diff options
Diffstat (limited to 'cpukit/libnetworking/libc/if_indextoname.c')
| -rw-r--r-- | cpukit/libnetworking/libc/if_indextoname.c | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/cpukit/libnetworking/libc/if_indextoname.c b/cpukit/libnetworking/libc/if_indextoname.c deleted file mode 100644 index 467c2eb1e5..0000000000 --- a/cpukit/libnetworking/libc/if_indextoname.c +++ /dev/null @@ -1,93 +0,0 @@ -#include <machine/rtems-bsd-user-space.h> - -/* $KAME: if_indextoname.c,v 1.7 2000/11/08 03:09:30 itojun Exp $ */ - -/*- - * Copyright (c) 1997, 2000 - * Berkeley Software Design, Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * BSDI Id: if_indextoname.c,v 2.3 2000/04/17 22:38:05 dab Exp - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <sys/cdefs.h> - -#include <sys/types.h> -#include <sys/socket.h> -#include <net/if_dl.h> -#include <net/if.h> -#include <ifaddrs.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> - -/* - * From RFC 2533: - * - * The second function maps an interface index into its corresponding - * name. - * - * #include <net/if.h> - * - * char *if_indextoname(unsigned int ifindex, char *ifname); - * - * The ifname argument must point to a buffer of at least IF_NAMESIZE - * bytes into which the interface name corresponding to the specified - * index is returned. (IF_NAMESIZE is also defined in <net/if.h> and - * its value includes a terminating null byte at the end of the - * interface name.) This pointer is also the return value of the - * function. If there is no interface corresponding to the specified - * index, NULL is returned, and errno is set to ENXIO, if there was a - * system error (such as running out of memory), if_indextoname returns - * NULL and errno would be set to the proper value (e.g., ENOMEM). - */ - -char * -if_indextoname(unsigned int ifindex, char *ifname) -{ - struct ifaddrs *ifaddrs, *ifa; - int error = 0; - - if (getifaddrs(&ifaddrs) < 0) - return(NULL); /* getifaddrs properly set errno */ - - for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) { - if (ifa->ifa_addr && - ifa->ifa_addr->sa_family == AF_LINK && - ifindex == ((struct sockaddr_dl*)ifa->ifa_addr)->sdl_index) - break; - } - - if (ifa == NULL) { - error = ENXIO; - ifname = NULL; - } - else - strncpy(ifname, ifa->ifa_name, IFNAMSIZ); - - freeifaddrs(ifaddrs); - - errno = error; - return(ifname); -} |