X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=networking%2Finterface.c;h=b09148b279a0be25f9f11b04cf75e1e8bf2656fb;hb=12ff9dc71465cdbb9be7418e293a6d43fdb60cda;hp=f5937ef3fce6cabe222a5bc61ac6acdd80d02feb;hpb=9fe801e0d2a3a30855481d125980f7bbcd857920;p=oweals%2Fbusybox.git diff --git a/networking/interface.c b/networking/interface.c index f5937ef3f..b09148b27 100644 --- a/networking/interface.c +++ b/networking/interface.c @@ -1,3 +1,4 @@ +/* vi: set sw=4 ts=4: */ /* * stolen from net-tools-1.59 and stripped down for busybox by * Erik Andersen @@ -14,7 +15,6 @@ * that either displays or sets the characteristics of * one or more of the system's networking interfaces. * - * Version: $Id: interface.c,v 1.25 2004/08/26 21:45:21 andersen Exp $ * * Author: Fred N. van Kempen, * and others. Copyright 1993 MicroWalt Corporation @@ -31,21 +31,19 @@ * (default AF was wrong) */ -#include "inet_common.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include #include #include -#include "busybox.h" +#include "inet_common.h" +#include "libbb.h" + + +#if ENABLE_FEATURE_HWIB +/* #include */ +#undef INFINIBAND_ALEN +#define INFINIBAND_ALEN 20 +#endif -#ifdef CONFIG_FEATURE_IPV6 +#if ENABLE_FEATURE_IPV6 # define HAVE_AFINET6 1 #else # undef HAVE_AFINET6 @@ -54,7 +52,7 @@ #define _PATH_PROCNET_DEV "/proc/net/dev" #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6" -#if HAVE_AFINET6 +#ifdef HAVE_AFINET6 #ifndef _LINUX_IN6_H /* @@ -69,7 +67,7 @@ struct in6_ifreq { #endif -#endif /* HAVE_AFINET6 */ +#endif /* HAVE_AFINET6 */ /* Defines for glibc2.0 users. */ #ifndef SIOCSIFTXQLEN @@ -90,84 +88,150 @@ struct in6_ifreq { #define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */ #endif -/* This structure defines protocol families and their handlers. */ -struct aftype { - const char *name; - const char *title; - int af; - int alen; - char *(*print) (unsigned char *); - char *(*sprint) (struct sockaddr *, int numeric); - int (*input) (int type, char *bufp, struct sockaddr *); - void (*herror) (char *text); - int (*rprint) (int options); - int (*rinput) (int typ, int ext, char **argv); - - /* may modify src */ - int (*getmask) (char *src, struct sockaddr * mask, char *name); - - int fd; - char *flag_file; -}; - /* Display an Internet socket address. */ -static char *INET_sprint(struct sockaddr *sap, int numeric) +static const char* FAST_FUNC INET_sprint(struct sockaddr *sap, int numeric) { - static char buff[128]; + static char *buff; /* defaults to NULL */ + free(buff); if (sap->sa_family == 0xFFFF || sap->sa_family == 0) - return safe_strncpy(buff, "[NONE SET]", sizeof(buff)); + return "[NONE SET]"; + buff = INET_rresolve((struct sockaddr_in *) sap, numeric, 0xffffff00); + return buff; +} + +#ifdef UNUSED_AND_BUGGY +static int INET_getsock(char *bufp, struct sockaddr *sap) +{ + char *sp = bufp, *bp; + unsigned int i; + unsigned val; + struct sockaddr_in *sock_in; + + sock_in = (struct sockaddr_in *) sap; + sock_in->sin_family = AF_INET; + sock_in->sin_port = 0; + + val = 0; + bp = (char *) &val; + for (i = 0; i < sizeof(sock_in->sin_addr.s_addr); i++) { + *sp = toupper(*sp); + + if ((unsigned)(*sp - 'A') <= 5) + bp[i] |= (int) (*sp - ('A' - 10)); + else if (isdigit(*sp)) + bp[i] |= (int) (*sp - '0'); + else + return -1; + + bp[i] <<= 4; + sp++; + *sp = toupper(*sp); + + if ((unsigned)(*sp - 'A') <= 5) + bp[i] |= (int) (*sp - ('A' - 10)); + else if (isdigit(*sp)) + bp[i] |= (int) (*sp - '0'); + else + return -1; - if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap, - numeric, 0xffffff00) != 0) - return (NULL); + sp++; + } + sock_in->sin_addr.s_addr = htonl(val); - return (buff); + return (sp - bufp); +} +#endif + +static int FAST_FUNC INET_input(/*int type,*/ const char *bufp, struct sockaddr *sap) +{ + return INET_resolve(bufp, (struct sockaddr_in *) sap, 0); +/* + switch (type) { + case 1: + return (INET_getsock(bufp, sap)); + case 256: + return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1)); + default: + return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0)); + } +*/ } -static struct aftype inet_aftype = { - .name = "inet", - .title = "DARPA Internet", - .af = AF_INET, - .alen = 4, - .sprint = INET_sprint, - .fd = -1 +static const struct aftype inet_aftype = { + .name = "inet", + .title = "DARPA Internet", + .af = AF_INET, + .alen = 4, + .sprint = INET_sprint, + .input = INET_input, }; -#if HAVE_AFINET6 +#ifdef HAVE_AFINET6 /* Display an Internet socket address. */ /* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */ -static char *INET6_sprint(struct sockaddr *sap, int numeric) +static const char* FAST_FUNC INET6_sprint(struct sockaddr *sap, int numeric) { - static char buff[128]; + static char *buff; + free(buff); if (sap->sa_family == 0xFFFF || sap->sa_family == 0) - return safe_strncpy(buff, "[NONE SET]", sizeof(buff)); - if (INET6_rresolve - (buff, sizeof(buff), (struct sockaddr_in6 *) sap, numeric) != 0) - return safe_strncpy(buff, "[UNKNOWN]", sizeof(buff)); - return (buff); + return "[NONE SET]"; + buff = INET6_rresolve((struct sockaddr_in6 *) sap, numeric); + return buff; +} + +#ifdef UNUSED +static int INET6_getsock(char *bufp, struct sockaddr *sap) +{ + struct sockaddr_in6 *sin6; + + sin6 = (struct sockaddr_in6 *) sap; + sin6->sin6_family = AF_INET6; + sin6->sin6_port = 0; + + if (inet_pton(AF_INET6, bufp, sin6->sin6_addr.s6_addr) <= 0) + return -1; + + return 16; /* ?;) */ +} +#endif + +static int FAST_FUNC INET6_input(/*int type,*/ const char *bufp, struct sockaddr *sap) +{ + return INET6_resolve(bufp, (struct sockaddr_in6 *) sap); +/* + switch (type) { + case 1: + return (INET6_getsock(bufp, sap)); + default: + return (INET6_resolve(bufp, (struct sockaddr_in6 *) sap)); + } +*/ } -static struct aftype inet6_aftype = { - .name = "inet6", - .title = "IPv6", - .af = AF_INET6, - .alen = sizeof(struct in6_addr), - .sprint = INET6_sprint, - .fd = -1 +static const struct aftype inet6_aftype = { + .name = "inet6", + .title = "IPv6", + .af = AF_INET6, + .alen = sizeof(struct in6_addr), + .sprint = INET6_sprint, + .input = INET6_input, }; -#endif /* HAVE_AFINET6 */ +#endif /* HAVE_AFINET6 */ /* Display an UNSPEC address. */ -static char *UNSPEC_print(unsigned char *ptr) +static char* FAST_FUNC UNSPEC_print(unsigned char *ptr) { - static char buff[sizeof(struct sockaddr) * 3 + 1]; + static char *buff; + char *pos; unsigned int i; + if (!buff) + buff = xmalloc(sizeof(struct sockaddr) * 3 + 1); pos = buff; for (i = 0; i < sizeof(struct sockaddr); i++) { /* careful -- not every libc's sprintf returns # bytes written */ @@ -176,28 +240,29 @@ static char *UNSPEC_print(unsigned char *ptr) } /* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */ *--pos = '\0'; - return (buff); + return buff; } /* Display an UNSPEC socket address. */ -static char *UNSPEC_sprint(struct sockaddr *sap, int numeric) +static const char* FAST_FUNC UNSPEC_sprint(struct sockaddr *sap, int numeric UNUSED_PARAM) { - static char buf[64]; - if (sap->sa_family == 0xFFFF || sap->sa_family == 0) - return safe_strncpy(buf, "[NONE SET]", sizeof(buf)); - return (UNSPEC_print((unsigned char *)sap->sa_data)); + return "[NONE SET]"; + return UNSPEC_print((unsigned char *)sap->sa_data); } -static struct aftype unspec_aftype = { - "unspec", "UNSPEC", AF_UNSPEC, 0, - UNSPEC_print, UNSPEC_sprint, NULL, NULL, - NULL, +static const struct aftype unspec_aftype = { + .name = "unspec", + .title = "UNSPEC", + .af = AF_UNSPEC, + .alen = 0, + .print = UNSPEC_print, + .sprint = UNSPEC_sprint, }; -static struct aftype * const aftypes[] = { +static const struct aftype *const aftypes[] = { &inet_aftype, -#if HAVE_AFINET6 +#ifdef HAVE_AFINET6 &inet6_aftype, #endif &unspec_aftype, @@ -205,31 +270,31 @@ static struct aftype * const aftypes[] = { }; /* Check our protocol family table for this family. */ -static struct aftype *get_afntype(int af) +const struct aftype* FAST_FUNC get_aftype(const char *name) { - struct aftype * const *afp; + const struct aftype *const *afp; afp = aftypes; while (*afp != NULL) { - if ((*afp)->af == af) + if (!strcmp((*afp)->name, name)) return (*afp); afp++; } - return (NULL); + return NULL; } -/* Check our protocol family table for this family and return its socket */ -static int get_socket_for_af(int af) +/* Check our protocol family table for this family. */ +static const struct aftype *get_afntype(int af) { - struct aftype * const *afp; + const struct aftype *const *afp; afp = aftypes; while (*afp != NULL) { if ((*afp)->af == af) - return (*afp)->fd; + return *afp; afp++; } - return -1; + return NULL; } struct user_net_device_stats { @@ -263,87 +328,35 @@ struct user_net_device_stats { struct interface { struct interface *next, *prev; - char name[IFNAMSIZ]; /* interface name */ - short type; /* if type */ - short flags; /* various flags */ - int metric; /* routing metric */ - int mtu; /* MTU value */ - int tx_queue_len; /* transmit queue length */ - struct ifmap map; /* hardware setup */ - struct sockaddr addr; /* IP address */ - struct sockaddr dstaddr; /* P-P IP address */ - struct sockaddr broadaddr; /* IP broadcast address */ - struct sockaddr netmask; /* IP network mask */ + char name[IFNAMSIZ]; /* interface name */ + short type; /* if type */ + short flags; /* various flags */ + int metric; /* routing metric */ + int mtu; /* MTU value */ + int tx_queue_len; /* transmit queue length */ + struct ifmap map; /* hardware setup */ + struct sockaddr addr; /* IP address */ + struct sockaddr dstaddr; /* P-P IP address */ + struct sockaddr broadaddr; /* IP broadcast address */ + struct sockaddr netmask; /* IP network mask */ int has_ip; - char hwaddr[32]; /* HW address */ + char hwaddr[32]; /* HW address */ int statistics_valid; - struct user_net_device_stats stats; /* statistics */ - int keepalive; /* keepalive value for SLIP */ - int outfill; /* outfill value for SLIP */ + struct user_net_device_stats stats; /* statistics */ + int keepalive; /* keepalive value for SLIP */ + int outfill; /* outfill value for SLIP */ }; -int interface_opt_a = 0; /* show all interfaces */ +smallint interface_opt_a; /* show all interfaces */ static struct interface *int_list, *int_last; -static int skfd = -1; /* generic raw socket desc. */ -static int sockets_open(int family) -{ - struct aftype * const *aft; - int sfd = -1; - static int force = -1; - - if (force < 0) { - force = 0; - if (get_linux_version_code() < KERNEL_VERSION(2,1,0)) - force = 1; - if (access("/proc/net", R_OK)) - force = 1; - } - for (aft = aftypes; *aft; aft++) { - struct aftype *af = *aft; - int type = SOCK_DGRAM; - - if (af->af == AF_UNSPEC) - continue; - if (family && family != af->af) - continue; - if (af->fd != -1) { - sfd = af->fd; - continue; - } - /* Check some /proc file first to not stress kmod */ - if (!family && !force && af->flag_file) { - if (access(af->flag_file, R_OK)) - continue; - } - af->fd = socket(af->af, type, 0); - if (af->fd >= 0) - sfd = af->fd; - } - if (sfd < 0) { - bb_error_msg("No usable address families found."); - } - return sfd; -} - -#ifdef CONFIG_FEATURE_CLEAN_UP -static void sockets_close(void) -{ - struct aftype * const *aft; - for (aft = aftypes; *aft != NULL; aft++) { - struct aftype *af = *aft; - if( af->fd != -1 ) { - close(af->fd); - af->fd = -1; - } - } -} -#endif - +#if 0 /* like strcmp(), but knows about numbers */ +except that the freshly added calls to xatoul() brf on ethernet aliases with +uClibc with e.g.: ife->name='lo' name='eth0:1' static int nstrcmp(const char *a, const char *b) { const char *a_ptr = a; @@ -362,17 +375,18 @@ static int nstrcmp(const char *a, const char *b) } if (isdigit(*a) && isdigit(*b)) { - return atoi(a_ptr) > atoi(b_ptr) ? 1 : -1; + return xatoul(a_ptr) > xatoul(b_ptr) ? 1 : -1; } return *a - *b; } +#endif static struct interface *add_interface(char *name) { struct interface *ife, **nextp, *new; for (ife = int_last; ife; ife = ife->prev) { - int n = nstrcmp(ife->name, name); + int n = /*n*/strcmp(ife->name, name); if (n == 0) return ife; @@ -381,7 +395,7 @@ static struct interface *add_interface(char *name) } new = xzalloc(sizeof(*new)); - safe_strncpy(new->name, name, IFNAMSIZ); + strncpy(new->name, name, IFNAMSIZ); nextp = ife ? &ife->next : &int_list; new->prev = ife; new->next = *nextp; @@ -393,78 +407,30 @@ static struct interface *add_interface(char *name) return new; } - -static int if_readconf(void) -{ - int numreqs = 30; - struct ifconf ifc; - struct ifreq *ifr; - int n, err = -1; - int skfd2; - - /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets - (as of 2.1.128) */ - skfd2 = get_socket_for_af(AF_INET); - if (skfd2 < 0) { - bb_perror_msg(("warning: no inet socket available")); - /* Try to soldier on with whatever socket we can get hold of. */ - skfd2 = sockets_open(0); - if (skfd2 < 0) - return -1; - } - - ifc.ifc_buf = NULL; - for (;;) { - ifc.ifc_len = sizeof(struct ifreq) * numreqs; - ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len); - - if (ioctl(skfd2, SIOCGIFCONF, &ifc) < 0) { - perror("SIOCGIFCONF"); - goto out; - } - if (ifc.ifc_len == sizeof(struct ifreq) * numreqs) { - /* assume it overflowed and try again */ - numreqs += 10; - continue; - } - break; - } - - ifr = ifc.ifc_req; - for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) { - add_interface(ifr->ifr_name); - ifr++; - } - err = 0; - - out: - free(ifc.ifc_buf); - return err; -} - static char *get_name(char *name, char *p) { /* Extract from nul-terminated p where p matches : after leading whitespace. If match is not made, set name empty and return unchanged p */ - int namestart=0, nameend=0; + int namestart = 0, nameend = 0; + while (isspace(p[namestart])) namestart++; - nameend=namestart; - while (p[nameend] && p[nameend]!=':' && !isspace(p[nameend])) + nameend = namestart; + while (p[nameend] && p[nameend] != ':' && !isspace(p[nameend])) nameend++; - if (p[nameend]==':') { - if ((nameend-namestart)ifr_name); + ifr++; + } + err = 0; + + out: + close(skfd); + free(ifc.ifc_buf); + return err; +} + static int if_readlist_proc(char *target) { - static int proc_read; + static smallint proc_read; + FILE *fh; char buf[512]; struct interface *ife; @@ -554,9 +567,8 @@ static int if_readlist_proc(char *target) if (!target) proc_read = 1; - fh = fopen(_PATH_PROCNET_DEV, "r"); + fh = fopen_or_warn(_PATH_PROCNET_DEV, "r"); if (!fh) { - bb_perror_msg("Warning: cannot open %s. Limited output.", _PATH_PROCNET_DEV); return if_readconf(); } fgets(buf, sizeof buf, fh); /* eat line */ @@ -576,7 +588,7 @@ static int if_readlist_proc(char *target) break; } if (ferror(fh)) { - perror(_PATH_PROCNET_DEV); + bb_perror_msg(_PATH_PROCNET_DEV); err = -1; proc_read = 0; } @@ -587,115 +599,91 @@ static int if_readlist_proc(char *target) static int if_readlist(void) { int err = if_readlist_proc(NULL); - + /* Needed in order to get ethN:M aliases */ if (!err) err = if_readconf(); return err; } -static int for_all_interfaces(int (*doit) (struct interface *, void *), - void *cookie) -{ - struct interface *ife; - - if (!int_list && (if_readlist() < 0)) - return -1; - for (ife = int_list; ife; ife = ife->next) { - int err = doit(ife, cookie); - - if (err) - return err; - } - return 0; -} - /* Fetch the interface configuration from the kernel. */ static int if_fetch(struct interface *ife) { struct ifreq ifr; - int fd; char *ifname = ife->name; + int skfd; + + skfd = xsocket(AF_INET, SOCK_DGRAM, 0); - strcpy(ifr.ifr_name, ifname); - if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) - return (-1); + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) { + close(skfd); + return -1; + } ife->flags = ifr.ifr_flags; - strcpy(ifr.ifr_name, ifname); - if (ioctl(skfd, SIOCGIFHWADDR, &ifr) < 0) - memset(ife->hwaddr, 0, 32); - else + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + memset(ife->hwaddr, 0, 32); + if (ioctl(skfd, SIOCGIFHWADDR, &ifr) >= 0) memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8); ife->type = ifr.ifr_hwaddr.sa_family; - strcpy(ifr.ifr_name, ifname); - if (ioctl(skfd, SIOCGIFMETRIC, &ifr) < 0) - ife->metric = 0; - else + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + ife->metric = 0; + if (ioctl(skfd, SIOCGIFMETRIC, &ifr) >= 0) ife->metric = ifr.ifr_metric; - strcpy(ifr.ifr_name, ifname); - if (ioctl(skfd, SIOCGIFMTU, &ifr) < 0) - ife->mtu = 0; - else + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + ife->mtu = 0; + if (ioctl(skfd, SIOCGIFMTU, &ifr) >= 0) ife->mtu = ifr.ifr_mtu; + memset(&ife->map, 0, sizeof(struct ifmap)); #ifdef SIOCGIFMAP - strcpy(ifr.ifr_name, ifname); + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); if (ioctl(skfd, SIOCGIFMAP, &ifr) == 0) ife->map = ifr.ifr_map; - else #endif - memset(&ife->map, 0, sizeof(struct ifmap)); #ifdef HAVE_TXQUEUELEN - strcpy(ifr.ifr_name, ifname); - if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) < 0) - ife->tx_queue_len = -1; /* unknown value */ - else + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + ife->tx_queue_len = -1; /* unknown value */ + if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) >= 0) ife->tx_queue_len = ifr.ifr_qlen; #else ife->tx_queue_len = -1; /* unknown value */ #endif - /* IPv4 address? */ - fd = get_socket_for_af(AF_INET); - if (fd >= 0) { - strcpy(ifr.ifr_name, ifname); - ifr.ifr_addr.sa_family = AF_INET; - if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) { - ife->has_ip = 1; - ife->addr = ifr.ifr_addr; - strcpy(ifr.ifr_name, ifname); - if (ioctl(fd, SIOCGIFDSTADDR, &ifr) < 0) - memset(&ife->dstaddr, 0, sizeof(struct sockaddr)); - else - ife->dstaddr = ifr.ifr_dstaddr; - - strcpy(ifr.ifr_name, ifname); - if (ioctl(fd, SIOCGIFBRDADDR, &ifr) < 0) - memset(&ife->broadaddr, 0, sizeof(struct sockaddr)); - else - ife->broadaddr = ifr.ifr_broadaddr; - - strcpy(ifr.ifr_name, ifname); - if (ioctl(fd, SIOCGIFNETMASK, &ifr) < 0) - memset(&ife->netmask, 0, sizeof(struct sockaddr)); - else - ife->netmask = ifr.ifr_netmask; - } else - memset(&ife->addr, 0, sizeof(struct sockaddr)); + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + ifr.ifr_addr.sa_family = AF_INET; + memset(&ife->addr, 0, sizeof(struct sockaddr)); + if (ioctl(skfd, SIOCGIFADDR, &ifr) == 0) { + ife->has_ip = 1; + ife->addr = ifr.ifr_addr; + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + memset(&ife->dstaddr, 0, sizeof(struct sockaddr)); + if (ioctl(skfd, SIOCGIFDSTADDR, &ifr) >= 0) + ife->dstaddr = ifr.ifr_dstaddr; + + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + memset(&ife->broadaddr, 0, sizeof(struct sockaddr)); + if (ioctl(skfd, SIOCGIFBRDADDR, &ifr) >= 0) + ife->broadaddr = ifr.ifr_broadaddr; + + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + memset(&ife->netmask, 0, sizeof(struct sockaddr)); + if (ioctl(skfd, SIOCGIFNETMASK, &ifr) >= 0) + ife->netmask = ifr.ifr_netmask; } + close(skfd); return 0; } - static int do_if_fetch(struct interface *ife) { if (if_fetch(ife) < 0) { - char *errmsg; + const char *errmsg; if (errno == ENODEV) { /* Give better error message for this case. */ @@ -710,70 +698,147 @@ static int do_if_fetch(struct interface *ife) return 0; } -/* This structure defines hardware protocols and their handlers. */ -struct hwtype { - const char * const name; - const char *title; - int type; - int alen; - char *(*print) (unsigned char *); - int (*input) (char *, struct sockaddr *); - int (*activate) (int fd); - int suppress_null_addr; -}; - static const struct hwtype unspec_hwtype = { - "unspec", "UNSPEC", -1, 0, - UNSPEC_print, NULL, NULL + .name = "unspec", + .title = "UNSPEC", + .type = -1, + .print = UNSPEC_print }; static const struct hwtype loop_hwtype = { - "loop", "Local Loopback", ARPHRD_LOOPBACK, 0, - NULL, NULL, NULL + .name = "loop", + .title = "Local Loopback", + .type = ARPHRD_LOOPBACK }; #include -#if (__GLIBC__ >=2 && __GLIBC_MINOR >= 1) || defined(_NEWLIB_VERSION) +#if (defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1) || defined(_NEWLIB_VERSION) #include #else #include #endif /* Display an Ethernet address in readable format. */ -static char *pr_ether(unsigned char *ptr) +static char* FAST_FUNC ether_print(unsigned char *ptr) { - static char buff[64]; + static char *buff; - snprintf(buff, sizeof(buff), "%02X:%02X:%02X:%02X:%02X:%02X", + free(buff); + buff = xasprintf("%02X:%02X:%02X:%02X:%02X:%02X", (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377), (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377) ); - return (buff); + return buff; } +static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap); + static const struct hwtype ether_hwtype = { - "ether", "Ethernet", ARPHRD_ETHER, ETH_ALEN, - pr_ether, NULL /* UNUSED in_ether */ , NULL + .name = "ether", + .title = "Ethernet", + .type = ARPHRD_ETHER, + .alen = ETH_ALEN, + .print = ether_print, + .input = ether_input }; +static unsigned hexchar2int(char c) +{ + if (isdigit(c)) + return c - '0'; + c &= ~0x20; /* a -> A */ + if ((unsigned)(c - 'A') <= 5) + return c - ('A' - 10); + return ~0U; +} + +/* Input an Ethernet address and convert to binary. */ +static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap) +{ + unsigned char *ptr; + char c; + int i; + unsigned val; + + sap->sa_family = ether_hwtype.type; + ptr = (unsigned char*) sap->sa_data; + + i = 0; + while ((*bufp != '\0') && (i < ETH_ALEN)) { + val = hexchar2int(*bufp++) * 0x10; + if (val > 0xff) { + errno = EINVAL; + return -1; + } + c = *bufp; + if (c == ':' || c == 0) + val >>= 4; + else { + val |= hexchar2int(c); + if (val > 0xff) { + errno = EINVAL; + return -1; + } + } + if (c != 0) + bufp++; + *ptr++ = (unsigned char) val; + i++; + + /* We might get a semicolon here - not required. */ + if (*bufp == ':') { + bufp++; + } + } + return 0; +} + #include static const struct hwtype ppp_hwtype = { - "ppp", "Point-Point Protocol", ARPHRD_PPP, 0, - NULL, NULL, NULL /* UNUSED do_ppp */ , 0 + .name = "ppp", + .title = "Point-to-Point Protocol", + .type = ARPHRD_PPP +}; + +#if ENABLE_FEATURE_IPV6 +static const struct hwtype sit_hwtype = { + .name = "sit", + .title = "IPv6-in-IPv4", + .type = ARPHRD_SIT, + .print = UNSPEC_print, + .suppress_null_addr = 1 +}; +#endif +#if ENABLE_FEATURE_HWIB +static const struct hwtype ib_hwtype = { + .name = "infiniband", + .title = "InfiniBand", + .type = ARPHRD_INFINIBAND, + .alen = INFINIBAND_ALEN, + .print = UNSPEC_print, + .input = in_ib, }; +#endif + -static const struct hwtype * const hwtypes[] = { +static const struct hwtype *const hwtypes[] = { &loop_hwtype, ðer_hwtype, &ppp_hwtype, &unspec_hwtype, +#if ENABLE_FEATURE_IPV6 + &sit_hwtype, +#endif +#if ENABLE_FEATURE_HWIB + &ib_hwtype, +#endif NULL }; #ifdef IFF_PORTSEL -static const char * const if_port_text[] = { +static const char *const if_port_text[] = { /* Keep in step with */ "unknown", "10base2", @@ -787,23 +852,37 @@ static const char * const if_port_text[] = { #endif /* Check our hardware type table for this type. */ -static const struct hwtype *get_hwntype(int type) +const struct hwtype* FAST_FUNC get_hwtype(const char *name) { - const struct hwtype * const *hwp; + const struct hwtype *const *hwp; hwp = hwtypes; while (*hwp != NULL) { - if ((*hwp)->type == type) + if (!strcmp((*hwp)->name, name)) return (*hwp); hwp++; } - return (NULL); + return NULL; +} + +/* Check our hardware type table for this type. */ +const struct hwtype* FAST_FUNC get_hwntype(int type) +{ + const struct hwtype *const *hwp; + + hwp = hwtypes; + while (*hwp != NULL) { + if ((*hwp)->type == type) + return *hwp; + hwp++; + } + return NULL; } /* return 1 if address is all zeros */ static int hw_null_address(const struct hwtype *hw, void *ap) { - unsigned int i; + int i; unsigned char *address = (unsigned char *) ap; for (i = 0; i < hw->alen; i++) @@ -812,7 +891,7 @@ static int hw_null_address(const struct hwtype *hw, void *ap) return 1; } -static const char TRext[] = "\0\0\0Ki\0Mi\0Gi\0Ti"; +static const char TRext[] ALIGN1 = "\0\0\0Ki\0Mi\0Gi\0Ti"; static void print_bytes_scaled(unsigned long long ull, const char *end) { @@ -837,60 +916,91 @@ static void print_bytes_scaled(unsigned long long ull, const char *end) printf("X bytes:%llu (%llu.%u %sB)%s", ull, int_part, frac_part, ext, end); } -static const char * const ife_print_flags_strs[] = { - "UP ", - "BROADCAST ", - "DEBUG ", - "LOOPBACK ", - "POINTOPOINT ", - "NOTRAILERS ", - "RUNNING ", - "NOARP ", - "PROMISC ", - "ALLMULTI ", - "SLAVE ", - "MASTER ", - "MULTICAST ", -#ifdef HAVE_DYNAMIC - "DYNAMIC " -#endif -}; -static const unsigned short ife_print_flags_mask[] = { - IFF_UP, - IFF_BROADCAST, - IFF_DEBUG, - IFF_LOOPBACK, - IFF_POINTOPOINT, - IFF_NOTRAILERS, - IFF_RUNNING, - IFF_NOARP, - IFF_PROMISC, - IFF_ALLMULTI, - IFF_SLAVE, - IFF_MASTER, - IFF_MULTICAST, -#ifdef HAVE_DYNAMIC - IFF_DYNAMIC -#endif - 0 -}; +#ifdef HAVE_AFINET6 +#define IPV6_ADDR_ANY 0x0000U -static void ife_print(struct interface *ptr) +#define IPV6_ADDR_UNICAST 0x0001U +#define IPV6_ADDR_MULTICAST 0x0002U +#define IPV6_ADDR_ANYCAST 0x0004U + +#define IPV6_ADDR_LOOPBACK 0x0010U +#define IPV6_ADDR_LINKLOCAL 0x0020U +#define IPV6_ADDR_SITELOCAL 0x0040U + +#define IPV6_ADDR_COMPATv4 0x0080U + +#define IPV6_ADDR_SCOPE_MASK 0x00f0U + +#define IPV6_ADDR_MAPPED 0x1000U +#define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */ + + +static void ife_print6(struct interface *ptr) { - struct aftype *ap; - const struct hwtype *hw; - int hf; - int can_compress = 0; -#if HAVE_AFINET6 FILE *f; char addr6[40], devname[20]; struct sockaddr_in6 sap; int plen, scope, dad_status, if_idx; char addr6p[8][5]; + + f = fopen_for_read(_PATH_PROCNET_IFINET6); + if (f == NULL) + return; + + while (fscanf + (f, "%4s%4s%4s%4s%4s%4s%4s%4s %08x %02x %02x %02x %20s\n", + addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4], + addr6p[5], addr6p[6], addr6p[7], &if_idx, &plen, &scope, + &dad_status, devname) != EOF + ) { + if (!strcmp(devname, ptr->name)) { + sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s", + addr6p[0], addr6p[1], addr6p[2], addr6p[3], + addr6p[4], addr6p[5], addr6p[6], addr6p[7]); + inet_pton(AF_INET6, addr6, + (struct sockaddr *) &sap.sin6_addr); + sap.sin6_family = AF_INET6; + printf(" inet6 addr: %s/%d", + INET6_sprint((struct sockaddr *) &sap, 1), + plen); + printf(" Scope:"); + switch (scope & IPV6_ADDR_SCOPE_MASK) { + case 0: + puts("Global"); + break; + case IPV6_ADDR_LINKLOCAL: + puts("Link"); + break; + case IPV6_ADDR_SITELOCAL: + puts("Site"); + break; + case IPV6_ADDR_COMPATv4: + puts("Compat"); + break; + case IPV6_ADDR_LOOPBACK: + puts("Host"); + break; + default: + puts("Unknown"); + } + } + } + fclose(f); +} +#else +static void ife_print6(struct interface *ptr) {} #endif + +static void ife_print(struct interface *ptr) +{ + const struct aftype *ap; + const struct hwtype *hw; + int hf; + int can_compress = 0; + ap = get_afntype(ptr->addr.sa_family); if (ap == NULL) ap = get_afntype(0); @@ -907,9 +1017,11 @@ static void ife_print(struct interface *ptr) printf("%-9.9s Link encap:%s ", ptr->name, hw->title); /* For some hardware types (eg Ash, ATM) we don't print the hardware address if it's null. */ - if (hw->print != NULL && (!(hw_null_address(hw, ptr->hwaddr) && - hw->suppress_null_addr))) + if (hw->print != NULL + && !(hw_null_address(hw, ptr->hwaddr) && hw->suppress_null_addr) + ) { printf("HWaddr %s ", hw->print((unsigned char *)ptr->hwaddr)); + } #ifdef IFF_PORTSEL if (ptr->flags & IFF_PORTSEL) { printf("Media:%s", if_port_text[ptr->map.port] /* [0] */); @@ -917,7 +1029,7 @@ static void ife_print(struct interface *ptr) printf("(auto)"); } #endif - printf("\n"); + bb_putchar('\n'); if (ptr->has_ip) { printf(" %s addr:%s ", ap->name, @@ -931,67 +1043,7 @@ static void ife_print(struct interface *ptr) printf(" Mask:%s\n", ap->sprint(&ptr->netmask, 1)); } -#if HAVE_AFINET6 - -#define IPV6_ADDR_ANY 0x0000U - -#define IPV6_ADDR_UNICAST 0x0001U -#define IPV6_ADDR_MULTICAST 0x0002U -#define IPV6_ADDR_ANYCAST 0x0004U - -#define IPV6_ADDR_LOOPBACK 0x0010U -#define IPV6_ADDR_LINKLOCAL 0x0020U -#define IPV6_ADDR_SITELOCAL 0x0040U - -#define IPV6_ADDR_COMPATv4 0x0080U - -#define IPV6_ADDR_SCOPE_MASK 0x00f0U - -#define IPV6_ADDR_MAPPED 0x1000U -#define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */ - - if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) { - while (fscanf - (f, "%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %20s\n", - addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4], - addr6p[5], addr6p[6], addr6p[7], &if_idx, &plen, &scope, - &dad_status, devname) != EOF) { - if (!strcmp(devname, ptr->name)) { - sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s", - addr6p[0], addr6p[1], addr6p[2], addr6p[3], - addr6p[4], addr6p[5], addr6p[6], addr6p[7]); - inet_pton(AF_INET6, addr6, - (struct sockaddr *) &sap.sin6_addr); - sap.sin6_family = AF_INET6; - printf(" inet6 addr: %s/%d", - inet6_aftype.sprint((struct sockaddr *) &sap, 1), - plen); - printf(" Scope:"); - switch (scope & IPV6_ADDR_SCOPE_MASK) { - case 0: - printf("Global"); - break; - case IPV6_ADDR_LINKLOCAL: - printf("Link"); - break; - case IPV6_ADDR_SITELOCAL: - printf("Site"); - break; - case IPV6_ADDR_COMPATv4: - printf("Compat"); - break; - case IPV6_ADDR_LOOPBACK: - printf("Host"); - break; - default: - printf("Unknown"); - } - printf("\n"); - } - } - fclose(f); - } -#endif + ife_print6(ptr); printf(" "); /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */ @@ -999,12 +1051,51 @@ static void ife_print(struct interface *ptr) if (ptr->flags == 0) { printf("[NO FLAGS] "); } else { - int i = 0; + static const char ife_print_flags_strs[] ALIGN1 = + "UP\0" + "BROADCAST\0" + "DEBUG\0" + "LOOPBACK\0" + "POINTOPOINT\0" + "NOTRAILERS\0" + "RUNNING\0" + "NOARP\0" + "PROMISC\0" + "ALLMULTI\0" + "SLAVE\0" + "MASTER\0" + "MULTICAST\0" +#ifdef HAVE_DYNAMIC + "DYNAMIC\0" +#endif + ; + static const unsigned short ife_print_flags_mask[] ALIGN2 = { + IFF_UP, + IFF_BROADCAST, + IFF_DEBUG, + IFF_LOOPBACK, + IFF_POINTOPOINT, + IFF_NOTRAILERS, + IFF_RUNNING, + IFF_NOARP, + IFF_PROMISC, + IFF_ALLMULTI, + IFF_SLAVE, + IFF_MASTER, + IFF_MULTICAST +#ifdef HAVE_DYNAMIC + ,IFF_DYNAMIC +#endif + }; + const unsigned short *mask = ife_print_flags_mask; + const char *str = ife_print_flags_strs; do { - if (ptr->flags & ife_print_flags_mask[i]) { - printf(ife_print_flags_strs[i]); + if (ptr->flags & *mask) { + printf("%s ", str); } - } while (ife_print_flags_mask[++i]); + mask++; + str += strlen(str) + 1; + } while (*str); } /* DONT FORGET TO ADD THE FLAGS IN ife_print_short */ @@ -1013,7 +1104,7 @@ static void ife_print(struct interface *ptr) if (ptr->outfill || ptr->keepalive) printf(" Outfill:%d Keepalive:%d", ptr->outfill, ptr->keepalive); #endif - printf("\n"); + bb_putchar('\n'); /* If needed, display the interface statistics. */ @@ -1044,11 +1135,11 @@ static void ife_print(struct interface *ptr) printf("\n R"); print_bytes_scaled(ptr->stats.rx_bytes, " T"); print_bytes_scaled(ptr->stats.tx_bytes, "\n"); - } - if ((ptr->map.irq || ptr->map.mem_start || ptr->map.dma || - ptr->map.base_addr)) { + if (ptr->map.irq || ptr->map.mem_start + || ptr->map.dma || ptr->map.base_addr + ) { printf(" "); if (ptr->map.irq) printf("Interrupt:%d ", ptr->map.irq); @@ -1062,20 +1153,18 @@ static void ife_print(struct interface *ptr) } if (ptr->map.dma) printf("DMA chan:%x ", ptr->map.dma); - printf("\n"); + bb_putchar('\n'); } - printf("\n"); + bb_putchar('\n'); } - -static int do_if_print(struct interface *ife, void *cookie) +static int do_if_print(struct interface *ife) /*, int *opt_a)*/ { - int *opt_a = (int *) cookie; int res; res = do_if_fetch(ife); if (res >= 0) { - if ((ife->flags & IFF_UP) || *opt_a) + if ((ife->flags & IFF_UP) || interface_opt_a) ife_print(ife); } return res; @@ -1091,38 +1180,113 @@ static struct interface *lookup_interface(char *name) return ife; } +#ifdef UNUSED +static int for_all_interfaces(int (*doit) (struct interface *, void *), + void *cookie) +{ + struct interface *ife; + + if (!int_list && (if_readlist() < 0)) + return -1; + for (ife = int_list; ife; ife = ife->next) { + int err = doit(ife, cookie); + + if (err) + return err; + } + return 0; +} +#endif + /* for ipv4 add/del modes */ static int if_print(char *ifname) { + struct interface *ife; int res; if (!ifname) { - res = for_all_interfaces(do_if_print, &interface_opt_a); - } else { - struct interface *ife; - - ife = lookup_interface(ifname); - res = do_if_fetch(ife); - if (res >= 0) - ife_print(ife); + /*res = for_all_interfaces(do_if_print, &interface_opt_a);*/ + if (!int_list && (if_readlist() < 0)) + return -1; + for (ife = int_list; ife; ife = ife->next) { + int err = do_if_print(ife); /*, &interface_opt_a);*/ + if (err) + return err; + } + return 0; } + ife = lookup_interface(ifname); + res = do_if_fetch(ife); + if (res >= 0) + ife_print(ife); return res; } -int display_interfaces(char *ifname); -int display_interfaces(char *ifname) +#if ENABLE_FEATURE_HWIB +/* Input an Infiniband address and convert to binary. */ +int FAST_FUNC in_ib(const char *bufp, struct sockaddr *sap) { - int status; - - /* Create a channel to the NET kernel. */ - if ((skfd = sockets_open(0)) < 0) { - bb_perror_msg_and_die("socket"); + unsigned char *ptr; + char c; + const char *orig; + int i; + unsigned val; + + sap->sa_family = ib_hwtype.type; + ptr = (unsigned char *) sap->sa_data; + + i = 0; + orig = bufp; + while ((*bufp != '\0') && (i < INFINIBAND_ALEN)) { + val = 0; + c = *bufp++; + if (isdigit(c)) + val = c - '0'; + else if (c >= 'a' && c <= 'f') + val = c - 'a' + 10; + else if (c >= 'A' && c <= 'F') + val = c - 'A' + 10; + else { + errno = EINVAL; + return -1; + } + val <<= 4; + c = *bufp; + if (isdigit(c)) + val |= c - '0'; + else if (c >= 'a' && c <= 'f') + val |= c - 'a' + 10; + else if (c >= 'A' && c <= 'F') + val |= c - 'A' + 10; + else if (c == ':' || c == 0) + val >>= 4; + else { + errno = EINVAL; + return -1; + } + if (c != 0) + bufp++; + *ptr++ = (unsigned char) (val & 0377); + i++; + + /* We might get a semicolon here - not required. */ + if (*bufp == ':') { + bufp++; + } } +#ifdef DEBUG + fprintf(stderr, "in_ib(%s): %s\n", orig, UNSPEC_print(sap->sa_data)); +#endif + return 0; +} +#endif + + +int FAST_FUNC display_interfaces(char *ifname) +{ + int status; - /* Do we have to show the current setup? */ status = if_print(ifname); -#ifdef CONFIG_FEATURE_CLEAN_UP - sockets_close(); -#endif - exit(status < 0); + + return (status < 0); /* status < 0 == 1 -- error */ }