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[NET]: Consolidate net namespace related proc files creation.

Browse source 
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:
Denis V. Lunev 2007-11-19 22:31:54 -08:00 committed by David S. Miller
parent 097e66c578
commit e372c41401
8 changed files with 80 additions and 139 deletions
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38
fs/proc/proc_net.c
View file

@ -22,10 +22,48 @@
#include <linux/mount.h>
#include <linux/nsproxy.h>
#include <net/net_namespace.h>
#include <linux/seq_file.h>
#include "internal.h"
int seq_open_net(struct inode *ino, struct file *f,
const struct seq_operations *ops, int size)
{
struct net *net;
struct seq_net_private *p;
BUG_ON(size < sizeof(*p));
net = get_proc_net(ino);
if (net == NULL)
return -ENXIO;
p = __seq_open_private(f, ops, size);
if (p == NULL) {
put_net(net);
return -ENOMEM;
}
p->net = net;
return 0;
}
EXPORT_SYMBOL_GPL(seq_open_net);
int seq_release_net(struct inode *ino, struct file *f)
{
struct seq_file *seq;
struct seq_net_private *p;
seq = f->private_data;
p = seq->private;
put_net(p->net);
seq_release_private(ino, f);
return 0;
}
EXPORT_SYMBOL_GPL(seq_release_net);
struct proc_dir_entry *proc_net_fops_create(struct net *net,
const char *name, mode_t mode, const struct file_operations *fops)
{

13
include/linux/seq_file.h
View file

@ -63,5 +63,18 @@ extern struct list_head *seq_list_start_head(struct list_head *head,
extern struct list_head *seq_list_next(void *v, struct list_head *head,
loff_t *ppos);
struct net;
struct seq_net_private {
struct net *net;
};
int seq_open_net(struct inode *, struct file *,
const struct seq_operations *, int);
int seq_release_net(struct inode *, struct file *);
static inline struct net *seq_file_net(struct seq_file *seq)
{
return ((struct seq_net_private *)seq->private)->net;
}
#endif
#endif

28
net/core/dev.c
View file

@ -2364,7 +2364,7 @@ static int dev_ifconf(struct net *net, char __user *arg)
*/
void *dev_seq_start(struct seq_file *seq, loff_t *pos)
{
struct net *net = seq->private;
struct net *net = seq_file_net(seq);
loff_t off;
struct net_device *dev;
@ -2382,7 +2382,7 @@ void *dev_seq_start(struct seq_file *seq, loff_t *pos)
void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct net *net = seq->private;
struct net *net = seq_file_net(seq);
++*pos;
return v == SEQ_START_TOKEN ?
first_net_device(net) : next_net_device((struct net_device *)v);
@ -2481,26 +2481,8 @@ static const struct seq_operations dev_seq_ops = {
static int dev_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int res;
res = seq_open(file, &dev_seq_ops);
if (!res) {
seq = file->private_data;
seq->private = get_proc_net(inode);
if (!seq->private) {
seq_release(inode, file);
res = -ENXIO;
}
}
return res;
}
static int dev_seq_release(struct inode *inode, struct file *file)
{
struct seq_file *seq = file->private_data;
struct net *net = seq->private;
put_net(net);
return seq_release(inode, file);
return seq_open_net(inode, file, &dev_seq_ops,
sizeof(struct seq_net_private));
}
static const struct file_operations dev_seq_fops = {
@ -2508,7 +2490,7 @@ static const struct file_operations dev_seq_fops = {
.open = dev_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = dev_seq_release,
.release = seq_release_net,
};
static const struct seq_operations softnet_seq_ops = {

26
net/core/dev_mcast.c
View file

@ -187,7 +187,7 @@ EXPORT_SYMBOL(dev_mc_unsync);
#ifdef CONFIG_PROC_FS
static void *dev_mc_seq_start(struct seq_file *seq, loff_t *pos)
{
struct net *net = seq->private;
struct net *net = seq_file_net(seq);
struct net_device *dev;
loff_t off = 0;
@ -241,26 +241,8 @@ static const struct seq_operations dev_mc_seq_ops = {
static int dev_mc_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int res;
res = seq_open(file, &dev_mc_seq_ops);
if (!res) {
seq = file->private_data;
seq->private = get_proc_net(inode);
if (!seq->private) {
seq_release(inode, file);
res = -ENXIO;
}
}
return res;
}
static int dev_mc_seq_release(struct inode *inode, struct file *file)
{
struct seq_file *seq = file->private_data;
struct net *net = seq->private;
put_net(net);
return seq_release(inode, file);
return seq_open_net(inode, file, &dev_mc_seq_ops,
sizeof(struct seq_net_private));
}
static const struct file_operations dev_mc_seq_fops = {
@ -268,7 +250,7 @@ static const struct file_operations dev_mc_seq_fops = {
.open = dev_mc_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = dev_mc_seq_release,
.release = seq_release_net,
};
#endif

33
net/netlink/af_netlink.c
View file

@ -1681,7 +1681,7 @@ int nlmsg_notify(struct sock *sk, struct sk_buff *skb, u32 pid,
#ifdef CONFIG_PROC_FS
struct nl_seq_iter {
struct net *net;
struct seq_net_private p;
int link;
int hash_idx;
};
@ -1699,7 +1699,7 @@ static struct sock *netlink_seq_socket_idx(struct seq_file *seq, loff_t pos)
for (j = 0; j <= hash->mask; j++) {
sk_for_each(s, node, &hash->table[j]) {
if (iter->net != s->sk_net)
if (iter->p.net != s->sk_net)
continue;
if (off == pos) {
iter->link = i;
@ -1734,7 +1734,7 @@ static void *netlink_seq_next(struct seq_file *seq, void *v, loff_t *pos)
s = v;
do {
s = sk_next(s);
} while (s && (iter->net != s->sk_net));
} while (s && (iter->p.net != s->sk_net));
if (s)
return s;
@ -1746,7 +1746,7 @@ static void *netlink_seq_next(struct seq_file *seq, void *v, loff_t *pos)
for (; j <= hash->mask; j++) {
s = sk_head(&hash->table[j]);
while (s && (iter->net != s->sk_net))
while (s && (iter->p.net != s->sk_net))
s = sk_next(s);
if (s) {
iter->link = i;
@ -1802,27 +1802,8 @@ static const struct seq_operations netlink_seq_ops = {
static int netlink_seq_open(struct inode *inode, struct file *file)
{
struct nl_seq_iter *iter;
iter = __seq_open_private(file, &netlink_seq_ops, sizeof(*iter));
if (!iter)
return -ENOMEM;
iter->net = get_proc_net(inode);
if (!iter->net) {
seq_release_private(inode, file);
return -ENXIO;
}
return 0;
}
static int netlink_seq_release(struct inode *inode, struct file *file)
{
struct seq_file *seq = file->private_data;
struct nl_seq_iter *iter = seq->private;
put_net(iter->net);
return seq_release_private(inode, file);
return seq_open_net(inode, file, &netlink_seq_ops,
sizeof(struct nl_seq_iter));
}
static const struct file_operations netlink_seq_fops = {
@ -1830,7 +1811,7 @@ static const struct file_operations netlink_seq_fops = {
.open = netlink_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = netlink_seq_release,
.release = seq_release_net,
};
#endif

26
net/packet/af_packet.c
View file

@ -1871,7 +1871,7 @@ static inline struct sock *packet_seq_idx(struct net *net, loff_t off)
static void *packet_seq_start(struct seq_file *seq, loff_t *pos)
{
struct net *net = seq->private;
struct net *net = seq_file_net(seq);
read_lock(&net->packet_sklist_lock);
return *pos ? packet_seq_idx(net, *pos - 1) : SEQ_START_TOKEN;
}
@ -1924,26 +1924,8 @@ static const struct seq_operations packet_seq_ops = {
static int packet_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int res;
res = seq_open(file, &packet_seq_ops);
if (!res) {
seq = file->private_data;
seq->private = get_proc_net(inode);
if (!seq->private) {
seq_release(inode, file);
res = -ENXIO;
}
}
return res;
}
static int packet_seq_release(struct inode *inode, struct file *file)
{
struct seq_file *seq= file->private_data;
struct net *net = seq->private;
put_net(net);
return seq_release(inode, file);
return seq_open_net(inode, file, &packet_seq_ops,
sizeof(struct seq_net_private));
}
static const struct file_operations packet_seq_fops = {
@ -1951,7 +1933,7 @@ static const struct file_operations packet_seq_fops = {
.open = packet_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = packet_seq_release,
.release = seq_release_net,
};
#endif

31
net/unix/af_unix.c
View file

@ -2018,7 +2018,7 @@ static unsigned int unix_poll(struct file * file, struct socket *sock, poll_tabl
#ifdef CONFIG_PROC_FS
struct unix_iter_state {
struct net *net;
struct seq_net_private p;
int i;
};
static struct sock *unix_seq_idx(struct unix_iter_state *iter, loff_t pos)
@ -2027,7 +2027,7 @@ static struct sock *unix_seq_idx(struct unix_iter_state *iter, loff_t pos)
struct sock *s;
for (s = first_unix_socket(&iter->i); s; s = next_unix_socket(&iter->i, s)) {
if (s->sk_net != iter->net)
if (s->sk_net != iter->p.net)
continue;
if (off == pos)
return s;
@ -2054,7 +2054,7 @@ static void *unix_seq_next(struct seq_file *seq, void *v, loff_t *pos)
sk = first_unix_socket(&iter->i);
else
sk = next_unix_socket(&iter->i, sk);
while (sk && (sk->sk_net != iter->net))
while (sk && (sk->sk_net != iter->p.net))
sk = next_unix_socket(&iter->i, sk);
return sk;
}
@ -2118,27 +2118,8 @@ static const struct seq_operations unix_seq_ops = {
static int unix_seq_open(struct inode *inode, struct file *file)
{
struct unix_iter_state *it;
it = __seq_open_private(file, &unix_seq_ops,
sizeof(struct unix_iter_state));
if (it == NULL)
return -ENOMEM;
it->net = get_proc_net(inode);
if (it->net == NULL) {
seq_release_private(inode, file);
return -ENXIO;
}
return 0;
}
static int unix_seq_release(struct inode *inode, struct file *file)
{
struct seq_file *seq = file->private_data;
struct unix_iter_state *iter = seq->private;
put_net(iter->net);
return seq_release_private(inode, file);
return seq_open_net(inode, file, &unix_seq_ops,
sizeof(struct unix_iter_state));
}
static const struct file_operations unix_seq_fops = {
@ -2146,7 +2127,7 @@ static const struct file_operations unix_seq_fops = {
.open = unix_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = unix_seq_release,
.release = seq_release_net,
};
#endif

24
net/wireless/wext.c
View file

@ -673,26 +673,8 @@ static const struct seq_operations wireless_seq_ops = {
static int wireless_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int res;
res = seq_open(file, &wireless_seq_ops);
if (!res) {
seq = file->private_data;
seq->private = get_proc_net(inode);
if (!seq->private) {
seq_release(inode, file);
res = -ENXIO;
}
}
return res;
}
static int wireless_seq_release(struct inode *inode, struct file *file)
{
struct seq_file *seq = file->private_data;
struct net *net = seq->private;
put_net(net);
return seq_release(inode, file);
return seq_open_net(inode, file, &wireless_seq_ops,
sizeof(struct seq_net_private));
}
static const struct file_operations wireless_seq_fops = {
@ -700,7 +682,7 @@ static const struct file_operations wireless_seq_fops = {
.open = wireless_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = wireless_seq_release,
.release = seq_release_net,
};
int wext_proc_init(struct net *net)