IOCINFO

An example of the IOCINFO command is

#include <sys/devinfo.h>
#include <sys/Atape.h>
struct devinfo info;

if (!ioctl (fd, IOCINFO, &info))
    {
        printf ("The IOCINFO ioctl succeeded\n");
    }
    else
    {
        perror ("The IOCINFO ioctl failed");
    }

An example of the output data structure for a tape drive rmt* special file is

info.devtype=DD_SCTAPE
info.devsubtype=ATAPE_3590
info.un.scmt.type=DT_STREAM
info.un.scmt.blksize=tape block size (0=variable)

An example of the output data structure for an integrated medium changer rmt*.smc special file is

info.devtype=DD_MEDIUM_CHANGER;
info.devsubtype=ATAPE_3590;

An example of the output data structure for an independent medium changer smc* special file is

info.devtype=DD_MEDIUM_CHANGER;
info.devsubtype=ATAPE_7337;