/* 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"
-
-#define STREQ(a, b) (strcmp ((a), (b)) == 0)
-
+ *
+ * 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 (8.9 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)
#endif
#define Control(c) ((c) & 0x1f)
-/* Canonical values for control characters. */
+/* Canonical values for control characters */
#ifndef CINTR
-# define CINTR Control ('c')
+# define CINTR Control('c')
#endif
#ifndef CQUIT
# define CQUIT 28
# define CERASE 127
#endif
#ifndef CKILL
-# define CKILL Control ('u')
+# define CKILL Control('u')
#endif
#ifndef CEOF
-# define CEOF Control ('d')
+# define CEOF Control('d')
#endif
#ifndef CEOL
# define CEOL _POSIX_VDISABLE
#endif
#ifndef CSTART
-# define CSTART Control ('q')
+# define CSTART Control('q')
#endif
#ifndef CSTOP
-# define CSTOP Control ('s')
+# define CSTOP Control('s')
#endif
#ifndef CSUSP
-# define CSUSP Control ('z')
+# define CSUSP Control('z')
#endif
#if defined(VEOL2) && !defined(CEOL2)
# define CEOL2 _POSIX_VDISABLE
#endif
-/* ISC renamed swtch to susp for termios, but we'll accept either name. */
+/* 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
# 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)
-# define CDSUSP Control ('y')
+#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')
+# define CRPRNT Control('r')
#endif
#if defined(VWERASE) && !defined(CWERASE)
-# define CWERASE Control ('w')
+# define CWERASE Control('w')
#endif
#if defined(VLNEXT) && !defined(CLNEXT)
-# define CLNEXT Control ('v')
+# define CLNEXT Control('v')
#endif
#if defined(VDISCARD) && !defined(VFLUSHO)
# define VFLUSHO VDISCARD
# define ECHOKE CRTKIL
#endif
#if defined(VFLUSHO) && !defined(CFLUSHO)
-# define CFLUSHO Control ('o')
+# define CFLUSHO Control('o')
#endif
#if defined(VSTATUS) && !defined(CSTATUS)
-# define CSTATUS Control ('t')
+# 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. */
+/* 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;
+}
+
+/* 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 */
-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 `-'. */
-#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 */
};
-#define MI_ENTRY(N,T,F,B,M) { N, T, F, M, B }
+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
+};
-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),
+#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
-# 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 ),
-};
-
-enum {
- NUM_mode_info =
- (sizeof(mode_info) / sizeof(struct mode_info))
-};
+#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
+ ;
-/* Control character settings. */
-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. */
-};
+#undef MI_ENTRY
+#define MI_ENTRY(N,T,F,B,M) { T, F, M, B },
-/* Control characters. */
+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 )
+#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
-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},
+#if BSDLY
+ MI_ENTRY("bs1", output, SANE_UNSET, BS1, BSDLY)
+ MI_ENTRY("bs0", output, SANE_SET, BS0, BSDLY)
#endif
-#ifdef VSWTCH
- {stty_swtch, CSWTCH, VSWTCH},
+#if VTDLY
+ MI_ENTRY("vt1", output, SANE_UNSET, VT1, VTDLY)
+ MI_ENTRY("vt0", output, SANE_SET, VT0, VTDLY)
#endif
- {"start", CSTART, VSTART},
- {"stop", CSTOP, VSTOP},
- {"susp", CSUSP, VSUSP},
-#ifdef VDSUSP
- {"dsusp", CDSUSP, VDSUSP},
+#if FFDLY
+ MI_ENTRY("ff1", output, SANE_UNSET, FF1, FFDLY)
+ MI_ENTRY("ff0", output, SANE_SET, FF0, FFDLY)
#endif
-#ifdef VREPRINT
- {"rprnt", CRPRNT, VREPRINT},
+ 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
-#ifdef VWERASE
- {"werase", CWERASE, VWERASE},
+ 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
-#ifdef VLNEXT
- {"lnext", CLNEXT, VLNEXT},
+#if TOSTOP
+ MI_ENTRY("tostop", local, SANE_UNSET | REV, TOSTOP, 0 )
#endif
-#ifdef VFLUSHO
- {"flush", CFLUSHO, VFLUSHO},
+#if ECHOPRT
+ MI_ENTRY("echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 )
+ MI_ENTRY("prterase", local, OMIT | REV, ECHOPRT, 0 )
#endif
-#ifdef VSTATUS
- {"status", CSTATUS, VSTATUS},
+#if ECHOCTL
+ MI_ENTRY("echoctl", local, SANE_SET | REV, ECHOCTL, 0 )
+ MI_ENTRY("ctlecho", local, OMIT | REV, ECHOCTL, 0 )
#endif
- /* These must be last because of the display routines. */
- {stty_min, 1, VMIN},
- {stty_time, 0, VTIME},
+#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 = ARRAY_SIZE(mode_info)
+};
+
+
+/* Control characters */
+struct control_info {
+ const uint8_t saneval; /* Value to set for 'stty sane' */
+ const uint8_t offset; /* Offset in c_cc */
+};
+
+enum {
+ /* Must match control_name[] and control_info[] order! */
+ CIDX_intr = 0,
+ CIDX_quit,
+ CIDX_erase,
+ CIDX_kill,
+ CIDX_eof,
+ CIDX_eol,
+#if VEOL2
+ CIDX_eol2,
+#endif
+#if VSWTCH
+ CIDX_swtch,
+#endif
+ CIDX_start,
+ CIDX_stop,
+ CIDX_susp,
+#if VDSUSP
+ CIDX_dsusp,
+#endif
+#if VREPRINT
+ CIDX_rprnt,
+#endif
+#if VWERASE
+ CIDX_werase,
+#endif
+#if VLNEXT
+ CIDX_lnext,
+#endif
+#if VFLUSHO
+ CIDX_flush,
+#endif
+#if VSTATUS
+ CIDX_status,
+#endif
+ CIDX_min,
+ CIDX_time,
+};
+
+#define CI_ENTRY(n,s,o) n "\0"
+
+/* Name given on command line */
+static const char control_name[] ALIGN1 =
+ CI_ENTRY("intr", CINTR, VINTR )
+ CI_ENTRY("quit", CQUIT, VQUIT )
+ CI_ENTRY("erase", CERASE, VERASE )
+ CI_ENTRY("kill", CKILL, VKILL )
+ CI_ENTRY("eof", CEOF, VEOF )
+ CI_ENTRY("eol", CEOL, VEOL )
+#if VEOL2
+ CI_ENTRY("eol2", CEOL2, VEOL2 )
+#endif
+#if VSWTCH
+ CI_ENTRY("swtch", CSWTCH, VSWTCH )
+#endif
+ CI_ENTRY("start", CSTART, VSTART )
+ CI_ENTRY("stop", CSTOP, VSTOP )
+ CI_ENTRY("susp", CSUSP, VSUSP )
+#if VDSUSP
+ CI_ENTRY("dsusp", CDSUSP, VDSUSP )
+#endif
+#if VREPRINT
+ CI_ENTRY("rprnt", CRPRNT, VREPRINT)
+#endif
+#if VWERASE
+ CI_ENTRY("werase", CWERASE, VWERASE )
+#endif
+#if VLNEXT
+ CI_ENTRY("lnext", CLNEXT, VLNEXT )
+#endif
+#if VFLUSHO
+ CI_ENTRY("flush", CFLUSHO, VFLUSHO )
+#endif
+#if VSTATUS
+ CI_ENTRY("status", CSTATUS, VSTATUS )
+#endif
+ /* These must be last because of the display routines */
+ CI_ENTRY("min", 1, VMIN )
+ CI_ENTRY("time", 0, VTIME )
+ ;
+
+#undef CI_ENTRY
+#define CI_ENTRY(n,s,o) { s, o },
+
+static const struct control_info control_info[] ALIGN2 = {
+ /* This should be verbatim cut-n-paste copy of the above CI_ENTRYs */
+ CI_ENTRY("intr", CINTR, VINTR )
+ CI_ENTRY("quit", CQUIT, VQUIT )
+ CI_ENTRY("erase", CERASE, VERASE )
+ CI_ENTRY("kill", CKILL, VKILL )
+ CI_ENTRY("eof", CEOF, VEOF )
+ CI_ENTRY("eol", CEOL, VEOL )
+#if VEOL2
+ CI_ENTRY("eol2", CEOL2, VEOL2 )
+#endif
+#if VSWTCH
+ CI_ENTRY("swtch", CSWTCH, VSWTCH )
+#endif
+ CI_ENTRY("start", CSTART, VSTART )
+ CI_ENTRY("stop", CSTOP, VSTOP )
+ CI_ENTRY("susp", CSUSP, VSUSP )
+#if VDSUSP
+ CI_ENTRY("dsusp", CDSUSP, VDSUSP )
+#endif
+#if VREPRINT
+ CI_ENTRY("rprnt", CRPRNT, VREPRINT)
+#endif
+#if VWERASE
+ CI_ENTRY("werase", CWERASE, VWERASE )
+#endif
+#if VLNEXT
+ CI_ENTRY("lnext", CLNEXT, VLNEXT )
+#endif
+#if VFLUSHO
+ CI_ENTRY("flush", CFLUSHO, VFLUSHO )
+#endif
+#if VSTATUS
+ CI_ENTRY("status", CSTATUS, VSTATUS )
+#endif
+ /* These must be last because of the display routines */
+ CI_ENTRY("min", 1, VMIN )
+ CI_ENTRY("time", 0, VTIME )
};
enum {
- NUM_control_info =
- (sizeof(control_info) / sizeof(struct control_info))
+ NUM_control_info = ARRAY_SIZE(control_info)
};
-#define EMT(t) ((enum mode_type)(t))
-
-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, struct termios *mode);
-static void display_all(struct termios *mode);
-static void display_changed(struct termios *mode);
-static void display_recoverable(struct termios *mode);
-static void display_speed(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)
{
- bb_perror_msg_and_die(fmt, device_name);
-}
+ 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);
+ }
+}
-/* The width of the screen, for output wrapping. */
-static int max_col;
+static NORETURN void perror_on_device_and_die(const char *fmt)
+{
+ bb_perror_msg_and_die(fmt, G.device_name);
+}
-/* Current position, to know when to wrap. */
-static int current_col;
+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. */
-
+ 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)(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));
+}
- switch (param) {
-#ifdef HAVE_C_LINE
+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 __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. */
+ 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. */
+ 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. */
+ 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
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. */
+ 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;
}
-
-/* Return 0 if not applied because not reversible; otherwise return 1. */
-
-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)
-{
- int err = ioctl(fd, TIOCGWINSZ, (char *) win);
-
- return err;
-}
-
-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, 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(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(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(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(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