diff --git a/source/tools/combine/iosdiag/hangdetect/main.c b/source/tools/combine/iosdiag/hangdetect/main.c
index 08fd5e4eb3367e37e24bfa7a264400a199aa8d22..c157960c9be590c6b4fe609115c31c51f3339319 100644
--- a/source/tools/combine/iosdiag/hangdetect/main.c
+++ b/source/tools/combine/iosdiag/hangdetect/main.c
@@ -1,5 +1,6 @@
 #include <sys/mman.h>
 #include <sys/stat.h>
+#include <sys/types.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -144,11 +145,34 @@ static void put_rq_hang_info_buffer(struct rq_hang_info *buf)
 		close(g_fd_rq_hang_detect);
 }
 
+int create_directory(const char* path, mode_t mode) 
+{
+    struct stat st;
+    if (stat(path, &st) == 0) {
+        if (S_ISDIR(st.st_mode) == 1) {
+            return 0;
+        } 
+        else {
+            return -1;
+        }
+    } else {
+        char* path_copy = strdup(path);
+
+        char* parent_path = dirname(path_copy);
+        
+        create_directory(parent_path, mode);
+        free(path_copy);
+
+        if (mkdir(path, mode) == -1) {
+            return -1;
+        }
+        return 0;
+    }
+}
 static int open_result_file(char *filename)
 {
 	int fd;
 	char buf[256];
-	char cmd[272];
 
 	if (strlen(filename) > (sizeof(buf) - 1)) {
 		printf("error: output file name(%s) too large(max %d bytes)\n",
@@ -156,11 +180,15 @@ static int open_result_file(char *filename)
 		return -1;
 	}
 	strcpy(buf, filename);
-	sprintf(cmd, "mkdir %s -p", dirname(buf));
-	exec_shell_cmd(cmd);
+	char *dir = dirname(buf);
+	if (create_directory(dir, 0755) != 0 && errno != EEXIST) {
+        printf("error: create directory \"%s\" fail\n", dir);
+        return -1;
+    }
+
 	fd = open(filename, O_RDWR | O_CREAT, 0755);
 	if (fd < 0) {
-		printf("error: create output file \"%s\" fail\n", filename);
+		printf("error: open output file \"%s\" fail\n", filename);
 		return -1;
 	}
 	return fd;
diff --git a/source/tools/combine/iosdiag/latency/collect.c b/source/tools/combine/iosdiag/latency/collect.c
index 2d752eb24aff8c01b40778790d27d79115ce9344..6890f8c1bb76c4ccf3dfa22ea2ff753ecfc460db 100644
--- a/source/tools/combine/iosdiag/latency/collect.c
+++ b/source/tools/combine/iosdiag/latency/collect.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <assert.h>
+#include <errno.h>
 #include <linux/bpf.h>
 #include <string.h>
 #include <sys/resource.h>
@@ -55,6 +56,31 @@ static int exec_shell_cmd(char *cmd)
 	return 0;
 }
 
+int create_directory(const char* path, mode_t mode) 
+{
+    struct stat st;
+    if (stat(path, &st) == 0) {
+        if (S_ISDIR(st.st_mode) == 1) {
+            return 0;
+        } 
+        else {
+            return -1;
+        }
+    } else {
+        char* path_copy = strdup(path);
+
+        char* parent_path = dirname(path_copy);
+        
+        create_directory(parent_path, mode);
+        free(path_copy);
+
+        if (mkdir(path, mode) == -1) {
+            return -1;
+        }
+        return 0;
+    }
+}
+
 static int over_threshold(struct iosdiag_req *iop)
 {
 	unsigned long threshold_ns = get_threshold_us() * 1000;
@@ -249,7 +275,6 @@ int iosdiag_init(char *devname)
 int iosdiag_run(int timeout, char *output_file)
 {
 	char filepath[256];
-	char cmd[272];
 
 	if (strlen(output_file) > (sizeof(filepath) - 1)) {
 		printf("error: output file name(%s) too large(max %lu bytes)\n",
@@ -257,11 +282,15 @@ int iosdiag_run(int timeout, char *output_file)
 		return -1;
 	}
 	strcpy(filepath, output_file);
-	sprintf(cmd, "mkdir %s -p", dirname(filepath));
-	exec_shell_cmd(cmd);
+	char *dir = dirname(filepath);
+	if (create_directory(dir, 0755) != 0 && errno != EEXIST) {
+        printf("error: create directory \"%s\" fail\n", dir);
+        return -1;
+    }
+
 	g_log_fd = open(output_file, O_RDWR | O_CREAT, 0755);
 	if (g_log_fd < 0) {
-		printf("error: create output file \"%s\" fail\n", output_file);
+		printf("error: open output file \"%s\" fail\n", output_file);
 		return -1;
 	}
 	signal(SIGINT, iosdiag_stop);