wut/libraries/wutdevoptab/devoptab_fsa_statvfs.cpp

#include "devoptab_fsa.h"

int
__wut_fsa_statvfs(struct _reent *r,
                  const char *path,
                  struct statvfs *buf)
{
   FSError status;
   uint64_t freeSpace;
   __wut_fsa_device_t *deviceData;

   deviceData = (__wut_fsa_device_t *)r->deviceData;
   if (deviceData->isSDCard) {
      r->_errno = ENOSYS;
      return -1;
   }

   memset(buf, 0, sizeof(struct statvfs));

   char *fixedPath = __wut_fsa_fixpath(r, path);
   if (!fixedPath) {
      r->_errno = ENOMEM;
      return -1;
   }

   status = FSAGetFreeSpaceSize(deviceData->clientHandle, fixedPath, &freeSpace);
   if (status < 0) {
      WUT_DEBUG_REPORT("FSAGetFreeSpaceSize(0x%08X, %s, %p) failed: %s\n",
                       deviceData->clientHandle, fixedPath, &freeSpace, FSAGetStatusStr(status));
      free(fixedPath);
      r->_errno = __wut_fsa_translate_error(status);
      return -1;
   }
   free(fixedPath);

   // File system block size
   buf->f_bsize  = deviceData->deviceSectorSize;
   // Fundamental file system block size
   buf->f_frsize = deviceData->deviceSectorSize;
   // Total number of blocks on file system in units of f_frsize
   buf->f_blocks = deviceData->deviceSizeInSectors;
   // Free blocks available for all and for non-privileged processes
   buf->f_bfree = buf->f_bavail = (uint32_t)(freeSpace / buf->f_frsize);
   // Number of inodes at this point in time
   buf->f_files                 = 0xFFFFFFFF;
   // Free inodes available for all and for non-privileged processes
   buf->f_ffree                 = 0xFFFFFFFF;
   // File system id
   buf->f_fsid                  = (unsigned long)deviceData->clientHandle;
   // Bit mask of f_flag values.
   buf->f_flag                  = 0;
   // Maximum length of filenames
   buf->f_namemax               = 255;

   return 0;
}