ref: 14ac74fce1017b5c23ff4aed6f0289ab82bf71a2
dir: /sys/src/cmd/postscript/postio/ifdef.c/
/*
*
* Conditionally compiled routines for setting up and reading the line. Things
* were getting out of hand with all the ifdefs, and even though this defeats
* part of the purpose of conditional complilation directives, I think it's easier
* to follow this way. Thanks to Alan Buckwalter for the System V DKHOST code.
*
* postio now can be run as separate read and write processes, but requires that
* you write a procedure called resetline() and perhaps modify readline() some.
* I've already tested the code on System V and it seems to work. Ninth Edition
* and BSD code may be missing.
*
* By request I've changed the way some of the setupline() procedures (eg. in the
* System V implementation) handle things when no line has been given. If line is
* NULL the new setupline() procedures try to continue, assuming whoever called
* postio connected stdout to the printer. Things will only work if we can read
* and write stdout!
*
*/
#include <stdio.h>
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/types.h>
#include <errno.h>
#include "ifdef.h" /* conditional header file inclusion */
#include "gen.h" /* general purpose definitions */
FILE *fp_ttyi, *fp_ttyo;
char *ptr = mesg;
extern int window_size;
/*****************************************************************************/
#ifdef SYSV
setupline()
{
struct termio termio;
/*
*
* Line initialization for SYSV. For now if no line is given (ie. line == NULL )
* we continue on as before using stdout as ttyi and ttyo. Doesn't work when we're
* running in interactive mode or forcing stuff that comes back from the printer
* to stdout. Both cases are now caught by a test that's been added to routine
* initialize(). The change is primarily for the version of lp that's available
* with SVR3.2.
*
*/
#ifdef DKHOST
if ( line != NULL && *line != '/' ) {
if ( strncmp(line, "DK:", 3) == 0 )
line += 3;
dkhost_connect();
#ifdef DKSTREAMS
if ( ioctl(ttyi, I_PUSH, DKSTREAMS) == -1 )
error(FATAL, "ioctl error - %s", DKSTREAMS);
if ( ioctl(ttyi, I_PUSH, "ldterm") == -1 )
error(FATAL, "ioctl error - ldterm");
#endif
} else
#endif
if ( line == NULL )
ttyi = fileno(stdout);
else if ( (ttyi = open(line, O_RDWR)) == -1 )
error(FATAL, "can't open %s", line);
if ( (ttyo = dup(ttyi)) == -1 )
error(FATAL, "can't dup file descriptor for %s", line);
if ( stopbits == 1 )
stopbits = 0;
else stopbits = CSTOPB;
if ( fcntl(ttyi, F_SETFL, O_NDELAY) == -1 )
error(FATAL, "fcntl error - F_SETFL");
if ( ioctl(ttyi, TCGETA, &termio) == -1 )
error(FATAL, "ioctl error - TCGETA");
termio.c_iflag = IXON | IGNCR;
termio.c_oflag = 0;
termio.c_cflag = HUPCL | CREAD | CS8 | stopbits | baudrate;
termio.c_lflag = 0;
termio.c_cc[VMIN] = termio.c_cc[VTIME] = 0;
if ( ioctl(ttyi, TCSETA, &termio) == -1 )
error(FATAL, "ioctl error - TCSETA");
if ( ioctl(ttyi, TCFLSH, 2) == -1 )
error(FATAL, "ioctl error - TCFLSH");
fp_ttyi = fdopen(ttyi, "r");
} /* End of setupline */
/*****************************************************************************/
resetline()
{
int flags; /* for turning O_NDELAY off */
struct termio termio; /* so we can reset flow control */
/*
*
* Only used if we're running the program as separate read and write processes.
* Called from split() after the initial connection has been made and returns
* TRUE if two processes should work. Don't know if the O_NDELAY stuff is really
* needed, but setting c_cc[VMIN] to 1 definitely is. If we leave it be (as a 0)
* the read in readline() won't block!
*
*/
if ( (flags = fcntl(ttyi, F_GETFL, 0)) == -1 )
error(FATAL, "fcntl error - F_GETFL");
flags &= ~O_NDELAY;
if ( fcntl(ttyi, F_SETFL, flags) == -1 )
error(FATAL, "fcntl error - F_SETFL");
if ( ioctl(ttyi, TCGETA, &termio) == -1 )
error(FATAL, "ioctl error - TCGETA");
termio.c_iflag &= ~IXANY;
termio.c_iflag |= IXON | IXOFF;
termio.c_cc[VMIN] = 1;
termio.c_cc[VTIME] = 0;
if ( ioctl(ttyi, TCSETA, &termio) == -1 )
error(FATAL, "ioctl error - TCSETA");
return(TRUE);
} /* End of resetline */
/*****************************************************************************/
setupstdin(mode)
int mode; /* what to do with stdin settings */
{
struct termio termio;
static int saved = FALSE;
static struct termio oldtermio;
/*
*
* Save (mode = 0), reset (mode = 1), or restore (mode = 2) the tty settings for
* stdin. Expect something like raw mode with no echo will be set up. Explicit
* code to ensure blocking reads probably isn't needed because blocksize is set
* to 1 when we're in interactive mode, but I've included it anyway.
*
*/
if ( interactive == TRUE )
switch ( mode ) {
case 0:
if ( isatty(0) != 1 )
error(FATAL, "stdin not a terminal - can't run interactive mode");
if ( ioctl(0, TCGETA, &oldtermio) == -1 )
error(FATAL, "can't save terminal settings");
saved = TRUE;
break;
case 1:
termio = oldtermio;
termio.c_lflag &= ~(ICANON | ECHO | ECHOE | ECHOK | ECHONL);
termio.c_cc[VMIN] = 1;
termio.c_cc[VTIME] = 0;
ioctl(0, TCSETA, &termio);
break;
case 2:
if ( saved == TRUE )
ioctl(0, TCSETA, &oldtermio);
break;
} /* End switch */
} /* End of setupstdin */
/*****************************************************************************/
readline()
{
int n; /* read() return value */
int ch; /* for interactive mode */
static int tries = 0; /* consecutive times read returned 0 */
/*
*
* Reads characters coming back from the printer on ttyi up to a newline (or EOF)
* or until no more characters are available. Characters are put in mesg[], the
* string is terminated with '\0' when we're done with a line and TRUE is returned
* to the caller. If complete line wasn't available FALSE is returned. Interactive
* mode should loop here forever, except during start(), echoing characters to
* stdout. If it happens to leave FALSE should be returned. The non-blocking read
* gets us out until split() is called.
*
* Some users (apparently just on 3B2 DKHOST systems) have had problems with the
* two process implementation that's forced me to kludge things up some. When a
* printer (on those systems) is turned off while postio is transmitting files
* the write process hangs in writeblock() (postio.c) - it's typically in the
* middle of a write() call, while the read() call (below) continually returns 0.
* In the original code readline() returned FALSE when read() returned 0 and we
* get into a loop that never ends - because the write process is hung. In the
* one process implementation having read return 0 is legitimate because the line
* is opened for no delay, but with two processes the read() blocks and a return
* value of 0 should never occur. From my point of view the real problem is that
* the write() call hangs on 3B2 DKHOST systems and apparently doesn't anywhere
* else. If the write returned anything less than or equal to 0 writeblock() would
* shut things down. The kludge I've implemented counts the number of consecutive
* times read() returns a 0 and if it exceeds a limit (100) the read process will
* shut things down. In fact one return of 0 from read() when we're in the two
* process mode is undoubtedly sufficient and no counting should be necessary!!!
* Moving the check to getstatus() should also work and is probably where things
* belong.
*
*/
if ( interactive == FALSE ) {
while ( (n = read(ttyi, ptr, 1)) != 0 ) {
if ( n < 0 )
if ( errno == EINTR )
continue;
else error(FATAL, "error reading %s", line);
tries = 0;
if ( *ptr == '\n' || *ptr == '\004' || ptr >= endmesg ) {
*(ptr+1) = '\0';
if ( *ptr == '\004' )
strcpy(ptr, "%%[ status: endofjob ]%%\n");
ptr = mesg;
return(TRUE);
} /* End if */
ptr++;
} /* End while */
if ( canread == TRUE && canwrite == FALSE ) /* read process kludge */
if ( ++tries > 100 )
error(FATAL, "printer appears to be offline - shutting down");
return(FALSE);
} /* End if */
if ( canwrite == TRUE ) /* don't block during start() */
return(FALSE);
while ( (ch = getc(fp_ttyi)) != EOF )
putc(ch, stdout);
return(FALSE);
} /* End of readline */
#endif
/*****************************************************************************/
#ifdef V9
#include <ipc.h>
char tbuf[256]; /* temporary input buffer */
char *nptr = tbuf; /* next character comes from here */
char *eptr = tbuf; /* one past the last character in tbuf */
setupline()
{
struct sgttyb sgtty;
struct ttydevb ttydev; /* for setting up the line */
static struct tchars tchar = { '\377', /* interrupt */
'\377', /* quit */
'\021', /* start output */
'\023', /* stop output */
'\377', /* end-of-file */
'\377' /* input delimiter */
};
/*
*
* Line initialization for V9.
*
*/
if ( line == NULL ) {
ttyi = ttyo = 1;
return;
} /* End if */
alarm(120); /* watch for hanging opens */
if ( line[0] == '/' ) {
if ( (ttyi = open(line, O_RDWR)) == -1 )
error(FATAL, "can't open %s", line);
} else if ((ttyi = ipcopen(ipcpath(line, "dk", 0), "")) < 0) {
sleep(5); /* wait for Datakit to hangup */
if ((ttyi = ipcopen(ipcpath(line, "dk", 0), "")) < 0) {
fprintf(stderr, "%s", errstr);
error(FATAL, "can't ipcopen %s", line);
}
}
alarm(0);
if ( (ttyo = dup(ttyi)) == -1 )
error(FATAL, "can't dup file descriptor for %s", line);
if ( ioctl(ttyi, FIOPUSHLD, &tty_ld) == -1 )
error(FATAL, "ioctl error - FIOPUSHLD");
if ( ioctl(ttyi, TIOCGDEV, &ttydev) == -1 )
error(FATAL, "ioctl error - TIOCGDEV");
if ( ioctl(ttyi, TIOCGETP, &sgtty) == -1 )
error(FATAL, "ioctl error - TIOCGETP");
sgtty.sg_flags &= ~ECHO;
sgtty.sg_flags &= ~CRMOD;
sgtty.sg_flags |= CBREAK;
ttydev.ispeed = baudrate;
ttydev.ospeed = baudrate;
if ( ioctl(ttyi, TIOCSDEV, &ttydev) == -1 )
error(FATAL, "ioctl error - TIOCSDEV");
if ( ioctl(ttyi, TIOCSETP, &sgtty) == -1 )
error(FATAL, "ioctl error - TIOCSETP");
if ( ioctl(ttyi, TIOCSETC, &tchar) == -1 )
error(FATAL, "ioctl error - TIOCSETC");
fp_ttyi = fdopen(ttyi, "r");
} /* End of setupline */
/*****************************************************************************/
resetline()
{
struct sgttyb sgtty;
/*
*
* Only used if we're running the program as separate read and write processes.
* Called from split() after the initial connection has been made and returns
* TRUE if two processes should work. Haven't tested or even compiled the stuff
* for separate read and write processes on Ninth Edition systems - no guarantees
* even though we return TRUE!
*
*/
if ( ioctl(ttyi, TIOCGETP, &sgtty) == -1 )
error(FATAL, "ioctl error - TIOCGETP");
sgtty.sg_flags |= TANDEM;
if ( ioctl(ttyi, TIOCSETP, &sgtty) == -1 )
error(FATAL, "ioctl error - TIOCSETP");
return(TRUE);
} /* End of resetline */
/*****************************************************************************/
setupstdin(mode)
int mode; /* what to do with stdin settings */
{
struct sgttyb sgtty;
static int saved = FALSE;
static struct sgttyb oldsgtty;
/*
*
* Save (mode = 0), reset (mode = 1), or restore (mode = 2) the tty settings for
* stdin. Expect something like raw mode with no echo will be set up. Need to make
* sure interrupt and quit still work - they're the only good way to exit when
* we're running interactive mode. I haven't tested or even compiled this code
* so there are no guarantees.
*
*/
if ( interactive == TRUE )
switch ( mode ) {
case 0:
if ( ioctl(0, TIOCGETP, &oldsgtty) == -1 )
error(FATAL, "can't save terminal settings");
saved = TRUE;
break;
case 1:
sgtty = oldsgtty;
sgtty.sg_flags &= ~ECHO;
sgtty.sg_flags |= CBREAK;
ioctl(0, TIOCSETP, &sgtty);
break;
case 2:
if ( saved == TRUE )
ioctl(0, TIOCSETP, &oldsgtty);
break;
} /* End switch */
} /* End of setupstdin */
/*****************************************************************************/
readline()
{
int n; /* read() return value */
int ch; /* for interactive mode */
/*
*
* Reads characters coming back from the printer on ttyi up to a newline (or EOF)
* and transfers each line to the mesg[] array. Everything available on ttyi is
* initially stored in tbuf[] and a line at a time is transferred from there to
* mesg[]. The string in mesg[] is terminated with a '\0' and TRUE is returned to
* the caller when we find a newline, EOF, or reach the end of the mesg[] array.
* If nothing is available on ttyi we return FALSE if a single process is being
* used for reads and writes, while in the two process implementation we force a
* one character read. Interactive mode loops here forever, except during start(),
* echoing everything that comes back on ttyi to stdout. The performance of a
* simple getc/putc loop for interactive mode was unacceptable when run under mux
* and has been replaced by more complicated code. When layers wasn't involved
* the getc/putc loop worked well.
*
*/
if ( interactive == FALSE ) {
while ( 1 ) {
while ( nptr < eptr ) { /* grab characters from tbuf */
*ptr = *nptr++;
if ( *ptr == '\r' ) continue;
if ( *ptr == '\n' || *ptr == '\004' || ptr >= endmesg ) {
*(ptr+1) = '\0';
if ( *ptr == '\004' )
strcpy(ptr, "%%[ status: endofjob ]%%\n");
ptr = mesg;
return(TRUE);
} /* End if */
++ptr;
} /* End for */
nptr = eptr = tbuf;
if ( ioctl(ttyi, FIONREAD, &n) < 0 )
if ( errno == EINTR )
continue;
else error(FATAL, "ioctl error - FIONREAD");
if ( n <= 0 )
if ( canwrite == TRUE )
return(FALSE);
n = ((n < 1) ? 1 : ((n < sizeof(tbuf)) ? n : sizeof(tbuf)));
if ( (n = read(ttyi, tbuf, n)) < 0 )
if ( errno == EINTR )
continue;
else error(FATAL, "error reading line %s", line);
else eptr = nptr + n;
} /* End while */
} /* End if */
if ( canwrite == TRUE ) /* don't block during start() */
return(FALSE);
while ( 1 ) { /* only interactive mode gets here */
if ( ioctl(ttyi, FIONREAD, &n) < 0 )
error(FATAL, "ioctl error - FIONREAD");
n = ((n < 1) ? 1 : ((n < sizeof(tbuf)) ? n : sizeof(tbuf)));
if ( (n = read(ttyi, tbuf, n)) < 0 )
error(FATAL, "error reading line %s", line);
else if ( n == 0 ) /* should not happen */
error(FATAL, "end of file in interactive mode");
if ( write(1, tbuf, n) != n )
error(FATAL, "error writing to stdout");
} /* End while */
return(FALSE);
} /* End of readline */
#endif
/*****************************************************************************/
#ifdef BSD4_2
setupline()
{
struct sgttyb sgtty;
static struct tchars tchar = { '\377', /* interrupt */
'\377', /* quit */
'\021', /* start output */
'\023', /* stop output */
'\377', /* end-of-file */
'\377' /* input delimiter */
};
long lmodes;
int disc = NTTYDISC;
/*
*
* Line initialization for BSD4_2. As in the System V code, if no line is given
* (ie. line == NULL) we continue on as before using stdout as ttyi and ttyo.
*
*/
if ( line == NULL )
ttyi = fileno(stdout);
else if ( (ttyi = open(line, O_RDWR)) == -1 )
error(FATAL, "can't open %s", line);
if ( (ttyo = dup(ttyi)) == -1 )
error(FATAL, "can't dup file descriptor for %s", line);
if (ioctl(ttyi, TIOCSETD, &disc) == -1 )
error(FATAL, "ioctl error - TIOCSETD");
if ( ioctl(ttyi, TIOCGETP, &sgtty) == -1 )
error(FATAL, "ioctl error - TIOCGETP");
if ( ioctl(ttyi, TIOCLGET, &lmodes) == -1 )
error(FATAL, "ioctl error - TIOCLGET");
sgtty.sg_flags &= ~ECHO;
sgtty.sg_flags &= ~CRMOD;
sgtty.sg_flags |= CBREAK;
sgtty.sg_ispeed = baudrate;
sgtty.sg_ospeed = baudrate;
lmodes |= LDECCTQ;
if ( ioctl(ttyi, TIOCSETP, &sgtty) == -1 )
error(FATAL, "ioctl error - TIOCSETP");
if ( ioctl(ttyi, TIOCSETC, &tchar) == -1 )
error(FATAL, "ioctl error - TIOCSETC");
if ( ioctl(ttyi, TIOCLSET, &lmodes) == -1 )
error(FATAL, "ioctl error - TIOCLSET");
fp_ttyi = fdopen(ttyi, "r");
} /* End of setupline */
/*****************************************************************************/
resetline()
{
struct sgttyb sgtty;
/*
*
* Only used if we're running the program as separate read and write processes.
* Called from split() after the initial connection has been made and returns
* TRUE if two processes should work. Haven't tested or even compiled the stuff
* for separate read and write processes on Berkeley systems - no guarantees
* even though we return TRUE!
*
*/
if ( ioctl(ttyi, TIOCGETP, &sgtty) == -1 )
error(FATAL, "ioctl error - TIOCGETP");
sgtty.sg_flags |= TANDEM;
if ( ioctl(ttyi, TIOCSETP, &sgtty) == -1 )
error(FATAL, "ioctl error - TIOCSETP");
return(TRUE);
} /* End of resetline */
/*****************************************************************************/
setupstdin(mode)
int mode; /* what to do with stdin settings */
{
struct sgttyb sgtty;
static int saved = FALSE;
static struct sgttyb oldsgtty;
/*
*
* Save (mode = 0), reset (mode = 1), or restore (mode = 2) the tty settings for
* stdin. Expect something like raw mode with no echo will be set up. Need to make
* sure interrupt and quit still work - they're the only good way to exit when
* we're running interactive mode. I haven't tested or even compiled this code
* so there are no guarantees.
*
*/
if ( interactive == TRUE )
switch ( mode ) {
case 0:
if ( isatty(0) != 1 )
error(FATAL, "stdin not a terminal - can't run interactive mode");
if ( ioctl(0, TIOCGETP, &oldsgtty) == -1 )
error(FATAL, "can't save terminal settings");
saved = TRUE;
break;
case 1:
sgtty = oldsgtty;
sgtty.sg_flags &= ~ECHO;
sgtty.sg_flags |= CBREAK;
ioctl(0, TIOCSETP, &sgtty);
break;
case 2:
if ( saved == TRUE )
ioctl(0, TIOCSETP, &oldsgtty);
break;
} /* End switch */
} /* End of setupstdin */
/*****************************************************************************/
readline()
{
int n; /* read() return value */
int ch; /* for interactive mode */
/*
*
* Reads characters coming back from the printer on ttyo up to a newline (or EOF)
* or until no more characters are available. Characters are put in mesg[], the
* string is terminated with '\0' when we're done with a line and TRUE is returned
* to the caller. If complete line wasn't available FALSE is returned. Interactive
* mode should loop here forever, except during start(), echoing characters to
* stdout. If it happens to leave FALSE should be returned. Probably should read
* everything available on ttyi into a temporary buffer and work from there rather
* than reading one character at a time.
*
*/
if ( interactive == FALSE ) {
while ( 1 ) {
if ( ioctl(ttyi, FIONREAD, &n) < 0 )
if ( errno == EINTR )
continue;
else error(FATAL, "ioctl error - FIONREAD");
if ( n <= 0 )
if ( canwrite == TRUE )
return(FALSE);
else n = 1;
for ( ; n > 0; n-- ) {
/*if ( read(ttyi, ptr, 1) < 0 )*/
if ( (*ptr = getc(fp_ttyi)) == EOF )
if ( errno == EINTR )
continue;
else error(FATAL, "error reading %s", line);
if ( *ptr == '\r' ) continue;
if ( *ptr == '\n' || *ptr == '\004' || ptr >= endmesg ) {
*(ptr+1) = '\0';
if ( *ptr == '\004' )
strcpy(ptr, "%%[ status: endofjob ]%%\n");
ptr = mesg;
return(TRUE);
} /* End if */
++ptr;
} /* End for */
} /* End while */
} /* End if */
if ( canwrite == TRUE ) /* don't block during start() */
return(FALSE);
while ( (ch = getc(fp_ttyi)) != EOF )
putc(ch, stdout);
return(FALSE);
} /* End of readline */
/*****************************************************************************/
/* @(#)strspn.c 1.2 */
/*LINTLIBRARY*/
/*
* Return the number of characters in the maximum leading segment
* of string which consists solely of characters from charset.
*/
int
strspn(string, charset)
char *string;
register char *charset;
{
register char *p, *q;
for(q=string; *q != '\0'; ++q) {
for(p=charset; *p != '\0' && *p != *q; ++p)
;
if(*p == '\0')
break;
}
return(q-string);
}
/* @(#)strpbrk.c 1.2 */
/*LINTLIBRARY*/
/*
* Return ptr to first occurance of any character from `brkset'
* in the character string `string'; NULL if none exists.
*/
char *
strpbrk(string, brkset)
register char *string, *brkset;
{
register char *p;
do {
for(p=brkset; *p != '\0' && *p != *string; ++p)
;
if(*p != '\0')
return(string);
}
while(*string++);
return((char*)0);
}
/* @(#)strtok.c 1.2 */
/* 3.0 SID # 1.2 */
/*LINTLIBRARY*/
/*
* uses strpbrk and strspn to break string into tokens on
* sequentially subsequent calls. returns NULL when no
* non-separator characters remain.
* `subsequent' calls are calls with first argument NULL.
*/
extern int strspn();
extern char *strpbrk();
char *
strtok(string, sepset)
char *string, *sepset;
{
register char *p, *q, *r;
static char *savept;
/*first or subsequent call*/
p = (string == (char*)0)? savept: string;
if(p == 0) /* return if no tokens remaining */
return((char*)0);
q = p + strspn(p, sepset); /* skip leading separators */
if(*q == '\0') /* return if no tokens remaining */
return((char*)0);
if((r = strpbrk(q, sepset)) == (char*)0) /* move past token */
savept = 0; /* indicate this is last token */
else {
*r = '\0';
savept = ++r;
}
return(q);
}
#endif
/*****************************************************************************/
#ifdef DKHOST
#ifndef DKSTREAMS
short dkrmode[3] = {DKR_TIME, 0, 0};
#endif
dkhost_connect()
{
int ofd; /* for saving and restoring stderr */
int dfd;
int retrytime = 5;
/*
*
* Tries to connect to a Datakit destination. The extra stuff I've added to save
* and later restore stderr is primarily for our spooling setup at Murray Hill.
* postio is usually called with stderr directed to a file that will be returned
* to the user when the job finishes printing. Problems encountered by dkdial(),
* like busy messages, go to stderr but don't belong in the user's mail. They'll
* be temporarily directed to the log file. After we've connected stderr will be
* restored.
*
*/
if ( *line == '\0' )
error(FATAL, "incomplete Datakit line");
if ( fp_log != NULL && fp_log != stderr ) { /* redirect dkdial errors */
ofd = dup(2);
close(2);
dup(fileno(fp_log));
} /* End if */
while ( (dfd = ttyi = dkdial(line)) < 0 ) {
if ( retrytime < 0 )
error(FATAL, "can't connect to %s", line);
sleep(retrytime++);
if ( retrytime > 60 )
retrytime = 60;
} /* End while */
if ( fp_log != NULL && fp_log != stderr ) { /* restore stderr */
close(2);
dup(ofd);
close(ofd);
} /* End if */
#ifndef DKSTREAMS
if ( ioctl(ttyi, DIOCRMODE, dkrmode) == -1 )
error(FATAL, "ioctl error - DIOCRMODE");
#ifdef DIOURPWD
if ( window_size > 0 ) {
short dkparm[3];
dkparm[0] = dkminor(ttyi);
dkparm[1] = 1;
dkparm[2] = window_size;
if ( ioctl(ttyi, DIOURPWD, dkparm) < 0 || ioctl(ttyi, DIOCFLUSH, 0) < 0 )
error(NON_FATAL, "WSA failed");
} /* End if */
#endif
line = dtnamer(dkminor(ttyi));
if ( (ttyi = open(line, O_RDWR)) == -1 )
error(FATAL, "can't open %s", line);
close(dfd);
#endif
} /* End of dkhost_connect */
#endif
/*****************************************************************************/