[NET]: Consolidate net namespace related proc files creation.
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Родитель
097e66c578
Коммит
e372c41401
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@ -22,10 +22,48 @@
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#include <linux/mount.h>
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#include <linux/nsproxy.h>
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#include <net/net_namespace.h>
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#include <linux/seq_file.h>
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#include "internal.h"
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int seq_open_net(struct inode *ino, struct file *f,
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const struct seq_operations *ops, int size)
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{
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struct net *net;
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struct seq_net_private *p;
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BUG_ON(size < sizeof(*p));
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net = get_proc_net(ino);
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if (net == NULL)
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return -ENXIO;
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p = __seq_open_private(f, ops, size);
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if (p == NULL) {
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put_net(net);
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return -ENOMEM;
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}
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p->net = net;
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return 0;
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}
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EXPORT_SYMBOL_GPL(seq_open_net);
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int seq_release_net(struct inode *ino, struct file *f)
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{
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struct seq_file *seq;
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struct seq_net_private *p;
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seq = f->private_data;
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p = seq->private;
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put_net(p->net);
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seq_release_private(ino, f);
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return 0;
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}
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EXPORT_SYMBOL_GPL(seq_release_net);
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struct proc_dir_entry *proc_net_fops_create(struct net *net,
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const char *name, mode_t mode, const struct file_operations *fops)
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{
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@ -63,5 +63,18 @@ extern struct list_head *seq_list_start_head(struct list_head *head,
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extern struct list_head *seq_list_next(void *v, struct list_head *head,
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loff_t *ppos);
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struct net;
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struct seq_net_private {
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struct net *net;
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};
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int seq_open_net(struct inode *, struct file *,
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const struct seq_operations *, int);
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int seq_release_net(struct inode *, struct file *);
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static inline struct net *seq_file_net(struct seq_file *seq)
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{
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return ((struct seq_net_private *)seq->private)->net;
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}
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#endif
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#endif
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@ -2364,7 +2364,7 @@ static int dev_ifconf(struct net *net, char __user *arg)
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*/
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void *dev_seq_start(struct seq_file *seq, loff_t *pos)
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{
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struct net *net = seq->private;
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struct net *net = seq_file_net(seq);
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loff_t off;
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struct net_device *dev;
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@ -2382,7 +2382,7 @@ void *dev_seq_start(struct seq_file *seq, loff_t *pos)
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void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct net *net = seq->private;
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struct net *net = seq_file_net(seq);
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++*pos;
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return v == SEQ_START_TOKEN ?
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first_net_device(net) : next_net_device((struct net_device *)v);
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@ -2481,26 +2481,8 @@ static const struct seq_operations dev_seq_ops = {
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static int dev_seq_open(struct inode *inode, struct file *file)
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{
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struct seq_file *seq;
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int res;
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res = seq_open(file, &dev_seq_ops);
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if (!res) {
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seq = file->private_data;
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seq->private = get_proc_net(inode);
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if (!seq->private) {
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seq_release(inode, file);
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res = -ENXIO;
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}
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}
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return res;
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}
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static int dev_seq_release(struct inode *inode, struct file *file)
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{
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struct seq_file *seq = file->private_data;
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struct net *net = seq->private;
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put_net(net);
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return seq_release(inode, file);
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return seq_open_net(inode, file, &dev_seq_ops,
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sizeof(struct seq_net_private));
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}
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static const struct file_operations dev_seq_fops = {
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@ -2508,7 +2490,7 @@ static const struct file_operations dev_seq_fops = {
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.open = dev_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = dev_seq_release,
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.release = seq_release_net,
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};
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static const struct seq_operations softnet_seq_ops = {
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@ -187,7 +187,7 @@ EXPORT_SYMBOL(dev_mc_unsync);
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#ifdef CONFIG_PROC_FS
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static void *dev_mc_seq_start(struct seq_file *seq, loff_t *pos)
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{
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struct net *net = seq->private;
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struct net *net = seq_file_net(seq);
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struct net_device *dev;
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loff_t off = 0;
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@ -241,26 +241,8 @@ static const struct seq_operations dev_mc_seq_ops = {
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static int dev_mc_seq_open(struct inode *inode, struct file *file)
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{
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struct seq_file *seq;
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int res;
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res = seq_open(file, &dev_mc_seq_ops);
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if (!res) {
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seq = file->private_data;
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seq->private = get_proc_net(inode);
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if (!seq->private) {
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seq_release(inode, file);
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res = -ENXIO;
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}
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}
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return res;
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}
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static int dev_mc_seq_release(struct inode *inode, struct file *file)
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{
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struct seq_file *seq = file->private_data;
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struct net *net = seq->private;
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put_net(net);
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return seq_release(inode, file);
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return seq_open_net(inode, file, &dev_mc_seq_ops,
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sizeof(struct seq_net_private));
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}
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static const struct file_operations dev_mc_seq_fops = {
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@ -268,7 +250,7 @@ static const struct file_operations dev_mc_seq_fops = {
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.open = dev_mc_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = dev_mc_seq_release,
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.release = seq_release_net,
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};
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#endif
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@ -1681,7 +1681,7 @@ int nlmsg_notify(struct sock *sk, struct sk_buff *skb, u32 pid,
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#ifdef CONFIG_PROC_FS
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struct nl_seq_iter {
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struct net *net;
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struct seq_net_private p;
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int link;
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int hash_idx;
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};
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@ -1699,7 +1699,7 @@ static struct sock *netlink_seq_socket_idx(struct seq_file *seq, loff_t pos)
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for (j = 0; j <= hash->mask; j++) {
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sk_for_each(s, node, &hash->table[j]) {
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if (iter->net != s->sk_net)
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if (iter->p.net != s->sk_net)
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continue;
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if (off == pos) {
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iter->link = i;
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@ -1734,7 +1734,7 @@ static void *netlink_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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s = v;
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do {
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s = sk_next(s);
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} while (s && (iter->net != s->sk_net));
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} while (s && (iter->p.net != s->sk_net));
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if (s)
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return s;
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@ -1746,7 +1746,7 @@ static void *netlink_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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for (; j <= hash->mask; j++) {
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s = sk_head(&hash->table[j]);
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while (s && (iter->net != s->sk_net))
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while (s && (iter->p.net != s->sk_net))
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s = sk_next(s);
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if (s) {
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iter->link = i;
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@ -1802,27 +1802,8 @@ static const struct seq_operations netlink_seq_ops = {
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static int netlink_seq_open(struct inode *inode, struct file *file)
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{
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struct nl_seq_iter *iter;
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iter = __seq_open_private(file, &netlink_seq_ops, sizeof(*iter));
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if (!iter)
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return -ENOMEM;
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iter->net = get_proc_net(inode);
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if (!iter->net) {
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seq_release_private(inode, file);
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return -ENXIO;
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}
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return 0;
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}
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static int netlink_seq_release(struct inode *inode, struct file *file)
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{
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struct seq_file *seq = file->private_data;
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struct nl_seq_iter *iter = seq->private;
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put_net(iter->net);
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return seq_release_private(inode, file);
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return seq_open_net(inode, file, &netlink_seq_ops,
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sizeof(struct nl_seq_iter));
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}
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static const struct file_operations netlink_seq_fops = {
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@ -1830,7 +1811,7 @@ static const struct file_operations netlink_seq_fops = {
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.open = netlink_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = netlink_seq_release,
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.release = seq_release_net,
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};
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#endif
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@ -1871,7 +1871,7 @@ static inline struct sock *packet_seq_idx(struct net *net, loff_t off)
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static void *packet_seq_start(struct seq_file *seq, loff_t *pos)
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{
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struct net *net = seq->private;
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struct net *net = seq_file_net(seq);
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read_lock(&net->packet_sklist_lock);
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return *pos ? packet_seq_idx(net, *pos - 1) : SEQ_START_TOKEN;
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}
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@ -1924,26 +1924,8 @@ static const struct seq_operations packet_seq_ops = {
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static int packet_seq_open(struct inode *inode, struct file *file)
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{
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struct seq_file *seq;
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int res;
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res = seq_open(file, &packet_seq_ops);
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if (!res) {
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seq = file->private_data;
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seq->private = get_proc_net(inode);
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if (!seq->private) {
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seq_release(inode, file);
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res = -ENXIO;
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}
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}
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return res;
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}
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static int packet_seq_release(struct inode *inode, struct file *file)
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{
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struct seq_file *seq= file->private_data;
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struct net *net = seq->private;
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put_net(net);
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return seq_release(inode, file);
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return seq_open_net(inode, file, &packet_seq_ops,
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sizeof(struct seq_net_private));
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}
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static const struct file_operations packet_seq_fops = {
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@ -1951,7 +1933,7 @@ static const struct file_operations packet_seq_fops = {
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.open = packet_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = packet_seq_release,
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.release = seq_release_net,
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};
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#endif
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@ -2018,7 +2018,7 @@ static unsigned int unix_poll(struct file * file, struct socket *sock, poll_tabl
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#ifdef CONFIG_PROC_FS
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struct unix_iter_state {
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struct net *net;
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struct seq_net_private p;
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int i;
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};
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static struct sock *unix_seq_idx(struct unix_iter_state *iter, loff_t pos)
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@ -2027,7 +2027,7 @@ static struct sock *unix_seq_idx(struct unix_iter_state *iter, loff_t pos)
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struct sock *s;
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for (s = first_unix_socket(&iter->i); s; s = next_unix_socket(&iter->i, s)) {
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if (s->sk_net != iter->net)
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if (s->sk_net != iter->p.net)
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continue;
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if (off == pos)
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return s;
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@ -2054,7 +2054,7 @@ static void *unix_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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sk = first_unix_socket(&iter->i);
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else
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sk = next_unix_socket(&iter->i, sk);
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while (sk && (sk->sk_net != iter->net))
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while (sk && (sk->sk_net != iter->p.net))
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sk = next_unix_socket(&iter->i, sk);
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return sk;
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}
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@ -2118,27 +2118,8 @@ static const struct seq_operations unix_seq_ops = {
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static int unix_seq_open(struct inode *inode, struct file *file)
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{
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struct unix_iter_state *it;
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it = __seq_open_private(file, &unix_seq_ops,
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sizeof(struct unix_iter_state));
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if (it == NULL)
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return -ENOMEM;
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it->net = get_proc_net(inode);
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if (it->net == NULL) {
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seq_release_private(inode, file);
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return -ENXIO;
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}
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return 0;
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}
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static int unix_seq_release(struct inode *inode, struct file *file)
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{
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struct seq_file *seq = file->private_data;
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struct unix_iter_state *iter = seq->private;
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put_net(iter->net);
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return seq_release_private(inode, file);
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return seq_open_net(inode, file, &unix_seq_ops,
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sizeof(struct unix_iter_state));
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}
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static const struct file_operations unix_seq_fops = {
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@ -2146,7 +2127,7 @@ static const struct file_operations unix_seq_fops = {
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.open = unix_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = unix_seq_release,
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.release = seq_release_net,
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};
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#endif
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@ -673,26 +673,8 @@ static const struct seq_operations wireless_seq_ops = {
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static int wireless_seq_open(struct inode *inode, struct file *file)
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{
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struct seq_file *seq;
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int res;
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res = seq_open(file, &wireless_seq_ops);
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if (!res) {
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seq = file->private_data;
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seq->private = get_proc_net(inode);
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if (!seq->private) {
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seq_release(inode, file);
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res = -ENXIO;
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}
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}
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return res;
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}
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static int wireless_seq_release(struct inode *inode, struct file *file)
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{
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struct seq_file *seq = file->private_data;
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struct net *net = seq->private;
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put_net(net);
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return seq_release(inode, file);
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return seq_open_net(inode, file, &wireless_seq_ops,
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sizeof(struct seq_net_private));
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}
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static const struct file_operations wireless_seq_fops = {
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@ -700,7 +682,7 @@ static const struct file_operations wireless_seq_fops = {
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.open = wireless_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = wireless_seq_release,
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.release = seq_release_net,
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};
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int wext_proc_init(struct net *net)
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