diff options
Diffstat (limited to 'cpukit/libnetworking/libc/if_nameindex.c')
| -rw-r--r-- | cpukit/libnetworking/libc/if_nameindex.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/cpukit/libnetworking/libc/if_nameindex.c b/cpukit/libnetworking/libc/if_nameindex.c deleted file mode 100644 index 7c7777f543..0000000000 --- a/cpukit/libnetworking/libc/if_nameindex.c +++ /dev/null @@ -1,152 +0,0 @@ -#include <machine/rtems-bsd-user-space.h> - -/* $KAME: if_nameindex.c,v 1.8 2000/11/24 08:20:01 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_nameindex.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> - -/* - * From RFC 2553: - * - * 4.3 Return All Interface Names and Indexes - * - * The if_nameindex structure holds the information about a single - * interface and is defined as a result of including the <net/if.h> - * header. - * - * struct if_nameindex { - * unsigned int if_index; - * char *if_name; - * }; - * - * The final function returns an array of if_nameindex structures, one - * structure per interface. - * - * struct if_nameindex *if_nameindex(void); - * - * The end of the array of structures is indicated by a structure with - * an if_index of 0 and an if_name of NULL. The function returns a NULL - * pointer upon an error, and would set errno to the appropriate value. - * - * The memory used for this array of structures along with the interface - * names pointed to by the if_name members is obtained dynamically. - * This memory is freed by the next function. - * - * 4.4. Free Memory - * - * The following function frees the dynamic memory that was allocated by - * if_nameindex(). - * - * #include <net/if.h> - * - * void if_freenameindex(struct if_nameindex *ptr); - * - * The argument to this function must be a pointer that was returned by - * if_nameindex(). - */ - -struct if_nameindex * -if_nameindex(void) -{ - struct ifaddrs *ifaddrs, *ifa; - unsigned int ni; - int nbytes; - struct if_nameindex *ifni, *ifni2; - char *cp; - - if (getifaddrs(&ifaddrs) < 0) - return(NULL); - - /* - * First, find out how many interfaces there are, and how - * much space we need for the string names. - */ - ni = 0; - nbytes = 0; - for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) { - if (ifa->ifa_addr && - ifa->ifa_addr->sa_family == AF_LINK) { - nbytes += strlen(ifa->ifa_name) + 1; - ni++; - } - } - - /* - * Next, allocate a chunk of memory, use the first part - * for the array of structures, and the last part for - * the strings. - */ - cp = malloc((ni + 1) * sizeof(struct if_nameindex) + nbytes); - ifni = (struct if_nameindex *)cp; - if (ifni == NULL) - goto out; - cp += (ni + 1) * sizeof(struct if_nameindex); - - /* - * Now just loop through the list of interfaces again, - * filling in the if_nameindex array and making copies - * of all the strings. - */ - ifni2 = ifni; - for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) { - if (ifa->ifa_addr && - ifa->ifa_addr->sa_family == AF_LINK) { - ifni2->if_index = - ((struct sockaddr_dl*)ifa->ifa_addr)->sdl_index; - ifni2->if_name = cp; - strcpy(cp, ifa->ifa_name); - ifni2++; - cp += strlen(cp) + 1; - } - } - /* - * Finally, don't forget to terminate the array. - */ - ifni2->if_index = 0; - ifni2->if_name = NULL; -out: - freeifaddrs(ifaddrs); - return(ifni); -} - -void -if_freenameindex(struct if_nameindex *ptr) -{ - free(ptr); -} |