diff options
Diffstat (limited to 'include/linux/user_namespace.h')
| -rw-r--r-- | include/linux/user_namespace.h | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h index 3fe714da7f5a..d6b74b91096b 100644 --- a/include/linux/user_namespace.h +++ b/include/linux/user_namespace.h @@ -11,15 +11,24 @@ #include <linux/sysctl.h> #include <linux/err.h> -#define UID_GID_MAP_MAX_EXTENTS 5 +#define UID_GID_MAP_MAX_BASE_EXTENTS 5 +#define UID_GID_MAP_MAX_EXTENTS 340 -struct uid_gid_map { /* 64 bytes -- 1 cache line */ +struct uid_gid_extent { + u32 first; + u32 lower_first; + u32 count; +}; + +struct uid_gid_map { /* 64 bytes -- 1 cache line */ u32 nr_extents; - struct uid_gid_extent { - u32 first; - u32 lower_first; - u32 count; - } extent[UID_GID_MAP_MAX_EXTENTS]; + union { + struct uid_gid_extent extent[UID_GID_MAP_MAX_BASE_EXTENTS]; + struct { + struct uid_gid_extent *forward; + struct uid_gid_extent *reverse; + }; + }; }; #define USERNS_SETGROUPS_ALLOWED 1UL |