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proc: consolidate per-net single_open callers 

There are already 7 of them - time to kill some duplicate code.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2008-07-18 04:07:21 -07:00 committed by David S. Miller
parent 60bdde9580
commit de05c557b2
6 changed files with 33 additions and 108 deletions
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24
fs/proc/proc_net.c
View File

@ -51,6 +51,30 @@ int seq_open_net(struct inode *ino, struct file *f,
}
EXPORT_SYMBOL_GPL(seq_open_net);
int single_open_net(struct inode *inode, struct file *file,
int (*show)(struct seq_file *, void *))
{
int err;
struct net *net;
err = -ENXIO;
net = get_proc_net(inode);
if (net == NULL)
goto err_net;
err = single_open(file, show, net);
if (err < 0)
goto err_open;
return 0;
err_open:
put_net(net);
err_net:
return err;
}
EXPORT_SYMBOL_GPL(single_open_net);
int seq_release_net(struct inode *ino, struct file *f)
{
struct seq_file *seq;

2
include/linux/seq_file_net.h
View File

@ -14,6 +14,8 @@ struct seq_net_private {
int seq_open_net(struct inode *, struct file *,
const struct seq_operations *, int);
int single_open_net(struct inode *, struct file *file,
int (*show)(struct seq_file *, void *));
int seq_release_net(struct inode *, struct file *);
static inline struct net *seq_file_net(struct seq_file *seq)
{

13
net/ipv4/fib_trie.c
View File

@ -2251,18 +2251,7 @@ static int fib_triestat_seq_show(struct seq_file *seq, void *v)
static int fib_triestat_seq_open(struct inode *inode, struct file *file)
{
int err;
struct net *net;
net = get_proc_net(inode);
if (net == NULL)
return -ENXIO;
err = single_open(file, fib_triestat_seq_show, net);
if (err < 0) {
put_net(net);
return err;
}
return 0;
return single_open_net(inode, file, fib_triestat_seq_show);
}
static int fib_triestat_seq_release(struct inode *ino, struct file *f)

57
net/ipv4/proc.c
View File

@ -71,24 +71,7 @@ static int sockstat_seq_show(struct seq_file *seq, void *v)
static int sockstat_seq_open(struct inode *inode, struct file *file)
{
int err;
struct net *net;
err = -ENXIO;
net = get_proc_net(inode);
if (net == NULL)
goto err_net;
err = single_open(file, sockstat_seq_show, net);
if (err < 0)
goto err_open;
return 0;
err_open:
put_net(net);
err_net:
return err;
return single_open_net(inode, file, sockstat_seq_show);
}
static int sockstat_seq_release(struct inode *inode, struct file *file)
@ -397,24 +380,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
static int snmp_seq_open(struct inode *inode, struct file *file)
{
int err;
struct net *net;
err = -ENXIO;
net = get_proc_net(inode);
if (net == NULL)
goto err_net;
err = single_open(file, snmp_seq_show, net);
if (err < 0)
goto err_open;
return 0;
err_open:
put_net(net);
err_net:
return err;
return single_open_net(inode, file, snmp_seq_show);
}
static int snmp_seq_release(struct inode *inode, struct file *file)
@ -469,24 +435,7 @@ static int netstat_seq_show(struct seq_file *seq, void *v)
static int netstat_seq_open(struct inode *inode, struct file *file)
{
int err;
struct net *net;
err = -ENXIO;
net = get_proc_net(inode);
if (net == NULL)
goto err_net;
err = single_open(file, netstat_seq_show, net);
if (err < 0)
goto err_open;
return 0;
err_open:
put_net(net);
err_net:
return err;
return single_open_net(inode, file, netstat_seq_show);
}
static int netstat_seq_release(struct inode *inode, struct file *file)

19
net/ipv6/proc.c
View File

@ -183,24 +183,7 @@ static int snmp6_seq_show(struct seq_file *seq, void *v)
static int sockstat6_seq_open(struct inode *inode, struct file *file)
{
int err;
struct net *net;
err = -ENXIO;
net = get_proc_net(inode);
if (net == NULL)
goto err_net;
err = single_open(file, sockstat6_seq_show, net);
if (err < 0)
goto err_open;
return 0;
err_open:
put_net(net);
err_net:
return err;
return single_open_net(inode, file, sockstat6_seq_show);
}
static int sockstat6_seq_release(struct inode *inode, struct file *file)

26
net/ipv6/route.c
View File

@ -2416,18 +2416,7 @@ static int ipv6_route_show(struct seq_file *m, void *v)
static int ipv6_route_open(struct inode *inode, struct file *file)
{
int err;
struct net *net = get_proc_net(inode);
if (!net)
return -ENXIO;
err = single_open(file, ipv6_route_show, net);
if (err < 0) {
put_net(net);
return err;
}
return 0;
return single_open_net(inode, file, ipv6_route_show);
}
static int ipv6_route_release(struct inode *inode, struct file *file)
@ -2463,18 +2452,7 @@ static int rt6_stats_seq_show(struct seq_file *seq, void *v)
static int rt6_stats_seq_open(struct inode *inode, struct file *file)
{
int err;
struct net *net = get_proc_net(inode);
if (!net)
return -ENXIO;
err = single_open(file, rt6_stats_seq_show, net);
if (err < 0) {
put_net(net);
return err;
}
return 0;
return single_open_net(inode, file, rt6_stats_seq_show);
}
static int rt6_stats_seq_release(struct inode *inode, struct file *file)