Commit b884fa46 authored by Florian Westphal's avatar Florian Westphal Committed by Pablo Neira Ayuso

netfilter: conntrack: unify sysctl handling

Due to historical reasons, all l4 trackers register their own
sysctls.

This leads to copy&pasted boilerplate code, that does exactly same
thing, just with different data structure.

Place all of this in a single file.

This allows to remove the various ctl_table pointers from the ct_netns
structure and reduces overall code size.
Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 303e0c55
...@@ -724,90 +724,6 @@ dccp_timeout_nla_policy[CTA_TIMEOUT_DCCP_MAX+1] = { ...@@ -724,90 +724,6 @@ dccp_timeout_nla_policy[CTA_TIMEOUT_DCCP_MAX+1] = {
}; };
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
#ifdef CONFIG_SYSCTL
/* template, data assigned later */
static struct ctl_table dccp_sysctl_table[] = {
{
.procname = "nf_conntrack_dccp_timeout_request",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_dccp_timeout_respond",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_dccp_timeout_partopen",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_dccp_timeout_open",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_dccp_timeout_closereq",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_dccp_timeout_closing",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_dccp_timeout_timewait",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_dccp_loose",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{ }
};
#endif /* CONFIG_SYSCTL */
static int dccp_kmemdup_sysctl_table(struct net *net, struct nf_proto_net *pn,
struct nf_dccp_net *dn)
{
#ifdef CONFIG_SYSCTL
if (pn->ctl_table)
return 0;
pn->ctl_table = kmemdup(dccp_sysctl_table,
sizeof(dccp_sysctl_table),
GFP_KERNEL);
if (!pn->ctl_table)
return -ENOMEM;
pn->ctl_table[0].data = &dn->dccp_timeout[CT_DCCP_REQUEST];
pn->ctl_table[1].data = &dn->dccp_timeout[CT_DCCP_RESPOND];
pn->ctl_table[2].data = &dn->dccp_timeout[CT_DCCP_PARTOPEN];
pn->ctl_table[3].data = &dn->dccp_timeout[CT_DCCP_OPEN];
pn->ctl_table[4].data = &dn->dccp_timeout[CT_DCCP_CLOSEREQ];
pn->ctl_table[5].data = &dn->dccp_timeout[CT_DCCP_CLOSING];
pn->ctl_table[6].data = &dn->dccp_timeout[CT_DCCP_TIMEWAIT];
pn->ctl_table[7].data = &dn->dccp_loose;
/* Don't export sysctls to unprivileged users */
if (net->user_ns != &init_user_ns)
pn->ctl_table[0].procname = NULL;
#endif
return 0;
}
static int dccp_init_net(struct net *net) static int dccp_init_net(struct net *net)
{ {
struct nf_dccp_net *dn = nf_dccp_pernet(net); struct nf_dccp_net *dn = nf_dccp_pernet(net);
...@@ -830,7 +746,7 @@ static int dccp_init_net(struct net *net) ...@@ -830,7 +746,7 @@ static int dccp_init_net(struct net *net)
dn->dccp_timeout[CT_DCCP_NONE] = dn->dccp_timeout[CT_DCCP_REQUEST]; dn->dccp_timeout[CT_DCCP_NONE] = dn->dccp_timeout[CT_DCCP_REQUEST];
} }
return dccp_kmemdup_sysctl_table(net, pn, dn); return 0;
} }
static struct nf_proto_net *dccp_get_net_proto(struct net *net) static struct nf_proto_net *dccp_get_net_proto(struct net *net)
......
...@@ -60,41 +60,13 @@ generic_timeout_nla_policy[CTA_TIMEOUT_GENERIC_MAX+1] = { ...@@ -60,41 +60,13 @@ generic_timeout_nla_policy[CTA_TIMEOUT_GENERIC_MAX+1] = {
}; };
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
#ifdef CONFIG_SYSCTL
static struct ctl_table generic_sysctl_table[] = {
{
.procname = "nf_conntrack_generic_timeout",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{ }
};
#endif /* CONFIG_SYSCTL */
static int generic_kmemdup_sysctl_table(struct nf_proto_net *pn,
struct nf_generic_net *gn)
{
#ifdef CONFIG_SYSCTL
pn->ctl_table = kmemdup(generic_sysctl_table,
sizeof(generic_sysctl_table),
GFP_KERNEL);
if (!pn->ctl_table)
return -ENOMEM;
pn->ctl_table[0].data = &gn->timeout;
#endif
return 0;
}
static int generic_init_net(struct net *net) static int generic_init_net(struct net *net)
{ {
struct nf_generic_net *gn = nf_generic_pernet(net); struct nf_generic_net *gn = nf_generic_pernet(net);
struct nf_proto_net *pn = &gn->pn;
gn->timeout = nf_ct_generic_timeout; gn->timeout = nf_ct_generic_timeout;
return generic_kmemdup_sysctl_table(pn, gn); return 0;
} }
static struct nf_proto_net *generic_get_net_proto(struct net *net) static struct nf_proto_net *generic_get_net_proto(struct net *net)
......
...@@ -313,46 +313,6 @@ gre_timeout_nla_policy[CTA_TIMEOUT_GRE_MAX+1] = { ...@@ -313,46 +313,6 @@ gre_timeout_nla_policy[CTA_TIMEOUT_GRE_MAX+1] = {
}; };
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
#ifdef CONFIG_SYSCTL
static struct ctl_table gre_sysctl_table[] = {
{
.procname = "nf_conntrack_gre_timeout",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_gre_timeout_stream",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{}
};
#endif
static int gre_kmemdup_sysctl_table(struct net *net)
{
#ifdef CONFIG_SYSCTL
struct nf_gre_net *net_gre = gre_pernet(net);
struct nf_proto_net *nf = &net_gre->nf;
int i;
if (nf->ctl_table)
return 0;
nf->ctl_table = kmemdup(gre_sysctl_table,
sizeof(gre_sysctl_table),
GFP_KERNEL);
if (!nf->ctl_table)
return -ENOMEM;
for (i = 0; i < GRE_CT_MAX; i++)
nf->ctl_table[i].data = &net_gre->timeouts[i];
#endif
return 0;
}
static int gre_init_net(struct net *net) static int gre_init_net(struct net *net)
{ {
struct nf_gre_net *net_gre = gre_pernet(net); struct nf_gre_net *net_gre = gre_pernet(net);
...@@ -362,7 +322,7 @@ static int gre_init_net(struct net *net) ...@@ -362,7 +322,7 @@ static int gre_init_net(struct net *net)
for (i = 0; i < GRE_CT_MAX; i++) for (i = 0; i < GRE_CT_MAX; i++)
net_gre->timeouts[i] = gre_timeouts[i]; net_gre->timeouts[i] = gre_timeouts[i];
return gre_kmemdup_sysctl_table(net); return 0;
} }
/* protocol helper struct */ /* protocol helper struct */
......
...@@ -298,41 +298,14 @@ icmp_timeout_nla_policy[CTA_TIMEOUT_ICMP_MAX+1] = { ...@@ -298,41 +298,14 @@ icmp_timeout_nla_policy[CTA_TIMEOUT_ICMP_MAX+1] = {
}; };
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
#ifdef CONFIG_SYSCTL
static struct ctl_table icmp_sysctl_table[] = {
{
.procname = "nf_conntrack_icmp_timeout",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{ }
};
#endif /* CONFIG_SYSCTL */
static int icmp_kmemdup_sysctl_table(struct nf_proto_net *pn,
struct nf_icmp_net *in)
{
#ifdef CONFIG_SYSCTL
pn->ctl_table = kmemdup(icmp_sysctl_table,
sizeof(icmp_sysctl_table),
GFP_KERNEL);
if (!pn->ctl_table)
return -ENOMEM;
pn->ctl_table[0].data = &in->timeout;
#endif
return 0;
}
static int icmp_init_net(struct net *net) static int icmp_init_net(struct net *net)
{ {
struct nf_icmp_net *in = nf_icmp_pernet(net); struct nf_icmp_net *in = nf_icmp_pernet(net);
struct nf_proto_net *pn = &in->pn;
in->timeout = nf_ct_icmp_timeout; in->timeout = nf_ct_icmp_timeout;
return icmp_kmemdup_sysctl_table(pn, in); return 0;
} }
static struct nf_proto_net *icmp_get_net_proto(struct net *net) static struct nf_proto_net *icmp_get_net_proto(struct net *net)
......
...@@ -309,41 +309,14 @@ icmpv6_timeout_nla_policy[CTA_TIMEOUT_ICMPV6_MAX+1] = { ...@@ -309,41 +309,14 @@ icmpv6_timeout_nla_policy[CTA_TIMEOUT_ICMPV6_MAX+1] = {
}; };
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
#ifdef CONFIG_SYSCTL
static struct ctl_table icmpv6_sysctl_table[] = {
{
.procname = "nf_conntrack_icmpv6_timeout",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{ }
};
#endif /* CONFIG_SYSCTL */
static int icmpv6_kmemdup_sysctl_table(struct nf_proto_net *pn,
struct nf_icmp_net *in)
{
#ifdef CONFIG_SYSCTL
pn->ctl_table = kmemdup(icmpv6_sysctl_table,
sizeof(icmpv6_sysctl_table),
GFP_KERNEL);
if (!pn->ctl_table)
return -ENOMEM;
pn->ctl_table[0].data = &in->timeout;
#endif
return 0;
}
static int icmpv6_init_net(struct net *net) static int icmpv6_init_net(struct net *net)
{ {
struct nf_icmp_net *in = nf_icmpv6_pernet(net); struct nf_icmp_net *in = nf_icmpv6_pernet(net);
struct nf_proto_net *pn = &in->pn;
in->timeout = nf_ct_icmpv6_timeout; in->timeout = nf_ct_icmpv6_timeout;
return icmpv6_kmemdup_sysctl_table(pn, in); return 0;
} }
static struct nf_proto_net *icmpv6_get_net_proto(struct net *net) static struct nf_proto_net *icmpv6_get_net_proto(struct net *net)
......
...@@ -642,93 +642,6 @@ sctp_timeout_nla_policy[CTA_TIMEOUT_SCTP_MAX+1] = { ...@@ -642,93 +642,6 @@ sctp_timeout_nla_policy[CTA_TIMEOUT_SCTP_MAX+1] = {
}; };
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
#ifdef CONFIG_SYSCTL
static struct ctl_table sctp_sysctl_table[] = {
{
.procname = "nf_conntrack_sctp_timeout_closed",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_cookie_wait",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_cookie_echoed",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_established",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_shutdown_sent",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_shutdown_recd",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_shutdown_ack_sent",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_heartbeat_sent",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_heartbeat_acked",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{ }
};
#endif
static int sctp_kmemdup_sysctl_table(struct nf_proto_net *pn,
struct nf_sctp_net *sn)
{
#ifdef CONFIG_SYSCTL
if (pn->ctl_table)
return 0;
pn->ctl_table = kmemdup(sctp_sysctl_table,
sizeof(sctp_sysctl_table),
GFP_KERNEL);
if (!pn->ctl_table)
return -ENOMEM;
pn->ctl_table[0].data = &sn->timeouts[SCTP_CONNTRACK_CLOSED];
pn->ctl_table[1].data = &sn->timeouts[SCTP_CONNTRACK_COOKIE_WAIT];
pn->ctl_table[2].data = &sn->timeouts[SCTP_CONNTRACK_COOKIE_ECHOED];
pn->ctl_table[3].data = &sn->timeouts[SCTP_CONNTRACK_ESTABLISHED];
pn->ctl_table[4].data = &sn->timeouts[SCTP_CONNTRACK_SHUTDOWN_SENT];
pn->ctl_table[5].data = &sn->timeouts[SCTP_CONNTRACK_SHUTDOWN_RECD];
pn->ctl_table[6].data = &sn->timeouts[SCTP_CONNTRACK_SHUTDOWN_ACK_SENT];
pn->ctl_table[7].data = &sn->timeouts[SCTP_CONNTRACK_HEARTBEAT_SENT];
pn->ctl_table[8].data = &sn->timeouts[SCTP_CONNTRACK_HEARTBEAT_ACKED];
#endif
return 0;
}
static int sctp_init_net(struct net *net) static int sctp_init_net(struct net *net)
{ {
struct nf_sctp_net *sn = nf_sctp_pernet(net); struct nf_sctp_net *sn = nf_sctp_pernet(net);
...@@ -746,7 +659,7 @@ static int sctp_init_net(struct net *net) ...@@ -746,7 +659,7 @@ static int sctp_init_net(struct net *net)
sn->timeouts[0] = sctp_timeouts[SCTP_CONNTRACK_CLOSED]; sn->timeouts[0] = sctp_timeouts[SCTP_CONNTRACK_CLOSED];
} }
return sctp_kmemdup_sysctl_table(pn, sn); return 0;
} }
static struct nf_proto_net *sctp_get_net_proto(struct net *net) static struct nf_proto_net *sctp_get_net_proto(struct net *net)
......
...@@ -1387,120 +1387,6 @@ static const struct nla_policy tcp_timeout_nla_policy[CTA_TIMEOUT_TCP_MAX+1] = { ...@@ -1387,120 +1387,6 @@ static const struct nla_policy tcp_timeout_nla_policy[CTA_TIMEOUT_TCP_MAX+1] = {
}; };
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
#ifdef CONFIG_SYSCTL
static struct ctl_table tcp_sysctl_table[] = {
{
.procname = "nf_conntrack_tcp_timeout_syn_sent",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_tcp_timeout_syn_recv",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_tcp_timeout_established",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_tcp_timeout_fin_wait",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_tcp_timeout_close_wait",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_tcp_timeout_last_ack",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_tcp_timeout_time_wait",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_tcp_timeout_close",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_tcp_timeout_max_retrans",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_tcp_timeout_unacknowledged",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_tcp_loose",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "nf_conntrack_tcp_be_liberal",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "nf_conntrack_tcp_max_retrans",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{ }
};
#endif /* CONFIG_SYSCTL */
static int tcp_kmemdup_sysctl_table(struct nf_proto_net *pn,
struct nf_tcp_net *tn)
{
#ifdef CONFIG_SYSCTL
if (pn->ctl_table)
return 0;
pn->ctl_table = kmemdup(tcp_sysctl_table,
sizeof(tcp_sysctl_table),
GFP_KERNEL);
if (!pn->ctl_table)
return -ENOMEM;
pn->ctl_table[0].data = &tn->timeouts[TCP_CONNTRACK_SYN_SENT];
pn->ctl_table[1].data = &tn->timeouts[TCP_CONNTRACK_SYN_RECV];
pn->ctl_table[2].data = &tn->timeouts[TCP_CONNTRACK_ESTABLISHED];
pn->ctl_table[3].data = &tn->timeouts[TCP_CONNTRACK_FIN_WAIT];
pn->ctl_table[4].data = &tn->timeouts[TCP_CONNTRACK_CLOSE_WAIT];
pn->ctl_table[5].data = &tn->timeouts[TCP_CONNTRACK_LAST_ACK];
pn->ctl_table[6].data = &tn->timeouts[TCP_CONNTRACK_TIME_WAIT];
pn->ctl_table[7].data = &tn->timeouts[TCP_CONNTRACK_CLOSE];
pn->ctl_table[8].data = &tn->timeouts[TCP_CONNTRACK_RETRANS];
pn->ctl_table[9].data = &tn->timeouts[TCP_CONNTRACK_UNACK];
pn->ctl_table[10].data = &tn->tcp_loose;
pn->ctl_table[11].data = &tn->tcp_be_liberal;
pn->ctl_table[12].data = &tn->tcp_max_retrans;
#endif
return 0;
}
static int tcp_init_net(struct net *net) static int tcp_init_net(struct net *net)
{ {
struct nf_tcp_net *tn = nf_tcp_pernet(net); struct nf_tcp_net *tn = nf_tcp_pernet(net);
...@@ -1521,7 +1407,7 @@ static int tcp_init_net(struct net *net) ...@@ -1521,7 +1407,7 @@ static int tcp_init_net(struct net *net)
tn->tcp_max_retrans = nf_ct_tcp_max_retrans; tn->tcp_max_retrans = nf_ct_tcp_max_retrans;
} }
return tcp_kmemdup_sysctl_table(pn, tn); return 0;
} }
static struct nf_proto_net *tcp_get_net_proto(struct net *net) static struct nf_proto_net *tcp_get_net_proto(struct net *net)
......
...@@ -260,40 +260,6 @@ udp_timeout_nla_policy[CTA_TIMEOUT_UDP_MAX+1] = { ...@@ -260,40 +260,6 @@ udp_timeout_nla_policy[CTA_TIMEOUT_UDP_MAX+1] = {
}; };
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
#ifdef CONFIG_SYSCTL
static struct ctl_table udp_sysctl_table[] = {
{
.procname = "nf_conntrack_udp_timeout",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_udp_timeout_stream",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{ }
};
#endif /* CONFIG_SYSCTL */
static int udp_kmemdup_sysctl_table(struct nf_proto_net *pn,
struct nf_udp_net *un)
{
#ifdef CONFIG_SYSCTL
if (pn->ctl_table)
return 0;
pn->ctl_table = kmemdup(udp_sysctl_table,
sizeof(udp_sysctl_table),
GFP_KERNEL);
if (!pn->ctl_table)
return -ENOMEM;
pn->ctl_table[0].data = &un->timeouts[UDP_CT_UNREPLIED];
pn->ctl_table[1].data = &un->timeouts[UDP_CT_REPLIED];
#endif
return 0;
}
static int udp_init_net(struct net *net) static int udp_init_net(struct net *net)
{ {
...@@ -307,7 +273,7 @@ static int udp_init_net(struct net *net) ...@@ -307,7 +273,7 @@ static int udp_init_net(struct net *net)
un->timeouts[i] = udp_timeouts[i]; un->timeouts[i] = udp_timeouts[i];
} }
return udp_kmemdup_sysctl_table(pn, un); return 0;
} }
static struct nf_proto_net *udp_get_net_proto(struct net *net) static struct nf_proto_net *udp_get_net_proto(struct net *net)
......
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