support musl libc on nuttx and add test case

APP_Framework/Applications/app_test/Makefile

@@ -14,6 +14,10 @@ ifeq ($(CONFIG_ADD_NUTTX_FETURES),y)
         CSRCS += test_touch.c
     endif
 
+    ifeq ($(CONFIG_MUSL_LIBC),y)
+        CSRCS += test_musl.c
+    endif
+
     include $(APPDIR)/Application.mk
 
 endif

APP_Framework/Applications/app_test/test_musl.c

@@ -0,0 +1,103 @@
+/*
+* Copyright (c) 2020 AIIT XUOS Lab
+* XiUOS is licensed under Mulan PSL v2.
+* You can use this software according to the terms and conditions of the Mulan PSL v2.
+* You may obtain a copy of Mulan PSL v2 at:
+*        http://license.coscl.org.cn/MulanPSL2
+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+* See the Mulan PSL v2 for more details.
+*/
+
+/**
+* @file:    test_musl.c
+* @brief:   a application of musl test function
+* @version: 2.0
+* @author:  AIIT XUOS Lab
+* @date:    2022/11/8
+*/
+
+#include <transform.h>
+
+#ifdef ADD_NUTTX_FETURES
+
+#if defined(CONFIG_MUSL_LIBC) && defined(CONFIG_FS_AUTOMOUNTER)
+
+static void file_read_and_write(void)
+{
+    FILE *p;
+    char s[] = "good luck to you!";
+    char buffer[20];
+
+    if((p = fopen("/mnt/sdcard/test.txt","w+")) == NULL)
+    {
+      printf("Can not open file!\n");
+    }
+    fwrite(s, sizeof(s) + 1, 1, p);
+    fseek(p, SEEK_SET, 0);
+    fread(buffer, sizeof(buffer) + 1, 1, p);
+    printf("read string is: %s\n", buffer);
+    fclose(p);
+}
+
+static void file_operations(void)
+{
+   int ret;
+   FILE *fp;
+   char filename1[] = "/mnt/sdcard/file1.txt";
+   char filename2[] = "/mnt/sdcard/file2.txt";
+
+   fp = fopen(filename1, "w");
+
+   fprintf(fp, "%s", "this is runoob.com");
+   fclose(fp);
+   
+   ret = remove(filename1);
+
+   if(ret == 0) 
+   {
+      printf("remove file1 success!\n");
+   }
+   else 
+   {
+      printf("error,can not remove file1!\n");
+   }
+
+   ret = remove(filename2);
+   if(ret == 0) 
+   {
+      printf("remove file2 success!\n");
+   }
+   else 
+   {
+      printf("error,can not remove file2!\n");
+   }
+}
+
+static void malloc_and_free(void)
+{
+  int *p;
+  int len;
+  for(int i = 0; i < 100; i++)
+  {
+    len = 1024*(i+1);
+    p = malloc(len);
+    if(p)
+    {
+      printf("malloc %d bytes success!\n",len);
+      free(p);
+    }
+  }
+}
+void Testmusl(void)
+{
+  printf("--------start test file read and write!--------\n");
+  file_read_and_write();
+  printf("----------start test file operationsn!---------\n");
+  file_operations();
+  printf("---------start test malloc and free!-----------\n");
+  malloc_and_free();
+}
+#endif
+#endif