ra8_fs_fat_lock.c

Go to the documentation of this file.

/*
 */
 
#include <stddef.h>
#include <stdint.h>
 
#include "ra8_attributes.h"
#include "ra8_fs.h"
#include "ra8_fs_fat_internal.h"

static ra8_fs_lock_t s_lock;

static bool s_lock_installed;
 
/* `priv_lock_acquire()`: see header for the documented contract. */
void priv_lock_acquire(void)
{
  if (!s_lock_installed) {
    return;
  }
  s_lock.acquire(s_lock.ctx);
}
 
/* `priv_lock_release()`: see header for the documented contract. */
void priv_lock_release(void)
{
  if (!s_lock_installed) {
    return;
  }
  s_lock.release(s_lock.ctx);
}
 
ra8_err_t ra8_fs_set_lock(const ra8_fs_lock_t* lock)
{
  if (lock == nullptr) {
    s_lock_installed = false;
    s_lock           = (ra8_fs_lock_t){};
    return k_ra8_ok;
  }
  if ((lock->acquire == nullptr) || (lock->release == nullptr)) {
    return k_ra8_err_invalid_arg;
  }
  s_lock           = *lock;
  s_lock_installed = true;
  return k_ra8_ok;
}