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/*
hpt: Highpoint Fake Raid reader
Copyright (C) 2003
Based off of pdc.c
*/
#include <unistd.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <fcntl.h>
#include <linux/hdreg.h>
#ifdef DIET
#include <sys/mount.h>
#else
#include <linux/fs.h>
#endif
#include <string.h>
#ifdef DIET
typedef char char16_t;
typedef unsigned char u_int8_t;
typedef unsigned short u_int16_t;
typedef uint32_t u_int32_t;
#else
typedef unsigned int uint32_t;
#endif
#ifndef BLKSSZGET
#define BLKSSZGET _IO(0x12,104)/* get block device sector size */
#endif
struct hpt_raid_conf
{
int8_t filler1[32];
u_int32_t magic;
#define HPT_MAGIC_OK 0x5a7816f0
#define HPT_MAGIC_BAD 0x5a7816fd
u_int32_t magic_0;
u_int32_t magic_1;
u_int32_t order;
#define HPT_O_MIRROR 0x01
#define HPT_O_STRIPE 0x02
#define HPT_O_OK 0x04
u_int8_t raid_disks;
u_int8_t raid0_shift;
u_int8_t type;
#define HPT_T_RAID_0 0x00
#define HPT_T_RAID_1 0x01
#define HPT_T_RAID_01_RAID_0 0x02
#define HPT_T_SPAN 0x03
#define HPT_T_RAID_3 0x04
#define HPT_T_RAID_5 0x05
#define HPT_T_SINGLEDISK 0x06
#define HPT_T_RAID_01_RAID_1 0x07
u_int8_t disk_number;
u_int32_t total_secs;
u_int32_t disk_mode;
u_int32_t boot_mode;
u_int8_t boot_disk;
u_int8_t boot_protect;
u_int8_t error_log_entries;
u_int8_t error_log_index;
struct
{
u_int32_t timestamp;
u_int8_t reason;
#define HPT_R_REMOVED 0xfe
#define HPT_R_BROKEN 0xff
u_int8_t disk;
u_int8_t status;
u_int8_t sectors;
u_int32_t lba;
} errorlog[32];
u_int8_t filler[60];
};
static int read_disk_sb (int fd, unsigned char * buffer, int bufsize)
{
if ((lseek64(fd, 4096, SEEK_SET)) == -1) return -1;
if ((read(fd, buffer, bufsize)) < bufsize) return -1;
return 0;
}
int hpt_dev_running_raid(int fd)
{
int i;
struct hpt_raid_conf *prom;
unsigned char block[4096];
if (read_disk_sb(fd,(unsigned char*)&block,sizeof(block)))
return -1;
prom = (struct hpt_raid_conf*)&block[512];
if (prom->magic != 0x5a7816f0) {
// fprintf(stderr, "hptraid: bad magic!\n");
return 0;
}
if (prom->type) {
// fprintf(stderr, "hptraid: only RAID0 is supported currently\n");
return 0;
}
i = prom->disk_number;
if (i<0)
return 0;
if (i>8)
return 0;
// fprintf(stderr, "type is %d, i is %d\n", prom->type, i);
return 1;
}
#if 0
int main(int argc, char ** argv) {
int fd, rc;
fd = open("/dev/ataraid/d0", O_RDONLY);
rc = hpt_dev_running_raid(fd);
if (rc != 1) {
// fprintf(stderr, "no hpt magic\n");
close(fd);
return 1;
} else {
// fprintf(stderr, "we have hpt magic\n");
close(fd);
}
return 0;
}
#endif
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