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-rw-r--r--libc/inet/Makefile.in4
-rw-r--r--libc/inet/if_index.c218
-rw-r--r--libc/inet/if_nametoindex.c189
-rw-r--r--libc/inet/opensock.c40
4 files changed, 260 insertions, 191 deletions
diff --git a/libc/inet/Makefile.in b/libc/inet/Makefile.in
index cb844907b..f4b6d26c5 100644
--- a/libc/inet/Makefile.in
+++ b/libc/inet/Makefile.in
@@ -9,8 +9,8 @@
include $(top_srcdir)libc/inet/rpc/Makefile.in
CSRC:= getservice.c getproto.c hostid.c getnetent.c getnetbynm.c getnetbyad.c \
- inet_net.c ntop.c herror.c if_nametoindex.c gai_strerror.c getaddrinfo.c \
- in6_addr.c ether_addr.c ntohl.c
+ inet_net.c ntop.c herror.c if_index.c gai_strerror.c getaddrinfo.c \
+ in6_addr.c ether_addr.c ntohl.c opensock.c
MSRC1:= addr.c
MOBJ1:= inet_aton.o inet_addr.o inet_ntoa.o inet_makeaddr.o inet_lnaof.o \
diff --git a/libc/inet/if_index.c b/libc/inet/if_index.c
new file mode 100644
index 000000000..5837faa65
--- /dev/null
+++ b/libc/inet/if_index.c
@@ -0,0 +1,218 @@
+/* Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005
+ 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 strndup __strndup
+
+#define __FORCE_GLIBC
+#include <features.h>
+#define __USE_GNU
+#include <string.h>
+#include <alloca.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <net/if.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <libc-internal.h>
+
+extern int __opensock(void) attribute_hidden;
+
+unsigned int
+if_nametoindex(const char* ifname)
+{
+#ifndef SIOCGIFINDEX
+ __set_errno (ENOSYS);
+ return 0;
+#else
+ struct ifreq ifr;
+ int 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
+}
+
+void
+if_freenameindex (struct if_nameindex *ifn)
+{
+ struct if_nameindex *ptr = ifn;
+ while (ptr->if_name || ptr->if_index)
+ {
+ free (ptr->if_name);
+ ++ptr;
+ }
+ free (ifn);
+}
+
+struct if_nameindex *
+if_nameindex (void)
+{
+#ifndef SIOCGIFINDEX
+ __set_errno (ENOSYS);
+ return NULL;
+#else
+ int fd = __opensock ();
+ struct ifconf ifc;
+ unsigned int nifs, i;
+ int rq_len;
+ struct if_nameindex *idx = NULL;
+# define RQ_IFS 4
+
+ if (fd < 0)
+ return NULL;
+
+ 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. */
+ ifc.ifc_buf = alloca (rq_len);
+ ifc.ifc_len = rq_len;
+ while (1)
+ {
+ if (__ioctl (fd, SIOCGIFCONF, &ifc) < 0)
+ {
+ __close (fd);
+ return NULL;
+ }
+ if (ifc.ifc_len < rq_len)
+ break;
+
+ ifc.ifc_buf = extend_alloca (ifc.ifc_buf, rq_len, 2 * rq_len);
+ 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)
+{
+#if !defined SIOCGIFINDEX
+ __set_errno (ENOSYS);
+ return NULL;
+#else
+# ifdef SIOCGIFNAME
+ /* Use ioctl to avoid searching the list. */
+ struct ifreq ifr;
+ int fd;
+
+ fd = __opensock ();
+
+ if (fd < 0)
+ return NULL;
+
+ ifr.ifr_ifindex = ifindex;
+ if (__ioctl (fd, SIOCGIFNAME, &ifr) < 0)
+ {
+ int serrno = errno;
+ __close (fd);
+ if (serrno == ENODEV)
+ /* POSIX requires ENXIO. */
+ serrno = ENXIO;
+ __set_errno (serrno);
+ 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);
+
+ if (result == NULL)
+ __set_errno (ENXIO);
+ }
+ return result;
+# endif
+#endif
+}
+
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
-}
-
diff --git a/libc/inet/opensock.c b/libc/inet/opensock.c
new file mode 100644
index 000000000..a27141a16
--- /dev/null
+++ b/libc/inet/opensock.c
@@ -0,0 +1,40 @@
+/* Copyright (C) 1999, 2001, 2002 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. */
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <features.h>
+#include <libc-internal.h>
+
+/* Return a socket of any type. The socket can be used in subsequent
+ ioctl calls to talk to the kernel. */
+int attribute_hidden
+__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);
+}
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