[标准化libc] fix CI warning

1 files changed, 2 insertions, 10 deletions

diff --git a/components/dfs/src/dfs_posix.c b/components/dfs/src/dfs_posix.c
index a7c306366f..be3b039818 100644
--- a/components/dfs/src/dfs_posix.c
+++ b/components/dfs/src/dfs_posix.c
@@ -110,11 +110,7 @@ RTM_EXPORT(close);
  * @return the actual read data buffer length. If the returned value is 0, it
  * may be reach the end of file, please check errno.
  */
-#if defined(RT_USING_NEWLIB) && defined(_EXFUN)
-_READ_WRITE_RETURN_TYPE _EXFUN(read, (int fd, void *buf, size_t len))
-#else
-int read(int fd, void *buf, size_t len)
-#endif
+ssize_t read(int fd, void *buf, size_t len)
 {
     int result;
     struct dfs_fd *d;
@@ -154,11 +150,7 @@ RTM_EXPORT(read);
  *
  * @return the actual written data buffer length.
  */
-#if defined(RT_USING_NEWLIB) && defined(_EXFUN)
-_READ_WRITE_RETURN_TYPE _EXFUN(write, (int fd, const void *buf, size_t len))
-#else
-int write(int fd, const void *buf, size_t len)
-#endif
+ssize_t write(int fd, const void *buf, size_t len)
 {
     int result;
     struct dfs_fd *d;