#ifdef NeXT
#define NSNP 0
#else
#include "snp.h"
#include "opt_uconsole.h"
#endif
#include <sys/param.h>
#define TTYDEFCHARS 1
#include <sys/systm.h>
#undef TTYDEFCHARS
#include <sys/ioctl.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/conf.h>
#include <sys/dkstat.h>
#include <sys/uio.h>
#include <sys/kernel.h>
#include <sys/vnode.h>
#include <sys/syslog.h>
#include <sys/signalvar.h>
#ifndef NeXT
#include <sys/resourcevar.h>
#endif
#include <sys/malloc.h>
#if NSNP > 0
#include <sys/snoop.h>
#endif
#ifndef NeXT
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_prot.h>
#include <vm/lock.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#else
#include <dev/kmreg_com.h>
#include <machine/cons.h>
#include <machine/spl.h>
#if 0
#include <machdep/machine/pmap.h>
#endif
#endif
#ifndef NeXT
static int proc_compare __P((struct proc *p1, struct proc *p2));
#endif
static int ttnread __P((struct tty *tp));
static void ttyecho __P((int c, struct tty *tp));
static int ttyoutput __P((int c, register struct tty *tp));
static void ttypend __P((struct tty *tp));
static void ttyretype __P((struct tty *tp));
static void ttyrub __P((int c, struct tty *tp));
static void ttyrubo __P((struct tty *tp, int cnt));
static void ttystop __P((struct tty *tp, int rw));
static void ttyunblock __P((struct tty *tp));
static int ttywflush __P((struct tty *tp));
#define E 0x00
#define O 0x80
#define PARITY(c) (char_type[c] & O)
#define ALPHA 0x40
#define ISALPHA(c) (char_type[(c) & TTY_CHARMASK] & ALPHA)
#define CCLASSMASK 0x3f
#define CCLASS(c) (char_type[c] & CCLASSMASK)
#define BS BACKSPACE
#define CC CONTROL
#define CR RETURN
#define NA ORDINARY | ALPHA
#define NL NEWLINE
#define NO ORDINARY
#define TB TAB
#define VT VTAB
static u_char const char_type[] = {
E|CC, O|CC, O|CC, E|CC, O|CC, E|CC, E|CC, O|CC,
O|BS, E|TB, E|NL, O|CC, E|VT, O|CR, O|CC, E|CC,
O|CC, E|CC, E|CC, O|CC, E|CC, O|CC, O|CC, E|CC,
E|CC, O|CC, O|CC, E|CC, O|CC, E|CC, E|CC, O|CC,
O|NO, E|NO, E|NO, O|NO, E|NO, O|NO, O|NO, E|NO,
E|NO, O|NO, O|NO, E|NO, O|NO, E|NO, E|NO, O|NO,
E|NA, O|NA, O|NA, E|NA, O|NA, E|NA, E|NA, O|NA,
O|NA, E|NA, E|NO, O|NO, E|NO, O|NO, O|NO, E|NO,
O|NO, E|NA, E|NA, O|NA, E|NA, O|NA, O|NA, E|NA,
E|NA, O|NA, O|NA, E|NA, O|NA, E|NA, E|NA, O|NA,
E|NA, O|NA, O|NA, E|NA, O|NA, E|NA, E|NA, O|NA,
O|NA, E|NA, E|NA, O|NO, E|NO, O|NO, O|NO, O|NA,
E|NO, O|NA, O|NA, E|NA, O|NA, E|NA, E|NA, O|NA,
O|NA, E|NA, E|NA, O|NA, E|NA, O|NA, O|NA, E|NA,
O|NA, E|NA, E|NA, O|NA, E|NA, O|NA, O|NA, E|NA,
E|NA, O|NA, O|NA, E|NO, O|NO, E|NO, E|NO, O|CC,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
NA, NA, NA, NA, NA, NA, NA, NA,
};
#undef BS
#undef CC
#undef CR
#undef NA
#undef NL
#undef NO
#undef TB
#undef VT
#define SET(t, f) (t) |= (f)
#define CLR(t, f) (t) &= ~(f)
#define ISSET(t, f) ((t) & (f))
#define I_HIGH_WATER (TTYHOG - 2 * 256)
#define I_LOW_WATER ((TTYHOG - 2 * 256) * 7 / 8)
#undef MAX_INPUT
#define MAX_INPUT TTYHOG
int
ttyopen(device, tp)
dev_t device;
register struct tty *tp;
{
int s;
s = spltty();
tp->t_dev = device;
if (!ISSET(tp->t_state, TS_ISOPEN)) {
SET(tp->t_state, TS_ISOPEN);
if (ISSET(tp->t_cflag, CLOCAL)) {
SET(tp->t_state, TS_CONNECTED); }
bzero(&tp->t_winsize, sizeof(tp->t_winsize));
}
#ifndef NeXT
clist_alloc_cblocks(&tp->t_canq, TTYHOG, 512);
clist_alloc_cblocks(&tp->t_outq, TTMAXHIWAT + OBUFSIZ + 100,
TTMAXHIWAT + OBUFSIZ + 100);
clist_alloc_cblocks(&tp->t_rawq, TTYHOG, TTYHOG);
#endif
splx(s);
return (0);
}
int
ttyclose(tp)
register struct tty *tp;
{
int s;
s = spltty();
if (constty == tp) {
constty = NULL;
splx(s);
spltty();
#ifdef NeXT
(*cdevsw[major(tp->t_dev)].d_ioctl)
(tp->t_dev, KMIOCDISABLCONS, NULL, 0, current_proc());
#endif
}
ttyflush(tp, FREAD | FWRITE);
#ifndef NeXT
clist_free_cblocks(&tp->t_canq);
clist_free_cblocks(&tp->t_outq);
clist_free_cblocks(&tp->t_rawq);
#endif
#if NSNP > 0
if (ISSET(tp->t_state, TS_SNOOP) && tp->t_sc != NULL)
snpdown((struct snoop *)tp->t_sc);
#endif
tp->t_gen++;
tp->t_line = TTYDISC;
tp->t_pgrp = NULL;
tp->t_session = NULL;
tp->t_state = 0;
#if NeXT
selthreadclear(&tp->t_wsel);
selthreadclear(&tp->t_rsel);
#endif
splx(s);
return (0);
}
#define FLUSHQ(q) { \
if ((q)->c_cc) \
ndflush(q, (q)->c_cc); \
}
#define TTBREAKC(c, lflag) \
((c) == '\n' || (((c) == cc[VEOF] || \
(c) == cc[VEOL] || ((c) == cc[VEOL2] && lflag & IEXTEN)) && \
(c) != _POSIX_VDISABLE))
int
ttyinput(c, tp)
register int c;
register struct tty *tp;
{
register tcflag_t iflag, lflag;
register cc_t *cc;
int i, err, retval;
boolean_t funnel_state;
funnel_state = thread_funnel_set(kernel_flock, TRUE);
lflag = tp->t_lflag;
if (ISSET(lflag, PENDIN))
ttypend(tp);
if (ISSET(lflag, ICANON)) {
++tk_cancc;
++tp->t_cancc;
} else {
++tk_rawcc;
++tp->t_rawcc;
}
++tk_nin;
iflag = tp->t_iflag;
if (tp->t_rawq.c_cc + tp->t_canq.c_cc > I_HIGH_WATER - 3 &&
(!ISSET(lflag, ICANON) || tp->t_canq.c_cc != 0) &&
(ISSET(tp->t_cflag, CRTS_IFLOW) || ISSET(iflag, IXOFF)) &&
!ISSET(tp->t_state, TS_TBLOCK))
ttyblock(tp);
cc = tp->t_cc;
err = (ISSET(c, TTY_ERRORMASK));
if (err) {
CLR(c, TTY_ERRORMASK);
if (ISSET(err, TTY_BI)) {
if (ISSET(iflag, IGNBRK)) {
thread_funnel_set(kernel_flock, funnel_state);
return (0);
}
if (ISSET(iflag, BRKINT)) {
ttyflush(tp, FREAD | FWRITE);
pgsignal(tp->t_pgrp, SIGINT, 1);
goto endcase;
}
if (ISSET(iflag, PARMRK))
goto parmrk;
} else if ((ISSET(err, TTY_PE) && ISSET(iflag, INPCK))
|| ISSET(err, TTY_FE)) {
if (ISSET(iflag, IGNPAR)) {
thread_funnel_set(kernel_flock, funnel_state);
return (0);
}
else if (ISSET(iflag, PARMRK)) {
parmrk:
if (tp->t_rawq.c_cc + tp->t_canq.c_cc >
MAX_INPUT - 3)
goto input_overflow;
(void)putc(0377 | TTY_QUOTE, &tp->t_rawq);
(void)putc(0 | TTY_QUOTE, &tp->t_rawq);
(void)putc(c | TTY_QUOTE, &tp->t_rawq);
goto endcase;
} else
c = 0;
}
}
if (!ISSET(tp->t_state, TS_TYPEN) && ISSET(iflag, ISTRIP))
CLR(c, 0x80);
if (!ISSET(lflag, EXTPROC)) {
if (ISSET(tp->t_state, TS_LNCH)) {
SET(c, TTY_QUOTE);
CLR(tp->t_state, TS_LNCH);
}
if (ISSET(lflag, IEXTEN)) {
if (CCEQ(cc[VLNEXT], c)) {
if (ISSET(lflag, ECHO)) {
if (ISSET(lflag, ECHOE)) {
(void)ttyoutput('^', tp);
(void)ttyoutput('\b', tp);
} else
ttyecho(c, tp);
}
SET(tp->t_state, TS_LNCH);
goto endcase;
}
if (CCEQ(cc[VDISCARD], c)) {
if (ISSET(lflag, FLUSHO))
CLR(tp->t_lflag, FLUSHO);
else {
ttyflush(tp, FWRITE);
ttyecho(c, tp);
if (tp->t_rawq.c_cc + tp->t_canq.c_cc)
ttyretype(tp);
SET(tp->t_lflag, FLUSHO);
}
goto startoutput;
}
}
if (ISSET(lflag, ISIG)) {
if (CCEQ(cc[VINTR], c) || CCEQ(cc[VQUIT], c)) {
if (!ISSET(lflag, NOFLSH))
ttyflush(tp, FREAD | FWRITE);
ttyecho(c, tp);
pgsignal(tp->t_pgrp,
CCEQ(cc[VINTR], c) ? SIGINT : SIGQUIT, 1);
goto endcase;
}
if (CCEQ(cc[VSUSP], c)) {
if (!ISSET(lflag, NOFLSH))
ttyflush(tp, FREAD);
ttyecho(c, tp);
pgsignal(tp->t_pgrp, SIGTSTP, 1);
goto endcase;
}
}
if (ISSET(iflag, IXON)) {
if (CCEQ(cc[VSTOP], c)) {
if (!ISSET(tp->t_state, TS_TTSTOP)) {
SET(tp->t_state, TS_TTSTOP);
ttystop(tp, 0);
thread_funnel_set(kernel_flock, funnel_state);
return (0);
}
if (!CCEQ(cc[VSTART], c)) {
thread_funnel_set(kernel_flock, funnel_state);
return (0);
}
goto endcase;
}
if (CCEQ(cc[VSTART], c))
goto restartoutput;
}
if (c == '\r') {
if (ISSET(iflag, IGNCR)) {
thread_funnel_set(kernel_flock, funnel_state);
return (0);
}
else if (ISSET(iflag, ICRNL))
c = '\n';
} else if (c == '\n' && ISSET(iflag, INLCR))
c = '\r';
}
if (!ISSET(tp->t_lflag, EXTPROC) && ISSET(lflag, ICANON)) {
if (CCEQ(cc[VERASE], c)) {
if (tp->t_rawq.c_cc)
ttyrub(unputc(&tp->t_rawq), tp);
goto endcase;
}
if (CCEQ(cc[VKILL], c)) {
if (ISSET(lflag, ECHOKE) &&
tp->t_rawq.c_cc == tp->t_rocount &&
!ISSET(lflag, ECHOPRT))
while (tp->t_rawq.c_cc)
ttyrub(unputc(&tp->t_rawq), tp);
else {
ttyecho(c, tp);
if (ISSET(lflag, ECHOK) ||
ISSET(lflag, ECHOKE))
ttyecho('\n', tp);
FLUSHQ(&tp->t_rawq);
tp->t_rocount = 0;
}
CLR(tp->t_state, TS_LOCAL);
goto endcase;
}
if (CCEQ(cc[VWERASE], c) && ISSET(lflag, IEXTEN)) {
int ctype;
while ((c = unputc(&tp->t_rawq)) == ' ' || c == '\t')
ttyrub(c, tp);
if (c == -1)
goto endcase;
ttyrub(c, tp);
c = unputc(&tp->t_rawq);
if (c == -1)
goto endcase;
if (c == ' ' || c == '\t') {
(void)putc(c, &tp->t_rawq);
goto endcase;
}
ctype = ISALPHA(c);
do {
ttyrub(c, tp);
c = unputc(&tp->t_rawq);
if (c == -1)
goto endcase;
} while (c != ' ' && c != '\t' &&
(!ISSET(lflag, ALTWERASE) || ISALPHA(c) == ctype));
(void)putc(c, &tp->t_rawq);
goto endcase;
}
if (CCEQ(cc[VREPRINT], c) && ISSET(lflag, IEXTEN)) {
ttyretype(tp);
goto endcase;
}
if (CCEQ(cc[VSTATUS], c) && ISSET(lflag, IEXTEN)) {
if (ISSET(lflag, ISIG))
pgsignal(tp->t_pgrp, SIGINFO, 1);
if (!ISSET(lflag, NOKERNINFO))
ttyinfo(tp);
goto endcase;
}
}
if (tp->t_rawq.c_cc + tp->t_canq.c_cc >= MAX_INPUT) {
input_overflow:
if (ISSET(iflag, IMAXBEL)) {
if (tp->t_outq.c_cc < tp->t_hiwat)
(void)ttyoutput(CTRL('g'), tp);
}
goto endcase;
}
if ( c == 0377 && ISSET(iflag, PARMRK) && !ISSET(iflag, ISTRIP)
&& ISSET(iflag, IGNBRK|IGNPAR) != (IGNBRK|IGNPAR))
(void)putc(0377 | TTY_QUOTE, &tp->t_rawq);
if (putc(c, &tp->t_rawq) >= 0) {
if (!ISSET(lflag, ICANON)) {
ttwakeup(tp);
ttyecho(c, tp);
goto endcase;
}
if (TTBREAKC(c, lflag)) {
tp->t_rocount = 0;
catq(&tp->t_rawq, &tp->t_canq);
ttwakeup(tp);
} else if (tp->t_rocount++ == 0)
tp->t_rocol = tp->t_column;
if (ISSET(tp->t_state, TS_ERASE)) {
CLR(tp->t_state, TS_ERASE);
(void)ttyoutput('/', tp);
}
i = tp->t_column;
ttyecho(c, tp);
if (CCEQ(cc[VEOF], c) && ISSET(lflag, ECHO)) {
i = min(2, tp->t_column - i);
while (i > 0) {
(void)ttyoutput('\b', tp);
i--;
}
}
}
endcase:
if (ISSET(tp->t_state, TS_TTSTOP) &&
!ISSET(iflag, IXANY) && cc[VSTART] != cc[VSTOP]) {
thread_funnel_set(kernel_flock, funnel_state);
return (0);
}
restartoutput:
CLR(tp->t_lflag, FLUSHO);
CLR(tp->t_state, TS_TTSTOP);
startoutput:
retval = ttstart(tp);
thread_funnel_set(kernel_flock, funnel_state);
return (retval);
}
static int
ttyoutput(c, tp)
register int c;
register struct tty *tp;
{
register tcflag_t oflag;
register int col, s;
oflag = tp->t_oflag;
if (!ISSET(oflag, OPOST)) {
if (ISSET(tp->t_lflag, FLUSHO))
return (-1);
if (putc(c, &tp->t_outq))
return (c);
tk_nout++;
tp->t_outcc++;
return (-1);
}
CLR(c, ~TTY_CHARMASK);
if (c == '\t' &&
ISSET(oflag, OXTABS) && !ISSET(tp->t_lflag, EXTPROC)) {
c = 8 - (tp->t_column & 7);
if (!ISSET(tp->t_lflag, FLUSHO)) {
s = spltty();
c -= b_to_q(" ", c, &tp->t_outq);
tk_nout += c;
tp->t_outcc += c;
splx(s);
}
tp->t_column += c;
return (c ? -1 : '\t');
}
if (c == CEOT && ISSET(oflag, ONOEOT))
return (-1);
if (c == '\n' && ISSET(tp->t_oflag, ONLCR)) {
tk_nout++;
tp->t_outcc++;
if (putc('\r', &tp->t_outq))
return (c);
}
tk_nout++;
tp->t_outcc++;
if (!ISSET(tp->t_lflag, FLUSHO) && putc(c, &tp->t_outq))
return (c);
col = tp->t_column;
switch (CCLASS(c)) {
case BACKSPACE:
if (col > 0)
--col;
break;
case CONTROL:
break;
case NEWLINE:
case RETURN:
col = 0;
break;
case ORDINARY:
++col;
break;
case TAB:
col = (col + 8) & ~7;
break;
}
tp->t_column = col;
return (-1);
}
int
#ifndef NeXT
ttioctl(tp, cmd, data, flag)
register struct tty *tp;
int cmd, flag;
void *data;
#else
ttioctl(tp, cmd, data, flag, p)
register struct tty *tp;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
#endif
{
#ifndef NeXT
register struct proc *p = curproc;
#endif
int s, error;
switch (cmd) {
case TIOCFLUSH:
case TIOCSETA:
case TIOCSETD:
case TIOCSETAF:
case TIOCSETAW:
#ifdef notdef
case TIOCSPGRP:
#endif
case TIOCSTAT:
case TIOCSTI:
case TIOCSWINSZ:
#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
case TIOCLBIC:
case TIOCLBIS:
case TIOCLSET:
case TIOCSETC:
case OTIOCSETD:
case TIOCSETN:
case TIOCSETP:
case TIOCSLTC:
#endif
while (isbackground(p, tp) &&
(p->p_flag & P_PPWAIT) == 0 &&
(p->p_sigignore & sigmask(SIGTTOU)) == 0 &&
(p->p_sigmask & sigmask(SIGTTOU)) == 0) {
if (p->p_pgrp->pg_jobc == 0)
return (EIO);
pgsignal(p->p_pgrp, SIGTTOU, 1);
error = ttysleep(tp, &lbolt, TTOPRI | PCATCH | PTTYBLOCK, "ttybg1",
0);
if (error)
return (error);
}
break;
}
switch (cmd) {
case FIOASYNC:
s = spltty();
if (*(int *)data)
SET(tp->t_state, TS_ASYNC);
else
CLR(tp->t_state, TS_ASYNC);
splx(s);
break;
case FIONBIO:
break;
case FIONREAD:
s = spltty();
*(int *)data = ttnread(tp);
splx(s);
break;
case TIOCEXCL:
s = spltty();
SET(tp->t_state, TS_XCLUDE);
splx(s);
break;
case TIOCFLUSH: {
register int flags = *(int *)data;
if (flags == 0)
flags = FREAD | FWRITE;
else
flags &= FREAD | FWRITE;
ttyflush(tp, flags);
break;
}
#ifdef NeXT
case TIOCSCONS: {
int bogusData = 1;
data = (caddr_t) &bogusData;
}
#endif
case TIOCCONS: {
if (*(int *)data) {
if (constty && constty != tp &&
ISSET(constty->t_state, TS_CONNECTED)) {
return (EBUSY);
}
#if defined(NeXT) || !defined(UCONSOLE)
if ( (error = suser(p->p_ucred, &p->p_acflag)) )
return (error);
#endif
constty = tp;
} else if (tp == constty) {
constty = NULL;
}
#ifdef NeXT
if (constty) {
(*cdevsw[major(cons.t_dev)].d_ioctl)
(cons.t_dev, KMIOCDISABLCONS, NULL, 0, p);
} else {
(*cdevsw[major(tp->t_dev)].d_ioctl)
(tp->t_dev, KMIOCDISABLCONS, NULL, 0, p);
}
#endif
break;
}
case TIOCDRAIN:
error = ttywait(tp);
if (error)
return (error);
break;
case TIOCGETA: {
struct termios *t = (struct termios *)data;
bcopy(&tp->t_termios, t, sizeof(struct termios));
break;
}
case TIOCGETD:
*(int *)data = tp->t_line;
break;
case TIOCGWINSZ:
*(struct winsize *)data = tp->t_winsize;
break;
case TIOCGPGRP:
if (!isctty(p, tp))
return (ENOTTY);
*(int *)data = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID;
break;
#ifdef TIOCHPCL
case TIOCHPCL:
s = spltty();
SET(tp->t_cflag, HUPCL);
splx(s);
break;
#endif
case TIOCNXCL:
s = spltty();
CLR(tp->t_state, TS_XCLUDE);
splx(s);
break;
case TIOCOUTQ:
*(int *)data = tp->t_outq.c_cc;
break;
case TIOCSETA:
case TIOCSETAW:
case TIOCSETAF: {
register struct termios *t = (struct termios *)data;
if (t->c_ispeed < 0 || t->c_ospeed < 0)
return (EINVAL);
s = spltty();
if (cmd == TIOCSETAW || cmd == TIOCSETAF) {
error = ttywait(tp);
if (error) {
splx(s);
return (error);
}
if (cmd == TIOCSETAF)
ttyflush(tp, FREAD);
}
if (!ISSET(t->c_cflag, CIGNORE)) {
if (tp->t_param && (error = (*tp->t_param)(tp, t))) {
splx(s);
return (error);
}
if (ISSET(t->c_cflag, CLOCAL) &&
!ISSET(tp->t_cflag, CLOCAL)) {
CLR(tp->t_state, TS_ZOMBIE);
wakeup(TSA_CARR_ON(tp));
ttwakeup(tp);
ttwwakeup(tp);
}
if ((ISSET(tp->t_state, TS_CARR_ON) ||
ISSET(t->c_cflag, CLOCAL)) &&
!ISSET(tp->t_state, TS_ZOMBIE))
SET(tp->t_state, TS_CONNECTED);
else
CLR(tp->t_state, TS_CONNECTED);
tp->t_cflag = t->c_cflag;
tp->t_ispeed = t->c_ispeed;
tp->t_ospeed = t->c_ospeed;
ttsetwater(tp);
}
if (ISSET(t->c_lflag, ICANON) != ISSET(tp->t_lflag, ICANON) &&
cmd != TIOCSETAF) {
if (ISSET(t->c_lflag, ICANON))
SET(tp->t_lflag, PENDIN);
else {
#ifndef NeXT
if (tp->t_canq.c_cbreserved > 0 &&
tp->t_rawq.c_cbreserved > 0) {
catq(&tp->t_rawq, &tp->t_canq);
catq(&tp->t_canq, &tp->t_rawq);
}
#else
if (tp->t_rawq.c_cs && tp->t_canq.c_cs) {
struct clist tq;
catq(&tp->t_rawq, &tp->t_canq);
tq = tp->t_rawq;
tp->t_rawq = tp->t_canq;
tp->t_canq = tq;
}
#endif
CLR(tp->t_lflag, PENDIN);
}
ttwakeup(tp);
}
tp->t_iflag = t->c_iflag;
tp->t_oflag = t->c_oflag;
if (ISSET(tp->t_lflag, EXTPROC))
SET(t->c_lflag, EXTPROC);
else
CLR(t->c_lflag, EXTPROC);
tp->t_lflag = t->c_lflag | ISSET(tp->t_lflag, PENDIN);
if (t->c_cc[VMIN] != tp->t_cc[VMIN] ||
t->c_cc[VTIME] != tp->t_cc[VTIME])
ttwakeup(tp);
bcopy(t->c_cc, tp->t_cc, sizeof(t->c_cc));
splx(s);
break;
}
case TIOCSETD: {
register int t = *(int *)data;
dev_t device = tp->t_dev;
extern int nlinesw;
if ((u_int)t >= nlinesw)
return (ENXIO);
if (t != tp->t_line) {
s = spltty();
(*linesw[tp->t_line].l_close)(tp, flag);
error = (*linesw[t].l_open)(device, tp);
if (error) {
(void)(*linesw[tp->t_line].l_open)(device, tp);
splx(s);
return (error);
}
tp->t_line = t;
splx(s);
}
break;
}
case TIOCSTART:
s = spltty();
if (ISSET(tp->t_state, TS_TTSTOP) ||
ISSET(tp->t_lflag, FLUSHO)) {
CLR(tp->t_lflag, FLUSHO);
CLR(tp->t_state, TS_TTSTOP);
ttstart(tp);
}
splx(s);
break;
case TIOCSTI:
if (p->p_ucred->cr_uid && (flag & FREAD) == 0)
return (EPERM);
if (p->p_ucred->cr_uid && !isctty(p, tp))
return (EACCES);
s = spltty();
(*linesw[tp->t_line].l_rint)(*(u_char *)data, tp);
splx(s);
break;
case TIOCSTOP:
s = spltty();
if (!ISSET(tp->t_state, TS_TTSTOP)) {
SET(tp->t_state, TS_TTSTOP);
ttystop(tp, 0);
}
splx(s);
break;
case TIOCSCTTY:
if (!SESS_LEADER(p) ||
((p->p_session->s_ttyvp || tp->t_session) &&
(tp->t_session != p->p_session)))
return (EPERM);
tp->t_session = p->p_session;
tp->t_pgrp = p->p_pgrp;
p->p_session->s_ttyp = tp;
p->p_flag |= P_CONTROLT;
break;
case TIOCSPGRP: {
register struct pgrp *pgrp = pgfind(*(int *)data);
if (!isctty(p, tp))
return (ENOTTY);
else if (pgrp == NULL || pgrp->pg_session != p->p_session)
return (EPERM);
tp->t_pgrp = pgrp;
break;
}
case TIOCSTAT:
s = spltty();
ttyinfo(tp);
splx(s);
break;
case TIOCSWINSZ:
if (bcmp((caddr_t)&tp->t_winsize, data,
sizeof (struct winsize))) {
tp->t_winsize = *(struct winsize *)data;
pgsignal(tp->t_pgrp, SIGWINCH, 1);
}
break;
case TIOCSDRAINWAIT:
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return (error);
tp->t_timeout = *(int *)data * hz;
wakeup(TSA_OCOMPLETE(tp));
wakeup(TSA_OLOWAT(tp));
break;
case TIOCGDRAINWAIT:
*(int *)data = tp->t_timeout / hz;
break;
default:
#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
#ifdef NeXT
return (ttcompat(tp, cmd, data, flag, p));
#else
return (ttcompat(tp, cmd, data, flag));
#endif
#else
return (-1);
#endif
}
return (0);
}
int
ttyselect(tp, rw, p)
struct tty *tp;
int rw;
struct proc *p;
{
int s;
if (tp == NULL)
return (ENXIO);
s = spltty();
switch (rw) {
case FREAD:
if (ttnread(tp) > 0 || ISSET(tp->t_state, TS_ZOMBIE))
goto win;
selrecord(p, &tp->t_rsel);
break;
case FWRITE:
if ((tp->t_outq.c_cc <= tp->t_lowat &&
ISSET(tp->t_state, TS_CONNECTED))
|| ISSET(tp->t_state, TS_ZOMBIE)) {
win: splx(s);
return (1);
}
selrecord(p, &tp->t_wsel);
break;
}
splx(s);
return (0);
}
int
ttselect(dev, rw, p)
dev_t dev;
int rw;
struct proc *p;
{
#ifndef NeXT
return ttyselect((*cdevsw[major(dev)]->d_devtotty)(dev), rw, p);
#else
return ttyselect(cdevsw[major(dev)].d_ttys[minor(dev)], rw, p);
#endif
}
static int
ttnread(tp)
struct tty *tp;
{
int nread;
if (ISSET(tp->t_lflag, PENDIN))
ttypend(tp);
nread = tp->t_canq.c_cc;
if (!ISSET(tp->t_lflag, ICANON)) {
nread += tp->t_rawq.c_cc;
if (nread < tp->t_cc[VMIN] && tp->t_cc[VTIME] == 0)
nread = 0;
}
return (nread);
}
int
ttywait(tp)
register struct tty *tp;
{
int error, s;
error = 0;
s = spltty();
while ((tp->t_outq.c_cc || ISSET(tp->t_state, TS_BUSY)) &&
ISSET(tp->t_state, TS_CONNECTED) && tp->t_oproc) {
(*tp->t_oproc)(tp);
if ((tp->t_outq.c_cc || ISSET(tp->t_state, TS_BUSY)) &&
ISSET(tp->t_state, TS_CONNECTED)) {
SET(tp->t_state, TS_SO_OCOMPLETE);
error = ttysleep(tp, TSA_OCOMPLETE(tp),
TTOPRI | PCATCH, "ttywai",
tp->t_timeout);
if (error) {
if (error == EWOULDBLOCK)
error = EIO;
break;
}
} else
break;
}
if (!error && (tp->t_outq.c_cc || ISSET(tp->t_state, TS_BUSY)))
error = EIO;
splx(s);
return (error);
}
static void
ttystop(tp, rw)
struct tty *tp;
int rw;
{
#ifdef sun4c
(*tp->t_stop)(tp, rw);
#elif defined(NeXT)
(*cdevsw[major(tp->t_dev)].d_stop)(tp, rw);
#else
(*cdevsw[major(tp->t_dev)]->d_stop)(tp, rw);
#endif
}
static int
ttywflush(tp)
struct tty *tp;
{
int error;
if ((error = ttywait(tp)) == 0)
ttyflush(tp, FREAD);
return (error);
}
void
ttyflush(tp, rw)
register struct tty *tp;
int rw;
{
register int s;
s = spltty();
#if 0
again:
#endif
if (rw & FWRITE) {
FLUSHQ(&tp->t_outq);
CLR(tp->t_state, TS_TTSTOP);
}
ttystop(tp, rw);
if (rw & FREAD) {
FLUSHQ(&tp->t_canq);
FLUSHQ(&tp->t_rawq);
CLR(tp->t_lflag, PENDIN);
tp->t_rocount = 0;
tp->t_rocol = 0;
CLR(tp->t_state, TS_LOCAL);
ttwakeup(tp);
if (ISSET(tp->t_state, TS_TBLOCK)) {
if (rw & FWRITE)
FLUSHQ(&tp->t_outq);
ttyunblock(tp);
CLR(tp->t_state, TS_TBLOCK);
#if 0
if (ISSET(tp->t_iflag, IXOFF)) {
SET(tp->t_state, TS_SO_OCOMPLETE);
ttysleep(tp, TSA_OCOMPLETE(tp), TTOPRI,
"ttyfls", hz / 10);
CLR(tp->t_state, TS_TBLOCK);
goto again;
}
#endif
}
}
if (rw & FWRITE) {
FLUSHQ(&tp->t_outq);
ttwwakeup(tp);
}
splx(s);
}
void
termioschars(t)
struct termios *t;
{
bcopy(ttydefchars, t->c_cc, sizeof t->c_cc);
}
void
ttychars(tp)
struct tty *tp;
{
termioschars(&tp->t_termios);
}
void
ttyblock(tp)
struct tty *tp;
{
SET(tp->t_state, TS_TBLOCK);
if (ISSET(tp->t_iflag, IXOFF) && tp->t_cc[VSTOP] != _POSIX_VDISABLE &&
putc(tp->t_cc[VSTOP], &tp->t_outq) != 0)
CLR(tp->t_state, TS_TBLOCK);
ttstart(tp);
}
static void
ttyunblock(tp)
struct tty *tp;
{
CLR(tp->t_state, TS_TBLOCK);
if (ISSET(tp->t_iflag, IXOFF) && tp->t_cc[VSTART] != _POSIX_VDISABLE &&
putc(tp->t_cc[VSTART], &tp->t_outq) != 0)
SET(tp->t_state, TS_TBLOCK);
ttstart(tp);
}
#if defined(NeXT) || defined(notyet)
void
ttrstrt(tp_arg)
void *tp_arg;
{
struct tty *tp;
int s;
#if DIAGNOSTIC
if (tp_arg == NULL)
panic("ttrstrt");
#endif
tp = tp_arg;
s = spltty();
CLR(tp->t_state, TS_TIMEOUT);
ttstart(tp);
splx(s);
}
#endif
int
ttstart(tp)
struct tty *tp;
{
if (tp->t_oproc != NULL)
(*tp->t_oproc)(tp);
return (0);
}
int
ttylclose(tp, flag)
struct tty *tp;
int flag;
{
if ( (flag & FNONBLOCK) || ttywflush(tp))
ttyflush(tp, FREAD | FWRITE);
return (0);
}
int
ttymodem(tp, flag)
register struct tty *tp;
int flag;
{
if (ISSET(tp->t_state, TS_CARR_ON) && ISSET(tp->t_cflag, MDMBUF)) {
if (flag) {
CLR(tp->t_state, TS_CAR_OFLOW);
CLR(tp->t_state, TS_TTSTOP);
ttstart(tp);
} else if (!ISSET(tp->t_state, TS_CAR_OFLOW)) {
SET(tp->t_state, TS_CAR_OFLOW);
SET(tp->t_state, TS_TTSTOP);
ttystop(tp, 0);
}
} else if (flag == 0) {
CLR(tp->t_state, TS_CARR_ON);
if (ISSET(tp->t_state, TS_ISOPEN) &&
!ISSET(tp->t_cflag, CLOCAL)) {
SET(tp->t_state, TS_ZOMBIE);
CLR(tp->t_state, TS_CONNECTED);
if (tp->t_session && tp->t_session->s_leader)
psignal(tp->t_session->s_leader, SIGHUP);
ttyflush(tp, FREAD | FWRITE);
return (0);
}
} else {
SET(tp->t_state, TS_CARR_ON);
if (!ISSET(tp->t_state, TS_ZOMBIE))
SET(tp->t_state, TS_CONNECTED);
wakeup(TSA_CARR_ON(tp));
ttwakeup(tp);
ttwwakeup(tp);
}
return (1);
}
static void
ttypend(tp)
register struct tty *tp;
{
struct clist tq;
register int c;
CLR(tp->t_lflag, PENDIN);
SET(tp->t_state, TS_TYPEN);
#ifndef NeXT
tq = tp->t_rawq;
bzero(&tp->t_rawq, sizeof tp->t_rawq);
tp->t_rawq.c_cbmax = tq.c_cbmax;
tp->t_rawq.c_cbreserved = tq.c_cbreserved;
#else
tq = tp->t_rawq;
tp->t_rawq.c_cc = 0;
tp->t_rawq.c_cf = tp->t_rawq.c_cl = 0;
#endif
while ((c = getc(&tq)) >= 0)
ttyinput(c, tp);
CLR(tp->t_state, TS_TYPEN);
}
int
ttread(tp, uio, flag)
register struct tty *tp;
struct uio *uio;
int flag;
{
register struct clist *qp;
register int c;
register tcflag_t lflag;
register cc_t *cc = tp->t_cc;
register struct proc *p = current_proc();
int s, first, error = 0;
int has_etime = 0, last_cc = 0;
long slp = 0;
loop:
s = spltty();
lflag = tp->t_lflag;
if (ISSET(lflag, PENDIN)) {
ttypend(tp);
splx(s);
s = spltty();
lflag = tp->t_lflag;
}
if (isbackground(p, tp)) {
splx(s);
if ((p->p_sigignore & sigmask(SIGTTIN)) ||
(p->p_sigmask & sigmask(SIGTTIN)) ||
p->p_flag & P_PPWAIT || p->p_pgrp->pg_jobc == 0)
return (EIO);
pgsignal(p->p_pgrp, SIGTTIN, 1);
error = ttysleep(tp, &lbolt, TTIPRI | PCATCH | PTTYBLOCK, "ttybg2", 0);
if (error)
return (error);
goto loop;
}
if (ISSET(tp->t_state, TS_ZOMBIE)) {
splx(s);
return (0);
}
qp = ISSET(lflag, ICANON) ? &tp->t_canq : &tp->t_rawq;
if (flag & IO_NDELAY) {
if (qp->c_cc > 0)
goto read;
if (!ISSET(lflag, ICANON) && cc[VMIN] == 0) {
splx(s);
return (0);
}
splx(s);
return (EWOULDBLOCK);
}
if (!ISSET(lflag, ICANON)) {
int m = cc[VMIN];
long t = cc[VTIME];
struct timeval etime, timecopy;
int x;
if (t == 0) {
if (qp->c_cc < m)
goto sleep;
if (qp->c_cc > 0)
goto read;
splx(s);
return (0);
}
t *= 100000;
#define diff(t1, t2) (((t1).tv_sec - (t2).tv_sec) * 1000000 + \
((t1).tv_usec - (t2).tv_usec))
if (m > 0) {
if (qp->c_cc <= 0)
goto sleep;
if (qp->c_cc >= m)
goto read;
x = splclock();
timecopy = time;
splx(x);
if (!has_etime) {
has_etime = 1;
etime.tv_sec = t / 1000000;
etime.tv_usec = (t - (etime.tv_sec * 1000000));
timeradd(&etime, &timecopy, &etime);
slp = t;
} else if (qp->c_cc > last_cc) {
etime.tv_sec = t / 1000000;
etime.tv_usec = (t - (etime.tv_sec * 1000000));
timeradd(&etime, &timecopy, &etime);
slp = t;
} else {
if (timercmp(&etime, &timecopy, <=))
goto read;
slp = diff(etime, timecopy);
}
last_cc = qp->c_cc;
} else {
if (qp->c_cc > 0)
goto read;
x = splclock();
timecopy = time;
splx(x);
if (!has_etime) {
has_etime = 1;
etime.tv_sec = t / 1000000;
etime.tv_usec = (t - (etime.tv_sec * 1000000));
timeradd(&etime, &timecopy, &etime);
slp = t;
} else {
if (timercmp(&etime, &timecopy, <=)) {
splx(s);
return (0);
}
slp = diff(etime, timecopy);
}
}
#undef diff
slp = (long) (((u_long)slp * hz) + 999999) / 1000000;
goto sleep;
}
if (qp->c_cc <= 0) {
sleep:
error = ttysleep(tp, TSA_HUP_OR_INPUT(tp), TTIPRI | PCATCH,
ISSET(tp->t_state, TS_CONNECTED) ?
"ttyin" : "ttyhup", (int)slp);
splx(s);
if (error == EWOULDBLOCK)
error = 0;
else if (error)
return (error);
slp = 0;
goto loop;
}
read:
splx(s);
first = 1;
#ifdef NeXT
if (ISSET(lflag, ICANON)
|| (ISSET(lflag, IEXTEN | ISIG) == (IEXTEN | ISIG)) )
#else
if (ISSET(lflag, ICANON | ISIG))
#endif
goto slowcase;
for (;;) {
char ibuf[IBUFSIZ];
int icc;
icc = min(uio->uio_resid, IBUFSIZ);
icc = q_to_b(qp, ibuf, icc);
if (icc <= 0) {
if (first)
goto loop;
break;
}
error = uiomove(ibuf, icc, uio);
#if NSNP > 0
if (ISSET(tp->t_lflag, ECHO) &&
ISSET(tp->t_state, TS_SNOOP) && tp->t_sc != NULL)
snpin((struct snoop *)tp->t_sc, ibuf, icc);
#endif
if (error)
break;
if (uio->uio_resid == 0)
break;
first = 0;
}
goto out;
slowcase:
for (;;) {
c = getc(qp);
if (c < 0) {
if (first)
goto loop;
break;
}
if (CCEQ(cc[VDSUSP], c) &&
ISSET(lflag, IEXTEN | ISIG) == (IEXTEN | ISIG)) {
pgsignal(tp->t_pgrp, SIGTSTP, 1);
if (first) {
error = ttysleep(tp, &lbolt, TTIPRI | PCATCH,
"ttybg3", 0);
if (error)
break;
goto loop;
}
break;
}
if (CCEQ(cc[VEOF], c) && ISSET(lflag, ICANON))
break;
error = ureadc(c, uio);
if (error)
break;
#if NSNP > 0
if (ISSET(tp->t_lflag, ECHO) &&
ISSET(tp->t_state, TS_SNOOP) && tp->t_sc != NULL)
snpinc((struct snoop *)tp->t_sc, (char)c);
#endif
if (uio->uio_resid == 0)
break;
if (ISSET(lflag, ICANON) && TTBREAKC(c, lflag))
break;
first = 0;
}
out:
s = spltty();
if (ISSET(tp->t_state, TS_TBLOCK) &&
tp->t_rawq.c_cc + tp->t_canq.c_cc <= I_LOW_WATER)
ttyunblock(tp);
splx(s);
return (error);
}
int
ttycheckoutq(tp, wait)
register struct tty *tp;
int wait;
{
int hiwat, s, oldsig;
hiwat = tp->t_hiwat;
s = spltty();
oldsig = wait ? current_proc()->p_siglist : 0;
if (tp->t_outq.c_cc > hiwat + OBUFSIZ + 100)
while (tp->t_outq.c_cc > hiwat) {
ttstart(tp);
if (tp->t_outq.c_cc <= hiwat)
break;
if (wait == 0 || current_proc()->p_siglist != oldsig) {
splx(s);
return (0);
}
SET(tp->t_state, TS_SO_OLOWAT);
tsleep(TSA_OLOWAT(tp), PZERO - 1, "ttoutq", hz);
}
splx(s);
return (1);
}
int
ttwrite(tp, uio, flag)
register struct tty *tp;
register struct uio *uio;
int flag;
{
register char *cp = NULL;
register int cc, ce;
register struct proc *p;
int i, hiwat, cnt, error, s;
char obuf[OBUFSIZ];
hiwat = tp->t_hiwat;
cnt = uio->uio_resid;
error = 0;
cc = 0;
loop:
s = spltty();
if (ISSET(tp->t_state, TS_ZOMBIE)) {
splx(s);
if (uio->uio_resid == cnt)
error = EIO;
goto out;
}
if (!ISSET(tp->t_state, TS_CONNECTED)) {
if (flag & IO_NDELAY) {
splx(s);
error = EWOULDBLOCK;
goto out;
}
error = ttysleep(tp, TSA_CARR_ON(tp), TTIPRI | PCATCH,
"ttydcd", 0);
splx(s);
if (error) {
goto out; }
goto loop;
}
splx(s);
p = current_proc();
if (isbackground(p, tp) &&
ISSET(tp->t_lflag, TOSTOP) && (p->p_flag & P_PPWAIT) == 0 &&
(p->p_sigignore & sigmask(SIGTTOU)) == 0 &&
(p->p_sigmask & sigmask(SIGTTOU)) == 0) {
if (p->p_pgrp->pg_jobc == 0) {
error = EIO;
goto out;
}
pgsignal(p->p_pgrp, SIGTTOU, 1);
error = ttysleep(tp, &lbolt, TTIPRI | PCATCH | PTTYBLOCK, "ttybg4", 0);
if (error)
goto out;
goto loop;
}
while (uio->uio_resid > 0 || cc > 0) {
if (ISSET(tp->t_lflag, FLUSHO)) {
uio->uio_resid = 0;
return (0);
}
if (tp->t_outq.c_cc > hiwat)
goto ovhiwat;
if (cc == 0) {
cc = min(uio->uio_resid, OBUFSIZ);
cp = obuf;
error = uiomove(cp, cc, uio);
if (error) {
cc = 0;
break;
}
#if NSNP > 0
if (ISSET(tp->t_state, TS_SNOOP) && tp->t_sc != NULL)
snpin((struct snoop *)tp->t_sc, cp, cc);
#endif
}
while (cc > 0) {
if (!ISSET(tp->t_oflag, OPOST))
ce = cc;
else {
ce = cc - scanc((u_int)cc, (u_char *)cp,
(u_char *)char_type, CCLASSMASK);
if (ce == 0) {
tp->t_rocount = 0;
if (ttyoutput(*cp, tp) >= 0) {
#ifdef NeXT
goto overfull;
#else
ttstart(tp);
if (flag & IO_NDELAY) {
error = EWOULDBLOCK;
goto out;
}
error = ttysleep(tp, &lbolt,
TTOPRI|PCATCH,
"ttybf1", 0);
if (error)
goto out;
goto loop;
#endif
}
cp++;
cc--;
if (ISSET(tp->t_lflag, FLUSHO) ||
tp->t_outq.c_cc > hiwat)
goto ovhiwat;
continue;
}
}
tp->t_rocount = 0;
i = b_to_q(cp, ce, &tp->t_outq);
ce -= i;
tp->t_column += ce;
cp += ce, cc -= ce, tk_nout += ce;
tp->t_outcc += ce;
if (i > 0) {
#ifdef NeXT
goto overfull;
#else
ttstart(tp);
if (flag & IO_NDELAY) {
error = EWOULDBLOCK;
goto out;
}
error = ttysleep(tp, &lbolt, TTOPRI | PCATCH,
"ttybf2", 0);
if (error)
goto out;
goto loop;
#endif
}
if (ISSET(tp->t_lflag, FLUSHO) ||
tp->t_outq.c_cc > hiwat)
break;
}
ttstart(tp);
}
out:
uio->uio_resid += cc;
return (error);
#ifdef NeXT
overfull:
hiwat = tp->t_outq.c_cc - 1;
#endif
ovhiwat:
ttstart(tp);
s = spltty();
if (tp->t_outq.c_cc <= hiwat) {
splx(s);
goto loop;
}
if (flag & IO_NDELAY) {
splx(s);
uio->uio_resid += cc;
return (uio->uio_resid == cnt ? EWOULDBLOCK : 0);
}
SET(tp->t_state, TS_SO_OLOWAT);
error = ttysleep(tp, TSA_OLOWAT(tp), TTOPRI | PCATCH, "ttywri",
tp->t_timeout);
splx(s);
if (error == EWOULDBLOCK)
error = EIO;
if (error)
goto out;
goto loop;
}
static void
ttyrub(c, tp)
register int c;
register struct tty *tp;
{
register u_char *cp;
register int savecol;
int tabc, s;
if (!ISSET(tp->t_lflag, ECHO) || ISSET(tp->t_lflag, EXTPROC))
return;
CLR(tp->t_lflag, FLUSHO);
if (ISSET(tp->t_lflag, ECHOE)) {
if (tp->t_rocount == 0) {
ttyretype(tp);
return;
}
if (c == ('\t' | TTY_QUOTE) || c == ('\n' | TTY_QUOTE))
ttyrubo(tp, 2);
else {
CLR(c, ~TTY_CHARMASK);
switch (CCLASS(c)) {
case ORDINARY:
ttyrubo(tp, 1);
break;
case BACKSPACE:
case CONTROL:
case NEWLINE:
case RETURN:
case VTAB:
if (ISSET(tp->t_lflag, ECHOCTL))
ttyrubo(tp, 2);
break;
case TAB:
if (tp->t_rocount < tp->t_rawq.c_cc) {
ttyretype(tp);
return;
}
s = spltty();
savecol = tp->t_column;
SET(tp->t_state, TS_CNTTB);
SET(tp->t_lflag, FLUSHO);
tp->t_column = tp->t_rocol;
#ifndef NeXT
cp = tp->t_rawq.c_cf;
if (cp)
tabc = *cp;
for (; cp; cp = nextc(&tp->t_rawq, cp, &tabc))
ttyecho(tabc, tp);
#else
for (cp = firstc(&tp->t_rawq, &tabc); cp;
cp = nextc(&tp->t_rawq, cp, &tabc))
ttyecho(tabc, tp);
#endif
CLR(tp->t_lflag, FLUSHO);
CLR(tp->t_state, TS_CNTTB);
splx(s);
savecol -= tp->t_column;
tp->t_column += savecol;
if (savecol > 8)
savecol = 8;
while (--savecol >= 0)
(void)ttyoutput('\b', tp);
break;
default:
#define PANICSTR "ttyrub: would panic c = %d, val = %d\n"
(void)printf(PANICSTR, c, CCLASS(c));
#ifdef notdef
panic(PANICSTR, c, CCLASS(c));
#endif
}
}
} else if (ISSET(tp->t_lflag, ECHOPRT)) {
if (!ISSET(tp->t_state, TS_ERASE)) {
SET(tp->t_state, TS_ERASE);
(void)ttyoutput('\\', tp);
}
ttyecho(c, tp);
} else
ttyecho(tp->t_cc[VERASE], tp);
--tp->t_rocount;
}
static void
ttyrubo(tp, cnt)
register struct tty *tp;
int cnt;
{
while (cnt-- > 0) {
(void)ttyoutput('\b', tp);
(void)ttyoutput(' ', tp);
(void)ttyoutput('\b', tp);
}
}
static void
ttyretype(tp)
register struct tty *tp;
{
register u_char *cp;
int s, c;
if (tp->t_cc[VREPRINT] != _POSIX_VDISABLE)
ttyecho(tp->t_cc[VREPRINT], tp);
(void)ttyoutput('\n', tp);
s = spltty();
#ifndef NeXT
for (cp = tp->t_canq.c_cf, c = (cp != NULL ? *cp : 0);
cp != NULL; cp = nextc(&tp->t_canq, cp, &c))
ttyecho(c, tp);
for (cp = tp->t_rawq.c_cf, c = (cp != NULL ? *cp : 0);
cp != NULL; cp = nextc(&tp->t_rawq, cp, &c))
ttyecho(c, tp);
#else NeXT
for (cp = firstc(&tp->t_canq, &c); cp; cp = nextc(&tp->t_canq, cp, &c))
ttyecho(c, tp);
for (cp = firstc(&tp->t_rawq, &c); cp; cp = nextc(&tp->t_rawq, cp, &c))
ttyecho(c, tp);
#endif
CLR(tp->t_state, TS_ERASE);
splx(s);
tp->t_rocount = tp->t_rawq.c_cc;
tp->t_rocol = 0;
}
static void
ttyecho(c, tp)
register int c;
register struct tty *tp;
{
if (!ISSET(tp->t_state, TS_CNTTB))
CLR(tp->t_lflag, FLUSHO);
if ((!ISSET(tp->t_lflag, ECHO) &&
(c != '\n' || !ISSET(tp->t_lflag, ECHONL))) ||
ISSET(tp->t_lflag, EXTPROC))
return;
if (ISSET(tp->t_lflag, ECHOCTL) &&
((ISSET(c, TTY_CHARMASK) <= 037 && c != '\t' && c != '\n') ||
ISSET(c, TTY_CHARMASK) == 0177)) {
(void)ttyoutput('^', tp);
CLR(c, ~TTY_CHARMASK);
if (c == 0177)
c = '?';
else
c += 'A' - 1;
}
(void)ttyoutput(c, tp);
}
void
ttwakeup(tp)
register struct tty *tp;
{
#ifndef NeXT
if (tp->t_rsel.si_pid != 0)
#endif
selwakeup(&tp->t_rsel);
if (ISSET(tp->t_state, TS_ASYNC))
pgsignal(tp->t_pgrp, SIGIO, 1);
wakeup(TSA_HUP_OR_INPUT(tp));
}
void
ttwwakeup(tp)
register struct tty *tp;
{
#ifndef NeXT
if (tp->t_wsel.si_pid != 0 && tp->t_outq.c_cc <= tp->t_lowat)
#else
if (tp->t_outq.c_cc <= tp->t_lowat)
#endif
selwakeup(&tp->t_wsel);
if (ISSET(tp->t_state, TS_BUSY | TS_SO_OCOMPLETE) ==
TS_SO_OCOMPLETE && tp->t_outq.c_cc == 0) {
CLR(tp->t_state, TS_SO_OCOMPLETE);
wakeup(TSA_OCOMPLETE(tp));
}
if (ISSET(tp->t_state, TS_SO_OLOWAT) &&
tp->t_outq.c_cc <= tp->t_lowat) {
CLR(tp->t_state, TS_SO_OLOWAT);
wakeup(TSA_OLOWAT(tp));
}
}
int
ttspeedtab(speed, table)
int speed;
register struct speedtab *table;
{
for ( ; table->sp_speed != -1; table++)
if (table->sp_speed == speed)
return (table->sp_code);
return (-1);
}
void
ttsetwater(tp)
struct tty *tp;
{
register int cps, x;
#define CLAMP(x, h, l) ((x) > h ? h : ((x) < l) ? l : (x))
cps = tp->t_ospeed / 10;
tp->t_lowat = x = CLAMP(cps / 2, TTMAXLOWAT, TTMINLOWAT);
x += cps;
x = CLAMP(x, TTMAXHIWAT, TTMINHIWAT);
tp->t_hiwat = roundup(x, CBSIZE);
#undef CLAMP
}
#include <mach/thread_info.h>
void
ttyinfo(tp)
register struct tty *tp;
{
}
#ifndef NeXT
#define ISRUN(p) (((p)->p_stat == SRUN) || ((p)->p_stat == SIDL))
#define TESTAB(a, b) ((a)<<1 | (b))
#define ONLYA 2
#define ONLYB 1
#define BOTH 3
static int
proc_compare(p1, p2)
register struct proc *p1, *p2;
{
if (p1 == NULL)
return (1);
switch (TESTAB(ISRUN(p1), ISRUN(p2))) {
case ONLYA:
return (0);
case ONLYB:
return (1);
case BOTH:
if (p2->p_estcpu > p1->p_estcpu)
return (1);
if (p1->p_estcpu > p2->p_estcpu)
return (0);
return (p2->p_pid > p1->p_pid);
}
switch (TESTAB(p1->p_stat == SZOMB, p2->p_stat == SZOMB)) {
case ONLYA:
return (1);
case ONLYB:
return (0);
case BOTH:
return (p2->p_pid > p1->p_pid);
}
if (p2->p_slptime > p1->p_slptime)
return (0);
if (p1->p_slptime > p2->p_slptime)
return (1);
if (p1->p_flag & P_SINTR && (p2->p_flag & P_SINTR) == 0)
return (1);
if (p2->p_flag & P_SINTR && (p1->p_flag & P_SINTR) == 0)
return (0);
return (p2->p_pid > p1->p_pid);
}
#endif
int
tputchar(c, tp)
int c;
struct tty *tp;
{
register int s;
s = spltty();
if (!ISSET(tp->t_state, TS_CONNECTED)) {
splx(s);
return (-1);
}
if (c == '\n')
(void)ttyoutput('\r', tp);
(void)ttyoutput(c, tp);
ttstart(tp);
splx(s);
return (0);
}
int
ttysleep(tp, chan, pri, wmesg, timo)
struct tty *tp;
void *chan;
int pri, timo;
char *wmesg;
{
int error;
int gen;
gen = tp->t_gen;
error = tsleep(chan, pri, wmesg, timo);
if (error)
return (error);
return (tp->t_gen == gen ? 0 : ERESTART);
}
#ifdef NeXT
struct tty *
ttymalloc()
{
struct tty *tp;
MALLOC(tp, struct tty *, sizeof(struct tty), M_TTYS, M_WAITOK);
bzero(tp, sizeof *tp);
clalloc(&tp->t_rawq, TTYCLSIZE, 1);
clalloc(&tp->t_canq, TTYCLSIZE, 1);
clalloc(&tp->t_outq, TTYCLSIZE, 0);
return(tp);
}
void
ttyfree(tp)
struct tty *tp;
{
clfree(&tp->t_rawq);
clfree(&tp->t_canq);
clfree(&tp->t_outq);
FREE(tp, M_TTYS);
}
#else
#ifdef notyet
struct tty *
ttymalloc()
{
struct tty *tp;
tp = _MALLOC(sizeof *tp, M_TTYS, M_WAITOK);
bzero(tp, sizeof *tp);
return (tp);
}
#endif
#if 0
void
ttyfree(tp)
struct tty *tp;
{
FREE(tp, M_TTYS);
}
#endif
#endif