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- /* vi: set sw=4 ts=4: */
- /* stty -- change and print terminal line settings
- Copyright (C) 1990-1999 Free Software Foundation, Inc.
- Licensed under GPLv2 or later, see file LICENSE in this source tree.
- */
- /* Usage: stty [-ag] [-F device] [setting...]
- Options:
- -a Write all current settings to stdout in human-readable form.
- -g Write all current settings to stdout in stty-readable form.
- -F Open and use the specified device instead of stdin
- If no args are given, write to stdout the baud rate and settings that
- have been changed from their defaults. Mode reading and changes
- are done on the specified device, or stdin if none was specified.
- David MacKenzie <djm@gnu.ai.mit.edu>
- Special for busybox ported by Vladimir Oleynik <dzo@simtreas.ru> 2001
- */
- //usage:#define stty_trivial_usage
- //usage: "[-a|g] [-F DEVICE] [SETTING]..."
- //usage:#define stty_full_usage "\n\n"
- //usage: "Without arguments, prints baud rate, line discipline,\n"
- //usage: "and deviations from stty sane\n"
- //usage: "\n -F DEVICE Open device instead of stdin"
- //usage: "\n -a Print all current settings in human-readable form"
- //usage: "\n -g Print in stty-readable form"
- //usage: "\n [SETTING] See manpage"
- #include "libbb.h"
- #ifndef _POSIX_VDISABLE
- # define _POSIX_VDISABLE ((unsigned char) 0)
- #endif
- #define Control(c) ((c) & 0x1f)
- /* Canonical values for control characters */
- #ifndef CINTR
- # define CINTR Control('c')
- #endif
- #ifndef CQUIT
- # define CQUIT 28
- #endif
- #ifndef CERASE
- # define CERASE 127
- #endif
- #ifndef CKILL
- # define CKILL Control('u')
- #endif
- #ifndef CEOF
- # define CEOF Control('d')
- #endif
- #ifndef CEOL
- # define CEOL _POSIX_VDISABLE
- #endif
- #ifndef CSTART
- # define CSTART Control('q')
- #endif
- #ifndef CSTOP
- # define CSTOP Control('s')
- #endif
- #ifndef CSUSP
- # define CSUSP Control('z')
- #endif
- #if defined(VEOL2) && !defined(CEOL2)
- # define CEOL2 _POSIX_VDISABLE
- #endif
- /* glibc-2.12.1 uses only VSWTC name */
- #if defined(VSWTC) && !defined(VSWTCH)
- # define VSWTCH VSWTC
- #endif
- /* ISC renamed swtch to susp for termios, but we'll accept either name */
- #if defined(VSUSP) && !defined(VSWTCH)
- # define VSWTCH VSUSP
- # define CSWTCH CSUSP
- #endif
- #if defined(VSWTCH) && !defined(CSWTCH)
- # define CSWTCH _POSIX_VDISABLE
- #endif
- /* SunOS 5.3 loses (^Z doesn't work) if 'swtch' is the same as 'susp'.
- So the default is to disable 'swtch.' */
- #if defined(__sparc__) && defined(__svr4__)
- # undef CSWTCH
- # define CSWTCH _POSIX_VDISABLE
- #endif
- #if defined(VWERSE) && !defined(VWERASE) /* AIX-3.2.5 */
- # define VWERASE VWERSE
- #endif
- #if defined(VDSUSP) && !defined(CDSUSP)
- # define CDSUSP Control('y')
- #endif
- #if !defined(VREPRINT) && defined(VRPRNT) /* Irix 4.0.5 */
- # define VREPRINT VRPRNT
- #endif
- #if defined(VREPRINT) && !defined(CRPRNT)
- # define CRPRNT Control('r')
- #endif
- #if defined(VWERASE) && !defined(CWERASE)
- # define CWERASE Control('w')
- #endif
- #if defined(VLNEXT) && !defined(CLNEXT)
- # define CLNEXT Control('v')
- #endif
- #if defined(VDISCARD) && !defined(VFLUSHO)
- # define VFLUSHO VDISCARD
- #endif
- #if defined(VFLUSH) && !defined(VFLUSHO) /* Ultrix 4.2 */
- # define VFLUSHO VFLUSH
- #endif
- #if defined(CTLECH) && !defined(ECHOCTL) /* Ultrix 4.3 */
- # define ECHOCTL CTLECH
- #endif
- #if defined(TCTLECH) && !defined(ECHOCTL) /* Ultrix 4.2 */
- # define ECHOCTL TCTLECH
- #endif
- #if defined(CRTKIL) && !defined(ECHOKE) /* Ultrix 4.2 and 4.3 */
- # define ECHOKE CRTKIL
- #endif
- #if defined(VFLUSHO) && !defined(CFLUSHO)
- # define CFLUSHO Control('o')
- #endif
- #if defined(VSTATUS) && !defined(CSTATUS)
- # define CSTATUS Control('t')
- #endif
- /* Save us from #ifdef forest plague */
- #ifndef BSDLY
- # define BSDLY 0
- #endif
- #ifndef CIBAUD
- # define CIBAUD 0
- #endif
- #ifndef CRDLY
- # define CRDLY 0
- #endif
- #ifndef CRTSCTS
- # define CRTSCTS 0
- #endif
- #ifndef ECHOCTL
- # define ECHOCTL 0
- #endif
- #ifndef ECHOKE
- # define ECHOKE 0
- #endif
- #ifndef ECHOPRT
- # define ECHOPRT 0
- #endif
- #ifndef FFDLY
- # define FFDLY 0
- #endif
- #ifndef IEXTEN
- # define IEXTEN 0
- #endif
- #ifndef IMAXBEL
- # define IMAXBEL 0
- #endif
- #ifndef IUCLC
- # define IUCLC 0
- #endif
- #ifndef IXANY
- # define IXANY 0
- #endif
- #ifndef NLDLY
- # define NLDLY 0
- #endif
- #ifndef OCRNL
- # define OCRNL 0
- #endif
- #ifndef OFDEL
- # define OFDEL 0
- #endif
- #ifndef OFILL
- # define OFILL 0
- #endif
- #ifndef OLCUC
- # define OLCUC 0
- #endif
- #ifndef ONLCR
- # define ONLCR 0
- #endif
- #ifndef ONLRET
- # define ONLRET 0
- #endif
- #ifndef ONOCR
- # define ONOCR 0
- #endif
- #ifndef OXTABS
- # define OXTABS 0
- #endif
- #ifndef TABDLY
- # define TABDLY 0
- #endif
- #ifndef TAB1
- # define TAB1 0
- #endif
- #ifndef TAB2
- # define TAB2 0
- #endif
- #ifndef TOSTOP
- # define TOSTOP 0
- #endif
- #ifndef VDSUSP
- # define VDSUSP 0
- #endif
- #ifndef VEOL2
- # define VEOL2 0
- #endif
- #ifndef VFLUSHO
- # define VFLUSHO 0
- #endif
- #ifndef VLNEXT
- # define VLNEXT 0
- #endif
- #ifndef VREPRINT
- # define VREPRINT 0
- #endif
- #ifndef VSTATUS
- # define VSTATUS 0
- #endif
- #ifndef VSWTCH
- # define VSWTCH 0
- #endif
- #ifndef VTDLY
- # define VTDLY 0
- #endif
- #ifndef VWERASE
- # define VWERASE 0
- #endif
- #ifndef XCASE
- # define XCASE 0
- #endif
- #ifndef IUTF8
- # define IUTF8 0
- #endif
- /* Which speeds to set */
- enum speed_setting {
- input_speed, output_speed, both_speeds
- };
- /* Which member(s) of 'struct termios' a mode uses */
- enum {
- control, input, output, local, combination
- };
- static tcflag_t *get_ptr_to_tcflag(unsigned type, const struct termios *mode)
- {
- static const uint8_t tcflag_offsets[] ALIGN1 = {
- offsetof(struct termios, c_cflag), /* control */
- offsetof(struct termios, c_iflag), /* input */
- offsetof(struct termios, c_oflag), /* output */
- offsetof(struct termios, c_lflag) /* local */
- };
- if (type <= local) {
- return (tcflag_t*) (((char*)mode) + tcflag_offsets[type]);
- }
- return NULL;
- }
- /* Flags for 'struct mode_info' */
- #define SANE_SET 1 /* Set in 'sane' mode */
- #define SANE_UNSET 2 /* Unset in 'sane' mode */
- #define REV 4 /* Can be turned off by prepending '-' */
- #define OMIT 8 /* Don't display value */
- /* Each mode.
- * This structure should be kept as small as humanly possible.
- */
- struct mode_info {
- const uint8_t type; /* Which structure element to change */
- const uint8_t flags; /* Setting and display options */
- /* only these values are ever used, so... */
- #if (CSIZE | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY) < 0x100
- const uint8_t mask;
- #elif (CSIZE | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY) < 0x10000
- const uint16_t mask;
- #else
- const tcflag_t mask; /* Other bits to turn off for this mode */
- #endif
- /* was using short here, but ppc32 was unhappy */
- const tcflag_t bits; /* Bits to set for this mode */
- };
- enum {
- /* Must match mode_name[] and mode_info[] order! */
- IDX_evenp = 0,
- IDX_parity,
- IDX_oddp,
- IDX_nl,
- IDX_ek,
- IDX_sane,
- IDX_cooked,
- IDX_raw,
- IDX_pass8,
- IDX_litout,
- IDX_cbreak,
- IDX_crt,
- IDX_dec,
- #if IXANY
- IDX_decctlq,
- #endif
- #if TABDLY || OXTABS
- IDX_tabs,
- #endif
- #if XCASE && IUCLC && OLCUC
- IDX_lcase,
- IDX_LCASE,
- #endif
- };
- #define MI_ENTRY(N,T,F,B,M) N "\0"
- /* Mode names given on command line */
- static const char mode_name[] =
- 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
- ;
- #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[] =
- 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[] = {
- /* 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;
- }
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