fix: 当前仓代码编译告警的问题

【背景】
当前仓代码存在编译告警需要处理

【修改方案】
在测试用例中屏蔽了-Werror选项
在对应的代码处添加了相应函数的声明头文件

【影响】
对现有的产品编译不会有影响。

re #I4N50W

Signed-off-by: yinjiaming <yinjiaming@huawei.com>
Change-Id: I7dc1e38105aa3d60f9f991f34f88875cccb48463

components/fs/littlefs/BUILD.gn

@@ -38,6 +38,7 @@ kernel_module(module_name) {
     "$LITEOSTHIRDPARTY/littlefs/lfs_util.c",
     "lfs_api.c",
   ]
+  configs += [ "$LITEOSTOPDIR:warn_config" ]
 }
 
 config("public") {

components/fs/littlefs/lfs_api.c

@@ -41,7 +41,7 @@ struct FileOpInfo g_fsOp[LOSCFG_LFS_MAX_MOUNT_SIZE] = {0};
 static LittleFsHandleStruct g_handle[LITTLE_FS_MAX_OPEN_FILES] = {0};
 struct dirent g_nameValue;
 static pthread_mutex_t g_FslocalMutex = PTHREAD_MUTEX_INITIALIZER;
-static const char *g_littlefsMntName[LOSCFG_LFS_MAX_MOUNT_SIZE] = {"/a", "/b", "/c"};
+static const char *g_littlefsMntName[LOSCFG_LFS_MAX_MOUNT_SIZE] = {"/a"};
 
 LittleFsHandleStruct *LfsAllocFd(const char *fileName, int *fd)
 {
@@ -573,7 +573,7 @@ int LfsClosedir(DIR *dir)
     return ret;
 }
 
-int LfsOpen(const char *pathName, int openFlag, int mode)
+int LfsOpen(const char *pathName, int openFlag, ...)
 {
     int fd = INVALID_FD;
     int err = INVALID_FD;

components/fs/littlefs/lfs_api.h

@@ -100,7 +100,7 @@ int LfsRmdir(const char *dirName);
 DIR *LfsOpendir(const char *dirName);
 struct dirent *LfsReaddir(DIR *dir);
 int LfsClosedir(DIR *dir);
-int LfsOpen(const char *pathName, int openFlag, int mode);
+int LfsOpen(const char *pathName, int openFlag, ...);
 int LfsRead(int fd, void *buf, unsigned int len);
 int LfsWrite(int fd, const void *buf, unsigned int len);
 off_t LfsSeek(int fd, off_t offset, int whence);