fix(storage/vfs_console): stop new console opens from overwriting existing fds

components/esp_system/test_apps/console/main/test_app_main.c

@@ -5,6 +5,7 @@
  */
 #include <stdio.h>
 #include <assert.h>
+#include <string.h>
 #include "sdkconfig.h"
 
 #include "esp_rom_uart.h"
@@ -49,10 +50,29 @@ static void console_none_print(void)
 }
 #endif
 
+#if CONFIG_VFS_SUPPORT_IO
+static void console_open_close_check(void)
+{
+    printf("Opening /dev/console\n");
+    int fd = open("/dev/console", O_RDWR);
+    assert(fd >= 0 && "Could not open file");
+
+    const char *msg = "This should be printed to stdout\n";
+
+    write(fd, msg, strlen(msg));
+
+    printf("Closing /dev/console\n");
+    close(fd);
+
+    printf("This should be printed to stdout\n");
+}
+#endif // CONFIG_VFS_SUPPORT_IO
+
 void app_main(void)
 {
     printf("Hello World\n");
 
+#if CONFIG_VFS_SUPPORT_IO
     int fd = open("/dev/null", O_RDWR);
     assert(fd >= 0 && "Could not open file"); // Standard check
 
@@ -61,8 +81,14 @@ void app_main(void)
     assert(fd > 2 && "Incorrect file descriptor returned, stdin, stdout, stderr were not correctly assigned");
 
     close(fd);
+#endif // CONFIG_VFS_SUPPORT_IO
 
 #if CONFIG_ESP_CONSOLE_NONE
     console_none_print();
 #endif // CONFIG_ESP_CONSOLE_NONE
+
+#if CONFIG_VFS_SUPPORT_IO
+    console_open_close_check();
+#endif // CONFIG_VFS_SUPPORT_IO
+
 }