userns: use union in {g,u}idmap struct
- Add a struct containing two pointer to extents and wrap both the static extent
array and the struct into a union. This is done in preparation for bumping the
{g,u}idmap limits for user namespaces.
- Add brackets around anonymous union when using designated initializers to
initialize members in order to please gcc <= 4.4.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
diff --git a/kernel/user.c b/kernel/user.c
index 00281ad..9a20acc 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -26,26 +26,32 @@
struct user_namespace init_user_ns = {
.uid_map = {
.nr_extents = 1,
- .extent[0] = {
- .first = 0,
- .lower_first = 0,
- .count = 4294967295U,
+ {
+ .extent[0] = {
+ .first = 0,
+ .lower_first = 0,
+ .count = 4294967295U,
+ },
},
},
.gid_map = {
.nr_extents = 1,
- .extent[0] = {
- .first = 0,
- .lower_first = 0,
- .count = 4294967295U,
+ {
+ .extent[0] = {
+ .first = 0,
+ .lower_first = 0,
+ .count = 4294967295U,
+ },
},
},
.projid_map = {
.nr_extents = 1,
- .extent[0] = {
- .first = 0,
- .lower_first = 0,
- .count = 4294967295U,
+ {
+ .extent[0] = {
+ .first = 0,
+ .lower_first = 0,
+ .count = 4294967295U,
+ },
},
},
.count = ATOMIC_INIT(3),