sysctl: Move the implementation into fs/proc/proc_sysctl.c

Move the core sysctl code from kernel/sysctl.c and kernel/sysctl_check.c
into fs/proc/proc_sysctl.c.

Currently sysctl maintenance is hampered by the sysctl implementation
being split across 3 files with artificial layering between them.
Consolidate the entire sysctl implementation into 1 file so that
it is easier to see what is going on and hopefully allowing for
simpler maintenance.

For functions that are now only used in fs/proc/proc_sysctl.c remove
their declarations from sysctl.h and make them static in fs/proc/proc_sysctl.c

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

1 files changed, 0 insertions, 16 deletions

diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 5e3532e9599f..08cabbfddacb 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -1073,17 +1073,6 @@ extern void setup_sysctl_set(struct ctl_table_set *p,
         struct ctl_table_set *parent,
         int (*is_seen)(struct ctl_table_set *));
 
-extern void sysctl_head_get(struct ctl_table_header *);
-extern void sysctl_head_put(struct ctl_table_header *);
-extern int sysctl_is_seen(struct ctl_table_header *);
-extern struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *);
-extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev);
-extern struct ctl_table_header *__sysctl_head_next(struct nsproxy *namespaces,
-                                                struct ctl_table_header *prev);
-extern void sysctl_head_finish(struct ctl_table_header *prev);
-extern int sysctl_perm(struct ctl_table_root *root,
-                struct ctl_table *table, int op);
-
 void register_sysctl_root(struct ctl_table_root *root);
 struct ctl_table_header *__register_sysctl_paths(
         struct ctl_table_root *root, struct nsproxy *namespaces,
@@ -1093,7 +1082,6 @@ struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
                                                 struct ctl_table *table);
 
 void unregister_sysctl_table(struct ctl_table_header * table);
-int sysctl_check_table(struct nsproxy *namespaces, struct ctl_table *table);
 
 extern int sysctl_init(void);
 #else /* CONFIG_SYSCTL */
@@ -1118,10 +1106,6 @@ static inline void setup_sysctl_set(struct ctl_table_set *p,
 {
 }
 
-static inline void sysctl_head_put(struct ctl_table_header *head)
-{
-}
-
 #endif /* CONFIG_SYSCTL */
 
 #endif /* __KERNEL__ */