feat(newlib): add dummy implementations of pathconf, chmod, dirfd

Closes https://github.com/espressif/esp-idf/issues/14174

components/newlib/src/sysconf.c

@@ -1,13 +1,18 @@
 /*
- * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
 
 #include <unistd.h>
 #include <errno.h>
+#include <limits.h>
+#include "esp_err.h"
+#include "esp_log.h"
 #include "sdkconfig.h"
 
+static const char *TAG = "sysconf";
+
 #ifdef CONFIG_FREERTOS_UNICORE
 #define CPU_NUM 1
 #else
@@ -25,3 +30,24 @@ long sysconf(int arg)
         return -1;
     }
 }
+
+// pathconf
+long fpathconf(int fildes, int name)
+{
+    if (name == _PC_PATH_MAX) {
+        return PATH_MAX;
+    }
+    ESP_LOGW(TAG, "fpathconf: unsupported name %d", name);
+    errno = EINVAL;
+    return -1;
+}
+
+long pathconf(const char *path, int name)
+{
+    if (name == _PC_PATH_MAX) {
+        return PATH_MAX;
+    }
+    ESP_LOGW(TAG, "pathconf: unsupported name %d", name);
+    errno = EINVAL;
+    return -1;
+}