/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1997-2006 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
-/* Copyright (c) 1997 Apple Computer, Inc. All Rights Reserved */
/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
-#include <sys/proc.h>
+#include <sys/proc_internal.h>
+#include <sys/kauth.h>
#include <sys/tty.h>
#include <sys/conf.h>
-#include <sys/file.h>
+#include <sys/file_internal.h>
#include <sys/uio.h>
#include <sys/kernel.h>
#include <sys/vnode.h>
#include <sys/user.h>
#include <sys/signalvar.h>
-#ifndef NeXT
-
-#define FREE_BSDSTATIC static
-#else
-#include <machine/spl.h>
-
-#define FREE_BSDSTATIC __private_extern__
-#define d_open_t open_close_fcn_t
-#define d_close_t open_close_fcn_t
#define d_devtotty_t struct tty **
-#define d_ioctl_t ioctl_fcn_t
-#define d_read_t read_write_fcn_t
-#define d_write_t read_write_fcn_t
-#define d_select_t select_fcn_t
-typedef void d_stop_t __P((struct tty *tp, int rw));
-#endif /* NeXT */
-
-#ifdef notyet
-static void ptyattach __P((int n));
-#endif
-static void ptsstart __P((struct tty *tp));
-static void ptcwakeup __P((struct tty *tp, int flag));
-
-FREE_BSDSTATIC d_open_t ptsopen;
-FREE_BSDSTATIC d_close_t ptsclose;
-FREE_BSDSTATIC d_read_t ptsread;
-FREE_BSDSTATIC d_write_t ptswrite;
-FREE_BSDSTATIC d_ioctl_t ptyioctl;
-FREE_BSDSTATIC d_stop_t ptsstop;
-FREE_BSDSTATIC d_devtotty_t ptydevtotty;
-FREE_BSDSTATIC d_open_t ptcopen;
-FREE_BSDSTATIC d_close_t ptcclose;
-FREE_BSDSTATIC d_read_t ptcread;
-FREE_BSDSTATIC d_write_t ptcwrite;
-FREE_BSDSTATIC d_select_t ptcselect;
-
-#ifndef NeXT
-#define CDEV_MAJOR_S 5
-#define CDEV_MAJOR_C 6
-static struct cdevsw pts_cdevsw =
- { ptsopen, ptsclose, ptsread, ptswrite, /*5*/
- ptyioctl, ptsstop, nullreset, ptydevtotty,/* ttyp */
- ttselect, nommap, NULL, "pts", NULL, -1 };
-
-static struct cdevsw ptc_cdevsw =
- { ptcopen, ptcclose, ptcread, ptcwrite, /*6*/
- ptyioctl, nullstop, nullreset, ptydevtotty,/* ptyp */
- ptcselect, nommap, NULL, "ptc", NULL, -1 };
-#endif /* !NeXT */
+#ifdef d_stop_t
+#undef d_stop_t
+#endif
+typedef void d_stop_t(struct tty *tp, int rw);
+
+/* XXX function should be removed??? */
+int pty_init(int n_ptys);
+
+/* XXX should be a devfs function */
+int _devfs_setattr(void * handle, unsigned short mode, uid_t uid, gid_t gid);
+
+static void ptsstart(struct tty *tp);
+static void ptcwakeup(struct tty *tp, int flag);
+
+__private_extern__ d_open_t ptsopen;
+__private_extern__ d_close_t ptsclose;
+__private_extern__ d_read_t ptsread;
+__private_extern__ d_write_t ptswrite;
+__private_extern__ d_ioctl_t ptyioctl;
+__private_extern__ d_stop_t ptsstop;
+__private_extern__ d_devtotty_t ptydevtotty;
+__private_extern__ d_open_t ptcopen;
+__private_extern__ d_close_t ptcclose;
+__private_extern__ d_read_t ptcread;
+__private_extern__ d_write_t ptcwrite;
+__private_extern__ d_select_t ptcselect;
#if NPTY == 1
#undef NPTY
#warning You have only one pty defined, redefining to 32.
#endif
-#ifndef NeXT
-#ifdef DEVFS
-#define MAXUNITS (8 * 32)
-static void *devfs_token_pts[MAXUNITS];
-static void *devfs_token_ptc[MAXUNITS];
-static const char jnames[] = "pqrsPQRS";
-#if NPTY > MAXUNITS
-#undef NPTY
-#define NPTY MAXUNITS
-#warning Can't have more than 256 pty's with DEVFS defined.
-#endif /* NPTY > MAXUNITS */
-#endif /* DEVFS */
-#endif /* !NeXT */
-
#define BUFSIZ 100 /* Chunk size iomoved to/from user */
/*
* pts == /dev/tty[pqrsPQRS][0123456789abcdefghijklmnopqrstuv]
* ptc == /dev/pty[pqrsPQRS][0123456789abcdefghijklmnopqrstuv]
*/
-#ifndef NeXT
-FREE_BSDSTATIC struct tty pt_tty[NPTY]; /* XXX */
-#else /* NeXT */
-/* NeXT All references to have been changed to indirections in the file */
-FREE_BSDSTATIC struct tty *pt_tty[NPTY] = { NULL };
-#endif /* ! NeXT */
+/* All references to have been changed to indirections in the file */
+__private_extern__ struct tty *pt_tty[NPTY] = { NULL };
static struct pt_ioctl {
int pt_flags;
struct selinfo pt_selr, pt_selw;
u_char pt_send;
u_char pt_ucntl;
+ void *pt_devhandle; /* slave device handle for grantpt() */
} pt_ioctl[NPTY]; /* XXX */
static int npty = NPTY; /* for pstat -t */
#define PF_NOSTOP 0x40
#define PF_UCNTL 0x80 /* user control mode */
-#ifdef notyet
-/*
- * Establish n (or default if n is 1) ptys in the system.
- *
- * XXX cdevsw & pstat require the array `pty[]' to be an array
- */
-FREEBSD_STATIC void
-ptyattach(n)
- int n;
-{
- char *mem;
- register u_long ntb;
-#define DEFAULT_NPTY 32
-
- /* maybe should allow 0 => none? */
- if (n <= 1)
- n = DEFAULT_NPTY;
- ntb = n * sizeof(struct tty);
-#ifndef NeXT
- mem = malloc(ntb + ALIGNBYTES + n * sizeof(struct pt_ioctl),
- M_DEVBUF, M_WAITOK);
-#else
- MALLOC(mem, char *, ntb + ALIGNBYTES + n * sizeof(struct pt_ioctl),
- M_DEVBUF, M_WAITOK);
-#endif /* !NeXT */
- pt_tty = (struct tty *)mem;
- mem = (char *)ALIGN(mem + ntb);
- pt_ioctl = (struct pt_ioctl *)mem;
- npty = n;
-}
-#endif
-
#ifndef DEVFS
-int pty_init()
+int
+pty_init(__unused int n_ptys)
{
return 0;
}
#include <miscfs/devfs/devfs.h>
#define START_CHAR 'p'
#define HEX_BASE 16
-int pty_init(int n_ptys)
+int
+pty_init(int n_ptys)
{
int i;
int j;
int m = j * HEX_BASE + i;
if (m == n_ptys)
goto done;
- (void)devfs_make_node(makedev(4, m),
+ pt_ioctl[m].pt_devhandle = devfs_make_node(makedev(4, m),
DEVFS_CHAR, UID_ROOT, GID_WHEEL, 0666,
"tty%c%x", j + START_CHAR, i);
(void)devfs_make_node(makedev(5, m),
done:
return (0);
}
-#endif DEVFS
-
-/*ARGSUSED*/
-FREE_BSDSTATIC int
-ptsopen(dev, flag, devtype, p)
- dev_t dev;
- int flag, devtype;
- struct proc *p;
+#endif /* DEVFS */
+
+__private_extern__ int
+ptsopen(dev_t dev, int flag, __unused int devtype, __unused struct proc *p)
{
- register struct tty *tp;
+ struct tty *tp;
int error;
+ boolean_t funnel_state;
-#ifndef NeXT
- tp = &pt_tty[minor(dev)];
-#else
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
/*
- * You will see this sourt of code coming up in diffs later both
+ * You will see this sort of code coming up in diffs later both
* the ttymalloc and the tp indirection.
*/
- if (minor(dev) >= npty)
- return (ENXIO);
+ if (minor(dev) >= npty) {
+ error = ENXIO;
+ goto out;
+ }
if (!pt_tty[minor(dev)]) {
- tp = pt_tty[minor(dev)] = ttymalloc();
+ /*
+ * If we can't allocate a new one, act as if we had run out
+ * of device nodes.
+ */
+ if ((tp = pt_tty[minor(dev)] = ttymalloc()) == NULL) {
+ error = ENXIO;
+ goto out;
+ }
} else
tp = pt_tty[minor(dev)];
-#endif
if ((tp->t_state & TS_ISOPEN) == 0) {
ttychars(tp); /* Set up default chars */
tp->t_iflag = TTYDEF_IFLAG;
tp->t_cflag = TTYDEF_CFLAG;
tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
ttsetwater(tp); /* would be done in xxparam() */
- } else if (tp->t_state&TS_XCLUDE && p->p_ucred->cr_uid != 0)
- return (EBUSY);
+ } else if (tp->t_state&TS_XCLUDE && suser(kauth_cred_get(), NULL)) {
+ error = EBUSY;
+ goto out;
+ }
if (tp->t_oproc) /* Ctrlr still around. */
(void)(*linesw[tp->t_line].l_modem)(tp, 1);
while ((tp->t_state & TS_CARR_ON) == 0) {
error = ttysleep(tp, TSA_CARR_ON(tp), TTIPRI | PCATCH,
"ptsopn", 0);
if (error)
- return (error);
+ goto out;
}
error = (*linesw[tp->t_line].l_open)(dev, tp);
if (error == 0)
ptcwakeup(tp, FREAD|FWRITE);
+out:
+ (void) thread_funnel_set(kernel_flock, funnel_state);
return (error);
}
-FREE_BSDSTATIC int
-ptsclose(dev, flag, mode, p)
- dev_t dev;
- int flag, mode;
- struct proc *p;
+__private_extern__ int
+ptsclose(dev_t dev, int flag, __unused int mode, __unused proc_t p)
{
- register struct tty *tp;
+ struct tty *tp;
int err;
+ boolean_t funnel_state;
+ /*
+ * This is temporary until the VSX conformance tests
+ * are fixed. They are hanging with a deadlock
+ * where close(pts) will not complete without t_timeout set
+ */
+#define FIX_VSX_HANG 1
+#ifdef FIX_VSX_HANG
+ int save_timeout;
+#endif
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
tp = pt_tty[minor(dev)];
+#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
+ (void) thread_funnel_set(kernel_flock, funnel_state);
return (err);
}
-FREE_BSDSTATIC int
-ptsread(dev, uio, flag)
- dev_t dev;
- struct uio *uio;
- int flag;
+__private_extern__ int
+ptsread(dev_t dev, struct uio *uio, int flag)
{
-#ifndef NeXT
- struct proc *p = curproc;
-#else
struct proc *p = current_proc();
-#endif /* NeXT */
- register struct tty *tp = pt_tty[minor(dev)];
- register struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
+ struct tty *tp = pt_tty[minor(dev)];
+ struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
int error = 0;
struct uthread *ut;
+ boolean_t funnel_state;
+ struct pgrp *pg;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
- ut = (struct uthread *)get_bsdthread_info(current_act());
+
+ 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_pgrp->pg_jobc == 0 ||
- p->p_flag & P_PPWAIT)
- return (EIO);
- pgsignal(p->p_pgrp, SIGTTIN, 1);
+ p->p_lflag & P_LPPWAIT) {
+ error = EIO;
+ goto out;
+ }
+
+
+ pg = proc_pgrp(p);
+ if (pg == PGRP_NULL) {
+ error = EIO;
+ goto out;
+ }
+ if (pg->pg_jobc == 0) {
+ pg_rele(pg);
+ error = EIO;
+ goto out;
+ }
+ pgsignal(pg, SIGTTIN, 1);
+ pg_rele(pg);
+
error = ttysleep(tp, &lbolt, TTIPRI | PCATCH | PTTYBLOCK, "ptsbg",
0);
if (error)
- return (error);
+ goto out;
}
if (tp->t_canq.c_cc == 0) {
if (flag & IO_NDELAY)
error = ttysleep(tp, TSA_PTS_READ(tp), TTIPRI | PCATCH,
"ptsin", 0);
if (error)
- return (error);
+ goto out;
goto again;
}
- while (tp->t_canq.c_cc > 1 && uio->uio_resid > 0)
- if (ureadc(getc(&tp->t_canq), uio) < 0) {
- error = EFAULT;
+ while (tp->t_canq.c_cc > 1 && uio_resid(uio) > 0) {
+ int cc;
+ char buf[BUFSIZ];
+
+ cc = min(uio_resid(uio), BUFSIZ);
+ // Don't copy the very last byte
+ 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)
- return (error);
+ goto out;
} else
if (tp->t_oproc)
error = (*linesw[tp->t_line].l_read)(tp, uio, flag);
ptcwakeup(tp, FWRITE);
+out:
+ (void) thread_funnel_set(kernel_flock, funnel_state);
return (error);
}
* Wakeups of controlling tty will happen
* indirectly, when tty driver calls ptsstart.
*/
-FREE_BSDSTATIC int
-ptswrite(dev, uio, flag)
- dev_t dev;
- struct uio *uio;
- int flag;
+__private_extern__ int
+ptswrite(dev_t dev, struct uio *uio, int flag)
{
- register struct tty *tp;
+ struct tty *tp;
+ int error;
+ boolean_t funnel_state;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
tp = pt_tty[minor(dev)];
if (tp->t_oproc == 0)
- return (EIO);
- return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
+ error = EIO;
+ else
+ error = (*linesw[tp->t_line].l_write)(tp, uio, flag);
+
+ (void) thread_funnel_set(kernel_flock, funnel_state);
+ return (error);
}
/*
* Wake up process selecting or sleeping for input from controlling tty.
*/
static void
-ptsstart(tp)
- struct tty *tp;
+ptsstart(struct tty *tp)
{
- register struct pt_ioctl *pti = &pt_ioctl[minor(tp->t_dev)];
+ struct pt_ioctl *pti = &pt_ioctl[minor(tp->t_dev)];
+ boolean_t funnel_state;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
if (tp->t_state & TS_TTSTOP)
- return;
+ goto out;
if (pti->pt_flags & PF_STOPPED) {
pti->pt_flags &= ~PF_STOPPED;
pti->pt_send = TIOCPKT_START;
}
ptcwakeup(tp, FREAD);
+out:
+ (void) thread_funnel_set(kernel_flock, funnel_state);
+ return;
}
static void
-ptcwakeup(tp, flag)
- struct tty *tp;
- int flag;
+ptcwakeup(struct tty *tp, int flag)
{
struct pt_ioctl *pti = &pt_ioctl[minor(tp->t_dev)];
+ boolean_t funnel_state;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
if (flag & FREAD) {
selwakeup(&pti->pt_selr);
selwakeup(&pti->pt_selw);
wakeup(TSA_PTC_WRITE(tp));
}
+ (void) thread_funnel_set(kernel_flock, funnel_state);
}
-FREE_BSDSTATIC int
-ptcopen(dev, flag, devtype, p)
- dev_t dev;
- int flag, devtype;
- struct proc *p;
+__private_extern__ int
+ptcopen(dev_t dev, __unused int flag, __unused int devtype, __unused proc_t p)
{
- register struct tty *tp;
+ struct tty *tp;
struct pt_ioctl *pti;
+ int error = 0;
+ boolean_t funnel_state;
- if (minor(dev) >= npty)
- return (ENXIO);
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
+
+ if (minor(dev) >= npty) {
+ error = ENXIO;
+ goto out;
+ }
if(!pt_tty[minor(dev)]) {
tp = pt_tty[minor(dev)] = ttymalloc();
} else
tp = pt_tty[minor(dev)];
- if (tp->t_oproc)
- return (EIO);
+ /* If master is open OR slave is still draining, pty is still busy */
+ if (tp->t_oproc || (tp->t_state & TS_ISOPEN)) {
+ error = EBUSY;
+ goto out;
+ }
tp->t_oproc = ptsstart;
+ CLR(tp->t_state, TS_ZOMBIE);
#ifdef sun4c
tp->t_stop = ptsstop;
#endif
pti->pt_flags = 0;
pti->pt_send = 0;
pti->pt_ucntl = 0;
- return (0);
+out:
+ (void) thread_funnel_set(kernel_flock, funnel_state);
+ return (error);
}
-FREE_BSDSTATIC int
-ptcclose(dev, flags, fmt, p)
- dev_t dev;
- int flags;
- int fmt;
- struct proc *p;
+__private_extern__ int
+ptcclose(dev_t dev, __unused int flags, __unused int fmt, __unused proc_t p)
{
- register struct tty *tp;
+ struct tty *tp;
+ boolean_t funnel_state;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
tp = pt_tty[minor(dev)];
(void)(*linesw[tp->t_line].l_modem)(tp, 0);
}
tp->t_oproc = 0; /* mark closed */
+
+ (void) thread_funnel_set(kernel_flock, funnel_state);
return (0);
}
-FREE_BSDSTATIC int
-ptcread(dev, uio, flag)
- dev_t dev;
- struct uio *uio;
- int flag;
+__private_extern__ int
+ptcread(dev_t dev, struct uio *uio, int flag)
{
- register struct tty *tp = pt_tty[minor(dev)];
+ struct tty *tp = pt_tty[minor(dev)];
struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
char buf[BUFSIZ];
int error = 0, cc;
+ boolean_t funnel_state;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
/*
* We want to block until the slave
if (pti->pt_flags&PF_PKT && pti->pt_send) {
error = ureadc((int)pti->pt_send, uio);
if (error)
- return (error);
+ goto out;
if (pti->pt_send & TIOCPKT_IOCTL) {
- cc = min(uio->uio_resid,
+ cc = min(uio_resid(uio),
sizeof(tp->t_termios));
uiomove((caddr_t)&tp->t_termios, cc,
uio);
}
pti->pt_send = 0;
- return (0);
+ goto out;
}
if (pti->pt_flags&PF_UCNTL && pti->pt_ucntl) {
error = ureadc((int)pti->pt_ucntl, uio);
if (error)
- return (error);
+ goto out;
pti->pt_ucntl = 0;
- return (0);
+ goto out;
}
if (tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0)
break;
}
if ((tp->t_state & TS_CONNECTED) == 0)
- return (0); /* EOF */
- if (flag & IO_NDELAY)
- return (EWOULDBLOCK);
+ goto out; /* EOF */
+ if (flag & IO_NDELAY) {
+ error = EWOULDBLOCK;
+ goto out;
+ }
error = tsleep(TSA_PTC_READ(tp), TTIPRI | PCATCH, "ptcin", 0);
if (error)
- return (error);
+ goto out;
}
if (pti->pt_flags & (PF_PKT|PF_UCNTL))
error = ureadc(0, uio);
- while (uio->uio_resid > 0 && error == 0) {
- cc = q_to_b(&tp->t_outq, buf, min(uio->uio_resid, BUFSIZ));
+ while (uio_resid(uio) > 0 && error == 0) {
+ cc = q_to_b(&tp->t_outq, (u_char *)buf, min(uio_resid(uio), BUFSIZ));
if (cc <= 0)
break;
error = uiomove(buf, cc, uio);
}
- ttwwakeup(tp);
+ (*linesw[tp->t_line].l_start)(tp);
+
+out:
+ (void) thread_funnel_set(kernel_flock, funnel_state);
return (error);
}
-FREE_BSDSTATIC void
-ptsstop(tp, flush)
- register struct tty *tp;
- int flush;
+__private_extern__ void
+ptsstop(struct tty *tp, int flush)
{
struct pt_ioctl *pti = &pt_ioctl[minor(tp->t_dev)];
int flag;
+ boolean_t funnel_state;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
/* note: FLUSHREAD and FLUSHWRITE already ok */
if (flush == 0) {
if (flush & FWRITE)
flag |= FREAD;
ptcwakeup(tp, flag);
+
+ (void) thread_funnel_set(kernel_flock, funnel_state);
}
-FREE_BSDSTATIC int
-ptcselect(dev, rw, wql, p)
- dev_t dev;
- int rw;
- void * wql;
- struct proc *p;
+__private_extern__ int
+ptcselect(dev_t dev, int rw, void *wql, struct proc *p)
{
- register struct tty *tp = pt_tty[minor(dev)];
+ struct tty *tp = pt_tty[minor(dev)];
struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
- int s;
+ int retval = 0;
+ boolean_t funnel_state;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
- if ((tp->t_state & TS_CONNECTED) == 0)
- return (1);
+ if ((tp->t_state & TS_CONNECTED) == 0) {
+ retval = 1;
+ goto out;
+ }
switch (rw) {
case FREAD:
/*
* Need to block timeouts (ttrstart).
*/
- s = spltty();
if ((tp->t_state&TS_ISOPEN) &&
tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0) {
- splx(s);
- return (1);
+ retval = 1;
+ goto out;
}
- splx(s);
/* FALLTHROUGH */
case 0: /* exceptional */
if ((tp->t_state&TS_ISOPEN) &&
((pti->pt_flags&PF_PKT && pti->pt_send) ||
- (pti->pt_flags&PF_UCNTL && pti->pt_ucntl)))
- return (1);
+ (pti->pt_flags&PF_UCNTL && pti->pt_ucntl))) {
+ retval = 1;
+ goto out;
+ }
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)
- return (1);
+ if (tp->t_canq.c_cc == 0) {
+ retval = 1;
+ goto out;
+ }
} else {
- if (tp->t_rawq.c_cc + tp->t_canq.c_cc < TTYHOG-2)
- return (1);
- if (tp->t_canq.c_cc == 0 && (tp->t_iflag&ICANON))
- return (1);
+ if (tp->t_rawq.c_cc + tp->t_canq.c_cc < TTYHOG-2) {
+ retval = 1;
+ goto out;
+ }
+ if (tp->t_canq.c_cc == 0 && (tp->t_lflag&ICANON)) {
+ retval = 1;
+ goto out;
+ }
}
}
selrecord(p, &pti->pt_selw, wql);
break;
}
- return (0);
+out:
+ (void) thread_funnel_set(kernel_flock, funnel_state);
+ return (retval);
}
-FREE_BSDSTATIC int
-ptcwrite(dev, uio, flag)
- dev_t dev;
- register struct uio *uio;
- int flag;
+__private_extern__ int
+ptcwrite(dev_t dev, struct uio *uio, int flag)
{
- register struct tty *tp = pt_tty[minor(dev)];
- register u_char *cp = NULL;
- register int cc = 0;
+ struct tty *tp = pt_tty[minor(dev)];
+ u_char *cp = NULL;
+ int cc = 0;
u_char locbuf[BUFSIZ];
- int cnt = 0;
+ int wcnt = 0;
struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
int error = 0;
+ boolean_t funnel_state;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
again:
if ((tp->t_state&TS_ISOPEN) == 0)
if (pti->pt_flags & PF_REMOTE) {
if (tp->t_canq.c_cc)
goto block;
- while ((uio->uio_resid > 0 || cc > 0) &&
+ while ((uio_resid(uio) > 0 || cc > 0) &&
tp->t_canq.c_cc < TTYHOG - 1) {
if (cc == 0) {
- cc = min(uio->uio_resid, BUFSIZ);
+ cc = min(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)
- return (error);
+ goto out;
/* check again for safety */
if ((tp->t_state & TS_ISOPEN) == 0) {
/* adjust as usual */
- uio->uio_resid += cc;
- return (EIO);
+ uio_setresid(uio, (uio_resid(uio) + cc));
+ error = EIO;
+ goto out;
}
}
if (cc > 0) {
- cc = b_to_q((char *)cp, cc, &tp->t_canq);
+ cc = b_to_q((u_char *)cp, cc, &tp->t_canq);
/*
* XXX we don't guarantee that the canq size
* is >= TTYHOG, so the above b_to_q() may
}
}
/* adjust for data copied in but not written */
- uio->uio_resid += cc;
+ uio_setresid(uio, (uio_resid(uio) + cc));
(void) putc(0, &tp->t_canq);
ttwakeup(tp);
wakeup(TSA_PTS_READ(tp));
- return (0);
+ goto out;
}
- while (uio->uio_resid > 0 || cc > 0) {
+ while (uio_resid(uio) > 0 || cc > 0) {
if (cc == 0) {
- cc = min(uio->uio_resid, BUFSIZ);
+ cc = min(uio_resid(uio), BUFSIZ);
cp = locbuf;
error = uiomove((caddr_t)cp, cc, uio);
if (error)
- return (error);
+ goto out;
/* check again for safety */
if ((tp->t_state & TS_ISOPEN) == 0) {
/* adjust for data copied in but not written */
- uio->uio_resid += cc;
- return (EIO);
+ 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_iflag&ICANON))) {
+ (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);
- cnt++;
+ wcnt++;
cc--;
}
cc = 0;
}
- return (0);
+out:
+ (void) thread_funnel_set(kernel_flock, funnel_state);
+ return (error);
block:
/*
* Come here to wait for slave to open, for space
*/
if ((tp->t_state & TS_CONNECTED) == 0) {
/* adjust for data copied in but not written */
- uio->uio_resid += cc;
- return (EIO);
+ uio_setresid(uio, (uio_resid(uio) + cc));
+ error = EIO;
+ goto out;
}
if (flag & IO_NDELAY) {
/* adjust for data copied in but not written */
- uio->uio_resid += cc;
- if (cnt == 0)
- return (EWOULDBLOCK);
- return (0);
+ uio_setresid(uio, (uio_resid(uio) + cc));
+ if (wcnt == 0)
+ error = EWOULDBLOCK;
+ goto out;
}
error = tsleep(TSA_PTC_WRITE(tp), TTOPRI | PCATCH, "ptcout", 0);
if (error) {
/* adjust for data copied in but not written */
- uio->uio_resid += cc;
- return (error);
+ uio_setresid(uio, (uio_resid(uio) + cc));
+ goto out;
}
goto again;
}
-#ifndef NeXT
-/* XXX we eventually want to go to this model,
- * but premier can't change the cdevsw */
-static struct tty *
-ptydevtotty(dev)
- dev_t dev;
+__private_extern__ int
+ptyioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
{
- if (minor(dev) >= npty)
- return (NULL);
+ struct tty *tp = pt_tty[minor(dev)];
+ struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
+ u_char *cc = tp->t_cc;
+ int stop, error = 0;
+ boolean_t funnel_state;
- return &pt_tty[minor(dev)];
-}
-#endif /* !NeXT */
-
-/*ARGSUSED*/
-FREE_BSDSTATIC int
-#ifndef NeXT
-ptyioctl(dev, cmd, data, flag)
- dev_t dev;
- int cmd;
- caddr_t data;
- int flag;
-#else
-ptyioctl(dev, cmd, data, flag, p)
- dev_t dev;
- u_long cmd;
- caddr_t data;
- int flag;
- struct proc *p;
-#endif
-{
- register struct tty *tp = pt_tty[minor(dev)];
- register struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
- register u_char *cc = tp->t_cc;
- int stop, error;
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
/*
* IF CONTROLLER STTY THEN MUST FLUSH TO PREVENT A HANG.
}
tp->t_lflag &= ~EXTPROC;
}
- return(0);
+ goto out;
} else
-#ifndef NeXT
- if (cdevsw[major(dev)]->d_open == ptcopen)
-#else
if (cdevsw[major(dev)].d_open == ptcopen)
-#endif
switch (cmd) {
case TIOCGPGRP:
* in that case, tp must be the controlling terminal.
*/
*(int *)data = tp->t_pgrp ? tp->t_pgrp->pg_id : 0;
- return (0);
+ goto out;
case TIOCPKT:
if (*(int *)data) {
- if (pti->pt_flags & PF_UCNTL)
- return (EINVAL);
+ if (pti->pt_flags & PF_UCNTL) {
+ error = EINVAL;
+ goto out;
+ }
pti->pt_flags |= PF_PKT;
} else
pti->pt_flags &= ~PF_PKT;
- return (0);
+ goto out;
case TIOCUCNTL:
if (*(int *)data) {
- if (pti->pt_flags & PF_PKT)
- return (EINVAL);
+ if (pti->pt_flags & PF_PKT) {
+ error = EINVAL;
+ goto out;
+ }
pti->pt_flags |= PF_UCNTL;
} else
pti->pt_flags &= ~PF_UCNTL;
- return (0);
+ goto out;
case TIOCREMOTE:
if (*(int *)data)
else
pti->pt_flags &= ~PF_REMOTE;
ttyflush(tp, FREAD|FWRITE);
- return (0);
+ goto out;
-#ifdef COMPAT_43
+#if COMPAT_43_TTY
case TIOCSETP:
case TIOCSETN:
#endif
case TIOCSIG:
if (*(unsigned int *)data >= NSIG ||
- *(unsigned int *)data == 0)
- return(EINVAL);
+ *(unsigned int *)data == 0) {
+ error = EINVAL;
+ goto out;
+ }
if ((tp->t_lflag&NOFLSH) == 0)
ttyflush(tp, FREAD|FWRITE);
- pgsignal(tp->t_pgrp, *(unsigned int *)data, 1);
+ tty_pgsignal(tp, *(unsigned int *)data, 1);
if ((*(unsigned int *)data == SIGINFO) &&
((tp->t_lflag&NOKERNINFO) == 0))
ttyinfo(tp);
- return(0);
+ goto out;
+
+ case TIOCPTYGRANT: /* grantpt(3) */
+ /*
+ * Change the uid of the slave to that of the calling
+ * thread, change the gid of the slave to GID_TTY,
+ * change the mode to 0620 (rw--w----).
+ */
+ {
+ _devfs_setattr(pti->pt_devhandle, 0620, kauth_getuid(), GID_TTY);
+ goto out;
+ }
+
+ case TIOCPTYGNAME: /* ptsname(3) */
+ /*
+ * Report the name of the slave device in *data
+ * (128 bytes max.). Use the same derivation method
+ * used for calling devfs_make_node() to create it.
+ */
+ snprintf(data, 128, "/dev/tty%c%x",
+ START_CHAR + (minor(dev) / HEX_BASE),
+ minor(dev) % HEX_BASE);
+ error = 0;
+ goto out;
+
+ case TIOCPTYUNLK: /* unlockpt(3) */
+ /*
+ * Unlock the slave device so that it can be opened.
+ */
+ error = 0;
+ goto out;
}
error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
- if (error < 0)
- error = ttioctl(tp, cmd, data, flag, p);
- if (error < 0) {
- if (pti->pt_flags & PF_UCNTL &&
- (cmd & ~0xff) == UIOCCMD(0)) {
- if (cmd & 0xff) {
- pti->pt_ucntl = (u_char)cmd;
- ptcwakeup(tp, FREAD);
+ if (error == ENOTTY) {
+ error = ttioctl(tp, cmd, data, flag, p);
+ if (error == ENOTTY) {
+ if (pti->pt_flags & PF_UCNTL && (cmd & ~0xff) == UIOCCMD(0)) {
+ /* Process the UIOCMD ioctl group */
+ if (cmd & 0xff) {
+ pti->pt_ucntl = (u_char)cmd;
+ ptcwakeup(tp, FREAD);
+ }
+ error = 0;
+ goto out;
+ } else if (cmd == TIOCSBRK || cmd == TIOCCBRK) {
+ /*
+ * POSIX conformance; rdar://3936338
+ *
+ * Clear ENOTTY in the case of setting or
+ * clearing a break failing because pty's
+ * don't support break like real serial
+ * ports.
+ */
+ error = 0;
+ goto out;
}
- return (0);
}
- error = ENOTTY;
}
+
/*
* If external processing and packet mode send ioctl packet.
*/
case TIOCSETA:
case TIOCSETAW:
case TIOCSETAF:
-#ifdef COMPAT_43
+#if COMPAT_43_TTY
case TIOCSETP:
case TIOCSETN:
#endif
-#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
+#if COMPAT_43_TTY || defined(COMPAT_SUNOS)
case TIOCSETC:
case TIOCSLTC:
case TIOCLBIS:
ptcwakeup(tp, FREAD);
}
}
+out:
+ (void) thread_funnel_set(kernel_flock, funnel_state);
return (error);
}
-
-#ifndef NeXT
-static ptc_devsw_installed = 0;
-
-static void
-ptc_drvinit(void *unused)
-{
-#ifdef DEVFS
- int i,j,k;
-#endif
- dev_t dev;
-
- if( ! ptc_devsw_installed ) {
- dev = makedev(CDEV_MAJOR_S, 0);
- cdevsw_add(&dev, &pts_cdevsw, NULL);
- dev = makedev(CDEV_MAJOR_C, 0);
- cdevsw_add(&dev, &ptc_cdevsw, NULL);
- ptc_devsw_installed = 1;
-#ifdef DEVFS
- for ( i = 0 ; i<NPTY ; i++ ) {
- j = i / 32;
- k = i % 32;
- devfs_token_pts[i] =
- devfs_add_devswf(&pts_cdevsw,i,
- DV_CHR,0,0,0666,
- "tty%c%n",jnames[j],k);
- devfs_token_ptc[i] =
- devfs_add_devswf(&ptc_cdevsw,i,
- DV_CHR,0,0,0666,
- "pty%c%n",jnames[j],k);
- }
-#endif
- }
-}
-
-SYSINIT(ptcdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR_C,ptc_drvinit,NULL)
-#endif /* !NeXT */
projects / apple / xnu.git / blobdiff