aboutsummaryrefslogtreecommitdiff
path: root/coreutils/stty.c
diff options
context:
space:
mode:
Diffstat (limited to 'coreutils/stty.c')
-rw-r--r--coreutils/stty.c1439
1 files changed, 1439 insertions, 0 deletions
diff --git a/coreutils/stty.c b/coreutils/stty.c
new file mode 100644
index 0000000..3605e3c
--- /dev/null
+++ b/coreutils/stty.c
@@ -0,0 +1,1439 @@
+/* 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.
+*/
+/* 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 "libbb.h"
+
+#ifndef _POSIX_VDISABLE
+# define _POSIX_VDISABLE ((unsigned char) 0)
+#endif
+
+#define Control(c) ((c) & 0x1f)
+/* Canonical values for control characters */
+#ifndef CINTR
+# define CINTR Control('c')
+#endif
+#ifndef CQUIT
+# define CQUIT 28
+#endif
+#ifndef CERASE
+# define CERASE 127
+#endif
+#ifndef CKILL
+# define CKILL Control('u')
+#endif
+#ifndef CEOF
+# define CEOF Control('d')
+#endif
+#ifndef CEOL
+# define CEOL _POSIX_VDISABLE
+#endif
+#ifndef CSTART
+# define CSTART Control('q')
+#endif
+#ifndef CSTOP
+# define CSTOP Control('s')
+#endif
+#ifndef CSUSP
+# define CSUSP Control('z')
+#endif
+#if defined(VEOL2) && !defined(CEOL2)
+# define CEOL2 _POSIX_VDISABLE
+#endif
+/* ISC renamed swtch to susp for termios, but we'll accept either name */
+#if defined(VSUSP) && !defined(VSWTCH)
+# define VSWTCH VSUSP
+# define CSWTCH CSUSP
+#endif
+#if defined(VSWTCH) && !defined(CSWTCH)
+# define CSWTCH _POSIX_VDISABLE
+#endif
+
+/* SunOS 5.3 loses (^Z doesn't work) if 'swtch' is the same as 'susp'.
+ So the default is to disable 'swtch.' */
+#if defined(__sparc__) && defined(__svr4__)
+# undef CSWTCH
+# define CSWTCH _POSIX_VDISABLE
+#endif
+
+#if defined(VWERSE) && !defined(VWERASE) /* AIX-3.2.5 */
+# define VWERASE VWERSE
+#endif
+#if defined(VDSUSP) && !defined(CDSUSP)
+# define CDSUSP Control('y')
+#endif
+#if !defined(VREPRINT) && defined(VRPRNT) /* Irix 4.0.5 */
+# define VREPRINT VRPRNT
+#endif
+#if defined(VREPRINT) && !defined(CRPRNT)
+# define CRPRNT Control('r')
+#endif
+#if defined(VWERASE) && !defined(CWERASE)
+# define CWERASE Control('w')
+#endif
+#if defined(VLNEXT) && !defined(CLNEXT)
+# define CLNEXT Control('v')
+#endif
+#if defined(VDISCARD) && !defined(VFLUSHO)
+# define VFLUSHO VDISCARD
+#endif
+#if defined(VFLUSH) && !defined(VFLUSHO) /* Ultrix 4.2 */
+# define VFLUSHO VFLUSH
+#endif
+#if defined(CTLECH) && !defined(ECHOCTL) /* Ultrix 4.3 */
+# define ECHOCTL CTLECH
+#endif
+#if defined(TCTLECH) && !defined(ECHOCTL) /* Ultrix 4.2 */
+# define ECHOCTL TCTLECH
+#endif
+#if defined(CRTKIL) && !defined(ECHOKE) /* Ultrix 4.2 and 4.3 */
+# define ECHOKE CRTKIL
+#endif
+#if defined(VFLUSHO) && !defined(CFLUSHO)
+# define CFLUSHO Control('o')
+#endif
+#if defined(VSTATUS) && !defined(CSTATUS)
+# define CSTATUS Control('t')
+#endif
+
+/* Which speeds to set */
+enum speed_setting {
+ input_speed, output_speed, both_speeds
+};
+
+/* Which member(s) of 'struct termios' a mode uses */
+enum {
+ /* Do NOT change the order or values, as mode_type_flag()
+ * depends on them */
+ control, input, output, local, combination
+};
+
+/* Flags for 'struct mode_info' */
+#define SANE_SET 1 /* Set in 'sane' mode */
+#define SANE_UNSET 2 /* Unset in 'sane' mode */
+#define REV 4 /* Can be turned off by prepending '-' */
+#define OMIT 8 /* Don't display value */
+
+
+/* Each mode.
+ * This structure should be kept as small as humanly possible.
+ */
+struct mode_info {
+ const uint8_t type; /* Which structure element to change */
+ const uint8_t flags; /* Setting and display options */
+ /* only these values are ever used, so... */
+#if (CSIZE | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY) < 0x100
+ const uint8_t mask;
+#elif (CSIZE | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY) < 0x10000
+ const uint16_t mask;
+#else
+ const tcflag_t mask; /* Other bits to turn off for this mode */
+#endif
+ /* was using short here, but ppc32 was unhappy */
+ const tcflag_t bits; /* Bits to set for this mode */
+};
+
+enum {
+ /* Must match mode_name[] and mode_info[] order! */
+ IDX_evenp = 0,
+ IDX_parity,
+ IDX_oddp,
+ IDX_nl,
+ IDX_ek,
+ IDX_sane,
+ IDX_cooked,
+ IDX_raw,
+ IDX_pass8,
+ IDX_litout,
+ IDX_cbreak,
+ IDX_crt,
+ IDX_dec,
+#ifdef IXANY
+ IDX_decctlq,
+#endif
+#if defined(TABDLY) || defined(OXTABS)
+ IDX_tabs,
+#endif
+#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
+ IDX_lcase,
+ IDX_LCASE,
+#endif
+};
+
+#define MI_ENTRY(N,T,F,B,M) N "\0"
+
+/* Mode names given on command line */
+static const char mode_name[] =
+ MI_ENTRY("evenp", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("parity", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("oddp", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("nl", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("ek", combination, OMIT, 0, 0 )
+ MI_ENTRY("sane", combination, OMIT, 0, 0 )
+ MI_ENTRY("cooked", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("raw", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("pass8", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("litout", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("cbreak", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("crt", combination, OMIT, 0, 0 )
+ MI_ENTRY("dec", combination, OMIT, 0, 0 )
+#ifdef IXANY
+ MI_ENTRY("decctlq", combination, REV | OMIT, 0, 0 )
+#endif
+#if defined(TABDLY) || defined(OXTABS)
+ MI_ENTRY("tabs", combination, REV | OMIT, 0, 0 )
+#endif
+#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
+ MI_ENTRY("lcase", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("LCASE", combination, REV | OMIT, 0, 0 )
+#endif
+ MI_ENTRY("parenb", control, REV, PARENB, 0 )
+ MI_ENTRY("parodd", control, REV, PARODD, 0 )
+ MI_ENTRY("cs5", control, 0, CS5, CSIZE)
+ MI_ENTRY("cs6", control, 0, CS6, CSIZE)
+ MI_ENTRY("cs7", control, 0, CS7, CSIZE)
+ MI_ENTRY("cs8", control, 0, CS8, CSIZE)
+ MI_ENTRY("hupcl", control, REV, HUPCL, 0 )
+ MI_ENTRY("hup", control, REV | OMIT, HUPCL, 0 )
+ MI_ENTRY("cstopb", control, REV, CSTOPB, 0 )
+ MI_ENTRY("cread", control, SANE_SET | REV, CREAD, 0 )
+ MI_ENTRY("clocal", control, REV, CLOCAL, 0 )
+#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)
+#else
+# ifdef 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
+ ;
+
+#undef MI_ENTRY
+#define MI_ENTRY(N,T,F,B,M) { T, F, M, B },
+
+static const struct mode_info mode_info[] = {
+ /* This should be verbatim cut-n-paste copy of the above MI_ENTRYs */
+ MI_ENTRY("evenp", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("parity", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("oddp", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("nl", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("ek", combination, OMIT, 0, 0 )
+ MI_ENTRY("sane", combination, OMIT, 0, 0 )
+ MI_ENTRY("cooked", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("raw", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("pass8", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("litout", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("cbreak", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("crt", combination, OMIT, 0, 0 )
+ MI_ENTRY("dec", combination, OMIT, 0, 0 )
+#ifdef IXANY
+ MI_ENTRY("decctlq", combination, REV | OMIT, 0, 0 )
+#endif
+#if defined(TABDLY) || defined(OXTABS)
+ MI_ENTRY("tabs", combination, REV | OMIT, 0, 0 )
+#endif
+#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
+ MI_ENTRY("lcase", combination, REV | OMIT, 0, 0 )
+ MI_ENTRY("LCASE", combination, REV | OMIT, 0, 0 )
+#endif
+ MI_ENTRY("parenb", control, REV, PARENB, 0 )
+ MI_ENTRY("parodd", control, REV, PARODD, 0 )
+ MI_ENTRY("cs5", control, 0, CS5, CSIZE)
+ MI_ENTRY("cs6", control, 0, CS6, CSIZE)
+ MI_ENTRY("cs7", control, 0, CS7, CSIZE)
+ MI_ENTRY("cs8", control, 0, CS8, CSIZE)
+ MI_ENTRY("hupcl", control, REV, HUPCL, 0 )
+ MI_ENTRY("hup", control, REV | OMIT, HUPCL, 0 )
+ MI_ENTRY("cstopb", control, REV, CSTOPB, 0 )
+ MI_ENTRY("cread", control, SANE_SET | REV, CREAD, 0 )
+ MI_ENTRY("clocal", control, REV, CLOCAL, 0 )
+#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)
+#else
+# ifdef 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
+};
+
+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,
+#ifdef VEOL2
+ CIDX_eol2,
+#endif
+#ifdef VSWTCH
+ CIDX_swtch,
+#endif
+ CIDX_start,
+ CIDX_stop,
+ CIDX_susp,
+#ifdef VDSUSP
+ CIDX_dsusp,
+#endif
+#ifdef VREPRINT
+ CIDX_rprnt,
+#endif
+#ifdef VWERASE
+ CIDX_werase,
+#endif
+#ifdef VLNEXT
+ CIDX_lnext,
+#endif
+#ifdef VFLUSHO
+ CIDX_flush,
+#endif
+#ifdef VSTATUS
+ CIDX_status,
+#endif
+ CIDX_min,
+ CIDX_time,
+};
+
+#define CI_ENTRY(n,s,o) n "\0"
+
+/* Name given on command line */
+static const char control_name[] =
+ CI_ENTRY("intr", CINTR, VINTR )
+ CI_ENTRY("quit", CQUIT, VQUIT )
+ CI_ENTRY("erase", CERASE, VERASE )
+ CI_ENTRY("kill", CKILL, VKILL )
+ CI_ENTRY("eof", CEOF, VEOF )
+ CI_ENTRY("eol", CEOL, VEOL )
+#ifdef VEOL2
+ CI_ENTRY("eol2", CEOL2, VEOL2 )
+#endif
+#ifdef VSWTCH
+ CI_ENTRY("swtch", CSWTCH, VSWTCH )
+#endif
+ CI_ENTRY("start", CSTART, VSTART )
+ CI_ENTRY("stop", CSTOP, VSTOP )
+ CI_ENTRY("susp", CSUSP, VSUSP )
+#ifdef VDSUSP
+ CI_ENTRY("dsusp", CDSUSP, VDSUSP )
+#endif
+#ifdef VREPRINT
+ CI_ENTRY("rprnt", CRPRNT, VREPRINT)
+#endif
+#ifdef VWERASE
+ CI_ENTRY("werase", CWERASE, VWERASE )
+#endif
+#ifdef VLNEXT
+ CI_ENTRY("lnext", CLNEXT, VLNEXT )
+#endif
+#ifdef VFLUSHO
+ CI_ENTRY("flush", CFLUSHO, VFLUSHO )
+#endif
+#ifdef VSTATUS
+ CI_ENTRY("status", CSTATUS, VSTATUS )
+#endif
+ /* These must be last because of the display routines */
+ CI_ENTRY("min", 1, VMIN )
+ CI_ENTRY("time", 0, VTIME )
+ ;
+
+#undef CI_ENTRY
+#define CI_ENTRY(n,s,o) { s, o },
+
+static const struct control_info control_info[] = {
+ /* This should be verbatim cut-n-paste copy of the above CI_ENTRYs */
+ CI_ENTRY("intr", CINTR, VINTR )
+ CI_ENTRY("quit", CQUIT, VQUIT )
+ CI_ENTRY("erase", CERASE, VERASE )
+ CI_ENTRY("kill", CKILL, VKILL )
+ CI_ENTRY("eof", CEOF, VEOF )
+ CI_ENTRY("eol", CEOL, VEOL )
+#ifdef VEOL2
+ CI_ENTRY("eol2", CEOL2, VEOL2 )
+#endif
+#ifdef VSWTCH
+ CI_ENTRY("swtch", CSWTCH, VSWTCH )
+#endif
+ CI_ENTRY("start", CSTART, VSTART )
+ CI_ENTRY("stop", CSTOP, VSTOP )
+ CI_ENTRY("susp", CSUSP, VSUSP )
+#ifdef VDSUSP
+ CI_ENTRY("dsusp", CDSUSP, VDSUSP )
+#endif
+#ifdef VREPRINT
+ CI_ENTRY("rprnt", CRPRNT, VREPRINT)
+#endif
+#ifdef VWERASE
+ CI_ENTRY("werase", CWERASE, VWERASE )
+#endif
+#ifdef VLNEXT
+ CI_ENTRY("lnext", CLNEXT, VLNEXT )
+#endif
+#ifdef VFLUSHO
+ CI_ENTRY("flush", CFLUSHO, VFLUSHO )
+#endif
+#ifdef VSTATUS
+ CI_ENTRY("status", CSTATUS, VSTATUS )
+#endif
+ /* These must be last because of the display routines */
+ CI_ENTRY("min", 1, VMIN )
+ CI_ENTRY("time", 0, VTIME )
+};
+
+enum {
+ NUM_control_info = ARRAY_SIZE(control_info)
+};
+
+
+struct globals {
+ const char *device_name; // = bb_msg_standard_input;
+ /* The width of the screen, for output wrapping */
+ unsigned max_col; // = 80;
+ /* Current position, to know when to wrap */
+ unsigned current_col;
+ char buf[10];
+};
+#define G (*(struct globals*)&bb_common_bufsiz1)
+#define INIT_G() do { \
+ G.device_name = bb_msg_standard_input; \
+ G.max_col = 80; \
+} while (0)
+
+
+/* Return a string that is the printable representation of character CH */
+/* Adapted from 'cat' by Torbjorn Granlund */
+static const char *visible(unsigned ch)
+{
+ char *bpout = G.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 G.buf;
+}
+
+static tcflag_t *mode_type_flag(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 void set_speed_or_die(enum speed_setting type, const char *const arg,
+ struct termios * const mode)
+{
+ speed_t baud;
+
+ baud = tty_value_to_baud(xatou(arg));
+
+ if (type != output_speed) { /* either input or both */
+ cfsetispeed(mode, baud);
+ }
+ if (type != input_speed) { /* either output or both */
+ cfsetospeed(mode, baud);
+ }
+}
+
+static NORETURN void perror_on_device_and_die(const char *fmt)
+{
+ bb_perror_msg_and_die(fmt, G.device_name);
+}
+
+static void perror_on_device(const char *fmt)
+{
+ bb_perror_msg(fmt, G.device_name);
+}
+
+/* Print format string MESSAGE and optional args.
+ Wrap to next line first if it won't fit.
+ Print a space first unless MESSAGE will start a new line */
+static void wrapf(const char *message, ...)
+{
+ char buf[128];
+ va_list args;
+ unsigned buflen;
+
+ va_start(args, message);
+ buflen = vsnprintf(buf, sizeof(buf), message, args);
+ va_end(args);
+ /* We seem to be called only with suitable lengths, but check if
+ somebody failed to adhere to this assumption just to be sure. */
+ if (!buflen || buflen >= sizeof(buf)) return;
+
+ if (G.current_col > 0) {
+ G.current_col++;
+ if (buf[0] != '\n') {
+ if (G.current_col + buflen >= G.max_col) {
+ bb_putchar('\n');
+ G.current_col = 0;
+ } else
+ bb_putchar(' ');
+ }
+ }
+ fputs(buf, stdout);
+ G.current_col += buflen;
+ if (buf[buflen-1] == '\n')
+ G.current_col = 0;
+}
+
+static void set_window_size(const int rows, const 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");
+}
+
+static void display_window_size(const 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 %d; columns %d;" : "%d %d\n",
+ height, width);
+ }
+}
+
+static const struct suffix_mult stty_suffixes[] = {
+ { "b", 512 },
+ { "k", 1024 },
+ { "B", 1024 },
+ { }
+};
+
+static const struct mode_info *find_mode(const char *name)
+{
+ int i = index_in_strings(mode_name, name);
+ return i >= 0 ? &mode_info[i] : NULL;
+}
+
+static const struct control_info *find_control(const char *name)
+{
+ int i = index_in_strings(control_name, name);
+ return i >= 0 ? &control_info[i] : NULL;
+}
+
+enum {
+ param_need_arg = 0x80,
+ param_line = 1 | 0x80,
+ param_rows = 2 | 0x80,
+ param_cols = 3 | 0x80,
+ param_columns = 4 | 0x80,
+ param_size = 5,
+ param_speed = 6,
+ param_ispeed = 7 | 0x80,
+ param_ospeed = 8 | 0x80,
+};
+
+static int find_param(const char *const name)
+{
+ static const char params[] ALIGN1 =
+ "line\0" /* 1 */
+ "rows\0" /* 2 */
+ "cols\0" /* 3 */
+ "columns\0" /* 4 */
+ "size\0" /* 5 */
+ "speed\0" /* 6 */
+ "ispeed\0"
+ "ospeed\0";
+ int i = index_in_strings(params, name) + 1;
+ if (i == 0)
+ return 0;
+ if (i != 5 && i != 6)
+ i |= 0x80;
+ return i;
+}
+
+static int recover_mode(const char *arg, struct termios *mode)
+{
+ int i, n;
+ unsigned chr;
+ unsigned long iflag, oflag, cflag, lflag;
+
+ /* Scan into temporaries since it is too much trouble to figure out
+ the right format for 'tcflag_t' */
+ if (sscanf(arg, "%lx:%lx:%lx:%lx%n",
+ &iflag, &oflag, &cflag, &lflag, &n) != 4)
+ return 0;
+ mode->c_iflag = iflag;
+ mode->c_oflag = oflag;
+ mode->c_cflag = cflag;
+ mode->c_lflag = lflag;
+ arg += n;
+ for (i = 0; i < NCCS; ++i) {
+ if (sscanf(arg, ":%x%n", &chr, &n) != 1)
+ return 0;
+ mode->c_cc[i] = chr;
+ arg += n;
+ }
+
+ /* Fail if there are too many fields */
+ if (*arg != '\0')
+ return 0;
+
+ return 1;
+}
+
+static void display_recoverable(const struct termios *mode,
+ int UNUSED_PARAM dummy)
+{
+ int i;
+ printf("%lx:%lx:%lx:%lx",
+ (unsigned long) mode->c_iflag, (unsigned long) mode->c_oflag,
+ (unsigned long) mode->c_cflag, (unsigned long) mode->c_lflag);
+ for (i = 0; i < NCCS; ++i)
+ printf(":%x", (unsigned int) mode->c_cc[i]);
+ bb_putchar('\n');
+}
+
+static void display_speed(const struct termios *mode, int fancy)
+{
+ //01234567 8 9
+ const char *fmt_str = "%lu %lu\n\0ispeed %lu baud; ospeed %lu baud;";
+ unsigned long ispeed, ospeed;
+
+ ospeed = ispeed = cfgetispeed(mode);
+ if (ispeed == 0 || ispeed == (ospeed = cfgetospeed(mode))) {
+ 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, const 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 HAVE_C_LINE
+ wrapf("line = %d;\n", mode->c_line);
+#else
+ wrapf("\n");
+#endif
+
+ for (i = 0; i != CIDX_min; ++i) {
+ /* 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) == 0
+ && (i == CIDX_eof || i == CIDX_eol)
+ ) {
+ continue;
+ }
+#endif
+ wrapf("%s = %s;", nth_string(control_name, i),
+ 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 (G.current_col) wrapf("\n");
+
+ for (i = 0; i < NUM_mode_info; ++i) {
+ if (mode_info[i].flags & OMIT)
+ continue;
+ if (mode_info[i].type != prev_type) {
+ /* wrapf("\n"); */
+ if (G.current_col) wrapf("\n");
+ prev_type = mode_info[i].type;
+ }
+
+ bitsp = mode_type_flag(mode_info[i].type, mode);
+ mask = mode_info[i].mask ? mode_info[i].mask : mode_info[i].bits;
+ if ((*bitsp & mask) == mode_info[i].bits) {
+ if (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));
+ }
+ }
+ }
+ if (G.current_col) wrapf("\n");
+}
+
+static void sane_mode(struct termios *mode)
+{
+ int i;
+ tcflag_t *bitsp;
+
+ 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) {
+ if (mode_info[i].flags & SANE_SET) {
+ bitsp = mode_type_flag(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(mode_info[i].type, mode);
+ *bitsp = *bitsp & ~((unsigned long)mode_info[i].mask)
+ & ~mode_info[i].bits;
+ }
+ }
+}
+
+/* Save set_mode from #ifdef forest plague */
+#ifndef ONLCR
+#define ONLCR 0
+#endif
+#ifndef OCRNL
+#define OCRNL 0
+#endif
+#ifndef ONLRET
+#define ONLRET 0
+#endif
+#ifndef XCASE
+#define XCASE 0
+#endif
+#ifndef IXANY
+#define IXANY 0
+#endif
+#ifndef TABDLY
+#define TABDLY 0
+#endif
+#ifndef OXTABS
+#define OXTABS 0
+#endif
+#ifndef IUCLC
+#define IUCLC 0
+#endif
+#ifndef OLCUC
+#define OLCUC 0
+#endif
+#ifndef ECHOCTL
+#define ECHOCTL 0
+#endif
+#ifndef ECHOKE
+#define ECHOKE 0
+#endif
+
+static void set_mode(const struct mode_info *info, int reversed,
+ struct termios *mode)
+{
+ tcflag_t *bitsp;
+
+ bitsp = mode_type_flag(info->type, mode);
+
+ if (bitsp) {
+ if (reversed)
+ *bitsp = *bitsp & ~info->mask & ~info->bits;
+ else
+ *bitsp = (*bitsp & ~info->mask) | info->bits;
+ return;
+ }
+
+ /* 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;
+ }
+ }
+ else if (IXANY && info == &mode_info[IDX_decctlq]) {
+ if (reversed)
+ mode->c_iflag |= IXANY;
+ else
+ mode->c_iflag &= ~IXANY;
+ }
+ else if (TABDLY && info == &mode_info[IDX_tabs]) {
+ if (reversed)
+ mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB3;
+ else
+ mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB0;
+ }
+ else if (OXTABS && info == &mode_info[IDX_tabs]) {
+ if (reversed)
+ mode->c_oflag |= OXTABS;
+ else
+ mode->c_oflag &= ~OXTABS;
+ } else
+ if (XCASE && IUCLC && OLCUC
+ && (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;
+ }
+ } 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, "^-") || !strcmp(arg, "undef"))
+ 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, char **argv)
+{
+ struct termios mode;
+ void (*output_func)(const struct termios *, const 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] */
+ --argc;
+ 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
+ case param_line:
+# ifndef TIOCGWINSZ
+ xatoul_range_sfx(argnext, 1, INT_MAX, stty_suffixes);
+ break;
+# endif /* else fall-through */
+#endif
+#ifdef TIOCGWINSZ
+ case param_rows:
+ case param_cols:
+ case param_columns:
+ xatoul_range_sfx(argnext, 1, INT_MAX, stty_suffixes);
+ break;
+ case param_size:
+#endif
+ case param_speed:
+ break;
+ case param_ispeed:
+ /* called for the side effect of xfunc death only */
+ set_speed_or_die(input_speed, argnext, &mode);
+ break;
+ case param_ospeed:
+ /* called for the side effect of xfunc death only */
+ set_speed_or_die(output_speed, argnext, &mode);
+ break;
+ default:
+ if (recover_mode(arg, &mode) == 1) break;
+ if (tty_value_to_baud(xatou(arg)) != (speed_t) -1) break;
+ invalid_argument:
+ bb_error_msg_and_die("invalid argument '%s'", arg);
+ }
+ stty_state &= ~STTY_noargs;
+ }
+
+ /* Specifying both -a and -g is an error */
+ if ((stty_state & (STTY_verbose_output | STTY_recoverable_output)) ==
+ (STTY_verbose_output | STTY_recoverable_output))
+ bb_error_msg_and_die("verbose and stty-readable output styles are mutually exclusive");
+ /* Specifying -a or -g with non-options is an error */
+ if (!(stty_state & STTY_noargs) &&
+ (stty_state & (STTY_verbose_output | STTY_recoverable_output)))
+ bb_error_msg_and_die("modes may not be set when specifying an output style");
+
+ /* Now it is safe to start doing things */
+ if (file_name) {
+ int fd, fdflags;
+ G.device_name = file_name;
+ fd = xopen(G.device_name, O_RDONLY | O_NONBLOCK);
+ if (fd != STDIN_FILENO) {
+ dup2(fd, STDIN_FILENO);
+ close(fd);
+ }
+ fdflags = fcntl(STDIN_FILENO, F_GETFL);
+ if (fdflags < 0 ||
+ fcntl(STDIN_FILENO, F_SETFL, fdflags & ~O_NONBLOCK) < 0)
+ perror_on_device_and_die("%s: cannot reset non-blocking mode");
+ }
+
+ /* Initialize to all zeroes so there is no risk memcmp will report a
+ spurious difference in an uninitialized portion of the structure */
+ memset(&mode, 0, sizeof(mode));
+ if (tcgetattr(STDIN_FILENO, &mode))
+ perror_on_device_and_die("%s");
+
+ if (stty_state & (STTY_verbose_output | STTY_recoverable_output | STTY_noargs)) {
+ get_terminal_width_height(STDOUT_FILENO, &G.max_col, NULL);
+ output_func(&mode, display_all);
+ return EXIT_SUCCESS;
+ }
+
+ /* Second pass: perform actions */
+ k = 0;
+ while (argv[++k]) {
+ const struct mode_info *mp;
+ const struct control_info *cp;
+ const char *arg = argv[k];
+ const char *argnext = argv[k+1];
+ int param;
+
+ if (arg[0] == '-') {
+ mp = find_mode(arg+1);
+ if (mp) {
+ set_mode(mp, 1 /* reversed */, &mode);
+ stty_state |= STTY_require_set_attr;
+ }
+ /* It is an option - already parsed. Skip it */
+ continue;
+ }
+
+ mp = find_mode(arg);
+ if (mp) {
+ set_mode(mp, 0 /* non-reversed */, &mode);
+ stty_state |= STTY_require_set_attr;
+ continue;
+ }
+
+ cp = find_control(arg);
+ if (cp) {
+ ++k;
+ set_control_char_or_die(cp, argnext, &mode);
+ stty_state |= STTY_require_set_attr;
+ continue;
+ }
+
+ param = find_param(arg);
+ if (param & param_need_arg) {
+ ++k;
+ }
+
+ switch (param) {
+#ifdef HAVE_C_LINE
+ case param_line:
+ 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, xatoul_sfx(argnext, stty_suffixes));
+ break;
+ case param_size:
+ display_window_size(0);
+ break;
+ case param_rows:
+ set_window_size(xatoul_sfx(argnext, stty_suffixes), -1);
+ break;
+#endif
+ case param_speed:
+ display_speed(&mode, 0);
+ break;
+ case param_ispeed:
+ set_speed_or_die(input_speed, argnext, &mode);
+ stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
+ break;
+ case param_ospeed:
+ set_speed_or_die(output_speed, argnext, &mode);
+ stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
+ break;
+ default:
+ if (recover_mode(arg, &mode) == 1)
+ stty_state |= STTY_require_set_attr;
+ else /* true: if (tty_value_to_baud(xatou(arg)) != (speed_t) -1) */{
+ set_speed_or_die(both_speeds, arg, &mode);
+ stty_state |= (STTY_require_set_attr | STTY_speed_was_set);
+ } /* else - impossible (caught in the first pass):
+ bb_error_msg_and_die("invalid argument '%s'", arg); */
+ }
+ }
+
+ if (stty_state & STTY_require_set_attr) {
+ struct termios new_mode;
+
+ if (tcsetattr(STDIN_FILENO, TCSADRAIN, &mode))
+ perror_on_device_and_die("%s");
+
+ /* POSIX (according to Zlotnick's book) tcsetattr returns zero if
+ it performs *any* of the requested operations. This means it
+ can report 'success' when it has actually failed to perform
+ some proper subset of the requested operations. To detect
+ this partial failure, get the current terminal attributes and
+ compare them to the requested ones */
+
+ /* Initialize to all zeroes so there is no risk memcmp will report a
+ spurious difference in an uninitialized portion of the structure */
+ memset(&new_mode, 0, sizeof(new_mode));
+ if (tcgetattr(STDIN_FILENO, &new_mode))
+ perror_on_device_and_die("%s");
+
+ if (memcmp(&mode, &new_mode, sizeof(mode)) != 0) {
+#ifdef CIBAUD
+ /* SunOS 4.1.3 (at least) has the problem that after this sequence,
+ tcgetattr (&m1); tcsetattr (&m1); tcgetattr (&m2);
+ sometimes (m1 != m2). The only difference is in the four bits
+ of the c_cflag field corresponding to the baud rate. To save
+ Sun users a little confusion, don't report an error if this
+ happens. But suppress the error only if we haven't tried to
+ set the baud rate explicitly -- otherwise we'd never give an
+ error for a true failure to set the baud rate */
+
+ new_mode.c_cflag &= (~CIBAUD);
+ if ((stty_state & STTY_speed_was_set)
+ || memcmp(&mode, &new_mode, sizeof(mode)) != 0)
+#endif
+ perror_on_device_and_die("%s: cannot perform all requested operations");
+ }
+ }
+
+ return EXIT_SUCCESS;
+}