diff options
| author | Tyler Hicks <tyhicks@canonical.com> | 2018-07-20 21:56:53 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-20 23:44:36 -0700 |
| commit | fbdeaed408cf2728c62640c10848ddb1b67e63d3 (patch) | |
| tree | 4c06f4a43d4516e7f1f83db877f4f4c49b01077f /include/net/net_namespace.h | |
| parent | b0e37c0d8a6abed0cd1b611314a7ebf50b0a8ed4 (diff) | |
net: create reusable function for getting ownership info of sysfs inodes
Make net_ns_get_ownership() reusable by networking code outside of core.
This is useful, for example, to allow bridge related sysfs files to be
owned by container root.
Add a function comment since this is a potentially dangerous function to
use given the way that kobject_get_ownership() works by initializing uid
and gid before calling .get_ownership().
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/net_namespace.h')
| -rw-r--r-- | include/net/net_namespace.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h index a71264d75d7f..9b5fdc50519a 100644 --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -10,6 +10,7 @@ #include <linux/workqueue.h> #include <linux/list.h> #include <linux/sysctl.h> +#include <linux/uidgid.h> #include <net/flow.h> #include <net/netns/core.h> @@ -170,6 +171,8 @@ extern struct net init_net; struct net *copy_net_ns(unsigned long flags, struct user_namespace *user_ns, struct net *old_net); +void net_ns_get_ownership(const struct net *net, kuid_t *uid, kgid_t *gid); + void net_ns_barrier(void); #else /* CONFIG_NET_NS */ #include <linux/sched.h> @@ -182,6 +185,13 @@ static inline struct net *copy_net_ns(unsigned long flags, return old_net; } +static inline void net_ns_get_ownership(const struct net *net, + kuid_t *uid, kgid_t *gid) +{ + *uid = GLOBAL_ROOT_UID; + *gid = GLOBAL_ROOT_GID; +} + static inline void net_ns_barrier(void) {} #endif /* CONFIG_NET_NS */ |