Not always is desirable to create a pseudo terminal, and some times
we want to open a terminal emulator over a tty line. With this new
patch is possible to do someting like:
$ stty raw </dev/ttyS0
$ stty -iexten </dev/ttyS0
$ stty 115200 </dev/ttyS0
$ st -l /dev/ttyS0
Without this option was needed to launch another terminal emulator
over st (for example minicom, picocom, cu, ...).
---
st.1 | 5 +++++
st.c | 35 ++++++++++++++++++++++++-----------
2 files changed, 29 insertions(+), 11 deletions(-)
diff --git a/st.1 b/st.1
index a9fec15..97984b3 100644
--- a/st.1
+++ b/st.1
@@ -15,6 +15,8 @@ st \- simple terminal
.IR file ]
.RB [ \-t
.IR title ]
+.RB [ \-l
+.IR line ]
.RB [ \-w
.IR windowid ]
.RB [ \-v ]
@@ -58,6 +60,9 @@ defines the window title (default 'st').
embeds st within the window identified by
.I windowid
.TP
+.BI \-l " line"
+use a tty line instead of a pseudo terminal.
+.TP
.B \-v
prints version information to stderr, then exits.
.TP
diff --git a/st.c b/st.c
index 2a565b6..2a44983 100644
--- a/st.c
+++ b/st.c
@@ -508,6 +508,7 @@ static char *opt_title = NULL;
static char *opt_embed = NULL;
static char *opt_class = NULL;
static char *opt_font = NULL;
+static char *opt_line = NULL;
static int oldbutton = 3; /* button event on startup: 3 = release */
static char *usedfont = NULL;
@@ -1253,6 +1254,23 @@ ttynew(void) {
int m, s;
struct winsize w = {term.row, term.col, 0, 0};
+ if(opt_io) {
+ term.mode |= MODE_PRINT;
+ iofd = (!strcmp(opt_io, "-")) ?
+ STDOUT_FILENO :
+ open(opt_io, O_WRONLY | O_CREAT, 0666);
+ if(iofd < 0) {
+ fprintf(stderr, "Error opening %s:%s\n",
+ opt_io, strerror(errno));
+ }
+ }
+
+ if (opt_line) {
+ if ((cmdfd = open(opt_line, O_RDWR)) < 0)
+ die("open line failed: %s\n", strerror(errno));
+ return;
+ }
+
/* seems to work fine on linux, openbsd and freebsd */
if(openpty(&m, &s, NULL, NULL, &w) < 0)
die("openpty failed: %s\n", strerror(errno));
@@ -1268,6 +1286,7 @@ ttynew(void) {
dup2(s, STDERR_FILENO);
if(ioctl(s, TIOCSCTTY, NULL) < 0)
die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
+ close(iofd);
close(s);
close(m);
execsh();
@@ -1276,16 +1295,6 @@ ttynew(void) {
close(s);
cmdfd = m;
signal(SIGCHLD, sigchld);
- if(opt_io) {
- term.mode |= MODE_PRINT;
- iofd = (!strcmp(opt_io, "-")) ?
- STDOUT_FILENO :
- open(opt_io, O_WRONLY | O_CREAT, 0666);
- if(iofd < 0) {
- fprintf(stderr, "Error opening %s:%s\n",
- opt_io, strerror(errno));
- }
- }
break;
}
}
@@ -4003,7 +4012,8 @@ void
usage(void) {
die("%s " VERSION " (c) 2010-2015 st engineers\n" \
"usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
- " [-i] [-t title] [-w windowid] [-e command ...]\n", argv0);
+ " [-i] [-l line] [-t title] [-w windowid] [-e command ...]\n",
+ argv0);
}
int
@@ -4042,6 +4052,9 @@ main(int argc, char *argv[]) {
case 'o':
opt_io = EARGF(usage());
break;
+ case 'l':
+ opt_line = EARGF(usage());
+ break;
case 't':
opt_title = EARGF(usage());
break;
--
2.1.4
