diff --git a/porting/liteos_m/kernel/src/stdio/__fdopen.c b/porting/liteos_m/kernel/src/stdio/__fdopen.c
index bc50be7d67184e69843213308417c19249231379..868121e7e496e19a256cb1c0b60da40e1b9e3986 100644
--- a/porting/liteos_m/kernel/src/stdio/__fdopen.c
+++ b/porting/liteos_m/kernel/src/stdio/__fdopen.c
@@ -6,11 +6,6 @@
 #include <string.h>
 #include <pthread.h>
 
-int ioctl(int fd, int req, ...)
-{
-	return 0;
-}
-
 FILE *__fdopen(int fd, const char *mode)
 {
 	FILE *f;
@@ -32,9 +27,6 @@ FILE *__fdopen(int fd, const char *mode)
 	/* Impose mode restrictions */
 	if (!strchr(mode, '+')) f->flags = (*mode == 'r') ? F_NOWR : F_NORD;
 
-	/* Apply close-on-exec flag */
-	if (strchr(mode, 'e')) fcntl(fd, F_SETFD, FD_CLOEXEC);
-
 	/* Set append mode on fd if opened for append */
 	if (*mode == 'a') {
 		int flags = fcntl(fd, F_GETFL);
@@ -51,7 +43,7 @@ FILE *__fdopen(int fd, const char *mode)
 
 	/* Activate line buffered mode for terminals */
 	f->lbf = EOF;
-	if (!(f->flags & F_NOWR) && !ioctl(fd, TIOCGWINSZ, &wsz))
+	if (!(f->flags & F_NOWR))
 		f->lbf = '\n';
 
 	/* Initialize op ptrs. No problem if some are unneeded. */
diff --git a/porting/liteos_m/kernel/src/stdio/__stdout_write.c b/porting/liteos_m/kernel/src/stdio/__stdout_write.c
index 8205b7b7bbbfd41ed4e4d57e1fa688010b88f665..b8228d4a6cdb891ff79007e6cb609c0e5dd35d88 100644
--- a/porting/liteos_m/kernel/src/stdio/__stdout_write.c
+++ b/porting/liteos_m/kernel/src/stdio/__stdout_write.c
@@ -3,8 +3,7 @@
 
 size_t __stdout_write(FILE *f, const unsigned char *buf, size_t len)
 {
-    struct winsize wsz;
-    if (!(f->flags & F_SVB) && ioctl(f->fd, TIOCGWINSZ, &wsz)) {
+    if (!(f->flags & F_SVB)) {
         f->lbf = EOF;
     }
     return __stdio_write(f, buf, len);
diff --git a/porting/liteos_m/kernel/src/stdio/fopen.c b/porting/liteos_m/kernel/src/stdio/fopen.c
index 56086846694651fc00472262b7b3a9c8d99a3a7c..7709f99e5112488a688ef185eba02e47d626a472 100644
--- a/porting/liteos_m/kernel/src/stdio/fopen.c
+++ b/porting/liteos_m/kernel/src/stdio/fopen.c
@@ -22,8 +22,6 @@ FILE *fopen(const char *restrict filename, const char *restrict mode)
 
 	fd = open(filename, flags, 0666);
 	if (fd < 0) return 0;
-	if (flags & O_CLOEXEC)
-		fcntl(fd, F_SETFD, FD_CLOEXEC);
 
 #if !defined(__LP64__)
 	if (fd > SHRT_MAX) {
diff --git a/porting/liteos_m/kernel/src/stdio/vfprintf.c b/porting/liteos_m/kernel/src/stdio/vfprintf.c
index f4371ae530b75d3406817643447ca67d6853fb9f..ef1f60f81ae0bba0234e2f436a538c4b9a7c1f6b 100644
--- a/porting/liteos_m/kernel/src/stdio/vfprintf.c
+++ b/porting/liteos_m/kernel/src/stdio/vfprintf.c
@@ -451,7 +451,7 @@ static int printf_core(FILE *f, const char *fmt, va_list *ap, union arg *nl_arg,
 #ifdef LOSCFG_FS_VFS
 	struct winsize wsz;
 
-	if (f && (f->write == __stdout_write) && !ioctl(f->fd, TIOCGWINSZ, &wsz)) {
+	if (f && (f->write == __stdout_write)) {
 		f->lbf = '\n';
 		f->write = __stdio_write;
 		f->wpos = f->wbase = f->buf;
diff --git a/porting/liteos_m_iccarm/kernel/src/fs.c b/porting/liteos_m_iccarm/kernel/src/fs.c
index ab2400679a0bcf1d518a6c2e4dbeb55b2d511791..b5074296aeaf038751b5f28d2ed99775c44ec719 100644
--- a/porting/liteos_m_iccarm/kernel/src/fs.c
+++ b/porting/liteos_m_iccarm/kernel/src/fs.c
@@ -185,6 +185,28 @@ int remove(const char *filename)
     return ret;
 }
 
+int fcntl(int fd, int cmd, ...)
+{
+    int ret;
+    va_list vaList;
+
+    va_start(vaList, cmd);
+    ret = OsFcntl(fd, cmd, vaList);
+    va_end(vaList);
+    return ret;
+}
+
+int ioctl(int fd, int req, ...)
+{
+    int ret;
+    va_list vaList;
+
+    va_start(vaList, req);
+    ret = OsIoctl(fd, req, vaList);
+    va_end(vaList);
+    return ret;
+}
+
 #else /* #ifdef LOSCFG_FS_VFS */
 
 int mount(const char *source, const char *target,
@@ -309,4 +331,13 @@ int remove(const char *filename)
     return -1;
 }
 
+int fcntl(int fd, int cmd, ...)
+{
+    return -1;
+}
+
+int ioctl(int fd, int req, ...)
+{
+    return -1;
+}
 #endif