35#include "opt_capsicum.h"
36#include "opt_printf.h"
39#include <sys/capsicum.h>
44#include <sys/filedesc.h>
47#include <sys/ioctl_compat.h>
49#include <sys/kernel.h>
50#include <sys/limits.h>
51#include <sys/malloc.h>
56#include <sys/serial.h>
57#include <sys/signal.h>
60#include <sys/sysctl.h>
63#include <sys/ttycom.h>
65#include <sys/ttydefaults.h>
70#include <fs/devfs/devfs.h>
72#include <machine/stdarg.h>
78static TAILQ_HEAD(, tty) tty_list = TAILQ_HEAD_INITIALIZER(tty_list);
79static struct sx tty_list_sx;
81static unsigned int tty_list_count = 0;
84static struct cdev *dev_console;
85static const char *dev_console_filename;
90#define TTYSUP_IFLAG (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|ISTRIP|\
91 INLCR|IGNCR|ICRNL|IXON|IXOFF|IXANY|IMAXBEL)
92#define TTYSUP_OFLAG (OPOST|ONLCR|TAB3|ONOEOT|OCRNL|ONOCR|ONLRET)
93#define TTYSUP_LFLAG (ECHOKE|ECHOE|ECHOK|ECHO|ECHONL|ECHOPRT|\
94 ECHOCTL|ISIG|ICANON|ALTWERASE|IEXTEN|TOSTOP|\
95 FLUSHO|NOKERNINFO|NOFLSH)
96#define TTYSUP_CFLAG (CIGNORE|CSIZE|CSTOPB|CREAD|PARENB|PARODD|\
97 HUPCL|CLOCAL|CCTS_OFLOW|CRTS_IFLOW|CDTR_IFLOW|\
98 CDSR_OFLOW|CCAR_OFLOW|CNO_RTSDTR)
100#define TTY_CALLOUT(tp,d) (dev2unit(d) & TTYUNIT_CALLOUT)
102static int tty_drainwait = 5 * 60;
103SYSCTL_INT(_kern, OID_AUTO, tty_drainwait, CTLFLAG_RWTUN,
104 &tty_drainwait, 0,
"Default output drain timeout in seconds");
110#define TTYBUF_MAX 65536
112#ifdef PRINTF_BUFR_SIZE
113#define TTY_PRBUF_SIZE PRINTF_BUFR_SIZE
115#define TTY_PRBUF_SIZE 256
125tty_watermarks(
struct tty *tp)
131 if (tp->t_termios.c_cflag & CREAD)
132 bs = MIN(tp->t_termios.c_ispeed / 5,
TTYBUF_MAX);
138 tp->t_inlow = (ttyinq_getallocatedsize(&tp->t_inq) * 9) / 10;
141 bs = MIN(tp->t_termios.c_ospeed / 5,
TTYBUF_MAX);
147 tp->t_outlow = (ttyoutq_getallocatedsize(&tp->t_outq) * 9) / 10;
155 sbintime_t timeout_at;
159 if (ttyhook_hashook(tp, getc_inject))
169 timeout_at = getsbinuptime() + SBT_1S;
170 else if (tp->t_drainwait != 0)
171 timeout_at = getsbinuptime() + SBT_1S * tp->t_drainwait;
184 bytes = ttyoutq_bytesused(&tp->t_outq);
186 if (ttyoutq_bytesused(&tp->t_outq) == 0 && !ttydevsw_busy(tp))
190 ttydevsw_outwakeup(tp);
192 if (error != 0 && error != EWOULDBLOCK)
194 else if (timeout_at == 0 || getsbinuptime() < timeout_at)
196 else if (leaving && ttyoutq_bytesused(&tp->t_outq) < bytes) {
199 timeout_at += SBT_1S;
200 bytes = ttyoutq_bytesused(&tp->t_outq);
220 if (tty_gone(tp) || !tty_opened(tp)) {
233 tty_assert_locked(tp);
235 if (tty_opened(tp) || tp->t_flags & TF_OPENCLOSE) {
241 tp->t_flags |= TF_OPENCLOSE;
258 knlist_clear(&tp->t_inpoll.si_note, 1);
259 knlist_clear(&tp->t_outpoll.si_note, 1);
264 tp->t_flags &= ~TF_OPENCLOSE;
265 cv_broadcast(&tp->t_dcdwait);
292 while (tp->t_flags & TF_OPENCLOSE) {
293 error =
tty_wait(tp, &tp->t_dcdwait);
299 tp->t_flags |= TF_OPENCLOSE;
306 if (tp->t_flags & (TF_OPENED_CONS | TF_OPENED_IN)) {
311 if (tp->t_flags & TF_OPENED_OUT) {
317 if (tp->t_flags & TF_EXCLUDE &&
priv_check(td, PRIV_TTY_EXCLUSIVE)) {
322 if (!tty_opened(tp)) {
325 tp->t_termios = tp->t_termios_init_out;
327 tp->t_termios = tp->t_termios_init_in;
328 ttydevsw_param(tp, &tp->t_termios);
331 tp->t_termios.c_cflag |= CLOCAL;
333 if ((tp->t_termios.c_cflag & CNO_RTSDTR) == 0)
334 ttydevsw_modem(tp, SER_DTR|SER_RTS, 0);
336 error = ttydevsw_open(tp);
341 error = tty_watermarks(tp);
347 if ((oflags & O_NONBLOCK) == 0 &&
348 (tp->t_termios.c_cflag & CLOCAL) == 0) {
349 while ((ttydevsw_modem(tp, 0, 0) & SER_DCD) == 0) {
350 error =
tty_wait(tp, &tp->t_dcdwait);
356 if (dev == dev_console)
357 tp->t_flags |= TF_OPENED_CONS;
359 tp->t_flags |= TF_OPENED_OUT;
361 tp->t_flags |= TF_OPENED_IN;
362 MPASS((tp->t_flags & (TF_OPENED_CONS | TF_OPENED_IN)) == 0 ||
363 (tp->t_flags & TF_OPENED_OUT) == 0);
365done: tp->t_flags &= ~TF_OPENCLOSE;
366 cv_broadcast(&tp->t_dcdwait);
374 struct thread *td __unused)
376 struct tty *tp = dev->si_drv1;
384 MPASS((tp->t_flags & (TF_OPENED_CONS | TF_OPENED_IN)) == 0 ||
385 (tp->t_flags & TF_OPENED_OUT) == 0);
386 if (dev == dev_console)
387 tp->t_flags &= ~TF_OPENED_CONS;
389 tp->t_flags &= ~(TF_OPENED_IN|TF_OPENED_OUT);
391 if (tp->t_flags & TF_OPENED) {
400 tp->t_flags &= ~TF_EXCLUDE;
405 cv_broadcast(&tp->t_bgwait);
406 cv_broadcast(&tp->t_dcdwait);
417 tty_assert_locked(tp);
419 return (p->p_session == tp->t_session && p->p_flag & P_CONTROLT);
430 MPASS(sig == SIGTTIN || sig == SIGTTOU);
431 tty_assert_locked(tp);
443 if (p->p_pgrp != pg) {
458 if (!
tty_is_ctty(tp, p) || p->p_pgrp == tp->t_pgrp) {
465 if (SIGISMEMBER(p->p_sigacts->ps_sigignore, sig) ||
466 SIGISMEMBER(td->td_sigmask, sig)) {
470 return (sig == SIGTTOU ? 0 : EIO);
473 if ((p->p_flag & P_PPWAIT) != 0 ||
474 (pg->pg_flags & PGRP_ORPHANED) != 0) {
488 ksi.ksi_code = SI_KERNEL;
493 pgsignal(pg, ksi.ksi_signo, 1, &ksi);
496 error =
tty_wait(tp, &tp->t_bgwait);
505 struct tty *tp = dev->si_drv1;
518done:
if (error == ENXIO)
526 struct tty *tp = dev->si_drv1;
533 if (tp->t_termios.c_lflag & TOSTOP) {
539 if (ioflag & IO_NDELAY && tp->t_flags & TF_BUSY_OUT) {
544 while (tp->t_flags & TF_BUSY_OUT) {
545 error =
tty_wait(tp, &tp->t_outserwait);
550 tp->t_flags |= TF_BUSY_OUT;
551 defer = sigdeferstop(SIGDEFERSTOP_ERESTART);
554 tp->t_flags &= ~TF_BUSY_OUT;
566 struct tty *tp = dev->si_drv1;
614 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
615 struct termios *old = &tp->t_termios;
616 struct termios *
new = (
struct termios *)
data;
618 &tp->t_termios_lock_out : &tp->t_termios_lock_in;
625 new->c_iflag = (old->c_iflag & lock->c_iflag) |
626 (new->c_iflag & ~lock->c_iflag);
627 new->c_oflag = (old->c_oflag & lock->c_oflag) |
628 (new->c_oflag & ~lock->c_oflag);
629 new->c_cflag = (old->c_cflag & lock->c_cflag) |
630 (new->c_cflag & ~lock->c_cflag);
631 new->c_lflag = (old->c_lflag & lock->c_lflag) |
632 (new->c_lflag & ~lock->c_lflag);
633 for (cc = 0; cc < NCCS; ++cc)
635 new->c_cc[cc] = old->c_cc[cc];
637 new->c_ispeed = old->c_ispeed;
639 new->c_ospeed = old->c_ospeed;
651 struct tty *tp = dev->si_drv1;
652 int error, revents = 0;
656 return ((events & (POLLIN|POLLRDNORM)) | POLLHUP);
658 if (events & (POLLIN|POLLRDNORM)) {
660 if (ttydisc_read_poll(tp) > 0)
661 revents |= events & (POLLIN|POLLRDNORM);
664 if (tp->t_flags & TF_ZOMBIE) {
667 }
else if (events & (POLLOUT|POLLWRNORM)) {
669 if (ttydisc_write_poll(tp) > 0)
670 revents |= events & (POLLOUT|POLLWRNORM);
674 if (events & (POLLIN|POLLRDNORM))
676 if (events & (POLLOUT|POLLWRNORM))
686ttydev_mmap(
struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr,
687 int nprot, vm_memattr_t *memattr)
689 struct tty *tp = dev->si_drv1;
697 error = ttydevsw_mmap(tp, offset, paddr, nprot, memattr);
710 struct tty *tp = kn->kn_hook;
718 struct tty *tp = kn->kn_hook;
720 tty_assert_locked(tp);
722 if (tty_gone(tp) || tp->t_flags & TF_ZOMBIE) {
723 kn->kn_flags |= EV_EOF;
726 kn->kn_data = ttydisc_read_poll(tp);
727 return (kn->kn_data > 0);
734 struct tty *tp = kn->kn_hook;
742 struct tty *tp = kn->kn_hook;
744 tty_assert_locked(tp);
747 kn->kn_flags |= EV_EOF;
750 kn->kn_data = ttydisc_write_poll(tp);
751 return (kn->kn_data > 0);
770 struct tty *tp = dev->si_drv1;
777 switch (kn->kn_filter) {
798 .d_version = D_VERSION,
816ttyil_open(
struct cdev *dev,
int oflags __unused,
int devtype __unused,
834 struct thread *td __unused)
841ttyil_rdwr(
struct cdev *dev __unused,
struct uio *uio __unused,
852 struct tty *tp = dev->si_drv1;
861 error = ttydevsw_cioctl(tp, dev2unit(dev), cmd,
data, td);
862 if (error != ENOIOCTL)
869 *(
struct termios*)
data = *(
struct termios*)dev->si_drv2;
876 *(
struct termios*)dev->si_drv2 = *(
struct termios*)
data;
879 *(
int *)
data = TTYDISC;
882 bzero(
data,
sizeof(
struct winsize));
893 .d_version = D_VERSION,
906 struct termios *t = &tp->t_termios_init_in;
908 t->c_cflag = TTYDEF_CFLAG;
909 t->c_iflag = TTYDEF_IFLAG;
910 t->c_lflag = TTYDEF_LFLAG;
911 t->c_oflag = TTYDEF_OFLAG;
912 t->c_ispeed = TTYDEF_SPEED;
913 t->c_ospeed = TTYDEF_SPEED;
914 memcpy(&t->c_cc, ttydefchars,
sizeof ttydefchars);
916 tp->t_termios_init_out = *t;
922 struct termios *ti = &tp->t_termios_init_in;
923 struct termios *to = &tp->t_termios_init_out;
926 ti->c_ispeed = ti->c_ospeed = s;
927 to->c_ispeed = to->c_ospeed = s;
930 ti->c_cflag |= CLOCAL;
931 to->c_cflag |= CLOCAL;
957 panic(
"Terminal device has output, while not implemented");
968 caddr_t
data __unused,
struct thread *td __unused)
976 u_long cmd __unused, caddr_t
data __unused,
struct thread *td __unused)
991 if (t->c_ispeed < B50)
993 else if (t->c_ispeed > B115200)
994 t->c_ispeed = B115200;
995 if (t->c_ospeed < B50)
997 else if (t->c_ospeed > B115200)
998 t->c_ospeed = B115200;
1006 int sigoff __unused)
1015 vm_paddr_t *paddr __unused,
int nprot __unused,
1016 vm_memattr_t *memattr __unused)
1032 panic(
"Terminal device freed without a free-handler");
1061#define PATCH_FUNC(x) do { \
1062 if (tsw->tsw_ ## x == NULL) \
1063 tsw->tsw_ ## x = ttydevsw_def ## x; \
1083 tp->t_devswsoftc = sc;
1084 tp->t_flags = tsw->tsw_flags;
1085 tp->t_drainwait = tty_drainwait;
1089 cv_init(&tp->t_inwait,
"ttyin");
1090 cv_init(&tp->t_outwait,
"ttyout");
1091 cv_init(&tp->t_outserwait,
"ttyosr");
1092 cv_init(&tp->t_bgwait,
"ttybg");
1093 cv_init(&tp->t_dcdwait,
"ttydcd");
1096 if (mutex != NULL) {
1099 tp->t_mtx = &tp->t_mtxobj;
1100 mtx_init(&tp->t_mtxobj,
"ttymtx", NULL, MTX_DEF);
1112 struct tty *tp = arg;
1134 if (tp->t_mtx == &tp->t_mtxobj)
1135 mtx_destroy(&tp->t_mtxobj);
1145 tty_assert_locked(tp);
1147#define TF_ACTIVITY (TF_GONE|TF_OPENED|TF_HOOK|TF_OPENCLOSE)
1148 if (tp->t_sessioncnt != 0 || (tp->t_flags &
TF_ACTIVITY) != TF_GONE) {
1163 sx_xlock(&tty_list_sx);
1164 TAILQ_REMOVE(&tty_list, tp, t_list);
1166 sx_xunlock(&tty_list_sx);
1175 MPASS(tp->t_sessioncnt > 0);
1176 tty_assert_locked(tp);
1178 if (tp->t_pgrp == pg)
1188 MPASS(tp->t_sessioncnt > 0);
1191 if (tp->t_session == sess) {
1192 tp->t_session = NULL;
1193 MPASS(tp->t_pgrp == NULL);
1203 tty_assert_locked(tp);
1204 MPASS(!tty_gone(tp));
1211 cv_broadcast(&tp->t_bgwait);
1212 cv_broadcast(&tp->t_dcdwait);
1214 tp->t_flags |= TF_GONE;
1221 struct session *session;
1245 session = p->p_session;
1246 if (session->s_ttyp == NULL || session->s_ttyp != tp) {
1251 if (!SESS_LEADER(p)) {
1258 vp = session->s_ttyvp;
1259 session->s_ttyp = NULL;
1260 session->s_ttyvp = NULL;
1261 session->s_ttydp = NULL;
1262 SESS_UNLOCK(session);
1265 p->p_flag &= ~P_CONTROLT;
1279 devfs_ctty_unref(vp);
1291 tty_assert_locked(tp);
1293 xt->xt_size =
sizeof(
struct xtty);
1294 xt->xt_insize = ttyinq_getsize(&tp->t_inq);
1295 xt->xt_incc = ttyinq_bytescanonicalized(&tp->t_inq);
1296 xt->xt_inlc = ttyinq_bytesline(&tp->t_inq);
1297 xt->xt_inlow = tp->t_inlow;
1298 xt->xt_outsize = ttyoutq_getsize(&tp->t_outq);
1299 xt->xt_outcc = ttyoutq_bytesused(&tp->t_outq);
1300 xt->xt_outlow = tp->t_outlow;
1301 xt->xt_column = tp->t_column;
1302 xt->xt_pgid = tp->t_pgrp ? tp->t_pgrp->pg_id : 0;
1303 xt->xt_sid = tp->t_session ? tp->t_session->s_sid : 0;
1304 xt->xt_flags = tp->t_flags;
1305 xt->xt_dev = tp->t_dev ? dev2udev(tp->t_dev) : (uint32_t)NODEV;
1311 unsigned long lsize;
1312 struct xtty *xtlist, *xt;
1316 sx_slock(&tty_list_sx);
1317 lsize = tty_list_count *
sizeof(
struct xtty);
1319 sx_sunlock(&tty_list_sx);
1323 xtlist = xt =
malloc(lsize, M_TTY, M_WAITOK);
1325 TAILQ_FOREACH(tp, &tty_list, t_list) {
1331 sx_sunlock(&tty_list_sx);
1333 error = SYSCTL_OUT(req, xtlist, lsize);
1334 free(xtlist, M_TTY);
1338SYSCTL_PROC(_kern, OID_AUTO, ttys, CTLTYPE_OPAQUE|CTLFLAG_RD|CTLFLAG_MPSAFE,
1348 const char *fmt, ...)
1351 struct make_dev_args args;
1352 struct cdev *dev, *init, *lock, *cua, *cinit, *
clock;
1353 const char *prefix =
"tty";
1354 char name[SPECNAMELEN - 3];
1361 if (tp->t_flags & TF_NOPREFIX)
1372 mode = S_IRUSR|S_IWUSR;
1375 uid = cred->cr_ruid;
1377 mode = S_IRUSR|S_IWUSR|S_IWGRP;
1380 flags =
flags & TTYMK_CLONING ? MAKEDEV_REF : 0;
1381 flags |= MAKEDEV_CHECKNAME;
1384 make_dev_args_init(&args);
1385 args.mda_flags =
flags;
1390 args.mda_mode =
mode;
1391 args.mda_si_drv1 = tp;
1397 init = lock = cua = cinit =
clock = NULL;
1400 if (tp->t_flags & TF_INITLOCK) {
1402 args.mda_unit = TTYUNIT_INIT;
1403 args.mda_si_drv1 = tp;
1404 args.mda_si_drv2 = &tp->t_termios_init_in;
1410 args.mda_unit = TTYUNIT_LOCK;
1411 args.mda_si_drv2 = &tp->t_termios_lock_in;
1419 if (tp->t_flags & TF_CALLOUT) {
1420 make_dev_args_init(&args);
1421 args.mda_flags =
flags;
1424 args.mda_uid = UID_UUCP;
1425 args.mda_gid = GID_DIALER;
1426 args.mda_mode = 0660;
1427 args.mda_unit = TTYUNIT_CALLOUT;
1428 args.mda_si_drv1 = tp;
1435 if (tp->t_flags & TF_INITLOCK) {
1437 args.mda_unit = TTYUNIT_CALLOUT | TTYUNIT_INIT;
1438 args.mda_si_drv2 = &tp->t_termios_init_out;
1444 args.mda_unit = TTYUNIT_CALLOUT | TTYUNIT_LOCK;
1445 args.mda_si_drv2 = &tp->t_termios_lock_out;
1453 sx_xlock(&tty_list_sx);
1454 TAILQ_INSERT_TAIL(&tty_list, tp, t_list);
1456 sx_xunlock(&tty_list_sx);
1484 tty_assert_locked(tp);
1485 MPASS(sig >= 1 && sig < NSIG);
1488 tp->t_flags &= ~TF_STOPPED;
1489 tp->t_termios.c_lflag &= ~FLUSHO;
1497 if ((s = tp->t_session) != NULL &&
1498 (p = atomic_load_ptr(&s->s_leader)) != NULL) {
1510 tty_assert_locked(tp);
1511 MPASS(sig >= 1 && sig < NSIG);
1514 tp->t_flags &= ~TF_STOPPED;
1515 tp->t_termios.c_lflag &= ~FLUSHO;
1517 if (sig == SIGINFO && !(tp->t_termios.c_lflag & NOKERNINFO))
1519 if (tp->t_pgrp != NULL) {
1520 ksiginfo_init(&ksi);
1521 ksi.ksi_signo = sig;
1522 ksi.ksi_code = SI_KERNEL;
1523 PGRP_LOCK(tp->t_pgrp);
1524 pgsignal(tp->t_pgrp, sig, 1, &ksi);
1525 PGRP_UNLOCK(tp->t_pgrp);
1533 if (tp->t_flags & TF_ASYNC && tp->t_sigio != NULL)
1534 pgsigio(&tp->t_sigio, SIGIO, (tp->t_session != NULL));
1536 if (
flags & FWRITE) {
1537 cv_broadcast(&tp->t_outwait);
1539 KNOTE_LOCKED(&tp->t_outpoll.si_note, 0);
1541 if (
flags & FREAD) {
1542 cv_broadcast(&tp->t_inwait);
1544 KNOTE_LOCKED(&tp->t_inpoll.si_note, 0);
1552 int revokecnt = tp->t_revokecnt;
1554 tty_lock_assert(tp, MA_OWNED|MA_NOTRECURSED);
1555 MPASS(!tty_gone(tp));
1557 error = cv_wait_sig(cv, tp->t_mtx);
1564 if (tp->t_revokecnt != revokecnt)
1574 int revokecnt = tp->t_revokecnt;
1576 tty_lock_assert(tp, MA_OWNED|MA_NOTRECURSED);
1577 MPASS(!tty_gone(tp));
1579 error = cv_timedwait_sig(cv, tp->t_mtx,
hz);
1586 if (tp->t_revokecnt != revokecnt)
1596 if (
flags & FWRITE) {
1597 tp->t_flags &= ~TF_HIWAT_OUT;
1600 if (!tty_gone(tp)) {
1601 ttydevsw_outwakeup(tp);
1602 ttydevsw_pktnotify(tp, TIOCPKT_FLUSHWRITE);
1605 if (
flags & FREAD) {
1609 if (!tty_gone(tp)) {
1610 ttydevsw_inwakeup(tp);
1611 ttydevsw_pktnotify(tp, TIOCPKT_FLUSHREAD);
1620 if (memcmp(&tp->t_winsize, wsz,
sizeof(*wsz)) == 0)
1622 tp->t_winsize = *wsz;
1639 ttydevsw_modem(tp, SER_DTR, 0);
1642 ttydevsw_modem(tp, 0, SER_DTR);
1645 int bits = *(
int *)
data;
1647 (bits & (TIOCM_DTR | TIOCM_RTS)) >> 1,
1648 ((~bits) & (TIOCM_DTR | TIOCM_RTS)) >> 1);
1652 int bits = *(
int *)
data;
1653 ttydevsw_modem(tp, (bits & (TIOCM_DTR | TIOCM_RTS)) >> 1, 0);
1657 int bits = *(
int *)
data;
1658 ttydevsw_modem(tp, 0, (bits & (TIOCM_DTR | TIOCM_RTS)) >> 1);
1662 *(
int *)
data = TIOCM_LE + (ttydevsw_modem(tp, 0, 0) << 1);
1667 tp->t_flags |= TF_ASYNC;
1669 tp->t_flags &= ~TF_ASYNC;
1675 *(
int *)
data = ttyinq_bytescanonicalized(&tp->t_inq);
1679 *(
int *)
data = ttyoutq_bytesused(&tp->t_outq);
1682 if (tp->t_session != NULL && !
tty_is_ctty(tp, td->td_proc))
1692 if (tp->t_session != NULL && !
tty_is_ctty(tp, td->td_proc))
1701 *(
struct termios*)
data = tp->t_termios;
1706 struct termios *t =
data;
1713 if (t->c_ispeed == 0)
1714 t->c_ispeed = t->c_ospeed;
1723 if (cmd == TIOCSETAW || cmd == TIOCSETAF) {
1727 if (cmd == TIOCSETAF)
1734 if ((t->c_cflag & CIGNORE) == 0 &&
1735 (tp->t_termios.c_cflag != t->c_cflag ||
1736 ((tp->t_termios.c_iflag ^ t->c_iflag) &
1737 (IXON|IXOFF|IXANY)) ||
1738 tp->t_termios.c_ispeed != t->c_ispeed ||
1739 tp->t_termios.c_ospeed != t->c_ospeed)) {
1740 error = ttydevsw_param(tp, t);
1746 tp->t_termios.c_cflag = t->c_cflag & ~CIGNORE;
1747 tp->t_termios.c_ispeed = t->c_ispeed;
1748 tp->t_termios.c_ospeed = t->c_ospeed;
1751 error = tty_watermarks(tp);
1757 tp->t_termios.c_iflag = t->c_iflag;
1758 tp->t_termios.c_oflag = t->c_oflag;
1759 tp->t_termios.c_lflag = t->c_lflag;
1760 memcpy(&tp->t_termios.c_cc, t->c_cc,
sizeof t->c_cc);
1764 if ((t->c_lflag & ICANON) == 0) {
1778 if (tp->t_termios.c_iflag & IXON &&
1779 tp->t_termios.c_cc[VSTOP] == CTRL(
'S') &&
1780 tp->t_termios.c_cc[VSTART] == CTRL(
'Q'))
1781 ttydevsw_pktnotify(tp, TIOCPKT_DOSTOP);
1783 ttydevsw_pktnotify(tp, TIOCPKT_NOSTOP);
1788 *(
int *)
data = TTYDISC;
1794 if (tp->t_pgrp != NULL)
1795 *(
int *)
data = tp->t_pgrp->pg_id;
1797 *(
int *)
data = NO_PID;
1803 MPASS(tp->t_session);
1804 *(
int *)
data = tp->t_session->s_sid;
1809 struct proc *p = td->td_proc;
1816 if (!SESS_LEADER(p)) {
1822 if (tp->t_session != NULL && tp->t_session == p->p_session) {
1828 if (p->p_session->s_ttyp != NULL ||
1829 (tp->t_session != NULL && tp->t_session->s_ttyvp != NULL &&
1830 tp->t_session->s_ttyvp->v_type != VBAD)) {
1847 tp->t_session = p->p_session;
1848 tp->t_session->s_ttyp = tp;
1852 tp->t_pgrp = p->p_pgrp;
1854 p->p_flag |= P_CONTROLT;
1873 if (pg == NULL || pg->pg_session != td->td_proc->p_session) {
1892 cv_broadcast(&tp->t_bgwait);
1899 flags = (FREAD|FWRITE);
1901 flags &= (FREAD|FWRITE);
1908 case TIOCGDRAINWAIT:
1909 *(
int *)
data = tp->t_drainwait;
1911 case TIOCSDRAINWAIT:
1914 tp->t_drainwait = *(
int *)
data;
1929 *(
struct winsize*)
data = tp->t_winsize;
1936 tp->t_flags |= TF_EXCLUDE;
1939 tp->t_flags &= ~TF_EXCLUDE;
1942 tp->t_flags |= TF_STOPPED;
1943 ttydevsw_pktnotify(tp, TIOCPKT_STOP);
1946 tp->t_flags &= ~TF_STOPPED;
1947 tp->t_termios.c_lflag &= ~FLUSHO;
1948 ttydevsw_outwakeup(tp);
1949 ttydevsw_pktnotify(tp, TIOCPKT_START);
1955 if ((fflag & FREAD) == 0 &&
priv_check(td, PRIV_TTY_STI))
1977 tty_assert_locked(tp);
1982 error = ttydevsw_ioctl(tp, cmd,
data, td);
1983 if (error == ENOIOCTL)
1994 return (dev2udev(tp->t_dev));
2004 return (ttyoutq_bytesleft(&tp->t_outq) >= 256);
2011 if ((tp->t_flags & TF_HIWAT_IN) == 0 &&
2012 tp->t_termios.c_iflag & IXOFF &&
2013 tp->t_termios.c_cc[VSTOP] != _POSIX_VDISABLE) {
2019 &tp->t_termios.c_cc[VSTOP], 1) == 0)
2020 tp->t_flags |= TF_HIWAT_IN;
2023 tp->t_flags |= TF_HIWAT_IN;
2031 if (tp->t_flags & TF_HIWAT_IN &&
2032 tp->t_termios.c_iflag & IXOFF &&
2033 tp->t_termios.c_cc[VSTART] != _POSIX_VDISABLE) {
2039 &tp->t_termios.c_cc[VSTART], 1) == 0)
2040 tp->t_flags &= ~TF_HIWAT_IN;
2043 tp->t_flags &= ~TF_HIWAT_IN;
2047 ttydevsw_inwakeup(tp);
2058 if (ttyhook_rint_bypass(tp, &c, 1) != 1)
2072 struct filedesc *fdp;
2073 cap_rights_t rights;
2083 FILEDESC_SLOCK(fdp);
2086 if (error == 0 && !fhold(fp))
2088 FILEDESC_SUNLOCK(fdp);
2102 if (fp->f_type != DTYPE_VNODE || fp->f_vnode->v_type != VCHR) {
2113 if (dev != fp->f_data) {
2126 MPASS((tp->t_hook == NULL) == ((tp->t_flags & TF_HOOK) == 0));
2127 if (tp->t_flags & TF_HOOK)
2130 tp->t_flags |= TF_HOOK;
2132 tp->t_hooksoftc = softc;
2140 if (!ttyhook_hashook(tp, rint) && ttyhook_hashook(tp, rint_bypass))
2143done3: tty_unlock(tp);
2145done1: fdrop(fp, curthread);
2153 tty_assert_locked(tp);
2154 MPASS(tp->t_flags & TF_HOOK);
2157 tp->t_flags &= ~TF_HOOK;
2177 if (dev_console_filename == NULL)
2181 sx_slock(&tty_list_sx);
2182 TAILQ_FOREACH(tp, &tty_list, t_list) {
2183 if (strcmp(dev_console_filename, tty_devname(tp)) == 0) {
2184 dev_console->si_drv1 = tp;
2188 sx_sunlock(&tty_list_sx);
2191 if (dev_console->si_drv1 == NULL)
2212 .d_version = D_VERSION,
2221 .d_name =
"ttyconsdev",
2230 NULL, UID_ROOT, GID_WHEEL, 0600,
"console");
2239 dev_console_filename =
name;
2249#include <ddb/db_sym.h>
2251static const struct {
2256 { TF_NOPREFIX,
'N' },
2258 { TF_INITLOCK,
'I' },
2259 { TF_CALLOUT,
'C' },
2263 { TF_OPENED_IN,
'i' },
2264 { TF_OPENED_OUT,
'o' },
2265 { TF_OPENED_CONS,
'c' },
2268 { TF_OPENCLOSE,
'B' },
2270 { TF_LITERAL,
'L' },
2274 { TF_HIWAT_IN,
'i' },
2275 { TF_HIWAT_OUT,
'o' },
2277 { TF_STOPPED,
'S' },
2278 { TF_EXCLUDE,
'X' },
2285 { TF_BUSY_IN,
'i' },
2286 { TF_BUSY_OUT,
'o' },
2291#define TTY_FLAG_BITS \
2292 "\20\1NOPREFIX\2INITLOCK\3CALLOUT\4OPENED_IN" \
2293 "\5OPENED_OUT\6OPENED_CONS\7GONE\10OPENCLOSE" \
2294 "\11ASYNC\12LITERAL\13HIWAT_IN\14HIWAT_OUT" \
2295 "\15STOPPED\16EXCLUDE\17BYPASS\20ZOMBIE" \
2296 "\21HOOK\22BUSY_IN\23BUSY_OUT"
2298#define DB_PRINTSYM(name, addr) \
2299 db_printf("%s " #name ": ", sep); \
2300 db_printsym((db_addr_t) addr, DB_STGY_ANY); \
2304_db_show_devsw(
const char *sep,
const struct ttydevsw *tsw)
2307 db_printf(
"%sdevsw: ", sep);
2308 db_printsym((db_addr_t)tsw, DB_STGY_ANY);
2309 db_printf(
" (%p)\n", tsw);
2310 DB_PRINTSYM(open, tsw->tsw_open);
2311 DB_PRINTSYM(close, tsw->tsw_close);
2312 DB_PRINTSYM(outwakeup, tsw->tsw_outwakeup);
2313 DB_PRINTSYM(inwakeup, tsw->tsw_inwakeup);
2314 DB_PRINTSYM(ioctl, tsw->tsw_ioctl);
2315 DB_PRINTSYM(param, tsw->tsw_param);
2316 DB_PRINTSYM(modem, tsw->tsw_modem);
2317 DB_PRINTSYM(mmap, tsw->tsw_mmap);
2318 DB_PRINTSYM(pktnotify, tsw->tsw_pktnotify);
2319 DB_PRINTSYM(
free, tsw->tsw_free);
2323_db_show_hooks(
const char *sep,
const struct ttyhook *th)
2326 db_printf(
"%shook: ", sep);
2327 db_printsym((db_addr_t)th, DB_STGY_ANY);
2328 db_printf(
" (%p)\n", th);
2331 DB_PRINTSYM(rint, th->th_rint);
2332 DB_PRINTSYM(rint_bypass, th->th_rint_bypass);
2333 DB_PRINTSYM(rint_done, th->th_rint_done);
2334 DB_PRINTSYM(rint_poll, th->th_rint_poll);
2335 DB_PRINTSYM(getc_inject, th->th_getc_inject);
2336 DB_PRINTSYM(getc_capture, th->th_getc_capture);
2337 DB_PRINTSYM(getc_poll, th->th_getc_poll);
2338 DB_PRINTSYM(close, th->th_close);
2342_db_show_termios(
const char *
name,
const struct termios *t)
2345 db_printf(
"%s: iflag 0x%x oflag 0x%x cflag 0x%x "
2346 "lflag 0x%x ispeed %u ospeed %u\n",
name,
2347 t->c_iflag, t->c_oflag, t->c_cflag, t->c_lflag,
2348 t->c_ispeed, t->c_ospeed);
2352DB_SHOW_COMMAND(tty, db_show_tty)
2357 db_printf(
"usage: show tty <addr>\n");
2360 tp = (
struct tty *)
addr;
2362 db_printf(
"%p: %s\n", tp, tty_devname(tp));
2363 db_printf(
"\tmtx: %p\n", tp->t_mtx);
2364 db_printf(
"\tflags: 0x%b\n", tp->t_flags, TTY_FLAG_BITS);
2365 db_printf(
"\trevokecnt: %u\n", tp->t_revokecnt);
2368 db_printf(
"\tinq: %p begin %u linestart %u reprint %u end %u "
2369 "nblocks %u quota %u\n", &tp->t_inq, tp->t_inq.ti_begin,
2370 tp->t_inq.ti_linestart, tp->t_inq.ti_reprint, tp->t_inq.ti_end,
2371 tp->t_inq.ti_nblocks, tp->t_inq.ti_quota);
2372 db_printf(
"\toutq: %p begin %u end %u nblocks %u quota %u\n",
2373 &tp->t_outq, tp->t_outq.to_begin, tp->t_outq.to_end,
2374 tp->t_outq.to_nblocks, tp->t_outq.to_quota);
2375 db_printf(
"\tinlow: %zu\n", tp->t_inlow);
2376 db_printf(
"\toutlow: %zu\n", tp->t_outlow);
2377 _db_show_termios(
"\ttermios", &tp->t_termios);
2378 db_printf(
"\twinsize: row %u col %u xpixel %u ypixel %u\n",
2379 tp->t_winsize.ws_row, tp->t_winsize.ws_col,
2380 tp->t_winsize.ws_xpixel, tp->t_winsize.ws_ypixel);
2381 db_printf(
"\tcolumn: %u\n", tp->t_column);
2382 db_printf(
"\twritepos: %u\n", tp->t_writepos);
2383 db_printf(
"\tcompatflags: 0x%x\n", tp->t_compatflags);
2386 _db_show_termios(
"\ttermios_init_in", &tp->t_termios_init_in);
2387 _db_show_termios(
"\ttermios_init_out", &tp->t_termios_init_out);
2388 _db_show_termios(
"\ttermios_lock_in", &tp->t_termios_lock_in);
2389 _db_show_termios(
"\ttermios_lock_out", &tp->t_termios_lock_out);
2392 _db_show_devsw(
"\t", tp->t_devsw);
2393 _db_show_hooks(
"\t", tp->t_hook);
2396 db_printf(
"\tpgrp: %p gid %d\n", tp->t_pgrp,
2397 tp->t_pgrp ? tp->t_pgrp->pg_id : 0);
2398 db_printf(
"\tsession: %p", tp->t_session);
2399 if (tp->t_session != NULL)
2400 db_printf(
" count %u leader %p tty %p sid %d login %s",
2401 tp->t_session->s_count, tp->t_session->s_leader,
2402 tp->t_session->s_ttyp, tp->t_session->s_sid,
2403 tp->t_session->s_login);
2405 db_printf(
"\tsessioncnt: %u\n", tp->t_sessioncnt);
2406 db_printf(
"\tdevswsoftc: %p\n", tp->t_devswsoftc);
2407 db_printf(
"\thooksoftc: %p\n", tp->t_hooksoftc);
2408 db_printf(
"\tdev: %p\n", tp->t_dev);
2412DB_SHOW_ALL_COMMAND(ttys, db_show_all_ttys)
2420#if defined(__LP64__)
2423 db_printf(
" LINE INQ CAN LIN LOW OUTQ USE LOW "
2424 "COL SESS PGID STATE\n");
2426 TAILQ_FOREACH(tp, &tty_list, t_list) {
2427 isiz = tp->t_inq.ti_nblocks * TTYINQ_DATASIZE;
2428 osiz = tp->t_outq.to_nblocks * TTYOUTQ_DATASIZE;
2430 db_printf(
"%p %10s %5zu %4u %4u %4zu %5zu %4u %4zu %5u %5d "
2431 "%5d ", tp, tty_devname(tp), isiz,
2432 tp->t_inq.ti_linestart - tp->t_inq.ti_begin,
2433 tp->t_inq.ti_end - tp->t_inq.ti_linestart,
2434 isiz - tp->t_inlow, osiz,
2435 tp->t_outq.to_end - tp->t_outq.to_begin,
2436 osiz - tp->t_outlow, MIN(tp->t_column, 99999),
2437 tp->t_session ? tp->t_session->s_sid : 0,
2438 tp->t_pgrp ? tp->t_pgrp->pg_id : 0);
2441 for (i = j = 0; ttystates[i].flag; i++)
2442 if (tp->t_flags & ttystates[i].flag) {
2443 db_printf(
"%c", ttystates[i].val);
SYSCTL_INT(ASLR_NODE_OID, OID_AUTO, enable, CTLFLAG_RWTUN, &__elfN(aslr_enabled), 0, ": enable address map randomization")
SX_SYSINIT(acct, &acct_sx, "acct_sx")
void cv_init(struct cv *cvp, const char *desc)
void cv_destroy(struct cv *cvp)
void cv_signal(struct cv *cvp)
void destroy_dev(struct cdev *dev)
struct cdev * make_dev_credf(int flags, struct cdevsw *devsw, int unit, struct ucred *cr, uid_t uid, gid_t gid, int mode, const char *fmt,...)
int destroy_dev_sched_cb(struct cdev *dev, void(*cb)(void *), void *arg)
int make_dev_s(struct make_dev_args *args, struct cdev **dres, const char *fmt,...)
void dev_depends(struct cdev *pdev, struct cdev *cdev)
void dev_relthread(struct cdev *dev, int ref)
struct cdevsw * devvn_refthread(struct vnode *vp, struct cdev **devp, int *ref)
int constty_clear(struct tty *tp)
int constty_set(struct tty *tp)
int fget_cap_noref(struct filedesc *fdp, int fd, cap_rights_t *needrightsp, struct file **fpp, struct filecaps *havecapsp)
int fsetown(pid_t pgid, struct sigio **sigiop)
void funsetown(struct sigio **sigiop)
pid_t fgetown(struct sigio **sigiop)
struct fileops badfileops
void knlist_remove(struct knlist *knl, struct knote *kn, int islocked)
void knlist_add(struct knlist *knl, struct knote *kn, int islocked)
void knlist_destroy(struct knlist *knl)
void knote(struct knlist *list, long hint, int lockflags)
void knlist_init_mtx(struct knlist *knl, struct mtx *lock)
void *() malloc(size_t size, struct malloc_type *mtp, int flags)
void free(void *addr, struct malloc_type *mtp)
int priv_check(struct thread *td, int priv)
struct sx __exclusive_cache_line proctree_lock
struct pgrp * pgfind(pid_t pgid)
void panic(const char *fmt,...)
void pgsigio(struct sigio **sigiop, int sig, int checkctty)
void pgsignal(struct pgrp *pgrp, int sig, int checkctty, ksiginfo_t *ksi)
void kern_psignal(struct proc *p, int sig)
int vsnrprintf(char *str, size_t size, int radix, const char *format, va_list ap)
void log_console(struct uio *uio)
void seldrain(struct selinfo *sip)
void selrecord(struct thread *selector, struct selinfo *sip)
void selwakeup(struct selinfo *sip)
static void tty_kqops_read_detach(struct knote *kn)
void tty_hiwat_in_block(struct tty *tp)
static struct filterops tty_kqops_read
static void tty_dealloc(void *arg)
static int ttydev_close(struct cdev *dev, int fflag, int devtype __unused, struct thread *td __unused)
static struct cdevsw ttyconsdev_cdevsw
static int tty_drop_ctty(struct tty *tp, struct proc *p)
int tty_wait(struct tty *tp, struct cv *cv)
static void ttydevsw_deffree(void *softc __unused)
static int ttyconsdev_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
int tty_timedwait(struct tty *tp, struct cv *cv, int hz)
void ttyhook_unregister(struct tty *tp)
static struct cdevsw ttyil_cdevsw
static int tty_kqops_read_event(struct knote *kn, long hint __unused)
static int ttyil_close(struct cdev *dev __unused, int flag __unused, int mode __unused, struct thread *td __unused)
dev_t tty_udev(struct tty *tp)
int ttyhook_register(struct tty **rtp, struct proc *p, int fd, struct ttyhook *th, void *softc)
int tty_checkoutq(struct tty *tp)
static int ttyconsdev_write(struct cdev *dev, struct uio *uio, int ioflag)
static __inline int ttydev_enter(struct tty *tp)
static int ttydev_poll(struct cdev *dev, int events, struct thread *td)
static int ttydevsw_defmmap(struct tty *tp __unused, vm_ooffset_t offset __unused, vm_paddr_t *paddr __unused, int nprot __unused, vm_memattr_t *memattr __unused)
static int ttydev_open(struct cdev *dev, int oflags, int devtype __unused, struct thread *td)
static int tty_kqops_write_event(struct knote *kn, long hint __unused)
struct tty * tty_alloc_mutex(struct ttydevsw *tsw, void *sc, struct mtx *mutex)
static struct filterops tty_kqops_write
static __inline int tty_is_ctty(struct tty *tp, struct proc *p)
static int tty_generic_ioctl(struct tty *tp, u_long cmd, void *data, int fflag, struct thread *td)
int tty_wait_background(struct tty *tp, struct thread *td, int sig)
static int ttydev_read(struct cdev *dev, struct uio *uio, int ioflag)
static void ttydevsw_defoutwakeup(struct tty *tp __unused)
static void tty_init_termios(struct tty *tp)
int tty_ioctl(struct tty *tp, u_long cmd, void *data, int fflag, struct thread *td)
static void ttyconsdev_init(void *unused __unused)
void tty_flush(struct tty *tp, int flags)
void tty_rel_sess(struct tty *tp, struct session *sess)
static bool ttydevsw_defbusy(struct tty *tp __unused)
static int sysctl_kern_ttys(SYSCTL_HANDLER_ARGS)
static void ttydev_leave(struct tty *tp)
static void tty_to_xtty(struct tty *tp, struct xtty *xt)
void tty_signal_pgrp(struct tty *tp, int sig)
static int ttyil_rdwr(struct cdev *dev __unused, struct uio *uio __unused, int ioflag __unused)
#define TTY_CALLOUT(tp, d)
SYSCTL_PROC(_kern, OID_AUTO, ttys, CTLTYPE_OPAQUE|CTLFLAG_RD|CTLFLAG_MPSAFE, 0, 0, sysctl_kern_ttys, "S,xtty", "List of TTYs")
static int ttydevsw_defopen(struct tty *tp __unused)
static void ttydevsw_defpktnotify(struct tty *tp __unused, char event __unused)
static int ttyil_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
void tty_set_winsize(struct tty *tp, const struct winsize *wsz)
void tty_signal_sessleader(struct tty *tp, int sig)
static void ttydevsw_definwakeup(struct tty *tp __unused)
static int tty_drain(struct tty *tp, int leaving)
static MALLOC_DEFINE(M_TTY, "tty", "tty device")
void tty_rel_pgrp(struct tty *tp, struct pgrp *pg)
void tty_rel_gone(struct tty *tp)
static int ttydevsw_defparam(struct tty *tp __unused, struct termios *t)
static int ttydev_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr, int nprot, vm_memattr_t *memattr)
void tty_init_console(struct tty *tp, speed_t s)
void tty_hiwat_in_unblock(struct tty *tp)
static int ttydev_kqfilter(struct cdev *dev, struct knote *kn)
static void ttydevsw_defclose(struct tty *tp __unused)
static struct cdevsw ttydev_cdevsw
void ttyconsdev_select(const char *name)
static void tty_kqops_write_detach(struct knote *kn)
int tty_makedevf(struct tty *tp, struct ucred *cred, int flags, const char *fmt,...)
struct tty * tty_alloc(struct ttydevsw *tsw, void *sc)
static int ttydev_write(struct cdev *dev, struct uio *uio, int ioflag)
void tty_wakeup(struct tty *tp, int flags)
static int ttydevsw_defioctl(struct tty *tp __unused, u_long cmd __unused, caddr_t data __unused, struct thread *td __unused)
static int ttyil_open(struct cdev *dev, int oflags __unused, int devtype __unused, struct thread *td)
SYSINIT(tty, SI_SUB_DRIVERS, SI_ORDER_FIRST, ttyconsdev_init, NULL)
static int ttydev_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
static int ttyhook_defrint(struct tty *tp, char c, int flags)
static int ttydevsw_defmodem(struct tty *tp __unused, int sigon __unused, int sigoff __unused)
static void tty_rel_free(struct tty *tp)
static int ttydevsw_defcioctl(struct tty *tp __unused, int unit __unused, u_long cmd __unused, caddr_t data __unused, struct thread *td __unused)
int tty_ioctl_compat(struct tty *tp, u_long com, caddr_t data, int fflag, struct thread *td)
void tty_info(struct tty *tp)
void ttyinq_canonicalize(struct ttyinq *ti)
int ttyinq_setsize(struct ttyinq *ti, struct tty *tp, size_t size)
void ttyinq_free(struct ttyinq *ti)
void ttyinq_flush(struct ttyinq *ti)
int ttyoutq_write_nofrag(struct ttyoutq *to, const void *buf, size_t nbytes)
int ttyoutq_setsize(struct ttyoutq *to, struct tty *tp, size_t size)
void ttyoutq_free(struct ttyoutq *to)
void ttyoutq_flush(struct ttyoutq *to)
void ttydisc_close(struct tty *tp)
void ttydisc_modem(struct tty *tp, int open)
int ttydisc_rint(struct tty *tp, char c, int flags)
void ttydisc_optimize(struct tty *tp)
void ttydisc_open(struct tty *tp)
int ttydisc_read(struct tty *tp, struct uio *uio, int ioflag)
void ttydisc_rint_done(struct tty *tp)
int ttydisc_write(struct tty *tp, struct uio *uio, int ioflag)