esp-idf/components/spiffs/test_spiffs_host/stubs/newlib/lock.c

#include "sys/lock.h"

void _lock_acquire(_lock_t *lock) 
{
    return;
}

void _lock_close(_lock_t *lock) 
{
    return;
}

void _lock_init(_lock_t *lock) 
{
    return;
}

void _lock_release(_lock_t *lock) 
{
    return;
}