1 files changed, 13 insertions, 0 deletions
diff --git a/include/sys/shm.h b/include/sys/shm.h
index 67be822b..e7d39ff6 100644
--- a/include/sys/shm.h
+++ b/include/sys/shm.h
@@ -40,6 +40,19 @@ extern "C" {
 #define SHM_HUGETLB 04000
 #define SHM_NORESERVE 010000
 
+#define SHM_HUGE_SHIFT 26
+#define SHM_HUGE_MASK  0x3f
+#define SHM_HUGE_64KB  (16 << 26)
+#define SHM_HUGE_512KB (19 << 26)
+#define SHM_HUGE_1MB   (20 << 26)
+#define SHM_HUGE_2MB   (21 << 26)
+#define SHM_HUGE_8MB   (23 << 26)
+#define SHM_HUGE_16MB  (24 << 26)
+#define SHM_HUGE_256MB (28 << 26)
+#define SHM_HUGE_1GB   (30 << 26)
+#define SHM_HUGE_2GB   (31 << 26)
+#define SHM_HUGE_16GB  (34U << 26)
+
 typedef unsigned long shmatt_t;
 
 void *shmat(int, const void *, int);