#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);
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,
};
const 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 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_select_t ptsselect;
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 oslog_streamopen;
extern d_close_t oslog_streamclose;
extern d_read_t oslog_streamread;
extern d_ioctl_t oslog_streamioctl;
extern d_select_t oslog_streamselect;
extern d_open_t oslogopen;
extern d_close_t oslogclose;
extern d_select_t oslogselect;
extern d_ioctl_t oslogioctl;
#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[] = {
[0] = {
cnopen, cnclose, cnread, cnwrite,
cnioctl, nullstop, nullreset, 0, cnselect,
eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY
},
[1] = NO_CDEVICE,
[2] = {
cttyopen, nullclose, cttyread, cttywrite,
cttyioctl, nullstop, nullreset, 0, cttyselect,
eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY
},
[3] = {
nullopen, nullclose, mmread, mmwrite,
mmioctl, nullstop, nullreset, 0, mmselect,
mmmmap, eno_strat, eno_getc, eno_putc, D_DISK
},
[PTC_MAJOR] = {
ptsopen, ptsclose, ptsread, ptswrite,
ptyioctl, ptsstop, nullreset, 0, ptsselect,
eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY
},
[PTS_MAJOR] = {
ptcopen, ptcclose, ptcread, ptcwrite,
ptyioctl, nullstop, nullreset, 0, ptcselect,
eno_mmap, eno_strat, eno_getc, eno_putc, D_TTY
},
[6] = {
logopen, logclose, logread, eno_rdwrt,
logioctl, eno_stop, nullreset, 0, logselect,
eno_mmap, eno_strat, eno_getc, eno_putc, 0
},
[7] = {
oslogopen, oslogclose, eno_rdwrt, eno_rdwrt,
oslogioctl, eno_stop, nullreset, 0, oslogselect,
eno_mmap, eno_strat, eno_getc, eno_putc, 0
},
[8] = {
oslog_streamopen, oslog_streamclose, oslog_streamread, eno_rdwrt,
oslog_streamioctl, eno_stop, nullreset, 0, oslog_streamselect,
eno_mmap, eno_strat, eno_getc, eno_putc, 0
},
[9 ... 11] = NO_CDEVICE,
[12] = {
kmopen, kmclose, kmread, kmwrite,
kmioctl, nullstop, nullreset, km_tty, ttselect,
eno_mmap, eno_strat, eno_getc, eno_putc, 0
},
[13 ... 41] = NO_CDEVICE,
[42] = {
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
}
};
const 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;
}