tmake echoing work. - plan9port - [fork] Plan 9 from user space
(HTM) git clone git://src.adamsgaard.dk/plan9port
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---
(DIR) commit a2705f207ff006c07c72081897ec4a6ca22ef269
(DIR) parent aba09191af8012bc7d6a1b998ac937875f728d0c
(HTM) Author: rsc <devnull@localhost>
Date: Fri, 16 Apr 2004 15:27:29 +0000
make echoing work.
Diffstat:
M src/cmd/9term/9term.c | 26 ++++++++++++++------------
D src/cmd/9term/9term.h | 4 ----
M src/cmd/9term/FreeBSD.c | 2 +-
M src/cmd/9term/Linux.c | 64 +------------------------------
M src/cmd/9term/OpenBSD.c | 2 +-
M src/cmd/9term/SunOS.c | 80 +++++++++----------------------
M src/cmd/9term/mkfile | 2 ++
M src/cmd/9term/rcstart.c | 23 +++++++++--------------
M src/cmd/9term/term.h | 2 +-
9 files changed, 51 insertions(+), 154 deletions(-)
---
(DIR) diff --git a/src/cmd/9term/9term.c b/src/cmd/9term/9term.c
t@@ -835,7 +835,7 @@ key(Rune r)
return;
}
- rawon = israw(sfd);
+ rawon = !isecho(sfd);
if(rawon && t.q0==t.nr){
addraw(&r, 1);
consread();
t@@ -927,7 +927,7 @@ consready(void)
if(holdon)
return 0;
- rawon = israw(sfd);
+ rawon = !isecho(sfd);
if(rawon)
return t.nraw != 0;
t@@ -946,12 +946,11 @@ consread(void)
{
char buf[8000], *p;
int c, width, n;
- int echo;
+ int s;
for(;;) {
if(!consready())
return;
-
n = sizeof(buf);
p = buf;
c = 0;
t@@ -965,19 +964,22 @@ consread(void)
c = *p;
p += width;
n -= width;
- rawon = israw(sfd);
+ rawon = !isecho(sfd);
if(!rawon && (c == '\n' || c == '\004' || c == '\x7F'))
break;
}
- /* take out control-d when not doing a zero length write */
n = p-buf;
- if(0) fprint(2, "write buf\n");
- /* temporarily disable echo for buf. sensitive to race? Axel. */
- // echo = setecho(sfd, 0);
+
+ /*
+ * We've been echoing, so make sure the terminal isn't
+ * while we do the write. This screws up if someone
+ * else tries to turn on echo at the same time (we'll turn it
+ * off again after the write), but that's not too likely.
+ */
+ s = setecho(sfd, 0);
if(write(rcfd, buf, n) < 0)
exits(0);
- // setecho(sfd, echo);
-/* mallocstats(); */
+ setecho(sfd, s);
}
}
t@@ -1258,7 +1260,7 @@ paste(Rune *r, int n, int advance)
{
Rune *rbuf;
- rawon = israw(sfd);
+ rawon = !isecho(sfd);
if(rawon && t.q0==t.nr){
addraw(r, n);
return;
(DIR) diff --git a/src/cmd/9term/9term.h b/src/cmd/9term/9term.h
t@@ -1,4 +0,0 @@
-extern int getpts(int[], char*);
-extern int childpty(int[], char*);
-extern void updatewinsize(int, int, int, int);
-extern int rcfd[];
(DIR) diff --git a/src/cmd/9term/FreeBSD.c b/src/cmd/9term/FreeBSD.c
t@@ -1,10 +1,10 @@
#include <u.h>
-#include "9term.h"
#include <sys/types.h>
#include <termios.h>
#include <sys/termios.h>
#include <libutil.h>
#include <libc.h>
+#include "term.h"
int
getpts(int fd[], char *slave)
(DIR) diff --git a/src/cmd/9term/Linux.c b/src/cmd/9term/Linux.c
t@@ -1,63 +1 @@
-#include <u.h>
-#include <termios.h>
-#include <sys/termios.h>
-#include <pty.h>
-#include <libc.h>
-#include "9term.h"
-
-int
-getpts(int fd[], char *slave)
-{
- openpty(&fd[1], &fd[0], slave, 0, 0);
- return 0;
-}
-
-int
-childpty(int fd[], char *slave)
-{
- int sfd;
-
- close(fd[1]);
- setsid();
- sfd = open(slave, ORDWR);
- if(sfd < 0)
- sysfatal("open %s: %r\n", slave);
- if(ioctl(sfd, TIOCSCTTY, 0) < 0)
- fprint(2, "ioctl TIOCSCTTY: %r\n");
- return sfd;
-}
-
-struct winsize ows;
-
-void
-updatewinsize(int row, int col, int dx, int dy)
-{
- struct winsize ws;
-
- ws.ws_row = row;
- ws.ws_col = col;
- ws.ws_xpixel = dx;
- ws.ws_ypixel = dy;
- if(ws.ws_row != ows.ws_row || ws.ws_col != ows.ws_col)
- if(ioctl(rcfd[0], TIOCSWINSZ, &ws) < 0)
- fprint(2, "ioctl: %r\n");
- ows = ws;
-}
-
-
-int
-israw(int fd)
-{
- return 0;
-/*
- if(tcgetattr(fd, &ttmode) < 0)
- fprint(2, "tcgetattr: %r\n");
- return !(ttmode.c_lflag&(ICANON|ECHO));
-*/
-}
-
-int
-setecho(int fd, int on)
-{
- return 0;
-}
+#include "bsdpty.c"
(DIR) diff --git a/src/cmd/9term/OpenBSD.c b/src/cmd/9term/OpenBSD.c
t@@ -1,11 +1,11 @@
#include <u.h>
-#include "9term.h"
#include <sys/types.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <sys/termios.h>
#include <util.h>
#include <libc.h>
+#include "term.h"
int
getpts(int fd[], char *slave)
(DIR) diff --git a/src/cmd/9term/SunOS.c b/src/cmd/9term/SunOS.c
t@@ -4,6 +4,8 @@
#include <libc.h>
#include "term.h"
+#define debug 0
+
int
getpts(int fd[], char *slave)
{
t@@ -55,72 +57,34 @@ updatewinsize(int row, int col, int dx, int dy)
ows = ws;
}
-/*
- * israw has been inspired by Matty Farrow's 9term.
- * The code below is probably a gross simplification --
- * for the few cases tested it seems to be enough.
- * However, for example, Matty's code also looks at ISIG,
- * whereas, we do not (yet?). Axel.
- *
- *Note: I guess only the get/set terminal mode attribute
- * code needs to be here; the logic around it could be
- * elswhere (9term.c) - but if the code below is split,
- * the question is what a nice interface would be. Axel.
- */
-
static struct termios ttmode;
int
israw(int fd)
{
- int e, c, i;
-
- tcgetattr(fd, &ttmode);
- c = (ttmode.c_lflag & ICANON) ? 1 : 0;
- e = (ttmode.c_lflag & ECHO) ? 1 : 0;
- i = (ttmode.c_lflag & ISIG) ? 1 : 0;
-
- if(0) fprint(2, "israw: icanon=%d echo=%d isig=%d\n", c, e, i);
-
- return !c || !e ;
+ if(tcgetattr(fd, &ttmode) < 0)
+ fprint(2, "tcgetattr: %r\n");
+ if(debug) fprint(2, "israw %c%c\n",
+ ttmode.c_lflag&ICANON ? 'c' : '-',
+ ttmode.c_lflag&ECHO ? 'e' : '-');
+ return !(ttmode.c_lflag&(ICANON|ECHO));
}
-
int
-setecho(int fd, int on)
+setecho(int fd, int newe)
{
- int e, c, i;
- int oldecho;
-
- tcgetattr(fd, &ttmode);
- c = (ttmode.c_lflag & ICANON) ? 1 : 0;
- e = (ttmode.c_lflag & ECHO) ? 1 : 0;
- i = (ttmode.c_lflag & ISIG) ? 1 : 0;
-
- if(0) fprint(2, "setecho(%d) pre: icanon=%d echo=%d isig=%d\n", on, c, e, i);
-
- oldecho = e;
-
- if (oldecho == on)
- return oldecho;
-
- if (on) {
- ttmode.c_lflag |= ECHO;
- tcsetattr(fd, TCSANOW, &ttmode);
- } else {
- ttmode.c_lflag &= ~ECHO;
- tcsetattr(fd, TCSANOW, &ttmode);
- }
-
- if (0){
- tcgetattr(fd, &ttmode);
- c = (ttmode.c_lflag & ICANON) ? 1 : 0;
- e = (ttmode.c_lflag & ECHO) ? 1 : 0;
- i = (ttmode.c_lflag & ISIG) ? 1 : 0;
-
- fprint(2, "setecho(%d) post: icanon=%d echo=%d isig=%d\n", on, c, e, i);
+ int old;
+
+ if(tcgetattr(fd, &ttmode) < 0)
+ fprint(2, "tcgetattr: %r\n");
+ old = (ttmode.c_lflag&ECHO)==ECHO;
+ if(old != newe){
+ if(newe)
+ ttmode.c_lflag |= ECHO;
+ else
+ ttmode.c_lflag &= ~ECHO;
+ if(tcsetattr(fd, TCSANOW, &ttmode) < 0)
+ fprint(2, "tcsetattr: %r\n");
}
-
- return oldecho;
+ return old;
}
-
(DIR) diff --git a/src/cmd/9term/mkfile b/src/cmd/9term/mkfile
t@@ -13,3 +13,5 @@ SHORTLIB=complete frame draw plumb fs mux thread 9
LDFLAGS=-L$X11/lib -lX11
+Linux.$O: bsdpty.c
+
(DIR) diff --git a/src/cmd/9term/rcstart.c b/src/cmd/9term/rcstart.c
t@@ -6,17 +6,10 @@
#include <signal.h>
#include "term.h"
-/*
- * Somehow we no longer automatically exit
- * when the shell exits; hence the SIGCHLD stuff.
- * Something that can be fixed? Axel.
- */
-static int pid;
-
int
rcstart(int argc, char **argv, int *pfd, int *tfd)
{
- int fd[2];
+ int fd[2], i, pid;
char *xargv[3];
char slave[256];
int sfd;
t@@ -36,7 +29,6 @@ rcstart(int argc, char **argv, int *pfd, int *tfd)
fd[0] = fd[1] = -1;
if(getpts(fd, slave) < 0)
sysfatal("getpts: %r\n");
-
switch(pid = fork()) {
case 0:
putenv("TERM", "9term");
t@@ -44,7 +36,9 @@ rcstart(int argc, char **argv, int *pfd, int *tfd)
dup(sfd, 0);
dup(sfd, 1);
dup(sfd, 2);
- system("stty tabs -onlcr -echo erase '^h' intr '^?'");
+ system("stty tabs -onlcr onocr icanon echo erase '^h' intr '^?'");
+ for(i=3; i<100; i++)
+ close(i);
execvp(argv[0], argv);
fprint(2, "exec %s failed: %r\n", argv[0]);
_exits("oops");
t@@ -54,10 +48,11 @@ rcstart(int argc, char **argv, int *pfd, int *tfd)
break;
}
*pfd = fd[1];
- if(tfd)
- *tfd = fd[0];
- else
- close(fd[0]);
+ close(fd[0]);
+ if(tfd){
+ if((*tfd = open(slave, OREAD)) < 0)
+ sysfatal("parent open %s: %r", slave);
+ }
return pid;
}
(DIR) diff --git a/src/cmd/9term/term.h b/src/cmd/9term/term.h
t@@ -3,5 +3,5 @@ extern int childpty(int[], char*);
extern void updatewinsize(int, int, int, int);
extern int rcfd;
extern int rcstart(int, char*[], int*, int*);
-extern int israw(int);
+extern int isecho(int);
extern int setecho(int, int);