[NETFILTER]: Replate direct proc_fops assignment with proc_create call.

This elliminates infamous race during module loading when one could lookup
proc entry without proc_fops assigned.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c
index fe05da4..4dc1628 100644 (file)
--- a/net/ipv4/netfilter/ip_queue.c
+++ b/net/ipv4/netfilter/ip_queue.c
@@ -588,11 +588,9 @@ static int __init ip_queue_init(void)
        }
 
 #ifdef CONFIG_PROC_FS
-       proc = create_proc_entry(IPQ_PROC_FS_NAME, 0, init_net.proc_net);
-       if (proc) {
-               proc->owner = THIS_MODULE;
-               proc->proc_fops = &ip_queue_proc_fops;
-       } else {
+       proc = proc_create(IPQ_PROC_FS_NAME, 0, init_net.proc_net,
+                          &ip_queue_proc_fops);
+       if (!proc) {
                printk(KERN_ERR "ip_queue: failed to create proc entry\n");
                goto cleanup_ipqnl;
        }

diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index c6cf84c..52926c8 100644 (file)
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -167,14 +167,13 @@ clusterip_config_init(struct ipt_clusterip_tgt_info *i, __be32 ip,
 
                /* create proc dir entry */
                sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(ip));
-               c->pde = create_proc_entry(buffer, S_IWUSR|S_IRUSR,
-                                          clusterip_procdir);
+               c->pde = proc_create(buffer, S_IWUSR|S_IRUSR,
+                                    clusterip_procdir, &clusterip_proc_fops);
                if (!c->pde) {
                        kfree(c);
                        return NULL;
                }
        }
-       c->pde->proc_fops = &clusterip_proc_fops;
        c->pde->data = c;
 #endif
 

diff --git a/net/ipv4/netfilter/ipt_recent.c b/net/ipv4/netfilter/ipt_recent.c
index 8e8f042..50e0669 100644 (file)
--- a/net/ipv4/netfilter/ipt_recent.c
+++ b/net/ipv4/netfilter/ipt_recent.c
@@ -276,12 +276,11 @@ recent_mt_check(const char *tablename, const void *ip,
        for (i = 0; i < ip_list_hash_size; i++)
                INIT_LIST_HEAD(&t->iphash[i]);
 #ifdef CONFIG_PROC_FS
-       t->proc = create_proc_entry(t->name, ip_list_perms, proc_dir);
+       t->proc = proc_create(t->name, ip_list_perms, proc_dir, &recent_fops);
        if (t->proc == NULL) {
                kfree(t);
                goto out;
        }
-       t->proc->proc_fops = &recent_fops;
        t->proc->uid       = ip_list_uid;
        t->proc->gid       = ip_list_gid;
        t->proc->data      = t;

diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
index 089252e..f500b0f 100644 (file)
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
@@ -395,13 +395,10 @@ int __init nf_conntrack_ipv4_compat_init(void)
        if (!proc_exp)
                goto err2;
 
-       proc_stat = create_proc_entry("ip_conntrack", S_IRUGO, init_net.proc_net_stat);
+       proc_stat = proc_create("ip_conntrack", S_IRUGO,
+                               init_net.proc_net_stat, &ct_cpu_seq_fops);
        if (!proc_stat)
                goto err3;
-
-       proc_stat->proc_fops = &ct_cpu_seq_fops;
-       proc_stat->owner = THIS_MODULE;
-
        return 0;
 
 err3:

diff --git a/net/ipv6/netfilter/ip6_queue.c b/net/ipv6/netfilter/ip6_queue.c
index cc2f9af..8d366f7 100644 (file)
--- a/net/ipv6/netfilter/ip6_queue.c
+++ b/net/ipv6/netfilter/ip6_queue.c
@@ -591,11 +591,9 @@ static int __init ip6_queue_init(void)
        }
 
 #ifdef CONFIG_PROC_FS
-       proc = create_proc_entry(IPQ_PROC_FS_NAME, 0, init_net.proc_net);
-       if (proc) {
-               proc->owner = THIS_MODULE;
-               proc->proc_fops = &ip6_queue_proc_fops;
-       } else {
+       proc = proc_create(IPQ_PROC_FS_NAME, 0, init_net.proc_net,
+                          &ip6_queue_proc_fops);
+       if (!proc) {
                printk(KERN_ERR "ip6_queue: failed to create proc entry\n");
                goto cleanup_ipqnl;
        }

diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index e88e96a..8599068 100644 (file)
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -395,7 +395,7 @@ EXPORT_SYMBOL_GPL(nf_ct_log_invalid);
 static int __init nf_conntrack_standalone_init(void)
 {
 #ifdef CONFIG_PROC_FS
-       struct proc_dir_entry *proc, *proc_stat;
+       struct proc_dir_entry *proc;
 #endif
        int ret = 0;
 
@@ -407,12 +407,9 @@ static int __init nf_conntrack_standalone_init(void)
        proc = proc_net_fops_create(&init_net, "nf_conntrack", 0440, &ct_file_ops);
        if (!proc) goto cleanup_init;
 
-       proc_stat = create_proc_entry("nf_conntrack", S_IRUGO, init_net.proc_net_stat);
-       if (!proc_stat)
+       if (!proc_create("nf_conntrack", S_IRUGO,
+                        init_net.proc_net_stat, &ct_cpu_seq_fops))
                goto cleanup_proc;
-
-       proc_stat->proc_fops = &ct_cpu_seq_fops;
-       proc_stat->owner = THIS_MODULE;
 #endif
 #ifdef CONFIG_SYSCTL
        nf_ct_sysctl_header = register_sysctl_paths(nf_ct_path,

diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index cec9976..bc11d70 100644 (file)
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -168,13 +168,9 @@ static const struct file_operations nflog_file_ops = {
 int __init netfilter_log_init(void)
 {
 #ifdef CONFIG_PROC_FS
-       struct proc_dir_entry *pde;
-
-       pde = create_proc_entry("nf_log", S_IRUGO, proc_net_netfilter);
-       if (!pde)
+       if (!proc_create("nf_log", S_IRUGO,
+                        proc_net_netfilter, &nflog_file_ops))
                return -1;
-
-       pde->proc_fops = &nflog_file_ops;
 #endif
        return 0;
 }

diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
index ddc80ea..bbd2689 100644 (file)
--- a/net/netfilter/nf_queue.c
+++ b/net/netfilter/nf_queue.c
@@ -348,12 +348,9 @@ static const struct file_operations nfqueue_file_ops = {
 int __init netfilter_queue_init(void)
 {
 #ifdef CONFIG_PROC_FS
-       struct proc_dir_entry *pde;
-
-       pde = create_proc_entry("nf_queue", S_IRUGO, proc_net_netfilter);
-       if (!pde)
+       if (!proc_create("nf_queue", S_IRUGO,
+                        proc_net_netfilter, &nfqueue_file_ops))
                return -1;
-       pde->proc_fops = &nfqueue_file_ops;
 #endif
        return 0;
 }

diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index bf3f19b..b8173af 100644 (file)
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -923,9 +923,6 @@ static const struct file_operations nful_file_ops = {
 static int __init nfnetlink_log_init(void)
 {
        int i, status = -ENOMEM;
-#ifdef CONFIG_PROC_FS
-       struct proc_dir_entry *proc_nful;
-#endif
 
        for (i = 0; i < INSTANCE_BUCKETS; i++)
                INIT_HLIST_HEAD(&instance_table[i]);
@@ -943,11 +940,9 @@ static int __init nfnetlink_log_init(void)
        }
 
 #ifdef CONFIG_PROC_FS
-       proc_nful = create_proc_entry("nfnetlink_log", 0440,
-                                     proc_net_netfilter);
-       if (!proc_nful)
+       if (!proc_create("nfnetlink_log", 0440,
+                        proc_net_netfilter, &nful_file_ops))
                goto cleanup_subsys;
-       proc_nful->proc_fops = &nful_file_ops;
 #endif
        return status;
 

diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index 012cb69..10522c0 100644 (file)
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -896,9 +896,6 @@ static const struct file_operations nfqnl_file_ops = {
 static int __init nfnetlink_queue_init(void)
 {
        int i, status = -ENOMEM;
-#ifdef CONFIG_PROC_FS
-       struct proc_dir_entry *proc_nfqueue;
-#endif
 
        for (i = 0; i < INSTANCE_BUCKETS; i++)
                INIT_HLIST_HEAD(&instance_table[i]);
@@ -911,11 +908,9 @@ static int __init nfnetlink_queue_init(void)
        }
 
 #ifdef CONFIG_PROC_FS
-       proc_nfqueue = create_proc_entry("nfnetlink_queue", 0440,
-                                        proc_net_netfilter);
-       if (!proc_nfqueue)
+       if (!proc_create("nfnetlink_queue", 0440,
+                        proc_net_netfilter, &nfqnl_file_ops))
                goto cleanup_subsys;
-       proc_nfqueue->proc_fops = &nfqnl_file_ops;
 #endif
 
        register_netdevice_notifier(&nfqnl_dev_notifier);

diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 5418ce5..dc29007 100644 (file)
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -237,14 +237,14 @@ static int htable_create_v0(struct xt_hashlimit_info *minfo, int family)
        hinfo->family = family;
        hinfo->rnd_initialized = 0;
        spin_lock_init(&hinfo->lock);
-       hinfo->pde = create_proc_entry(minfo->name, 0,
-                                      family == AF_INET ? hashlimit_procdir4 :
-                                                          hashlimit_procdir6);
+       hinfo->pde = proc_create(minfo->name, 0,
+                                family == AF_INET ? hashlimit_procdir4 :
+                                                    hashlimit_procdir6,
+                                &dl_file_ops);
        if (!hinfo->pde) {
                vfree(hinfo);
                return -1;
        }
-       hinfo->pde->proc_fops = &dl_file_ops;
        hinfo->pde->data = hinfo;
 
        setup_timer(&hinfo->timer, htable_gc, (unsigned long )hinfo);
@@ -301,14 +301,14 @@ static int htable_create(struct xt_hashlimit_mtinfo1 *minfo,
        hinfo->rnd_initialized = 0;
        spin_lock_init(&hinfo->lock);
 
-       hinfo->pde = create_proc_entry(minfo->name, 0,
-                                      family == AF_INET ? hashlimit_procdir4 :
-                                                          hashlimit_procdir6);
+       hinfo->pde = proc_create(minfo->name, 0,
+                                family == AF_INET ? hashlimit_procdir4 :
+                                                    hashlimit_procdir6,
+                                &dl_file_ops);
        if (hinfo->pde == NULL) {
                vfree(hinfo);
                return -1;
        }
-       hinfo->pde->proc_fops = &dl_file_ops;
        hinfo->pde->data = hinfo;
 
        setup_timer(&hinfo->timer, htable_gc, (unsigned long)hinfo);