mirror of
https://github.com/topjohnwu/ndk-busybox.git
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446dd27843
recovery_mode and changed option processing.
1444 lines
38 KiB
C
1444 lines
38 KiB
C
/* vi: set sw=4 ts=4: */
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/* stty -- change and print terminal line settings
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Copyright (C) 1990-1999 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Usage: stty [-ag] [-F device] [setting...]
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Options:
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-a Write all current settings to stdout in human-readable form.
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-g Write all current settings to stdout in stty-readable form.
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-F Open and use the specified device instead of stdin
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If no args are given, write to stdout the baud rate and settings that
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have been changed from their defaults. Mode reading and changes
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are done on the specified device, or stdin if none was specified.
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David MacKenzie <djm@gnu.ai.mit.edu>
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Special for busybox ported by Vladimir Oleynik <vodz@usa.net> 2001
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*/
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//#define TEST
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#include <termios.h>
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#include <sys/ioctl.h>
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#include <getopt.h>
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#include <sys/param.h>
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#include <unistd.h>
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#ifndef STDIN_FILENO
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# define STDIN_FILENO 0
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#endif
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#ifndef STDOUT_FILENO
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# define STDOUT_FILENO 1
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <limits.h>
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#include <memory.h>
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#include <fcntl.h>
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#include "busybox.h"
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#define STREQ(a, b) (strcmp ((a), (b)) == 0)
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#ifndef _POSIX_VDISABLE
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# define _POSIX_VDISABLE ((unsigned char) 0)
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#endif
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#define Control(c) ((c) & 0x1f)
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/* Canonical values for control characters. */
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#ifndef CINTR
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# define CINTR Control ('c')
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#endif
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#ifndef CQUIT
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# define CQUIT 28
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#endif
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#ifndef CERASE
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# define CERASE 127
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#endif
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#ifndef CKILL
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# define CKILL Control ('u')
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#endif
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#ifndef CEOF
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# define CEOF Control ('d')
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#endif
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#ifndef CEOL
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# define CEOL _POSIX_VDISABLE
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#endif
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#ifndef CSTART
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# define CSTART Control ('q')
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#endif
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#ifndef CSTOP
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# define CSTOP Control ('s')
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#endif
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#ifndef CSUSP
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# define CSUSP Control ('z')
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#endif
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#if defined(VEOL2) && !defined(CEOL2)
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# define CEOL2 _POSIX_VDISABLE
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#endif
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/* ISC renamed swtch to susp for termios, but we'll accept either name. */
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#if defined(VSUSP) && !defined(VSWTCH)
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# define VSWTCH VSUSP
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# define CSWTCH CSUSP
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#endif
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#if defined(VSWTCH) && !defined(CSWTCH)
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# define CSWTCH _POSIX_VDISABLE
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#endif
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/* SunOS 5.3 loses (^Z doesn't work) if `swtch' is the same as `susp'.
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So the default is to disable `swtch.' */
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#if defined (__sparc__) && defined (__svr4__)
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# undef CSWTCH
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# define CSWTCH _POSIX_VDISABLE
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#endif
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#if defined(VWERSE) && !defined (VWERASE) /* AIX-3.2.5 */
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# define VWERASE VWERSE
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#endif
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#if defined(VDSUSP) && !defined (CDSUSP)
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# define CDSUSP Control ('y')
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#endif
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#if !defined(VREPRINT) && defined(VRPRNT) /* Irix 4.0.5 */
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# define VREPRINT VRPRNT
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#endif
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#if defined(VREPRINT) && !defined(CRPRNT)
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# define CRPRNT Control ('r')
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#endif
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#if defined(VWERASE) && !defined(CWERASE)
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# define CWERASE Control ('w')
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#endif
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#if defined(VLNEXT) && !defined(CLNEXT)
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# define CLNEXT Control ('v')
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#endif
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#if defined(VDISCARD) && !defined(VFLUSHO)
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# define VFLUSHO VDISCARD
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#endif
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#if defined(VFLUSH) && !defined(VFLUSHO) /* Ultrix 4.2 */
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# define VFLUSHO VFLUSH
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#endif
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#if defined(CTLECH) && !defined(ECHOCTL) /* Ultrix 4.3 */
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# define ECHOCTL CTLECH
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#endif
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#if defined(TCTLECH) && !defined(ECHOCTL) /* Ultrix 4.2 */
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# define ECHOCTL TCTLECH
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#endif
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#if defined(CRTKIL) && !defined(ECHOKE) /* Ultrix 4.2 and 4.3 */
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# define ECHOKE CRTKIL
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#endif
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#if defined(VFLUSHO) && !defined(CFLUSHO)
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# define CFLUSHO Control ('o')
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#endif
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#if defined(VSTATUS) && !defined(CSTATUS)
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# define CSTATUS Control ('t')
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#endif
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/* Which speeds to set. */
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enum speed_setting {
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input_speed, output_speed, both_speeds
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};
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/* What to output and how. */
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enum output_type {
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changed, all, recoverable /* Default, -a, -g. */
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};
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/* Which member(s) of `struct termios' a mode uses. */
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enum mode_type {
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control, input, output, local, combination
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};
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static const char evenp [] = "evenp";
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static const char raw [] = "raw";
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static const char stty_min [] = "min";
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static const char stty_time [] = "time";
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static const char stty_swtch[] = "swtch";
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static const char stty_eol [] = "eol";
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static const char stty_eof [] = "eof";
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static const char parity [] = "parity";
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static const char stty_oddp [] = "oddp";
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static const char stty_nl [] = "nl";
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static const char stty_ek [] = "ek";
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static const char stty_sane [] = "sane";
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static const char cbreak [] = "cbreak";
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static const char stty_pass8[] = "pass8";
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static const char litout [] = "litout";
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static const char cooked [] = "cooked";
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static const char decctlq [] = "decctlq";
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static const char stty_tabs [] = "tabs";
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static const char stty_lcase[] = "lcase";
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static const char stty_LCASE[] = "LCASE";
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static const char stty_crt [] = "crt";
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static const char stty_dec [] = "dec";
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/* Flags for `struct mode_info'. */
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#define SANE_SET 1 /* Set in `sane' mode. */
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#define SANE_UNSET 2 /* Unset in `sane' mode. */
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#define REV 4 /* Can be turned off by prepending `-'. */
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#define OMIT 8 /* Don't display value. */
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/* Each mode. */
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struct mode_info {
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const char *name; /* Name given on command line. */
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enum mode_type type; /* Which structure element to change. */
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char flags; /* Setting and display options. */
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unsigned long bits; /* Bits to set for this mode. */
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unsigned long mask; /* Other bits to turn off for this mode. */
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};
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static const struct mode_info mode_info[] = {
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{"parenb", control, REV, PARENB, 0 },
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{"parodd", control, REV, PARODD, 0 },
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{"cs5", control, 0, CS5, CSIZE},
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{"cs6", control, 0, CS6, CSIZE},
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{"cs7", control, 0, CS7, CSIZE},
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{"cs8", control, 0, CS8, CSIZE},
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{"hupcl", control, REV, HUPCL, 0 },
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{"hup", control, REV | OMIT, HUPCL, 0 },
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{"cstopb", control, REV, CSTOPB, 0 },
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{"cread", control, SANE_SET | REV, CREAD, 0 },
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{"clocal", control, REV, CLOCAL, 0 },
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#ifdef CRTSCTS
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{"crtscts", control, REV, CRTSCTS, 0 },
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#endif
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{"ignbrk", input, SANE_UNSET | REV, IGNBRK, 0 },
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{"brkint", input, SANE_SET | REV, BRKINT, 0 },
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{"ignpar", input, REV, IGNPAR, 0 },
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{"parmrk", input, REV, PARMRK, 0 },
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{"inpck", input, REV, INPCK, 0 },
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{"istrip", input, REV, ISTRIP, 0 },
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{"inlcr", input, SANE_UNSET | REV, INLCR, 0 },
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{"igncr", input, SANE_UNSET | REV, IGNCR, 0 },
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{"icrnl", input, SANE_SET | REV, ICRNL, 0 },
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{"ixon", input, REV, IXON, 0 },
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{"ixoff", input, SANE_UNSET | REV, IXOFF, 0 },
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{"tandem", input, REV | OMIT, IXOFF, 0 },
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#ifdef IUCLC
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{"iuclc", input, SANE_UNSET | REV, IUCLC, 0 },
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#endif
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#ifdef IXANY
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{"ixany", input, SANE_UNSET | REV, IXANY, 0 },
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#endif
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#ifdef IMAXBEL
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{"imaxbel", input, SANE_SET | REV, IMAXBEL, 0 },
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#endif
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{"opost", output, SANE_SET | REV, OPOST, 0 },
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#ifdef OLCUC
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{"olcuc", output, SANE_UNSET | REV, OLCUC, 0 },
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#endif
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#ifdef OCRNL
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{"ocrnl", output, SANE_UNSET | REV, OCRNL, 0 },
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#endif
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#ifdef ONLCR
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{"onlcr", output, SANE_SET | REV, ONLCR, 0 },
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#endif
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#ifdef ONOCR
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{"onocr", output, SANE_UNSET | REV, ONOCR, 0 },
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#endif
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#ifdef ONLRET
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{"onlret", output, SANE_UNSET | REV, ONLRET, 0 },
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#endif
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#ifdef OFILL
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{"ofill", output, SANE_UNSET | REV, OFILL, 0 },
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#endif
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#ifdef OFDEL
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{"ofdel", output, SANE_UNSET | REV, OFDEL, 0 },
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#endif
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#ifdef NLDLY
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{"nl1", output, SANE_UNSET, NL1, NLDLY},
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{"nl0", output, SANE_SET, NL0, NLDLY},
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#endif
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#ifdef CRDLY
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{"cr3", output, SANE_UNSET, CR3, CRDLY},
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{"cr2", output, SANE_UNSET, CR2, CRDLY},
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{"cr1", output, SANE_UNSET, CR1, CRDLY},
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{"cr0", output, SANE_SET, CR0, CRDLY},
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#endif
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#ifdef TABDLY
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{"tab3", output, SANE_UNSET, TAB3, TABDLY},
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{"tab2", output, SANE_UNSET, TAB2, TABDLY},
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{"tab1", output, SANE_UNSET, TAB1, TABDLY},
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{"tab0", output, SANE_SET, TAB0, TABDLY},
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#else
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# ifdef OXTABS
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{"tab3", output, SANE_UNSET, OXTABS, 0 },
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# endif
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#endif
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#ifdef BSDLY
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{"bs1", output, SANE_UNSET, BS1, BSDLY},
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{"bs0", output, SANE_SET, BS0, BSDLY},
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#endif
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#ifdef VTDLY
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{"vt1", output, SANE_UNSET, VT1, VTDLY},
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{"vt0", output, SANE_SET, VT0, VTDLY},
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#endif
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#ifdef FFDLY
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{"ff1", output, SANE_UNSET, FF1, FFDLY},
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{"ff0", output, SANE_SET, FF0, FFDLY},
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#endif
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{"isig", local, SANE_SET | REV, ISIG, 0 },
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{"icanon", local, SANE_SET | REV, ICANON, 0 },
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#ifdef IEXTEN
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{"iexten", local, SANE_SET | REV, IEXTEN, 0 },
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#endif
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{"echo", local, SANE_SET | REV, ECHO, 0 },
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{"echoe", local, SANE_SET | REV, ECHOE, 0 },
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{"crterase", local, REV | OMIT, ECHOE, 0 },
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{"echok", local, SANE_SET | REV, ECHOK, 0 },
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{"echonl", local, SANE_UNSET | REV, ECHONL, 0 },
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{"noflsh", local, SANE_UNSET | REV, NOFLSH, 0 },
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#ifdef XCASE
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{"xcase", local, SANE_UNSET | REV, XCASE, 0 },
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#endif
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#ifdef TOSTOP
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{"tostop", local, SANE_UNSET | REV, TOSTOP, 0 },
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#endif
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#ifdef ECHOPRT
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{"echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 },
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{"prterase", local, REV | OMIT, ECHOPRT, 0 },
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#endif
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#ifdef ECHOCTL
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{"echoctl", local, SANE_SET | REV, ECHOCTL, 0 },
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{"ctlecho", local, REV | OMIT, ECHOCTL, 0 },
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#endif
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#ifdef ECHOKE
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{"echoke", local, SANE_SET | REV, ECHOKE, 0 },
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{"crtkill", local, REV | OMIT, ECHOKE, 0 },
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#endif
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{evenp, combination, REV | OMIT, 0, 0 },
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{parity, combination, REV | OMIT, 0, 0 },
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{stty_oddp, combination, REV | OMIT, 0, 0 },
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{stty_nl, combination, REV | OMIT, 0, 0 },
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{stty_ek, combination, OMIT, 0, 0 },
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{stty_sane, combination, OMIT, 0, 0 },
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{cooked, combination, REV | OMIT, 0, 0 },
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{raw, combination, REV | OMIT, 0, 0 },
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{stty_pass8, combination, REV | OMIT, 0, 0 },
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{litout, combination, REV | OMIT, 0, 0 },
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{cbreak, combination, REV | OMIT, 0, 0 },
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#ifdef IXANY
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{decctlq, combination, REV | OMIT, 0, 0 },
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#endif
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#if defined (TABDLY) || defined (OXTABS)
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{stty_tabs, combination, REV | OMIT, 0, 0 },
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#endif
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#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
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{stty_lcase, combination, REV | OMIT, 0, 0 },
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{stty_LCASE, combination, REV | OMIT, 0, 0 },
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#endif
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{stty_crt, combination, OMIT, 0, 0 },
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{stty_dec, combination, OMIT, 0, 0 },
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};
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static const int NUM_mode_info =
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(sizeof(mode_info) / sizeof(struct mode_info));
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/* Control character settings. */
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struct control_info {
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const char *name; /* Name given on command line. */
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unsigned char saneval; /* Value to set for `stty sane'. */
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int offset; /* Offset in c_cc. */
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};
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/* Control characters. */
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static const struct control_info control_info[] = {
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{"intr", CINTR, VINTR},
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{"quit", CQUIT, VQUIT},
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{"erase", CERASE, VERASE},
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{"kill", CKILL, VKILL},
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{stty_eof, CEOF, VEOF},
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{stty_eol, CEOL, VEOL},
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#ifdef VEOL2
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{"eol2", CEOL2, VEOL2},
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#endif
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#ifdef VSWTCH
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{stty_swtch, CSWTCH, VSWTCH},
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#endif
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{"start", CSTART, VSTART},
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{"stop", CSTOP, VSTOP},
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{"susp", CSUSP, VSUSP},
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#ifdef VDSUSP
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{"dsusp", CDSUSP, VDSUSP},
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#endif
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#ifdef VREPRINT
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{"rprnt", CRPRNT, VREPRINT},
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#endif
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#ifdef VWERASE
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{"werase", CWERASE, VWERASE},
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#endif
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#ifdef VLNEXT
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{"lnext", CLNEXT, VLNEXT},
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#endif
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#ifdef VFLUSHO
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{"flush", CFLUSHO, VFLUSHO},
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#endif
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#ifdef VSTATUS
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{"status", CSTATUS, VSTATUS},
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#endif
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/* These must be last because of the display routines. */
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{stty_min, 1, VMIN},
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{stty_time, 0, VTIME},
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};
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static const int NUM_control_info =
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(sizeof(control_info) / sizeof(struct control_info));
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static const char * visible(unsigned int ch);
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static unsigned long baud_to_value(speed_t speed);
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static int recover_mode(char *arg, struct termios *mode);
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static int screen_columns(void);
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static int set_mode(const struct mode_info *info,
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int reversed, struct termios *mode);
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static speed_t string_to_baud(const char *arg);
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static tcflag_t* mode_type_flag(enum mode_type type, struct termios *mode);
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static void display_all(struct termios *mode, int fd,
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const char *device_name);
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static void display_changed(struct termios *mode);
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static void display_recoverable(struct termios *mode);
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static void display_settings(enum output_type output_type,
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struct termios *mode, int fd,
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const char *device_name);
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static void display_speed(struct termios *mode, int fancy);
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static void display_window_size(int fancy, int fd,
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const char *device_name);
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static void sane_mode(struct termios *mode);
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static void set_control_char(const struct control_info *info,
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const char *arg, struct termios *mode);
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static void set_speed(enum speed_setting type,
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const char *arg, struct termios *mode);
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static void set_window_size(int rows, int cols, int fd,
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const char *device_name);
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/* The width of the screen, for output wrapping. */
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static int max_col;
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/* Current position, to know when to wrap. */
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static int current_col;
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/* Print format string MESSAGE and optional args.
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Wrap to next line first if it won't fit.
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Print a space first unless MESSAGE will start a new line. */
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static void wrapf(const char *message, ...)
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{
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va_list args;
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char buf[1024]; /* Plenty long for our needs. */
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int buflen;
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va_start(args, message);
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vsprintf(buf, message, args);
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va_end(args);
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buflen = strlen(buf);
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if (current_col + (current_col > 0) + buflen >= max_col) {
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putchar('\n');
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current_col = 0;
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}
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if (current_col > 0) {
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putchar(' ');
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current_col++;
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}
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fputs(buf, stdout);
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current_col += buflen;
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}
|
|
|
|
static const struct suffix_mult stty_suffixes[] = {
|
|
{"b", 512 },
|
|
{"k", 1024},
|
|
{"B", 1024},
|
|
{NULL, 0 }
|
|
};
|
|
|
|
#ifndef TEST
|
|
extern int stty_main(int argc, char **argv)
|
|
#else
|
|
extern int main(int argc, char **argv)
|
|
#endif
|
|
{
|
|
struct termios mode;
|
|
enum output_type output_type;
|
|
int optc;
|
|
int require_set_attr;
|
|
int speed_was_set;
|
|
int verbose_output;
|
|
int recoverable_output;
|
|
int k;
|
|
int noargs = 1;
|
|
char * file_name = NULL;
|
|
int fd;
|
|
const char *device_name;
|
|
|
|
output_type = changed;
|
|
verbose_output = 0;
|
|
recoverable_output = 0;
|
|
|
|
/* Don't print error messages for unrecognized options. */
|
|
opterr = 0;
|
|
|
|
while ((optc = getopt(argc, argv, "agF:")) != -1) {
|
|
switch (optc) {
|
|
case 'a':
|
|
verbose_output = 1;
|
|
output_type = all;
|
|
break;
|
|
|
|
case 'g':
|
|
recoverable_output = 1;
|
|
output_type = recoverable;
|
|
break;
|
|
|
|
case 'F':
|
|
if (file_name)
|
|
error_msg_and_die("only one device may be specified");
|
|
file_name = optarg;
|
|
break;
|
|
|
|
default: /* unrecognized option */
|
|
noargs = 0;
|
|
break;
|
|
}
|
|
|
|
if (noargs == 0)
|
|
break;
|
|
}
|
|
|
|
if (optind < argc)
|
|
noargs = 0;
|
|
|
|
/* Specifying both -a and -g gets an error. */
|
|
if (verbose_output && recoverable_output)
|
|
error_msg_and_die ("verbose and stty-readable output styles are mutually exclusive");
|
|
|
|
/* Specifying any other arguments with -a or -g gets an error. */
|
|
if (!noargs && (verbose_output || recoverable_output))
|
|
error_msg_and_die ("modes may not be set when specifying an output style");
|
|
|
|
/* FIXME: it'd be better not to open the file until we've verified
|
|
that all arguments are valid. Otherwise, we could end up doing
|
|
only some of the requested operations and then failing, probably
|
|
leaving things in an undesirable state. */
|
|
|
|
if (file_name) {
|
|
int fdflags;
|
|
|
|
device_name = file_name;
|
|
fd = open(device_name, O_RDONLY | O_NONBLOCK);
|
|
if (fd < 0)
|
|
perror_msg_and_die("%s", device_name);
|
|
if ((fdflags = fcntl(fd, F_GETFL)) == -1
|
|
|| fcntl(fd, F_SETFL, fdflags & ~O_NONBLOCK) < 0)
|
|
perror_msg_and_die("%s: couldn't reset non-blocking mode",
|
|
device_name);
|
|
} else {
|
|
fd = 0;
|
|
device_name = "standard input";
|
|
}
|
|
|
|
/* Initialize to all zeroes so there is no risk memcmp will report a
|
|
spurious difference in an uninitialized portion of the structure. */
|
|
memset(&mode, 0, sizeof(mode));
|
|
if (tcgetattr(fd, &mode))
|
|
perror_msg_and_die("%s", device_name);
|
|
|
|
if (verbose_output || recoverable_output || noargs) {
|
|
max_col = screen_columns();
|
|
current_col = 0;
|
|
display_settings(output_type, &mode, fd, device_name);
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
speed_was_set = 0;
|
|
require_set_attr = 0;
|
|
k = optind;
|
|
while (k < argc) {
|
|
int match_found = 0;
|
|
int reversed = 0;
|
|
int i;
|
|
|
|
if (argv[k][0] == '-') {
|
|
++argv[k];
|
|
reversed = 1;
|
|
}
|
|
for (i = 0; i < NUM_mode_info; ++i)
|
|
if (STREQ(argv[k], mode_info[i].name)) {
|
|
match_found = set_mode(&mode_info[i], reversed, &mode);
|
|
require_set_attr = 1;
|
|
break;
|
|
}
|
|
|
|
if (match_found == 0 && reversed)
|
|
error_msg_and_die("invalid argument `%s'", --argv[k]);
|
|
|
|
if (match_found == 0)
|
|
for (i = 0; i < NUM_control_info; ++i)
|
|
if (STREQ(argv[k], control_info[i].name)) {
|
|
if (k == argc - 1)
|
|
error_msg_and_die("missing argument to `%s'", argv[k]);
|
|
match_found = 1;
|
|
++k;
|
|
set_control_char(&control_info[i], argv[k], &mode);
|
|
require_set_attr = 1;
|
|
break;
|
|
}
|
|
|
|
if (match_found == 0) {
|
|
if (STREQ(argv[k], "ispeed")) {
|
|
if (k == argc - 1)
|
|
error_msg_and_die("missing argument to `%s'", argv[k]);
|
|
++k;
|
|
set_speed(input_speed, argv[k], &mode);
|
|
speed_was_set = 1;
|
|
require_set_attr = 1;
|
|
} else if (STREQ(argv[k], "ospeed")) {
|
|
if (k == argc - 1)
|
|
error_msg_and_die("missing argument to `%s'", argv[k]);
|
|
++k;
|
|
set_speed(output_speed, argv[k], &mode);
|
|
speed_was_set = 1;
|
|
require_set_attr = 1;
|
|
}
|
|
#ifdef TIOCGWINSZ
|
|
else if (STREQ(argv[k], "rows")) {
|
|
if (k == argc - 1)
|
|
error_msg_and_die("missing argument to `%s'", argv[k]);
|
|
++k;
|
|
set_window_size((int) parse_number(argv[k], stty_suffixes),
|
|
-1, fd, device_name);
|
|
} else if (STREQ(argv[k], "cols") || STREQ(argv[k], "columns")) {
|
|
if (k == argc - 1)
|
|
error_msg_and_die("missing argument to `%s'", argv[k]);
|
|
++k;
|
|
set_window_size(-1,
|
|
(int) parse_number(argv[k], stty_suffixes),
|
|
fd, device_name);
|
|
} else if (STREQ(argv[k], "size")) {
|
|
max_col = screen_columns();
|
|
current_col = 0;
|
|
display_window_size(0, fd, device_name);
|
|
}
|
|
#endif
|
|
#ifdef HAVE_C_LINE
|
|
else if (STREQ(argv[k], "line")) {
|
|
if (k == argc - 1)
|
|
error_msg_and_die("missing argument to `%s'", argv[k]);
|
|
++k;
|
|
mode.c_line = parse_number(argv[k], stty_suffixes);
|
|
require_set_attr = 1;
|
|
}
|
|
#endif
|
|
else if (STREQ(argv[k], "speed")) {
|
|
max_col = screen_columns();
|
|
display_speed(&mode, 0);
|
|
} else if (recover_mode(argv[k], &mode) == 1)
|
|
require_set_attr = 1;
|
|
else if (string_to_baud(argv[k]) != (speed_t) - 1) {
|
|
set_speed(both_speeds, argv[k], &mode);
|
|
speed_was_set = 1;
|
|
require_set_attr = 1;
|
|
} else
|
|
error_msg_and_die("invalid argument `%s'", argv[k]);
|
|
}
|
|
k++;
|
|
}
|
|
|
|
if (require_set_attr) {
|
|
struct termios new_mode;
|
|
|
|
if (tcsetattr(fd, TCSADRAIN, &mode))
|
|
perror_msg_and_die("%s", device_name);
|
|
|
|
/* POSIX (according to Zlotnick's book) tcsetattr returns zero if
|
|
it performs *any* of the requested operations. This means it
|
|
can report `success' when it has actually failed to perform
|
|
some proper subset of the requested operations. To detect
|
|
this partial failure, get the current terminal attributes and
|
|
compare them to the requested ones. */
|
|
|
|
/* Initialize to all zeroes so there is no risk memcmp will report a
|
|
spurious difference in an uninitialized portion of the structure. */
|
|
memset(&new_mode, 0, sizeof(new_mode));
|
|
if (tcgetattr(fd, &new_mode))
|
|
perror_msg_and_die("%s", device_name);
|
|
|
|
/* Normally, one shouldn't use memcmp to compare structures that
|
|
may have `holes' containing uninitialized data, but we have been
|
|
careful to initialize the storage of these two variables to all
|
|
zeroes. One might think it more efficient simply to compare the
|
|
modified fields, but that would require enumerating those fields --
|
|
and not all systems have the same fields in this structure. */
|
|
|
|
if (memcmp(&mode, &new_mode, sizeof(mode)) != 0) {
|
|
#ifdef CIBAUD
|
|
/* SunOS 4.1.3 (at least) has the problem that after this sequence,
|
|
tcgetattr (&m1); tcsetattr (&m1); tcgetattr (&m2);
|
|
sometimes (m1 != m2). The only difference is in the four bits
|
|
of the c_cflag field corresponding to the baud rate. To save
|
|
Sun users a little confusion, don't report an error if this
|
|
happens. But suppress the error only if we haven't tried to
|
|
set the baud rate explicitly -- otherwise we'd never give an
|
|
error for a true failure to set the baud rate. */
|
|
|
|
new_mode.c_cflag &= (~CIBAUD);
|
|
if (speed_was_set || memcmp(&mode, &new_mode, sizeof(mode)) != 0)
|
|
#endif
|
|
error_msg_and_die ("%s: unable to perform all requested operations",
|
|
device_name);
|
|
}
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
/* Return 0 if not applied because not reversible; otherwise return 1. */
|
|
|
|
static int
|
|
set_mode(const struct mode_info *info, int reversed, struct termios *mode)
|
|
{
|
|
tcflag_t *bitsp;
|
|
|
|
if (reversed && (info->flags & REV) == 0)
|
|
return 0;
|
|
|
|
bitsp = mode_type_flag(info->type, mode);
|
|
|
|
if (bitsp == NULL) {
|
|
/* Combination mode. */
|
|
if (info->name == evenp || info->name == parity) {
|
|
if (reversed)
|
|
mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
|
else
|
|
mode->c_cflag =
|
|
(mode->c_cflag & ~PARODD & ~CSIZE) | PARENB | CS7;
|
|
} else if (info->name == stty_oddp) {
|
|
if (reversed)
|
|
mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
|
else
|
|
mode->c_cflag =
|
|
(mode->c_cflag & ~CSIZE) | CS7 | PARODD | PARENB;
|
|
} else if (info->name == stty_nl) {
|
|
if (reversed) {
|
|
mode->c_iflag = (mode->c_iflag | ICRNL) & ~INLCR & ~IGNCR;
|
|
mode->c_oflag = (mode->c_oflag
|
|
#ifdef ONLCR
|
|
| ONLCR
|
|
#endif
|
|
)
|
|
#ifdef OCRNL
|
|
& ~OCRNL
|
|
#endif
|
|
#ifdef ONLRET
|
|
& ~ONLRET
|
|
#endif
|
|
;
|
|
} else {
|
|
mode->c_iflag = mode->c_iflag & ~ICRNL;
|
|
#ifdef ONLCR
|
|
mode->c_oflag = mode->c_oflag & ~ONLCR;
|
|
#endif
|
|
}
|
|
} else if (info->name == stty_ek) {
|
|
mode->c_cc[VERASE] = CERASE;
|
|
mode->c_cc[VKILL] = CKILL;
|
|
} else if (info->name == stty_sane)
|
|
sane_mode(mode);
|
|
else if (info->name == cbreak) {
|
|
if (reversed)
|
|
mode->c_lflag |= ICANON;
|
|
else
|
|
mode->c_lflag &= ~ICANON;
|
|
} else if (info->name == stty_pass8) {
|
|
if (reversed) {
|
|
mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARENB;
|
|
mode->c_iflag |= ISTRIP;
|
|
} else {
|
|
mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
|
mode->c_iflag &= ~ISTRIP;
|
|
}
|
|
} else if (info->name == litout) {
|
|
if (reversed) {
|
|
mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARENB;
|
|
mode->c_iflag |= ISTRIP;
|
|
mode->c_oflag |= OPOST;
|
|
} else {
|
|
mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
|
|
mode->c_iflag &= ~ISTRIP;
|
|
mode->c_oflag &= ~OPOST;
|
|
}
|
|
} else if (info->name == raw || info->name == cooked) {
|
|
if ((info->name[0] == 'r' && reversed)
|
|
|| (info->name[0] == 'c' && !reversed)) {
|
|
/* Cooked mode. */
|
|
mode->c_iflag |= BRKINT | IGNPAR | ISTRIP | ICRNL | IXON;
|
|
mode->c_oflag |= OPOST;
|
|
mode->c_lflag |= ISIG | ICANON;
|
|
#if VMIN == VEOF
|
|
mode->c_cc[VEOF] = CEOF;
|
|
#endif
|
|
#if VTIME == VEOL
|
|
mode->c_cc[VEOL] = CEOL;
|
|
#endif
|
|
} else {
|
|
/* Raw mode. */
|
|
mode->c_iflag = 0;
|
|
mode->c_oflag &= ~OPOST;
|
|
mode->c_lflag &= ~(ISIG | ICANON
|
|
#ifdef XCASE
|
|
| XCASE
|
|
#endif
|
|
);
|
|
mode->c_cc[VMIN] = 1;
|
|
mode->c_cc[VTIME] = 0;
|
|
}
|
|
}
|
|
#ifdef IXANY
|
|
else if (info->name == decctlq) {
|
|
if (reversed)
|
|
mode->c_iflag |= IXANY;
|
|
else
|
|
mode->c_iflag &= ~IXANY;
|
|
}
|
|
#endif
|
|
#ifdef TABDLY
|
|
else if (info->name == stty_tabs) {
|
|
if (reversed)
|
|
mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB3;
|
|
else
|
|
mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB0;
|
|
}
|
|
#else
|
|
# ifdef OXTABS
|
|
else if (info->name == stty_tabs) {
|
|
if (reversed)
|
|
mode->c_oflag = mode->c_oflag | OXTABS;
|
|
else
|
|
mode->c_oflag = mode->c_oflag & ~OXTABS;
|
|
}
|
|
# endif
|
|
#endif
|
|
#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
|
|
else if (info->name == stty_lcase || info->name == stty_LCASE) {
|
|
if (reversed) {
|
|
mode->c_lflag &= ~XCASE;
|
|
mode->c_iflag &= ~IUCLC;
|
|
mode->c_oflag &= ~OLCUC;
|
|
} else {
|
|
mode->c_lflag |= XCASE;
|
|
mode->c_iflag |= IUCLC;
|
|
mode->c_oflag |= OLCUC;
|
|
}
|
|
}
|
|
#endif
|
|
else if (info->name == stty_crt)
|
|
mode->c_lflag |= ECHOE
|
|
#ifdef ECHOCTL
|
|
| ECHOCTL
|
|
#endif
|
|
#ifdef ECHOKE
|
|
| ECHOKE
|
|
#endif
|
|
;
|
|
else if (info->name == stty_dec) {
|
|
mode->c_cc[VINTR] = 3; /* ^C */
|
|
mode->c_cc[VERASE] = 127; /* DEL */
|
|
mode->c_cc[VKILL] = 21; /* ^U */
|
|
mode->c_lflag |= ECHOE
|
|
#ifdef ECHOCTL
|
|
| ECHOCTL
|
|
#endif
|
|
#ifdef ECHOKE
|
|
| ECHOKE
|
|
#endif
|
|
;
|
|
#ifdef IXANY
|
|
mode->c_iflag &= ~IXANY;
|
|
#endif
|
|
}
|
|
} else if (reversed)
|
|
*bitsp = *bitsp & ~info->mask & ~info->bits;
|
|
else
|
|
*bitsp = (*bitsp & ~info->mask) | info->bits;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
set_control_char(const struct control_info *info, const char *arg,
|
|
struct termios *mode)
|
|
{
|
|
unsigned char value;
|
|
|
|
if (info->name == stty_min || info->name == stty_time)
|
|
value = parse_number(arg, stty_suffixes);
|
|
else if (arg[0] == '\0' || arg[1] == '\0')
|
|
value = arg[0];
|
|
else if (STREQ(arg, "^-") || STREQ(arg, "undef"))
|
|
value = _POSIX_VDISABLE;
|
|
else if (arg[0] == '^' && arg[1] != '\0') { /* Ignore any trailing junk. */
|
|
if (arg[1] == '?')
|
|
value = 127;
|
|
else
|
|
value = arg[1] & ~0140; /* Non-letters get weird results. */
|
|
} else
|
|
value = parse_number(arg, stty_suffixes);
|
|
mode->c_cc[info->offset] = value;
|
|
}
|
|
|
|
static void
|
|
set_speed(enum speed_setting type, const char *arg, struct termios *mode)
|
|
{
|
|
speed_t baud;
|
|
|
|
baud = string_to_baud(arg);
|
|
if (type == input_speed || type == both_speeds)
|
|
cfsetispeed(mode, baud);
|
|
if (type == output_speed || type == both_speeds)
|
|
cfsetospeed(mode, baud);
|
|
}
|
|
|
|
#ifdef TIOCGWINSZ
|
|
|
|
static int get_win_size(int fd, struct winsize *win)
|
|
{
|
|
int err = ioctl(fd, TIOCGWINSZ, (char *) win);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void
|
|
set_window_size(int rows, int cols, int fd, const char *device_name)
|
|
{
|
|
struct winsize win;
|
|
|
|
if (get_win_size(fd, &win)) {
|
|
if (errno != EINVAL)
|
|
perror_msg_and_die("%s", device_name);
|
|
memset(&win, 0, sizeof(win));
|
|
}
|
|
|
|
if (rows >= 0)
|
|
win.ws_row = rows;
|
|
if (cols >= 0)
|
|
win.ws_col = cols;
|
|
|
|
# ifdef TIOCSSIZE
|
|
/* Alexander Dupuy <dupuy@cs.columbia.edu> wrote:
|
|
The following code deals with a bug in the SunOS 4.x (and 3.x?) kernel.
|
|
This comment from sys/ttold.h describes Sun's twisted logic - a better
|
|
test would have been (ts_lines > 64k || ts_cols > 64k || ts_cols == 0).
|
|
At any rate, the problem is gone in Solaris 2.x. */
|
|
|
|
if (win.ws_row == 0 || win.ws_col == 0) {
|
|
struct ttysize ttysz;
|
|
|
|
ttysz.ts_lines = win.ws_row;
|
|
ttysz.ts_cols = win.ws_col;
|
|
|
|
win.ws_row = 1;
|
|
win.ws_col = 1;
|
|
|
|
if (ioctl(fd, TIOCSWINSZ, (char *) &win))
|
|
perror_msg_and_die("%s", device_name);
|
|
|
|
if (ioctl(fd, TIOCSSIZE, (char *) &ttysz))
|
|
perror_msg_and_die("%s", device_name);
|
|
return;
|
|
}
|
|
# endif
|
|
|
|
if (ioctl(fd, TIOCSWINSZ, (char *) &win))
|
|
perror_msg_and_die("%s", device_name);
|
|
}
|
|
|
|
static void display_window_size(int fancy, int fd, const char *device_name)
|
|
{
|
|
struct winsize win;
|
|
|
|
if (get_win_size(fd, &win)) {
|
|
if (errno != EINVAL)
|
|
perror_msg_and_die("%s", device_name);
|
|
if (!fancy)
|
|
perror_msg_and_die("%s: no size information for this device",
|
|
device_name);
|
|
} else {
|
|
wrapf(fancy ? "rows %d; columns %d;" : "%d %d\n",
|
|
win.ws_row, win.ws_col);
|
|
if (!fancy)
|
|
current_col = 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static int screen_columns(void)
|
|
{
|
|
#ifdef TIOCGWINSZ
|
|
struct winsize win;
|
|
|
|
/* With Solaris 2.[123], this ioctl fails and errno is set to
|
|
EINVAL for telnet (but not rlogin) sessions.
|
|
On ISC 3.0, it fails for the console and the serial port
|
|
(but it works for ptys).
|
|
It can also fail on any system when stdout isn't a tty.
|
|
In case of any failure, just use the default. */
|
|
if (get_win_size(STDOUT_FILENO, &win) == 0 && win.ws_col > 0)
|
|
return win.ws_col;
|
|
#endif
|
|
|
|
if (getenv("COLUMNS"))
|
|
return atoi(getenv("COLUMNS"));
|
|
return 80;
|
|
}
|
|
|
|
static tcflag_t *mode_type_flag(enum mode_type type, struct termios *mode)
|
|
{
|
|
switch (type) {
|
|
case control:
|
|
return &mode->c_cflag;
|
|
|
|
case input:
|
|
return &mode->c_iflag;
|
|
|
|
case output:
|
|
return &mode->c_oflag;
|
|
|
|
case local:
|
|
return &mode->c_lflag;
|
|
|
|
default: /* combination: */
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
display_settings(enum output_type output_type, struct termios *mode,
|
|
int fd, const char *device_name)
|
|
{
|
|
switch (output_type) {
|
|
case changed:
|
|
display_changed(mode);
|
|
break;
|
|
|
|
case all:
|
|
display_all(mode, fd, device_name);
|
|
break;
|
|
|
|
case recoverable:
|
|
display_recoverable(mode);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void display_changed(struct termios *mode)
|
|
{
|
|
int i;
|
|
int empty_line;
|
|
tcflag_t *bitsp;
|
|
unsigned long mask;
|
|
enum mode_type prev_type = control;
|
|
|
|
display_speed(mode, 1);
|
|
#ifdef HAVE_C_LINE
|
|
wrapf("line = %d;", mode->c_line);
|
|
#endif
|
|
putchar('\n');
|
|
current_col = 0;
|
|
|
|
empty_line = 1;
|
|
for (i = 0; control_info[i].name != stty_min; ++i) {
|
|
if (mode->c_cc[control_info[i].offset] == control_info[i].saneval)
|
|
continue;
|
|
/* If swtch is the same as susp, don't print both. */
|
|
#if VSWTCH == VSUSP
|
|
if (control_info[i].name == stty_swtch)
|
|
continue;
|
|
#endif
|
|
/* If eof uses the same slot as min, only print whichever applies. */
|
|
#if VEOF == VMIN
|
|
if ((mode->c_lflag & ICANON) == 0
|
|
&& (control_info[i].name == stty_eof
|
|
|| control_info[i].name == stty_eol)) continue;
|
|
#endif
|
|
|
|
empty_line = 0;
|
|
wrapf("%s = %s;", control_info[i].name,
|
|
visible(mode->c_cc[control_info[i].offset]));
|
|
}
|
|
if ((mode->c_lflag & ICANON) == 0) {
|
|
wrapf("min = %d; time = %d;\n", (int) mode->c_cc[VMIN],
|
|
(int) mode->c_cc[VTIME]);
|
|
} else if (empty_line == 0)
|
|
putchar('\n');
|
|
current_col = 0;
|
|
|
|
empty_line = 1;
|
|
for (i = 0; i < NUM_mode_info; ++i) {
|
|
if (mode_info[i].flags & OMIT)
|
|
continue;
|
|
if (mode_info[i].type != prev_type) {
|
|
if (empty_line == 0) {
|
|
putchar('\n');
|
|
current_col = 0;
|
|
empty_line = 1;
|
|
}
|
|
prev_type = mode_info[i].type;
|
|
}
|
|
|
|
bitsp = mode_type_flag(mode_info[i].type, mode);
|
|
mask = mode_info[i].mask ? mode_info[i].mask : mode_info[i].bits;
|
|
if ((*bitsp & mask) == mode_info[i].bits) {
|
|
if (mode_info[i].flags & SANE_UNSET) {
|
|
wrapf("%s", mode_info[i].name);
|
|
empty_line = 0;
|
|
}
|
|
}
|
|
else if ((mode_info[i].flags & (SANE_SET | REV)) ==
|
|
(SANE_SET | REV)) {
|
|
wrapf("-%s", mode_info[i].name);
|
|
empty_line = 0;
|
|
}
|
|
}
|
|
if (empty_line == 0)
|
|
putchar('\n');
|
|
current_col = 0;
|
|
}
|
|
|
|
static void
|
|
display_all(struct termios *mode, int fd, const char *device_name)
|
|
{
|
|
int i;
|
|
tcflag_t *bitsp;
|
|
unsigned long mask;
|
|
enum mode_type prev_type = control;
|
|
|
|
display_speed(mode, 1);
|
|
#ifdef TIOCGWINSZ
|
|
display_window_size(1, fd, device_name);
|
|
#endif
|
|
#ifdef HAVE_C_LINE
|
|
wrapf("line = %d;", mode->c_line);
|
|
#endif
|
|
putchar('\n');
|
|
current_col = 0;
|
|
|
|
for (i = 0; control_info[i].name != stty_min; ++i) {
|
|
/* If swtch is the same as susp, don't print both. */
|
|
#if VSWTCH == VSUSP
|
|
if (control_info[i].name == stty_swtch)
|
|
continue;
|
|
#endif
|
|
/* If eof uses the same slot as min, only print whichever applies. */
|
|
#if VEOF == VMIN
|
|
if ((mode->c_lflag & ICANON) == 0
|
|
&& (control_info[i].name == stty_eof
|
|
|| control_info[i].name == stty_eol)) continue;
|
|
#endif
|
|
wrapf("%s = %s;", control_info[i].name,
|
|
visible(mode->c_cc[control_info[i].offset]));
|
|
}
|
|
#if VEOF == VMIN
|
|
if ((mode->c_lflag & ICANON) == 0)
|
|
#endif
|
|
wrapf("min = %d; time = %d;", mode->c_cc[VMIN], mode->c_cc[VTIME]);
|
|
if (current_col != 0)
|
|
putchar('\n');
|
|
current_col = 0;
|
|
|
|
for (i = 0; i < NUM_mode_info; ++i) {
|
|
if (mode_info[i].flags & OMIT)
|
|
continue;
|
|
if (mode_info[i].type != prev_type) {
|
|
putchar('\n');
|
|
current_col = 0;
|
|
prev_type = mode_info[i].type;
|
|
}
|
|
|
|
bitsp = mode_type_flag(mode_info[i].type, mode);
|
|
mask = mode_info[i].mask ? mode_info[i].mask : mode_info[i].bits;
|
|
if ((*bitsp & mask) == mode_info[i].bits)
|
|
wrapf("%s", mode_info[i].name);
|
|
else if (mode_info[i].flags & REV)
|
|
wrapf("-%s", mode_info[i].name);
|
|
}
|
|
putchar('\n');
|
|
current_col = 0;
|
|
}
|
|
|
|
static void display_speed(struct termios *mode, int fancy)
|
|
{
|
|
if (cfgetispeed(mode) == 0 || cfgetispeed(mode) == cfgetospeed(mode))
|
|
wrapf(fancy ? "speed %lu baud;" : "%lu\n",
|
|
baud_to_value(cfgetospeed(mode)));
|
|
else
|
|
wrapf(fancy ? "ispeed %lu baud; ospeed %lu baud;" : "%lu %lu\n",
|
|
baud_to_value(cfgetispeed(mode)),
|
|
baud_to_value(cfgetospeed(mode)));
|
|
if (!fancy)
|
|
current_col = 0;
|
|
}
|
|
|
|
static void display_recoverable(struct termios *mode)
|
|
{
|
|
int i;
|
|
|
|
printf("%lx:%lx:%lx:%lx",
|
|
(unsigned long) mode->c_iflag, (unsigned long) mode->c_oflag,
|
|
(unsigned long) mode->c_cflag, (unsigned long) mode->c_lflag);
|
|
for (i = 0; i < NCCS; ++i)
|
|
printf(":%x", (unsigned int) mode->c_cc[i]);
|
|
putchar('\n');
|
|
}
|
|
|
|
static int recover_mode(char *arg, struct termios *mode)
|
|
{
|
|
int i, n;
|
|
unsigned int chr;
|
|
unsigned long iflag, oflag, cflag, lflag;
|
|
|
|
/* Scan into temporaries since it is too much trouble to figure out
|
|
the right format for `tcflag_t'. */
|
|
if (sscanf(arg, "%lx:%lx:%lx:%lx%n",
|
|
&iflag, &oflag, &cflag, &lflag, &n) != 4)
|
|
return 0;
|
|
mode->c_iflag = iflag;
|
|
mode->c_oflag = oflag;
|
|
mode->c_cflag = cflag;
|
|
mode->c_lflag = lflag;
|
|
arg += n;
|
|
for (i = 0; i < NCCS; ++i) {
|
|
if (sscanf(arg, ":%x%n", &chr, &n) != 1)
|
|
return 0;
|
|
mode->c_cc[i] = chr;
|
|
arg += n;
|
|
}
|
|
|
|
/* Fail if there are too many fields. */
|
|
if (*arg != '\0')
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
struct speed_map {
|
|
speed_t speed; /* Internal form. */
|
|
unsigned long value; /* Numeric value. */
|
|
};
|
|
|
|
static const struct speed_map speeds[] = {
|
|
{B0, 0},
|
|
{B50, 50},
|
|
{B75, 75},
|
|
{B110, 110},
|
|
{B134, 134},
|
|
{B150, 150},
|
|
{B200, 200},
|
|
{B300, 300},
|
|
{B600, 600},
|
|
{B1200, 1200},
|
|
{B1800, 1800},
|
|
{B2400, 2400},
|
|
{B4800, 4800},
|
|
{B9600, 9600},
|
|
{B19200, 19200},
|
|
{B38400, 38400},
|
|
#ifdef B57600
|
|
{B57600, 57600},
|
|
#endif
|
|
#ifdef B115200
|
|
{B115200, 115200},
|
|
#endif
|
|
#ifdef B230400
|
|
{B230400, 230400},
|
|
#endif
|
|
#ifdef B460800
|
|
{B460800, 460800},
|
|
#endif
|
|
};
|
|
|
|
static const int NUM_SPEEDS = (sizeof(speeds) / sizeof(struct speed_map));
|
|
|
|
static speed_t string_to_baud(const char *arg)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < NUM_SPEEDS; ++i)
|
|
if (parse_number(arg, 0) == speeds[i].value)
|
|
return speeds[i].speed;
|
|
return (speed_t) - 1;
|
|
}
|
|
|
|
static unsigned long baud_to_value(speed_t speed)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < NUM_SPEEDS; ++i)
|
|
if (speed == speeds[i].speed)
|
|
return speeds[i].value;
|
|
return 0;
|
|
}
|
|
|
|
static void sane_mode(struct termios *mode)
|
|
{
|
|
int i;
|
|
tcflag_t *bitsp;
|
|
|
|
for (i = 0; i < NUM_control_info; ++i) {
|
|
#if VMIN == VEOF
|
|
if (control_info[i].name == stty_min)
|
|
break;
|
|
#endif
|
|
mode->c_cc[control_info[i].offset] = control_info[i].saneval;
|
|
}
|
|
|
|
for (i = 0; i < NUM_mode_info; ++i) {
|
|
if (mode_info[i].flags & SANE_SET) {
|
|
bitsp = mode_type_flag(mode_info[i].type, mode);
|
|
*bitsp = (*bitsp & ~mode_info[i].mask) | mode_info[i].bits;
|
|
} else if (mode_info[i].flags & SANE_UNSET) {
|
|
bitsp = mode_type_flag(mode_info[i].type, mode);
|
|
*bitsp = *bitsp & ~mode_info[i].mask & ~mode_info[i].bits;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Return a string that is the printable representation of character CH. */
|
|
/* Adapted from `cat' by Torbjorn Granlund. */
|
|
|
|
static const char *visible(unsigned int ch)
|
|
{
|
|
static char buf[10];
|
|
char *bpout = buf;
|
|
|
|
if (ch == _POSIX_VDISABLE)
|
|
return "<undef>";
|
|
|
|
if (ch >= 32) {
|
|
if (ch < 127)
|
|
*bpout++ = ch;
|
|
else if (ch == 127) {
|
|
*bpout++ = '^';
|
|
*bpout++ = '?';
|
|
} else {
|
|
*bpout++ = 'M', *bpout++ = '-';
|
|
if (ch >= 128 + 32) {
|
|
if (ch < 128 + 127)
|
|
*bpout++ = ch - 128;
|
|
else {
|
|
*bpout++ = '^';
|
|
*bpout++ = '?';
|
|
}
|
|
} else {
|
|
*bpout++ = '^';
|
|
*bpout++ = ch - 128 + 64;
|
|
}
|
|
}
|
|
} else {
|
|
*bpout++ = '^';
|
|
*bpout++ = ch + 64;
|
|
}
|
|
*bpout = '\0';
|
|
return (const char *) buf;
|
|
}
|
|
|
|
#ifdef TEST
|
|
unsigned long parse_number(const char *numstr,
|
|
const struct suffix_mult *suffixes)
|
|
{
|
|
const struct suffix_mult *sm;
|
|
unsigned long int ret;
|
|
int len;
|
|
char *end;
|
|
|
|
ret = strtoul(numstr, &end, 10);
|
|
if (numstr == end)
|
|
error_msg_and_die("invalid number `%s'", numstr);
|
|
while (end[0] != '\0') {
|
|
sm = suffixes;
|
|
while ( sm != 0 ) {
|
|
if(sm->suffix) {
|
|
len = strlen(sm->suffix);
|
|
if (strncmp(sm->suffix, end, len) == 0) {
|
|
ret *= sm->mult;
|
|
end += len;
|
|
break;
|
|
}
|
|
sm++;
|
|
|
|
} else
|
|
sm = 0;
|
|
}
|
|
if (sm == 0)
|
|
error_msg_and_die("invalid number `%s'", numstr);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
const char *applet_name = "stty";
|
|
|
|
static void verror_msg(const char *s, va_list p)
|
|
{
|
|
fflush(stdout);
|
|
fprintf(stderr, "%s: ", applet_name);
|
|
vfprintf(stderr, s, p);
|
|
}
|
|
|
|
extern void error_msg_and_die(const char *s, ...)
|
|
{
|
|
va_list p;
|
|
|
|
va_start(p, s);
|
|
verror_msg(s, p);
|
|
va_end(p);
|
|
putc('\n', stderr);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
static void vperror_msg(const char *s, va_list p)
|
|
{
|
|
int err=errno;
|
|
verror_msg(s, p);
|
|
if (*s) s = ": ";
|
|
fprintf(stderr, "%s%s\n", s, strerror(err));
|
|
}
|
|
|
|
extern void perror_msg_and_die(const char *s, ...)
|
|
{
|
|
va_list p;
|
|
|
|
va_start(p, s);
|
|
vperror_msg(s, p);
|
|
va_end(p);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
Local Variables:
|
|
c-file-style: "linux"
|
|
c-basic-offset: 4
|
|
tab-width: 4
|
|
End:
|
|
*/
|