1545 lines
43 KiB
C
1545 lines
43 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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Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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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 <dzo@simtreas.ru> 2001
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*/
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//config:config STTY
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//config: bool "stty (8.6 kb)"
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//config: default y
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//config: help
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//config: stty is used to change and print terminal line settings.
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//applet:IF_STTY(APPLET(stty, BB_DIR_BIN, BB_SUID_DROP))
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//kbuild:lib-$(CONFIG_STTY) += stty.o
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//usage:#define stty_trivial_usage
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//usage: "[-a|g] [-F DEVICE] [SETTING]..."
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//usage:#define stty_full_usage "\n\n"
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//usage: "Without arguments, prints baud rate, line discipline,\n"
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//usage: "and deviations from stty sane\n"
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//usage: "\n -F DEVICE Open device instead of stdin"
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//usage: "\n -a Print all current settings in human-readable form"
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//usage: "\n -g Print in stty-readable form"
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//usage: "\n [SETTING] See manpage"
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#include "libbb.h"
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#include "common_bufsiz.h"
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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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/* glibc-2.12.1 uses only VSWTC name */
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#if defined(VSWTC) && !defined(VSWTCH)
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# define VSWTCH VSWTC
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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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/* Save us from #ifdef forest plague */
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#ifndef BSDLY
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# define BSDLY 0
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#endif
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#ifndef CIBAUD
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# define CIBAUD 0
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#endif
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#ifndef CRDLY
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# define CRDLY 0
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#endif
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#ifndef CRTSCTS
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# define CRTSCTS 0
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#endif
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#ifndef ECHOCTL
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# define ECHOCTL 0
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#endif
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#ifndef ECHOKE
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# define ECHOKE 0
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#endif
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#ifndef ECHOPRT
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# define ECHOPRT 0
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#endif
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#ifndef FFDLY
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# define FFDLY 0
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#endif
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#ifndef IEXTEN
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# define IEXTEN 0
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#endif
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#ifndef IMAXBEL
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# define IMAXBEL 0
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#endif
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#ifndef IUCLC
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# define IUCLC 0
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#endif
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#ifndef IXANY
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# define IXANY 0
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#endif
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#ifndef NLDLY
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# define NLDLY 0
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#endif
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#ifndef OCRNL
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# define OCRNL 0
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#endif
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#ifndef OFDEL
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# define OFDEL 0
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#endif
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#ifndef OFILL
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# define OFILL 0
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#endif
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#ifndef OLCUC
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# define OLCUC 0
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#endif
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#ifndef ONLCR
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# define ONLCR 0
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#endif
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#ifndef ONLRET
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# define ONLRET 0
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#endif
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#ifndef ONOCR
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# define ONOCR 0
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#endif
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#ifndef OXTABS
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# define OXTABS 0
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#endif
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#ifndef TABDLY
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# define TABDLY 0
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#endif
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#ifndef TAB1
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# define TAB1 0
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#endif
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#ifndef TAB2
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# define TAB2 0
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#endif
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#ifndef TOSTOP
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# define TOSTOP 0
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#endif
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#ifndef VDSUSP
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# define VDSUSP 0
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#endif
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#ifndef VEOL2
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# define VEOL2 0
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#endif
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#ifndef VFLUSHO
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# define VFLUSHO 0
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#endif
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#ifndef VLNEXT
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# define VLNEXT 0
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#endif
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#ifndef VREPRINT
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# define VREPRINT 0
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#endif
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#ifndef VSTATUS
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# define VSTATUS 0
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#endif
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#ifndef VSWTCH
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# define VSWTCH 0
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#endif
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#ifndef VTDLY
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# define VTDLY 0
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#endif
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#ifndef VWERASE
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# define VWERASE 0
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#endif
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#ifndef XCASE
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# define XCASE 0
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#endif
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#ifndef IUTF8
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# define IUTF8 0
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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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/* Which member(s) of 'struct termios' a mode uses */
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enum {
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control, input, output, local, combination
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};
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static tcflag_t *get_ptr_to_tcflag(unsigned type, const struct termios *mode)
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{
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static const uint8_t tcflag_offsets[] ALIGN1 = {
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offsetof(struct termios, c_cflag), /* control */
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offsetof(struct termios, c_iflag), /* input */
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offsetof(struct termios, c_oflag), /* output */
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offsetof(struct termios, c_lflag) /* local */
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};
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if (type <= local) {
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return (tcflag_t*) (((char*)mode) + tcflag_offsets[type]);
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}
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return NULL;
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}
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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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* This structure should be kept as small as humanly possible.
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*/
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struct mode_info {
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const uint8_t type; /* Which structure element to change */
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const uint8_t flags; /* Setting and display options */
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/* only these values are ever used, so... */
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#if (CSIZE | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY) < 0x100
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const uint8_t mask;
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#elif (CSIZE | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY) < 0x10000
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const uint16_t mask;
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#else
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const tcflag_t mask; /* Other bits to turn off for this mode */
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#endif
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/* was using short here, but ppc32 was unhappy */
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const tcflag_t bits; /* Bits to set for this mode */
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};
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enum {
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/* Must match mode_name[] and mode_info[] order! */
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IDX_evenp = 0,
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IDX_parity,
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IDX_oddp,
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IDX_nl,
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IDX_ek,
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IDX_sane,
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IDX_cooked,
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IDX_raw,
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IDX_pass8,
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IDX_litout,
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IDX_cbreak,
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IDX_crt,
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IDX_dec,
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#if IXANY
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IDX_decctlq,
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#endif
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#if TABDLY || OXTABS
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IDX_tabs,
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#endif
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#if XCASE && IUCLC && OLCUC
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IDX_lcase,
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IDX_LCASE,
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#endif
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};
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#define MI_ENTRY(N,T,F,B,M) N "\0"
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/* Mode names given on command line */
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static const char mode_name[] ALIGN1 =
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MI_ENTRY("evenp", combination, REV | OMIT, 0, 0 )
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MI_ENTRY("parity", combination, REV | OMIT, 0, 0 )
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MI_ENTRY("oddp", combination, REV | OMIT, 0, 0 )
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MI_ENTRY("nl", combination, REV | OMIT, 0, 0 )
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MI_ENTRY("ek", combination, OMIT, 0, 0 )
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MI_ENTRY("sane", combination, OMIT, 0, 0 )
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MI_ENTRY("cooked", combination, REV | OMIT, 0, 0 )
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MI_ENTRY("raw", combination, REV | OMIT, 0, 0 )
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MI_ENTRY("pass8", combination, REV | OMIT, 0, 0 )
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MI_ENTRY("litout", combination, REV | OMIT, 0, 0 )
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MI_ENTRY("cbreak", combination, REV | OMIT, 0, 0 )
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MI_ENTRY("crt", combination, OMIT, 0, 0 )
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MI_ENTRY("dec", combination, OMIT, 0, 0 )
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#if IXANY
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MI_ENTRY("decctlq", combination, REV | OMIT, 0, 0 )
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#endif
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#if TABDLY || OXTABS
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MI_ENTRY("tabs", combination, REV | OMIT, 0, 0 )
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#endif
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#if XCASE && IUCLC && OLCUC
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MI_ENTRY("lcase", combination, REV | OMIT, 0, 0 )
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MI_ENTRY("LCASE", combination, REV | OMIT, 0, 0 )
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#endif
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MI_ENTRY("parenb", control, REV, PARENB, 0 )
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MI_ENTRY("parodd", control, REV, PARODD, 0 )
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MI_ENTRY("cs5", control, 0, CS5, CSIZE)
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MI_ENTRY("cs6", control, 0, CS6, CSIZE)
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MI_ENTRY("cs7", control, 0, CS7, CSIZE)
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MI_ENTRY("cs8", control, 0, CS8, CSIZE)
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MI_ENTRY("hupcl", control, REV, HUPCL, 0 )
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MI_ENTRY("hup", control, REV | OMIT, HUPCL, 0 )
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MI_ENTRY("cstopb", control, REV, CSTOPB, 0 )
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MI_ENTRY("cread", control, SANE_SET | REV, CREAD, 0 )
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MI_ENTRY("clocal", control, REV, CLOCAL, 0 )
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#if CRTSCTS
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MI_ENTRY("crtscts", control, REV, CRTSCTS, 0 )
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#endif
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MI_ENTRY("ignbrk", input, SANE_UNSET | REV, IGNBRK, 0 )
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MI_ENTRY("brkint", input, SANE_SET | REV, BRKINT, 0 )
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MI_ENTRY("ignpar", input, REV, IGNPAR, 0 )
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MI_ENTRY("parmrk", input, REV, PARMRK, 0 )
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MI_ENTRY("inpck", input, REV, INPCK, 0 )
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MI_ENTRY("istrip", input, REV, ISTRIP, 0 )
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MI_ENTRY("inlcr", input, SANE_UNSET | REV, INLCR, 0 )
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MI_ENTRY("igncr", input, SANE_UNSET | REV, IGNCR, 0 )
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MI_ENTRY("icrnl", input, SANE_SET | REV, ICRNL, 0 )
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MI_ENTRY("ixon", input, REV, IXON, 0 )
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MI_ENTRY("ixoff", input, SANE_UNSET | REV, IXOFF, 0 )
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MI_ENTRY("tandem", input, OMIT | REV, IXOFF, 0 )
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#if IUCLC
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MI_ENTRY("iuclc", input, SANE_UNSET | REV, IUCLC, 0 )
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#endif
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#if IXANY
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MI_ENTRY("ixany", input, SANE_UNSET | REV, IXANY, 0 )
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#endif
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#if IMAXBEL
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MI_ENTRY("imaxbel", input, SANE_SET | REV, IMAXBEL, 0 )
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#endif
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#if IUTF8
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MI_ENTRY("iutf8", input, SANE_UNSET | REV, IUTF8, 0 )
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#endif
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MI_ENTRY("opost", output, SANE_SET | REV, OPOST, 0 )
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#if OLCUC
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MI_ENTRY("olcuc", output, SANE_UNSET | REV, OLCUC, 0 )
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#endif
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#if OCRNL
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MI_ENTRY("ocrnl", output, SANE_UNSET | REV, OCRNL, 0 )
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#endif
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#if ONLCR
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MI_ENTRY("onlcr", output, SANE_SET | REV, ONLCR, 0 )
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#endif
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#if ONOCR
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MI_ENTRY("onocr", output, SANE_UNSET | REV, ONOCR, 0 )
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#endif
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#if ONLRET
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MI_ENTRY("onlret", output, SANE_UNSET | REV, ONLRET, 0 )
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#endif
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#if OFILL
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MI_ENTRY("ofill", output, SANE_UNSET | REV, OFILL, 0 )
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#endif
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#if OFDEL
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MI_ENTRY("ofdel", output, SANE_UNSET | REV, OFDEL, 0 )
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#endif
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#if NLDLY
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MI_ENTRY("nl1", output, SANE_UNSET, NL1, NLDLY)
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MI_ENTRY("nl0", output, SANE_SET, NL0, NLDLY)
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#endif
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#if CRDLY
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MI_ENTRY("cr3", output, SANE_UNSET, CR3, CRDLY)
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MI_ENTRY("cr2", output, SANE_UNSET, CR2, CRDLY)
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MI_ENTRY("cr1", output, SANE_UNSET, CR1, CRDLY)
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MI_ENTRY("cr0", output, SANE_SET, CR0, CRDLY)
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#endif
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#if TABDLY
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MI_ENTRY("tab3", output, SANE_UNSET, TAB3, TABDLY)
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# if TAB2
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MI_ENTRY("tab2", output, SANE_UNSET, TAB2, TABDLY)
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# endif
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# if TAB1
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MI_ENTRY("tab1", output, SANE_UNSET, TAB1, TABDLY)
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# endif
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MI_ENTRY("tab0", output, SANE_SET, TAB0, TABDLY)
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#else
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# if OXTABS
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MI_ENTRY("tab3", output, SANE_UNSET, OXTABS, 0 )
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# endif
|
|
#endif
|
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|
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#if BSDLY
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MI_ENTRY("bs1", output, SANE_UNSET, BS1, BSDLY)
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MI_ENTRY("bs0", output, SANE_SET, BS0, BSDLY)
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#endif
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#if VTDLY
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MI_ENTRY("vt1", output, SANE_UNSET, VT1, VTDLY)
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MI_ENTRY("vt0", output, SANE_SET, VT0, VTDLY)
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#endif
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#if FFDLY
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MI_ENTRY("ff1", output, SANE_UNSET, FF1, FFDLY)
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MI_ENTRY("ff0", output, SANE_SET, FF0, FFDLY)
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|
#endif
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MI_ENTRY("isig", local, SANE_SET | REV, ISIG, 0 )
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MI_ENTRY("icanon", local, SANE_SET | REV, ICANON, 0 )
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#if IEXTEN
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MI_ENTRY("iexten", local, SANE_SET | REV, IEXTEN, 0 )
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#endif
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|
MI_ENTRY("echo", local, SANE_SET | REV, ECHO, 0 )
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MI_ENTRY("echoe", local, SANE_SET | REV, ECHOE, 0 )
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MI_ENTRY("crterase", local, OMIT | REV, ECHOE, 0 )
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MI_ENTRY("echok", local, SANE_SET | REV, ECHOK, 0 )
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MI_ENTRY("echonl", local, SANE_UNSET | REV, ECHONL, 0 )
|
|
MI_ENTRY("noflsh", local, SANE_UNSET | REV, NOFLSH, 0 )
|
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#if XCASE
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MI_ENTRY("xcase", local, SANE_UNSET | REV, XCASE, 0 )
|
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#endif
|
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#if TOSTOP
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MI_ENTRY("tostop", local, SANE_UNSET | REV, TOSTOP, 0 )
|
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#endif
|
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#if ECHOPRT
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MI_ENTRY("echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 )
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MI_ENTRY("prterase", local, OMIT | REV, ECHOPRT, 0 )
|
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#endif
|
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#if ECHOCTL
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MI_ENTRY("echoctl", local, SANE_SET | REV, ECHOCTL, 0 )
|
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MI_ENTRY("ctlecho", local, OMIT | REV, ECHOCTL, 0 )
|
|
#endif
|
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#if ECHOKE
|
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MI_ENTRY("echoke", local, SANE_SET | REV, ECHOKE, 0 )
|
|
MI_ENTRY("crtkill", local, OMIT | REV, ECHOKE, 0 )
|
|
#endif
|
|
;
|
|
|
|
#undef MI_ENTRY
|
|
#define MI_ENTRY(N,T,F,B,M) { T, F, M, B },
|
|
|
|
static const struct mode_info mode_info[] = {
|
|
/* This should be verbatim cut-n-paste copy of the above MI_ENTRYs */
|
|
MI_ENTRY("evenp", combination, REV | OMIT, 0, 0 )
|
|
MI_ENTRY("parity", combination, REV | OMIT, 0, 0 )
|
|
MI_ENTRY("oddp", combination, REV | OMIT, 0, 0 )
|
|
MI_ENTRY("nl", combination, REV | OMIT, 0, 0 )
|
|
MI_ENTRY("ek", combination, OMIT, 0, 0 )
|
|
MI_ENTRY("sane", combination, OMIT, 0, 0 )
|
|
MI_ENTRY("cooked", combination, REV | OMIT, 0, 0 )
|
|
MI_ENTRY("raw", combination, REV | OMIT, 0, 0 )
|
|
MI_ENTRY("pass8", combination, REV | OMIT, 0, 0 )
|
|
MI_ENTRY("litout", combination, REV | OMIT, 0, 0 )
|
|
MI_ENTRY("cbreak", combination, REV | OMIT, 0, 0 )
|
|
MI_ENTRY("crt", combination, OMIT, 0, 0 )
|
|
MI_ENTRY("dec", combination, OMIT, 0, 0 )
|
|
#if IXANY
|
|
MI_ENTRY("decctlq", combination, REV | OMIT, 0, 0 )
|
|
#endif
|
|
#if TABDLY || OXTABS
|
|
MI_ENTRY("tabs", combination, REV | OMIT, 0, 0 )
|
|
#endif
|
|
#if XCASE && IUCLC && OLCUC
|
|
MI_ENTRY("lcase", combination, REV | OMIT, 0, 0 )
|
|
MI_ENTRY("LCASE", combination, REV | OMIT, 0, 0 )
|
|
#endif
|
|
MI_ENTRY("parenb", control, REV, PARENB, 0 )
|
|
MI_ENTRY("parodd", control, REV, PARODD, 0 )
|
|
MI_ENTRY("cs5", control, 0, CS5, CSIZE)
|
|
MI_ENTRY("cs6", control, 0, CS6, CSIZE)
|
|
MI_ENTRY("cs7", control, 0, CS7, CSIZE)
|
|
MI_ENTRY("cs8", control, 0, CS8, CSIZE)
|
|
MI_ENTRY("hupcl", control, REV, HUPCL, 0 )
|
|
MI_ENTRY("hup", control, REV | OMIT, HUPCL, 0 )
|
|
MI_ENTRY("cstopb", control, REV, CSTOPB, 0 )
|
|
MI_ENTRY("cread", control, SANE_SET | REV, CREAD, 0 )
|
|
MI_ENTRY("clocal", control, REV, CLOCAL, 0 )
|
|
#if CRTSCTS
|
|
MI_ENTRY("crtscts", control, REV, CRTSCTS, 0 )
|
|
#endif
|
|
MI_ENTRY("ignbrk", input, SANE_UNSET | REV, IGNBRK, 0 )
|
|
MI_ENTRY("brkint", input, SANE_SET | REV, BRKINT, 0 )
|
|
MI_ENTRY("ignpar", input, REV, IGNPAR, 0 )
|
|
MI_ENTRY("parmrk", input, REV, PARMRK, 0 )
|
|
MI_ENTRY("inpck", input, REV, INPCK, 0 )
|
|
MI_ENTRY("istrip", input, REV, ISTRIP, 0 )
|
|
MI_ENTRY("inlcr", input, SANE_UNSET | REV, INLCR, 0 )
|
|
MI_ENTRY("igncr", input, SANE_UNSET | REV, IGNCR, 0 )
|
|
MI_ENTRY("icrnl", input, SANE_SET | REV, ICRNL, 0 )
|
|
MI_ENTRY("ixon", input, REV, IXON, 0 )
|
|
MI_ENTRY("ixoff", input, SANE_UNSET | REV, IXOFF, 0 )
|
|
MI_ENTRY("tandem", input, OMIT | REV, IXOFF, 0 )
|
|
#if IUCLC
|
|
MI_ENTRY("iuclc", input, SANE_UNSET | REV, IUCLC, 0 )
|
|
#endif
|
|
#if IXANY
|
|
MI_ENTRY("ixany", input, SANE_UNSET | REV, IXANY, 0 )
|
|
#endif
|
|
#if IMAXBEL
|
|
MI_ENTRY("imaxbel", input, SANE_SET | REV, IMAXBEL, 0 )
|
|
#endif
|
|
#if IUTF8
|
|
MI_ENTRY("iutf8", input, SANE_UNSET | REV, IUTF8, 0 )
|
|
#endif
|
|
MI_ENTRY("opost", output, SANE_SET | REV, OPOST, 0 )
|
|
#if OLCUC
|
|
MI_ENTRY("olcuc", output, SANE_UNSET | REV, OLCUC, 0 )
|
|
#endif
|
|
#if OCRNL
|
|
MI_ENTRY("ocrnl", output, SANE_UNSET | REV, OCRNL, 0 )
|
|
#endif
|
|
#if ONLCR
|
|
MI_ENTRY("onlcr", output, SANE_SET | REV, ONLCR, 0 )
|
|
#endif
|
|
#if ONOCR
|
|
MI_ENTRY("onocr", output, SANE_UNSET | REV, ONOCR, 0 )
|
|
#endif
|
|
#if ONLRET
|
|
MI_ENTRY("onlret", output, SANE_UNSET | REV, ONLRET, 0 )
|
|
#endif
|
|
#if OFILL
|
|
MI_ENTRY("ofill", output, SANE_UNSET | REV, OFILL, 0 )
|
|
#endif
|
|
#if OFDEL
|
|
MI_ENTRY("ofdel", output, SANE_UNSET | REV, OFDEL, 0 )
|
|
#endif
|
|
#if NLDLY
|
|
MI_ENTRY("nl1", output, SANE_UNSET, NL1, NLDLY)
|
|
MI_ENTRY("nl0", output, SANE_SET, NL0, NLDLY)
|
|
#endif
|
|
#if CRDLY
|
|
MI_ENTRY("cr3", output, SANE_UNSET, CR3, CRDLY)
|
|
MI_ENTRY("cr2", output, SANE_UNSET, CR2, CRDLY)
|
|
MI_ENTRY("cr1", output, SANE_UNSET, CR1, CRDLY)
|
|
MI_ENTRY("cr0", output, SANE_SET, CR0, CRDLY)
|
|
#endif
|
|
|
|
#if TABDLY
|
|
MI_ENTRY("tab3", output, SANE_UNSET, TAB3, TABDLY)
|
|
# if TAB2
|
|
MI_ENTRY("tab2", output, SANE_UNSET, TAB2, TABDLY)
|
|
# endif
|
|
# if TAB1
|
|
MI_ENTRY("tab1", output, SANE_UNSET, TAB1, TABDLY)
|
|
# endif
|
|
MI_ENTRY("tab0", output, SANE_SET, TAB0, TABDLY)
|
|
#else
|
|
# if OXTABS
|
|
MI_ENTRY("tab3", output, SANE_UNSET, OXTABS, 0 )
|
|
# endif
|
|
#endif
|
|
|
|
#if BSDLY
|
|
MI_ENTRY("bs1", output, SANE_UNSET, BS1, BSDLY)
|
|
MI_ENTRY("bs0", output, SANE_SET, BS0, BSDLY)
|
|
#endif
|
|
#if VTDLY
|
|
MI_ENTRY("vt1", output, SANE_UNSET, VT1, VTDLY)
|
|
MI_ENTRY("vt0", output, SANE_SET, VT0, VTDLY)
|
|
#endif
|
|
#if FFDLY
|
|
MI_ENTRY("ff1", output, SANE_UNSET, FF1, FFDLY)
|
|
MI_ENTRY("ff0", output, SANE_SET, FF0, FFDLY)
|
|
#endif
|
|
MI_ENTRY("isig", local, SANE_SET | REV, ISIG, 0 )
|
|
MI_ENTRY("icanon", local, SANE_SET | REV, ICANON, 0 )
|
|
#if IEXTEN
|
|
MI_ENTRY("iexten", local, SANE_SET | REV, IEXTEN, 0 )
|
|
#endif
|
|
MI_ENTRY("echo", local, SANE_SET | REV, ECHO, 0 )
|
|
MI_ENTRY("echoe", local, SANE_SET | REV, ECHOE, 0 )
|
|
MI_ENTRY("crterase", local, OMIT | REV, ECHOE, 0 )
|
|
MI_ENTRY("echok", local, SANE_SET | REV, ECHOK, 0 )
|
|
MI_ENTRY("echonl", local, SANE_UNSET | REV, ECHONL, 0 )
|
|
MI_ENTRY("noflsh", local, SANE_UNSET | REV, NOFLSH, 0 )
|
|
#if XCASE
|
|
MI_ENTRY("xcase", local, SANE_UNSET | REV, XCASE, 0 )
|
|
#endif
|
|
#if TOSTOP
|
|
MI_ENTRY("tostop", local, SANE_UNSET | REV, TOSTOP, 0 )
|
|
#endif
|
|
#if ECHOPRT
|
|
MI_ENTRY("echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 )
|
|
MI_ENTRY("prterase", local, OMIT | REV, ECHOPRT, 0 )
|
|
#endif
|
|
#if ECHOCTL
|
|
MI_ENTRY("echoctl", local, SANE_SET | REV, ECHOCTL, 0 )
|
|
MI_ENTRY("ctlecho", local, OMIT | REV, ECHOCTL, 0 )
|
|
#endif
|
|
#if ECHOKE
|
|
MI_ENTRY("echoke", local, SANE_SET | REV, ECHOKE, 0 )
|
|
MI_ENTRY("crtkill", local, OMIT | REV, ECHOKE, 0 )
|
|
#endif
|
|
};
|
|
|
|
enum {
|
|
NUM_mode_info = ARRAY_SIZE(mode_info)
|
|
};
|
|
|
|
|
|
/* Control characters */
|
|
struct control_info {
|
|
const uint8_t saneval; /* Value to set for 'stty sane' */
|
|
const uint8_t offset; /* Offset in c_cc */
|
|
};
|
|
|
|
enum {
|
|
/* Must match control_name[] and control_info[] order! */
|
|
CIDX_intr = 0,
|
|
CIDX_quit,
|
|
CIDX_erase,
|
|
CIDX_kill,
|
|
CIDX_eof,
|
|
CIDX_eol,
|
|
#if VEOL2
|
|
CIDX_eol2,
|
|
#endif
|
|
#if VSWTCH
|
|
CIDX_swtch,
|
|
#endif
|
|
CIDX_start,
|
|
CIDX_stop,
|
|
CIDX_susp,
|
|
#if VDSUSP
|
|
CIDX_dsusp,
|
|
#endif
|
|
#if VREPRINT
|
|
CIDX_rprnt,
|
|
#endif
|
|
#if VWERASE
|
|
CIDX_werase,
|
|
#endif
|
|
#if VLNEXT
|
|
CIDX_lnext,
|
|
#endif
|
|
#if VFLUSHO
|
|
CIDX_flush,
|
|
#endif
|
|
#if VSTATUS
|
|
CIDX_status,
|
|
#endif
|
|
CIDX_min,
|
|
CIDX_time,
|
|
};
|
|
|
|
#define CI_ENTRY(n,s,o) n "\0"
|
|
|
|
/* Name given on command line */
|
|
static const char control_name[] ALIGN1 =
|
|
CI_ENTRY("intr", CINTR, VINTR )
|
|
CI_ENTRY("quit", CQUIT, VQUIT )
|
|
CI_ENTRY("erase", CERASE, VERASE )
|
|
CI_ENTRY("kill", CKILL, VKILL )
|
|
CI_ENTRY("eof", CEOF, VEOF )
|
|
CI_ENTRY("eol", CEOL, VEOL )
|
|
#if VEOL2
|
|
CI_ENTRY("eol2", CEOL2, VEOL2 )
|
|
#endif
|
|
#if VSWTCH
|
|
CI_ENTRY("swtch", CSWTCH, VSWTCH )
|
|
#endif
|
|
CI_ENTRY("start", CSTART, VSTART )
|
|
CI_ENTRY("stop", CSTOP, VSTOP )
|
|
CI_ENTRY("susp", CSUSP, VSUSP )
|
|
#if VDSUSP
|
|
CI_ENTRY("dsusp", CDSUSP, VDSUSP )
|
|
#endif
|
|
#if VREPRINT
|
|
CI_ENTRY("rprnt", CRPRNT, VREPRINT)
|
|
#endif
|
|
#if VWERASE
|
|
CI_ENTRY("werase", CWERASE, VWERASE )
|
|
#endif
|
|
#if VLNEXT
|
|
CI_ENTRY("lnext", CLNEXT, VLNEXT )
|
|
#endif
|
|
#if VFLUSHO
|
|
CI_ENTRY("flush", CFLUSHO, VFLUSHO )
|
|
#endif
|
|
#if VSTATUS
|
|
CI_ENTRY("status", CSTATUS, VSTATUS )
|
|
#endif
|
|
/* These must be last because of the display routines */
|
|
CI_ENTRY("min", 1, VMIN )
|
|
CI_ENTRY("time", 0, VTIME )
|
|
;
|
|
|
|
#undef CI_ENTRY
|
|
#define CI_ENTRY(n,s,o) { s, o },
|
|
|
|
static const struct control_info control_info[] ALIGN2 = {
|
|
/* This should be verbatim cut-n-paste copy of the above CI_ENTRYs */
|
|
CI_ENTRY("intr", CINTR, VINTR )
|
|
CI_ENTRY("quit", CQUIT, VQUIT )
|
|
CI_ENTRY("erase", CERASE, VERASE )
|
|
CI_ENTRY("kill", CKILL, VKILL )
|
|
CI_ENTRY("eof", CEOF, VEOF )
|
|
CI_ENTRY("eol", CEOL, VEOL )
|
|
#if VEOL2
|
|
CI_ENTRY("eol2", CEOL2, VEOL2 )
|
|
#endif
|
|
#if VSWTCH
|
|
CI_ENTRY("swtch", CSWTCH, VSWTCH )
|
|
#endif
|
|
CI_ENTRY("start", CSTART, VSTART )
|
|
CI_ENTRY("stop", CSTOP, VSTOP )
|
|
CI_ENTRY("susp", CSUSP, VSUSP )
|
|
#if VDSUSP
|
|
CI_ENTRY("dsusp", CDSUSP, VDSUSP )
|
|
#endif
|
|
#if VREPRINT
|
|
CI_ENTRY("rprnt", CRPRNT, VREPRINT)
|
|
#endif
|
|
#if VWERASE
|
|
CI_ENTRY("werase", CWERASE, VWERASE )
|
|
#endif
|
|
#if VLNEXT
|
|
CI_ENTRY("lnext", CLNEXT, VLNEXT )
|
|
#endif
|
|
#if VFLUSHO
|
|
CI_ENTRY("flush", CFLUSHO, VFLUSHO )
|
|
#endif
|
|
#if VSTATUS
|
|
CI_ENTRY("status", CSTATUS, VSTATUS )
|
|
#endif
|
|
/* These must be last because of the display routines */
|
|
CI_ENTRY("min", 1, VMIN )
|
|
CI_ENTRY("time", 0, VTIME )
|
|
};
|
|
|
|
enum {
|
|
NUM_control_info = ARRAY_SIZE(control_info)
|
|
};
|
|
|
|
|
|
struct globals {
|
|
const char *device_name;
|
|
/* The width of the screen, for output wrapping */
|
|
unsigned max_col;
|
|
/* Current position, to know when to wrap */
|
|
unsigned current_col;
|
|
char buf[10];
|
|
} FIX_ALIASING;
|
|
#define G (*(struct globals*)bb_common_bufsiz1)
|
|
#define INIT_G() do { \
|
|
G.device_name = bb_msg_standard_input; \
|
|
G.max_col = 80; \
|
|
} while (0)
|
|
|
|
static void set_speed_or_die(enum speed_setting type, const char *arg,
|
|
struct termios *mode)
|
|
{
|
|
speed_t baud;
|
|
|
|
baud = tty_value_to_baud(xatou(arg));
|
|
|
|
if (type != output_speed) { /* either input or both */
|
|
cfsetispeed(mode, baud);
|
|
}
|
|
if (type != input_speed) { /* either output or both */
|
|
cfsetospeed(mode, baud);
|
|
}
|
|
}
|
|
|
|
static NORETURN void perror_on_device_and_die(const char *fmt)
|
|
{
|
|
bb_perror_msg_and_die(fmt, G.device_name);
|
|
}
|
|
|
|
static void perror_on_device(const char *fmt)
|
|
{
|
|
bb_perror_msg(fmt, G.device_name);
|
|
}
|
|
|
|
/* Print format string MESSAGE and optional args.
|
|
Wrap to next line first if it won't fit.
|
|
Print a space first unless MESSAGE will start a new line */
|
|
static void wrapf(const char *message, ...)
|
|
{
|
|
char buf[128];
|
|
va_list args;
|
|
unsigned buflen;
|
|
|
|
va_start(args, message);
|
|
buflen = vsnprintf(buf, sizeof(buf), message, args);
|
|
va_end(args);
|
|
/* We seem to be called only with suitable lengths, but check if
|
|
somebody failed to adhere to this assumption just to be sure. */
|
|
if (!buflen || buflen >= sizeof(buf)) return;
|
|
|
|
if (G.current_col > 0) {
|
|
G.current_col++;
|
|
if (buf[0] != '\n') {
|
|
if (G.current_col + buflen >= G.max_col) {
|
|
bb_putchar('\n');
|
|
G.current_col = 0;
|
|
} else
|
|
bb_putchar(' ');
|
|
}
|
|
}
|
|
fputs(buf, stdout);
|
|
G.current_col += buflen;
|
|
if (buf[buflen-1] == '\n')
|
|
G.current_col = 0;
|
|
}
|
|
|
|
static void newline(void)
|
|
{
|
|
if (G.current_col != 0)
|
|
wrapf("\n");
|
|
}
|
|
|
|
#ifdef TIOCGWINSZ
|
|
static void set_window_size(int rows, int cols)
|
|
{
|
|
struct winsize win = { 0, 0, 0, 0 };
|
|
|
|
if (ioctl(STDIN_FILENO, TIOCGWINSZ, &win)) {
|
|
if (errno != EINVAL) {
|
|
goto bail;
|
|
}
|
|
memset(&win, 0, sizeof(win));
|
|
}
|
|
|
|
if (rows >= 0)
|
|
win.ws_row = rows;
|
|
if (cols >= 0)
|
|
win.ws_col = cols;
|
|
|
|
if (ioctl(STDIN_FILENO, TIOCSWINSZ, (char *) &win))
|
|
bail:
|
|
perror_on_device("%s");
|
|
}
|
|
#endif
|
|
|
|
static void display_window_size(int fancy)
|
|
{
|
|
const char *fmt_str = "%s\0%s: no size information for this device";
|
|
unsigned width, height;
|
|
|
|
if (get_terminal_width_height(STDIN_FILENO, &width, &height)) {
|
|
if ((errno != EINVAL) || ((fmt_str += 2), !fancy)) {
|
|
perror_on_device(fmt_str);
|
|
}
|
|
} else {
|
|
wrapf(fancy ? "rows %u; columns %u;" : "%u %u\n",
|
|
height, width);
|
|
}
|
|
}
|
|
|
|
static const struct suffix_mult stty_suffixes[] = {
|
|
{ "b", 512 },
|
|
{ "k", 1024 },
|
|
{ "B", 1024 },
|
|
{ "", 0 }
|
|
};
|
|
|
|
static const struct mode_info *find_mode(const char *name)
|
|
{
|
|
int i = index_in_strings(mode_name, name);
|
|
return i >= 0 ? &mode_info[i] : NULL;
|
|
}
|
|
|
|
static const struct control_info *find_control(const char *name)
|
|
{
|
|
int i = index_in_strings(control_name, name);
|
|
return i >= 0 ? &control_info[i] : NULL;
|
|
}
|
|
|
|
enum {
|
|
param_need_arg = 0x80,
|
|
param_line = 1 | 0x80,
|
|
param_rows = 2 | 0x80,
|
|
param_cols = 3 | 0x80,
|
|
param_columns = 4 | 0x80,
|
|
param_size = 5,
|
|
param_speed = 6,
|
|
param_ispeed = 7 | 0x80,
|
|
param_ospeed = 8 | 0x80,
|
|
};
|
|
|
|
static int find_param(const char *name)
|
|
{
|
|
static const char params[] ALIGN1 =
|
|
"line\0" /* 1 */
|
|
"rows\0" /* 2 */
|
|
"cols\0" /* 3 */
|
|
"columns\0" /* 4 */
|
|
"size\0" /* 5 */
|
|
"speed\0" /* 6 */
|
|
"ispeed\0"
|
|
"ospeed\0";
|
|
int i = index_in_strings(params, name) + 1;
|
|
if (i == 0)
|
|
return 0;
|
|
if (i != 5 && i != 6)
|
|
i |= 0x80;
|
|
return i;
|
|
}
|
|
|
|
static int recover_mode(const char *arg, struct termios *mode)
|
|
{
|
|
int i, n;
|
|
unsigned 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;
|
|
}
|
|
|
|
static void display_recoverable(const struct termios *mode,
|
|
int UNUSED_PARAM dummy)
|
|
{
|
|
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]);
|
|
bb_putchar('\n');
|
|
}
|
|
|
|
static void display_speed(const struct termios *mode, int fancy)
|
|
{
|
|
//____________________ 01234567 8 9
|
|
const char *fmt_str = "%lu %lu\n\0ispeed %lu baud; ospeed %lu baud;";
|
|
unsigned long ispeed, ospeed;
|
|
|
|
ispeed = cfgetispeed(mode);
|
|
ospeed = cfgetospeed(mode);
|
|
if (ispeed == 0 || ispeed == ospeed) {
|
|
ispeed = ospeed; /* in case ispeed was 0 */
|
|
//________ 0123 4 5 6 7 8 9
|
|
fmt_str = "%lu\n\0\0\0\0\0speed %lu baud;";
|
|
}
|
|
if (fancy) fmt_str += 9;
|
|
wrapf(fmt_str, tty_baud_to_value(ispeed), tty_baud_to_value(ospeed));
|
|
}
|
|
|
|
static void do_display(const struct termios *mode, int all)
|
|
{
|
|
int i;
|
|
tcflag_t *bitsp;
|
|
unsigned long mask;
|
|
int prev_type = control;
|
|
|
|
display_speed(mode, 1);
|
|
if (all)
|
|
display_window_size(1);
|
|
#ifdef __linux__
|
|
wrapf("line = %u;\n", mode->c_line);
|
|
#else
|
|
newline();
|
|
#endif
|
|
|
|
for (i = 0; i != CIDX_min; ++i) {
|
|
char ch;
|
|
/* If swtch is the same as susp, don't print both */
|
|
#if VSWTCH == VSUSP
|
|
if (i == CIDX_swtch)
|
|
continue;
|
|
#endif
|
|
/* If eof uses the same slot as min, only print whichever applies */
|
|
#if VEOF == VMIN
|
|
if (!(mode->c_lflag & ICANON)
|
|
&& (i == CIDX_eof || i == CIDX_eol)
|
|
) {
|
|
continue;
|
|
}
|
|
#endif
|
|
ch = mode->c_cc[control_info[i].offset];
|
|
if (ch == _POSIX_VDISABLE)
|
|
strcpy(G.buf, "<undef>");
|
|
else
|
|
visible(ch, G.buf, 0);
|
|
wrapf("%s = %s;", nth_string(control_name, i), G.buf);
|
|
}
|
|
#if VEOF == VMIN
|
|
if ((mode->c_lflag & ICANON) == 0)
|
|
#endif
|
|
wrapf("min = %u; time = %u;", mode->c_cc[VMIN], mode->c_cc[VTIME]);
|
|
newline();
|
|
|
|
for (i = 0; i < NUM_mode_info; ++i) {
|
|
if (mode_info[i].flags & OMIT)
|
|
continue;
|
|
if (mode_info[i].type != prev_type) {
|
|
newline();
|
|
prev_type = mode_info[i].type;
|
|
}
|
|
|
|
bitsp = get_ptr_to_tcflag(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 (all || (mode_info[i].flags & SANE_UNSET))
|
|
wrapf("-%s"+1, nth_string(mode_name, i));
|
|
} else {
|
|
if ((all && mode_info[i].flags & REV)
|
|
|| (!all && (mode_info[i].flags & (SANE_SET | REV)) == (SANE_SET | REV))
|
|
) {
|
|
wrapf("-%s", nth_string(mode_name, i));
|
|
}
|
|
}
|
|
}
|
|
newline();
|
|
}
|
|
|
|
static void sane_mode(struct termios *mode)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < NUM_control_info; ++i) {
|
|
#if VMIN == VEOF
|
|
if (i == CIDX_min)
|
|
break;
|
|
#endif
|
|
mode->c_cc[control_info[i].offset] = control_info[i].saneval;
|
|
}
|
|
|
|
for (i = 0; i < NUM_mode_info; ++i) {
|
|
tcflag_t val;
|
|
tcflag_t *bitsp = get_ptr_to_tcflag(mode_info[i].type, mode);
|
|
|
|
if (!bitsp)
|
|
continue;
|
|
val = *bitsp & ~((unsigned long)mode_info[i].mask);
|
|
if (mode_info[i].flags & SANE_SET) {
|
|
*bitsp = val | mode_info[i].bits;
|
|
} else
|
|
if (mode_info[i].flags & SANE_UNSET) {
|
|
*bitsp = val & ~mode_info[i].bits;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void set_mode(const struct mode_info *info, int reversed,
|
|
struct termios *mode)
|
|
{
|
|
tcflag_t *bitsp;
|
|
|
|
bitsp = get_ptr_to_tcflag(info->type, mode);
|
|
|
|
if (bitsp) {
|
|
tcflag_t val = *bitsp & ~info->mask;
|
|
if (reversed)
|
|
*bitsp = val & ~info->bits;
|
|
else
|
|
*bitsp = val | info->bits;
|
|
return;
|
|
}
|
|
|
|
/* !bitsp - it's a "combination" mode */
|
|
if (info == &mode_info[IDX_evenp] || info == &mode_info[IDX_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 == &mode_info[IDX_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 == &mode_info[IDX_nl]) {
|
|
if (reversed) {
|
|
mode->c_iflag = (mode->c_iflag | ICRNL) & ~INLCR & ~IGNCR;
|
|
mode->c_oflag = (mode->c_oflag | ONLCR) & ~OCRNL & ~ONLRET;
|
|
} else {
|
|
mode->c_iflag = mode->c_iflag & ~ICRNL;
|
|
if (ONLCR) mode->c_oflag = mode->c_oflag & ~ONLCR;
|
|
}
|
|
} else if (info == &mode_info[IDX_ek]) {
|
|
mode->c_cc[VERASE] = CERASE;
|
|
mode->c_cc[VKILL] = CKILL;
|
|
} else if (info == &mode_info[IDX_sane]) {
|
|
sane_mode(mode);
|
|
} else if (info == &mode_info[IDX_cbreak]) {
|
|
if (reversed)
|
|
mode->c_lflag |= ICANON;
|
|
else
|
|
mode->c_lflag &= ~ICANON;
|
|
} else if (info == &mode_info[IDX_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 == &mode_info[IDX_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 == &mode_info[IDX_raw] || info == &mode_info[IDX_cooked]) {
|
|
if ((info == &mode_info[IDX_raw] && reversed)
|
|
|| (info == &mode_info[IDX_cooked] && !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 | XCASE);
|
|
mode->c_cc[VMIN] = 1;
|
|
mode->c_cc[VTIME] = 0;
|
|
}
|
|
}
|
|
#if IXANY
|
|
else if (info == &mode_info[IDX_decctlq]) {
|
|
if (reversed)
|
|
mode->c_iflag |= IXANY;
|
|
else
|
|
mode->c_iflag &= ~IXANY;
|
|
}
|
|
#endif
|
|
#if TABDLY
|
|
else if (info == &mode_info[IDX_tabs]) {
|
|
if (reversed)
|
|
mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB3;
|
|
else
|
|
mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB0;
|
|
}
|
|
#endif
|
|
#if OXTABS
|
|
else if (info == &mode_info[IDX_tabs]) {
|
|
if (reversed)
|
|
mode->c_oflag |= OXTABS;
|
|
else
|
|
mode->c_oflag &= ~OXTABS;
|
|
}
|
|
#endif
|
|
#if XCASE && IUCLC && OLCUC
|
|
else if (info==&mode_info[IDX_lcase] || info==&mode_info[IDX_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 == &mode_info[IDX_crt]) {
|
|
mode->c_lflag |= ECHOE | ECHOCTL | ECHOKE;
|
|
} else if (info == &mode_info[IDX_dec]) {
|
|
mode->c_cc[VINTR] = 3; /* ^C */
|
|
mode->c_cc[VERASE] = 127; /* DEL */
|
|
mode->c_cc[VKILL] = 21; /* ^U */
|
|
mode->c_lflag |= ECHOE | ECHOCTL | ECHOKE;
|
|
if (IXANY) mode->c_iflag &= ~IXANY;
|
|
}
|
|
}
|
|
|
|
static void set_control_char_or_die(const struct control_info *info,
|
|
const char *arg, struct termios *mode)
|
|
{
|
|
unsigned char value;
|
|
|
|
if (info == &control_info[CIDX_min] || info == &control_info[CIDX_time])
|
|
value = xatoul_range_sfx(arg, 0, 0xff, stty_suffixes);
|
|
else if (arg[0] == '\0' || arg[1] == '\0')
|
|
value = arg[0];
|
|
else if (strcmp(arg, "^-") == 0 || strcmp(arg, "undef") == 0)
|
|
value = _POSIX_VDISABLE;
|
|
else if (arg[0] == '^') { /* Ignore any trailing junk (^Cjunk) */
|
|
value = arg[1] & 0x1f; /* Non-letters get weird results */
|
|
if (arg[1] == '?')
|
|
value = 127;
|
|
} else
|
|
value = xatoul_range_sfx(arg, 0, 0xff, stty_suffixes);
|
|
mode->c_cc[info->offset] = value;
|
|
}
|
|
|
|
#define STTY_require_set_attr (1 << 0)
|
|
#define STTY_speed_was_set (1 << 1)
|
|
#define STTY_verbose_output (1 << 2)
|
|
#define STTY_recoverable_output (1 << 3)
|
|
#define STTY_noargs (1 << 4)
|
|
|
|
int stty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int stty_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
struct termios mode;
|
|
void (*output_func)(const struct termios *, int);
|
|
const char *file_name = NULL;
|
|
int display_all = 0;
|
|
int stty_state;
|
|
int k;
|
|
|
|
INIT_G();
|
|
|
|
stty_state = STTY_noargs;
|
|
output_func = do_display;
|
|
|
|
/* First pass: only parse/verify command line params */
|
|
k = 0;
|
|
while (argv[++k]) {
|
|
const struct mode_info *mp;
|
|
const struct control_info *cp;
|
|
const char *arg = argv[k];
|
|
const char *argnext = argv[k+1];
|
|
int param;
|
|
|
|
if (arg[0] == '-') {
|
|
int i;
|
|
mp = find_mode(arg+1);
|
|
if (mp) {
|
|
if (!(mp->flags & REV))
|
|
goto invalid_argument;
|
|
stty_state &= ~STTY_noargs;
|
|
continue;
|
|
}
|
|
/* It is an option - parse it */
|
|
i = 0;
|
|
while (arg[++i]) {
|
|
switch (arg[i]) {
|
|
case 'a':
|
|
stty_state |= STTY_verbose_output;
|
|
output_func = do_display;
|
|
display_all = 1;
|
|
break;
|
|
case 'g':
|
|
stty_state |= STTY_recoverable_output;
|
|
output_func = display_recoverable;
|
|
break;
|
|
case 'F':
|
|
if (file_name)
|
|
bb_error_msg_and_die("only one device may be specified");
|
|
file_name = &arg[i+1]; /* "-Fdevice" ? */
|
|
if (!file_name[0]) { /* nope, "-F device" */
|
|
int p = k+1; /* argv[p] is argnext */
|
|
file_name = argnext;
|
|
if (!file_name)
|
|
bb_error_msg_and_die(bb_msg_requires_arg, "-F");
|
|
/* remove -F param from arg[vc] */
|
|
while (argv[p]) {
|
|
argv[p] = argv[p+1];
|
|
++p;
|
|
}
|
|
}
|
|
goto end_option;
|
|
default:
|
|
goto invalid_argument;
|
|
}
|
|
}
|
|
end_option:
|
|
continue;
|
|
}
|
|
|
|
mp = find_mode(arg);
|
|
if (mp) {
|
|
stty_state &= ~STTY_noargs;
|
|
continue;
|
|
}
|
|
|
|
cp = find_control(arg);
|
|
if (cp) {
|
|
if (!argnext)
|
|
bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
|
/* called for the side effect of xfunc death only */
|
|
set_control_char_or_die(cp, argnext, &mode);
|
|
stty_state &= ~STTY_noargs;
|
|
++k;
|
|
continue;
|
|
}
|
|
|
|
param = find_param(arg);
|
|
if (param & param_need_arg) {
|
|
if (!argnext)
|
|
bb_error_msg_and_die(bb_msg_requires_arg, arg);
|
|
++k;
|
|
}
|
|
|
|
switch (param) {
|
|
#ifdef __linux__
|
|
case param_line:
|
|
# ifndef TIOCGWINSZ
|
|
xatoul_range_sfx(argnext, 1, INT_MAX, stty_suffixes);
|
|
break;
|
|
# endif /* else fall-through */
|
|
#endif
|
|
#ifdef TIOCGWINSZ
|
|
case param_rows:
|
|
case param_cols:
|
|
case param_columns:
|
|
xatoul_range_sfx(argnext, 1, INT_MAX, stty_suffixes);
|
|
break;
|
|
case param_size:
|
|
#endif
|
|
case param_speed:
|
|
break;
|
|
case param_ispeed:
|
|
/* called for the side effect of xfunc death only */
|
|
set_speed_or_die(input_speed, argnext, &mode);
|
|
break;
|
|
case param_ospeed:
|
|
/* called for the side effect of xfunc death only */
|
|
set_speed_or_die(output_speed, argnext, &mode);
|
|
break;
|
|
default:
|
|
if (recover_mode(arg, &mode) == 1) break;
|
|
if (tty_value_to_baud(xatou(arg)) != (speed_t) -1) break;
|
|
invalid_argument:
|
|
bb_error_msg_and_die("invalid argument '%s'", arg);
|
|
}
|
|
stty_state &= ~STTY_noargs;
|
|
}
|
|
|
|
/* Specifying both -a and -g is an error */
|
|
if ((stty_state & (STTY_verbose_output | STTY_recoverable_output)) ==
|
|
(STTY_verbose_output | STTY_recoverable_output)
|
|
) {
|
|
bb_error_msg_and_die("-a and -g are mutually exclusive");
|
|
}
|
|
/* Specifying -a or -g with non-options is an error */
|
|
if ((stty_state & (STTY_verbose_output | STTY_recoverable_output))
|
|
&& !(stty_state & STTY_noargs)
|
|
) {
|
|
bb_error_msg_and_die("modes may not be set when -a or -g is used");
|
|
}
|
|
|
|
/* Now it is safe to start doing things */
|
|
if (file_name) {
|
|
G.device_name = file_name;
|
|
xmove_fd(xopen_nonblocking(G.device_name), STDIN_FILENO);
|
|
ndelay_off(STDIN_FILENO);
|
|
}
|
|
|
|
/* 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(STDIN_FILENO, &mode))
|
|
perror_on_device_and_die("%s");
|
|
|
|
if (stty_state & (STTY_verbose_output | STTY_recoverable_output | STTY_noargs)) {
|
|
G.max_col = get_terminal_width(STDOUT_FILENO);
|
|
output_func(&mode, display_all);
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
/* Second pass: perform actions */
|
|
k = 0;
|
|
while (argv[++k]) {
|
|
const struct mode_info *mp;
|
|
const struct control_info *cp;
|
|
const char *arg = argv[k];
|
|
const char *argnext = argv[k+1];
|
|
int param;
|
|
|
|
if (arg[0] == '-') {
|
|
mp = find_mode(arg+1);
|
|
if (mp) {
|
|
set_mode(mp, 1 /* reversed */, &mode);
|
|
stty_state |= STTY_require_set_attr;
|
|
}
|
|
/* It is an option - already parsed. Skip it */
|
|
continue;
|
|
}
|
|
|
|
mp = find_mode(arg);
|
|
if (mp) {
|
|
set_mode(mp, 0 /* non-reversed */, &mode);
|
|
stty_state |= STTY_require_set_attr;
|
|
continue;
|
|
}
|
|
|
|
cp = find_control(arg);
|
|
if (cp) {
|
|
++k;
|
|
set_control_char_or_die(cp, argnext, &mode);
|
|
stty_state |= STTY_require_set_attr;
|
|
continue;
|
|
}
|
|
|
|
param = find_param(arg);
|
|
if (param & param_need_arg) {
|
|
++k;
|
|
}
|
|
|
|
switch (param) {
|
|
#ifdef __linux__
|
|
case param_line:
|
|
mode.c_line = xatoul_sfx(argnext, stty_suffixes);
|
|
stty_state |= STTY_require_set_attr;
|
|
break;
|
|
#endif
|
|
#ifdef TIOCGWINSZ
|
|
case param_cols:
|
|
case param_columns:
|
|
set_window_size(-1, xatoul_sfx(argnext, stty_suffixes));
|
|
break;
|
|
case param_size:
|
|
display_window_size(0);
|
|
break;
|
|
case param_rows:
|
|
set_window_size(xatoul_sfx(argnext, stty_suffixes), -1);
|
|
break;
|
|
#endif
|
|
case param_speed:
|
|
display_speed(&mode, 0);
|
|
break;
|
|
case param_ispeed:
|
|
set_speed_or_die(input_speed, argnext, &mode);
|
|
stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
|
|
break;
|
|
case param_ospeed:
|
|
set_speed_or_die(output_speed, argnext, &mode);
|
|
stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
|
|
break;
|
|
default:
|
|
if (recover_mode(arg, &mode) == 1)
|
|
stty_state |= STTY_require_set_attr;
|
|
else /* true: if (tty_value_to_baud(xatou(arg)) != (speed_t) -1) */{
|
|
set_speed_or_die(both_speeds, arg, &mode);
|
|
stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
|
|
} /* else - impossible (caught in the first pass):
|
|
bb_error_msg_and_die("invalid argument '%s'", arg); */
|
|
}
|
|
}
|
|
|
|
if (stty_state & STTY_require_set_attr) {
|
|
struct termios new_mode;
|
|
|
|
if (tcsetattr(STDIN_FILENO, TCSADRAIN, &mode))
|
|
perror_on_device_and_die("%s");
|
|
|
|
/* 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(STDIN_FILENO, &new_mode))
|
|
perror_on_device_and_die("%s");
|
|
|
|
if (memcmp(&mode, &new_mode, sizeof(mode)) != 0) {
|
|
/*
|
|
* I think the below chunk is not necessary on Linux.
|
|
* If you are deleting it, also delete STTY_speed_was_set bit -
|
|
* it is only ever checked here.
|
|
*/
|
|
#if 0 /* was "if 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 ((stty_state & STTY_speed_was_set)
|
|
|| memcmp(&mode, &new_mode, sizeof(mode)) != 0)
|
|
#endif
|
|
perror_on_device_and_die("%s: cannot perform all requested operations");
|
|
}
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|