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linux-sg2042
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net: Move all of the network sysctls without a namespace into init_net. 

This makes it clearer which sysctls are relative to your current network
namespace.

This makes it a little less error prone by not exposing sysctls for the
initial network namespace in other namespaces.

This is the same way we handle all of our other network interfaces to
userspace and I can't honestly remember why we didn't do this for
sysctls right from the start.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman 2012-04-19 13:24:33 +00:00 committed by David S. Miller
parent 4344475797
commit 5dd3df105b
31 changed files with 60 additions and 58 deletions
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4
drivers/infiniband/core/ucma.c
View File

@ -1392,7 +1392,7 @@ static int __init ucma_init(void)
goto err1;
}
ucma_ctl_table_hdr = register_sysctl_paths(ucma_ctl_path, ucma_ctl_table);
ucma_ctl_table_hdr = register_net_sysctl_table(&init_net, ucma_ctl_path, ucma_ctl_table);
if (!ucma_ctl_table_hdr) {
printk(KERN_ERR "rdma_ucm: couldn't register sysctl paths\n");
ret = -ENOMEM;
@ -1408,7 +1408,7 @@ err1:
static void __exit ucma_cleanup(void)
{
unregister_sysctl_table(ucma_ctl_table_hdr);
unregister_net_sysctl_table(ucma_ctl_table_hdr);
device_remove_file(ucma_misc.this_device, &dev_attr_abi_version);
misc_deregister(&ucma_misc);
idr_destroy(&ctx_idr);

2
net/802/tr.c
View File

@ -662,7 +662,7 @@ static int __init rif_init(void)
setup_timer(&rif_timer, rif_check_expire, 0);
add_timer(&rif_timer);
#ifdef CONFIG_SYSCTL
register_sysctl_paths(tr_path, tr_table);
register_net_sysctl_table(&init_net, tr_path, tr_table);
#endif
proc_net_fops_create(&init_net, "tr_rif", S_IRUGO, &rif_seq_fops);
return 0;

4
net/appletalk/sysctl_net_atalk.c
View File

@ -52,10 +52,10 @@ static struct ctl_table_header *atalk_table_header;
void atalk_register_sysctl(void)
{
atalk_table_header = register_sysctl_paths(atalk_path, atalk_table);
atalk_table_header = register_net_sysctl_table(&init_net, atalk_path, atalk_table);
}
void atalk_unregister_sysctl(void)
{
unregister_sysctl_table(atalk_table_header);
unregister_net_sysctl_table(atalk_table_header);
}

4
net/ax25/sysctl_net_ax25.c
View File

@ -196,13 +196,13 @@ void ax25_register_sysctl(void)
}
spin_unlock_bh(&ax25_dev_lock);
ax25_table_header = register_sysctl_paths(ax25_path, ax25_table);
ax25_table_header = register_net_sysctl_table(&init_net, ax25_path, ax25_table);
}
void ax25_unregister_sysctl(void)
{
ctl_table *p;
unregister_sysctl_table(ax25_table_header);
unregister_net_sysctl_table(ax25_table_header);
for (p = ax25_table; p->procname; p++)
kfree(p->child);

4
net/bridge/br_netfilter.c
View File

@ -1030,7 +1030,7 @@ int __init br_netfilter_init(void)
return ret;
}
#ifdef CONFIG_SYSCTL
brnf_sysctl_header = register_sysctl_paths(brnf_path, brnf_table);
brnf_sysctl_header = register_net_sysctl_table(&init_net, brnf_path, brnf_table);
if (brnf_sysctl_header == NULL) {
printk(KERN_WARNING
"br_netfilter: can't register to sysctl.\n");
@ -1047,7 +1047,7 @@ void br_netfilter_fini(void)
{
nf_unregister_hooks(br_nf_ops, ARRAY_SIZE(br_nf_ops));
#ifdef CONFIG_SYSCTL
unregister_sysctl_table(brnf_sysctl_header);
unregister_net_sysctl_table(brnf_sysctl_header);
#endif
dst_entries_destroy(&fake_dst_ops);
}

2
net/core/neighbour.c
View File

@ -3017,7 +3017,7 @@ void neigh_sysctl_unregister(struct neigh_parms *p)
if (p->sysctl_table) {
struct neigh_sysctl_table *t = p->sysctl_table;
p->sysctl_table = NULL;
unregister_sysctl_table(t->sysctl_header);
unregister_net_sysctl_table(t->sysctl_header);
kfree(t->dev_name);
kfree(t);
}

2
net/core/sysctl_net_core.c
View File

@ -257,7 +257,7 @@ static __init int sysctl_core_init(void)
{
static struct ctl_table empty[1];
kmemleak_not_leak(register_sysctl_paths(net_core_path, empty));
kmemleak_not_leak(register_net_sysctl_table(&init_net, net_core_path, empty));
register_net_sysctl(&init_net, "net/core", net_core_table);
return register_pernet_subsys(&sysctl_core_ops);
}

4
net/dccp/sysctl.c
View File

@ -109,7 +109,7 @@ static struct ctl_table_header *dccp_table_header;
int __init dccp_sysctl_init(void)
{
dccp_table_header = register_sysctl_paths(dccp_path,
dccp_table_header = register_net_sysctl_table(&init_net, dccp_path,
dccp_default_table);
return dccp_table_header != NULL ? 0 : -ENOMEM;
@ -118,7 +118,7 @@ int __init dccp_sysctl_init(void)
void dccp_sysctl_exit(void)
{
if (dccp_table_header != NULL) {
unregister_sysctl_table(dccp_table_header);
unregister_net_sysctl_table(dccp_table_header);
dccp_table_header = NULL;
}
}

4
net/decnet/dn_dev.c
View File

@ -236,7 +236,7 @@ static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *
t->dn_dev_vars[0].extra1 = (void *)dev;
t->sysctl_header = register_sysctl_paths(dn_ctl_path, t->dn_dev_vars);
t->sysctl_header = register_net_sysctl_table(&init_net, dn_ctl_path, t->dn_dev_vars);
if (t->sysctl_header == NULL)
kfree(t);
else
@ -248,7 +248,7 @@ static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms)
if (parms->sysctl) {
struct dn_dev_sysctl_table *t = parms->sysctl;
parms->sysctl = NULL;
unregister_sysctl_table(t->sysctl_header);
unregister_net_sysctl_table(t->sysctl_header);
kfree(t);
}
}

4
net/decnet/sysctl_net_decnet.c
View File

@ -359,12 +359,12 @@ static struct ctl_path dn_path[] = {
void dn_register_sysctl(void)
{
dn_table_header = register_sysctl_paths(dn_path, dn_table);
dn_table_header = register_net_sysctl_table(&init_net, dn_path, dn_table);
}
void dn_unregister_sysctl(void)
{
unregister_sysctl_table(dn_table_header);
unregister_net_sysctl_table(dn_table_header);
}
#else /* CONFIG_SYSCTL */

6
net/ipv4/netfilter/ip_queue.c
View File

@ -586,7 +586,7 @@ static int __init ip_queue_init(void)
#endif
register_netdevice_notifier(&ipq_dev_notifier);
#ifdef CONFIG_SYSCTL
ipq_sysctl_header = register_sysctl_paths(net_ipv4_ctl_path, ipq_table);
ipq_sysctl_header = register_net_sysctl_table(&init_net, net_ipv4_ctl_path, ipq_table);
#endif
status = nf_register_queue_handler(NFPROTO_IPV4, &nfqh);
if (status < 0) {
@ -597,7 +597,7 @@ static int __init ip_queue_init(void)
cleanup_sysctl:
#ifdef CONFIG_SYSCTL
unregister_sysctl_table(ipq_sysctl_header);
unregister_net_sysctl_table(ipq_sysctl_header);
#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
@ -618,7 +618,7 @@ static void __exit ip_queue_fini(void)
ipq_flush(NULL, 0);
#ifdef CONFIG_SYSCTL
unregister_sysctl_table(ipq_sysctl_header);
unregister_net_sysctl_table(ipq_sysctl_header);
#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);

2
net/ipv4/route.c
View File

@ -3515,6 +3515,6 @@ int __init ip_rt_init(void)
*/
void __init ip_static_sysctl_init(void)
{
kmemleak_not_leak(register_sysctl_paths(ipv4_path, ipv4_skeleton));
kmemleak_not_leak(register_net_sysctl_table(&init_net, ipv4_path, ipv4_skeleton));
}
#endif

4
net/ipv4/sysctl_net_ipv4.c
View File

@ -857,12 +857,12 @@ static __init int sysctl_ipv4_init(void)
if (!i->procname)
return -EINVAL;
hdr = register_sysctl_paths(net_ipv4_ctl_path, ipv4_table);
hdr = register_net_sysctl_table(&init_net, net_ipv4_ctl_path, ipv4_table);
if (hdr == NULL)
return -ENOMEM;
if (register_pernet_subsys(&ipv4_sysctl_ops)) {
unregister_sysctl_table(hdr);
unregister_net_sysctl_table(hdr);
return -ENOMEM;
}

6
net/ipv6/netfilter/ip6_queue.c
View File

@ -588,7 +588,7 @@ static int __init ip6_queue_init(void)
#endif
register_netdevice_notifier(&ipq_dev_notifier);
#ifdef CONFIG_SYSCTL
ipq_sysctl_header = register_sysctl_paths(net_ipv6_ctl_path, ipq_table);
ipq_sysctl_header = register_net_sysctl_table(&init_net, net_ipv6_ctl_path, ipq_table);
#endif
status = nf_register_queue_handler(NFPROTO_IPV6, &nfqh);
if (status < 0) {
@ -599,7 +599,7 @@ static int __init ip6_queue_init(void)
cleanup_sysctl:
#ifdef CONFIG_SYSCTL
unregister_sysctl_table(ipq_sysctl_header);
unregister_net_sysctl_table(ipq_sysctl_header);
#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
@ -621,7 +621,7 @@ static void __exit ip6_queue_fini(void)
ipq_flush(NULL, 0);
#ifdef CONFIG_SYSCTL
unregister_sysctl_table(ipq_sysctl_header);
unregister_net_sysctl_table(ipq_sysctl_header);
#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);

4
net/ipv6/netfilter/nf_conntrack_reasm.c
View File

@ -626,7 +626,7 @@ int nf_ct_frag6_init(void)
inet_frags_init(&nf_frags);
#ifdef CONFIG_SYSCTL
nf_ct_frag6_sysctl_header = register_sysctl_paths(nf_net_netfilter_sysctl_path,
nf_ct_frag6_sysctl_header = register_net_sysctl_table(&init_net, nf_net_netfilter_sysctl_path,
nf_ct_frag6_sysctl_table);
if (!nf_ct_frag6_sysctl_header) {
inet_frags_fini(&nf_frags);
@ -640,7 +640,7 @@ int nf_ct_frag6_init(void)
void nf_ct_frag6_cleanup(void)
{
#ifdef CONFIG_SYSCTL
unregister_sysctl_table(nf_ct_frag6_sysctl_header);
unregister_net_sysctl_table(nf_ct_frag6_sysctl_header);
nf_ct_frag6_sysctl_header = NULL;
#endif
inet_frags_fini(&nf_frags);

2
net/ipv6/sysctl_net_ipv6.c
View File

@ -165,7 +165,7 @@ static struct ctl_table_header *ip6_base;
int ipv6_static_sysctl_register(void)
{
ip6_base = register_sysctl_paths(net_ipv6_ctl_path, ipv6_static_skeleton);
ip6_base = register_net_sysctl_table(&init_net, net_ipv6_ctl_path, ipv6_static_skeleton);
if (ip6_base == NULL)
return -ENOMEM;
return 0;

5
net/ipx/sysctl_net_ipx.c
View File

@ -8,6 +8,7 @@
#include <linux/mm.h>
#include <linux/sysctl.h>
#include <net/net_namespace.h>
#ifndef CONFIG_SYSCTL
#error This file should not be compiled without CONFIG_SYSCTL defined
@ -37,10 +38,10 @@ static struct ctl_table_header *ipx_table_header;
void ipx_register_sysctl(void)
{
ipx_table_header = register_sysctl_paths(ipx_path, ipx_table);
ipx_table_header = register_net_sysctl_table(&init_net, ipx_path, ipx_table);
}
void ipx_unregister_sysctl(void)
{
unregister_sysctl_table(ipx_table_header);
unregister_net_sysctl_table(ipx_table_header);
}

4
net/irda/irsysctl.c
View File

@ -251,7 +251,7 @@ static struct ctl_table_header *irda_table_header;
*/
int __init irda_sysctl_register(void)
{
irda_table_header = register_sysctl_paths(irda_path, irda_table);
irda_table_header = register_net_sysctl_table(&init_net, irda_path, irda_table);
if (!irda_table_header)
return -ENOMEM;
@ -266,7 +266,7 @@ int __init irda_sysctl_register(void)
*/
void irda_sysctl_unregister(void)
{
unregister_sysctl_table(irda_table_header);
unregister_net_sysctl_table(irda_table_header);
}

5
net/llc/sysctl_net_llc.c
View File

@ -7,6 +7,7 @@
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/sysctl.h>
#include <net/net_namespace.h>
#include <net/llc.h>
#ifndef CONFIG_SYSCTL
@ -89,7 +90,7 @@ static struct ctl_table_header *llc_table_header;
int __init llc_sysctl_init(void)
{
llc_table_header = register_sysctl_paths(llc_path, llc_table);
llc_table_header = register_net_sysctl_table(&init_net, llc_path, llc_table);
return llc_table_header ? 0 : -ENOMEM;
}
@ -97,7 +98,7 @@ int __init llc_sysctl_init(void)
void llc_sysctl_exit(void)
{
if (llc_table_header) {
unregister_sysctl_table(llc_table_header);
unregister_net_sysctl_table(llc_table_header);
llc_table_header = NULL;
}
}

4
net/netfilter/nf_conntrack_proto.c
View File

@ -40,7 +40,7 @@ nf_ct_register_sysctl(struct ctl_table_header **header, struct ctl_path *path,
struct ctl_table *table, unsigned int *users)
{
if (*header == NULL) {
*header = register_sysctl_paths(path, table);
*header = register_net_sysctl_table(&init_net, path, table);
if (*header == NULL)
return -ENOMEM;
}
@ -56,7 +56,7 @@ nf_ct_unregister_sysctl(struct ctl_table_header **header,
if (users != NULL && --*users > 0)
return;
unregister_sysctl_table(*header);
unregister_net_sysctl_table(*header);
*header = NULL;
}
#endif

6
net/netfilter/nf_conntrack_standalone.c
View File

@ -479,7 +479,7 @@ static int nf_conntrack_standalone_init_sysctl(struct net *net)
if (net_eq(net, &init_net)) {
nf_ct_netfilter_header =
register_sysctl_paths(nf_ct_path, nf_ct_netfilter_table);
register_net_sysctl_table(&init_net, nf_ct_path, nf_ct_netfilter_table);
if (!nf_ct_netfilter_header)
goto out;
}
@ -505,7 +505,7 @@ out_unregister_netfilter:
kfree(table);
out_kmemdup:
if (net_eq(net, &init_net))
unregister_sysctl_table(nf_ct_netfilter_header);
unregister_net_sysctl_table(nf_ct_netfilter_header);
out:
printk(KERN_ERR "nf_conntrack: can't register to sysctl.\n");
return -ENOMEM;
@ -516,7 +516,7 @@ static void nf_conntrack_standalone_fini_sysctl(struct net *net)
struct ctl_table *table;
if (net_eq(net, &init_net))
unregister_sysctl_table(nf_ct_netfilter_header);
unregister_net_sysctl_table(nf_ct_netfilter_header);
table = net->ct.sysctl_header->ctl_table_arg;
unregister_net_sysctl_table(net->ct.sysctl_header);
kfree(table);

2
net/netfilter/nf_log.c
View File

@ -283,7 +283,7 @@ static __init int netfilter_log_sysctl_init(void)
nf_log_sysctl_table[i].extra1 = (void *)(unsigned long) i;
}
nf_log_dir_header = register_sysctl_paths(nf_log_sysctl_path,
nf_log_dir_header = register_net_sysctl_table(&init_net, nf_log_sysctl_path,
nf_log_sysctl_table);
if (!nf_log_dir_header)
return -ENOMEM;

4
net/netrom/sysctl_net_netrom.c
View File

@ -154,10 +154,10 @@ static struct ctl_path nr_path[] = {
void __init nr_register_sysctl(void)
{
nr_table_header = register_sysctl_paths(nr_path, nr_table);
nr_table_header = register_net_sysctl_table(&init_net, nr_path, nr_table);
}
void nr_unregister_sysctl(void)
{
unregister_sysctl_table(nr_table_header);
unregister_net_sysctl_table(nr_table_header);
}

4
net/phonet/sysctl.c
View File

@ -106,11 +106,11 @@ static struct ctl_path phonet_ctl_path[] = {
int __init phonet_sysctl_init(void)
{
phonet_table_hrd = register_sysctl_paths(phonet_ctl_path, phonet_table);
phonet_table_hrd = register_net_sysctl_table(&init_net, phonet_ctl_path, phonet_table);
return phonet_table_hrd == NULL ? -ENOMEM : 0;
}
void phonet_sysctl_exit(void)
{
unregister_sysctl_table(phonet_table_hrd);
unregister_net_sysctl_table(phonet_table_hrd);
}

4
net/rds/ib_sysctl.c
View File

@ -116,12 +116,12 @@ static struct ctl_path rds_ib_sysctl_path[] = {
void rds_ib_sysctl_exit(void)
{
if (rds_ib_sysctl_hdr)
unregister_sysctl_table(rds_ib_sysctl_hdr);
unregister_net_sysctl_table(rds_ib_sysctl_hdr);
}
int rds_ib_sysctl_init(void)
{
rds_ib_sysctl_hdr = register_sysctl_paths(rds_ib_sysctl_path, rds_ib_sysctl_table);
rds_ib_sysctl_hdr = register_net_sysctl_table(&init_net, rds_ib_sysctl_path, rds_ib_sysctl_table);
if (!rds_ib_sysctl_hdr)
return -ENOMEM;
return 0;

4
net/rds/iw_sysctl.c
View File

@ -119,12 +119,12 @@ static struct ctl_path rds_iw_sysctl_path[] = {
void rds_iw_sysctl_exit(void)
{
if (rds_iw_sysctl_hdr)
unregister_sysctl_table(rds_iw_sysctl_hdr);
unregister_net_sysctl_table(rds_iw_sysctl_hdr);
}
int rds_iw_sysctl_init(void)
{
rds_iw_sysctl_hdr = register_sysctl_paths(rds_iw_sysctl_path, rds_iw_sysctl_table);
rds_iw_sysctl_hdr = register_net_sysctl_table(&init_net, rds_iw_sysctl_path, rds_iw_sysctl_table);
if (!rds_iw_sysctl_hdr)
return -ENOMEM;
return 0;

4
net/rds/sysctl.c
View File

@ -102,7 +102,7 @@ static struct ctl_path rds_sysctl_path[] = {
void rds_sysctl_exit(void)
{
if (rds_sysctl_reg_table)
unregister_sysctl_table(rds_sysctl_reg_table);
unregister_net_sysctl_table(rds_sysctl_reg_table);
}
int rds_sysctl_init(void)
@ -110,7 +110,7 @@ int rds_sysctl_init(void)
rds_sysctl_reconnect_min = msecs_to_jiffies(1);
rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
rds_sysctl_reg_table = register_sysctl_paths(rds_sysctl_path, rds_sysctl_rds_table);
rds_sysctl_reg_table = register_net_sysctl_table(&init_net, rds_sysctl_path, rds_sysctl_rds_table);
if (!rds_sysctl_reg_table)
return -ENOMEM;
return 0;

4
net/rose/sysctl_net_rose.c
View File

@ -126,10 +126,10 @@ static struct ctl_path rose_path[] = {
void __init rose_register_sysctl(void)
{
rose_table_header = register_sysctl_paths(rose_path, rose_table);
rose_table_header = register_net_sysctl_table(&init_net, rose_path, rose_table);
}
void rose_unregister_sysctl(void)
{
unregister_sysctl_table(rose_table_header);
unregister_net_sysctl_table(rose_table_header);
}

4
net/sctp/sysctl.c
View File

@ -286,11 +286,11 @@ static struct ctl_table_header * sctp_sysctl_header;
/* Sysctl registration. */
void sctp_sysctl_register(void)
{
sctp_sysctl_header = register_sysctl_paths(sctp_path, sctp_table);
sctp_sysctl_header = register_net_sysctl_table(&init_net, sctp_path, sctp_table);
}
/* Sysctl deregistration. */
void sctp_sysctl_unregister(void)
{
unregister_sysctl_table(sctp_sysctl_header);
unregister_net_sysctl_table(sctp_sysctl_header);
}

2
net/unix/sysctl_net_unix.c
View File

@ -58,6 +58,6 @@ void unix_sysctl_unregister(struct net *net)
struct ctl_table *table;
table = net->unx.ctl->ctl_table_arg;
unregister_sysctl_table(net->unx.ctl);
unregister_net_sysctl_table(net->unx.ctl);
kfree(table);
}

4
net/x25/sysctl_net_x25.c
View File

@ -81,10 +81,10 @@ static struct ctl_path x25_path[] = {
void __init x25_register_sysctl(void)
{
x25_table_header = register_sysctl_paths(x25_path, x25_table);
x25_table_header = register_net_sysctl_table(&init_net, x25_path, x25_table);
}
void x25_unregister_sysctl(void)
{
unregister_sysctl_table(x25_table_header);
unregister_net_sysctl_table(x25_table_header);
}