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sysctl: Add a root pointer to ctl_table_set

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Add a ctl_table_root pointer to ctl_table set so it is easy to
go from a ctl_table_set to a ctl_table_root.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2012-01-22 21:26:00 -08:00
parent 6a75ce167c
commit 9eb47c26f0
3 changed files with 8 additions and 3 deletions
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3
fs/proc/proc_sysctl.c
View File

@ -45,6 +45,7 @@ static struct ctl_table_header root_table_header = {
static struct ctl_table_root sysctl_table_root = {
.root_list = LIST_HEAD_INIT(sysctl_table_root.root_list),
.default_set.list = LIST_HEAD_INIT(root_table_header.ctl_entry),
.default_set.root = &sysctl_table_root,
};
static DEFINE_SPINLOCK(sysctl_lock);
@ -1348,9 +1349,11 @@ void unregister_sysctl_table(struct ctl_table_header * header)
EXPORT_SYMBOL(unregister_sysctl_table);
void setup_sysctl_set(struct ctl_table_set *p,
struct ctl_table_root *root,
int (*is_seen)(struct ctl_table_set *))
{
INIT_LIST_HEAD(&p->list);
p->root = root;
p->is_seen = is_seen;
}

3
include/linux/sysctl.h
View File

@ -1047,6 +1047,7 @@ struct ctl_table_header
struct ctl_table_set {
struct list_head list;
struct ctl_table_root *root;
int (*is_seen)(struct ctl_table_set *);
};
@ -1069,6 +1070,7 @@ struct ctl_path {
void proc_sys_poll_notify(struct ctl_table_poll *poll);
extern void setup_sysctl_set(struct ctl_table_set *p,
struct ctl_table_root *root,
int (*is_seen)(struct ctl_table_set *));
extern void retire_sysctl_set(struct ctl_table_set *set);
@ -1103,6 +1105,7 @@ static inline void unregister_sysctl_table(struct ctl_table_header * table)
}
static inline void setup_sysctl_set(struct ctl_table_set *p,
struct ctl_table_root *root,
int (*is_seen)(struct ctl_table_set *))
{
}

5
net/sysctl_net.c
View File

@ -74,8 +74,7 @@ static struct ctl_table_root net_sysctl_ro_root = {
static int __net_init sysctl_net_init(struct net *net)
{
setup_sysctl_set(&net->sysctls,
is_seen);
setup_sysctl_set(&net->sysctls, &net_sysctl_root, is_seen);
return 0;
}
@ -95,7 +94,7 @@ static __init int net_sysctl_init(void)
ret = register_pernet_subsys(&sysctl_pernet_ops);
if (ret)
goto out;
setup_sysctl_set(&net_sysctl_ro_root.default_set, NULL);
setup_sysctl_set(&net_sysctl_ro_root.default_set, &net_sysctl_ro_root, NULL);
register_sysctl_root(&net_sysctl_ro_root);
register_sysctl_root(&net_sysctl_root);
out: