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authorRoland McGrath <roland@hack.frob.com>2013-08-27 10:42:52 -0700
committerRoland McGrath <roland@hack.frob.com>2013-08-27 10:42:52 -0700
commit5d1f0a09f3634b29d9cbbd7c7337d546502363cb (patch)
tree4b5a365a903adfad0f1df3d7064998cd71ccb477 /inet
parent6fcf28b352c435ee3d1a975619c5ae31923c44eb (diff)
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True stub __ifreq.
Diffstat (limited to 'inet')
-rw-r--r--inet/ifreq.c61
1 files changed, 4 insertions, 57 deletions
diff --git a/inet/ifreq.c b/inet/ifreq.c
index 2db6d0c..d94d339 100644
--- a/inet/ifreq.c
+++ b/inet/ifreq.c
@@ -1,6 +1,6 @@
-/* Copyright (C) 1999-2013 Free Software Foundation, Inc.
+/* Collect network interface list. Stub version.
+ Copyright (C) 2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
- Contributed by Andreas Jaeger <aj@suse.de>.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -18,62 +18,9 @@
#include "ifreq.h"
-
void
__ifreq (struct ifreq **ifreqs, int *num_ifs, int sockfd)
{
- int fd = sockfd;
- struct ifconf ifc;
- int rq_len;
- int nifs;
-# define RQ_IFS 4
-
- if (fd < 0)
- fd = __opensock ();
- if (fd < 0)
- {
- *num_ifs = 0;
- *ifreqs = NULL;
- return;
- }
-
- ifc.ifc_buf = NULL;
- rq_len = RQ_IFS * sizeof (struct ifreq) / 2; /* Doubled in the loop. */
- do
- {
- ifc.ifc_len = rq_len *= 2;
- void *newp = realloc (ifc.ifc_buf, ifc.ifc_len);
- if (newp == NULL || __ioctl (fd, SIOCGIFCONF, &ifc) < 0)
- {
- free (ifc.ifc_buf);
-
- if (fd != sockfd)
- __close (fd);
- *num_ifs = 0;
- *ifreqs = NULL;
- return;
- }
- ifc.ifc_buf = newp;
- }
- while (rq_len < sizeof (struct ifreq) + ifc.ifc_len);
-
- if (fd != sockfd)
- __close (fd);
-
-#ifdef _HAVE_SA_LEN
- struct ifreq *ifr = *ifreqs;
- nifs = 0;
- while ((char *) ifr < ifc.ifc_buf + ifc.ifc_len)
- {
- ++nifs;
- ifr = __if_nextreq (ifr);
- if (ifr == NULL)
- break;
- }
-#else
- nifs = ifc.ifc_len / sizeof (struct ifreq);
-#endif
-
- *num_ifs = nifs;
- *ifreqs = realloc (ifc.ifc_buf, nifs * sizeof (struct ifreq));
+ *num_ifs = 0;
+ *ifreqs = NULL;
}