/* vi: set sw=4 ts=4: */
-/* stty -- change and print terminal line settings
- Copyright (C) 1990-1999 Free Software Foundation, Inc.
-
- Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
-*/
+/*
+ * 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
-
- */
-
-#include "busybox.h"
+ *
+ * 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
+ */
+//config:config STTY
+//config: bool "stty (8.6 kb)"
+//config: default y
+//config: help
+//config: stty is used to change and print terminal line settings.
+
+//applet:IF_STTY(APPLET_NOEXEC(stty, stty, BB_DIR_BIN, BB_SUID_DROP, stty))
+
+//kbuild:lib-$(CONFIG_STTY) += stty.o
+
+//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"
+#include "common_bufsiz.h"
#ifndef _POSIX_VDISABLE
# define _POSIX_VDISABLE ((unsigned char) 0)
#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 _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__)
+/* 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 */
+#if defined(VWERSE) && !defined(VWERASE) /* AIX-3.2.5 */
# define VWERASE VWERSE
#endif
-#if defined(VDSUSP) && !defined (CDSUSP)
+#if defined(VDSUSP) && !defined(CDSUSP)
# define CDSUSP Control('y')
#endif
#if !defined(VREPRINT) && defined(VRPRNT) /* Irix 4.0.5 */
# 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 CMSPAR
+# define CMSPAR 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 mode_type {
- /* Do NOT change the order or values, as mode_type_flag()
- * depends on them */
+/* 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;
+}
-static const char evenp [] = "evenp";
-static const char raw [] = "raw";
-static const char stty_min [] = "min";
-static const char stty_time [] = "time";
-static const char stty_swtch[] = "swtch";
-static const char stty_eol [] = "eol";
-static const char stty_eof [] = "eof";
-static const char parity [] = "parity";
-static const char stty_oddp [] = "oddp";
-static const char stty_nl [] = "nl";
-static const char stty_ek [] = "ek";
-static const char stty_sane [] = "sane";
-static const char cbreak [] = "cbreak";
-static const char stty_pass8[] = "pass8";
-static const char litout [] = "litout";
-static const char cooked [] = "cooked";
-static const char decctlq [] = "decctlq";
-static const char stty_tabs [] = "tabs";
-static const char stty_lcase[] = "lcase";
-static const char stty_LCASE[] = "LCASE";
-static const char stty_crt [] = "crt";
-static const char stty_dec [] = "dec";
-
-/* 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 `-' */
+/* 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 */
+
+/* Each mode.
+ * This structure should be kept as small as humanly possible.
+ */
struct mode_info {
- const char *name; /* Name given on command line */
- /* enum mode_type type; */
- char type; /* Which structure element to change */
- char flags; /* Setting and display options */
- unsigned short mask; /* Other bits to turn off for this mode */
- unsigned long bits; /* Bits to set for this mode */
+ 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 EMT(t) ((enum mode_type)(t))
-#define MI_ENTRY(N,T,F,B,M) { N, T, F, M, B }
+#define MI_ENTRY(N,T,F,B,M) N "\0"
+
+/* Mode names given on command line */
+static const char mode_name[] ALIGN1 =
+ 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 )
+#if CMSPAR
+ MI_ENTRY("cmspar", control, REV, CMSPAR, 0 )
+#endif
+ 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
+ MI_ENTRY("flusho", local, SANE_UNSET | REV, FLUSHO, 0 )
+#ifdef EXTPROC
+ MI_ENTRY("extproc", local, SANE_UNSET | REV, EXTPROC, 0 )
+#endif
+ ;
+
+#undef MI_ENTRY
+#define MI_ENTRY(N,T,F,B,M) { T, F, M, B },
static const struct mode_info mode_info[] = {
- 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 ),
-#ifdef 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, REV | OMIT, IXOFF, 0 ),
-#ifdef IUCLC
- MI_ENTRY("iuclc", input, SANE_UNSET | REV, IUCLC, 0 ),
-#endif
-#ifdef IXANY
- MI_ENTRY("ixany", input, SANE_UNSET | REV, IXANY, 0 ),
-#endif
-#ifdef IMAXBEL
- MI_ENTRY("imaxbel", input, SANE_SET | REV, IMAXBEL, 0 ),
-#endif
- MI_ENTRY("opost", output, SANE_SET | REV, OPOST, 0 ),
-#ifdef OLCUC
- MI_ENTRY("olcuc", output, SANE_UNSET | REV, OLCUC, 0 ),
-#endif
-#ifdef OCRNL
- MI_ENTRY("ocrnl", output, SANE_UNSET | REV, OCRNL, 0 ),
-#endif
-#ifdef ONLCR
- MI_ENTRY("onlcr", output, SANE_SET | REV, ONLCR, 0 ),
-#endif
-#ifdef ONOCR
- MI_ENTRY("onocr", output, SANE_UNSET | REV, ONOCR, 0 ),
-#endif
-#ifdef ONLRET
- MI_ENTRY("onlret", output, SANE_UNSET | REV, ONLRET, 0 ),
-#endif
-#ifdef OFILL
- MI_ENTRY("ofill", output, SANE_UNSET | REV, OFILL, 0 ),
-#endif
-#ifdef OFDEL
- MI_ENTRY("ofdel", output, SANE_UNSET | REV, OFDEL, 0 ),
-#endif
-#ifdef NLDLY
- MI_ENTRY("nl1", output, SANE_UNSET, NL1, NLDLY),
- MI_ENTRY("nl0", output, SANE_SET, NL0, NLDLY),
-#endif
-#ifdef 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
-
-#ifdef TABDLY
- MI_ENTRY("tab3", output, SANE_UNSET, TAB3, TABDLY),
- MI_ENTRY("tab2", output, SANE_UNSET, TAB2, TABDLY),
- MI_ENTRY("tab1", output, SANE_UNSET, TAB1, TABDLY),
- MI_ENTRY("tab0", output, SANE_SET, TAB0, TABDLY),
+ /* 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 )
+#if CMSPAR
+ MI_ENTRY("cmspar", control, REV, CMSPAR, 0 )
+#endif
+ 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
-# ifdef OXTABS
- MI_ENTRY("tab3", output, SANE_UNSET, OXTABS, 0 ),
+# if OXTABS
+ MI_ENTRY("tab3", output, SANE_UNSET, OXTABS, 0 )
# endif
#endif
-#ifdef BSDLY
- MI_ENTRY("bs1", output, SANE_UNSET, BS1, BSDLY),
- MI_ENTRY("bs0", output, SANE_SET, BS0, BSDLY),
-#endif
-#ifdef VTDLY
- MI_ENTRY("vt1", output, SANE_UNSET, VT1, VTDLY),
- MI_ENTRY("vt0", output, SANE_SET, VT0, VTDLY),
-#endif
-#ifdef 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 ),
-#ifdef 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, REV | OMIT, 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 ),
-#ifdef XCASE
- MI_ENTRY("xcase", local, SANE_UNSET | REV, XCASE, 0 ),
-#endif
-#ifdef TOSTOP
- MI_ENTRY("tostop", local, SANE_UNSET | REV, TOSTOP, 0 ),
-#endif
-#ifdef ECHOPRT
- MI_ENTRY("echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 ),
- MI_ENTRY("prterase", local, REV | OMIT, ECHOPRT, 0 ),
-#endif
-#ifdef ECHOCTL
- MI_ENTRY("echoctl", local, SANE_SET | REV, ECHOCTL, 0 ),
- MI_ENTRY("ctlecho", local, REV | OMIT, ECHOCTL, 0 ),
-#endif
-#ifdef ECHOKE
- MI_ENTRY("echoke", local, SANE_SET | REV, ECHOKE, 0 ),
- MI_ENTRY("crtkill", local, REV | OMIT, ECHOKE, 0 ),
-#endif
- MI_ENTRY(evenp, combination, REV | OMIT, 0, 0 ),
- MI_ENTRY(parity, combination, REV | OMIT, 0, 0 ),
- MI_ENTRY(stty_oddp, combination, REV | OMIT, 0, 0 ),
- MI_ENTRY(stty_nl, combination, REV | OMIT, 0, 0 ),
- MI_ENTRY(stty_ek, combination, OMIT, 0, 0 ),
- MI_ENTRY(stty_sane, combination, OMIT, 0, 0 ),
- MI_ENTRY(cooked, combination, REV | OMIT, 0, 0 ),
- MI_ENTRY(raw, combination, REV | OMIT, 0, 0 ),
- MI_ENTRY(stty_pass8, combination, REV | OMIT, 0, 0 ),
- MI_ENTRY(litout, combination, REV | OMIT, 0, 0 ),
- MI_ENTRY(cbreak, combination, REV | OMIT, 0, 0 ),
-#ifdef IXANY
- MI_ENTRY(decctlq, combination, REV | OMIT, 0, 0 ),
-#endif
-#if defined(TABDLY) || defined(OXTABS)
- MI_ENTRY(stty_tabs, combination, REV | OMIT, 0, 0 ),
-#endif
-#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
- MI_ENTRY(stty_lcase, combination, REV | OMIT, 0, 0 ),
- MI_ENTRY(stty_LCASE, combination, REV | OMIT, 0, 0 ),
-#endif
- MI_ENTRY(stty_crt, combination, OMIT, 0, 0 ),
- MI_ENTRY(stty_dec, combination, OMIT, 0, 0 ),
+#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
+ MI_ENTRY("flusho", local, SANE_UNSET | REV, FLUSHO, 0 )
+#ifdef EXTPROC
+ MI_ENTRY("extproc", local, SANE_UNSET | REV, EXTPROC, 0 )
+#endif
};
enum {
- NUM_mode_info = (sizeof(mode_info) / sizeof(mode_info[0]))
+ NUM_mode_info = ARRAY_SIZE(mode_info)
};
-/* Control character settings */
+
+/* Control characters */
struct control_info {
- const char *name; /* Name given on command line */
- unsigned char saneval; /* Value to set for `stty sane' */
- unsigned char offset; /* Offset in c_cc */
+ const uint8_t saneval; /* Value to set for 'stty sane' */
+ const uint8_t offset; /* Offset in c_cc */
};
-/* Control characters */
+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,
+};
-static const struct control_info control_info[] = {
- {"intr", CINTR, VINTR},
- {"quit", CQUIT, VQUIT},
- {"erase", CERASE, VERASE},
- {"kill", CKILL, VKILL},
- {stty_eof, CEOF, VEOF},
- {stty_eol, CEOL, VEOL},
-#ifdef VEOL2
- {"eol2", CEOL2, VEOL2},
+#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
-#ifdef VSWTCH
- {stty_swtch, CSWTCH, VSWTCH},
+ /* 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
- {"start", CSTART, VSTART},
- {"stop", CSTOP, VSTOP},
- {"susp", CSUSP, VSUSP},
-#ifdef VDSUSP
- {"dsusp", CDSUSP, VDSUSP},
+ CI_ENTRY("start", CSTART, VSTART )
+ CI_ENTRY("stop", CSTOP, VSTOP )
+ CI_ENTRY("susp", CSUSP, VSUSP )
+#if VDSUSP
+ CI_ENTRY("dsusp", CDSUSP, VDSUSP )
#endif
-#ifdef VREPRINT
- {"rprnt", CRPRNT, VREPRINT},
+#if VREPRINT
+ CI_ENTRY("rprnt", CRPRNT, VREPRINT)
#endif
-#ifdef VWERASE
- {"werase", CWERASE, VWERASE},
+#if VWERASE
+ CI_ENTRY("werase", CWERASE, VWERASE )
#endif
-#ifdef VLNEXT
- {"lnext", CLNEXT, VLNEXT},
+#if VLNEXT
+ CI_ENTRY("lnext", CLNEXT, VLNEXT )
#endif
-#ifdef VFLUSHO
- {"flush", CFLUSHO, VFLUSHO},
+#if VFLUSHO
+ CI_ENTRY("flush", CFLUSHO, VFLUSHO )
#endif
-#ifdef VSTATUS
- {"status", CSTATUS, VSTATUS},
+#if VSTATUS
+ CI_ENTRY("status", CSTATUS, VSTATUS )
#endif
/* These must be last because of the display routines */
- {stty_min, 1, VMIN},
- {stty_time, 0, VTIME},
+ CI_ENTRY("min", 1, VMIN )
+ CI_ENTRY("time", 0, VTIME )
};
enum {
- NUM_control_info = (sizeof(control_info) / sizeof(control_info[0]))
+ NUM_control_info = ARRAY_SIZE(control_info)
};
-/* The width of the screen, for output wrapping */
-static int max_col;
-
-/* Current position, to know when to wrap */
-static int current_col;
-
-static const char * visible(unsigned int ch);
-static int recover_mode(const char *arg, struct termios *mode);
-static int screen_columns(void);
-static void set_mode(const struct mode_info *info,
- int reversed, struct termios *mode);
-static speed_t string_to_baud(const char *arg);
-static tcflag_t* mode_type_flag(enum mode_type type, const struct termios *mode);
-static void display_all(const struct termios *mode);
-static void display_changed(const struct termios *mode);
-static void display_recoverable(const struct termios *mode);
-static void display_speed(const struct termios *mode, int fancy);
-static void display_window_size(int fancy);
-static void sane_mode(struct termios *mode);
-static void set_control_char(const struct control_info *info,
- const char *arg, struct termios *mode);
-static void set_speed(enum speed_setting type,
- const char *arg, struct termios *mode);
-static void set_window_size(int rows, int cols);
-
-static const char *device_name = bb_msg_standard_input;
-
-static ATTRIBUTE_NORETURN void perror_on_device(const char *fmt)
+
+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;
+} FIX_ALIASING;
+#define G (*(struct globals*)bb_common_bufsiz1)
+#define INIT_G() do { \
+ setup_common_bufsiz(); \
+ G.device_name = bb_msg_standard_input; \
+ G.max_col = 80; \
+ G.current_col = 0; /* we are noexec, must clear */ \
+} 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, device_name);
+ bb_perror_msg_and_die(fmt, G.device_name);
}
-static ATTRIBUTE_ALWAYS_INLINE int streq(const char *a, const char *b)
+static void perror_on_device(const char *fmt)
{
- return strcmp(a, b) == 0;
+ 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;
- char buf[1024]; /* Plenty long for our needs */
- int buflen;
+ unsigned buflen;
va_start(args, message);
- vsprintf(buf, message, args);
+ buflen = vsnprintf(buf, sizeof(buf), message, args);
va_end(args);
- buflen = strlen(buf);
- if (current_col + (current_col > 0) + buflen >= max_col) {
- putchar('\n');
- current_col = 0;
- }
- if (current_col > 0) {
- putchar(' ');
- current_col++;
+ /* 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) {
+ G.current_col = 0;
+ bb_putchar('\n');
+ } else {
+ bb_putchar(' ');
+ }
+ }
}
fputs(buf, stdout);
- current_col += buflen;
+ 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},
- {NULL, 0 }
+ { "b", 512 },
+ { "k", 1024 },
+ { "B", 1024 },
+ { "", 0 }
};
static const struct mode_info *find_mode(const char *name)
{
- int i;
- for (i = 0; i < NUM_mode_info; ++i)
- if (streq(name, mode_info[i].name))
- return &mode_info[i];
- return 0;
+ 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;
- for (i = 0; i < NUM_control_info; ++i)
- if (streq(name, control_info[i].name))
- return &control_info[i];
- return 0;
+ 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_size = 4,
- param_ispeed = 5 | 0x80,
- param_ospeed = 6 | 0x80,
- param_speed = 7,
+ 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)
{
-#ifdef HAVE_C_LINE
- if (streq(name, "line")) return param_line;
-#endif
-#ifdef TIOCGWINSZ
- if (streq(name, "rows")) return param_rows;
- if (streq(name, "cols")) return param_cols;
- if (streq(name, "columns")) return param_cols;
- if (streq(name, "size")) return param_size;
-#endif
- if (streq(name, "ispeed")) return param_ispeed;
- if (streq(name, "ospeed")) return param_ospeed;
- if (streq(name, "speed")) return param_speed;
- return 0;
+ 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;
}
-
-int stty_main(int argc, char **argv)
+static int recover_mode(const char *arg, struct termios *mode)
{
- struct termios mode;
- void (*output_func)(const struct termios *);
- const char *file_name = NULL;
- int require_set_attr;
- int speed_was_set;
- int verbose_output;
- int recoverable_output;
- int noargs;
- int k;
+ int i, n;
+ unsigned chr;
+ unsigned long iflag, oflag, cflag, lflag;
- output_func = display_changed;
- noargs = 1;
- speed_was_set = 0;
- require_set_attr = 0;
- verbose_output = 0;
- recoverable_output = 0;
+ /* 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;
+ }
- /* 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;
+ /* Fail if there are too many fields */
+ if (*arg != '\0')
+ return 0;
- if (arg[0] == '-') {
- int i;
- mp = find_mode(arg+1);
- if (mp) {
- if (!(mp->flags & REV))
- bb_error_msg_and_die("invalid argument '%s'", arg);
- noargs = 0;
- continue;
- }
- /* It is an option - parse it */
- i = 0;
- while (arg[++i]) {
- switch (arg[i]) {
- case 'a':
- verbose_output = 1;
- output_func = display_all;
- break;
- case 'g':
- recoverable_output = 1;
- 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] */
- --argc;
- while (argv[p+1]) { argv[p] = argv[p+1]; ++p; }
- }
- goto end_option;
- default:
- bb_error_msg_and_die("invalid argument '%s'", arg);
- }
- }
-end_option:
- continue;
- }
+ return 1;
+}
- mp = find_mode(arg);
- if (mp) {
- noargs = 0;
- continue;
- }
+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');
+}
- cp = find_control(arg);
- if (cp) {
- if (!argnext)
- bb_error_msg_and_die(bb_msg_requires_arg, arg);
- noargs = 0;
- ++k;
- continue;
- }
+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;
- param = find_param(arg);
- if (param & param_need_arg) {
- if (!argnext)
- bb_error_msg_and_die(bb_msg_requires_arg, arg);
- ++k;
+ 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;
+ char buf10[10];
+
+ /* 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(buf10, "<undef>");
+ else
+ visible(ch, buf10, 0);
+ wrapf("%s = %s;", nth_string(control_name, i), buf10);
+ }
+#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 HAVE_C_LINE
+#ifdef __linux__
case param_line:
- bb_xparse_number(argnext, stty_suffixes);
+# ifndef TIOCGWINSZ
+ xatoul_range_sfx(argnext, 1, INT_MAX, stty_suffixes);
break;
+# endif /* else fall-through */
#endif
#ifdef TIOCGWINSZ
case param_rows:
- bb_xparse_number(argnext, stty_suffixes);
- break;
case param_cols:
- bb_xparse_number(argnext, stty_suffixes);
+ 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:
- case param_speed:
+ /* 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 (string_to_baud(arg) != (speed_t) -1) break;
+ if (tty_value_to_baud(xatou(arg)) != (speed_t) -1) break;
+ invalid_argument:
bb_error_msg_and_die("invalid argument '%s'", arg);
}
- noargs = 0;
+ stty_state &= ~STTY_noargs;
}
/* Specifying both -a and -g is an error */
- if (verbose_output && recoverable_output)
- bb_error_msg_and_die("verbose and stty-readable output styles are mutually exclusive");
+ 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 (!noargs && (verbose_output || recoverable_output))
- bb_error_msg_and_die("modes may not be set when specifying an output style");
+ 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) {
- int fd, fdflags;
- device_name = file_name;
- fd = xopen(device_name, O_RDONLY | O_NONBLOCK);
- if (fd != 0) {
- dup2(fd, 0);
- close(fd);
- }
- fdflags = fcntl(STDIN_FILENO, F_GETFL);
- if (fdflags == -1 || fcntl(STDIN_FILENO, F_SETFL, fdflags & ~O_NONBLOCK) < 0)
- perror_on_device("%s: couldn't reset non-blocking mode");
+ 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("%s");
+ perror_on_device_and_die("%s");
- if (verbose_output || recoverable_output || noargs) {
- max_col = screen_columns();
- current_col = 0;
- output_func(&mode);
+ 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;
}
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(cp, argnext, &mode);
+ set_control_char_or_die(cp, argnext, &mode);
+ stty_state |= STTY_require_set_attr;
continue;
}
}
switch (param) {
-#ifdef HAVE_C_LINE
+#ifdef __linux__
case param_line:
- mode.c_line = bb_xparse_number(argnext, stty_suffixes);
- require_set_attr = 1;
+ mode.c_line = xatoul_sfx(argnext, stty_suffixes);
+ stty_state |= STTY_require_set_attr;
break;
#endif
#ifdef TIOCGWINSZ
case param_cols:
- set_window_size(-1, (int) bb_xparse_number(argnext, stty_suffixes));
+ case param_columns:
+ set_window_size(-1, xatoul_sfx(argnext, stty_suffixes));
break;
case param_size:
- max_col = screen_columns();
- current_col = 0;
display_window_size(0);
break;
case param_rows:
- set_window_size((int) bb_xparse_number(argnext, stty_suffixes), -1);
+ set_window_size(xatoul_sfx(argnext, stty_suffixes), -1);
break;
#endif
+ case param_speed:
+ display_speed(&mode, 0);
+ break;
case param_ispeed:
- set_speed(input_speed, argnext, &mode);
- speed_was_set = 1;
- require_set_attr = 1;
+ set_speed_or_die(input_speed, argnext, &mode);
+ stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
break;
case param_ospeed:
- set_speed(output_speed, argnext, &mode);
- speed_was_set = 1;
- require_set_attr = 1;
- break;
- case param_speed:
- max_col = screen_columns();
- display_speed(&mode, 0);
+ 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)
- require_set_attr = 1;
- else /* true: if (string_to_baud(arg) != (speed_t) -1) */ {
- set_speed(both_speeds, arg, &mode);
- speed_was_set = 1;
- require_set_attr = 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 (require_set_attr) {
+ if (stty_state & STTY_require_set_attr) {
struct termios new_mode;
if (tcsetattr(STDIN_FILENO, TCSADRAIN, &mode))
- perror_on_device("%s");
+ 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
+ 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 */
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("%s");
+ perror_on_device_and_die("%s");
if (memcmp(&mode, &new_mode, sizeof(mode)) != 0) {
-#ifdef CIBAUD
+/*
+ * 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
error for a true failure to set the baud rate */
new_mode.c_cflag &= (~CIBAUD);
- if (speed_was_set || memcmp(&mode, &new_mode, sizeof(mode)) != 0)
+ if ((stty_state & STTY_speed_was_set)
+ || memcmp(&mode, &new_mode, sizeof(mode)) != 0)
#endif
- perror_on_device ("%s: unable to perform all requested operations");
+ perror_on_device_and_die("%s: cannot perform all requested operations");
}
}
return EXIT_SUCCESS;
}
-
-
-static void
-set_mode(const struct mode_info *info, int reversed, struct termios *mode)
-{
- tcflag_t *bitsp;
-
- bitsp = mode_type_flag(EMT(info->type), mode);
-
- if (bitsp == NULL) {
- /* Combination mode */
- if (info->name == evenp || info->name == parity) {
- if (reversed)
- mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
- else
- mode->c_cflag =
- (mode->c_cflag & ~PARODD & ~CSIZE) | PARENB | CS7;
- } else if (info->name == stty_oddp) {
- if (reversed)
- mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
- else
- mode->c_cflag =
- (mode->c_cflag & ~CSIZE) | CS7 | PARODD | PARENB;
- } else if (info->name == stty_nl) {
- if (reversed) {
- mode->c_iflag = (mode->c_iflag | ICRNL) & ~INLCR & ~IGNCR;
- mode->c_oflag = (mode->c_oflag
-#ifdef ONLCR
- | ONLCR
-#endif
- )
-#ifdef OCRNL
- & ~OCRNL
-#endif
-#ifdef ONLRET
- & ~ONLRET
-#endif
- ;
- } else {
- mode->c_iflag = mode->c_iflag & ~ICRNL;
-#ifdef ONLCR
- mode->c_oflag = mode->c_oflag & ~ONLCR;
-#endif
- }
- } else if (info->name == stty_ek) {
- mode->c_cc[VERASE] = CERASE;
- mode->c_cc[VKILL] = CKILL;
- } else if (info->name == stty_sane)
- sane_mode(mode);
- else if (info->name == cbreak) {
- if (reversed)
- mode->c_lflag |= ICANON;
- else
- mode->c_lflag &= ~ICANON;
- } else if (info->name == stty_pass8) {
- if (reversed) {
- mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARENB;
- mode->c_iflag |= ISTRIP;
- } else {
- mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
- mode->c_iflag &= ~ISTRIP;
- }
- } else if (info->name == litout) {
- if (reversed) {
- mode->c_cflag = (mode->c_cflag & ~CSIZE) | CS7 | PARENB;
- mode->c_iflag |= ISTRIP;
- mode->c_oflag |= OPOST;
- } else {
- mode->c_cflag = (mode->c_cflag & ~PARENB & ~CSIZE) | CS8;
- mode->c_iflag &= ~ISTRIP;
- mode->c_oflag &= ~OPOST;
- }
- } else if (info->name == raw || info->name == cooked) {
- if ((info->name[0] == 'r' && reversed)
- || (info->name[0] == 'c' && !reversed)) {
- /* Cooked mode */
- mode->c_iflag |= BRKINT | IGNPAR | ISTRIP | ICRNL | IXON;
- mode->c_oflag |= OPOST;
- mode->c_lflag |= ISIG | ICANON;
-#if VMIN == VEOF
- mode->c_cc[VEOF] = CEOF;
-#endif
-#if VTIME == VEOL
- mode->c_cc[VEOL] = CEOL;
-#endif
- } else {
- /* Raw mode */
- mode->c_iflag = 0;
- mode->c_oflag &= ~OPOST;
- mode->c_lflag &= ~(ISIG | ICANON
-#ifdef XCASE
- | XCASE
-#endif
- );
- mode->c_cc[VMIN] = 1;
- mode->c_cc[VTIME] = 0;
- }
- }
-#ifdef IXANY
- else if (info->name == decctlq) {
- if (reversed)
- mode->c_iflag |= IXANY;
- else
- mode->c_iflag &= ~IXANY;
- }
-#endif
-#ifdef TABDLY
- else if (info->name == stty_tabs) {
- if (reversed)
- mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB3;
- else
- mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB0;
- }
-#else
-# ifdef OXTABS
- else if (info->name == stty_tabs) {
- if (reversed)
- mode->c_oflag = mode->c_oflag | OXTABS;
- else
- mode->c_oflag = mode->c_oflag & ~OXTABS;
- }
-# endif
-#endif
-#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
- else if (info->name == stty_lcase || info->name == stty_LCASE) {
- if (reversed) {
- mode->c_lflag &= ~XCASE;
- mode->c_iflag &= ~IUCLC;
- mode->c_oflag &= ~OLCUC;
- } else {
- mode->c_lflag |= XCASE;
- mode->c_iflag |= IUCLC;
- mode->c_oflag |= OLCUC;
- }
- }
-#endif
- else if (info->name == stty_crt)
- mode->c_lflag |= ECHOE
-#ifdef ECHOCTL
- | ECHOCTL
-#endif
-#ifdef ECHOKE
- | ECHOKE
-#endif
- ;
- else if (info->name == stty_dec) {
- mode->c_cc[VINTR] = 3; /* ^C */
- mode->c_cc[VERASE] = 127; /* DEL */
- mode->c_cc[VKILL] = 21; /* ^U */
- mode->c_lflag |= ECHOE
-#ifdef ECHOCTL
- | ECHOCTL
-#endif
-#ifdef ECHOKE
- | ECHOKE
-#endif
- ;
-#ifdef IXANY
- mode->c_iflag &= ~IXANY;
-#endif
- }
- } else if (reversed)
- *bitsp = *bitsp & ~((unsigned long)info->mask) & ~info->bits;
- else
- *bitsp = (*bitsp & ~((unsigned long)info->mask)) | info->bits;
-}
-
-static void
-set_control_char(const struct control_info *info, const char *arg,
- struct termios *mode)
-{
- unsigned char value;
-
- if (info->name == stty_min || info->name == stty_time)
- value = bb_xparse_number(arg, stty_suffixes);
- else if (arg[0] == '\0' || arg[1] == '\0')
- value = arg[0];
- else if (streq(arg, "^-") || streq(arg, "undef"))
- value = _POSIX_VDISABLE;
- else if (arg[0] == '^' && arg[1] != '\0') { /* Ignore any trailing junk */
- if (arg[1] == '?')
- value = 127;
- else
- value = arg[1] & ~0140; /* Non-letters get weird results */
- } else
- value = bb_xparse_number(arg, stty_suffixes);
- mode->c_cc[info->offset] = value;
-}
-
-static void
-set_speed(enum speed_setting type, const char *arg, struct termios *mode)
-{
- speed_t baud;
-
- baud = string_to_baud(arg);
-
- if (type != output_speed) { /* either input or both */
- cfsetispeed(mode, baud);
- }
- if (type != input_speed) { /* either output or both */
- cfsetospeed(mode, baud);
- }
-}
-
-#ifdef TIOCGWINSZ
-
-static int get_win_size(int fd, struct winsize *win)
-{
- return ioctl(fd, TIOCGWINSZ, (char *) win);
-}
-
-static void
-set_window_size(int rows, int cols)
-{
- struct winsize win;
-
- if (get_win_size(STDIN_FILENO, &win)) {
- if (errno != EINVAL)
- perror_on_device("%s");
- memset(&win, 0, sizeof(win));
- }
-
- if (rows >= 0)
- win.ws_row = rows;
- if (cols >= 0)
- win.ws_col = cols;
-
-# ifdef TIOCSSIZE
- /* Alexander Dupuy <dupuy@cs.columbia.edu> wrote:
- The following code deals with a bug in the SunOS 4.x (and 3.x?) kernel.
- This comment from sys/ttold.h describes Sun's twisted logic - a better
- test would have been (ts_lines > 64k || ts_cols > 64k || ts_cols == 0).
- At any rate, the problem is gone in Solaris 2.x */
-
- if (win.ws_row == 0 || win.ws_col == 0) {
- struct ttysize ttysz;
-
- ttysz.ts_lines = win.ws_row;
- ttysz.ts_cols = win.ws_col;
-
- win.ws_row = win.ws_col = 1;
-
- if ((ioctl(STDIN_FILENO, TIOCSWINSZ, (char *) &win) != 0)
- || (ioctl(STDIN_FILENO, TIOCSSIZE, (char *) &ttysz) != 0)) {
- perror_on_device("%s");
- }
- return;
- }
-# endif
-
- if (ioctl(STDIN_FILENO, TIOCSWINSZ, (char *) &win))
- perror_on_device("%s");
-}
-
-static void display_window_size(int fancy)
-{
- const char *fmt_str = "%s" "\0" "%s: no size information for this device";
- struct winsize win;
-
- if (get_win_size(STDIN_FILENO, &win)) {
- if ((errno != EINVAL) || ((fmt_str += 2), !fancy)) {
- perror_on_device(fmt_str);
- }
- } else {
- wrapf(fancy ? "rows %d; columns %d;" : "%d %d\n",
- win.ws_row, win.ws_col);
- if (!fancy)
- current_col = 0;
- }
-}
-#endif
-
-static int screen_columns(void)
-{
- int columns;
- const char *s;
-
-#ifdef TIOCGWINSZ
- struct winsize win;
-
- /* With Solaris 2.[123], this ioctl fails and errno is set to
- EINVAL for telnet (but not rlogin) sessions.
- On ISC 3.0, it fails for the console and the serial port
- (but it works for ptys).
- It can also fail on any system when stdout isn't a tty.
- In case of any failure, just use the default */
- if (get_win_size(STDOUT_FILENO, &win) == 0 && win.ws_col > 0)
- return win.ws_col;
-#endif
-
- columns = 80;
- if ((s = getenv("COLUMNS"))) {
- columns = atoi(s);
- }
- return columns;
-}
-
-static tcflag_t *mode_type_flag(enum mode_type type, const struct termios *mode)
-{
- static const unsigned char tcflag_offsets[] = {
- 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 (((unsigned int) type) <= local) {
- return (tcflag_t *)(((char *) mode) + tcflag_offsets[(int)type]);
- }
- return NULL;
-}
-
-static void display_changed(const struct termios *mode)
-{
- int i;
- int empty_line;
- tcflag_t *bitsp;
- unsigned long mask;
- enum mode_type prev_type = control;
-
- display_speed(mode, 1);
-#ifdef HAVE_C_LINE
- wrapf("line = %d;", mode->c_line);
-#endif
- putchar('\n');
- current_col = 0;
-
- empty_line = 1;
- for (i = 0; control_info[i].name != stty_min; ++i) {
- if (mode->c_cc[control_info[i].offset] == control_info[i].saneval)
- continue;
- /* If swtch is the same as susp, don't print both */
-#if VSWTCH == VSUSP
- if (control_info[i].name == stty_swtch)
- continue;
-#endif
- /* If eof uses the same slot as min, only print whichever applies */
-#if VEOF == VMIN
- if ((mode->c_lflag & ICANON) == 0
- && (control_info[i].name == stty_eof
- || control_info[i].name == stty_eol)) continue;
-#endif
-
- empty_line = 0;
- wrapf("%s = %s;", control_info[i].name,
- visible(mode->c_cc[control_info[i].offset]));
- }
- if ((mode->c_lflag & ICANON) == 0) {
- wrapf("min = %d; time = %d;\n", (int) mode->c_cc[VMIN],
- (int) mode->c_cc[VTIME]);
- } else if (empty_line == 0)
- putchar('\n');
- current_col = 0;
-
- empty_line = 1;
- for (i = 0; i < NUM_mode_info; ++i) {
- if (mode_info[i].flags & OMIT)
- continue;
- if (EMT(mode_info[i].type) != prev_type) {
- if (empty_line == 0) {
- putchar('\n');
- current_col = 0;
- empty_line = 1;
- }
- prev_type = EMT(mode_info[i].type);
- }
-
- bitsp = mode_type_flag(EMT(mode_info[i].type), mode);
- mask = mode_info[i].mask ? mode_info[i].mask : mode_info[i].bits;
- if ((*bitsp & mask) == mode_info[i].bits) {
- if (mode_info[i].flags & SANE_UNSET) {
- wrapf("%s", mode_info[i].name);
- empty_line = 0;
- }
- } else if ((mode_info[i].flags & (SANE_SET | REV)) == (SANE_SET | REV)) {
- wrapf("-%s", mode_info[i].name);
- empty_line = 0;
- }
- }
- if (empty_line == 0)
- putchar('\n');
- current_col = 0;
-}
-
-static void
-display_all(const struct termios *mode)
-{
- int i;
- tcflag_t *bitsp;
- unsigned long mask;
- enum mode_type prev_type = control;
-
- display_speed(mode, 1);
-#ifdef TIOCGWINSZ
- display_window_size(1);
-#endif
-#ifdef HAVE_C_LINE
- wrapf("line = %d;", mode->c_line);
-#endif
- putchar('\n');
- current_col = 0;
-
- for (i = 0; control_info[i].name != stty_min; ++i) {
- /* If swtch is the same as susp, don't print both */
-#if VSWTCH == VSUSP
- if (control_info[i].name == stty_swtch)
- continue;
-#endif
- /* If eof uses the same slot as min, only print whichever applies */
-#if VEOF == VMIN
- if ((mode->c_lflag & ICANON) == 0
- && (control_info[i].name == stty_eof
- || control_info[i].name == stty_eol)) continue;
-#endif
- wrapf("%s = %s;", control_info[i].name,
- visible(mode->c_cc[control_info[i].offset]));
- }
-#if VEOF == VMIN
- if ((mode->c_lflag & ICANON) == 0)
-#endif
- wrapf("min = %d; time = %d;", mode->c_cc[VMIN], mode->c_cc[VTIME]);
- if (current_col != 0)
- putchar('\n');
- current_col = 0;
-
- for (i = 0; i < NUM_mode_info; ++i) {
- if (mode_info[i].flags & OMIT)
- continue;
- if (EMT(mode_info[i].type) != prev_type) {
- putchar('\n');
- current_col = 0;
- prev_type = EMT(mode_info[i].type);
- }
-
- bitsp = mode_type_flag(EMT(mode_info[i].type), mode);
- mask = mode_info[i].mask ? mode_info[i].mask : mode_info[i].bits;
- if ((*bitsp & mask) == mode_info[i].bits)
- wrapf("%s", mode_info[i].name);
- else if (mode_info[i].flags & REV)
- wrapf("-%s", mode_info[i].name);
- }
- putchar('\n');
- current_col = 0;
-}
-
-static void display_speed(const struct termios *mode, int fancy)
-{
- unsigned long ispeed, ospeed;
- const char *fmt_str =
- "%lu %lu\n\0" "ispeed %lu baud; ospeed %lu baud;\0"
- "%lu\n\0" "\0\0\0\0" "speed %lu baud;";
-
- ospeed = ispeed = cfgetispeed(mode);
- if (ispeed == 0 || ispeed == (ospeed = cfgetospeed(mode))) {
- ispeed = ospeed; /* in case ispeed was 0 */
- fmt_str += 43;
- }
- if (fancy) {
- fmt_str += 9;
- }
- wrapf(fmt_str, tty_baud_to_value(ispeed), tty_baud_to_value(ospeed));
- if (!fancy)
- current_col = 0;
-}
-
-static void display_recoverable(const struct termios *mode)
-{
- int i;
-
- printf("%lx:%lx:%lx:%lx",
- (unsigned long) mode->c_iflag, (unsigned long) mode->c_oflag,
- (unsigned long) mode->c_cflag, (unsigned long) mode->c_lflag);
- for (i = 0; i < NCCS; ++i)
- printf(":%x", (unsigned int) mode->c_cc[i]);
- putchar('\n');
-}
-
-static int recover_mode(const char *arg, struct termios *mode)
-{
- int i, n;
- unsigned int chr;
- unsigned long iflag, oflag, cflag, lflag;
-
- /* Scan into temporaries since it is too much trouble to figure out
- the right format for `tcflag_t' */
- if (sscanf(arg, "%lx:%lx:%lx:%lx%n",
- &iflag, &oflag, &cflag, &lflag, &n) != 4)
- return 0;
- mode->c_iflag = iflag;
- mode->c_oflag = oflag;
- mode->c_cflag = cflag;
- mode->c_lflag = lflag;
- arg += n;
- for (i = 0; i < NCCS; ++i) {
- if (sscanf(arg, ":%x%n", &chr, &n) != 1)
- return 0;
- mode->c_cc[i] = chr;
- arg += n;
- }
-
- /* Fail if there are too many fields */
- if (*arg != '\0')
- return 0;
-
- return 1;
-}
-
-static speed_t string_to_baud(const char *arg)
-{
- return tty_value_to_baud(bb_xparse_number(arg, 0));
-}
-
-static void sane_mode(struct termios *mode)
-{
- int i;
- tcflag_t *bitsp;
-
- for (i = 0; i < NUM_control_info; ++i) {
-#if VMIN == VEOF
- if (control_info[i].name == stty_min)
- break;
-#endif
- mode->c_cc[control_info[i].offset] = control_info[i].saneval;
- }
-
- for (i = 0; i < NUM_mode_info; ++i) {
- if (mode_info[i].flags & SANE_SET) {
- bitsp = mode_type_flag(EMT(mode_info[i].type), mode);
- *bitsp = (*bitsp & ~((unsigned long)mode_info[i].mask))
- | mode_info[i].bits;
- } else if (mode_info[i].flags & SANE_UNSET) {
- bitsp = mode_type_flag(EMT(mode_info[i].type), mode);
- *bitsp = *bitsp & ~((unsigned long)mode_info[i].mask)
- & ~mode_info[i].bits;
- }
- }
-}
-
-/* Return a string that is the printable representation of character CH */
-/* Adapted from `cat' by Torbjorn Granlund */
-
-static const char *visible(unsigned int ch)
-{
- static char buf[10];
- char *bpout = buf;
-
- if (ch == _POSIX_VDISABLE) {
- return "<undef>";
- }
-
- if (ch >= 128) {
- ch -= 128;
- *bpout++ = 'M';
- *bpout++ = '-';
- }
-
- if (ch < 32) {
- *bpout++ = '^';
- *bpout++ = ch + 64;
- } else if (ch < 127) {
- *bpout++ = ch;
- } else {
- *bpout++ = '^';
- *bpout++ = '?';
- }
-
- *bpout = '\0';
- return buf;
-}
projects / oweals / busybox.git / blobdiff