diff options
Diffstat (limited to 'networking/ifconfig.c')
| -rw-r--r-- | networking/ifconfig.c | 177 |
1 files changed, 91 insertions, 86 deletions
diff --git a/networking/ifconfig.c b/networking/ifconfig.c index 3ada4f1..513f176 100644 --- a/networking/ifconfig.c +++ b/networking/ifconfig.c @@ -15,7 +15,7 @@ * Foundation; either version 2 of the License, or (at * your option) any later version. * - * $Id: ifconfig.c,v 1.18 2002/07/11 11:11:52 andersen Exp $ + * $Id: ifconfig.c,v 1.19 2002/08/22 18:22:10 bug1 Exp $ * */ @@ -34,9 +34,9 @@ #include <stdio.h> #include <stdlib.h> -#include <string.h> // strcmp and friends -#include <ctype.h> // isdigit and friends -#include <stddef.h> /* offsetof */ +#include <string.h> /* strcmp and friends */ +#include <ctype.h> /* isdigit and friends */ +#include <stddef.h> /* offsetof */ #include <sys/ioctl.h> #include <net/if_arp.h> #include <netinet/in.h> @@ -65,14 +65,14 @@ #endif #ifndef IFF_DYNAMIC -#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */ +#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */ #endif #if CONFIG_FEATURE_IPV6 struct in6_ifreq { - struct in6_addr ifr6_addr; - uint32_t ifr6_prefixlen; - int ifr6_ifindex; + struct in6_addr ifr6_addr; + uint32_t ifr6_prefixlen; + int ifr6_ifindex; }; #endif @@ -177,70 +177,70 @@ 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)}, + {"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)}, #ifdef CONFIG_FEATURE_IFCONFIG_HW - {"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)}, + {"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)}, #endif {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)}, #ifdef SIOCSKEEPALIVE {"SIOCSKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data)}, #endif #ifdef SIOCSOUTFILL - {"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)}, + {"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)}, #endif #ifdef CONFIG_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)}, + {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start)}, + {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr)}, + {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq)}, #endif /* Last entry if for unmatched (possibly hostname) arg. */ #if CONFIG_FEATURE_IPV6 - {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */ - {"SIOCDIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */ + {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */ + {"SIOCDIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */ #endif - {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, + {"SIOCSIFADDR", 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}, #ifdef CONFIG_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 #ifdef CONFIG_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 CONFIG_FEATURE_IPV6 - {"add", N_ARG, ARG_ADD_DEL, 0}, - {"del", N_ARG, ARG_ADD_DEL, 0}, + {"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)} + {"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)} }; /* @@ -264,6 +264,7 @@ int ifconfig_main(int argc, char **argv) { struct ifreq ifr; struct sockaddr_in sai; + #if CONFIG_FEATURE_IPV6 struct sockaddr_in6 sai6; #endif @@ -272,7 +273,7 @@ int ifconfig_main(int argc, char **argv) #endif const struct arg1opt *a1op; const struct options *op; - int sockfd; /* socket fd we use to manipulate stuff with */ + int sockfd; /* socket fd we use to manipulate stuff with */ int goterr; int selector; char *p; @@ -288,18 +289,19 @@ int ifconfig_main(int argc, char **argv) --argc; #ifdef CONFIG_FEATURE_IFCONFIG_STATUS - if ((argc > 0) && (strcmp(*argv,"-a") == 0)) { + if ((argc > 0) && (strcmp(*argv, "-a") == 0)) { interface_opt_a = 1; --argc; ++argv; } #endif - if(argc <= 1) { + if (argc <= 1) { #ifdef CONFIG_FEATURE_IFCONFIG_STATUS return display_interfaces(argc ? *argv : NULL); #else - error_msg_and_die( "ifconfig was not compiled with interface status display support."); + error_msg_and_die + ("ifconfig was not compiled with interface status display support."); #endif } @@ -315,14 +317,14 @@ int ifconfig_main(int argc, char **argv) while (*++argv != (char *) NULL) { p = *argv; mask = N_MASK; - if (*p == '-') { /* If the arg starts with '-'... */ - ++p; /* advance past it and */ - mask = M_MASK; /* set the appropriate mask. */ + if (*p == '-') { /* If the arg starts with '-'... */ + ++p; /* advance past it and */ + mask = M_MASK; /* set the appropriate mask. */ } - for (op = OptArray ; op->name ; op++) { /* Find table entry. */ - if (strcmp(p,op->name) == 0) { /* If name matches... */ - if ((mask &= op->flags)) { /* set the mask and go. */ - goto FOUND_ARG;; + for (op = OptArray; op->name; op++) { /* Find table entry. */ + if (strcmp(p, op->name) == 0) { /* If name matches... */ + if ((mask &= op->flags)) { /* set the mask and go. */ + goto FOUND_ARG;; } /* If we get here, there was a valid arg with an */ /* invalid '-' prefix. */ @@ -330,13 +332,13 @@ int ifconfig_main(int argc, char **argv) goto LOOP; } } - + /* We fell through, so treat as possible hostname. */ a1op = Arg1Opt + (sizeof(Arg1Opt) / sizeof(Arg1Opt[0])) - 1; mask = op->arg_flags; goto HOSTNAME; - FOUND_ARG: + FOUND_ARG: if (mask & ARG_MASK) { mask = op->arg_flags; a1op = Arg1Opt + (op - OptArray); @@ -348,10 +350,10 @@ int ifconfig_main(int argc, char **argv) show_usage(); } else { --argv; - mask &= A_SET_AFTER; /* just for broadcast */ + mask &= A_SET_AFTER; /* just for broadcast */ } - } else { /* got an arg so process it */ - HOSTNAME: + } else { /* got an arg so process it */ + HOSTNAME: did_flags |= (mask & A_NETMASK); if (mask & A_CAST_HOST_COPY) { #ifdef CONFIG_FEATURE_IFCONFIG_HW @@ -359,7 +361,7 @@ int ifconfig_main(int argc, char **argv) #endif #if CONFIG_FEATURE_IPV6 char *prefix; - int prefix_len=0; + int prefix_len = 0; #endif safe_strncpy(host, *argv, (sizeof host)); @@ -381,21 +383,24 @@ int ifconfig_main(int argc, char **argv) sai.sin_addr.s_addr = INADDR_ANY; #if CONFIG_FEATURE_IPV6 } else - if (inet_pton(AF_INET6, host, &sai6.sin6_addr) > 0) { + 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)); + + memcpy((char *) &ifr6.ifr6_addr, + (char *) &sai6.sin6_addr, + sizeof(struct in6_addr)); /* Create a channel to the NET kernel. */ - if ((sockfd6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { + if ((sockfd6 = + socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { perror_msg_and_die("socket6"); } if (ioctl(sockfd6, SIOGIFINDEX, &ifr) < 0) { perror("SIOGIFINDEX"); ++goterr; - continue; + continue; } ifr6.ifr6_ifindex = ifr.ifr_ifindex; ifr6.ifr6_prefixlen = prefix_len; @@ -412,7 +417,7 @@ int ifconfig_main(int argc, char **argv) } p = (char *) &sai; #ifdef CONFIG_FEATURE_IFCONFIG_HW - } else { /* A_CAST_HOST_COPY_IN_ETHER */ + } else { /* A_CAST_HOST_COPY_IN_ETHER */ /* This is the "hw" arg case. */ if (strcmp("ether", *argv) || (*++argv == NULL)) { show_usage(); @@ -426,11 +431,12 @@ int ifconfig_main(int argc, char **argv) p = (char *) &sa; } #endif - memcpy((((char *)(&ifr)) + a1op->ifr_offset), + memcpy((((char *) (&ifr)) + a1op->ifr_offset), p, sizeof(struct sockaddr)); } else { - unsigned int i = strtoul(*argv,NULL,0); - p = ((char *)(&ifr)) + a1op->ifr_offset; + unsigned int i = strtoul(*argv, NULL, 0); + + p = ((char *) (&ifr)) + a1op->ifr_offset; #ifdef CONFIG_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ if (mask & A_MAP_TYPE) { if (ioctl(sockfd, SIOCGIFMAP, &ifr) < 0) { @@ -448,17 +454,16 @@ int ifconfig_main(int argc, char **argv) #endif if (mask & A_CAST_CHAR_PTR) { *((caddr_t *) p) = (caddr_t) i; - } else { /* A_CAST_INT */ + } else { /* A_CAST_INT */ *((int *) p) = i; } } - + if (ioctl(sockfd, a1op->selector, &ifr) < 0) { perror(a1op->name); ++goterr; continue; } - #ifdef QUESTIONABLE_ALIAS_CASE if (mask & A_COLON_CHK) { /* @@ -470,12 +475,13 @@ int ifconfig_main(int argc, char **argv) */ char *ptr; short int found_colon = 0; - for (ptr = ifr.ifr_name; *ptr; ptr++ ) { + + for (ptr = ifr.ifr_name; *ptr; ptr++) { if (*ptr == ':') { found_colon++; } } - + if (found_colon && *(ptr - 1) == '-') { continue; } @@ -489,7 +495,7 @@ int ifconfig_main(int argc, char **argv) } if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) { - perror("SIOCGIFFLAGS"); + perror("SIOCGIFFLAGS"); ++goterr; } else { selector = op->selector; @@ -499,31 +505,30 @@ int ifconfig_main(int argc, char **argv) ifr.ifr_flags &= ~selector; } if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) { - perror("SIOCSIFFLAGS"); + perror("SIOCSIFFLAGS"); ++goterr; } } - LOOP: + LOOP: continue; - } /* end of while-loop */ + } /* end of while-loop */ return goterr; } #ifdef CONFIG_FEATURE_IFCONFIG_HW /* Input an Ethernet address and convert to binary. */ -static int -in_ether(char *bufp, struct sockaddr *sap) +static int in_ether(char *bufp, struct sockaddr *sap) { unsigned char *ptr; int i, j; unsigned char val; unsigned char c; - + sap->sa_family = ARPHRD_ETHER; ptr = sap->sa_data; - - for (i = 0 ; i < ETH_ALEN ; i++) { + + for (i = 0; i < ETH_ALEN; i++) { val = 0; /* We might get a semicolon here - not required. */ @@ -531,7 +536,7 @@ in_ether(char *bufp, struct sockaddr *sap) bufp++; } - for (j=0 ; j<2 ; j++) { + for (j = 0; j < 2; j++) { c = *bufp; if (c >= '0' && c <= '9') { c -= '0'; @@ -551,6 +556,6 @@ in_ether(char *bufp, struct sockaddr *sap) *ptr++ = val; } - return (int) (*bufp); /* Error if we don't end at end of string. */ + return (int) (*bufp); /* Error if we don't end at end of string. */ } #endif |