arch/all-darwin/hostdisk/geometry.c

   1 /* This routine differs in different UNIX variants (using different IOCTLs) */
   2
   3 #include <aros/debug.h>
   4 #include <devices/trackdisk.h>
   5 #include <exec/memory.h>
   6 #include <proto/hostlib.h>
   7
   8 #include <sys/disk.h>
   9
  10 #include "hostdisk_host.h"
  11 #include "hostdisk_device.h"
  12
  13 ULONG Host_DeviceGeometry(int file, struct DriveGeometry *dg, struct HostDiskBase *hdskBase)
  14 {
  15     int ret, err;
  16
  17     HostLib_Lock();
  18
  19     ret = hdskBase->iface->ioctl(file, DKIOCGETBLOCKSIZE, &dg->dg_SectorSize);
  20
  21     if (ret != -1)
  22         ret = hdskBase->iface->ioctl(file, DKIOCGETBLOCKCOUNT, &dg->dg_TotalSectors);
  23
  24     err = *hdskBase->errnoPtr;
  25
  26     HostLib_Unlock();
  27
  28     if (ret == -1)
  29     {
  30         D(bug("hostdisk: Error %d\n", err));
  31
  32         return err;
  33     }
  34
  35     D(bug("hostdisk: %u sectors per %u bytes\n", dg->dg_TotalSectors, dg->dg_SectorSize));
  36
  37     /*
  38      * This is all we can do on Darwin. They dropped CHS completely,
  39      * so we stay with LBA (CylSectors == 1)
  40      */
  41     dg->dg_Cylinders = dg->dg_TotalSectors;
  42
  43     return 0;
  44 }