diff --git a/file_system/gjb_S0101601GN_1.c b/file_system/gjb_S0101601GN_1.c
new file mode 100644
index 0000000000000000000000000000000000000000..8b64f15d533d29f41d0987160f27021e193b1e3d
--- /dev/null
+++ b/file_system/gjb_S0101601GN_1.c
@@ -0,0 +1,102 @@
+/*********************************************************************************************************
+**
+**                                   GJB ????????
+**
+**                               Copyright All Rights Reserved
+**
+**--------------??????--------------------------------------------------------------------------------
+**
+** ??   ??   ??: gjb_S0101601GN_1.c
+**
+** ???????????: 2021 ?? 1 ?? 12 ??
+**
+** ??        ??: ??????????????????????????????????????
+**               ????????????????????????????????????????
+**               ??????????????????????????????
+*********************************************************************************************************/
+#include <pthread.h>
+#include <stdio.h>
+#include <math.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+
+#include <string.h>
+#include <stdio.h>
+int main(int argc, char **argv)
+{
+    int     fd;
+    char    buf[32];
+    int     ret;
+
+    /*
+     *  ???????
+     */
+    fd = creat("./file", 0777);
+    if(fd < 0) {
+        printf("creat error");
+        return -1;
+
+    } else {
+        printf( "creat file success!");
+        close(fd);
+    }
+
+    fd = open("./file", O_RDWR, 0666);
+
+    ret = write(fd, "this is a test", strlen("this is a test"));
+    if (ret < 0) {
+        printf("write file error");
+        close(fd);
+        unlink("./file");
+        return -1;
+    } else {
+        printf("write file success");
+    }
+
+    /*
+     *  ??????????????????
+     */
+    fsync(fd);
+    lseek(fd, SEEK_SET, 0);
+
+    /*
+     *  ???????????????§Õ??????
+     */
+    ret = read(fd, buf, 32);
+    if (ret < 0) {
+        printf("read file error");
+        close(fd);
+        unlink("./file");
+        return -1;
+
+    } else {
+        if (strncmp(buf, "this is a test", 14)) {
+            printf("check file content error");
+            close(fd);
+            unlink("./file");
+            return -1;
+        }
+    }
+
+    close(fd);
+
+    /*
+     *  ?????????????, ?????????????-1
+     */
+    fd = creat("./file", 0777);
+    if (fd >= 0) {
+       printf( "creat same file test sucess!");
+    } else {
+        printf("creat error");
+        close(fd);
+        unlink("./file");
+        return -1;
+    }
+
+    unlink("./file");
+
+    return 0;
+}