EMILE/libemile/emile_scsi_get_rdev.c
2007-10-04 20:52:37 +00:00

43 lines
719 B
C

/*
*
* (c) 2004 Laurent Vivier <Laurent@lvivier.info>
*
*/
#include "../libmap/libmap.h"
#include "libemile.h"
int emile_scsi_get_rdev(char* dev_name, int* driver, int *disk, int *partition)
{
int ret;
struct stat st;
int major;
ret = stat(dev_name, &st);
if (ret == -1)
return -1;
if (!S_ISBLK(st.st_mode))
/* not a block device */
return -1;
major = (st.st_rdev >> 8) & 0xFF;
*driver = major;
switch(major)
{
case MAJOR_SD:
*disk = (st.st_rdev & 0xFF) >> 4;
if (partition) *partition = st.st_rdev & 0x0F;
break;
case MAJOR_IDE0:
case MAJOR_IDE1:
*disk = (st.st_rdev & 0xFF) >> 6;
if (partition) *partition = st.st_rdev & 0x3F;
break;
default:
return -1;
}
return 0;
}