feat(newlib): add dummy implementations for statvfs/fstatvfs

Author: Lapshin

components/newlib/src/syscalls.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -12,6 +12,10 @@
 #include <sys/time.h>
 #include <sys/stat.h>
 
+#if CONFIG_IDF_TOOLCHAIN_GCC
+#include <sys/statvfs.h>
+#endif
+
 #if CONFIG_LIBC_PICOLIBC
 int open(const char *pathname, int flags, ...)
 {
@@ -127,6 +131,22 @@ int system(const char* str)
     return _system_r(__getreent(), str);
 }
 
+#if CONFIG_IDF_TOOLCHAIN_GCC
+int statvfs(const char *restrict path, struct statvfs *restrict buf)
+{
+    /* TODO IDF-9879 */
+    errno = ENOSYS;
+    return -1;
+}
+
+int fstatvfs(int fd, struct statvfs *buf)
+{
+    /* TODO IDF-9879 */
+    errno = ENOSYS;
+    return -1;
+}
+#endif
+
 void esp_libc_include_syscalls_impl(void)
 {
 }