diff --git a/kal/posix/musl_src/stdio/__fdopen.c b/kal/posix/musl_src/stdio/__fdopen.c
index e89f930d..bc50be7d 100644
--- a/kal/posix/musl_src/stdio/__fdopen.c
+++ b/kal/posix/musl_src/stdio/__fdopen.c
@@ -6,6 +6,11 @@
 #include <string.h>
 #include <pthread.h>
 
+int ioctl(int fd, int req, ...)
+{
+	return 0;
+}
+
 FILE *__fdopen(int fd, const char *mode)
 {
 	FILE *f;
diff --git a/kal/posix/musl_src/stdio/fclose.c b/kal/posix/musl_src/stdio/fclose.c
index bd6a890d..eeba0ffb 100644
--- a/kal/posix/musl_src/stdio/fclose.c
+++ b/kal/posix/musl_src/stdio/fclose.c
@@ -4,10 +4,10 @@
 static void dummy(FILE *f) { }
 weak_alias(dummy, __unlist_locked_file);
 
-int fclose(FILE *f)
+int __fclose(FILE *f)
 {
 	int r;
-	
+
 	FLOCK(f);
 	r = fflush(f);
 	r |= f->close(f);
@@ -34,3 +34,4 @@ int fclose(FILE *f)
 
 	return r;
 }
+weak_alias(__fclose, fclose);
\ No newline at end of file
diff --git a/kal/posix/musl_src/stdio/fflush.c b/kal/posix/musl_src/stdio/fflush.c
index 71606ac9..d755f8f1 100644
--- a/kal/posix/musl_src/stdio/fflush.c
+++ b/kal/posix/musl_src/stdio/fflush.c
@@ -5,16 +5,16 @@ static FILE *volatile dummy = 0;
 weak_alias(dummy, __stdout_used);
 weak_alias(dummy, __stderr_used);
 
-int fflush(FILE *f)
+int __fflush(FILE *f)
 {
 	if (!f) {
 		int r = 0;
-		if (__stdout_used) r |= fflush(__stdout_used);
-		if (__stderr_used) r |= fflush(__stderr_used);
+		if (__stdout_used) r |= __fflush(__stdout_used);
+		if (__stderr_used) r |= __fflush(__stderr_used);
 
 		for (f=*__ofl_lock(); f; f=f->next) {
 			FLOCK(f);
-			if (f->wpos != f->wbase) r |= fflush(f);
+			if (f->wpos != f->wbase) r |= __fflush(f);
 			FUNLOCK(f);
 		}
 		__ofl_unlock();
@@ -45,3 +45,4 @@ int fflush(FILE *f)
 }
 
 weak_alias(fflush, fflush_unlocked);
+weak_alias(__fflush, fflush);
diff --git a/kal/posix/musl_src/stdio/fseek.c b/kal/posix/musl_src/stdio/fseek.c
index 2fc16d84..4731d8a0 100644
--- a/kal/posix/musl_src/stdio/fseek.c
+++ b/kal/posix/musl_src/stdio/fseek.c
@@ -15,12 +15,12 @@ int __fseeko_unlocked(FILE *f, off_t off, int whence)
 	f->wpos = f->wbase = f->wend = 0;
 
 	/* Perform the underlying seek. */
-	if (lseek(f->fd, (unsigned int)off, whence) < 0) return -1;
+	if (lseek(f->fd, off, whence) < 0) return -1;
 
 	/* If seek succeeded, file is seekable and we discard read buffer. */
 	f->rpos = f->rend = 0;
 	f->flags &= ~F_EOF;
-	
+
 	return 0;
 }
 
diff --git a/kal/posix/src/fwrap.c b/kal/posix/src/fwrap.c
new file mode 100644
index 00000000..c47b46bf
--- /dev/null
+++ b/kal/posix/src/fwrap.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "stdio_impl.h"
+
+int __wrap_fclose(FILE *f)
+{
+    return __fclose(f);
+}
+
+int __wrap_fflush(FILE *f)
+{
+    return __fflush(f);
+}
\ No newline at end of file