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-rw-r--r--cross/cross-mips64el-unknown-linux-gnu-glibc-headers/glibc-2.15-revert-netlink-cache.patch680
1 files changed, 680 insertions, 0 deletions
diff --git a/cross/cross-mips64el-unknown-linux-gnu-glibc-headers/glibc-2.15-revert-netlink-cache.patch b/cross/cross-mips64el-unknown-linux-gnu-glibc-headers/glibc-2.15-revert-netlink-cache.patch
new file mode 100644
index 000000000..87d04c794
--- /dev/null
+++ b/cross/cross-mips64el-unknown-linux-gnu-glibc-headers/glibc-2.15-revert-netlink-cache.patch
@@ -0,0 +1,680 @@
+diff --git a/include/ifaddrs.h b/include/ifaddrs.h
+index e1c6cac..50e4c48 100644
+--- a/include/ifaddrs.h
++++ b/include/ifaddrs.h
+@@ -21,13 +21,8 @@ struct in6addrinfo
+ extern void __check_pf (bool *seen_ipv4, bool *seen_ipv6,
+ struct in6addrinfo **in6ai, size_t *in6ailen)
+ attribute_hidden;
+-extern void __free_in6ai (struct in6addrinfo *in6ai) attribute_hidden;
+ extern void __check_native (uint32_t a1_index, int *a1_native,
+ uint32_t a2_index, int *a2_native)
+ attribute_hidden;
+
+-#ifdef IS_IN_nscd
+-extern uint32_t __bump_nl_timestamp (void) attribute_hidden;
+-#endif
+-
+ #endif /* ifaddrs.h */
+diff --git a/inet/check_pf.c b/inet/check_pf.c
+index 0fa34cc..b015432 100644
+--- a/inet/check_pf.c
++++ b/inet/check_pf.c
+@@ -1,5 +1,5 @@
+ /* Determine protocol families for which interfaces exist. Generic version.
+- Copyright (C) 2003, 2006, 2011 Free Software Foundation, Inc.
++ Copyright (C) 2003, 2006 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
+@@ -54,19 +54,3 @@ __check_pf (bool *seen_ipv4, bool *seen_ipv6,
+
+ (void) freeifaddrs (ifa);
+ }
+-
+-
+-void
+-__free_in6ai (struct in6addrinfo *in6ai)
+-{
+- /* Nothing to do. */
+-}
+-
+-
+-#ifdef IS_IN_nscd
+-uint32_t
+-__bump_nl_timestamp (void)
+-{
+- return 0;
+-}
+-#endif
+diff --git a/nscd/connections.c b/nscd/connections.c
+index c741996..2b5c7ef 100644
+--- a/nscd/connections.c
++++ b/nscd/connections.c
+@@ -24,7 +24,6 @@
+ #include <errno.h>
+ #include <fcntl.h>
+ #include <grp.h>
+-#include <ifaddrs.h>
+ #include <libintl.h>
+ #include <pthread.h>
+ #include <pwd.h>
+@@ -33,10 +32,6 @@
+ #include <stdlib.h>
+ #include <unistd.h>
+ #include <arpa/inet.h>
+-#ifdef HAVE_NETLINK
+-# include <linux/netlink.h>
+-# include <linux/rtnetlink.h>
+-#endif
+ #ifdef HAVE_EPOLL
+ # include <sys/epoll.h>
+ #endif
+@@ -252,11 +247,6 @@ static int sock;
+ int inotify_fd = -1;
+ #endif
+
+-#ifdef HAVE_NETLINK
+-/* Descriptor for netlink status updates. */
+-static int nl_status_fd = -1;
+-#endif
+-
+ #ifndef __ASSUME_SOCK_CLOEXEC
+ /* Negative if SOCK_CLOEXEC is not supported, positive if it is, zero
+ before be know the result. */
+@@ -913,65 +903,6 @@ cannot set socket to close on exec: %s; disabling paranoia mode"),
+ exit (1);
+ }
+
+-#ifdef HAVE_NETLINK
+- if (dbs[hstdb].enabled)
+- {
+- /* Try to open netlink socket to monitor network setting changes. */
+- nl_status_fd = socket (AF_NETLINK,
+- SOCK_RAW | SOCK_CLOEXEC | SOCK_NONBLOCK,
+- NETLINK_ROUTE);
+- if (nl_status_fd != -1)
+- {
+- struct sockaddr_nl snl;
+- memset (&snl, '\0', sizeof (snl));
+- snl.nl_family = AF_NETLINK;
+- /* XXX Is this the best set to use? */
+- snl.nl_groups = (RTMGRP_IPV4_IFADDR | RTMGRP_TC | RTMGRP_IPV4_MROUTE
+- | RTMGRP_IPV4_ROUTE | RTMGRP_IPV4_RULE
+- | RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_MROUTE
+- | RTMGRP_IPV6_ROUTE | RTMGRP_IPV6_IFINFO
+- | RTMGRP_IPV6_PREFIX);
+-
+- if (bind (nl_status_fd, (struct sockaddr *) &snl, sizeof (snl)) != 0)
+- {
+- close (nl_status_fd);
+- nl_status_fd = -1;
+- }
+- else
+- {
+- /* Start the timestamp process. */
+- dbs[hstdb].head->extra_data[NSCD_HST_IDX_CONF_TIMESTAMP]
+- = __bump_nl_timestamp ();
+-
+-# ifndef __ASSUME_SOCK_CLOEXEC
+- if (have_sock_cloexec < 0)
+- {
+- /* We don't want to get stuck on accept. */
+- int fl = fcntl (nl_status_fd, F_GETFL);
+- if (fl == -1
+- || fcntl (nl_status_fd, F_SETFL, fl | O_NONBLOCK) == -1)
+- {
+- dbg_log (_("\
+-cannot change socket to nonblocking mode: %s"),
+- strerror (errno));
+- exit (1);
+- }
+-
+- /* The descriptor needs to be closed on exec. */
+- if (paranoia
+- && fcntl (nl_status_fd, F_SETFD, FD_CLOEXEC) == -1)
+- {
+- dbg_log (_("cannot set socket to close on exec: %s"),
+- strerror (errno));
+- exit (1);
+- }
+- }
+-# endif
+- }
+- }
+- }
+-#endif
+-
+ /* Change to unprivileged uid/gid/groups if specified in config file */
+ if (server_user != NULL)
+ finish_drop_privileges ();
+@@ -1895,18 +1826,6 @@ main_loop_poll (void)
+ }
+ #endif
+
+-#ifdef HAVE_NETLINK
+- size_t idx_nl_status_fd = 0;
+- if (nl_status_fd != -1)
+- {
+- idx_nl_status_fd = nused;
+- conns[nused].fd = nl_status_fd;
+- conns[nused].events = POLLRDNORM;
+- ++nused;
+- firstfree = nused;
+- }
+-#endif
+-
+ while (1)
+ {
+ /* Wait for any event. We wait at most a couple of seconds so
+@@ -2049,20 +1968,6 @@ disabled inotify after read error %d"),
+ }
+ #endif
+
+-#ifdef HAVE_NETLINK
+- if (idx_nl_status_fd != 0 && conns[idx_nl_status_fd].revents != 0)
+- {
+- char buf[4096];
+- /* Read all the data. We do not interpret it here. */
+- while (TEMP_FAILURE_RETRY (read (nl_status_fd, buf,
+- sizeof (buf))) != -1)
+- ;
+-
+- dbs[hstdb].head->extra_data[NSCD_HST_IDX_CONF_TIMESTAMP]
+- = __bump_nl_timestamp ();
+- }
+-#endif
+-
+ for (size_t cnt = first; cnt < nused && n > 0; ++cnt)
+ if (conns[cnt].revents != 0)
+ {
+@@ -2141,17 +2046,6 @@ main_loop_epoll (int efd)
+ }
+ # endif
+
+-# ifdef HAVE_NETLINK
+- if (nl_status_fd != -1)
+- {
+- ev.events = EPOLLRDNORM;
+- ev.data.fd = nl_status_fd;
+- if (epoll_ctl (efd, EPOLL_CTL_ADD, nl_status_fd, &ev) == -1)
+- /* We cannot use epoll. */
+- return;
+- }
+-# endif
+-
+ while (1)
+ {
+ struct epoll_event revs[100];
+@@ -2268,18 +2162,6 @@ main_loop_epoll (int efd)
+ }
+ }
+ # endif
+-# ifdef HAVE_NETLINK
+- else if (revs[cnt].data.fd == nl_status_fd)
+- {
+- char buf[4096];
+- /* Read all the data. We do not interpret it here. */
+- while (TEMP_FAILURE_RETRY (read (nl_status_fd, buf,
+- sizeof (buf))) != -1)
+- ;
+-
+- __bump_nl_timestamp ();
+- }
+-# endif
+ else
+ {
+ /* Remove the descriptor from the epoll descriptor. */
+@@ -2303,7 +2185,6 @@ main_loop_epoll (int efd)
+ time_t laststart = now - ACCEPT_TIMEOUT;
+ assert (starttime[sock] == 0);
+ assert (inotify_fd == -1 || starttime[inotify_fd] == 0);
+- assert (nl_status_fd == -1 || starttime[nl_status_fd] == 0);
+ for (int cnt = highest; cnt > STDERR_FILENO; --cnt)
+ if (starttime[cnt] != 0 && starttime[cnt] < laststart)
+ {
+diff --git a/nscd/nscd-client.h b/nscd/nscd-client.h
+index b5cd2d2..caad26a 100644
+--- a/nscd/nscd-client.h
++++ b/nscd/nscd-client.h
+@@ -260,17 +260,12 @@ struct hashentry
+
+
+ /* Current persistent database version. */
+-#define DB_VERSION 2
++#define DB_VERSION 1
+
+ /* Maximum time allowed between updates of the timestamp. */
+ #define MAPPING_TIMEOUT (5 * 60)
+
+
+-/* Used indices for the EXTRA_DATA element of 'database_pers_head'.
+- Each database has its own indices. */
+-#define NSCD_HST_IDX_CONF_TIMESTAMP 0
+-
+-
+ /* Header of persistent database file. */
+ struct database_pers_head
+ {
+@@ -279,8 +274,6 @@ struct database_pers_head
+ volatile int32_t gc_cycle;
+ volatile int32_t nscd_certainly_running;
+ volatile nscd_time_t timestamp;
+- /* Room for extensions. */
+- volatile uint32_t extra_data[4];
+
+ nscd_ssize_t module;
+ nscd_ssize_t data_size;
+@@ -329,12 +322,6 @@ extern int __nscd_open_socket (const char *key, size_t keylen,
+ request_type type, void *response,
+ size_t responselen) attribute_hidden;
+
+-/* Try to get a file descriptor for the shared meory segment
+- containing the database. */
+-extern struct mapped_database *__nscd_get_mapping (request_type type,
+- const char *key,
+- struct mapped_database **mappedp) attribute_hidden;
+-
+ /* Get reference of mapping. */
+ extern struct mapped_database *__nscd_get_map_ref (request_type type,
+ const char *name,
+@@ -384,7 +371,4 @@ extern ssize_t writeall (int fd, const void *buf, size_t len)
+ extern ssize_t sendfileall (int tofd, int fromfd, off_t off, size_t len)
+ attribute_hidden;
+
+-/* Get netlink timestamp counter from mapped area or zero. */
+-extern uint32_t __nscd_get_nl_timestamp (void);
+-
+ #endif /* nscd.h */
+diff --git a/nscd/nscd_gethst_r.c b/nscd/nscd_gethst_r.c
+index 6ee142d..70631fa 100644
+--- a/nscd/nscd_gethst_r.c
++++ b/nscd/nscd_gethst_r.c
+@@ -1,4 +1,4 @@
+-/* Copyright (C) 1998-2005, 2006, 2007, 2008, 2009, 2011
++/* Copyright (C) 1998-2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+@@ -98,27 +98,6 @@ libc_freeres_fn (hst_map_free)
+ }
+
+
+-uint32_t
+-__nscd_get_nl_timestamp (void)
+-{
+- if (__nss_not_use_nscd_hosts != 0)
+- return 0;
+-
+- struct mapped_database *map = __hst_map_handle.mapped;
+-
+- if (map == NULL
+- || (map != NO_MAPPING
+- && map->head->nscd_certainly_running == 0
+- && map->head->timestamp + MAPPING_TIMEOUT < time (NULL)))
+- map = __nscd_get_mapping (GETFDHST, "hosts", &__hst_map_handle.mapped);
+-
+- if (map == NO_MAPPING)
+- return 0;
+-
+- return map->head->extra_data[NSCD_HST_IDX_CONF_TIMESTAMP];
+-}
+-
+-
+ int __nss_have_localdomain attribute_hidden;
+
+ static int
+diff --git a/nscd/nscd_helper.c b/nscd/nscd_helper.c
+index 365b599..fe63f9a 100644
+--- a/nscd/nscd_helper.c
++++ b/nscd/nscd_helper.c
+@@ -277,9 +277,9 @@ __nscd_unmap (struct mapped_database *mapped)
+
+ /* Try to get a file descriptor for the shared meory segment
+ containing the database. */
+-struct mapped_database *
+-__nscd_get_mapping (request_type type, const char *key,
+- struct mapped_database **mappedp)
++static struct mapped_database *
++get_mapping (request_type type, const char *key,
++ struct mapped_database **mappedp)
+ {
+ struct mapped_database *result = NO_MAPPING;
+ #ifdef SCM_RIGHTS
+@@ -449,8 +449,8 @@ __nscd_get_map_ref (request_type type, const char *name,
+ || (cur->head->nscd_certainly_running == 0
+ && cur->head->timestamp + MAPPING_TIMEOUT < time (NULL))
+ || cur->head->data_size > cur->datasize)
+- cur = __nscd_get_mapping (type, name,
+- (struct mapped_database **) &mapptr->mapped);
++ cur = get_mapping (type, name,
++ (struct mapped_database **) &mapptr->mapped);
+
+ if (__builtin_expect (cur != NO_MAPPING, 1))
+ {
+diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
+index 1a023f9..4979805 100644
+--- a/sysdeps/posix/getaddrinfo.c
++++ b/sysdeps/posix/getaddrinfo.c
+@@ -2386,7 +2386,7 @@ getaddrinfo (const char *name, const char *service,
+ || (hints->ai_family == PF_INET6 && ! seen_ipv6))
+ {
+ /* We cannot possibly return a valid answer. */
+- __free_in6ai (in6ai);
++ free (in6ai);
+ return EAI_NONAME;
+ }
+ }
+@@ -2400,7 +2400,7 @@ getaddrinfo (const char *name, const char *service,
+ {
+ if (hints->ai_flags & AI_NUMERICSERV)
+ {
+- __free_in6ai (in6ai);
++ free (in6ai);
+ return EAI_NONAME;
+ }
+
+@@ -2422,7 +2422,7 @@ getaddrinfo (const char *name, const char *service,
+ if (last_i != 0)
+ {
+ freeaddrinfo (p);
+- __free_in6ai (in6ai);
++ free (in6ai);
+
+ return -(last_i & GAIH_EAI);
+ }
+@@ -2434,7 +2434,7 @@ getaddrinfo (const char *name, const char *service,
+ }
+ else
+ {
+- __free_in6ai (in6ai);
++ free (in6ai);
+ return EAI_FAMILY;
+ }
+
+@@ -2622,7 +2622,7 @@ getaddrinfo (const char *name, const char *service,
+ p->ai_canonname = canonname;
+ }
+
+- __free_in6ai (in6ai);
++ free (in6ai);
+
+ if (p)
+ {
+diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
+index e684b16..c907af4 100644
+--- a/sysdeps/unix/sysv/linux/Makefile
++++ b/sysdeps/unix/sysv/linux/Makefile
+@@ -173,6 +173,6 @@ CFLAGS-mq_receive.c += -fexceptions
+ endif
+
+ ifeq ($(subdir),nscd)
+-sysdep-CFLAGS += -DHAVE_EPOLL -DHAVE_SENDFILE -DHAVE_INOTIFY -DHAVE_NETLINK
++sysdep-CFLAGS += -DHAVE_EPOLL -DHAVE_SENDFILE -DHAVE_INOTIFY
+ CFLAGS-gai.c += -DNEED_NETLINK
+ endif
+diff --git a/sysdeps/unix/sysv/linux/check_pf.c b/sysdeps/unix/sysv/linux/check_pf.c
+index 0738a70..d5ad7ea 100644
+--- a/sysdeps/unix/sysv/linux/check_pf.c
++++ b/sysdeps/unix/sysv/linux/check_pf.c
+@@ -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, 2006, 2007, 2008, 2010, 2011 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
+@@ -33,9 +33,6 @@
+
+ #include <not-cancel.h>
+ #include <kernel-features.h>
+-#include <bits/libc-lock.h>
+-#include <atomic.h>
+-#include <nscd/nscd-client.h>
+
+
+ #ifndef IFA_F_HOMEADDRESS
+@@ -46,42 +43,9 @@
+ #endif
+
+
+-struct cached_data
+-{
+- uint32_t timestamp;
+- uint32_t usecnt;
+- bool seen_ipv4;
+- bool seen_ipv6;
+- size_t in6ailen;
+- struct in6addrinfo in6ai[0];
+-};
+-
+-static struct cached_data noai6ai_cached =
+- {
+- .usecnt = 1, /* Make sure we never try to delete this entry. */
+- .in6ailen = 0
+- };
+-
+-static struct cached_data *cache;
+-__libc_lock_define_initialized (static, lock);
+-
+-
+-#ifdef IS_IN_nscd
+-static uint32_t nl_timestamp;
+-
+-uint32_t
+-__bump_nl_timestamp (void)
+-{
+- if (atomic_increment_val (&nl_timestamp) == 0)
+- atomic_increment (&nl_timestamp);
+-
+- return nl_timestamp;
+-}
+-#endif
+-
+-
+-static struct cached_data *
+-make_request (int fd, pid_t pid)
++static int
++make_request (int fd, pid_t pid, bool *seen_ipv4, bool *seen_ipv6,
++ struct in6addrinfo **in6ai, size_t *in6ailen)
+ {
+ struct req
+ {
+@@ -135,6 +99,9 @@ make_request (int fd, pid_t pid)
+ sizeof (nladdr))) < 0)
+ goto out_fail;
+
++ *seen_ipv4 = false;
++ *seen_ipv6 = false;
++
+ bool done = false;
+ struct in6ailist
+ {
+@@ -142,8 +109,6 @@ make_request (int fd, pid_t pid)
+ struct in6ailist *next;
+ } *in6ailist = NULL;
+ size_t in6ailistlen = 0;
+- bool seen_ipv4 = false;
+- bool seen_ipv6 = false;
+
+ do
+ {
+@@ -207,12 +172,12 @@ make_request (int fd, pid_t pid)
+ {
+ if (*(const in_addr_t *) address
+ != htonl (INADDR_LOOPBACK))
+- seen_ipv4 = true;
++ *seen_ipv4 = true;
+ }
+ else
+ {
+ if (!IN6_IS_ADDR_LOOPBACK (address))
+- seen_ipv6 = true;
++ *seen_ipv6 = true;
+ }
+ }
+
+@@ -246,47 +211,30 @@ make_request (int fd, pid_t pid)
+ }
+ while (! done);
+
+- struct cached_data *result;
+- if (seen_ipv6 && in6ailist != NULL)
++ if (*seen_ipv6 && in6ailist != NULL)
+ {
+- result = malloc (sizeof (*result)
+- + in6ailistlen * sizeof (struct in6addrinfo));
+- if (result == NULL)
++ *in6ai = malloc (in6ailistlen * sizeof (**in6ai));
++ if (*in6ai == NULL)
+ goto out_fail;
+
+-#ifdef IS_IN_nscd
+- result->timestamp = nl_timestamp;
+-#else
+- result->timestamp = __nscd_get_nl_timestamp ();
+-#endif
+- result->usecnt = 2;
+- result->seen_ipv4 = seen_ipv4;
+- result->seen_ipv6 = true;
+- result->in6ailen = in6ailistlen;
++ *in6ailen = in6ailistlen;
+
+ do
+ {
+- result->in6ai[--in6ailistlen] = in6ailist->info;
++ (*in6ai)[--in6ailistlen] = in6ailist->info;
+ in6ailist = in6ailist->next;
+ }
+ while (in6ailist != NULL);
+ }
+- else
+- {
+- atomic_add (&noai6ai_cached.usecnt, 2);
+- noai6ai_cached.seen_ipv4 = seen_ipv4;
+- noai6ai_cached.seen_ipv6 = seen_ipv6;
+- result = &noai6ai_cached;
+- }
+
+ if (use_malloc)
+ free (buf);
+- return result;
++ return 0;
+
+ out_fail:
+ if (use_malloc)
+ free (buf);
+- return NULL;
++ return -1;
+ }
+
+
+@@ -310,65 +258,28 @@ __check_pf (bool *seen_ipv4, bool *seen_ipv6,
+
+ if (! __no_netlink_support)
+ {
+- struct cached_data *olddata = NULL;
+- struct cached_data *data = NULL;
++ int fd = __socket (PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+
+- __libc_lock_lock (lock);
+-
+-#ifdef IS_IN_nscd
+-# define cache_valid() nl_timestamp != 0 && cache->timestamp == nl_timestamp
+-#else
+-# define cache_valid() \
+- ({ uint32_t val = __nscd_get_nl_timestamp (); \
+- val != 0 && cache->timestamp == val; })
+-#endif
+- if (cache != NULL && cache_valid ())
+- {
+- data = cache;
+- atomic_increment (&cache->usecnt);
+- }
+- else
++ if (__builtin_expect (fd >= 0, 1))
+ {
+- int fd = __socket (PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
++ struct sockaddr_nl nladdr;
++ memset (&nladdr, '\0', sizeof (nladdr));
++ nladdr.nl_family = AF_NETLINK;
+
+- 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;
+- }
+- }
++ socklen_t addr_len = sizeof (nladdr);
+
+- __libc_lock_unlock (lock);
++ bool success
++ = (__bind (fd, (struct sockaddr *) &nladdr, sizeof (nladdr)) == 0
++ && __getsockname (fd, (struct sockaddr *) &nladdr,
++ &addr_len) == 0
++ && make_request (fd, nladdr.nl_pid, seen_ipv4, seen_ipv6,
++ in6ai, in6ailen) == 0);
+
+- 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);
++ close_not_cancel_no_status (fd);
+
+- return;
++ if (success)
++ /* It worked. */
++ return;
+ }
+
+ #if __ASSUME_NETLINK_SUPPORT == 0
+@@ -407,26 +318,3 @@ __check_pf (bool *seen_ipv4, bool *seen_ipv6,
+ (void) freeifaddrs (ifa);
+ #endif
+ }
+-
+-
+-void
+-__free_in6ai (struct in6addrinfo *ai)
+-{
+- if (ai != NULL)
+- {
+- struct cached_data *data =
+- (struct cached_data *) ((char *) ai
+- - offsetof (struct cached_data, in6ai));
+-
+- if (atomic_add_zero (&data->usecnt, -1))
+- {
+- __libc_lock_lock (lock);
+-
+- if (data->usecnt == 0)
+- /* Still unused. */
+- free (data);
+-
+- __libc_lock_unlock (lock);
+- }
+- }
+-}