1 files changed, 1 insertions, 0 deletions
diff --git a/src/user/lib/include/stdio.h b/src/user/lib/include/stdio.h
index 74c5230..063c81f 100644
--- a/src/user/lib/include/stdio.h
+++ b/src/user/lib/include/stdio.h
@@ -33,6 +33,7 @@ size_t fread(void *restrict ptr, size_t size, size_t nitems, FILE *restrict);
 size_t fwrite(const void *restrict ptr, size_t size, size_t nitems, FILE *restrict);
 char *fgets(char *buf, int size, FILE *f);
 int fseek(FILE *f, long offset, int whence);
+long ftell(FILE *f);
 
 int feof(FILE *);
 int ferror(FILE *);