/*
* IBM/3270 Driver -- Copyright (C) 2000, 2001 UTS Global LLC
*
* tubtty.c -- Linemode tty driver
*
*
*
*
*
* Author: Richard Hitt
*/
#include <linux/config.h>
#include "tubio.h"
/* Initialization & uninitialization for tubtty */
int tty3270_init(void);
void tty3270_fini(void);
/* Interface routines from the upper tty layer to the tty driver */
static int tty3270_open(struct tty_struct *, struct file *);
static void tty3270_close(struct tty_struct *, struct file *);
static int tty3270_write(struct tty_struct *, int,
const unsigned char *, int);
static void tty3270_put_char(struct tty_struct *, unsigned char);
static void tty3270_flush_chars(struct tty_struct *);
static int tty3270_write_room(struct tty_struct *);
static int tty3270_chars_in_buffer(struct tty_struct *);
static int tty3270_ioctl(struct tty_struct *, struct file *,
unsigned int cmd, unsigned long arg);
static void tty3270_set_termios(struct tty_struct *, struct termios *);
static void tty3270_hangup(struct tty_struct *);
static void tty3270_flush_buffer(struct tty_struct *);
static int tty3270_read_proc(char *, char **, off_t, int, int *, void *);
static int tty3270_write_proc(struct file *, const char *,
unsigned long, void *);
/* tty3270 utility functions */
static void tty3270_bh(void *);
void tty3270_sched_bh(tub_t *);
static int tty3270_wait(tub_t *, long *);
void tty3270_int(tub_t *, devstat_t *);
int tty3270_try_logging(tub_t *);
static void tty3270_start_input(tub_t *);
static void tty3270_do_input(tub_t *);
static void tty3270_do_enter(tub_t *, char *, int);
static void tty3270_do_showi(tub_t *, char *, int);
int tty3270_io(tub_t *);
static int tty3270_show_tube(int, char *, int);
int tty3270_major = -1;
struct tty_driver tty3270_driver;
int tty3270_refcount;
struct tty_struct *tty3270_table[TUBMAXMINS];
struct termios *tty3270_termios[TUBMAXMINS];
struct termios *tty3270_termios_locked[TUBMAXMINS];
#ifdef CONFIG_TN3270_CONSOLE
int con3270_major = -1;
struct tty_driver con3270_driver;
int con3270_refcount;
struct tty_struct *con3270_table[1];
struct termios *con3270_termios[1];
struct termios *con3270_termios_locked[1];
#endif /* CONFIG_TN3270_CONSOLE */
int tty3270_proc_index;
int tty3270_proc_data;
int tty3270_proc_misc;
enum tubwhat tty3270_proc_what;
/*
* tty3270_init() -- Register the tty3270 driver
*/
int
tty3270_init(void)
{
struct tty_driver *td = &tty3270_driver;
int rc;
/* Initialize for tty driver */
td->magic = TTY_DRIVER_MAGIC;
td->driver_name = "tty3270";
td->name = "tty3270";
td->major = IBM_TTY3270_MAJOR;
td->minor_start = 0;
td->num = TUBMAXMINS;
td->type = TTY_DRIVER_TYPE_SYSTEM;
td->subtype = SYSTEM_TYPE_TTY;
td->init_termios = tty_std_termios;
td->flags = TTY_DRIVER_RESET_TERMIOS;
#ifdef CONFIG_DEVFS_FS
td->flags |= TTY_DRIVER_NO_DEVFS;
#endif
td->refcount = &tty3270_refcount;
td->table = tty3270_table;
td->termios = tty3270_termios;
td->termios_locked = tty3270_termios_locked;
td->open = tty3270_open;
td->close = tty3270_close;
td->write = tty3270_write;
td->put_char = tty3270_put_char;
td->flush_chars = tty3270_flush_chars;
td->write_room = tty3270_write_room;
td->chars_in_buffer = tty3270_chars_in_buffer;
td->ioctl = tty3270_ioctl;
td->ioctl = NULL;
td->set_termios = tty3270_set_termios;
td->throttle = NULL;
td->unthrottle = NULL;
td->stop = NULL;
td->start = NULL;
td->hangup = tty3270_hangup;
td->break_ctl = NULL;
td->flush_buffer = tty3270_flush_buffer;
td->set_ldisc = NULL;
td->wait_until_sent = NULL;
td->send_xchar = NULL;
td->read_proc = tty3270_read_proc;
td->write_proc = tty3270_write_proc;
rc = tty_register_driver(td);
if (rc) {
printk(KERN_ERR "tty3270 registration failed with %d\n", rc);
} else {
tty3270_major = IBM_TTY3270_MAJOR;
if (td->proc_entry != NULL)
td->proc_entry->mode = S_IRUGO | S_IWUGO;
}
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0))
#ifdef CONFIG_TN3270_CONSOLE
if (CONSOLE_IS_3270) {
tty3270_con_driver = *td;
td = &tty3270_con_driver;
td->driver_name = "con3270";
td->name = "con3270";
td->major = MAJOR(S390_CONSOLE_DEV);
td->minor_start = MINOR(S390_CONSOLE_DEV);
td->num = 1;
td->refcount = &con3270_refcount;
td->table = con3270_table;
td->termios = con3270_termios;
td->termios_locked = con3270_termios_locked;
rc = tty_register_driver(td);
if (rc) {
printk(KERN_ERR
"con3270 registration failed with %d\n", rc);
} else {
con3270_major = MAJOR(S390_CONSOLE_DEV);
if (td->proc_entry != NULL)
td->proc_entry->mode = S_IRUGO | S_IWUGO;
}
}
#endif /* ifdef CONFIG_TN3270_CONSOLE */
#endif /* if LINUX_VERSION_CODE */
return rc;
}
/*
* tty3270_fini() -- Uninitialize linemode tubes
*/
void
tty3270_fini(void)
{
if (tty3270_major != -1) {
tty_unregister_driver(&tty3270_driver);
tty3270_major = -1;
}
#ifdef CONFIG_TN3270_CONSOLE
if (CONSOLE_IS_3270 && con3270_major != -1) {
tty_unregister_driver(&con3270_driver);
con3270_major = -1;
}
#endif
}
static int
tty3270_open(struct tty_struct *tty, struct file *filp)
{
tub_t *tubp;
long flags;
int rc;
int cmd;
if ((tubp = TTY2TUB(tty)) == NULL) {
return -ENODEV;
}
tub_inc_use_count();
if ((rc = tty3270_wait(tubp, &flags)) != 0)
goto do_fail;
if (tubp->lnopen > 0) {
tubp->lnopen++;
TUBUNLOCK(tubp->irq, flags);
return 0;
}
if (tubp->flags & TUB_OPEN_STET) {
cmd = TBC_UPDLOG;
} else {
cmd = TBC_OPEN;
tubp->flags &= ~TUB_SIZED;
}
if ((rc = tty3270_size(tubp, &flags)) != 0)
goto do_fail;
if ((rc = tty3270_rcl_init(tubp)) != 0)
goto do_fail;
if ((rc = tty3270_aid_init(tubp)) != 0)
goto do_fail;
if ((rc = tty3270_scl_init(tubp)) != 0)
goto do_fail;
tubp->mode = TBM_LN;
tubp->intv = tty3270_int;
tubp->tty = tty;
tubp->lnopen = 1;
tty->driver_data = tubp;
tty->winsize.ws_row = tubp->geom_rows - 2;
tty->winsize.ws_col = tubp->geom_cols;
if (tubp->tty_input == NULL)
tubp->tty_input = kmalloc(GEOM_INPLEN, GFP_KERNEL|GFP_DMA);
tubp->tty_inattr = TF_INPUT;
tubp->cmd = cmd;
tty3270_build(tubp);
TUBUNLOCK(tubp->irq, flags);
return 0;
do_fail:
tty3270_scl_fini(tubp);
tty3270_aid_fini(tubp);
tty3270_rcl_fini(tubp);
TUBUNLOCK(tubp->irq, flags);
tub_dec_use_count();
return rc;
}
static void
tty3270_close(struct tty_struct *tty, struct file *filp)
{
tub_t *tubp;
long flags;
if ((tubp = tty->driver_data) == NULL)
return;
tty3270_wait(tubp, &flags);
if (--tubp->lnopen > 0)
goto do_return;
tubp->tty = NULL;
tty->driver_data = NULL;
tty3270_aid_fini(tubp);
tty3270_rcl_fini(tubp);
tty3270_scl_fini(tubp);
do_return:
tub_dec_use_count();
TUBUNLOCK(tubp->irq, flags);
}
static int
tty3270_write(struct tty_struct *tty, int fromuser,
const unsigned char *buf, int count)
{
tub_t *tubp;
long flags;
bcb_t obcb;
int rc = 0;
if ((tubp = tty->driver_data) == NULL)
return -1;
#ifdef CONFIG_TN3270_CONSOLE
if (CONSOLE_IS_3270 && tub3270_con_tubp == tubp)
tub3270_con_copy(tubp);
#endif /* CONFIG_TN3270_CONSOLE */
obcb.bc_buf = (char *)buf;
obcb.bc_len = obcb.bc_cnt = obcb.bc_wr = count;
obcb.bc_rd = 0;
TUBLOCK(tubp->irq, flags);
rc = tub3270_movedata(&obcb, &tubp->tty_bcb, fromuser);
tty3270_try_logging(tubp);
TUBUNLOCK(tubp->irq, flags);
return rc;
}
static void
tty3270_put_char(struct tty_struct *tty, unsigned char ch)
{
long flags;
tub_t *tubp;
bcb_t *ob;
if ((tubp = tty->driver_data) == NULL)
return;
TUBLOCK(tubp->irq, flags);
ob = &tubp->tty_bcb;
if (ob->bc_cnt < ob->bc_len) {
ob->bc_buf[ob->bc_wr++] = ch;
if (ob->bc_wr == ob->bc_len)
ob->bc_wr = 0;
ob->bc_cnt++;
}
tty3270_try_logging(tubp);
TUBUNLOCK(tubp->irq, flags);
}
static void
tty3270_flush_chars(struct tty_struct *tty)
{
tub_t *tubp;
long flags;
if ((tubp = tty->driver_data) == NULL)
return;
TUBLOCK(tubp->irq, flags);
tty3270_try_logging(tubp);
TUBUNLOCK(tubp->irq, flags);
}
static int
tty3270_write_room(struct tty_struct *tty)
{
tub_t *tubp;
bcb_t *ob;
if ((tubp = tty->driver_data) == NULL)
return -1;
ob = &tubp->tty_bcb;
return ob->bc_len - ob->bc_cnt;
}
static int
tty3270_chars_in_buffer(struct tty_struct *tty)
{
tub_t *tubp;
bcb_t *ob;
if ((tubp = tty->driver_data) == NULL)
return -1;
ob = &tubp->tty_bcb;
return ob->bc_cnt;
}
static int
tty3270_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
tub_t *tubp;
long flags;
int ret = 0;
struct termios termios;
if ((tubp = tty->driver_data) == NULL)
return -ENODEV;
TUBLOCK(tubp->irq, flags);
if (tty->flags * (1 << TTY_IO_ERROR)) {
ret = -EIO;
goto do_return;
}
switch(cmd) {
case TCGETS:
ret = -ENOIOCTLCMD;
goto do_return;
case TCFLSH: /* arg: 2 or 0 */
ret = -ENOIOCTLCMD;
goto do_return;
case TCSETSF:
if (user_termios_to_kernel_termios(&termios,
(struct termios *)arg)) {
ret = -EFAULT;
goto do_return;
}
ret = -ENOIOCTLCMD;
goto do_return;
case TCGETA:
ret = -ENOIOCTLCMD;
goto do_return;
case TCSETA:
if (user_termio_to_kernel_termios(&termios,
(struct termio *)arg)) {
ret = -EFAULT;
goto do_return;
}
ret = -ENOIOCTLCMD;
goto do_return;
default:
ret = -ENOIOCTLCMD;
break;
}
do_return:
TUBUNLOCK(tubp->irq, flags);
return ret;
}
static void
tty3270_set_termios(struct tty_struct *tty, struct termios *old)
{
tub_t *tubp;
long flags;
int new;
if ((tubp = tty->driver_data) == NULL)
return;
if (tty3270_wait(tubp, &flags) != 0) {
TUBUNLOCK(tubp->irq, flags);
return;
}
new = L_ICANON(tty)? L_ECHO(tty)? TF_INPUT: TF_INPUTN:
tubp->tty_inattr;
if (new != tubp->tty_inattr) {
tubp->tty_inattr = new;
tubp->cmd = TBC_CLRINPUT;
tty3270_build(tubp);
}
TUBUNLOCK(tubp->irq, flags);
}
static void
tty3270_flush_buffer(struct tty_struct *tty)
{
tub_t *tubp;
bcb_t *ob;
long flags;
if ((tubp = tty->driver_data) == NULL)
return;
if (tubp->mode == TBM_FS && tubp->fs_pid != 0) {
kill_proc(tubp->fs_pid, SIGHUP, 1);
}
if ((tubp->flags & TUB_OPEN_STET) == 0) {
ob = &tubp->tty_bcb;
TUBLOCK(tubp->irq, flags);
ob->bc_rd = 0;
ob->bc_wr = 0;
ob->bc_cnt = 0;
TUBUNLOCK(tubp->irq, flags);
}
wake_up_interruptible(&tty->write_wait);
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
tty->ldisc.write_wakeup)
(tty->ldisc.write_wakeup)(tty);
}
static int
tty3270_read_proc(char *buf, char **start, off_t off, int count,
int *eof, void *data)
{
tub_t *tubp;
int begin = 0;
int i;
int rc;
int len = 0;
if (tty3270_proc_what == TW_CONFIG) {
/*
* Describe the 3270 configuration in ascii lines.
* Line 1: 0 <fsmajor> 0
* Console line: <devnum> CONSOLE <minor>
* Other lines: <devnum> <ttymajor> <minor>
*/
len += sprintf(buf + len, "0 %d 0\n", fs3270_major);
for (i = 1; i <= tubnummins; i++) {
tubp = (*tubminors)[i];
#ifdef CONFIG_TN3270_CONSOLE
if (CONSOLE_IS_3270 && tubp == tub3270_con_tubp)
len += sprintf(buf + len, "%.4x CONSOLE %d\n",
tubp->devno, i);
else
#endif
len += sprintf(buf + len, "%.4x %d %d\n",
tubp->devno, tty3270_major, i);
if (begin + len > off + count)
break;
if (begin + len < off) {
begin += len;
len = 0;
}
}
if (i > tubnummins)
*eof = 1;
if (off >= begin + len) {
rc = 0;
} else {
*start = buf + off - begin;
rc = MIN(count, begin + len - off);
}
if (*eof && rc == 0)
tty3270_proc_what = TW_BOGUS;
return rc;
}
len += sprintf(buf, "There are %d devices. fs major is %d, "
"tty major is %d.\n", tubnummins, fs3270_major,
tty3270_major);
len += sprintf(buf+len, " index=%d data=%d misc=%d\n",
tty3270_proc_index,
tty3270_proc_data,
tty3270_proc_misc);
/*
* Display info for the tube with minor nr in index
*/
len += tty3270_show_tube(tty3270_proc_index, buf+len, count-len);
*eof = 1;
if (off >= begin + len)
return 0;
*start = buf + off - begin;
return MIN(count, begin + len - off);
}
static int
tty3270_write_proc(struct file *file, const char *buffer,
unsigned long count, void *data)
{
char mybuf[GEOM_MAXINPLEN];
int mycount;
tub_t *tubp;
struct tty_struct *tty;
kdev_t device;
int rc;
mycount = MIN(count, sizeof mybuf - 1);
if (copy_from_user(mybuf, buffer, mycount) != 0)
return -EFAULT;
mybuf[mycount] = '\0';
/*
* User-mode settings affect only the current tty ---
*/
tubp = NULL;
tty = current->tty;
device = tty? tty->device: 0;
if (device) {
if (MAJOR(device) == IBM_TTY3270_MAJOR)
tubp = (*tubminors)[MINOR(device)];
#ifdef CONFIG_TN3270_CONSOLE
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0))
if (CONSOLE_IS_3270 && device == S390_CONSOLE_DEV)
tubp = tub3270_con_tubp;
#endif /* LINUX_VERSION_CODE */
#endif /* CONFIG_TN3270_CONSOLE */
}
if (tubp) {
if ((rc = tty3270_aid_set(tubp, mybuf, mycount + 1)))
return rc > 0? count: rc;
if ((rc = tty3270_rcl_set(tubp, mybuf, mycount + 1)))
return rc > 0? count: rc;
if ((rc = tty3270_scl_set(tubp, mybuf, mycount + 1)))
return rc > 0? count: rc;
}
/*
* Superuser-mode settings affect the driver overall ---
*/
if (!suser()) {
return -EPERM;
} else if (strncmp(mybuf, "index=", 6) == 0) {
tty3270_proc_index = simple_strtoul(mybuf + 6, 0,0);
return count;
} else if (strncmp(mybuf, "data=", 5) == 0) {
tty3270_proc_data = simple_strtoul(mybuf + 5, 0, 0);
return count;
} else if (strncmp(mybuf, "misc=", 5) == 0) {
tty3270_proc_misc = simple_strtoul(mybuf + 5, 0, 0);
return count;
} else if (strncmp(mybuf, "what=", 5) == 0) {
if (strcmp(mybuf+5, "bogus") == 0)
tty3270_proc_what = 0;
else if (strncmp(mybuf+5, "config", 6) == 0)
tty3270_proc_what = TW_CONFIG;
return count;
} else {
return -EINVAL;
}
}
static void
tty3270_hangup(struct tty_struct *tty)
{
tub_t *tubp;
extern void fs3270_release(tub_t *);
if ((tubp = tty->driver_data) == NULL)
return;
tty3270_rcl_purge(tubp);
tty3270_aid_reinit(tubp);
fs3270_release(tubp);
}
/*
* tty3270_bh(tubp) -- Perform back-half processing
*/
static void
tty3270_bh(void *data)
{
tub_t *tubp;
ioinfo_t *ioinfop;
long flags;
struct tty_struct *tty;
ioinfop = ioinfo[(tubp = data)->irq];
while (TUBTRYLOCK(tubp->irq, flags) == 0) {
if (ioinfop->ui.flags.unready == 1)
return;
}
if (ioinfop->ui.flags.unready == 1 ||
ioinfop->ui.flags.ready == 0)
goto do_unlock;
tubp->flags &= ~TUB_BHPENDING;
tty = tubp->tty;
if (tubp->flags & TUB_UNSOL_DE) {
tubp->flags &= ~TUB_UNSOL_DE;
if (tty != NULL) {
tty_hangup(tty);
wake_up_interruptible(&tubp->waitq);
goto do_unlock;
}
}
if (tubp->flags & TUB_IACTIVE) { /* If read ended, */
tty3270_do_input(tubp);
tubp->flags &= ~TUB_IACTIVE;
}
if ((tubp->flags & TUB_WORKING) == 0) {
if (tubp->flags & TUB_ATTN) {
tty3270_start_input(tubp);
tubp->flags &= ~TUB_ATTN;
} else if (tty3270_try_logging(tubp) == 0) {
wake_up_interruptible(&tubp->waitq);
}
}
if (tty != NULL) {
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
tty->ldisc.write_wakeup != NULL)
(tty->ldisc.write_wakeup)(tty);
wake_up_interruptible(&tty->write_wait);
}
do_unlock:
TUBUNLOCK(tubp->irq, flags);
}
/*
* tty3270_sched_bh(tubp) -- Schedule the back half
* Irq lock must be held on entry and remains held on exit.
*/
void
tty3270_sched_bh(tub_t *tubp)
{
if (tubp->flags & TUB_BHPENDING)
return;
tubp->flags |= TUB_BHPENDING;
tubp->tqueue.routine = tty3270_bh;
tubp->tqueue.data = tubp;
queue_task(&tubp->tqueue, &tq_immediate);
mark_bh(IMMEDIATE_BH);
}
/*
* tty3270_io() -- Perform line-mode reads and writes here
*/
int
tty3270_io(tub_t *tubp)
{
int rc;
ccw1_t *ccwp;
tubp->flags |= TUB_WORKING;
tubp->dstat = 0;
ccwp = &tubp->ttyccw;
rc = do_IO(tubp->irq, ccwp, tubp->irq, 0, 0);
return rc;
}
/*
* tty3270_wait(tubp) -- Wait until TUB_WORKING is off
* On entry the lock must not be held; on exit it is held.
*/
static int
tty3270_wait(tub_t *tubp, long *flags)
{
DECLARE_WAITQUEUE(wait, current);
TUBLOCK(tubp->irq, *flags);
add_wait_queue(&tubp->waitq, &wait);
while (!signal_pending(current) &&
(tubp->flags & TUB_WORKING) != 0) {
current->state = TASK_INTERRUPTIBLE;
TUBUNLOCK(tubp->irq, *flags);
schedule();
current->state = TASK_RUNNING;
TUBLOCK(tubp->irq, *flags);
}
remove_wait_queue(&tubp->waitq, &wait);
return signal_pending(current)? -ERESTARTSYS: 0;
}
void
tty3270_int(tub_t *tubp, devstat_t *dsp)
{
#define DEV_UE_BUSY \
(DEV_STAT_CHN_END | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP)
#define DEV_NOT_WORKING \
(DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_CHECK)
tubp->dstat = dsp->dstat;
/* Handle CE-DE-UE and subsequent UDE */
if (dsp->dstat == DEV_UE_BUSY) {
tubp->flags |= TUB_UE_BUSY;
return;
} else if (tubp->flags & TUB_UE_BUSY) {
tubp->flags &= ~TUB_UE_BUSY;
if (dsp->dstat == DEV_STAT_DEV_END &&
(tubp->flags & TUB_WORKING) != 0) {
tty3270_io(tubp);
return;
}
}
/* Handle ATTN */
if (dsp->dstat & DEV_STAT_ATTENTION)
tubp->flags |= TUB_ATTN;
if (dsp->dstat & DEV_STAT_CHN_END) {
tubp->cswl = dsp->rescnt;
if ((dsp->dstat & DEV_STAT_DEV_END) == 0)
tubp->flags |= TUB_EXPECT_DE;
else
tubp->flags &= ~TUB_EXPECT_DE;
} else if (dsp->dstat & DEV_STAT_DEV_END) {
if ((tubp->flags & TUB_EXPECT_DE) == 0)
tubp->flags |= TUB_UNSOL_DE;
tubp->flags &= ~TUB_EXPECT_DE;
}
if (dsp->dstat & DEV_NOT_WORKING)
tubp->flags &= ~TUB_WORKING;
if (dsp->dstat & DEV_STAT_UNIT_CHECK)
tubp->sense = dsp->ii.sense;
if ((tubp->flags & TUB_WORKING) == 0)
tty3270_sched_bh(tubp);
}
/*
* tty3270_refresh(), called by fs3270_close() when tubp->fsopen == 0.
* On entry, lock is held.
*/
void
tty3270_refresh(tub_t *tubp)
{
if (tubp->lnopen) {
tubp->mode = TBM_LN;
tubp->intv = tty3270_int;
tty3270_scl_resettimer(tubp);
tubp->cmd = TBC_UPDATE;
tty3270_build(tubp);
}
}
int
tty3270_try_logging(tub_t *tubp)
{
if (tubp->flags & TUB_WORKING)
return 0;
if (tubp->mode == TBM_FS)
return 0;
if (tubp->stat == TBS_HOLD)
return 0;
if (tubp->stat == TBS_MORE)
return 0;
#ifdef CONFIG_TN3270_CONSOLE
if (CONSOLE_IS_3270 && tub3270_con_tubp == tubp)
tub3270_con_copy(tubp);
#endif /* CONFIG_TN3270_CONSOLE */
if (tubp->tty_bcb.bc_cnt == 0)
return 0;
if (tubp->intv != tty3270_int)
return 0;
tubp->cmd = TBC_UPDLOG;
return tty3270_build(tubp);
}
/* tty3270 utility functions */
static void
tty3270_start_input(tub_t *tubp)
{
if (tubp->tty_input == NULL)
return;
tubp->ttyccw.cda = virt_to_phys(tubp->tty_input);
tubp->ttyccw.cmd_code = TC_READMOD;
tubp->ttyccw.count = GEOM_INPLEN;
tubp->ttyccw.flags = CCW_FLAG_SLI;
tty3270_io(tubp);
tubp->flags |= TUB_IACTIVE;
}
static void
tty3270_do_input(tub_t *tubp)
{
int count;
char *in;
int aidflags;
char *aidstring;
count = GEOM_INPLEN - tubp->cswl;
if ((in = tubp->tty_input) == NULL)
goto do_build;
tty3270_aid_get(tubp, in[0], &aidflags, &aidstring);
if (aidflags & TA_CLEARKEY) {
tubp->stat = TBS_RUNNING;
tty3270_scl_resettimer(tubp);
tubp->cmd = TBC_UPDATE;
} else if (aidflags & TA_CLEARLOG) {
tubp->stat = TBS_RUNNING;
tty3270_scl_resettimer(tubp);
tubp->cmd = TBC_CLRUPDLOG;
} else if (aidflags & TA_DOENTER) {
if (count <= 6) {
switch(tubp->stat) {
case TBS_MORE:
tubp->stat = TBS_HOLD;
tty3270_scl_resettimer(tubp);
break;
case TBS_HOLD:
tubp->stat = TBS_MORE;
tty3270_scl_settimer(tubp);
break;
case TBS_RUNNING:
tty3270_do_enter(tubp, in + 6, 0);
break;
}
tubp->cmd = TBC_UPDSTAT;
goto do_build;
}
in += 6;
count -= 6;
TUB_EBCASC(in, count);
tubp->cmd = TBC_CLRINPUT;
tty3270_do_enter(tubp, in, count);
} else if ((aidflags & TA_DOSTRING) != 0 && aidstring != NULL) {
tubp->cmd = TBC_KRUPDLOG;
tty3270_do_enter(tubp, aidstring, strlen(aidstring));
} else if ((aidflags & TA_DOSTRINGD) != 0 && aidstring != NULL) {
tty3270_do_showi(tubp, aidstring, strlen(aidstring));
tubp->cmd = TBC_UPDINPUT;
} else {
if (in[0] != 0x60)
tubp->flags |= TUB_ALARM;
tubp->cmd = TBC_KRUPDLOG;
}
do_build:
tty3270_build(tubp);
}
static void
tty3270_do_enter(tub_t *tubp, char *cp, int count)
{
struct tty_struct *tty;
int func = -1;
if ((tty = tubp->tty) == NULL)
return;
if (count < 0)
return;
if (count == 2 && (cp[0] == '^' || cp[0] == '\252')) {
switch(cp[1]) {
case 'c': case 'C':
func = INTR_CHAR(tty);
break;
case 'd': case 'D':
func = EOF_CHAR(tty);
break;
case 'z': case 'Z':
func = SUSP_CHAR(tty);
break;
}
} else if (count == 2 && cp[0] == 0x1b) { /* if ESC */
int inc = 0;
char buf[GEOM_INPLEN + 1];
int len;
switch(cp[1]) {
case 'k': case 'K':
inc = -1;
break;
case 'j': case 'J':
inc = 1;
break;
}
if (inc == 0)
goto not_rcl;
len = tty3270_rcl_get(tubp, buf, sizeof buf, inc);
if (len == 0) {
tubp->flags |= TUB_ALARM;
return;
}
tty3270_do_showi(tubp, buf, len);
tubp->cmd = TBC_UPDINPUT;
return;
}
not_rcl:
if (func != -1) {
*tty->flip.flag_buf_ptr++ = TTY_NORMAL;
*tty->flip.char_buf_ptr++ = func;
tty->flip.count++;
} else {
tty3270_rcl_put(tubp, cp, count);
memcpy(tty->flip.char_buf_ptr, cp, count);
/* Add newline unless line ends with "^n" */
if (count < 2 || cp[count - 1] != 'n' ||
(cp[count - 2] != '^' && cp[count - 2] != '\252')) {
tty->flip.char_buf_ptr[count] = '\n';
count++;
} else {
count -= 2; /* Lop trailing "^n" from text */
}
memset(tty->flip.flag_buf_ptr, TTY_NORMAL, count);
tty->flip.char_buf_ptr += count;
tty->flip.flag_buf_ptr += count;
tty->flip.count += count;
}
tty_flip_buffer_push(tty);
}
static void
tty3270_do_showi(tub_t *tubp, char *cp, int cl)
{
if (cl > GEOM_INPLEN)
cl = GEOM_INPLEN;
memset(tubp->tty_input, 0, GEOM_INPLEN);
memcpy(tubp->tty_input, cp, cl);
TUB_ASCEBC(tubp->tty_input, cl);
}
/* Debugging routine */
static int
tty3270_show_tube(int minor, char *buf, int count)
{
tub_t *tubp;
struct tty_struct *tty;
struct termios *mp;
int len;
/*012345678901234567890123456789012345678901234567890123456789 */
/*Info for tub_t[dd] at xxxxxxxx: */
/* geom: rows=dd cols=dd model=d */
/* lnopen=dd fsopen=dd waitq=xxxxxxxx */
/* dstat=xx mode=dd stat=dd flags=xxxx */
/* oucount=dddd ourd=ddddd ouwr=ddddd nextlogx=ddddd */
/* tty=xxxxxxxx */
/* write_wait=xxxxxxxx read_wait=xxxxxxxx */
/* iflag=xxxxxxxx oflag=xxxxxxxx cflag=xxxxxxxx lflag=xxxxxxxx */
if (minor < 0 || minor > tubnummins ||
(tubp = (*tubminors)[minor]) == NULL)
return sprintf(buf, "No tube at index=%d\n", minor);
tty = tubp->tty;
len = 0;
len += sprintf(buf+len, "Info for tub_t[%d] at %p:\n", minor, tubp);
len += sprintf(buf+len, "inattr is at %p\n", &tubp->tty_inattr);
len += sprintf(buf+len, " geom: rows=%.2d cols=%.2d model=%.1d\n",
tubp->geom_rows, tubp->geom_cols, tubp->tubiocb.model);
len += sprintf(buf+len,
" lnopen=%-2d fsopen=%-2d waitq=%p\n",
tubp->lnopen, tubp->fsopen, &tubp->waitq);
len += sprintf(buf+len, " dstat=%.2x mode=%-2d "
"stat=%-2d flags=%-4x\n", tubp->dstat,
tubp->mode, tubp->stat, tubp->flags);
#ifdef RBH_FIXTHIS
len += sprintf(buf+len,
" oucount=%-4d ourd=%-5d ouwr=%-5d"
" nextlogx=%-5d\n", tubp->tty_oucount,
tubp->tty_ourd, tubp->tty_ouwr, tubp->tty_nextlogx);
#endif
len += sprintf(buf+len, " tty=%p\n",tubp->tty);
if (tty)
len += sprintf(buf+len,
" write_wait=%p read_wait=%p\n",
&tty->write_wait, &tty->read_wait);
if (tty && ((mp = tty->termios)))
len += sprintf(buf+len," iflag=%.8x oflag=%.8x "
"cflag=%.8x lflag=%.8x\n", mp->c_iflag,
mp->c_oflag, mp->c_cflag, mp->c_lflag);
return len;
}
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