change(esp_libc): rename newlib component to esp_libc

components/esp_libc/src/sysconf.c

@@ -0,0 +1,53 @@
+/*
+ * 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
+#define CPU_NUM CONFIG_SOC_CPU_CORES_NUM
+#endif
+
+long sysconf(int arg)
+{
+    switch (arg) {
+    case _SC_NPROCESSORS_CONF:
+    case _SC_NPROCESSORS_ONLN:
+        return CPU_NUM;
+    default:
+        errno = EINVAL;
+        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;
+}