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Linux getifaddrs might return entries with ->ifa_addr being NULL.

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This commit is contained in:
Ulrich Drepper 2010-10-11 09:38:00 -04:00
parent 9ff8d36f27
commit 1751705d1c
3 changed files with 15 additions and 6 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2010-10-11 Ulrich Drepper <drepper@gmail.com>
[BZ #12093]
* sysdeps/unix/sysv/linux/check_pf.c (__check_pf): ->ifa_addr might
be NULL.
2010-10-07 Jakub Jelinek <jakub@redhat.com>
[BZ #3268]

2
NEWS
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@ -10,7 +10,7 @@ Version 2.13
* The following bugs are resolved with this release:
3268, 7066, 10851, 11611, 11640, 11701, 11840, 11856, 11883, 11903, 11904,
11968, 11979, 12005, 12037, 12067, 12077, 12092, 12107
11968, 11979, 12005, 12037, 12067, 12077, 12092, 12093, 12107
* New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark

13
sysdeps/unix/sysv/linux/check_pf.c
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@ -1,5 +1,5 @@
/* Determine protocol families for which interfaces exist. Linux version.
Copyright (C) 2003, 2006, 2007, 2008 Free Software Foundation, Inc.
Copyright (C) 2003, 2006, 2007, 2008, 2010 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
@ -304,10 +304,13 @@ __check_pf (bool *seen_ipv4, bool *seen_ipv6,
struct ifaddrs *runp;
for (runp = ifa; runp != NULL; runp = runp->ifa_next)
if (runp->ifa_addr->sa_family == PF_INET)
*seen_ipv4 = true;
else if (runp->ifa_addr->sa_family == PF_INET6)
*seen_ipv6 = true;
if (runp->ifa_addr != NULL)
{
if (runp->ifa_addr->sa_family == PF_INET)
*seen_ipv4 = true;
else if (runp->ifa_addr->sa_family == PF_INET6)
*seen_ipv6 = true;
}
(void) freeifaddrs (ifa);
#endif