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Subject[PATCH 17/24] sysctl: add register_net_sysctl_table_with_parent
Date
Signed-off-by: Lucian Adrian Grijincu <lucian.grijincu@gmail.com>
---
include/net/net_namespace.h | 3 +++
net/sysctl_net.c | 20 +++++++++++++++++---
2 files changed, 20 insertions(+), 3 deletions(-)
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 86c6e57..dd4d3cf 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -272,6 +272,9 @@ struct ctl_path;
struct ctl_table;
struct ctl_table_header;

+extern struct ctl_table_header *register_net_sysctl_table_with_parent(
+ struct net *net, const struct ctl_path *path,
+ struct ctl_table *table, struct ctl_table_header *parent);
extern struct ctl_table_header *register_net_sysctl_table(struct net *net,
const struct ctl_path *path, struct ctl_table *table);
extern struct ctl_table_header *register_net_sysctl_rotable(
diff --git a/net/sysctl_net.c b/net/sysctl_net.c
index aa6c6f4..a4f853a 100644
--- a/net/sysctl_net.c
+++ b/net/sysctl_net.c
@@ -103,14 +103,28 @@ out:
}
subsys_initcall(sysctl_init);

-struct ctl_table_header *register_net_sysctl_table(struct net *net,
- const struct ctl_path *path, struct ctl_table *table)
+/* The newly created ctl_table_header will be a member of the parent's
+ * private_children list. The following restrictions apply:
+ * - the children must be freed before the parent
+ * - the children are assumed to be unique (no duplicate checks)
+ * - the children are not listed under attached_to/attached_by
+ * - you cannot attach another node under a private child. */
+struct ctl_table_header *register_net_sysctl_table_with_parent(struct net *net,
+ const struct ctl_path *path, struct ctl_table *table,
+ struct ctl_table_header *parent)
{
struct nsproxy namespaces;
namespaces = *current->nsproxy;
namespaces.net_ns = net;
return __register_sysctl_paths(&net_sysctl_root, &namespaces, path,
- table, net, NULL);
+ table, net, parent);
+}
+EXPORT_SYMBOL_GPL(register_net_sysctl_table_with_parent);
+
+struct ctl_table_header *register_net_sysctl_table(struct net *net,
+ const struct ctl_path *path, struct ctl_table *table)
+{
+ return register_net_sysctl_table_with_parent(net, path, table, NULL);
}
EXPORT_SYMBOL_GPL(register_net_sysctl_table);

--
1.7.5.rc0


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