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author | delphij <delphij@FreeBSD.org> | 2014-05-07 08:06:54 +0000 |
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committer | delphij <delphij@FreeBSD.org> | 2014-05-07 08:06:54 +0000 |
commit | ebef83dbd2b82b4ddf471e1d2b423eef86ccf414 (patch) | |
tree | 10b2f68e28cd9e992a4ec257c552c27e4588d64c /usr.bin/bc/tty.c | |
parent | d6c003e92088f30bee1dd2cb9013d5686ad0de3d (diff) | |
download | FreeBSD-src-ebef83dbd2b82b4ddf471e1d2b423eef86ccf414.zip FreeBSD-src-ebef83dbd2b82b4ddf471e1d2b423eef86ccf414.tar.gz |
MFC r264573+264608+264609:
Sync with OpenBSD.
Diffstat (limited to 'usr.bin/bc/tty.c')
-rw-r--r-- | usr.bin/bc/tty.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/usr.bin/bc/tty.c b/usr.bin/bc/tty.c new file mode 100644 index 0000000..05f9d14 --- /dev/null +++ b/usr.bin/bc/tty.c @@ -0,0 +1,65 @@ +/* $FreeBSD$ */ +/* $OpenBSD: tty.c,v 1.2 2013/11/12 13:54:51 deraadt Exp $ */ + +/* + * Copyright (c) 2013, Otto Moerbeek <otto@drijf.net> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <errno.h> +#include <signal.h> +#include <histedit.h> +#include <termios.h> +#include "extern.h" + +struct termios ttysaved, ttyedit; + +static int +settty(struct termios *t) +{ + int ret; + + while ((ret = tcsetattr(0, TCSADRAIN, t) == -1) && errno == EINTR) + continue; + return ret; +} + +int +gettty(struct termios *t) +{ + int ret; + + while ((ret = tcgetattr(0, t) == -1) && errno == EINTR) + continue; + return ret; +} + +/* ARGSUSED */ +void +tstpcont(int sig) +{ + int save_errno = errno; + + if (sig == SIGTSTP) { + signal(SIGCONT, tstpcont); + gettty(&ttyedit); + settty(&ttysaved); + } else { + signal(SIGTSTP, tstpcont); + settty(&ttyedit); + } + signal(sig, SIG_DFL); + kill(0, sig); + errno = save_errno; +} |