/* * IBM/3270 Driver -- Copyright (C) 2000, 2001 UTS Global LLC * * tubtty.c -- Linemode tty driver * * * * * * Author: Richard Hitt */ #include #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); } tty_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 0 * Console line: CONSOLE * Other lines: */ 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) { tty_wakeup(tty); } 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; }