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/*----------------------------------------------------------------------*/
/* determine_drive_type -- Public Domain code from Bob Dolan */
/* */
/* INPUT: the drive number ( 0=current, 1=A:, 2=B:, etc. ) */
/* OUTPUT: drive type ( 0=physical drive, 1=Network drive, 2=RamDisk ) */
/*----------------------------------------------------------------------*/
#include <dos.h>
drive_type(int dr)
{
union REGS regs;
regs.x.ax = 0x4409; /* IOCTL func 9 */
regs.h.bl = (unsigned char)dr;
int86(0x21, ®s, ®s);
if (!regs.x.cflag)
{
if (regs.x.dx & 0x1000)
return 1; /* Network drive */
else if (regs.x.dx == 0x0800)
return 2; /* RAMdisk */
}
return 0; /* physical drive */
}
#ifdef TEST
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
int main(int argc, char *argv[])
{
int dr = 0;
if (1 < argc)
dr = toupper(*argv[1]) - '@';
printf ("drive_type(%d) = %d\n", dr, drive_type(dr));
return 0;
}
#endif /* TEST */
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