EMILE/libemile/emile_scsi_get_rdev.c
2005-02-02 14:25:55 +00:00

49 lines
863 B
C

static __attribute__((used)) char* rcsid = "$CVSHeader$";
/*
*
* (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
*
*/
#include "partition.h"
#include "libemile.h"
#define MAJOR_HD 3
#define MAJOR_SD 8
static char *scsi_base = "/dev/sd";
static char *ide_base = "/dev/hd";
int emile_scsi_get_rdev(char* dev_name, char** 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) & 0x0F;
switch(major)
{
case MAJOR_SD:
*driver = scsi_base;
*disk = (st.st_rdev & 0xFF) >> 4;
*partition = st.st_rdev & 0x0F;
break;
case MAJOR_HD:
*driver = ide_base;
*disk = (st.st_rdev & 0xFF) >> 6;
*partition = st.st_rdev & 0x3F;
break;
default:
return -1;
}
return 0;
}