FreeBSD-5.3/usr.sbin/ppp/tty.c
/*-
* Copyright (c) 1999 Brian Somers <brian@Awfulhak.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/usr.sbin/ppp/tty.c,v 1.30 2003/11/15 15:26:35 harti Exp $
*/
#include <sys/param.h>
#include <sys/un.h>
#if defined(__OpenBSD__) || defined(__NetBSD__)
#include <sys/ioctl.h>
#endif
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <sys/uio.h>
#include <termios.h>
#include <ttyent.h>
#include <unistd.h>
#ifndef NONETGRAPH
#include <netgraph.h>
#include <netgraph/ng_async.h>
#include <netgraph/ng_message.h>
#include <netgraph/ng_ppp.h>
#include <netgraph/ng_tty.h>
#endif
#include "layer.h"
#include "defs.h"
#include "mbuf.h"
#include "log.h"
#include "timer.h"
#include "lqr.h"
#include "hdlc.h"
#include "throughput.h"
#include "fsm.h"
#include "lcp.h"
#include "ccp.h"
#include "link.h"
#include "async.h"
#include "descriptor.h"
#include "physical.h"
#include "mp.h"
#include "chat.h"
#include "auth.h"
#include "chap.h"
#include "cbcp.h"
#include "datalink.h"
#include "main.h"
#include "id.h"
#include "tty.h"
#if defined(__mac68k__) || defined(__macppc__)
#undef CRTS_IFLOW
#undef CCTS_OFLOW
#define CRTS_IFLOW CDTRCTS
#define CCTS_OFLOW CDTRCTS
#endif
#define Online(dev) ((dev)->mbits & TIOCM_CD)
struct ttydevice {
struct device dev; /* What struct physical knows about */
struct pppTimer Timer; /* CD checks */
int mbits; /* Current DCD status */
int carrier_seconds; /* seconds before CD is *required* */
#ifndef NONETGRAPH
struct {
int speed; /* Pre-line-discipline speed */
int fd; /* Pre-line-discipline fd */
int disc; /* Old line-discipline */
} real;
char hook[sizeof NG_ASYNC_HOOK_SYNC]; /* our ng_socket hook */
int cs; /* A netgraph control socket (maybe) */
#endif
struct termios ios; /* To be able to reset from raw mode */
};
#define device2tty(d) ((d)->type == TTY_DEVICE ? (struct ttydevice *)d : NULL)
int
tty_DeviceSize(void)
{
return sizeof(struct ttydevice);
}
/*
* tty_Timeout() watches the DCD signal and mentions it if it's status
* changes.
*/
static void
tty_Timeout(void *data)
{
struct physical *p = data;
struct ttydevice *dev = device2tty(p->handler);
int ombits, change;
timer_Stop(&dev->Timer);
dev->Timer.load = SECTICKS; /* Once a second please */
timer_Start(&dev->Timer);
ombits = dev->mbits;
if (p->fd >= 0) {
if (ioctl(p->fd, TIOCMGET, &dev->mbits) < 0) {
/* we must be a pty ? */
if (p->cfg.cd.necessity != CD_DEFAULT)
log_Printf(LogWARN, "%s: Carrier ioctl not supported, "
"using ``set cd off''\n", p->link.name);
timer_Stop(&dev->Timer);
dev->mbits = TIOCM_CD;
return;
}
} else
dev->mbits = 0;
if (ombits == -1) {
/* First time looking for carrier */
if (Online(dev))
log_Printf(LogPHASE, "%s: %s: CD detected\n", p->link.name, p->name.full);
else if (++dev->carrier_seconds >= dev->dev.cd.delay) {
if (dev->dev.cd.necessity == CD_REQUIRED)
log_Printf(LogPHASE, "%s: %s: Required CD not detected\n",
p->link.name, p->name.full);
else {
log_Printf(LogPHASE, "%s: %s doesn't support CD\n",
p->link.name, p->name.full);
dev->mbits = TIOCM_CD; /* Dodgy null-modem cable ? */
}
timer_Stop(&dev->Timer);
/* tty_AwaitCarrier() will notice */
} else {
/* Keep waiting */
log_Printf(LogDEBUG, "%s: %s: Still no carrier (%d/%d)\n",
p->link.name, p->name.full, dev->carrier_seconds,
dev->dev.cd.delay);
dev->mbits = -1;
}
} else {
change = ombits ^ dev->mbits;
if (change & TIOCM_CD) {
if (dev->mbits & TIOCM_CD)
log_Printf(LogDEBUG, "%s: offline -> online\n", p->link.name);
else {
log_Printf(LogDEBUG, "%s: online -> offline\n", p->link.name);
log_Printf(LogPHASE, "%s: Carrier lost\n", p->link.name);
datalink_Down(p->dl, CLOSE_NORMAL);
timer_Stop(&dev->Timer);
}
} else
log_Printf(LogDEBUG, "%s: Still %sline\n", p->link.name,
Online(dev) ? "on" : "off");
}
}
static void
tty_StartTimer(struct physical *p)
{
struct ttydevice *dev = device2tty(p->handler);
timer_Stop(&dev->Timer);
dev->Timer.load = SECTICKS;
dev->Timer.func = tty_Timeout;
dev->Timer.name = "tty CD";
dev->Timer.arg = p;
log_Printf(LogDEBUG, "%s: Using tty_Timeout [%p]\n",
p->link.name, tty_Timeout);
timer_Start(&dev->Timer);
}
static int
tty_AwaitCarrier(struct physical *p)
{
struct ttydevice *dev = device2tty(p->handler);
if (dev->dev.cd.necessity == CD_NOTREQUIRED || physical_IsSync(p))
return CARRIER_OK;
if (dev->mbits == -1) {
if (dev->Timer.state == TIMER_STOPPED) {
dev->carrier_seconds = 0;
tty_StartTimer(p);
}
return CARRIER_PENDING; /* Not yet ! */
}
return Online(dev) ? CARRIER_OK : CARRIER_LOST;
}
#ifdef NONETGRAPH
#define tty_SetAsyncParams NULL
#define tty_Write NULL
#define tty_Read NULL
#else
static int
isngtty(struct ttydevice *dev)
{
return dev->real.fd != -1;
}
static void
tty_SetAsyncParams(struct physical *p, u_int32_t mymap, u_int32_t hismap)
{
struct ttydevice *dev = device2tty(p->handler);
char asyncpath[NG_PATHSIZ];
struct ng_async_cfg cfg;
if (isngtty(dev)) {
/* Configure the async converter node */
snprintf(asyncpath, sizeof asyncpath, ".:%s", dev->hook);
memset(&cfg, 0, sizeof cfg);
cfg.enabled = 1;
cfg.accm = mymap | hismap;
cfg.amru = MAX_MTU;
cfg.smru = MAX_MRU;
log_Printf(LogDEBUG, "Configure async node at %s\n", asyncpath);
if (NgSendMsg(dev->cs, asyncpath, NGM_ASYNC_COOKIE,
NGM_ASYNC_CMD_SET_CONFIG, &cfg, sizeof cfg) < 0)
log_Printf(LogWARN, "%s: Can't configure async node at %s\n",
p->link.name, asyncpath);
} else
/* No netgraph node, just config the async layer */
async_SetLinkParams(&p->async, mymap, hismap);
}
static int
LoadLineDiscipline(struct physical *p)
{
struct ttydevice *dev = device2tty(p->handler);
u_char rbuf[sizeof(struct ng_mesg) + sizeof(struct nodeinfo)];
struct ng_mesg *reply;
struct nodeinfo *info;
char ttypath[NG_NODESIZ];
struct ngm_mkpeer ngm;
struct ngm_connect ngc;
int ldisc, cs, ds, hot, speed;
/*
* Don't use the netgraph line discipline for now. Using it works, but
* carrier cannot be detected via TIOCMGET and the device doesn't become
* selectable with 0 bytes to read when carrier is lost :(
*/
return 0;
reply = (struct ng_mesg *)rbuf;
info = (struct nodeinfo *)reply->data;
loadmodules(LOAD_VERBOSLY, "netgraph", "ng_tty", "ng_async", "ng_socket",
NULL);
/* Get the speed before loading the line discipline */
speed = physical_GetSpeed(p);
if (ioctl(p->fd, TIOCGETD, &dev->real.disc) < 0) {
log_Printf(LogDEBUG, "%s: Couldn't get tty line discipline\n",
p->link.name);
return 0;
}
ldisc = NETGRAPHDISC;
if (ID0ioctl(p->fd, TIOCSETD, &ldisc) < 0) {
log_Printf(LogDEBUG, "%s: Couldn't set NETGRAPHDISC line discipline\n",
p->link.name);
return 0;
}
/* Get the name of the tty node */
if (ioctl(p->fd, NGIOCGINFO, info) < 0) {
log_Printf(LogWARN, "%s: ioctl(NGIOCGINFO): %s\n", p->link.name,
strerror(errno));
ID0ioctl(p->fd, TIOCSETD, &dev->real.disc);
return 0;
}
snprintf(ttypath, sizeof ttypath, "%s:", info->name);
/* Create a socket node for our endpoint (and to send messages via) */
if (ID0NgMkSockNode(NULL, &cs, &ds) == -1) {
log_Printf(LogWARN, "%s: NgMkSockNode: %s\n", p->link.name,
strerror(errno));
ID0ioctl(p->fd, TIOCSETD, &dev->real.disc);
return 0;
}
/* Set the ``hot char'' on the TTY node */
hot = HDLC_SYN;
log_Printf(LogDEBUG, "%s: Set tty hotchar to 0x%02x\n", p->link.name, hot);
if (NgSendMsg(cs, ttypath, NGM_TTY_COOKIE,
NGM_TTY_SET_HOTCHAR, &hot, sizeof hot) < 0) {
log_Printf(LogWARN, "%s: Can't set hot char\n", p->link.name);
goto failed;
}
/* Attach an async converter node */
snprintf(ngm.type, sizeof ngm.type, "%s", NG_ASYNC_NODE_TYPE);
snprintf(ngm.ourhook, sizeof ngm.ourhook, "%s", NG_TTY_HOOK);
snprintf(ngm.peerhook, sizeof ngm.peerhook, "%s", NG_ASYNC_HOOK_ASYNC);
log_Printf(LogDEBUG, "%s: Send mkpeer async:%s to %s:%s\n", p->link.name,
ngm.peerhook, ttypath, ngm.ourhook);
if (NgSendMsg(cs, ttypath, NGM_GENERIC_COOKIE,
NGM_MKPEER, &ngm, sizeof ngm) < 0) {
log_Printf(LogWARN, "%s: Can't create %s node\n", p->link.name,
NG_ASYNC_NODE_TYPE);
goto failed;
}
/* Connect the async node to our socket */
snprintf(ngc.path, sizeof ngc.path, "%s%s", ttypath, NG_TTY_HOOK);
snprintf(ngc.peerhook, sizeof ngc.peerhook, "%s", NG_ASYNC_HOOK_SYNC);
memcpy(ngc.ourhook, ngc.peerhook, sizeof ngc.ourhook);
log_Printf(LogDEBUG, "%s: Send connect %s:%s to .:%s\n", p->link.name,
ngc.path, ngc.peerhook, ngc.ourhook);
if (NgSendMsg(cs, ".:", NGM_GENERIC_COOKIE, NGM_CONNECT,
&ngc, sizeof ngc) < 0) {
log_Printf(LogWARN, "%s: Can't connect .:%s -> %s.%s: %s\n",
p->link.name, ngc.ourhook, ngc.path, ngc.peerhook,
strerror(errno));
goto failed;
}
/* Get the async node id */
if (NgSendMsg(cs, ngc.path, NGM_GENERIC_COOKIE, NGM_NODEINFO, NULL, 0) < 0) {
log_Printf(LogWARN, "%s: Can't request async node info at %s: %s\n",
p->link.name, ngc.path, strerror(errno));
goto failed;
}
if (NgRecvMsg(cs, reply, sizeof rbuf, NULL) < 0) {
log_Printf(LogWARN, "%s: Can't obtain async node info at %s: %s\n",
p->link.name, ngc.path, strerror(errno));
goto failed;
}
/* All done, set up our device state */
snprintf(dev->hook, sizeof dev->hook, "%s", ngc.ourhook);
dev->cs = cs;
dev->real.fd = p->fd;
p->fd = ds;
dev->real.speed = speed;
physical_SetSync(p);
tty_SetAsyncParams(p, 0xffffffff, 0xffffffff);
physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE);
log_Printf(LogPHASE, "%s: Loaded netgraph tty line discipline\n",
p->link.name);
return 1;
failed:
ID0ioctl(p->fd, TIOCSETD, &dev->real.disc);
close(ds);
close(cs);
return 0;
}
static void
UnloadLineDiscipline(struct physical *p)
{
struct ttydevice *dev = device2tty(p->handler);
if (isngtty(dev)) {
log_Printf(LogPHASE, "back to speed %d\n", dev->real.speed);
if (!physical_SetSpeed(p, dev->real.speed))
log_Printf(LogWARN, "Couldn't reset tty speed to %d\n", dev->real.speed);
dev->real.speed = 0;
close(p->fd);
p->fd = dev->real.fd;
dev->real.fd = -1;
close(dev->cs);
dev->cs = -1;
*dev->hook = '\0';
if (ID0ioctl(p->fd, TIOCSETD, &dev->real.disc) == 0) {
physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE);
log_Printf(LogPHASE, "%s: Unloaded netgraph tty line discipline\n",
p->link.name);
} else
log_Printf(LogWARN, "%s: Failed to unload netgraph tty line discipline\n",
p->link.name);
}
}
static ssize_t
tty_Write(struct physical *p, const void *v, size_t n)
{
struct ttydevice *dev = device2tty(p->handler);
if (isngtty(dev))
return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : n;
else
return write(p->fd, v, n);
}
static ssize_t
tty_Read(struct physical *p, void *v, size_t n)
{
struct ttydevice *dev = device2tty(p->handler);
char hook[sizeof NG_ASYNC_HOOK_SYNC];
if (isngtty(dev))
return NgRecvData(p->fd, v, n, hook);
else
return read(p->fd, v, n);
}
#endif /* NETGRAPH */
static int
tty_Raw(struct physical *p)
{
struct ttydevice *dev = device2tty(p->handler);
struct termios ios;
int oldflag;
log_Printf(LogDEBUG, "%s: Entering tty_Raw\n", p->link.name);
if (p->type != PHYS_DIRECT && p->fd >= 0 && !Online(dev))
log_Printf(LogDEBUG, "%s: Raw: descriptor = %d, mbits = %x\n",
p->link.name, p->fd, dev->mbits);
if (!physical_IsSync(p)) {
#ifndef NONETGRAPH
if (!LoadLineDiscipline(p))
#endif
{
tcgetattr(p->fd, &ios);
cfmakeraw(&ios);
if (p->cfg.rts_cts)
ios.c_cflag |= CLOCAL | CCTS_OFLOW | CRTS_IFLOW;
else
ios.c_cflag |= CLOCAL;
if (p->type != PHYS_DEDICATED)
ios.c_cflag |= HUPCL;
if (tcsetattr(p->fd, TCSANOW, &ios) == -1)
log_Printf(LogWARN, "%s: tcsetattr: Failed configuring device\n",
p->link.name);
}
}
oldflag = fcntl(p->fd, F_GETFL, 0);
if (oldflag < 0)
return 0;
fcntl(p->fd, F_SETFL, oldflag | O_NONBLOCK);
return 1;
}
static void
tty_Offline(struct physical *p)
{
struct ttydevice *dev = device2tty(p->handler);
if (p->fd >= 0) {
timer_Stop(&dev->Timer);
dev->mbits &= ~TIOCM_DTR; /* XXX: Hmm, what's this supposed to do ? */
if (Online(dev)) {
struct termios tio;
tcgetattr(p->fd, &tio);
if (cfsetspeed(&tio, B0) == -1 || tcsetattr(p->fd, TCSANOW, &tio) == -1)
log_Printf(LogWARN, "%s: Unable to set physical to speed 0\n",
p->link.name);
}
}
}
static void
tty_Cooked(struct physical *p)
{
struct ttydevice *dev = device2tty(p->handler);
int oldflag;
tty_Offline(p); /* In case of emergency close()s */
tcflush(p->fd, TCIOFLUSH);
if (!physical_IsSync(p) && tcsetattr(p->fd, TCSAFLUSH, &dev->ios) == -1)
log_Printf(LogWARN, "%s: tcsetattr: Unable to restore device settings\n",
p->link.name);
#ifndef NONETGRAPH
UnloadLineDiscipline(p);
#endif
if ((oldflag = fcntl(p->fd, F_GETFL, 0)) != -1)
fcntl(p->fd, F_SETFL, oldflag & ~O_NONBLOCK);
}
static void
tty_StopTimer(struct physical *p)
{
struct ttydevice *dev = device2tty(p->handler);
timer_Stop(&dev->Timer);
}
static void
tty_Free(struct physical *p)
{
struct ttydevice *dev = device2tty(p->handler);
tty_Offline(p); /* In case of emergency close()s */
free(dev);
}
static int
tty_Speed(struct physical *p)
{
struct termios ios;
if (tcgetattr(p->fd, &ios) == -1)
return 0;
return SpeedToInt(cfgetispeed(&ios));
}
static const char *
tty_OpenInfo(struct physical *p)
{
struct ttydevice *dev = device2tty(p->handler);
static char buf[13];
if (Online(dev))
strcpy(buf, "with");
else
strcpy(buf, "no");
strcat(buf, " carrier");
return buf;
}
static int
tty_Slot(struct physical *p)
{
struct ttyent *ttyp;
int slot;
setttyent();
for (slot = 1; (ttyp = getttyent()); ++slot)
if (!strcmp(ttyp->ty_name, p->name.base)) {
endttyent();
return slot;
}
endttyent();
return -1;
}
static void
tty_device2iov(struct device *d, struct iovec *iov, int *niov,
int maxiov, int *auxfd, int *nauxfd)
{
struct ttydevice *dev = device2tty(d);
int sz = physical_MaxDeviceSize();
iov[*niov].iov_base = realloc(d, sz);
if (iov[*niov].iov_base == NULL) {
log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz);
AbortProgram(EX_OSERR);
}
iov[*niov].iov_len = sz;
(*niov)++;
#ifndef NONETGRAPH
if (dev->cs >= 0) {
*auxfd = dev->cs;
(*nauxfd)++;
}
#endif
if (dev->Timer.state != TIMER_STOPPED) {
timer_Stop(&dev->Timer);
dev->Timer.state = TIMER_RUNNING;
}
}
static struct device basettydevice = {
TTY_DEVICE,
"tty",
0,
{ CD_VARIABLE, DEF_TTYCDDELAY },
tty_AwaitCarrier,
NULL,
tty_Raw,
tty_Offline,
tty_Cooked,
tty_SetAsyncParams,
tty_StopTimer,
tty_Free,
tty_Read,
tty_Write,
tty_device2iov,
tty_Speed,
tty_OpenInfo,
tty_Slot
};
struct device *
tty_iov2device(int type, struct physical *p, struct iovec *iov, int *niov,
int maxiov, int *auxfd, int *nauxfd)
{
if (type == TTY_DEVICE) {
struct ttydevice *dev = (struct ttydevice *)iov[(*niov)++].iov_base;
dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */
if (dev == NULL) {
log_Printf(LogALERT, "Failed to allocate memory: %d\n",
(int)(sizeof *dev));
AbortProgram(EX_OSERR);
}
#ifndef NONETGRAPH
if (*nauxfd) {
dev->cs = *auxfd;
(*nauxfd)--;
} else
dev->cs = -1;
#endif
/* Refresh function pointers etc */
memcpy(&dev->dev, &basettydevice, sizeof dev->dev);
physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE);
if (dev->Timer.state != TIMER_STOPPED) {
dev->Timer.state = TIMER_STOPPED;
p->handler = &dev->dev; /* For the benefit of StartTimer */
tty_StartTimer(p);
}
return &dev->dev;
}
return NULL;
}
struct device *
tty_Create(struct physical *p)
{
struct ttydevice *dev;
struct termios ios;
int oldflag;
if (p->fd < 0 || !isatty(p->fd))
/* Don't want this */
return NULL;
if (*p->name.full == '\0') {
physical_SetDevice(p, ttyname(p->fd));
log_Printf(LogDEBUG, "%s: Input is a tty (%s)\n",
p->link.name, p->name.full);
} else
log_Printf(LogDEBUG, "%s: Opened %s\n", p->link.name, p->name.full);
/* We're gonna return a ttydevice (unless something goes horribly wrong) */
if ((dev = malloc(sizeof *dev)) == NULL) {
/* Complete failure - parent doesn't continue trying to ``create'' */
close(p->fd);
p->fd = -1;
return NULL;
}
memcpy(&dev->dev, &basettydevice, sizeof dev->dev);
memset(&dev->Timer, '\0', sizeof dev->Timer);
dev->mbits = -1;
#ifndef NONETGRAPH
dev->real.speed = 0;
dev->real.fd = -1;
dev->real.disc = -1;
*dev->hook = '\0';
#endif
tcgetattr(p->fd, &ios);
dev->ios = ios;
if (p->cfg.cd.necessity != CD_DEFAULT)
/* Any override is ok for the tty device */
dev->dev.cd = p->cfg.cd;
log_Printf(LogDEBUG, "%s: tty_Create: physical (get): fd = %d,"
" iflag = %lx, oflag = %lx, cflag = %lx\n", p->link.name, p->fd,
(u_long)ios.c_iflag, (u_long)ios.c_oflag, (u_long)ios.c_cflag);
cfmakeraw(&ios);
if (p->cfg.rts_cts)
ios.c_cflag |= CLOCAL | CCTS_OFLOW | CRTS_IFLOW;
else {
ios.c_cflag |= CLOCAL;
ios.c_iflag |= IXOFF;
}
ios.c_iflag |= IXON;
if (p->type != PHYS_DEDICATED)
ios.c_cflag |= HUPCL;
if (p->type != PHYS_DIRECT) {
/* Change tty speed when we're not in -direct mode */
ios.c_cflag &= ~(CSIZE | PARODD | PARENB);
ios.c_cflag |= p->cfg.parity;
if (cfsetspeed(&ios, IntToSpeed(p->cfg.speed)) == -1)
log_Printf(LogWARN, "%s: %s: Unable to set speed to %d\n",
p->link.name, p->name.full, p->cfg.speed);
}
if (tcsetattr(p->fd, TCSADRAIN, &ios) == -1) {
log_Printf(LogWARN, "%s: tcsetattr: Failed configuring device\n",
p->link.name);
if (p->type != PHYS_DIRECT && p->cfg.speed > 115200)
log_Printf(LogWARN, "%.*s Perhaps the speed is unsupported\n",
(int)strlen(p->link.name), "");
}
log_Printf(LogDEBUG, "%s: physical (put): iflag = %lx, oflag = %lx, "
"cflag = %lx\n", p->link.name, (u_long)ios.c_iflag,
(u_long)ios.c_oflag, (u_long)ios.c_cflag);
oldflag = fcntl(p->fd, F_GETFL, 0);
if (oldflag < 0) {
/* Complete failure - parent doesn't continue trying to ``create'' */
log_Printf(LogWARN, "%s: Open: Cannot get physical flags: %s\n",
p->link.name, strerror(errno));
tty_Cooked(p);
close(p->fd);
p->fd = -1;
free(dev);
return NULL;
} else
fcntl(p->fd, F_SETFL, oldflag & ~O_NONBLOCK);
physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE);
return &dev->dev;
}