@ -441,8 +456,7 @@ int ifconfig_main(int argc, char **argv) p = ((char *)&ifr) + a1op->ifr_offset; #if ENABLE_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ if (mask & A_MAP_TYPE) { - if (ioctl(sockfd, SIOCGIFMAP, &ifr) < 0) - bb_perror_msg_and_die("SIOCGIFMAP"); + xioctl(sockfd, SIOCGIFMAP, &ifr); if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR) *((unsigned char *) p) = i; else if (mask & A_MAP_USHORT) @@ -457,8 +471,7 @@ int ifconfig_main(int argc, char **argv) *((int *) p) = i; } - if (ioctl(sockfd, a1op->selector, &ifr) < 0) - bb_perror_msg_and_die(a1op->name); + ioctl_or_perror_and_die(sockfd, a1op->selector, &ifr, "SIOC%s", a1op->name); #ifdef QUESTIONABLE_ALIAS_CASE if (mask & A_COLON_CHK) { /* @@ -483,15 +496,13 @@ int ifconfig_main(int argc, char **argv) mask = N_SET; } - if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) - bb_perror_msg_and_die("SIOCGIFFLAGS"); + xioctl(sockfd, SIOCGIFFLAGS, &ifr); selector = op->selector; if (mask & SET_MASK) ifr.ifr_flags |= selector; else ifr.ifr_flags &= ~selector; - if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) - bb_perror_msg_and_die("SIOCSIFFLAGS"); + xioctl(sockfd, SIOCSIFFLAGS, &ifr); } /* while () */ if (ENABLE_FEATURE_CLEAN_UP) @@ -509,7 +520,7 @@ static int in_ether(const char *bufp, struct sockaddr *sap) unsigned char c; sap->sa_family = ARPHRD_ETHER; - ptr = sap->sa_data; + ptr = (char *) sap->sa_data; i = 0; do {