Solaris Drive Blocksize Inspect

blocksize.c

/* 
 * Credit goes to: 
 * http://solaris.kuehnke.de/archives/18-Checking-physical-sector-size-of-disks-on-Solaris.html 
 * Compile: gcc blocksize.c -o blocksize
 *  Use: ie. ./blocksize /dev/rdsk/c0t5000C5004A918814d0
 */
#include <sys/types.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/dkio.h>
#include <sys/vtoc.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>

void
mediainfo(char *path)
{
    struct dk_minfo dkmp;
    struct dk_minfo_ext dkmp_ext;
    int fd;

    fd = open(path, O_RDONLY);
    if (fd < 0) {
        fprintf(stderr, "getsize: open %s: %s\n", path, strerror(errno));
        exit(1);
    }
    if (ioctl(fd, DKIOCGMEDIAINFO, &dkmp) < 0) {
        fprintf(stderr, "getsize: ioctl DKIOCGMEDIAINFO %s: %s\n", path,
                strerror(errno));
        exit(1);
    }
    printf ("dkmp.dki_capacity = %llu\n", dkmp.dki_capacity);
    printf ("dkmp.dki_lbsize   = %u\n", dkmp.dki_lbsize);

    if (ioctl(fd, DKIOCGMEDIAINFOEXT, &dkmp_ext) < 0) {
        fprintf(stderr, "getsize: ioctl DKIOCGMEDIAINFOEXT %s: %s\n", path,
                strerror(errno));
        exit(1);
    }
    printf ("dkmp_ext.dki_capacity = %llu\n", dkmp_ext.dki_capacity);
    printf ("dkmp_ext.dki_lbsize   = %u\n", dkmp_ext.dki_lbsize);
    printf ("dkmp_ext.dki_pbsize   = %u\n", dkmp_ext.dki_pbsize);

    (void)close(fd);
}

int
main(int argc, char *argv[])
{
 if (argc != 2)
 { 
  fprintf(stderr, "getsize: usage: getsize <Raw Device>\n");
  exit(1);
 }

 mediainfo(argv[1]);
 return 0;
}