feat(vfs): Add linux target support for esp_vfs_eventfd

components/console/CMakeLists.txt

@@ -5,12 +5,13 @@ set(srcs "commands.c"
          "split_argv.c"
          "linenoise/linenoise.c")
 
+set(requires vfs)
+
 if(${target} STREQUAL "linux")
     list(APPEND srcs "esp_console_repl_linux.c")
-    set(requires "")
 else()
     list(APPEND srcs "esp_console_repl_chip.c")
-    set(requires vfs esp_vfs_console)
+    list(APPEND requires esp_vfs_console)
 endif()
 
 set(argtable_srcs argtable3/arg_cmd.c

components/console/esp_console_common.c

@@ -10,7 +10,11 @@
 #include "console_private.h"
 #include "esp_log.h"
 #include "linenoise/linenoise.h"
+
 #include "esp_vfs_eventfd.h"
+#if CONFIG_IDF_TARGET_LINUX
+#include <unistd.h>
+#endif
 
 static const char *TAG = "console.common";
 

components/vfs/CMakeLists.txt

@@ -1,7 +1,10 @@
 idf_build_get_property(target IDF_TARGET)
 
+# On Linux, we only support a few features, hence this simple component registration
 if(${target} STREQUAL "linux")
-    return() # This component is not supported by the POSIX/Linux simulator
+    idf_component_register(SRCS "vfs_eventfd_linux.c"
+                           INCLUDE_DIRS "include")
+    return()
 endif()
 
 list(APPEND sources "vfs.c"

components/vfs/vfs_eventfd_linux.c

@@ -0,0 +1,19 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "esp_vfs_eventfd.h"
+#include <sys/eventfd.h>
+
+esp_err_t esp_vfs_eventfd_register(const esp_vfs_eventfd_config_t *config)
+{
+    (void)config;
+    return ESP_OK;
+}
+
+esp_err_t esp_vfs_eventfd_unregister(void)
+{
+    return ESP_OK;
+}