proc: introduce proc_create_net_single
Variant of proc_create_data that directly take a seq_file show
callback and deals with network namespaces in ->open and ->release.
All callers of proc_create + single_open_net converted over, and
single_{open,release}_net are removed entirely.
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index a058de6..573e43c 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -77,18 +77,6 @@ static int sockstat_seq_show(struct seq_file *seq, void *v)
return 0;
}
-static int sockstat_seq_open(struct inode *inode, struct file *file)
-{
- return single_open_net(inode, file, sockstat_seq_show);
-}
-
-static const struct file_operations sockstat_seq_fops = {
- .open = sockstat_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release_net,
-};
-
/* snmp items */
static const struct snmp_mib snmp4_ipstats_list[] = {
SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INPKTS),
@@ -460,20 +448,6 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
return 0;
}
-static int snmp_seq_open(struct inode *inode, struct file *file)
-{
- return single_open_net(inode, file, snmp_seq_show);
-}
-
-static const struct file_operations snmp_seq_fops = {
- .open = snmp_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release_net,
-};
-
-
-
/*
* Output /proc/net/netstat
*/
@@ -507,26 +481,16 @@ static int netstat_seq_show(struct seq_file *seq, void *v)
return 0;
}
-static int netstat_seq_open(struct inode *inode, struct file *file)
-{
- return single_open_net(inode, file, netstat_seq_show);
-}
-
-static const struct file_operations netstat_seq_fops = {
- .open = netstat_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release_net,
-};
-
static __net_init int ip_proc_init_net(struct net *net)
{
- if (!proc_create("sockstat", 0444, net->proc_net,
- &sockstat_seq_fops))
+ if (!proc_create_net_single("sockstat", 0444, net->proc_net,
+ sockstat_seq_show, NULL))
goto out_sockstat;
- if (!proc_create("netstat", 0444, net->proc_net, &netstat_seq_fops))
+ if (!proc_create_net_single("netstat", 0444, net->proc_net,
+ netstat_seq_show, NULL))
goto out_netstat;
- if (!proc_create("snmp", 0444, net->proc_net, &snmp_seq_fops))
+ if (!proc_create_net_single("snmp", 0444, net->proc_net, snmp_seq_show,
+ NULL))
goto out_snmp;
return 0;
