summaryrefslogtreecommitdiffstats
path: root/bin/stty
diff options
context:
space:
mode:
authorrgrimes <rgrimes@FreeBSD.org>1994-05-26 06:18:55 +0000
committerrgrimes <rgrimes@FreeBSD.org>1994-05-26 06:18:55 +0000
commite3cfc8ce61f788739c66445d903f8beacb40c93d (patch)
treeba7beef9ee9289c4383bad976f88710e44c98b4d /bin/stty
parent862fdf11a2ede45dec0da01ed575525d79468981 (diff)
downloadFreeBSD-src-e3cfc8ce61f788739c66445d903f8beacb40c93d.zip
FreeBSD-src-e3cfc8ce61f788739c66445d903f8beacb40c93d.tar.gz
BSD 4.4 Lite bin Sources
Diffstat (limited to 'bin/stty')
-rw-r--r--bin/stty/Makefile6
-rw-r--r--bin/stty/cchar.c145
-rw-r--r--bin/stty/extern.h48
-rw-r--r--bin/stty/gfmt.c129
-rw-r--r--bin/stty/key.c299
-rw-r--r--bin/stty/modes.c230
-rw-r--r--bin/stty/print.c266
-rw-r--r--bin/stty/stty.1580
-rw-r--r--bin/stty/stty.c161
-rw-r--r--bin/stty/stty.h58
-rw-r--r--bin/stty/util.c64
11 files changed, 1986 insertions, 0 deletions
diff --git a/bin/stty/Makefile b/bin/stty/Makefile
new file mode 100644
index 0000000..69bda05
--- /dev/null
+++ b/bin/stty/Makefile
@@ -0,0 +1,6 @@
+# @(#)Makefile 8.1 (Berkeley) 5/31/93
+
+PROG= stty
+SRCS= cchar.c gfmt.c key.c modes.c print.c stty.c util.c
+
+.include <bsd.prog.mk>
diff --git a/bin/stty/cchar.c b/bin/stty/cchar.c
new file mode 100644
index 0000000..79cb90a
--- /dev/null
+++ b/bin/stty/cchar.c
@@ -0,0 +1,145 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)cchar.c 8.5 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <err.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "stty.h"
+#include "extern.h"
+
+/*
+ * Special control characters.
+ *
+ * Cchars1 are the standard names, cchars2 are the old aliases.
+ * The first are displayed, but both are recognized on the
+ * command line.
+ */
+struct cchar cchars1[] = {
+ { "discard", VDISCARD, CDISCARD },
+ { "dsusp", VDSUSP, CDSUSP },
+ { "eof", VEOF, CEOF },
+ { "eol", VEOL, CEOL },
+ { "eol2", VEOL2, CEOL },
+ { "erase", VERASE, CERASE },
+ { "intr", VINTR, CINTR },
+ { "kill", VKILL, CKILL },
+ { "lnext", VLNEXT, CLNEXT },
+ { "min", VMIN, CMIN },
+ { "quit", VQUIT, CQUIT },
+ { "reprint", VREPRINT, CREPRINT },
+ { "start", VSTART, CSTART },
+ { "status", VSTATUS, CSTATUS },
+ { "stop", VSTOP, CSTOP },
+ { "susp", VSUSP, CSUSP },
+ { "time", VTIME, CTIME },
+ { "werase", VWERASE, CWERASE },
+ { NULL },
+};
+
+struct cchar cchars2[] = {
+ { "brk", VEOL, CEOL },
+ { "flush", VDISCARD, CDISCARD },
+ { "rprnt", VREPRINT, CREPRINT },
+ { NULL },
+};
+
+static int
+c_cchar(a, b)
+ const void *a, *b;
+{
+
+ return (strcmp(((struct cchar *)a)->name, ((struct cchar *)b)->name));
+}
+
+int
+csearch(argvp, ip)
+ char ***argvp;
+ struct info *ip;
+{
+ struct cchar *cp, tmp;
+ long val;
+ char *arg, *ep, *name;
+
+ name = **argvp;
+
+ tmp.name = name;
+ if (!(cp = (struct cchar *)bsearch(&tmp, cchars1,
+ sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar),
+ c_cchar)) && !(cp = (struct cchar *)bsearch(&tmp, cchars1,
+ sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar),
+ c_cchar)))
+ return (0);
+
+ arg = *++*argvp;
+ if (!arg) {
+ warnx("option requires an argument -- %s", name);
+ usage();
+ }
+
+#define CHK(s) (*arg == s[0] && !strcmp(arg, s))
+ if (CHK("undef") || CHK("<undef>"))
+ ip->t.c_cc[cp->sub] = _POSIX_VDISABLE;
+ else if (cp->sub == VMIN || cp->sub == VTIME) {
+ val = strtol(arg, &ep, 10);
+ if (val == _POSIX_VDISABLE) {
+ warnx("value of %ld would disable the option -- %s",
+ val, name);
+ usage();
+ }
+ if (val > UCHAR_MAX) {
+ warnx("maximum option value is %d -- %s",
+ UCHAR_MAX, name);
+ usage();
+ }
+ if (*ep != '\0') {
+ warnx("option requires a numeric argument -- %s", name);
+ usage();
+ }
+ ip->t.c_cc[cp->sub] = val;
+ } else if (arg[0] == '^')
+ ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 :
+ (arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037;
+ else
+ ip->t.c_cc[cp->sub] = arg[0];
+ ip->set = 1;
+ return (1);
+}
diff --git a/bin/stty/extern.h b/bin/stty/extern.h
new file mode 100644
index 0000000..a600ca9
--- /dev/null
+++ b/bin/stty/extern.h
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)extern.h 8.1 (Berkeley) 5/31/93
+ */
+
+int c_cchars __P((const void *, const void *));
+int c_modes __P((const void *, const void *));
+int csearch __P((char ***, struct info *));
+void checkredirect __P((void));
+void gprint __P((struct termios *, struct winsize *, int));
+void gread __P((struct termios *, char *));
+int ksearch __P((char ***, struct info *));
+int msearch __P((char ***, struct info *));
+void optlist __P((void));
+void print __P((struct termios *, struct winsize *, int, enum FMT));
+void usage __P((void));
+
+extern struct cchar cchars1[], cchars2[];
diff --git a/bin/stty/gfmt.c b/bin/stty/gfmt.c
new file mode 100644
index 0000000..97f980a
--- /dev/null
+++ b/bin/stty/gfmt.c
@@ -0,0 +1,129 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)gfmt.c 8.6 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <err.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "stty.h"
+#include "extern.h"
+
+static void
+gerr(s)
+ char *s;
+{
+ if (s)
+ errx(1, "illegal gfmt1 option -- %s", s);
+ else
+ errx(1, "illegal gfmt1 option");
+}
+
+void
+gprint(tp, wp, ldisc)
+ struct termios *tp;
+ struct winsize *wp;
+ int ldisc;
+{
+ struct cchar *cp;
+
+ (void)printf("gfmt1:cflag=%x:iflag=%x:lflag=%x:oflag=%x:",
+ tp->c_cflag, tp->c_iflag, tp->c_lflag, tp->c_oflag);
+ for (cp = cchars1; cp->name; ++cp)
+ (void)printf("%s=%x:", cp->name, tp->c_cc[cp->sub]);
+ (void)printf("ispeed=%d:ospeed=%d\n", cfgetispeed(tp), cfgetospeed(tp));
+}
+
+void
+gread(tp, s)
+ struct termios *tp;
+ char *s;
+{
+ struct cchar *cp;
+ char *ep, *p;
+ long tmp;
+
+ if ((s = strchr(s, ':')) == NULL)
+ gerr(NULL);
+ for (++s; s != NULL;) {
+ p = strsep(&s, ":\0");
+ if (!p || !*p)
+ break;
+ if (!(ep = strchr(p, '=')))
+ gerr(p);
+ *ep++ = '\0';
+ (void)sscanf(ep, "%lx", &tmp);
+
+#define CHK(s) (*p == s[0] && !strcmp(p, s))
+ if (CHK("cflag")) {
+ tp->c_cflag = tmp;
+ continue;
+ }
+ if (CHK("iflag")) {
+ tp->c_iflag = tmp;
+ continue;
+ }
+ if (CHK("ispeed")) {
+ (void)sscanf(ep, "%ld", &tmp);
+ tp->c_ispeed = tmp;
+ continue;
+ }
+ if (CHK("lflag")) {
+ tp->c_lflag = tmp;
+ continue;
+ }
+ if (CHK("oflag")) {
+ tp->c_oflag = tmp;
+ continue;
+ }
+ if (CHK("ospeed")) {
+ (void)sscanf(ep, "%ld", &tmp);
+ tp->c_ospeed = tmp;
+ continue;
+ }
+ for (cp = cchars1; cp->name != NULL; ++cp)
+ if (CHK(cp->name)) {
+ if (cp->sub == VMIN || cp->sub == VTIME)
+ (void)sscanf(ep, "%ld", &tmp);
+ tp->c_cc[cp->sub] = tmp;
+ break;
+ }
+ if (cp->name == NULL)
+ gerr(p);
+ }
+}
diff --git a/bin/stty/key.c b/bin/stty/key.c
new file mode 100644
index 0000000..cf4fde4
--- /dev/null
+++ b/bin/stty/key.c
@@ -0,0 +1,299 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)key.c 8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <err.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "stty.h"
+#include "extern.h"
+
+__BEGIN_DECLS
+void f_all __P((struct info *));
+void f_cbreak __P((struct info *));
+void f_columns __P((struct info *));
+void f_dec __P((struct info *));
+void f_everything __P((struct info *));
+void f_extproc __P((struct info *));
+void f_ispeed __P((struct info *));
+void f_nl __P((struct info *));
+void f_ospeed __P((struct info *));
+void f_raw __P((struct info *));
+void f_rows __P((struct info *));
+void f_sane __P((struct info *));
+void f_size __P((struct info *));
+void f_speed __P((struct info *));
+void f_tty __P((struct info *));
+__END_DECLS
+
+static struct key {
+ char *name; /* name */
+ void (*f) __P((struct info *)); /* function */
+#define F_NEEDARG 0x01 /* needs an argument */
+#define F_OFFOK 0x02 /* can turn off */
+ int flags;
+} keys[] = {
+ { "all", f_all, 0 },
+ { "cbreak", f_cbreak, F_OFFOK },
+ { "cols", f_columns, F_NEEDARG },
+ { "columns", f_columns, F_NEEDARG },
+ { "cooked", f_sane, 0 },
+ { "dec", f_dec, 0 },
+ { "everything", f_everything, 0 },
+ { "extproc", f_extproc, F_OFFOK },
+ { "ispeed", f_ispeed, F_NEEDARG },
+ { "new", f_tty, 0 },
+ { "nl", f_nl, F_OFFOK },
+ { "old", f_tty, 0 },
+ { "ospeed", f_ospeed, F_NEEDARG },
+ { "raw", f_raw, F_OFFOK },
+ { "rows", f_rows, F_NEEDARG },
+ { "sane", f_sane, 0 },
+ { "size", f_size, 0 },
+ { "speed", f_speed, 0 },
+ { "tty", f_tty, 0 },
+};
+
+static int
+c_key(a, b)
+ const void *a, *b;
+{
+
+ return (strcmp(((struct key *)a)->name, ((struct key *)b)->name));
+}
+
+int
+ksearch(argvp, ip)
+ char ***argvp;
+ struct info *ip;
+{
+ char *name;
+ struct key *kp, tmp;
+
+ name = **argvp;
+ if (*name == '-') {
+ ip->off = 1;
+ ++name;
+ } else
+ ip->off = 0;
+
+ tmp.name = name;
+ if (!(kp = (struct key *)bsearch(&tmp, keys,
+ sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
+ return (0);
+ if (!(kp->flags & F_OFFOK) && ip->off) {
+ errx(1, "illegal option -- %s", name);
+ usage();
+ }
+ if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
+ errx(1, "option requires an argument -- %s", name);
+ usage();
+ }
+ kp->f(ip);
+ return (1);
+}
+
+void
+f_all(ip)
+ struct info *ip;
+{
+ print(&ip->t, &ip->win, ip->ldisc, BSD);
+}
+
+void
+f_cbreak(ip)
+ struct info *ip;
+{
+
+ if (ip->off)
+ f_sane(ip);
+ else {
+ ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
+ ip->t.c_oflag |= OPOST;
+ ip->t.c_lflag |= ISIG|IEXTEN;
+ ip->t.c_lflag &= ~ICANON;
+ ip->set = 1;
+ }
+}
+
+void
+f_columns(ip)
+ struct info *ip;
+{
+
+ ip->win.ws_col = atoi(ip->arg);
+ ip->wset = 1;
+}
+
+void
+f_dec(ip)
+ struct info *ip;
+{
+
+ ip->t.c_cc[VERASE] = (u_char)0177;
+ ip->t.c_cc[VKILL] = CTRL('u');
+ ip->t.c_cc[VINTR] = CTRL('c');
+ ip->t.c_lflag &= ~ECHOPRT;
+ ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
+ ip->t.c_iflag &= ~IXANY;
+ ip->set = 1;
+}
+
+void
+f_everything(ip)
+ struct info *ip;
+{
+
+ print(&ip->t, &ip->win, ip->ldisc, BSD);
+}
+
+void
+f_extproc(ip)
+ struct info *ip;
+{
+
+ if (ip->set) {
+ int tmp = 1;
+ (void)ioctl(ip->fd, TIOCEXT, &tmp);
+ } else {
+ int tmp = 0;
+ (void)ioctl(ip->fd, TIOCEXT, &tmp);
+ }
+}
+
+void
+f_ispeed(ip)
+ struct info *ip;
+{
+
+ cfsetispeed(&ip->t, atoi(ip->arg));
+ ip->set = 1;
+}
+
+void
+f_nl(ip)
+ struct info *ip;
+{
+
+ if (ip->off) {
+ ip->t.c_iflag |= ICRNL;
+ ip->t.c_oflag |= ONLCR;
+ } else {
+ ip->t.c_iflag &= ~ICRNL;
+ ip->t.c_oflag &= ~ONLCR;
+ }
+ ip->set = 1;
+}
+
+void
+f_ospeed(ip)
+ struct info *ip;
+{
+
+ cfsetospeed(&ip->t, atoi(ip->arg));
+ ip->set = 1;
+}
+
+void
+f_raw(ip)
+ struct info *ip;
+{
+
+ if (ip->off)
+ f_sane(ip);
+ else {
+ cfmakeraw(&ip->t);
+ ip->t.c_cflag &= ~(CSIZE|PARENB);
+ ip->t.c_cflag |= CS8;
+ ip->set = 1;
+ }
+}
+
+void
+f_rows(ip)
+ struct info *ip;
+{
+
+ ip->win.ws_row = atoi(ip->arg);
+ ip->wset = 1;
+}
+
+void
+f_sane(ip)
+ struct info *ip;
+{
+
+ ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & CLOCAL);
+ ip->t.c_iflag = TTYDEF_IFLAG;
+ ip->t.c_iflag |= ICRNL;
+ /* preserve user-preference flags in lflag */
+#define LKEEP (ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
+ ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
+ ip->t.c_oflag = TTYDEF_OFLAG;
+ ip->set = 1;
+}
+
+void
+f_size(ip)
+ struct info *ip;
+{
+
+ (void)printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
+}
+
+void
+f_speed(ip)
+ struct info *ip;
+{
+
+ (void)printf("%d\n", cfgetospeed(&ip->t));
+}
+
+void
+f_tty(ip)
+ struct info *ip;
+{
+ int tmp;
+
+ tmp = TTYDISC;
+ if (ioctl(0, TIOCSETD, &tmp) < 0)
+ err(1, "TIOCSETD");
+}
diff --git a/bin/stty/modes.c b/bin/stty/modes.c
new file mode 100644
index 0000000..d900da9
--- /dev/null
+++ b/bin/stty/modes.c
@@ -0,0 +1,230 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)modes.c 8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <stddef.h>
+#include <string.h>
+#include "stty.h"
+
+struct modes {
+ char *name;
+ long set;
+ long unset;
+};
+
+/*
+ * The code in optlist() depends on minus options following regular
+ * options, i.e. "foo" must immediately precede "-foo".
+ */
+struct modes cmodes[] = {
+ { "cs5", CS5, CSIZE },
+ { "cs6", CS6, CSIZE },
+ { "cs7", CS7, CSIZE },
+ { "cs8", CS8, CSIZE },
+ { "cstopb", CSTOPB, 0 },
+ { "-cstopb", 0, CSTOPB },
+ { "cread", CREAD, 0 },
+ { "-cread", 0, CREAD },
+ { "parenb", PARENB, 0 },
+ { "-parenb", 0, PARENB },
+ { "parodd", PARODD, 0 },
+ { "-parodd", 0, PARODD },
+ { "parity", PARENB | CS7, PARODD | CSIZE },
+ { "-parity", CS8, PARODD | PARENB | CSIZE },
+ { "evenp", PARENB | CS7, PARODD | CSIZE },
+ { "-evenp", CS8, PARODD | PARENB | CSIZE },
+ { "oddp", PARENB | CS7 | PARODD, CSIZE },
+ { "-oddp", CS8, PARODD | PARENB | CSIZE },
+ { "pass8", CS8, PARODD | PARENB | CSIZE },
+ { "-pass8", PARENB | CS7, PARODD | CSIZE },
+ { "hupcl", HUPCL, 0 },
+ { "-hupcl", 0, HUPCL },
+ { "hup", HUPCL, 0 },
+ { "-hup", 0, HUPCL },
+ { "clocal", CLOCAL, 0 },
+ { "-clocal", 0, CLOCAL },
+ { "crtscts", CRTSCTS, 0 },
+ { "-crtscts", 0, CRTSCTS },
+ { "mdmbuf", MDMBUF, 0 },
+ { "-mdmbuf", 0, MDMBUF },
+ { NULL },
+};
+
+struct modes imodes[] = {
+ { "ignbrk", IGNBRK, 0 },
+ { "-ignbrk", 0, IGNBRK },
+ { "brkint", BRKINT, 0 },
+ { "-brkint", 0, BRKINT },
+ { "ignpar", IGNPAR, 0 },
+ { "-ignpar", 0, IGNPAR },
+ { "parmrk", PARMRK, 0 },
+ { "-parmrk", 0, PARMRK },
+ { "inpck", INPCK, 0 },
+ { "-inpck", 0, INPCK },
+ { "istrip", ISTRIP, 0 },
+ { "-istrip", 0, ISTRIP },
+ { "inlcr", INLCR, 0 },
+ { "-inlcr", 0, INLCR },
+ { "igncr", IGNCR, 0 },
+ { "-igncr", 0, IGNCR },
+ { "icrnl", ICRNL, 0 },
+ { "-icrnl", 0, ICRNL },
+ { "ixon", IXON, 0 },
+ { "-ixon", 0, IXON },
+ { "flow", IXON, 0 },
+ { "-flow", 0, IXON },
+ { "ixoff", IXOFF, 0 },
+ { "-ixoff", 0, IXOFF },
+ { "tandem", IXOFF, 0 },
+ { "-tandem", 0, IXOFF },
+ { "ixany", IXANY, 0 },
+ { "-ixany", 0, IXANY },
+ { "decctlq", 0, IXANY },
+ { "-decctlq", IXANY, 0 },
+ { "imaxbel", IMAXBEL, 0 },
+ { "-imaxbel", 0, IMAXBEL },
+ { NULL },
+};
+
+struct modes lmodes[] = {
+ { "echo", ECHO, 0 },
+ { "-echo", 0, ECHO },
+ { "echoe", ECHOE, 0 },
+ { "-echoe", 0, ECHOE },
+ { "crterase", ECHOE, 0 },
+ { "-crterase", 0, ECHOE },
+ { "crtbs", ECHOE, 0 }, /* crtbs not supported, close enough */
+ { "-crtbs", 0, ECHOE },
+ { "echok", ECHOK, 0 },
+ { "-echok", 0, ECHOK },
+ { "echoke", ECHOKE, 0 },
+ { "-echoke", 0, ECHOKE },
+ { "crtkill", ECHOKE, 0 },
+ { "-crtkill", 0, ECHOKE },
+ { "altwerase", ALTWERASE, 0 },
+ { "-altwerase", 0, ALTWERASE },
+ { "iexten", IEXTEN, 0 },
+ { "-iexten", 0, IEXTEN },
+ { "echonl", ECHONL, 0 },
+ { "-echonl", 0, ECHONL },
+ { "echoctl", ECHOCTL, 0 },
+ { "-echoctl", 0, ECHOCTL },
+ { "ctlecho", ECHOCTL, 0 },
+ { "-ctlecho", 0, ECHOCTL },
+ { "echoprt", ECHOPRT, 0 },
+ { "-echoprt", 0, ECHOPRT },
+ { "prterase", ECHOPRT, 0 },
+ { "-prterase", 0, ECHOPRT },
+ { "isig", ISIG, 0 },
+ { "-isig", 0, ISIG },
+ { "icanon", ICANON, 0 },
+ { "-icanon", 0, ICANON },
+ { "noflsh", NOFLSH, 0 },
+ { "-noflsh", 0, NOFLSH },
+ { "tostop", TOSTOP, 0 },
+ { "-tostop", 0, TOSTOP },
+ { "flusho", FLUSHO, 0 },
+ { "-flusho", 0, FLUSHO },
+ { "pendin", PENDIN, 0 },
+ { "-pendin", 0, PENDIN },
+ { "crt", ECHOE|ECHOKE|ECHOCTL, ECHOK|ECHOPRT },
+ { "-crt", ECHOK, ECHOE|ECHOKE|ECHOCTL },
+ { "newcrt", ECHOE|ECHOKE|ECHOCTL, ECHOK|ECHOPRT },
+ { "-newcrt", ECHOK, ECHOE|ECHOKE|ECHOCTL },
+ { "nokerninfo", NOKERNINFO, 0 },
+ { "-nokerninfo",0, NOKERNINFO },
+ { "kerninfo", 0, NOKERNINFO },
+ { "-kerninfo", NOKERNINFO, 0 },
+ { NULL },
+};
+
+struct modes omodes[] = {
+ { "opost", OPOST, 0 },
+ { "-opost", 0, OPOST },
+ { "litout", 0, OPOST },
+ { "-litout", OPOST, 0 },
+ { "onlcr", ONLCR, 0 },
+ { "-onlcr", 0, ONLCR },
+ { "tabs", 0, OXTABS }, /* "preserve" tabs */
+ { "-tabs", OXTABS, 0 },
+ { "oxtabs", OXTABS, 0 },
+ { "-oxtabs", 0, OXTABS },
+ { NULL },
+};
+
+#define CHK(s) (*name == s[0] && !strcmp(name, s))
+
+int
+msearch(argvp, ip)
+ char ***argvp;
+ struct info *ip;
+{
+ struct modes *mp;
+ char *name;
+
+ name = **argvp;
+
+ for (mp = cmodes; mp->name; ++mp)
+ if (CHK(mp->name)) {
+ ip->t.c_cflag &= ~mp->unset;
+ ip->t.c_cflag |= mp->set;
+ ip->set = 1;
+ return (1);
+ }
+ for (mp = imodes; mp->name; ++mp)
+ if (CHK(mp->name)) {
+ ip->t.c_iflag &= ~mp->unset;
+ ip->t.c_iflag |= mp->set;
+ ip->set = 1;
+ return (1);
+ }
+ for (mp = lmodes; mp->name; ++mp)
+ if (CHK(mp->name)) {
+ ip->t.c_lflag &= ~mp->unset;
+ ip->t.c_lflag |= mp->set;
+ ip->set = 1;
+ return (1);
+ }
+ for (mp = omodes; mp->name; ++mp)
+ if (CHK(mp->name)) {
+ ip->t.c_oflag &= ~mp->unset;
+ ip->t.c_oflag |= mp->set;
+ ip->set = 1;
+ return (1);
+ }
+ return (0);
+}
diff --git a/bin/stty/print.c b/bin/stty/print.c
new file mode 100644
index 0000000..21f5379
--- /dev/null
+++ b/bin/stty/print.c
@@ -0,0 +1,266 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)print.c 8.6 (Berkeley) 4/16/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "stty.h"
+#include "extern.h"
+
+static void binit __P((char *));
+static void bput __P((char *));
+static char *ccval __P((struct cchar *, int));
+
+void
+print(tp, wp, ldisc, fmt)
+ struct termios *tp;
+ struct winsize *wp;
+ int ldisc;
+ enum FMT fmt;
+{
+ struct cchar *p;
+ long tmp;
+ u_char *cc;
+ int cnt, ispeed, ospeed;
+ char buf1[100], buf2[100];
+
+ cnt = 0;
+
+ /* Line discipline. */
+ if (ldisc != TTYDISC) {
+ switch(ldisc) {
+ case TABLDISC:
+ cnt += printf("tablet disc; ");
+ break;
+ case SLIPDISC:
+ cnt += printf("slip disc; ");
+ break;
+ default:
+ cnt += printf("#%d disc; ", ldisc);
+ break;
+ }
+ }
+
+ /* Line speed. */
+ ispeed = cfgetispeed(tp);
+ ospeed = cfgetospeed(tp);
+ if (ispeed != ospeed)
+ cnt +=
+ printf("ispeed %d baud; ospeed %d baud;", ispeed, ospeed);
+ else
+ cnt += printf("speed %d baud;", ispeed);
+ if (fmt >= BSD)
+ cnt += printf(" %d rows; %d columns;", wp->ws_row, wp->ws_col);
+ if (cnt)
+ (void)printf("\n");
+
+#define on(f) ((tmp&f) != 0)
+#define put(n, f, d) \
+ if (fmt >= BSD || on(f) != d) \
+ bput(n + on(f));
+
+ /* "local" flags */
+ tmp = tp->c_lflag;
+ binit("lflags");
+ put("-icanon", ICANON, 1);
+ put("-isig", ISIG, 1);
+ put("-iexten", IEXTEN, 1);
+ put("-echo", ECHO, 1);
+ put("-echoe", ECHOE, 0);
+ put("-echok", ECHOK, 0);
+ put("-echoke", ECHOKE, 0);
+ put("-echonl", ECHONL, 0);
+ put("-echoctl", ECHOCTL, 0);
+ put("-echoprt", ECHOPRT, 0);
+ put("-altwerase", ALTWERASE, 0);
+ put("-noflsh", NOFLSH, 0);
+ put("-tostop", TOSTOP, 0);
+ put("-flusho", FLUSHO, 0);
+ put("-pendin", PENDIN, 0);
+ put("-nokerninfo", NOKERNINFO, 0);
+ put("-extproc", EXTPROC, 0);
+
+ /* input flags */
+ tmp = tp->c_iflag;
+ binit("iflags");
+ put("-istrip", ISTRIP, 0);
+ put("-icrnl", ICRNL, 1);
+ put("-inlcr", INLCR, 0);
+ put("-igncr", IGNCR, 0);
+ put("-ixon", IXON, 1);
+ put("-ixoff", IXOFF, 0);
+ put("-ixany", IXANY, 1);
+ put("-imaxbel", IMAXBEL, 1);
+ put("-ignbrk", IGNBRK, 0);
+ put("-brkint", BRKINT, 1);
+ put("-inpck", INPCK, 0);
+ put("-ignpar", IGNPAR, 0);
+ put("-parmrk", PARMRK, 0);
+
+ /* output flags */
+ tmp = tp->c_oflag;
+ binit("oflags");
+ put("-opost", OPOST, 1);
+ put("-onlcr", ONLCR, 1);
+ put("-oxtabs", OXTABS, 1);
+
+ /* control flags (hardware state) */
+ tmp = tp->c_cflag;
+ binit("cflags");
+ put("-cread", CREAD, 1);
+ switch(tmp&CSIZE) {
+ case CS5:
+ bput("cs5");
+ break;
+ case CS6:
+ bput("cs6");
+ break;
+ case CS7:
+ bput("cs7");
+ break;
+ case CS8:
+ bput("cs8");
+ break;
+ }
+ bput("-parenb" + on(PARENB));
+ put("-parodd", PARODD, 0);
+ put("-hupcl", HUPCL, 1);
+ put("-clocal", CLOCAL, 0);
+ put("-cstopb", CSTOPB, 0);
+ put("-crtscts", CRTSCTS, 0);
+ put("-mdmbuf", MDMBUF, 0);
+
+ /* special control characters */
+ cc = tp->c_cc;
+ if (fmt == POSIX) {
+ binit("cchars");
+ for (p = cchars1; p->name; ++p) {
+ (void)snprintf(buf1, sizeof(buf1), "%s = %s;",
+ p->name, ccval(p, cc[p->sub]));
+ bput(buf1);
+ }
+ binit(NULL);
+ } else {
+ binit(NULL);
+ for (p = cchars1, cnt = 0; p->name; ++p) {
+ if (fmt != BSD && cc[p->sub] == p->def)
+ continue;
+#define WD "%-8s"
+ (void)sprintf(buf1 + cnt * 8, WD, p->name);
+ (void)sprintf(buf2 + cnt * 8, WD, ccval(p, cc[p->sub]));
+ if (++cnt == LINELENGTH / 8) {
+ cnt = 0;
+ (void)printf("%s\n", buf1);
+ (void)printf("%s\n", buf2);
+ }
+ }
+ if (cnt) {
+ (void)printf("%s\n", buf1);
+ (void)printf("%s\n", buf2);
+ }
+ }
+}
+
+static int col;
+static char *label;
+
+static void
+binit(lb)
+ char *lb;
+{
+
+ if (col) {
+ (void)printf("\n");
+ col = 0;
+ }
+ label = lb;
+}
+
+static void
+bput(s)
+ char *s;
+{
+
+ if (col == 0) {
+ col = printf("%s: %s", label, s);
+ return;
+ }
+ if ((col + strlen(s)) > LINELENGTH) {
+ (void)printf("\n\t");
+ col = printf("%s", s) + 8;
+ return;
+ }
+ col += printf(" %s", s);
+}
+
+static char *
+ccval(p, c)
+ struct cchar *p;
+ int c;
+{
+ static char buf[5];
+ char *bp;
+
+ if (c == _POSIX_VDISABLE)
+ return ("<undef>");
+
+ if (p->sub == VMIN || p->sub == VTIME) {
+ (void)snprintf(buf, sizeof(buf), "%d", c);
+ return (buf);
+ }
+ bp = buf;
+ if (c & 0200) {
+ *bp++ = 'M';
+ *bp++ = '-';
+ c &= 0177;
+ }
+ if (c == 0177) {
+ *bp++ = '^';
+ *bp++ = '?';
+ }
+ else if (c < 040) {
+ *bp++ = '^';
+ *bp++ = c + '@';
+ }
+ else
+ *bp++ = c;
+ *bp = '\0';
+ return (buf);
+}
diff --git a/bin/stty/stty.1 b/bin/stty/stty.1
new file mode 100644
index 0000000..e9665d7
--- /dev/null
+++ b/bin/stty/stty.1
@@ -0,0 +1,580 @@
+.\" Copyright (c) 1990, 1993, 1994
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the Institute of Electrical and Electronics Engineers, Inc.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)stty.1 8.4 (Berkeley) 4/18/94
+.\"
+.Dd April 18, 1994
+.Dt STTY 1
+.Os
+.Sh NAME
+.Nm stty
+.Nd set the options for a terminal device interface
+.Sh SYNOPSIS
+.Nm stty
+.Op Fl a | Fl e | Fl g
+.Op Fl f Ar file
+.Op operands
+.Sh DESCRIPTION
+The
+.Nm stty
+utility sets or reports on terminal
+characteristics for the device that is its standard input.
+If no options or operands are specified, it reports the settings of a subset
+of characteristics as well as additional ones if they differ from their
+default values.
+Otherwise it modifies
+the terminal state according to the specified arguments.
+Some combinations of arguments are mutually
+exclusive on some terminal types.
+.Pp
+The following options are available:
+.Bl -tag -width Ds
+.It Fl a
+Display all the current settings for the terminal to standard output
+as per
+.St -p1003.2 .
+.It Fl e
+Display all the current settings for the terminal to standard output
+in the traditional
+.Tn BSD
+``all'' and ``everything'' formats.
+.It Fl f
+Open and use the terminal named by
+.Ar file
+rather than using standard input. The file is opened
+using the
+.Dv O_NONBLOCK
+flag of
+.Fn open ,
+making it possible to
+set or display settings on a terminal that might otherwise
+block on the open.
+.It Fl g
+Display all the current settings for the terminal to standard output
+in a form that may be used as an argument to a subsequent invocation of
+.Nm stty
+to restore the current terminal state as per
+.St -p1003.2 .
+.El
+.Pp
+The following arguments are available to set the terminal
+characteristics:
+.Ss Control Modes:
+.Pp
+Control mode flags affect hardware characteristics associated with the
+terminal. This corresponds to the c_cflag in the termios structure.
+.Bl -tag -width Fl
+.It Cm parenb Pq Fl parenb
+Enable (disable) parity generation
+and detection.
+.It Cm parodd Pq Fl parodd
+Select odd (even) parity.
+.It Cm cs5 cs6 cs7 cs8
+Select character size, if possible.
+.It Ar number
+Set terminal baud rate to the
+number given, if possible.
+If the
+baud rate is set to zero, modem
+control is no longer
+asserted.
+.It Cm ispeed Ar number
+Set terminal input baud rate to the
+number given, if possible.
+If the
+input baud rate is set to zero, the
+input baud rate is set to the
+value of the output baud
+rate.
+.It Cm ospeed Ar number
+Set terminal output baud rate to
+the number given, if possible.
+If
+the output baud rate is set to
+zero, modem control is
+no longer asserted.
+.It Cm speed Ar number
+This sets both
+.Cm ispeed
+and
+.Cm ospeed
+to
+.Ar number .
+.It Cm hupcl Pq Fl hupcl
+Stop asserting modem control
+(do not stop asserting modem control) on last close.
+.It Cm hup Pq Fl hup
+Same as hupcl
+.Pq Fl hupcl .
+.It Cm cstopb Pq Fl cstopb
+Use two (one) stop bits per character.
+.It Cm cread Pq Fl cread
+Enable (disable) the receiver.
+.It Cm clocal Pq Fl clocal
+Assume a line without (with) modem
+control.
+.It Cm crtscts Pq Fl crtscts
+Enable RTS/CTS flow control.
+.El
+.Ss Input Modes:
+This corresponds to the c_iflag in the termios structure.
+.Bl -tag -width Fl
+.It Cm ignbrk Pq Fl ignbrk
+Ignore (do not ignore) break on
+input.
+.It Cm brkint Pq Fl brkint
+Signal (do not signal)
+.Dv INTR
+on
+break.
+.It Cm ignpar Pq Fl ignpar
+Ignore (do not ignore) parity
+errors.
+.It Cm parmrk Pq Fl parmrk
+Mark (do not mark) parity errors.
+.It Cm inpck Pq Fl inpck
+Enable (disable) input parity
+checking.
+.It Cm istrip Pq Fl istrip
+Strip (do not strip) input characters
+to seven bits.
+.It Cm inlcr Pq Fl inlcr
+Map (do not map)
+.Dv NL
+to
+.Dv CR
+on input.
+.It Cm igncr Pq Fl igncr
+Ignore (do not ignore)
+.Dv CR
+on input.
+.It Cm icrnl Pq Fl icrnl
+Map (do not map)
+.Dv CR
+to
+.Dv NL
+on input.
+.It Cm ixon Pq Fl ixon
+Enable (disable)
+.Dv START/STOP
+output
+control.
+Output from the system is
+stopped when the system receives
+.Dv STOP
+and started when the system
+receives
+.Dv START ,
+or if
+.Cm ixany
+is set, any character restarts output.
+.It Cm ixoff Pq Fl ixoff
+Request that the system send (not
+send)
+.Dv START/STOP
+characters when
+the input queue is nearly
+empty/full.
+.It Cm ixany Pq Fl ixany
+Allow any character (allow only
+.Dv START )
+to restart output.
+.It Cm imaxbel Pq Fl imaxbel
+The system imposes a limit of
+.Dv MAX_INPUT
+(currently 255) characters in the input queue. If
+.Cm imaxbel
+is set and the input queue limit has been reached,
+subsequent input causes the system to send an ASCII BEL
+character to the output queue (the terminal beeps at you). Otherwise,
+if
+.Cm imaxbel
+is unset and the input queue is full, the next input character causes
+the entire input and output queues to be discarded.
+.El
+.Ss Output Modes:
+This corresponds to the c_oflag of the termios structure.
+.Bl -tag -width Fl
+.It Cm opost Pq Fl opost
+Post-process output (do not
+post-process output; ignore all other
+output modes).
+.It Cm onlcr Pq Fl onlcr
+Map (do not map)
+.Dv NL
+to
+.DV CR-NL
+on output.
+.It Cm oxtabs Pq Fl oxtabs
+Expand (do not expand) tabs to spaces on output.
+.El
+.Ss Local Modes:
+.Pp
+Local mode flags (lflags) affect various and sundry characteristics of terminal
+processing.
+Historically the term "local" pertained to new job control features
+implemented by Jim Kulp on a
+.Tn Pdp 11/70
+at
+.Tn IIASA .
+Later the driver ran on the first
+.Tn VAX
+at Evans Hall, UC Berkeley, where the job control details
+were greatly modified but the structure definitions and names
+remained essentially unchanged.
+The second interpretation of the 'l' in lflag
+is ``line discipline flag'' which corresponds to the
+.Ar c_lflag
+of the
+.Ar termios
+structure.
+.Bl -tag -width Fl
+.It Cm isig Pq Fl isig
+Enable (disable) the checking of
+characters against the special control
+characters
+.Dv INTR , QUIT ,
+and
+.Dv SUSP .
+.It Cm icanon Pq Fl icanon
+Enable (disable) canonical input
+.Pf ( Dv ERASE
+and
+.Dv KILL
+processing).
+.It Cm iexten Pq Fl iexten
+Enable (disable) any implementation
+defined special control characters
+not currently controlled by icanon,
+isig, or ixon.
+.It Cm echo Pq Fl echo
+Echo back (do not echo back) every
+character typed.
+.It Cm echoe Pq Fl echoe
+The
+.Dv ERASE
+character shall (shall
+not) visually erase the last character
+in the current line from the
+display, if possible.
+.It Cm echok Pq Fl echok
+Echo (do not echo)
+.Dv NL
+after
+.Dv KILL
+character.
+.It Cm echoke Pq Fl echoke
+The
+.Dv KILL
+character shall (shall
+not) visually erase the
+the current line from the
+display, if possible.
+.It Cm echonl Pq Fl echonl
+Echo (do not echo)
+.Dv NL ,
+even if echo
+is disabled.
+.It Cm echoctl Pq Fl echoctl
+If
+.Cm echoctl
+is set, echo control characters as ^X. Otherwise control characters
+echo as themselves.
+.It Cm echoprt Pq Fl echoprt
+For printing terminals. If set, echo erased characters backwards within ``\\''
+and ``/''. Otherwise, disable this feature.
+.It Cm noflsh Pq Fl noflsh
+Disable (enable) flush after
+.Dv INTR , QUIT , SUSP .
+.It Cm tostop Pq Fl tostop
+Send (do not send)
+.Dv SIGTTOU
+for background output. This causes background jobs to stop if they attempt
+terminal output.
+.It Cm altwerase Pq Fl altwerase
+Use (do not use) an alternate word erase algorithm when processing
+.Dv WERASE
+characters.
+This alternate algorithm considers sequences of
+alphanumeric/underscores as words.
+It also skips the first preceding character in its classification
+(as a convenience since the one preceding character could have been
+erased with simply an
+.Dv ERASE
+character.)
+.It Cm mdmbuf Pq Fl mdmbuf
+If set, flow control output based on condition of Carrier Detect. Otherwise
+writes return an error if Carrier Detect is low (and Carrier is not being
+ignored with the
+.Dv CLOCAL
+flag.)
+.It Cm flusho Pq Fl flusho
+Indicates output is (is not) being discarded.
+.It Cm pendin Pq Fl pendin
+Indicates input is (is not) pending after a switch from non-canonical
+to canonical mode and will be re-input when a read becomes pending
+or more input arrives.
+.El
+.Ss Control Characters:
+.Bl -tag -width Fl
+.It Ar control-character Ar string
+Set
+.Ar control-character
+to
+.Ar string .
+If string is a single character,
+the control character is set to
+that character.
+If string is the
+two character sequence "^-" or the
+string "undef" the control character
+is disabled (i.e. set to
+.Pf { Dv _POSIX_VDISABLE Ns } . )
+.Pp
+Recognized control-characters:
+.Bd -ragged -offset indent
+.Bl -column character Subscript
+.It control-
+.It character Subscript Description
+.It _________ _________ _______________
+.It eof Ta Tn VEOF EOF No character
+.It eol Ta Tn VEOL EOL No character
+.It eol2 Ta Tn VEOL2 EOL2 No character
+.It erase Ta Tn VERASE ERASE No character
+.It werase Ta Tn VWERASE WERASE No character
+.It intr Ta Tn VINTR INTR No character
+.It kill Ta Tn VKILL KILL No character
+.It quit Ta Tn VQUIT QUIT No character
+.It susp Ta Tn VSUSP SUSP No character
+.It start Ta Tn VSTART START No character
+.It stop Ta Tn VSTOP STOP No character
+.It dsusp Ta Tn VDSUSP DSUSP No character
+.It lnext Ta Tn VLNEXT LNEXT No character
+.It reprint Ta Tn VREPRINT REPRINT No character
+.It status Ta Tn VSTATUS STATUS No character
+.El
+.Ed
+.It Cm min Ar number
+.It Cm time Ar number
+Set the value of min or time to
+number.
+.Dv MIN
+and
+.Dv TIME
+are used in
+Non-Canonical mode input processing
+(-icanon).
+.El
+.Ss Combination Modes:
+.Pp
+.Bl -tag -width Fl
+.It Ar saved settings
+Set the current terminal
+characteristics to the saved settings
+produced by the
+.Fl g
+option.
+.It Cm evenp No or Cm parity
+Enable parenb and cs7; disable
+parodd.
+.It Cm oddp
+Enable parenb, cs7, and parodd.
+.It Fl parity , evenp , oddp
+Disable parenb, and set cs8.
+.It Cm \&nl Pq Fl \&nl
+Enable (disable) icrnl.
+In addition
+-nl unsets inlcr and igncr.
+.It Cm ek
+Reset
+.Dv ERASE
+and
+.Dv KILL
+characters
+back to system defaults.
+.It Cm sane
+Resets all modes to reasonable values for interactive terminal use.
+.It Cm tty
+Set the line discipline to the standard terminal line discipline
+.Dv TTYDISC .
+.It Cm crt Pq Fl crt
+Set (disable) all modes suitable for a CRT display device.
+.It Cm kerninfo Pq Fl kerninfo
+Enable (disable) the system generated status line associated with
+processing a
+.Dv STATUS
+character (usually set to ^T). The status line consists of the
+system load average, the current command name, its process ID, the
+event the process is waiting on (or the status of the process), the user
+and system times, percent cpu, and current memory usage.
+.It Cm columns Ar number
+The terminal size is recorded as having
+.Ar number
+columns.
+.It Cm cols Ar number
+is an alias for
+.Cm columns.
+.It Cm rows Ar number
+The terminal size is recorded as having
+.Ar number
+rows.
+.It Cm dec
+Set modes suitable for users of Digital Equipment Corporation systems (
+.Dv ERASE ,
+.Dv KILL ,
+and
+.Dv INTR
+characters are set to ^?, ^U, and ^C;
+.Dv ixany
+is disabled, and
+.Dv crt
+is enabled.)
+.It Cm extproc Pq Fl extproc
+If set, this flag indicates that some amount of terminal processing is being
+performed by either the terminal hardware or by the remote side connected
+to a pty.
+.It Cm raw Pq Fl raw
+If set, change the modes of the terminal so that no input or output processing
+is performed. If unset, change the modes of the terminal to some reasonable
+state that performs input and output processing. Note that since the
+terminal driver no longer has a single
+.Dv RAW
+bit, it is not possible to intuit what flags were set prior to setting
+.Cm raw .
+This means that unsetting
+.Cm raw
+may not put back all the setting that were previously in effect.
+To set the terminal into a raw state and then accurately restore it, the following
+shell code is recommended:
+.nf
+
+save_state=$(stty -g)
+stty raw
+\&...
+stty "$save_state"
+
+.fi
+.It Cm size
+The size of the terminal is printed as two numbers on a single line,
+first rows, then columns.
+.El
+.Ss Compatibility Modes:
+.Pp
+These modes remain for compatibility with the previous version of
+the stty command.
+.Bl -tag -width Fl
+.It Cm all
+Reports all the terminal modes as with
+.Cm stty Fl a
+except that the control characters are printed in a columnar format.
+.It Cm everything
+Same as
+.Cm all .
+.It Cm cooked
+Same as
+.Cm sane .
+.It Cm cbreak
+If set, enables
+.Cm brkint , ixon , imaxbel , opost ,
+.Cm isig , iexten ,
+and
+.Cm Fl icanon .
+If unset, same as
+.Cm sane .
+.It Cm new
+Same as
+.Cm tty .
+.It Cm old
+Same as
+.Cm tty .
+.It Cm newcrt Pq Fl newcrt
+Same as
+.Cm crt .
+.It Cm pass8
+The converse of
+.Cm parity .
+.It Cm tandem Pq Fl tandem
+Same as
+.Cm ixoff .
+.It Cm decctlq Pq Fl decctlq
+The converse of
+.Cm ixany .
+.It Cm crterase Pq Fl crterase
+Same as
+.Cm echoe .
+.It Cm crtbs Pq Fl crtbs
+Same as
+.Cm echoe .
+.It Cm crtkill Pq Fl crtkill
+Same as
+.Cm echoke .
+.It Cm ctlecho Pq Fl ctlecho
+Same as
+.Cm echoctl .
+.It Cm prterase Pq Fl prterase
+Same as
+.Cm echoprt .
+.It Cm litout Pq Fl litout
+The converse of
+.Cm opost .
+.It Cm tabs Pq Fl tabs
+The converse of
+.Cm tabs .
+.It Cm brk Ar value
+Same as the control character
+.Cm eol .
+.It Cm flush Ar value
+Same as the control character
+.Cm discard .
+.It Cm rprnt Ar value
+Same as the control character
+.Cm reprint .
+.El
+.Pp
+The
+.Nm stty
+utility exits with a value of 0 if successful, and >0 if an error occurs.
+.Sh SEE ALSO
+.Xr termios 4
+.Sh STANDARDS
+The
+.Nm stty
+function is expected to be
+.St -p1003.2
+compatible. The flags
+.Fl e
+and
+.Fl f
+are
+extensions to the standard.
diff --git a/bin/stty/stty.c b/bin/stty/stty.c
new file mode 100644
index 0000000..4a840c2
--- /dev/null
+++ b/bin/stty/stty.c
@@ -0,0 +1,161 @@
+/*-
+ * Copyright (c) 1989, 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1991, 1993, 1994\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)stty.c 8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "stty.h"
+#include "extern.h"
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct info i;
+ enum FMT fmt;
+ int ch;
+
+ fmt = NOTSET;
+ i.fd = STDIN_FILENO;
+
+ opterr = 0;
+ while (optind < argc &&
+ strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
+ (ch = getopt(argc, argv, "aef:g")) != EOF)
+ switch(ch) {
+ case 'a': /* undocumented: POSIX compatibility */
+ fmt = POSIX;
+ break;
+ case 'e':
+ fmt = BSD;
+ break;
+ case 'f':
+ if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
+ err(1, "%s", optarg);
+ break;
+ case 'g':
+ fmt = GFLAG;
+ break;
+ case '?':
+ default:
+ goto args;
+ }
+
+args: argc -= optind;
+ argv += optind;
+
+ if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
+ err(1, "TIOCGETD");
+ if (tcgetattr(i.fd, &i.t) < 0)
+ err(1, "tcgetattr");
+ if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
+ warn("TIOCGWINSZ: %s\n", strerror(errno));
+
+ checkredirect(); /* conversion aid */
+
+ switch(fmt) {
+ case NOTSET:
+ if (*argv)
+ break;
+ /* FALLTHROUGH */
+ case BSD:
+ case POSIX:
+ print(&i.t, &i.win, i.ldisc, fmt);
+ break;
+ case GFLAG:
+ gprint(&i.t, &i.win, i.ldisc);
+ break;
+ }
+
+ for (i.set = i.wset = 0; *argv; ++argv) {
+ if (ksearch(&argv, &i))
+ continue;
+
+ if (csearch(&argv, &i))
+ continue;
+
+ if (msearch(&argv, &i))
+ continue;
+
+ if (isdigit(**argv)) {
+ int speed;
+
+ speed = atoi(*argv);
+ cfsetospeed(&i.t, speed);
+ cfsetispeed(&i.t, speed);
+ i.set = 1;
+ continue;
+ }
+
+ if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
+ gread(&i.t, *argv + sizeof("gfmt1") - 1);
+ continue;
+ }
+
+ warnx("illegal option -- %s", *argv);
+ usage();
+ }
+
+ if (i.set && tcsetattr(i.fd, 0, &i.t) < 0)
+ err(1, "tcsetattr");
+ if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0)
+ warn("TIOCSWINSZ");
+ exit(0);
+}
+
+void
+usage()
+{
+
+ (void)fprintf(stderr, "usage: stty: [-a|-e|-g] [-f file] [options]\n");
+ exit (1);
+}
diff --git a/bin/stty/stty.h b/bin/stty/stty.h
new file mode 100644
index 0000000..92cffcc
--- /dev/null
+++ b/bin/stty/stty.h
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)stty.h 8.1 (Berkeley) 5/31/93
+ */
+
+#include <sys/ioctl.h>
+#include <termios.h>
+
+struct info {
+ int fd; /* file descriptor */
+ int ldisc; /* line discipline */
+ int off; /* turn off */
+ int set; /* need set */
+ int wset; /* need window set */
+ char *arg; /* argument */
+ struct termios t; /* terminal info */
+ struct winsize win; /* window info */
+};
+
+struct cchar {
+ char *name;
+ int sub;
+ u_char def;
+};
+
+enum FMT { NOTSET, GFLAG, BSD, POSIX };
+
+#define LINELENGTH 72
diff --git a/bin/stty/util.c b/bin/stty/util.c
new file mode 100644
index 0000000..95bea15
--- /dev/null
+++ b/bin/stty/util.c
@@ -0,0 +1,64 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)util.c 8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "stty.h"
+#include "extern.h"
+
+/*
+ * Gross, but since we're changing the control descriptor from 1 to 0, most
+ * users will be probably be doing "stty > /dev/sometty" by accident. If 1
+ * and 2 are both ttys, but not the same, assume that 1 was incorrectly
+ * redirected.
+ */
+void
+checkredirect()
+{
+ struct stat sb1, sb2;
+
+ if (isatty(STDOUT_FILENO) && isatty(STDERR_FILENO) &&
+ !fstat(STDOUT_FILENO, &sb1) && !fstat(STDERR_FILENO, &sb2) &&
+ (sb1.st_rdev != sb2.st_rdev))
+warn("stdout appears redirected, but stdin is the control descriptor");
+}
OpenPOWER on IntegriCloud