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authorMike Frysinger <vapier@gentoo.org>2006-01-06 03:24:31 +0000
committerMike Frysinger <vapier@gentoo.org>2006-01-06 03:24:31 +0000
commit4f0d889f74cd8ecf441ac8f5f719945b13fb5181 (patch)
tree8aeca7f71d8509934f0e89445ad5f71fd6255659 /libc/inet/if_nametoindex.c
parent1fffa01407fddb0166594d1bde4600cd6fa48900 (diff)
sync with glibc
Diffstat (limited to 'libc/inet/if_nametoindex.c')
-rw-r--r--libc/inet/if_nametoindex.c189
1 files changed, 0 insertions, 189 deletions
diff --git a/libc/inet/if_nametoindex.c b/libc/inet/if_nametoindex.c
deleted file mode 100644
index f3803e56b..000000000
--- a/libc/inet/if_nametoindex.c
+++ /dev/null
@@ -1,189 +0,0 @@
-/* Copyright (C) 1997,98,99,2000,02 Free Software Foundation, Inc.
- * This file is part of the GNU C Library.
- *
- * The GNU C Library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * The GNU C Library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with the GNU C Library; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307 USA.
- *
- * Reworked Dec 2002 by Erik Andersen <andersen@codepoet.org>
- */
-
-#define __FORCE_GLIBC
-#include <features.h>
-#include <string.h>
-#include <errno.h>
-#include <net/if.h>
-#include <sys/ioctl.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-static int __opensock(void)
-{
- int fd;
-#ifdef __UCLIBC_HAS_IPV6__
- fd=__socket(AF_INET6,SOCK_DGRAM,0);
- if (fd<0)
-#endif /* __UCLIBC_HAS_IPV6__ */
- fd=__socket(AF_INET,SOCK_DGRAM,0);
- return(fd);
-}
-
-unsigned int if_nametoindex(const char* ifname)
-{
-#ifndef SIOCGIFINDEX
- __set_errno (ENOSYS);
- return 0;
-#else
- int fd;
- struct ifreq ifr;
-
- fd = __opensock();
- if (fd < 0)
- return 0;
- __strncpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
- if (__ioctl(fd,SIOCGIFINDEX,&ifr) < 0) {
- int saved_errno = errno;
- __close(fd);
- if (saved_errno == EINVAL)
- __set_errno(ENOSYS);
- return 0;
- }
- __close(fd);
- return ifr.ifr_ifindex;
-
-#endif /* SIOCGIFINDEX */
-}
-
-void if_freenameindex (struct if_nameindex *ifn)
-{
- struct if_nameindex *ptr = ifn;
- while (ptr->if_name || ptr->if_index) {
- if (ptr->if_name) {
- free (ptr->if_name);
- }
- ++ptr;
- }
- free (ifn);
-}
-
-struct if_nameindex * if_nameindex (void)
-{
-#ifndef SIOCGIFINDEX
- __set_errno (ENOSYS);
- return NULL;
-#else
- int fd;
- struct ifconf ifc;
- unsigned int nifs, i;
- int rq_len;
- struct if_nameindex *idx = NULL;
-# define RQ_IFS 4
-
- fd = __opensock();
- if (fd < 0)
- return 0;
-
- ifc.ifc_buf = NULL;
-
- /* Guess on the correct buffer size... */
- rq_len = RQ_IFS * sizeof (struct ifreq);
-
- /* Read all the interfaces out of the kernel. */
- do {
- ifc.ifc_buf = realloc(ifc.ifc_buf, ifc.ifc_len = rq_len);
- if (ifc.ifc_buf == NULL || __ioctl(fd, SIOCGIFCONF, &ifc) < 0) {
- __close(fd);
- return NULL;
- }
- rq_len *= 2;
- } while (ifc.ifc_len == rq_len);
-
- nifs = ifc.ifc_len / sizeof(struct ifreq);
-
- idx = malloc ((nifs + 1) * sizeof(struct if_nameindex));
- if (idx == NULL) {
- __close(fd);
- __set_errno(ENOBUFS);
- return NULL;
- }
-
- for (i = 0; i < nifs; ++i) {
- struct ifreq *ifr = &ifc.ifc_req[i];
- idx[i].if_name = __strdup (ifr->ifr_name);
- if (idx[i].if_name == NULL || __ioctl(fd,SIOCGIFINDEX,ifr) < 0) {
- int saved_errno = errno;
- unsigned int j;
- for (j = 0; j < i; ++j)
- free (idx[j].if_name);
- free(idx);
- __close(fd);
- if (saved_errno == EINVAL)
- saved_errno = ENOSYS;
- else if (saved_errno == ENOMEM)
- saved_errno = ENOBUFS;
- __set_errno (saved_errno);
- return NULL;
- }
- idx[i].if_index = ifr->ifr_ifindex;
- }
-
- idx[i].if_index = 0;
- idx[i].if_name = NULL;
-
- __close(fd);
- return idx;
-#endif
-}
-
-char * if_indextoname (unsigned int ifindex, char *ifname)
-{
-#ifdef SIOCGIFNAME
- /* Use ioctl to avoid searching the list. */
- struct ifreq ifr;
- int fd, saved_errno;
-
- fd = __opensock ();
-
- if (fd < 0)
- return NULL;
-
- ifr.ifr_ifindex = ifindex;
- if (__ioctl (fd, SIOCGIFNAME, &ifr) < 0) {
- saved_errno = errno;
- __close (fd);
- __set_errno (saved_errno);
- return NULL;
- }
- __close (fd);
-
- return __strncpy (ifname, ifr.ifr_name, IFNAMSIZ);
-#else
- struct if_nameindex *idx;
- struct if_nameindex *p;
- char *result = NULL;
-
- idx = if_nameindex();
- if (idx != NULL) {
- for (p = idx; p->if_index || p->if_name; ++p) {
- if (p->if_index == ifindex) {
- result = __strncpy (ifname, p->if_name, IFNAMSIZ);
- break;
- }
- }
- if_freenameindex (idx);
- }
- return result;
-#endif
-}
-