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Remove pre-2.4.21 Linux kernel support.

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This commit is contained in:
Joseph Myers
2012-07-25 21:19:13 +00:00
parent 842a39cd1a
commit 89b4b02f42
23 changed files with 188 additions and 519 deletions
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133
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, 2006-2008, 2010, 2011 Free Software Foundation, Inc.
Copyright (C) 2003-2012 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
@ -289,16 +289,6 @@ out_fail:
}
/* We don't know if we have NETLINK support compiled into our
Kernel. */
#if __ASSUME_NETLINK_SUPPORT == 0
/* Define in ifaddrs.h. */
extern int __no_netlink_support attribute_hidden;
#else
# define __no_netlink_support 0
#endif
void
attribute_hidden
__check_pf (bool *seen_ipv4, bool *seen_ipv6,
@ -307,12 +297,10 @@ __check_pf (bool *seen_ipv4, bool *seen_ipv6,
*in6ai = NULL;
*in6ailen = 0;
if (! __no_netlink_support)
{
struct cached_data *olddata = NULL;
struct cached_data *data = NULL;
struct cached_data *olddata = NULL;
struct cached_data *data = NULL;
__libc_lock_lock (lock);
__libc_lock_lock (lock);
#ifdef IS_IN_nscd
# define cache_valid() nl_timestamp != 0 && cache->timestamp == nl_timestamp
@ -321,90 +309,59 @@ __check_pf (bool *seen_ipv4, bool *seen_ipv6,
({ uint32_t val = __nscd_get_nl_timestamp (); \
val != 0 && cache->timestamp == val; })
#endif
if (cache != NULL && cache_valid ())
if (cache != NULL && cache_valid ())
{
data = cache;
atomic_increment (&cache->usecnt);
}
else
{
int fd = __socket (PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
if (__builtin_expect (fd >= 0, 1))
{
data = cache;
atomic_increment (&cache->usecnt);
struct sockaddr_nl nladdr;
memset (&nladdr, '\0', sizeof (nladdr));
nladdr.nl_family = AF_NETLINK;
socklen_t addr_len = sizeof (nladdr);
if (__bind (fd, (struct sockaddr *) &nladdr, sizeof (nladdr)) == 0
&& __getsockname (fd, (struct sockaddr *) &nladdr,
&addr_len) == 0)
data = make_request (fd, nladdr.nl_pid);
close_not_cancel_no_status (fd);
}
else
{
int fd = __socket (PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
if (__builtin_expect (fd >= 0, 1))
{
struct sockaddr_nl nladdr;
memset (&nladdr, '\0', sizeof (nladdr));
nladdr.nl_family = AF_NETLINK;
socklen_t addr_len = sizeof (nladdr);
if(__bind (fd, (struct sockaddr *) &nladdr, sizeof (nladdr)) == 0
&& __getsockname (fd, (struct sockaddr *) &nladdr,
&addr_len) == 0)
data = make_request (fd, nladdr.nl_pid);
close_not_cancel_no_status (fd);
}
if (data != NULL)
{
olddata = cache;
cache = data;
}
}
__libc_lock_unlock (lock);
if (data != NULL)
{
/* It worked. */
*seen_ipv4 = data->seen_ipv4;
*seen_ipv6 = data->seen_ipv6;
*in6ailen = data->in6ailen;
*in6ai = data->in6ai;
if (olddata != NULL && olddata->usecnt > 0
&& atomic_add_zero (&olddata->usecnt, -1))
free (olddata);
return;
olddata = cache;
cache = data;
}
#if __ASSUME_NETLINK_SUPPORT == 0
/* Remember that there is no netlink support. */
__no_netlink_support = 1;
#else
/* We cannot determine what interfaces are available. Be
pessimistic. */
*seen_ipv4 = true;
*seen_ipv6 = true;
#endif
}
#if __ASSUME_NETLINK_SUPPORT == 0
/* No netlink. Get the interface list via getifaddrs. */
struct ifaddrs *ifa = NULL;
if (getifaddrs (&ifa) != 0)
__libc_lock_unlock (lock);
if (data != NULL)
{
/* We cannot determine what interfaces are available. Be
pessimistic. */
*seen_ipv4 = true;
*seen_ipv6 = true;
/* It worked. */
*seen_ipv4 = data->seen_ipv4;
*seen_ipv6 = data->seen_ipv6;
*in6ailen = data->in6ailen;
*in6ai = data->in6ai;
if (olddata != NULL && olddata->usecnt > 0
&& atomic_add_zero (&olddata->usecnt, -1))
free (olddata);
return;
}
struct ifaddrs *runp;
for (runp = ifa; runp != NULL; runp = runp->ifa_next)
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
/* We cannot determine what interfaces are available. Be
pessimistic. */
*seen_ipv4 = true;
*seen_ipv6 = true;
}