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Subject[PATCH 21/29] sysctl: Add a root pointer to ctl_table_set
Date
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>
---
fs/proc/proc_sysctl.c | 3 +++
include/linux/sysctl.h | 3 +++
net/sysctl_net.c | 5 ++---
3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index d9c3ae6..65c13dd 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -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;
}

diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index e40b8f6..e73ba33 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -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 *))
{
}
diff --git a/net/sysctl_net.c b/net/sysctl_net.c
index 07c6b87..e998c64 100644
--- a/net/sysctl_net.c
+++ b/net/sysctl_net.c
@@ -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:
--
1.7.2.5


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