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printer.c
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/* PRINTER.C (c) Copyright Roger Bowler, 1999-2012 */
/* (c) Copyright Enrico Sorichetti, 2012 */
/* ESA/390 Line Printer Device Handler */
/* */
/* Released under "The Q Public License Version 1" */
/* (http://www.hercules-390.org/herclic.html) as modifications to */
/* Hercules. */
/*-------------------------------------------------------------------*/
/* This module contains device handling functions for emulated */
/* System/370 line printer devices with fcb support and more */
/*-------------------------------------------------------------------*/
#include "hstdinc.h"
#include "hercules.h"
#include "devtype.h"
#include "opcode.h"
/*-------------------------------------------------------------------*/
/* Ivan Warren 20040227 */
/* */
/* This table is used by channel.c to determine if a CCW code */
/* is an immediate command or not. */
/* */
/* The table is addressed in the DEVHND structure as 'DEVIMM immed' */
/* */
/* 0: ("false") Command is *NOT* an immediate command */
/* 1: ("true") Command *IS* an immediate command */
/* */
/* Note: An immediate command is defined as a command which returns */
/* CE (channel end) during initialization (that is, no data is */
/* actually transfered). In this case, IL is not indicated for a */
/* Format 0 or Format 1 CCW when IL Suppression Mode is in effect. */
/* */
/*-------------------------------------------------------------------*/
/* Printer Specific : 1403 */
/* The following are considered IMMEDIATE commands : */
/* CTL-NOOP, Skip Channel 'n' Immediate, Block Data check , Allow Data Check
* Space 1,2,3 Lines Immediate, UCS Gate Load, Load UCS Buffer & Fold,
* Load UCS Buffer (No Fold)
*/
static BYTE printer_immed_commands[256]=
/*
*0 1 2 3 4 5 6 7 8 9 A B C D E F
*/
{ 0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,
0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,
0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,
0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,
0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,
0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,
0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,
0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,
0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,
0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0};
/*-------------------------------------------------------------------*/
/* Internal macro definitions */
/*-------------------------------------------------------------------*/
//#define LINE_LENGTH 150
#define BUFF_SIZE 1500
#define BUFF_OVFL 150
int line;
int coun;
int chan;
int FCBMASK[] = {66,1,7,13,19,25,31,37,43,63,49,55,61};
int havechan;
#define LINENUM(n) ( 1 + ( ( (n)-1) % dev->lpp))
#define WRITE_LINE() \
do { \
/* Start a new record if not data-chained from previous CCW */ \
if ((chained & CCW_FLAGS_CD) == 0) \
{ \
dev->bufoff = 0; \
dev->bufres = BUFF_SIZE; \
} /* end if(!data-chained) */ \
if ( dev->index > 1 ) \
{ \
for (i = 1; i < (U32)dev->index; i++) \
{ \
dev->buf[dev->bufoff] = SPACE; \
dev->bufoff++; \
dev->bufres--; \
} /* end for(i) */ \
} /* end if ( dev->index > 1 ) */ \
/* Calculate number of bytes to write and set residual count */ \
num = (count < (U32)dev->bufres) ? count : (U32)dev->bufres; \
*residual = count - num; \
/* Copy data from channel buffer to print buffer */ \
for (i = 0; i < num; i++) \
{ \
c = guest_to_host(iobuf[i]); \
if (dev->fold) c = toupper(c); \
if (c == 0) c = SPACE; \
dev->buf[dev->bufoff] = c; \
dev->bufoff++; \
dev->bufres--; \
} /* end for(i) */ \
/* Perform end of record processing if not data-chaining */ \
if ((flags & CCW_FLAGS_CD) == 0) \
{ \
/* Truncate trailing blanks from print line */ \
for (i = dev->bufoff; i > 0; i--) \
if (dev->buf[i-1] != SPACE) break; \
/* Write print line */ \
write_buffer (dev, (char *)dev->buf, i, unitstat); \
if (*unitstat != 0) return; \
if ( dev->crlf ) \
{ \
write_buffer (dev, "\r", 1, unitstat); \
if (*unitstat != 0) return; \
} \
} /* end if(!data-chaining) */ \
/* Return normal status */ \
} while(0)
/* changed to */
/* search the fcb array starting at the CURRENT line position */
/* check if the previous operation was a write no space */
#define SKIP_TO_CHAN() \
do { \
havechan = 0; \
for ( i = 0; i < (U32)dev->lpp; i++ ) \
{ \
line = LINENUM( dev->currline + i ); \
if ( dev->fcb[line] != chan ) \
continue; \
havechan = 1; \
dev->destline = line; \
break; \
} \
if ( havechan == 1 ) \
{ \
if ( ( dev->destline < dev->currline ) || \
( dev->chskip == 1 && dev->destline <= dev->currline ) ) \
{ \
dev->chskip = 0; \
write_buffer (dev, "\f", 1, unitstat); \
if (*unitstat != 0) return; \
dev->currline = 1; \
} \
for (; dev->currline < dev->destline; dev->currline++ ) \
{ \
write_buffer (dev, "\n", 1, unitstat); \
if (*unitstat != 0) return; \
} \
*unitstat = CSW_CE | CSW_DE; \
return; \
} \
/* channel not found */ \
{ \
if ( dev->nofcbcheck ) \
{ \
if ( ( code & 0x02 ) != 0 ) \
{ \
write_buffer (dev, "\n", 1, unitstat); \
if (*unitstat != 0) return; \
} \
} \
else \
{ \
dev->sense[0] = (dev->devtype == 0x1403 ) ? SENSE_EC :SENSE_EC; \
*unitstat = CSW_CE | CSW_DE | CSW_UC; \
return; \
} \
} \
} while (0)
static void* spthread ( void* dev ); /* (forward reference) */
/*-------------------------------------------------------------------*/
/* Dump the FCB info */
/*-------------------------------------------------------------------*/
static void fcb_dump(DEVBLK* dev, char *buf, unsigned int buflen)
{
int i;
char wrk[16];
char sep[1];
sep[0] = '=';
snprintf(buf, buflen-1, "LOADED lpi=%d index=%d lpp=%d fcb", dev->lpi, dev->index, dev->lpp );
for (i = 1; i <= dev->lpp; i++)
{
if (dev->fcb[i] != 0)
{
MSGBUF( wrk, "%c%d:%d",sep[0], i, dev->fcb[i]);
sep[0] = ',';
if (strlen(buf) + strlen(wrk) >= buflen - 4)
{
/* Too long, truncate it */
strlcat(buf, ",...", buflen);
return;
}
strlcat(buf, wrk, buflen);
}
}
return;
}
/*-------------------------------------------------------------------*/
/* Sockdev "OnConnection" callback function */
/*-------------------------------------------------------------------*/
static int onconnect_callback (DEVBLK* dev)
{
TID tid;
int rc;
rc = create_thread( &tid, DETACHED, spthread, dev, NULL );
if(rc)
{
WRMSG( HHC00102, "E", strerror( rc ) );
return 0;
}
return 1;
}
/*-------------------------------------------------------------------*/
/* Thread to monitor the sockdev remote print spooler connection */
/*-------------------------------------------------------------------*/
static void* spthread (void* arg)
{
DEVBLK* dev = (DEVBLK*) arg;
BYTE byte;
fd_set readset, errorset;
struct timeval tv;
int rc, fd = dev->fd; // (save original fd)
/* Fix thread name */
{
char thread_name[32];
thread_name[sizeof(thread_name)-1] = 0;
snprintf( thread_name, sizeof(thread_name)-1,
"spthread %1d:%04X", SSID_TO_LCSS(dev->ssid), dev->devnum );
SET_THREAD_NAME( thread_name );
}
// Looooop... until shutdown or disconnect...
// PROGRAMMING NOTE: we do our select specifying an immediate
// timeout to prevent our select from holding up (slowing down)
// the device thread (which does the actual writing of data to
// the client). The only purpose for our thread even existing
// is to detect a severed connection (i.e. to detect when the
// client disconnects)...
while ( !sysblk.shutdown && dev->fd == fd )
{
if (dev->busy)
{
SLEEP(3);
continue;
}
FD_ZERO( &readset );
FD_ZERO( &errorset );
FD_SET( fd, &readset );
FD_SET( fd, &errorset );
tv.tv_sec = 0;
tv.tv_usec = 0;
rc = select( fd+1, &readset, NULL, &errorset, &tv );
if (rc < 0)
break;
if (rc == 0)
{
SLEEP(3);
continue;
}
if (FD_ISSET( fd, &errorset ))
break;
// Read and ignore any data they send us...
// Note: recv should complete immediately
// as we know data is waiting to be read.
ASSERT( FD_ISSET( fd, &readset ) );
rc = recv( fd, &byte, sizeof(byte), 0 );
if (rc <= 0)
break;
}
obtain_lock( &dev->lock );
// PROGRAMMING NOTE: the following tells us whether we detected
// the error or if the device thread already did. If the device
// thread detected it while we were sleeping (and subsequently
// closed the connection) then we don't need to do anything at
// all; just exit. If we were the ones that detected the error
// however, then we need to close the connection so the device
// thread can learn of it...
if (dev->fd == fd)
{
dev->fd = -1;
close_socket( fd );
WRMSG (HHC01100, "I", SSID_TO_LCSS(dev->ssid), dev->devnum,
dev->bs->clientname, dev->bs->clientip, dev->bs->spec);
}
release_lock( &dev->lock );
return NULL;
} /* end function spthread */
/*-------------------------------------------------------------------*/
/* Initialize the device handler */
/*-------------------------------------------------------------------*/
static int printer_init_handler (DEVBLK *dev, int argc, char *argv[])
{
int iarg,i,j; /* some Array subscripts */
char *ptr;
char *nxt;
int sockdev = 0; /* 1 == is socket device */
/* For re-initialisation, close the existing file, if any, and raise attention */
if (dev->fd >= 0)
{
(dev->hnd->close)(dev);
release_lock (&dev->lock);
device_attention (dev, CSW_DE);
obtain_lock (&dev->lock);
}
dev->excps = 0;
/* Forcibly disconnect anyone already currently connected */
if (dev->bs && !unbind_device_ex(dev,1))
return -1; // (error msg already issued)
/* The first argument is the file name */
if (argc == 0 || strlen(argv[0]) >= sizeof(dev->filename))
{
WRMSG (HHC01101, "E", SSID_TO_LCSS(dev->ssid), dev->devnum);
return -1;
}
/* Save the file name in the device block */
hostpath(dev->filename, argv[0], sizeof(dev->filename));
if(!sscanf(dev->typname,"%hx",&(dev->devtype)))
dev->devtype = 0x3211;
/* Initialize device dependent fields */
dev->fd = -1;
dev->diaggate = 0;
dev->fold = 0;
dev->crlf = 0;
dev->stopdev = FALSE;
dev->notrunc = 0;
dev->ispiped = (dev->filename[0] == '|');
/* initialize the new fields for FCB+ support */
dev->fcbsupp = 1;
dev->cc = 0;
dev->rawcc = 0;
dev->fcbcheck = 1;
dev->nofcbcheck = 0;
dev->ccpend = 0;
dev->chskip = 0;
dev->prevline = 1;
dev->currline = 1;
dev->destline = 1;
dev->print = 1;
dev->browse = 0;
dev->lpi = 6;
dev->index = 0;
dev->ffchan = 1;
for (i = 0; i < FCBSIZE; i++) dev->fcb[i] = 0;
for (i = 1; i <= 12; i++ )
{
if ( FCBMASK[i] != 0 )
dev->fcb[FCBMASK[i]] = i;
}
dev->lpp = FCBMASK[0];
dev->fcbisdef = 0;
/* Process the driver arguments */
for (iarg = 1; iarg < argc; iarg++)
{
if (strcasecmp(argv[iarg], "crlf") == 0)
{
dev->crlf = 1;
continue;
}
/* sockdev means the device file is actually
a connected socket instead of a disk file.
The file name is the socket_spec (host:port)
to listen for connections on.
*/
if (!dev->ispiped && strcasecmp(argv[iarg], "sockdev") == 0)
{
sockdev = 1;
continue;
}
if (strcasecmp(argv[iarg], "noclear") == 0)
{
dev->notrunc = 1;
continue;
}
if (strcasecmp(argv[iarg], "cc") == 0)
{
dev->cc = 1;
dev->rawcc = 0;
continue;
}
if (strcasecmp(argv[iarg], "rawcc") == 0)
{
dev->cc = 0;
dev->rawcc = 1;
continue;
}
if (strcasecmp(argv[iarg], "nofcbcheck") == 0)
{
dev->fcbcheck = 0;
dev->nofcbcheck = 1;
continue;
}
if (strcasecmp(argv[iarg], "fcbcheck") == 0)
{
dev->fcbcheck = 1;
dev->nofcbcheck = 0;
continue;
}
if ( (strcasecmp(argv[iarg], "browse") == 0) ||
(strcasecmp(argv[iarg], "optbrowse") == 0 ) )
{
dev->print = 0;
dev->browse = 1;
continue;
}
if ( (strcasecmp(argv[iarg], "print") == 0 ) ||
(strcasecmp(argv[iarg], "optprint") == 0) )
{
dev->print = 1;
dev->browse = 0;
continue;
}
if (strncasecmp("lpi=", argv[iarg], 4) == 0)
{
ptr = argv[iarg]+4;
errno = 0;
dev->lpi = (int) strtoul(ptr,&nxt,10);
if (errno != 0 || nxt == ptr || *nxt != 0 || ( dev->lpi != 6 && dev->lpi != 8 ) )
{
j = ptr - argv[iarg];
WRMSG (HHC01103, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg], j);
return -1;
}
continue;
}
if (strncasecmp("index=", argv[iarg], 6) == 0)
{
if (dev->devtype != 0x3211 )
{
WRMSG (HHC01103, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg], 1);
return -1;
}
ptr = argv[iarg]+6;
errno = 0;
dev->index = (int) strtoul(ptr,&nxt,10);
if (errno != 0 || nxt == ptr || *nxt != 0 || ( dev->index < 0 || dev->index > 15) )
{
j = ptr - argv[iarg];
WRMSG (HHC01103, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg], j);
return -1;
}
continue;
}
if (strncasecmp("lpp=", argv[iarg], 4) == 0)
{
ptr = argv[iarg]+4;
errno = 0;
dev->lpp = (int) strtoul(ptr,&nxt,10);
if (errno != 0 || nxt == ptr || *nxt != 0 ||dev->lpp > FCBSIZE)
{
j = ptr - argv[iarg];
WRMSG (HHC01103, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg], j);
return -1;
}
continue;
}
#if 0
if (strncasecmp("ffchan=", argv[iarg], 7) == 0)
{
ptr = argv[iarg]+7;
errno = 0;
dev->ffchan = (int) strtoul(ptr,&nxt,10);
if (errno != 0 || nxt == ptr || *nxt != 0 || dev->ffchan < 1 || dev->ffchan > 12)
{
j = ptr - argv[iarg];
WRMSG (HHC01103, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg], j);
return -1;
}
continue;
}
#endif
if (strncasecmp("fcb=", argv[iarg], 4) == 0)
{
for (line = 0; line <= FCBSIZE; line++) dev->fcb[line] = 0;
/* check for simple mode */
if ( strstr(argv[iarg],":") )
{
/* ':" found ==> new mode */
ptr = argv[iarg]+4;
while (*ptr)
{
errno = 0;
line = (int) strtoul(ptr,&nxt,10);
if (errno != 0 || *nxt != ':' || nxt == ptr || line > dev->lpp || dev->fcb[line] != 0 )
{
j = ptr - argv[iarg];
WRMSG (HHC01103, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg], j);
return -1;
}
ptr = nxt + 1;
errno = 0;
chan = (int) strtoul(ptr,&nxt,10);
if (errno != 0 || (*nxt != ',' && *nxt != 0) || nxt == ptr || chan < 1 || chan > 12 )
{
j = ptr - argv[iarg];
WRMSG (HHC01103, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg], j);
return -1;
}
dev->fcb[line] = chan;
if ( *nxt == 0 )
break;
ptr = nxt + 1;
}
}
else
{
/* ':" NOT found ==> old mode */
ptr = argv[iarg]+4;
chan = 0;
while (*ptr)
{
errno = 0;
line = (int) strtoul(ptr,&nxt,10);
if (errno != 0 || (*nxt != ',' && *nxt != 0) || nxt == ptr || line > dev->lpp || dev->fcb[line] != 0 )
{
j = ptr - argv[iarg];
WRMSG (HHC01103, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg], j);
return -1;
}
chan += 1;
if ( chan > 12 )
{
j = ptr - argv[iarg];
WRMSG (HHC01103, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg], j);
return -1;
}
dev->fcb[line] = chan;
if ( *nxt == 0 )
break;
ptr = nxt + 1;
}
if ( chan != 12 )
{
j = 5;
WRMSG (HHC01103, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg], j);
return -1;
}
}
continue;
}
WRMSG (HHC01102, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, iarg + 1, argv[iarg]);
return -1;
}
/* Check for incompatible options */
if (dev->rawcc && dev->browse)
{
WRMSG (HHC01104, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "rawcc/browse");
return -1;
}
if (sockdev && dev->crlf)
{
WRMSG (HHC01104, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "sockdev/crlf");
return -1;
}
if (sockdev && dev->notrunc)
{
WRMSG (HHC01104, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "sockdev/noclear");
return -1;
}
/* If socket device, create a listening socket
to accept connections on.
*/
if (sockdev && !bind_device_ex( dev,
dev->filename, onconnect_callback, dev ))
{
return -1; // (error msg already issued)
}
/* Set length of print buffer */
// dev->bufsize = LINE_LENGTH + 8;
dev->bufsize = BUFF_SIZE + BUFF_OVFL;
dev->bufres = BUFF_SIZE;
dev->bufoff = 0;
/* Set number of sense bytes */
dev->numsense = 1;
/* Initialize the device identifier bytes */
dev->devid[0] = 0xFF;
dev->devid[1] = 0x28; /* Control unit type is 2821-1 */
dev->devid[2] = 0x21;
dev->devid[3] = 0x01;
dev->devid[4] = dev->devtype >> 8;
dev->devid[5] = dev->devtype & 0xFF;
dev->devid[6] = 0x01;
dev->numdevid = 7;
/* Activate I/O tracing */
// dev->ccwtrace = 1;
return 0;
} /* end function printer_init_handler */
/*-------------------------------------------------------------------*/
/* Query the device definition */
/*-------------------------------------------------------------------*/
static void printer_query_device (DEVBLK *dev, char **devclass,
int buflen, char *buffer)
{
BEGIN_DEVICE_CLASS_QUERY( "PRT", dev, devclass, buflen, buffer );
snprintf (buffer, buflen-1, "%s%s%s%s%s%s%s IO[%"PRIu64"]",
dev->filename,
(dev->bs ? " sockdev" : ""),
(dev->crlf ? " crlf" : ""),
(dev->notrunc ? " noclear" : ""),
(dev->rawcc ? " rawcc" : dev->browse ? " brwse" : " print"),
(dev->nofcbcheck ? " nofcbck" : " fcbck"),
(dev->stopdev ? " (stopped)" : ""),
dev->excps );
} /* end function printer_query_device */
/*-------------------------------------------------------------------*/
/* Subroutine to open the printer file or pipe */
/*-------------------------------------------------------------------*/
static int
open_printer (DEVBLK *dev)
{
pid_t pid; /* Child process identifier */
int open_flags; /* File open flags */
#if !defined( _MSVC_ )
int pipefd[2]; /* Pipe descriptors */
int rc; /* Return code */
#endif
/* Regular open if 1st char of filename is not vertical bar */
if (!dev->ispiped)
{
int fd;
/* Socket printer? */
if (dev->bs)
return (dev->fd < 0 ? -1 : 0);
/* Normal printer */
open_flags = O_BINARY | O_WRONLY | O_CREAT /* | O_SYNC */;
if (dev->notrunc != 1)
{
open_flags |= O_TRUNC;
}
fd = HOPEN (dev->filename, open_flags,
S_IRUSR | S_IWUSR | S_IRGRP);
if (fd < 0)
{
WRMSG (HHC01105, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "open()", strerror(errno));
return -1;
}
/* Save file descriptor in device block and return */
dev->fd = fd;
return 0;
}
/* Filename is in format |xxx, set up pipe to program xxx */
#if defined( _MSVC_ )
/* "Poor man's" fork... */
pid = w32_poor_mans_fork ( dev->filename+1, &dev->fd );
if (pid < 0)
{
WRMSG (HHC01105, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "fork()", strerror(errno));
return -1;
}
/* Log start of child process */
WRMSG (HHC01106, "I", SSID_TO_LCSS(dev->ssid), dev->devnum, pid);
dev->ptpcpid = pid;
#else /* !defined( _MSVC_ ) */
/* Create a pipe */
rc = create_pipe (pipefd);
if (rc < 0)
{
WRMSG (HHC01105, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "create_pipe()", strerror(errno));
return -1;
}
/* Fork a child process to receive the pipe data */
pid = fork();
if (pid < 0)
{
WRMSG (HHC01005, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "fork()", strerror(errno));
close_pipe ( pipefd[0] );
close_pipe ( pipefd[1] );
return -1;
}
/* The child process executes the pipe receiver program... */
if (pid == 0)
{
/* Log start of child process */
WRMSG (HHC01106, "I", SSID_TO_LCSS(dev->ssid), dev->devnum, getpid());
/* Close the write end of the pipe */
close_pipe ( pipefd[1] );
/* Duplicate the read end of the pipe onto STDIN */
if (pipefd[0] != STDIN_FILENO)
{
rc = dup2 (pipefd[0], STDIN_FILENO);
if (rc != STDIN_FILENO)
{
WRMSG (HHC01105, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "dup2()", strerror(errno));
close_pipe ( pipefd[0] );
_exit(127);
}
} /* end if(pipefd[0] != STDIN_FILENO) */
/* Close the original descriptor now duplicated to STDIN */
close_pipe ( pipefd[0] );
/* Redirect stderr (screen) to hercules log task */
dup2(STDOUT_FILENO, STDERR_FILENO);
/* Relinquish any ROOT authority before calling shell */
SETMODE(TERM);
/* Execute the specified pipe receiver program */
rc = system (dev->filename+1);
if (rc == 0)
{
/* Log end of child process */
WRMSG (HHC01107, "I", SSID_TO_LCSS(dev->ssid), dev->devnum, getpid());
}
else
{
/* Log error */
WRMSG (HHC01108, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->filename+1, strerror(errno));
}
/* The child process terminates using _exit instead of exit
to avoid invoking the panel atexit cleanup routine */
_exit(rc);
} /* end if(pid==0) */
/* The parent process continues as the pipe sender */
/* Close the read end of the pipe */
close_pipe ( pipefd[0] );
/* Save pipe write descriptor in the device block */
dev->fd = pipefd[1];
dev->ptpcpid = pid;
#endif /* defined( _MSVC_ ) */
return 0;
} /* end function open_printer */
/*-------------------------------------------------------------------*/
/* Subroutine to write data to the printer */
/*-------------------------------------------------------------------*/
static void
write_buffer (DEVBLK *dev, char *buf, int len, BYTE *unitstat)
{
int rc; /* Return code */
/* Write data to the printer file */
if (dev->bs)
{
/* (socket printer) */
rc = write_socket (dev->fd, buf, len);
/* Check for socket error */
if (rc < len)
{
/* Close the connection */
if (dev->fd != -1)
{
int fd = dev->fd;
dev->fd = -1;
close_socket( fd );
WRMSG (HHC01100, "I", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->bs->clientname, dev->bs->clientip, dev->bs->spec);
}
/* Set unit check with intervention required */
dev->sense[0] = SENSE_IR;
*unitstat = CSW_CE | CSW_DE | CSW_UC;
}
}
else
{
/* Write data to the printer file */
rc = write (dev->fd, buf, len);
/* Equipment check if error writing to printer file */
if (rc < len)
{
WRMSG (HHC01105, "E", SSID_TO_LCSS(dev->ssid), dev->devnum, "write()",
rc < 0 ? strerror(errno) : "incomplete record written");
dev->sense[0] = SENSE_EC;
*unitstat = CSW_CE | CSW_DE | CSW_UC;
}
}
} /* end function write_buffer */
/*-------------------------------------------------------------------*/
/* Close the device */
/*-------------------------------------------------------------------*/
static int printer_close_device ( DEVBLK *dev )
{
int fd = dev->fd;
if (fd == -1)
return 0;
dev->fd = -1;
dev->stopdev = FALSE;
/* Close the device file */
if ( dev->ispiped )
{
#if !defined( _MSVC_ )
close_pipe (fd);
#else /* defined( _MSVC_ ) */
close (fd);
/* Log end of child process */
WRMSG (HHC01107, "I", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->ptpcpid);
#endif /* defined( _MSVC_ ) */
dev->ptpcpid = 0;
}
else
{
if (dev->bs)
{
/* Socket printer */
close_socket (fd);
WRMSG (HHC01100, "I", SSID_TO_LCSS(dev->ssid), dev->devnum, dev->bs->clientname, dev->bs->clientip, dev->bs->spec);
}
else
{
/* Regular printer */
close (fd);
}
}
return 0;
} /* end function printer_close_device */
/*-------------------------------------------------------------------*/
/* Execute a Channel Command Word */
/*-------------------------------------------------------------------*/
static void printer_execute_ccw (DEVBLK *dev, BYTE code, BYTE flags,
BYTE chained, U32 count, BYTE prevcode, int ccwseq,
BYTE *iobuf, BYTE *more, BYTE *unitstat, U32 *residual)
{
int rc = 0; /* Return code */
U32 i; /* Loop counter */
U32 num; /* Number of bytes to move */
char *eor; /* -> end of record string */
char *nls = "\n\n\n"; /* -> new lines */
BYTE c; /* Print character */
char hex[3]; /* for hex conversion */
char wbuf[150];
/* Reset flags at start of CCW chain */
if (chained == 0)
{
dev->diaggate = 0;
}
/* Open the device file if necessary */
if (dev->fd < 0 && !IS_CCW_SENSE(code))
rc = open_printer (dev);
else
{
/* If printer stopped, return intervention required */
if (dev->stopdev && !IS_CCW_SENSE(code))
rc = -1;
else
rc = 0;
}
if (rc < 0)
{
/* Set unit check with intervention required */
dev->sense[0] = SENSE_IR;
*unitstat = CSW_UC;
return;
}
/* Process depending on CCW opcode */
switch (code) {
case 0x01: /* Write No Space */
case 0x09: /* Write and Space 1 Line */
case 0x11: /* Write and Space 2 Lines */
case 0x19: /* Write and Space 3 Lines */
case 0x89: /* Write and Skip to Channel 1 */
case 0x91: /* Write and Skip to Channel 2 */
case 0x99: /* Write and Skip to Channel 3 */
case 0xA1: /* Write and Skip to Channel 4 */
case 0xA9: /* Write and Skip to Channel 5 */
case 0xB1: /* Write and Skip to Channel 6 */
case 0xB9: /* Write and Skip to Channel 7 */
case 0xC1: /* Write and Skip to Channel 8 */
case 0xC9: /* Write and Skip to Channel 9 */
case 0xD1: /* Write and Skip to Channel 10 */
case 0xD9: /* Write and Skip to Channel 11 */
case 0xE1: /* Write and Skip to Channel 12 */
if (dev->rawcc)
{
sprintf(hex,"%02x",code);
write_buffer(dev, hex, 2, unitstat);
if (*unitstat != 0) return;
WRITE_LINE();
write_buffer(dev, "\n", 1, unitstat);
if (*unitstat == 0)
*unitstat = CSW_CE | CSW_DE;
return;
}
if ( dev->browse && dev->ccpend && ((chained & CCW_FLAGS_CD) == 0) )
{
dev->ccpend = 0;
/* dev->currline++; */
write_buffer(dev, "\n", 1, unitstat);
if (*unitstat != 0) return;
}
WRITE_LINE();
if ((flags & CCW_FLAGS_CD) == 0)
{