diff --git a/ulib/ruxlibc/c/ioctl.c b/ulib/ruxlibc/c/ioctl.c
index 578622a46..1248dfabb 100644
--- a/ulib/ruxlibc/c/ioctl.c
+++ b/ulib/ruxlibc/c/ioctl.c
@@ -3,6 +3,7 @@
  *   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
+<<<<<<< HEAD
  *   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.
@@ -24,4 +25,18 @@ int ioctl(int fd, int request, ...)
     va_end(ap);
 
     return rux_ioctl(fd, request, arg);
+=======
+ *   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.
+ */
+
+#include <stdio.h>
+#include <sys/statfs.h>
+
+// TODO
+int statfs(const char *path, struct statfs *buf)
+{
+    unimplemented();
+    return 0;
+>>>>>>> remote/dev
 }
diff --git a/ulib/ruxlibc/c/pwd.c b/ulib/ruxlibc/c/pwd.c
index 466974594..df287bc2a 100644
--- a/ulib/ruxlibc/c/pwd.c
+++ b/ulib/ruxlibc/c/pwd.c
@@ -29,6 +29,12 @@ int getpwnam_r(const char *name, struct passwd *pw, char *buf, size_t size, stru
     unimplemented();
     return 0;
 }
+// TODO
+int sem_destroy(sem_t *sem)
+{
+    unimplemented();
+    return 0;
+}
 
 int getpwuid_r(uid_t uid, struct passwd *pw, char *buf, size_t size, struct passwd **res)
 {
@@ -36,6 +42,13 @@ int getpwuid_r(uid_t uid, struct passwd *pw, char *buf, size_t size, struct pass
     return 0;
 }
 
+// TODO
+int sem_init(sem_t *sem, int pshared, unsigned int value)
+{
+    unimplemented();
+    return 0;
+}
+
 struct passwd *getpwnam(const char *name)
 {
     struct passwd *pwd;
@@ -49,3 +62,17 @@ struct passwd *getpwnam(const char *name)
 
     return pwd;
 }
+
+// TODO
+int sem_post(sem_t *sem)
+{
+    unimplemented();
+    return 0;
+}
+
+// TODO
+int sem_wait(sem_t *sem)
+{
+    unimplemented();
+    return 0;
+}
diff --git a/ulib/ruxlibc/c/resource.c b/ulib/ruxlibc/c/resource.c
index e46041a8e..4ed6955fe 100644
--- a/ulib/ruxlibc/c/resource.c
+++ b/ulib/ruxlibc/c/resource.c
@@ -24,3 +24,8 @@ int setpriority(int which, id_t who, int prio)
     unimplemented();
     return 0;
 }
+
+ssize_t sendfile(int out_fd, int in_fd, off_t *offset, size_t count){
+    unimplemented();
+    return 0;
+}