1 files changed, 1 insertions, 0 deletions

diff --git a/syscall.h b/syscall.h
index 764b46f..0378c53 100644
--- a/syscall.h
+++ b/syscall.h
@@ -6,3 +6,4 @@
 #define SYS_write 6
 #define SYS_read 7
 #define SYS_close 8
+#define SYS_block 9