diff --git a/src/exec.c b/src/exec.c
index 15db093..03cc4d6 100644
--- a/src/exec.c
+++ b/src/exec.c
@@ -24,6 +24,9 @@
 #include "parse.h"
 #include "syscall.h"
 
+static int hyper_release_exec(struct hyper_exec *, struct hyper_pod *);
+static void hyper_exec_process(struct hyper_exec *exec);
+
 static int send_exec_finishing(uint64_t seq, int len, int code, int block)
 {
 	struct hyper_buf *buf = &ctl.tty.wbuf;
@@ -202,7 +205,7 @@ struct hyper_event_ops err_ops = {
 	/* don't need write buff, the stderr data is one way */
 };
 
-int hyper_setup_exec_user(struct hyper_exec *exec)
+static int hyper_setup_exec_user(struct hyper_exec *exec)
 {
 	char *user = exec->user == NULL || strlen(exec->user) == 0 ? NULL : exec->user;
 	char *group = exec->group == NULL || strlen(exec->group) == 0 ? NULL : exec->group;
@@ -333,7 +336,7 @@ static int hyper_setup_exec_notty(struct hyper_exec *e)
 	return 0;
 }
 
-int hyper_setup_exec_tty(struct hyper_exec *e)
+static int hyper_setup_exec_tty(struct hyper_exec *e)
 {
 	int unlock = 0;
 	int ptymaster;
@@ -410,7 +413,7 @@ int hyper_setup_exec_tty(struct hyper_exec *e)
 	return 0;
 }
 
-int hyper_dup_exec_tty(struct hyper_exec *e)
+static int hyper_dup_exec_tty(struct hyper_exec *e)
 {
 	int ret = -1;
 
@@ -457,7 +460,7 @@ out:
 	return ret;
 }
 
-int hyper_watch_exec_pty(struct hyper_exec *exec, struct hyper_pod *pod)
+static int hyper_watch_exec_pty(struct hyper_exec *exec, struct hyper_pod *pod)
 {
 	fprintf(stdout, "hyper_init_event container pts event %p, ops %p, fd %d\n",
 		&exec->stdinev, &in_ops, exec->stdinev.fd);
@@ -607,7 +610,7 @@ out:
 }
 
 // do the exec, no return
-void hyper_exec_process(struct hyper_exec *exec)
+static void hyper_exec_process(struct hyper_exec *exec)
 {
 	if (sigprocmask(SIG_SETMASK, &orig_mask, NULL) < 0) {
 		perror("sigprocmask restore mask failed");
@@ -773,8 +776,8 @@ out:
 	return ret;
 }
 
-int hyper_release_exec(struct hyper_exec *exec,
-		       struct hyper_pod *pod)
+static int hyper_release_exec(struct hyper_exec *exec,
+			      struct hyper_pod *pod)
 {
 	if (--exec->ref != 0) {
 		fprintf(stdout, "still have %d user of exec\n", exec->ref);
diff --git a/src/exec.h b/src/exec.h
index 54e35cf..cd500ce 100644
--- a/src/exec.h
+++ b/src/exec.h
@@ -45,18 +45,10 @@ struct hyper_exec {
 struct hyper_pod;
 
 int hyper_exec_cmd(char *json, int length);
-int hyper_release_exec(struct hyper_exec *, struct hyper_pod *);
-int hyper_container_execcmd(struct hyper_pod *pod);
-int hyper_setup_exec_tty(struct hyper_exec *e);
-int hyper_dup_exec_tty(struct hyper_exec *e);
 int hyper_run_process(struct hyper_exec *e);
-void hyper_exec_process(struct hyper_exec *e);
 struct hyper_exec *hyper_find_exec_by_pid(struct list_head *head, int pid);
 struct hyper_exec *hyper_find_exec_by_seq(struct hyper_pod *pod, uint64_t seq);
-int hyper_setup_exec_user(struct hyper_exec *e);
 int hyper_handle_exec_exit(struct hyper_pod *pod, int pid, uint8_t code);
-int hyper_watch_exec_pty(struct hyper_exec *exec, struct hyper_pod *pod);
 void hyper_cleanup_exec(struct hyper_pod *pod);
 
-extern struct hyper_event_ops pts_ops;
 #endif
diff --git a/src/hyper.h b/src/hyper.h
index f083db2..64bbbca 100644
--- a/src/hyper.h
+++ b/src/hyper.h
@@ -119,7 +119,6 @@ static inline int hyper_create(char *hyper_path)
 }
 
 int hyper_open_serial(char *tty);
-int hyper_start_containers(struct hyper_pod *pod);
 void hyper_cleanup_pod(struct hyper_pod *pod);
 
 extern struct hyper_pod global_pod;
diff --git a/src/init.c b/src/init.c
index 954f3c9..60d5c93 100644
--- a/src/init.c
+++ b/src/init.c
@@ -275,7 +275,7 @@ fail:
 	goto out;
 }
 
-int hyper_start_containers(struct hyper_pod *pod)
+static int hyper_start_containers(struct hyper_pod *pod)
 {
 	struct hyper_container *c;