#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/proc_internal.h>
#include <sys/kauth.h>
#include <sys/tty.h>
#include <sys/conf.h>
#include <sys/file_internal.h>
#include <sys/uio_internal.h>
#include <sys/kernel.h>
#include <sys/vnode.h>
#include <sys/vnode_internal.h>
#include <sys/stat.h>
#include <sys/user.h>
#include <sys/signalvar.h>
#include <sys/sysctl.h>
#include <miscfs/devfs/devfs.h>
#include <miscfs/devfs/devfsdefs.h>
#if CONFIG_MACF
#include <security/mac_framework.h>
#endif
#include "tty_dev.h"
static int _devfs_setattr(void *, unsigned short, uid_t, gid_t);
static void ptcwakeup(struct tty *tp, int flag);
__XNU_PRIVATE_EXTERN d_open_t ptsopen;
__XNU_PRIVATE_EXTERN d_close_t ptsclose;
__XNU_PRIVATE_EXTERN d_read_t ptsread;
__XNU_PRIVATE_EXTERN d_write_t ptswrite;
__XNU_PRIVATE_EXTERN d_ioctl_t ptyioctl;
__XNU_PRIVATE_EXTERN d_stop_t ptsstop;
__XNU_PRIVATE_EXTERN d_reset_t ptsreset;
__XNU_PRIVATE_EXTERN d_select_t ptsselect;
__XNU_PRIVATE_EXTERN d_open_t ptcopen;
__XNU_PRIVATE_EXTERN d_close_t ptcclose;
__XNU_PRIVATE_EXTERN d_read_t ptcread;
__XNU_PRIVATE_EXTERN d_write_t ptcwrite;
__XNU_PRIVATE_EXTERN d_stop_t ptcstop;
__XNU_PRIVATE_EXTERN d_reset_t ptcreset;
__XNU_PRIVATE_EXTERN d_select_t ptcselect;
static int
_devfs_setattr(void * handle, unsigned short mode, uid_t uid, gid_t gid)
{
devdirent_t *direntp = (devdirent_t *)handle;
devnode_t *devnodep;
int error = EACCES;
vfs_context_t ctx = vfs_context_current();;
struct vnode_attr va;
VATTR_INIT(&va);
VATTR_SET(&va, va_uid, uid);
VATTR_SET(&va, va_gid, gid);
VATTR_SET(&va, va_mode, mode & ALLPERMS);
if (direntp == NULL || (devnodep = direntp->de_dnp) == NULL) {
error = ERESTART;
goto out;
}
if (devnodep->dn_clone == NULL) {
struct nameidata nd;
char name[128];
snprintf(name, sizeof(name), "/dev/%s", direntp->de_name);
NDINIT(&nd, LOOKUP, OP_SETATTR, FOLLOW, UIO_SYSSPACE, CAST_USER_ADDR_T(name), ctx);
error = namei(&nd);
if (error)
goto out;
error = vnode_setattr(nd.ni_vp, &va, ctx);
vnode_put(nd.ni_vp);
nameidone(&nd);
goto out;
}
out:
return(error);
}
#define BUFSIZ 100
static struct tty_dev_t *tty_dev_head;
__private_extern__ void
tty_dev_register(struct tty_dev_t *driver)
{
if (driver) {
driver->next = tty_dev_head;
tty_dev_head = driver;
}
}
static struct tty_dev_t *
pty_get_driver(dev_t dev)
{
int major = major(dev);
struct tty_dev_t *driver;
for (driver = tty_dev_head; driver != NULL; driver = driver->next) {
if ((driver->master == major || driver->slave == major)) {
break;
}
}
return driver;
}
static struct ptmx_ioctl *
pty_get_ioctl(dev_t dev, int open_flag, struct tty_dev_t **out_driver)
{
struct tty_dev_t *driver = pty_get_driver(dev);
if (out_driver) {
*out_driver = driver;
}
if (driver && driver->open) {
return driver->open(minor(dev), open_flag);
}
return NULL;
}
static int
pty_free_ioctl(dev_t dev, int open_flag)
{
struct tty_dev_t *driver = pty_get_driver(dev);
if (driver && driver->free) {
return driver->free(minor(dev), open_flag);
}
return 0;
}
static int
pty_get_name(dev_t dev, char *buffer, size_t size)
{
struct tty_dev_t *driver = pty_get_driver(dev);
if (driver && driver->name) {
return driver->name(minor(dev), buffer, size);
}
return 0;
}
__private_extern__ int
ptsopen(dev_t dev, int flag, __unused int devtype, __unused struct proc *p)
{
int error;
struct tty_dev_t *driver;
struct ptmx_ioctl *pti = pty_get_ioctl(dev, PF_OPEN_S, &driver);
if (pti == NULL) {
return ENXIO;
}
if (!(pti->pt_flags & PF_UNLOCKED)) {
return EAGAIN;
}
struct tty *tp = pti->pt_tty;
tty_lock(tp);
if ((tp->t_state & TS_ISOPEN) == 0) {
termioschars(&tp->t_termios);
tp->t_iflag = TTYDEF_IFLAG;
tp->t_oflag = TTYDEF_OFLAG;
tp->t_lflag = TTYDEF_LFLAG;
tp->t_cflag = TTYDEF_CFLAG;
tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
ttsetwater(tp);
} else if ((tp->t_state & TS_XCLUDE) && kauth_cred_issuser(kauth_cred_get())) {
error = EBUSY;
goto out;
}
if (tp->t_oproc)
(void)(*linesw[tp->t_line].l_modem)(tp, 1);
while ((tp->t_state & TS_CARR_ON) == 0) {
if (flag&FNONBLOCK)
break;
error = ttysleep(tp, TSA_CARR_ON(tp), TTIPRI | PCATCH, __FUNCTION__, 0);
if (error)
goto out;
}
error = (*linesw[tp->t_line].l_open)(dev, tp);
pti->pt_flags |= PF_OPEN_S;
CLR(tp->t_state, TS_IOCTL_NOT_OK);
if (error == 0)
ptcwakeup(tp, FREAD|FWRITE);
out:
tty_unlock(tp);
return (error);
}
__private_extern__ int
ptsclose(dev_t dev, int flag, __unused int mode, __unused proc_t p)
{
int err;
#define FIX_VSX_HANG 1
#ifdef FIX_VSX_HANG
int save_timeout;
#endif
struct tty_dev_t *driver;
struct ptmx_ioctl *pti = pty_get_ioctl(dev, 0, &driver);
struct tty *tp;
if (pti == NULL)
return (ENXIO);
tp = pti->pt_tty;
tty_lock(tp);
#ifdef FIX_VSX_HANG
save_timeout = tp->t_timeout;
tp->t_timeout = 60;
#endif
err = (*linesw[tp->t_line].l_close)(tp, flag);
ptsstop(tp, FREAD|FWRITE);
(void) ttyclose(tp);
#ifdef FIX_VSX_HANG
tp->t_timeout = save_timeout;
#endif
tty_unlock(tp);
if ((flag & IO_REVOKE) == IO_REVOKE && driver->revoke) {
driver->revoke(minor(dev), tp);
}
pty_free_ioctl(dev, PF_OPEN_S);
return (err);
}
__private_extern__ int
ptsread(dev_t dev, struct uio *uio, int flag)
{
proc_t p = current_proc();
struct ptmx_ioctl *pti = pty_get_ioctl(dev, 0, NULL);
struct tty *tp;
int error = 0;
struct uthread *ut;
struct pgrp *pg;
if (pti == NULL)
return (ENXIO);
tp = pti->pt_tty;
tty_lock(tp);
ut = (struct uthread *)get_bsdthread_info(current_thread());
again:
if (pti->pt_flags & PF_REMOTE) {
while (isbackground(p, tp)) {
if ((p->p_sigignore & sigmask(SIGTTIN)) ||
(ut->uu_sigmask & sigmask(SIGTTIN)) ||
p->p_lflag & P_LPPWAIT) {
error = EIO;
goto out;
}
pg = proc_pgrp(p);
if (pg == PGRP_NULL) {
error = EIO;
goto out;
}
tty_unlock(tp);
if (pg->pg_jobc == 0) {
pg_rele(pg);
tty_lock(tp);
error = EIO;
goto out;
}
pgsignal(pg, SIGTTIN, 1);
pg_rele(pg);
tty_lock(tp);
error = ttysleep(tp, &ptsread, TTIPRI | PCATCH | PTTYBLOCK, __FUNCTION__, hz);
if (error)
goto out;
}
if (tp->t_canq.c_cc == 0) {
if (flag & IO_NDELAY) {
error = EWOULDBLOCK;
goto out;
}
error = ttysleep(tp, TSA_PTS_READ(tp), TTIPRI | PCATCH, __FUNCTION__, 0);
if (error)
goto out;
goto again;
}
while (tp->t_canq.c_cc > 1 && uio_resid(uio) > 0) {
int cc;
char buf[BUFSIZ];
cc = MIN((int)uio_resid(uio), BUFSIZ);
cc = MIN(cc, tp->t_canq.c_cc - 1);
cc = q_to_b(&tp->t_canq, (u_char *)buf, cc);
error = uiomove(buf, cc, uio);
if (error)
break;
}
if (tp->t_canq.c_cc == 1)
(void) getc(&tp->t_canq);
if (tp->t_canq.c_cc)
goto out;
} else
if (tp->t_oproc)
error = (*linesw[tp->t_line].l_read)(tp, uio, flag);
ptcwakeup(tp, FWRITE);
out:
tty_unlock(tp);
return (error);
}
__private_extern__ int
ptswrite(dev_t dev, struct uio *uio, int flag)
{
struct ptmx_ioctl *pti = pty_get_ioctl(dev, 0, NULL);
struct tty *tp;
int error;
if (pti == NULL)
return (ENXIO);
tp = pti->pt_tty;
tty_lock(tp);
if (tp->t_oproc == 0)
error = EIO;
else
error = (*linesw[tp->t_line].l_write)(tp, uio, flag);
tty_unlock(tp);
return (error);
}
static void
ptsstart(struct tty *tp)
{
struct ptmx_ioctl *pti = pty_get_ioctl(tp->t_dev, 0, NULL);
if (pti == NULL)
goto out;
if (tp->t_state & TS_TTSTOP)
goto out;
if (pti->pt_flags & PF_STOPPED) {
pti->pt_flags &= ~PF_STOPPED;
pti->pt_send = TIOCPKT_START;
}
ptcwakeup(tp, FREAD);
out:
return;
}
static void
ptcwakeup(struct tty *tp, int flag)
{
struct ptmx_ioctl *pti = pty_get_ioctl(tp->t_dev, 0, NULL);
if (pti == NULL)
return;
if (flag & FREAD) {
selwakeup(&pti->pt_selr);
wakeup(TSA_PTC_READ(tp));
}
if (flag & FWRITE) {
selwakeup(&pti->pt_selw);
wakeup(TSA_PTC_WRITE(tp));
}
}
__private_extern__ int
ptcopen(dev_t dev, __unused int flag, __unused int devtype, __unused proc_t p)
{
struct tty_dev_t *driver;
struct ptmx_ioctl *pti = pty_get_ioctl(dev, PF_OPEN_M, &driver);
if (pti == NULL) {
return (ENXIO);
} else if (pti == (struct ptmx_ioctl*)-1) {
return (EREDRIVEOPEN);
}
struct tty *tp = pti->pt_tty;
tty_lock(tp);
if (tp->t_oproc || (tp->t_state & TS_ISOPEN)) {
tty_unlock(tp);
if (!tp->t_oproc) {
pty_free_ioctl(dev, PF_OPEN_M);
}
return EBUSY;
}
tp->t_oproc = ptsstart;
CLR(tp->t_state, TS_ZOMBIE);
SET(tp->t_state, TS_IOCTL_NOT_OK);
#ifdef sun4c
tp->t_stop = ptsstop;
#endif
(void)(*linesw[tp->t_line].l_modem)(tp, 1);
tp->t_lflag &= ~EXTPROC;
if (driver->open_reset) {
pti->pt_flags = PF_UNLOCKED;
pti->pt_send = 0;
pti->pt_ucntl = 0;
}
tty_unlock(tp);
return 0;
}
__private_extern__ int
ptcclose(dev_t dev, __unused int flags, __unused int fmt, __unused proc_t p)
{
struct tty_dev_t *driver;
struct ptmx_ioctl *pti = pty_get_ioctl(dev, 0, &driver);
struct tty *tp;
if (pti == NULL)
return (ENXIO);
tp = pti->pt_tty;
tty_lock(tp);
(void)(*linesw[tp->t_line].l_modem)(tp, 0);
if (tp->t_state & TS_ISOPEN) {
tp->t_state &= ~(TS_CARR_ON | TS_CONNECTED);
tp->t_state |= TS_ZOMBIE;
ttyflush(tp, FREAD | FWRITE);
}
tp->t_oproc = 0;
tty_unlock(tp);
pty_free_ioctl(dev, PF_OPEN_M);
#if CONFIG_MACF
if (driver->mac_notify) {
mac_pty_notify_close(p, tp, dev, NULL);
}
#endif
return (0);
}
__private_extern__ int
ptcread(dev_t dev, struct uio *uio, int flag)
{
struct ptmx_ioctl *pti = pty_get_ioctl(dev, 0, NULL);
struct tty *tp;
char buf[BUFSIZ];
int error = 0, cc;
if (pti == NULL)
return (ENXIO);
tp = pti->pt_tty;
tty_lock(tp);
for (;;) {
if (tp->t_state & TS_ISOPEN) {
if (pti->pt_flags & PF_PKT && pti->pt_send) {
error = ureadc((int)pti->pt_send, uio);
if (error)
goto out;
if (pti->pt_send & TIOCPKT_IOCTL) {
cc = MIN((int)uio_resid(uio),
(int)sizeof(tp->t_termios));
uiomove((caddr_t)&tp->t_termios, cc,
uio);
}
pti->pt_send = 0;
goto out;
}
if (pti->pt_flags & PF_UCNTL && pti->pt_ucntl) {
error = ureadc((int)pti->pt_ucntl, uio);
if (error)
goto out;
pti->pt_ucntl = 0;
goto out;
}
if (tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0)
break;
}
if ((tp->t_state & TS_CONNECTED) == 0)
goto out;
if (flag & IO_NDELAY) {
error = EWOULDBLOCK;
goto out;
}
error = ttysleep(tp, TSA_PTC_READ(tp), TTIPRI | PCATCH, __FUNCTION__, 0);
if (error)
goto out;
}
if (pti->pt_flags & (PF_PKT|PF_UCNTL))
error = ureadc(0, uio);
while (uio_resid(uio) > 0 && error == 0) {
cc = q_to_b(&tp->t_outq, (u_char *)buf, MIN((int)uio_resid(uio), BUFSIZ));
if (cc <= 0)
break;
error = uiomove(buf, cc, uio);
}
(*linesw[tp->t_line].l_start)(tp);
out:
tty_unlock(tp);
return (error);
}
__private_extern__ int
ptsstop(struct tty* tp, int flush)
{
struct ptmx_ioctl *pti = pty_get_ioctl(tp->t_dev, 0, NULL);
int flag;
if (pti == NULL)
return (ENXIO);
if (flush == 0) {
flush = TIOCPKT_STOP;
pti->pt_flags |= PF_STOPPED;
} else
pti->pt_flags &= ~PF_STOPPED;
pti->pt_send |= flush;
flag = 0;
if (flush & FREAD)
flag |= FWRITE;
if (flush & FWRITE)
flag |= FREAD;
ptcwakeup(tp, flag);
return 0;
}
__private_extern__ int
ptsreset(__unused int uban)
{
return (0);
}
int
ptsselect(dev_t dev, int rw, void *wql, proc_t p)
{
struct ptmx_ioctl *pti = pty_get_ioctl(dev, 0, NULL);
struct tty *tp;
int retval = 0;
if (pti == NULL)
return (ENXIO);
tp = pti->pt_tty;
if (tp == NULL)
return (ENXIO);
tty_lock(tp);
switch (rw) {
case FREAD:
if (ISSET(tp->t_state, TS_ZOMBIE)) {
retval = 1;
break;
}
retval = ttnread(tp);
if (retval > 0) {
break;
}
selrecord(p, &tp->t_rsel, wql);
break;
case FWRITE:
if (ISSET(tp->t_state, TS_ZOMBIE)) {
retval = 1;
break;
}
if ((tp->t_outq.c_cc <= tp->t_lowat) &&
ISSET(tp->t_state, TS_CONNECTED)) {
retval = tp->t_hiwat - tp->t_outq.c_cc;
break;
}
selrecord(p, &tp->t_wsel, wql);
break;
}
tty_unlock(tp);
return (retval);
}
__private_extern__ int
ptcselect(dev_t dev, int rw, void *wql, proc_t p)
{
struct tty_dev_t *driver;
struct ptmx_ioctl *pti = pty_get_ioctl(dev, 0, &driver);
struct tty *tp;
int retval = 0;
if (pti == NULL)
return (ENXIO);
tp = pti->pt_tty;
tty_lock(tp);
if ((tp->t_state & TS_CONNECTED) == 0) {
retval = 1;
goto out;
}
switch (rw) {
case FREAD:
if ((tp->t_state&TS_ISOPEN) &&
tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0) {
retval = (driver->fix_7828447) ? tp->t_outq.c_cc : 1;
break;
}
case 0:
if ((tp->t_state&TS_ISOPEN) &&
((pti->pt_flags & PF_PKT && pti->pt_send) ||
(pti->pt_flags & PF_UCNTL && pti->pt_ucntl))) {
retval = 1;
break;
}
selrecord(p, &pti->pt_selr, wql);
break;
case FWRITE:
if (tp->t_state&TS_ISOPEN) {
if (pti->pt_flags & PF_REMOTE) {
if (tp->t_canq.c_cc == 0) {
retval = (driver->fix_7828447) ? (TTYHOG - 1) : 1;
break;
}
} else {
retval = (TTYHOG - 2) - (tp->t_rawq.c_cc + tp->t_canq.c_cc);
if (retval > 0) {
retval = (driver->fix_7828447) ? retval : 1;
break;
}
if (tp->t_canq.c_cc == 0 && (tp->t_lflag&ICANON)) {
retval = 1;
break;
}
retval = 0;
}
}
selrecord(p, &pti->pt_selw, wql);
break;
}
out:
tty_unlock(tp);
return (retval);
}
__private_extern__ int
ptcstop(__unused struct tty *tp, __unused int flush)
{
return (0);
}
__private_extern__ int
ptcreset(__unused int uban)
{
return (0);
}
__private_extern__ int
ptcwrite(dev_t dev, struct uio *uio, int flag)
{
struct ptmx_ioctl *pti = pty_get_ioctl(dev, 0, NULL);
struct tty *tp;
u_char *cp = NULL;
int cc = 0;
u_char locbuf[BUFSIZ];
int wcnt = 0;
int error = 0;
if (pti == NULL)
return (ENXIO);
tp = pti->pt_tty;
tty_lock(tp);
again:
if ((tp->t_state & TS_ISOPEN) == 0)
goto block;
if (pti->pt_flags & PF_REMOTE) {
if (tp->t_canq.c_cc)
goto block;
while ((uio_resid(uio) > 0 || cc > 0) &&
tp->t_canq.c_cc < TTYHOG - 1) {
if (cc == 0) {
cc = MIN((int)uio_resid(uio), BUFSIZ);
cc = MIN(cc, TTYHOG - 1 - tp->t_canq.c_cc);
cp = locbuf;
error = uiomove((caddr_t)cp, cc, uio);
if (error)
goto out;
if ((tp->t_state & TS_ISOPEN) == 0) {
uio_setresid(uio, (uio_resid(uio) + cc));
error = EIO;
goto out;
}
}
if (cc > 0) {
cc = b_to_q((u_char *)cp, cc, &tp->t_canq);
if (cc > 0)
break;
}
}
uio_setresid(uio, (uio_resid(uio) + cc));
(void) putc(0, &tp->t_canq);
ttwakeup(tp);
wakeup(TSA_PTS_READ(tp));
goto out;
}
while (uio_resid(uio) > 0 || cc > 0) {
if (cc == 0) {
cc = MIN((int)uio_resid(uio), BUFSIZ);
cp = locbuf;
error = uiomove((caddr_t)cp, cc, uio);
if (error)
goto out;
if ((tp->t_state & TS_ISOPEN) == 0) {
uio_setresid(uio, (uio_resid(uio) + cc));
error = EIO;
goto out;
}
}
while (cc > 0) {
if ((tp->t_rawq.c_cc + tp->t_canq.c_cc) >= TTYHOG - 2 &&
(tp->t_canq.c_cc > 0 || !(tp->t_lflag&ICANON))) {
wakeup(TSA_HUP_OR_INPUT(tp));
goto block;
}
(*linesw[tp->t_line].l_rint)(*cp++, tp);
wcnt++;
cc--;
}
cc = 0;
}
out:
tty_unlock(tp);
return (error);
block:
if ((tp->t_state & TS_CONNECTED) == 0) {
uio_setresid(uio, (uio_resid(uio) + cc));
error = EIO;
goto out;
}
if (flag & IO_NDELAY) {
uio_setresid(uio, (uio_resid(uio) + cc));
if (wcnt == 0)
error = EWOULDBLOCK;
goto out;
}
error = ttysleep(tp, TSA_PTC_WRITE(tp), TTOPRI | PCATCH, __FUNCTION__, 0);
if (error) {
uio_setresid(uio, (uio_resid(uio) + cc));
goto out;
}
goto again;
}
__private_extern__ int
ptyioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
{
struct tty_dev_t *driver;
struct ptmx_ioctl *pti = pty_get_ioctl(dev, 0, &driver);
struct tty *tp;
int stop, error = 0;
int allow_ext_ioctl = 1;
if (pti == NULL)
return (ENXIO);
tp = pti->pt_tty;
tty_lock(tp);
u_char *cc = tp->t_cc;
if (major(dev) == driver->master &&
driver->fix_7070978 &&
ISSET(tp->t_state, TS_IOCTL_NOT_OK)) {
allow_ext_ioctl = 0;
}
if (cmd == TIOCEXT && allow_ext_ioctl) {
if (*(int *)data) {
if (pti->pt_flags & PF_PKT) {
pti->pt_send |= TIOCPKT_IOCTL;
ptcwakeup(tp, FREAD);
}
tp->t_lflag |= EXTPROC;
} else {
if ((tp->t_lflag & EXTPROC) &&
(pti->pt_flags & PF_PKT)) {
pti->pt_send |= TIOCPKT_IOCTL;
ptcwakeup(tp, FREAD);
}
tp->t_lflag &= ~EXTPROC;
}
goto out;
} else
if (cdevsw[major(dev)].d_open == ptcopen) {
switch (cmd) {
case TIOCGPGRP:
*(int *)data = tp->t_pgrp ? tp->t_pgrp->pg_id : 0;
goto out;
case TIOCPKT:
if (*(int *)data) {
if (pti->pt_flags & PF_UCNTL) {
error = EINVAL;
goto out;
}
pti->pt_flags |= PF_PKT;
} else
pti->pt_flags &= ~PF_PKT;
goto out;
case TIOCUCNTL:
if (*(int *)data) {
if (pti->pt_flags & PF_PKT) {
error = EINVAL;
goto out;
}
pti->pt_flags |= PF_UCNTL;
} else
pti->pt_flags &= ~PF_UCNTL;
goto out;
case TIOCREMOTE:
if (*(int *)data)
pti->pt_flags |= PF_REMOTE;
else
pti->pt_flags &= ~PF_REMOTE;
ttyflush(tp, FREAD|FWRITE);
goto out;
case TIOCSETP:
case TIOCSETN:
case TIOCSETD:
case TIOCSETA_32:
case TIOCSETAW_32:
case TIOCSETAF_32:
case TIOCSETA_64:
case TIOCSETAW_64:
case TIOCSETAF_64:
ndflush(&tp->t_outq, tp->t_outq.c_cc);
break;
case TIOCSIG:
if (*(unsigned int *)data >= NSIG ||
*(unsigned int *)data == 0) {
error = EINVAL;
goto out;
}
if ((tp->t_lflag&NOFLSH) == 0)
ttyflush(tp, FREAD|FWRITE);
if ((*(unsigned int *)data == SIGINFO) &&
((tp->t_lflag&NOKERNINFO) == 0))
ttyinfo_locked(tp);
tty_unlock(tp);
tty_pgsignal(tp, *(unsigned int *)data, 1);
tty_lock(tp);
goto out;
case TIOCPTYGRANT:
{
error = _devfs_setattr(pti->pt_devhandle, 0620, kauth_getuid(), GID_TTY);
if (major(dev) == driver->master) {
if (driver->mac_notify) {
#if CONFIG_MACF
if (!error) {
tty_unlock(tp);
mac_pty_notify_grant(p, tp, dev, NULL);
tty_lock(tp);
}
#endif
} else {
error = 0;
}
}
goto out;
}
case TIOCPTYGNAME:
pty_get_name(dev, data, 128);
error = 0;
goto out;
case TIOCPTYUNLK:
if (major(dev) == driver->master) {
pti->pt_flags |= PF_UNLOCKED;
}
error = 0;
goto out;
}
if (!allow_ext_ioctl) {
error = ENOTTY;
goto out;
}
}
error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
if (error == ENOTTY) {
error = ttioctl_locked(tp, cmd, data, flag, p);
if (error == ENOTTY) {
if (pti->pt_flags & PF_UCNTL && (cmd & ~0xff) == UIOCCMD(0)) {
if (cmd & 0xff) {
pti->pt_ucntl = (u_char)cmd;
ptcwakeup(tp, FREAD);
}
error = 0;
goto out;
} else if (cmd == TIOCSBRK || cmd == TIOCCBRK) {
error = 0;
goto out;
}
}
}
if ((tp->t_lflag&EXTPROC) && (pti->pt_flags & PF_PKT)) {
switch(cmd) {
case TIOCSETA_32:
case TIOCSETAW_32:
case TIOCSETAF_32:
case TIOCSETA_64:
case TIOCSETAW_64:
case TIOCSETAF_64:
case TIOCSETP:
case TIOCSETN:
case TIOCSETC:
case TIOCSLTC:
case TIOCLBIS:
case TIOCLBIC:
case TIOCLSET:
pti->pt_send |= TIOCPKT_IOCTL;
ptcwakeup(tp, FREAD);
default:
break;
}
}
stop = (tp->t_iflag & IXON) && CCEQ(cc[VSTOP], CTRL('s'))
&& CCEQ(cc[VSTART], CTRL('q'));
if (pti->pt_flags & PF_NOSTOP) {
if (stop) {
pti->pt_send &= ~TIOCPKT_NOSTOP;
pti->pt_send |= TIOCPKT_DOSTOP;
pti->pt_flags &= ~PF_NOSTOP;
ptcwakeup(tp, FREAD);
}
} else {
if (!stop) {
pti->pt_send &= ~TIOCPKT_DOSTOP;
pti->pt_send |= TIOCPKT_NOSTOP;
pti->pt_flags |= PF_NOSTOP;
ptcwakeup(tp, FREAD);
}
}
out:
tty_unlock(tp);
return (error);
}