tftpd: options -c (allow _new_ files to be uploaded) and -u USER
[oweals/busybox.git] / networking / ifconfig.c
index 3dcc902ca6b50b5cafc7a5086acd15d4014645c7..fcbeb24202c5f8a38cb4814a22c83ac8cd14eb51 100644 (file)
@@ -37,7 +37,7 @@
 #include <netinet/if_ether.h>
 #endif
 #include "inet_common.h"
-#include "busybox.h"
+#include "libbb.h"
 
 #if ENABLE_FEATURE_IFCONFIG_SLIP
 # include <net/if_slip.h>
@@ -164,7 +164,7 @@ struct in6_ifreq {
 
 struct arg1opt {
        const char *name;
-       int selector;
+       unsigned short selector;
        unsigned short ifr_offset;
 };
 
@@ -183,70 +183,70 @@ 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)},
-       {"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) }
 };
 
 /*
@@ -261,7 +261,7 @@ 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, char **argv)
 {
        struct ifreq ifr;
@@ -337,7 +337,7 @@ 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;
 
@@ -392,28 +392,26 @@ int ifconfig_main(int argc, char **argv)
                                                                continue; /* compat stuff */
                                                        lsa = xhost2sockaddr(host, 0);
 #if ENABLE_FEATURE_IPV6
-                                                       if (lsa->sa.sa_family == AF_INET6) {
+                                                       if (lsa->u.sa.sa_family == AF_INET6) {
                                                                int sockfd6;
                                                                struct in6_ifreq ifr6;
 
                                                                memcpy((char *) &ifr6.ifr6_addr,
-                                                                               (char *) &(lsa->sin6.sin6_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);
-                                                               if (ioctl(sockfd6, SIOGIFINDEX, &ifr) < 0)
-                                                                       bb_perror_msg_and_die("SIOGIFINDEX");
+                                                               xioctl(sockfd6, SIOGIFINDEX, &ifr);
                                                                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);
+                                                               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->sin.sin_addr;
+                                                       sai.sin_addr = lsa->u.sin.sin_addr;
                                                        if (ENABLE_FEATURE_CLEAN_UP)
                                                                free(lsa);
                                                }
@@ -444,8 +442,7 @@ 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)
@@ -460,8 +457,7 @@ 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) {
                                        /*
@@ -486,15 +482,13 @@ 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)