bk://kernel.bkbits.net/davem/net-2.6
herbert@gondor.apana.org.au|ChangeSet|20050331005816|28260 herbert
# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
# 2005/03/30 16:58:16-08:00 herbert@gondor.apana.org.au
# [NETLINK]: Fix sk_rmem_alloc assertion failure.
#
# In netlink_dump we're operating on sk after dropping the cb lock.
# This is racy because the owner of the socket could close it after
# we drop the cb lock.
#
# This is possible because netlink_dump isn't always called from the
# context of the process that owns the socket. For instance, if there
# is contention on rtnl then rtnetlink requests will be processed by
# the process that owns the rtnl.
#
# The solution is to hold a ref count on the socket before we drop
# the cb lock.
#
# Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/netlink/af_netlink.c
# 2005/03/30 16:58:04-08:00 herbert@gondor.apana.org.au +2 -0
# [NETLINK]: Fix sk_rmem_alloc assertion failure.
#
# In netlink_dump we're operating on sk after dropping the cb lock.
# This is racy because the owner of the socket could close it after
# we drop the cb lock.
#
# This is possible because netlink_dump isn't always called from the
# context of the process that owns the socket. For instance, if there
# is contention on rtnl then rtnetlink requests will be processed by
# the process that owns the rtnl.
#
# The solution is to hold a ref count on the socket before we drop
# the cb lock.
#
# Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# ChangeSet
# 2005/03/30 16:35:41-08:00 yoshfuji@linux-ipv6.org
# [AF_UNIX]: unix_mkname comment
#
# Resurrect an old comment, explaining why this isn't an off-by-one error.
#
# Signed-off-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/unix/af_unix.c
# 2005/03/30 16:35:29-08:00 yoshfuji@linux-ipv6.org +7 -0
# [AF_UNIX]: unix_mkname comment
#
# Resurrect an old comment, explaining why this isn't an off-by-one error.
#
# Signed-off-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# ChangeSet
# 2005/03/30 16:35:08-08:00 yoshfuji@linux-ipv6.org
# [IPV6]: Fix address/interface handling according to the scoping architecture
#
# I think this has been there for long time (maybe since 2.4...).
#
# With the following patch, I can connect local link-local address.
# - Change incoming interface according to the scoping architecture
# - Choose source address on appropriate interface, according to the
# scoping architecture.
#
# Signed-off-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/ipv6/ip6_input.c
# 2005/03/30 16:34:56-08:00 yoshfuji@linux-ipv6.org +11 -3
# [IPV6]: Fix address/interface handling according to the scoping architecture
#
# I think this has been there for long time (maybe since 2.4...).
#
# With the following patch, I can connect local link-local address.
# - Change incoming interface according to the scoping architecture
# - Choose source address on appropriate interface, according to the
# scoping architecture.
#
# Signed-off-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/ipv6/addrconf.c
# 2005/03/30 16:34:56-08:00 yoshfuji@linux-ipv6.org +1 -1
# [IPV6]: Fix address/interface handling according to the scoping architecture
#
# I think this has been there for long time (maybe since 2.4...).
#
# With the following patch, I can connect local link-local address.
# - Change incoming interface according to the scoping architecture
# - Choose source address on appropriate interface, according to the
# scoping architecture.
#
# Signed-off-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# ChangeSet
# 2005/03/30 16:34:22-08:00 herbert@gondor.apana.org.au
# [PKT_SCHED]: Memory leak in ipt.c
#
# Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/sched/ipt.c
# 2005/03/30 16:34:10-08:00 herbert@gondor.apana.org.au +2 -0
# [PKT_SCHED]: Memory leak in ipt.c
#
# Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# ChangeSet
# 2005/03/30 16:33:25-08:00 rusty@rustcorp.com.au
# [NETFILTER]: Restore ports module parameter for ip_nat_{ftp,irq}
#
# There is no 'ports' parameter for the ip_nat_ftp and ip_nat_irc modules in
# 2.6.11: the ports parameter supplied to the
# ip_conntrack_ftp/ip_conntrack_irc module defines the ports. It was
# unfortunate that we were lazy in the original implementation, and forced
# the user to duplicate the arguments.
#
# Even more unfortunate, the removal of the parameter caused autoloading to
# break for various setups, with an 'Unknown parameter' message. The
# solution is to restore the parameter as a dummy, with a polite warning
# message that it is no longer neccessary.
#
# Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/ipv4/netfilter/ip_nat_irc.c
# 2005/03/30 16:33:13-08:00 rusty@rustcorp.com.au +9 -0
# [NETFILTER]: Restore ports module parameter for ip_nat_{ftp,irq}
#
# There is no 'ports' parameter for the ip_nat_ftp and ip_nat_irc modules in
# 2.6.11: the ports parameter supplied to the
# ip_conntrack_ftp/ip_conntrack_irc module defines the ports. It was
# unfortunate that we were lazy in the original implementation, and forced
# the user to duplicate the arguments.
#
# Even more unfortunate, the removal of the parameter caused autoloading to
# break for various setups, with an 'Unknown parameter' message. The
# solution is to restore the parameter as a dummy, with a polite warning
# message that it is no longer neccessary.
#
# Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/ipv4/netfilter/ip_nat_ftp.c
# 2005/03/30 16:33:13-08:00 rusty@rustcorp.com.au +9 -0
# [NETFILTER]: Restore ports module parameter for ip_nat_{ftp,irq}
#
# There is no 'ports' parameter for the ip_nat_ftp and ip_nat_irc modules in
# 2.6.11: the ports parameter supplied to the
# ip_conntrack_ftp/ip_conntrack_irc module defines the ports. It was
# unfortunate that we were lazy in the original implementation, and forced
# the user to duplicate the arguments.
#
# Even more unfortunate, the removal of the parameter caused autoloading to
# break for various setups, with an 'Unknown parameter' message. The
# solution is to restore the parameter as a dummy, with a polite warning
# message that it is no longer neccessary.
#
# Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# ChangeSet
# 2005/03/30 16:32:22-08:00 jan.kiszka@web.de
# [NET]: NULL pointer bug in netpoll.c
#
# It seems that there is a gremlin sleeping in net/core/netpoll.c:find_skb().
# Even if no more buffers are available through skbs, skb is
# dereferenced anyway. The tiny patch should fix it.
#
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/core/netpoll.c
# 2005/03/30 16:32:11-08:00 jan.kiszka@web.de +4 -3
# [NET]: NULL pointer bug in netpoll.c
#
# It seems that there is a gremlin sleeping in net/core/netpoll.c:find_skb().
# Even if no more buffers are available through skbs, skb is
# dereferenced anyway. The tiny patch should fix it.
#
# Signed-off-by: Andrew Morton <akpm@osdl.org>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# ChangeSet
# 2005/03/30 01:34:30+02:00 tgraf@suug.ch
# [PKT_SCHED]: Fix action statistics dumping in compatibility mode
#
# Extends the action dumping function by a parameter to differ between
# regular calls and the one supposed to add the backward compatiblity
# bits for old userspace applications.
#
# Signed-off-by: Thomas Graf <tgraf@suug.ch>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/sched/cls_api.c
# 2005/03/30 01:34:14+02:00 tgraf@suug.ch +1 -1
# [PKT_SCHED]: Fix action statistics dumping in compatibility mode
#
# net/sched/act_api.c
# 2005/03/30 01:34:14+02:00 tgraf@suug.ch +12 -7
# [PKT_SCHED]: Fix action statistics dumping in compatibility mode
#
# include/net/act_api.h
# 2005/03/30 01:34:14+02:00 tgraf@suug.ch +1 -1
# [PKT_SCHED]: Fix action statistics dumping in compatibility mode
#
# ChangeSet
# 2005/03/29 02:55:11+02:00 tgraf@suug.ch
# [NET]: Make primary TLV type optional
#
# Allows the use of the gnet_stats API for backward compatiblity
# cases where no "modern" TLV structure is needed.
#
# Signed-off-by: Thomas Graf <tgraf@suug.ch>
# Signed-off-by: David S. Miller <davem@davemloft.net>
#
# net/core/gen_stats.c
# 2005/03/29 02:54:56+02:00 tgraf@suug.ch +7 -3
# [NET]: Make primary TLV type optional
#
# ChangeSet
# 2005/03/29 02:45:52+02:00 tgraf@suug.ch
# Cset exclude: hadi@cyberus.ca|ChangeSet|20050325173452|50562
#
# net/sched/cls_u32.c
# 2005/03/29 02:45:46+02:00 tgraf@suug.ch +0 -0
# Exclude
#
# net/sched/cls_tcindex.c
# 2005/03/29 02:45:46+02:00 tgraf@suug.ch +0 -0
# Exclude
#
# net/sched/cls_route.c
# 2005/03/29 02:45:46+02:00 tgraf@suug.ch +0 -0
# Exclude
#
# net/sched/cls_fw.c
# 2005/03/29 02:45:46+02:00 tgraf@suug.ch +0 -0
# Exclude
#
diff -Nru a/include/net/act_api.h b/include/net/act_api.h
--- a/include/net/act_api.h 2005-03-30 17:19:39 -08:00
+++ b/include/net/act_api.h 2005-03-30 17:19:39 -08:00
@@ -81,7 +81,7 @@
extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int);
extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
-extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *);
+extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int);
#endif /* CONFIG_NET_CLS_ACT */
extern int tcf_police(struct sk_buff *skb, struct tcf_police *p);
diff -Nru a/net/core/gen_stats.c b/net/core/gen_stats.c
--- a/net/core/gen_stats.c 2005-03-30 17:19:39 -08:00
+++ b/net/core/gen_stats.c 2005-03-30 17:19:39 -08:00
@@ -26,7 +26,9 @@
static inline int
gnet_stats_copy(struct gnet_dump *d, int type, void *buf, int size)
{
- RTA_PUT(d->skb, type, size, buf);
+ if (type)
+ RTA_PUT(d->skb, type, size, buf);
+
return 0;
rtattr_failure:
@@ -58,7 +60,8 @@
{
spin_lock_bh(lock);
d->lock = lock;
- d->tail = (struct rtattr *) skb->tail;
+ if (type)
+ d->tail = (struct rtattr *) skb->tail;
d->skb = skb;
d->compat_tc_stats = tc_stats_type;
d->compat_xstats = xstats_type;
@@ -194,7 +197,8 @@
int
gnet_stats_finish_copy(struct gnet_dump *d)
{
- d->tail->rta_len = d->skb->tail - (u8 *) d->tail;
+ if (d->tail)
+ d->tail->rta_len = d->skb->tail - (u8 *) d->tail;
if (d->compat_tc_stats)
if (gnet_stats_copy(d, d->compat_tc_stats, &d->tc_stats,
diff -Nru a/net/core/netpoll.c b/net/core/netpoll.c
--- a/net/core/netpoll.c 2005-03-30 17:19:39 -08:00
+++ b/net/core/netpoll.c 2005-03-30 17:19:39 -08:00
@@ -219,10 +219,11 @@
if (!skb) {
spin_lock_irqsave(&skb_list_lock, flags);
skb = skbs;
- if (skb)
+ if (skb) {
skbs = skb->next;
- skb->next = NULL;
- nr_skbs--;
+ skb->next = NULL;
+ nr_skbs--;
+ }
spin_unlock_irqrestore(&skb_list_lock, flags);
}
diff -Nru a/net/ipv4/netfilter/ip_nat_ftp.c b/net/ipv4/netfilter/ip_nat_ftp.c
--- a/net/ipv4/netfilter/ip_nat_ftp.c 2005-03-30 17:19:39 -08:00
+++ b/net/ipv4/netfilter/ip_nat_ftp.c 2005-03-30 17:19:39 -08:00
@@ -170,5 +170,14 @@
return 0;
}
+/* Prior to 2.6.11, we had a ports param. No longer, but don't break users. */
+static int warn_set(const char *val, struct kernel_param *kp)
+{
+ printk(KERN_INFO __stringify(KBUILD_MODNAME)
+ ": kernel >= 2.6.10 only uses 'ports' for conntrack modules\n");
+ return 0;
+}
+module_param_call(ports, warn_set, NULL, NULL, 0);
+
module_init(init);
module_exit(fini);
diff -Nru a/net/ipv4/netfilter/ip_nat_irc.c b/net/ipv4/netfilter/ip_nat_irc.c
--- a/net/ipv4/netfilter/ip_nat_irc.c 2005-03-30 17:19:39 -08:00
+++ b/net/ipv4/netfilter/ip_nat_irc.c 2005-03-30 17:19:39 -08:00
@@ -112,5 +112,14 @@
return 0;
}
+/* Prior to 2.6.11, we had a ports param. No longer, but don't break users. */
+static int warn_set(const char *val, struct kernel_param *kp)
+{
+ printk(KERN_INFO __stringify(KBUILD_MODNAME)
+ ": kernel >= 2.6.10 only uses 'ports' for conntrack modules\n");
+ return 0;
+}
+module_param_call(ports, warn_set, NULL, NULL, 0);
+
module_init(init);
module_exit(fini);
diff -Nru a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
--- a/net/ipv6/addrconf.c 2005-03-30 17:19:39 -08:00
+++ b/net/ipv6/addrconf.c 2005-03-30 17:19:39 -08:00
@@ -942,7 +942,7 @@
int ipv6_get_saddr(struct dst_entry *dst,
struct in6_addr *daddr, struct in6_addr *saddr)
{
- return ipv6_dev_get_saddr(dst ? dst->dev : NULL, daddr, saddr);
+ return ipv6_dev_get_saddr(dst ? ((struct rt6_info *)dst)->rt6i_idev->dev : NULL, daddr, saddr);
}
diff -Nru a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
--- a/net/ipv6/ip6_input.c 2005-03-30 17:19:39 -08:00
+++ b/net/ipv6/ip6_input.c 2005-03-30 17:19:39 -08:00
@@ -71,10 +71,18 @@
goto out;
}
- /* Store incoming device index. When the packet will
- be queued, we cannot refer to skb->dev anymore.
+ /*
+ * Store incoming device index. When the packet will
+ * be queued, we cannot refer to skb->dev anymore.
+ *
+ * BTW, when we send a packet for our own local address on a
+ * non-loopback interface (e.g. ethX), it is being delivered
+ * via the loopback interface (lo) here; skb->dev = &loopback_dev.
+ * It, however, should be considered as if it is being
+ * arrived via the sending interface (ethX), because of the
+ * nature of scoping architecture. --yoshfuji
*/
- IP6CB(skb)->iif = dev->ifindex;
+ IP6CB(skb)->iif = skb->dst ? ((struct rt6_info *)skb->dst)->rt6i_idev->dev->ifindex : dev->ifindex;
if (skb->len < sizeof(struct ipv6hdr))
goto err;
diff -Nru a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
--- a/net/netlink/af_netlink.c 2005-03-30 17:19:39 -08:00
+++ b/net/netlink/af_netlink.c 2005-03-30 17:19:39 -08:00
@@ -1080,9 +1080,11 @@
len = cb->dump(skb, cb);
if (len > 0) {
+ sock_hold(sk);
spin_unlock(&nlk->cb_lock);
skb_queue_tail(&sk->sk_receive_queue, skb);
sk->sk_data_ready(sk, len);
+ sock_put(sk);
return 0;
}
diff -Nru a/net/sched/act_api.c b/net/sched/act_api.c
--- a/net/sched/act_api.c 2005-03-30 17:19:39 -08:00
+++ b/net/sched/act_api.c 2005-03-30 17:19:39 -08:00
@@ -228,7 +228,7 @@
return err;
RTA_PUT(skb, TCA_KIND, IFNAMSIZ, a->ops->kind);
- if (tcf_action_copy_stats(skb, a))
+ if (tcf_action_copy_stats(skb, a, 0))
goto rtattr_failure;
r = (struct rtattr*) skb->tail;
RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
@@ -380,19 +380,24 @@
return NULL;
}
-int tcf_action_copy_stats(struct sk_buff *skb, struct tc_action *a)
+int tcf_action_copy_stats(struct sk_buff *skb, struct tc_action *a,
+ int compat_mode)
{
- int err;
+ int err = 0;
struct gnet_dump d;
struct tcf_act_hdr *h = a->priv;
if (h == NULL)
goto errout;
- if (a->type == TCA_OLD_COMPAT)
- err = gnet_stats_start_copy_compat(skb, TCA_ACT_STATS,
- TCA_STATS, TCA_XSTATS, h->stats_lock, &d);
- else
+ /* compat_mode being true specifies a call that is supposed
+ * to add additional backward compatiblity statistic TLVs.
+ */
+ if (compat_mode) {
+ if (a->type == TCA_OLD_COMPAT)
+ err = gnet_stats_start_copy_compat(skb, 0,
+ TCA_STATS, TCA_XSTATS, h->stats_lock, &d);
+ } else
err = gnet_stats_start_copy(skb, TCA_ACT_STATS,
h->stats_lock, &d);
diff -Nru a/net/sched/cls_api.c b/net/sched/cls_api.c
--- a/net/sched/cls_api.c 2005-03-30 17:19:39 -08:00
+++ b/net/sched/cls_api.c 2005-03-30 17:19:39 -08:00
@@ -602,7 +602,7 @@
{
#ifdef CONFIG_NET_CLS_ACT
if (exts->action)
- if (tcf_action_copy_stats(skb, exts->action) < 0)
+ if (tcf_action_copy_stats(skb, exts->action, 1) < 0)
goto rtattr_failure;
#elif defined CONFIG_NET_CLS_POLICE
if (exts->police)
diff -Nru a/net/sched/cls_fw.c b/net/sched/cls_fw.c
--- a/net/sched/cls_fw.c 2005-03-30 17:19:39 -08:00
+++ b/net/sched/cls_fw.c 2005-03-30 17:19:39 -08:00
@@ -338,9 +338,8 @@
rta->rta_len = skb->tail - b;
- if (f->exts.action && f->exts.action->type == TCA_OLD_COMPAT)
- if (tcf_exts_dump_stats(skb, &f->exts, &fw_ext_map) < 0)
- goto rtattr_failure;
+ if (tcf_exts_dump_stats(skb, &f->exts, &fw_ext_map) < 0)
+ goto rtattr_failure;
return skb->len;
diff -Nru a/net/sched/cls_route.c b/net/sched/cls_route.c
--- a/net/sched/cls_route.c 2005-03-30 17:19:39 -08:00
+++ b/net/sched/cls_route.c 2005-03-30 17:19:39 -08:00
@@ -599,9 +599,8 @@
rta->rta_len = skb->tail - b;
- if (f->exts.action && f->exts.action->type == TCA_OLD_COMPAT)
- if (tcf_exts_dump_stats(skb, &f->exts, &route_ext_map) < 0)
- goto rtattr_failure;
+ if (tcf_exts_dump_stats(skb, &f->exts, &route_ext_map) < 0)
+ goto rtattr_failure;
return skb->len;
diff -Nru a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c
--- a/net/sched/cls_tcindex.c 2005-03-30 17:19:39 -08:00
+++ b/net/sched/cls_tcindex.c 2005-03-30 17:19:39 -08:00
@@ -496,9 +496,8 @@
goto rtattr_failure;
rta->rta_len = skb->tail-b;
- if (r->exts.action && r->exts.action->type == TCA_OLD_COMPAT)
- if (tcf_exts_dump_stats(skb, &r->exts, &tcindex_ext_map) < 0)
- goto rtattr_failure;
+ if (tcf_exts_dump_stats(skb, &r->exts, &tcindex_ext_map) < 0)
+ goto rtattr_failure;
}
return skb->len;
diff -Nru a/net/sched/cls_u32.c b/net/sched/cls_u32.c
--- a/net/sched/cls_u32.c 2005-03-30 17:19:39 -08:00
+++ b/net/sched/cls_u32.c 2005-03-30 17:19:39 -08:00
@@ -775,7 +775,7 @@
}
rta->rta_len = skb->tail - b;
- if (TC_U32_KEY(n->handle) && n->exts.action && n->exts.action->type == TCA_OLD_COMPAT)
+ if (TC_U32_KEY(n->handle))
if (tcf_exts_dump_stats(skb, &n->exts, &u32_ext_map) < 0)
goto rtattr_failure;
return skb->len;
diff -Nru a/net/sched/ipt.c b/net/sched/ipt.c
--- a/net/sched/ipt.c 2005-03-30 17:19:39 -08:00
+++ b/net/sched/ipt.c 2005-03-30 17:19:39 -08:00
@@ -284,10 +284,12 @@
tm.lastuse = jiffies_to_clock_t(jiffies - p->tm.lastuse);
tm.expires = jiffies_to_clock_t(p->tm.expires);
RTA_PUT(skb, TCA_IPT_TM, sizeof (tm), &tm);
+ kfree(t);
return skb->len;
rtattr_failure:
skb_trim(skb, b - skb->data);
+ kfree(t);
return -1;
}
diff -Nru a/net/unix/af_unix.c b/net/unix/af_unix.c
--- a/net/unix/af_unix.c 2005-03-30 17:19:39 -08:00
+++ b/net/unix/af_unix.c 2005-03-30 17:19:39 -08:00
@@ -188,6 +188,13 @@
if (!sunaddr || sunaddr->sun_family != AF_UNIX)
return -EINVAL;
if (sunaddr->sun_path[0]) {
+ /*
+ * This may look like an off by one error but it is a bit more
+ * subtle. 108 is the longest valid AF_UNIX path for a binding.
+ * sun_path[108] doesnt as such exist. However in kernel space
+ * we are guaranteed that it is a valid memory location in our
+ * kernel address buffer.
+ */
((char *)sunaddr)[len]=0;
len = strlen(sunaddr->sun_path)+1+sizeof(short);
return len;