#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/conf.h>
extern dev_t chrtoblk(dev_t dev);
extern int chrtoblk_set(int cdev, int bdev);
extern int iskmemdev(dev_t dev);
struct bdevsw bdevsw[] =
{
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
NO_BDEVICE,
};
int nblkdev = sizeof (bdevsw) / sizeof (bdevsw[0]);
extern struct tty *km_tty[];
extern d_open_t cnopen;
extern d_close_t cnclose;
extern d_read_t cnread;
extern d_write_t cnwrite;
extern d_ioctl_t cnioctl;
extern d_select_t cnselect;
extern d_open_t kmopen;
extern d_close_t kmclose;
extern d_read_t kmread;
extern d_write_t kmwrite;
extern d_ioctl_t kmioctl;
extern d_open_t sgopen;
extern d_close_t sgclose;
extern d_ioctl_t sgioctl;
#if NVOL > 0
extern d_open_t volopen;
extern d_close_t volclose;
extern d_ioctl_t volioctl;
#else
#define volopen eno_opcl
#define volclose eno_opcl
#define volioctl eno_ioctl
#endif
extern d_open_t cttyopen;
extern d_read_t cttyread;
extern d_write_t cttywrite;
extern d_ioctl_t cttyioctl;
extern d_select_t cttyselect;
extern d_read_t mmread;
extern d_write_t mmwrite;
extern d_ioctl_t mmioctl;
#define mmselect (select_fcn_t *)seltrue
#define mmmmap eno_mmap
#include <pty.h>
#if NPTY > 0
extern struct tty *pt_tty[];
extern d_open_t ptsopen;
extern d_close_t ptsclose;
extern d_read_t ptsread;
extern d_write_t ptswrite;
extern d_stop_t ptsstop;
extern d_open_t ptcopen;
extern d_close_t ptcclose;
extern d_read_t ptcread;
extern d_write_t ptcwrite;
extern d_select_t ptcselect;
extern d_ioctl_t ptyioctl;
#else
#define ptsopen eno_opcl
#define ptsclose eno_opcl
#define ptsread eno_rdwrt
#define ptswrite eno_rdwrt
#define ptsstop nulldev
#define ptcopen eno_opcl
#define ptcclose eno_opcl
#define ptcread eno_rdwrt
#define ptcwrite eno_rdwrt
#define ptcselect eno_select
#define ptyioctl eno_ioctl
#endif
extern d_open_t logopen;
extern d_close_t logclose;
extern d_read_t logread;
extern d_ioctl_t logioctl;
extern d_select_t logselect;
extern d_open_t fdesc_open;
extern d_read_t fdesc_read;
extern d_write_t fdesc_write;
extern d_ioctl_t fdesc_ioctl;
extern d_select_t fdesc_select;
#define nullopen (d_open_t *)&nulldev
#define nullclose (d_close_t *)&nulldev
#define nullread (d_read_t *)&nulldev
#define nullwrite (d_write_t *)&nulldev
#define nullioctl (d_ioctl_t *)&nulldev
#define nullselect (d_select_t *)&nulldev
#define nullstop (d_stop_t *)&nulldev
#define nullreset (d_reset_t *)&nulldev
struct cdevsw cdevsw[] =
{
{
cnopen, cnclose, cnread, cnwrite,
cnioctl, nullstop, nullreset, 0, cnselect,
eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY
},
NO_CDEVICE,
{
cttyopen, nullclose, cttyread, cttywrite,
cttyioctl, nullstop, nullreset, 0, cttyselect,
eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY
},
{
nullopen, nullclose, mmread, mmwrite,
mmioctl, nullstop, nullreset, 0, mmselect,
mmmmap, eno_strat, eno_getc, eno_putc, D_DISK
},
{
ptsopen, ptsclose, ptsread, ptswrite,
ptyioctl, ptsstop, nullreset, pt_tty, ttselect,
eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY
},
{
ptcopen, ptcclose, ptcread, ptcwrite,
ptyioctl, nullstop, nullreset, 0, ptcselect,
eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY
},
{
logopen, logclose, logread, eno_rdwrt,
logioctl, eno_stop, nullreset, 0, logselect,
eno_mmap, eno_strat, eno_getc, eno_putc, 0
},
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
{
kmopen, kmclose, kmread, kmwrite,
kmioctl, nullstop, nullreset, km_tty, ttselect,
eno_mmap, eno_strat, eno_getc, eno_putc, 0
},
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
{
fdesc_open, eno_opcl, fdesc_read, fdesc_write,
fdesc_ioctl, eno_stop, eno_reset, 0, fdesc_select,
eno_mmap, eno_strat, eno_getc, eno_putc, 0
},
#if 1
NO_CDEVICE,
#else
{
sgopen, sgclose, eno_rdwrt, eno_rdwrt,
sgioctl, eno_stop, eno_reset, 0, eno_select,
eno_mmap, eno_strat, eno_getc, eno_putc, D_TAPE
},
#endif
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
NO_CDEVICE,
{
volopen, volclose, eno_rdwrt, eno_rdwrt,
volioctl, eno_stop, eno_reset, 0, (select_fcn_t *)seltrue,
eno_mmap, eno_strat, eno_getc, eno_putc, 0
},
};
int nchrdev = sizeof (cdevsw) / sizeof (cdevsw[0]);
uint64_t cdevsw_flags[sizeof (cdevsw) / sizeof (cdevsw[0])];
#include <sys/vnode.h>
int
isdisk(dev_t dev, int type)
{
dev_t maj = major(dev);
switch (type) {
case VCHR:
maj = chrtoblk(maj);
if (maj == NODEV) {
break;
}
case VBLK:
if (bdevsw[maj].d_type == D_DISK) {
return (1);
}
break;
}
return(0);
}
static int chrtoblktab[] = {
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV, NODEV,
NODEV,
};
dev_t
chrtoblk(dev_t dev)
{
int blkmaj;
if (major(dev) >= nchrdev)
return(NODEV);
blkmaj = chrtoblktab[major(dev)];
if (blkmaj == NODEV)
return(NODEV);
return(makedev(blkmaj, minor(dev)));
}
int
chrtoblk_set(int cdev, int bdev)
{
if (cdev >= nchrdev)
return (-1);
if (bdev != NODEV && bdev >= nblkdev)
return (-1);
chrtoblktab[cdev] = bdev;
return 0;
}
int iskmemdev(dev_t dev)
{
return (major(dev) == 3 && minor(dev) < 2);
}