t9term manages to turn off echo at the right times under SunOS ? - plan9port - [fork] Plan 9 from user space
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---
DIR commit 4dcd9af228643d37bb63ab1642c5128b3b30f4bd
DIR parent aeb54c0efed03187235820c73b7feef2260951cf
HTML Author: rsc <devnull@localhost>
Date: Thu, 15 Apr 2004 02:04:30 +0000
9term manages to turn off echo at the right times under SunOS ?
Diffstat:
M src/cmd/9term/9term.c | 19 ++++++++++++++++++-
M src/cmd/9term/Darwin.c | 12 ++++++++++++
M src/cmd/9term/FreeBSD.c | 12 ++++++++++++
M src/cmd/9term/Linux.c | 17 +++++++++++++++++
M src/cmd/9term/OpenBSD.c | 13 +++++++++++++
M src/cmd/9term/SunOS.c | 84 +++++++++++++++++++++++++++++--
M src/cmd/9term/rcstart.c | 20 ++++++++++++++++----
M src/cmd/9term/term.h | 4 +++-
M src/cmd/9term/win.c | 2 +-
9 files changed, 173 insertions(+), 10 deletions(-)
---
DIR diff --git a/src/cmd/9term/9term.c b/src/cmd/9term/9term.c
t@@ -124,6 +124,7 @@ int scrolling; /* window scrolls */
int clickmsec; /* time of last click */
uint clickq0; /* point of last click */
int rcfd;
+int sfd; /* slave fd, to get/set terminal mode */
int rcpid;
int maxtab;
int use9wm;
t@@ -223,7 +224,7 @@ threadmain(int argc, char *argv[])
mc = initmouse(nil, screen);
kc = initkeyboard(nil);
- rcpid = rcstart(argc, argv, &rcfd);
+ rcpid = rcstart(argc, argv, &rcfd, &sfd);
hoststart();
plumbstart();
t@@ -270,6 +271,10 @@ hangupnote(void *a, char *msg)
postnote(PNGROUP, rcpid, "hangup");
noted(NDFLT);
}
+ if(strstr(msg, "child")){
+ /* bug: do better */
+ exits(0);
+ }
noted(NDFLT);
}
t@@ -284,6 +289,8 @@ hostproc(void *arg)
i = 0;
for(;;){
/* Let typing have a go -- maybe there's a rubout waiting. */
+ yield();
+
i = 1-i; /* toggle */
n = threadread(rcfd, rcbuf[i].data, sizeof rcbuf[i].data);
if(n <= 0){
t@@ -828,6 +835,7 @@ key(Rune r)
return;
}
+ rawon = israw(sfd);
if(rawon && t.q0==t.nr){
addraw(&r, 1);
consread();
t@@ -837,6 +845,7 @@ key(Rune r)
if(r==ESC || (holdon && r==0x7F)){ /* toggle hold */
holdon = !holdon;
drawhold(holdon);
+ // replaceintegerproperty("_9WM_HOLD_MODE", 1, 32, holdon);
if(!holdon)
consread();
if(r==ESC)
t@@ -918,6 +927,7 @@ consready(void)
if(holdon)
return 0;
+ rawon = israw(sfd);
if(rawon)
return t.nraw != 0;
t@@ -936,6 +946,7 @@ consread(void)
{
char buf[8000], *p;
int c, width, n;
+ int echo;
for(;;) {
if(!consready())
t@@ -954,13 +965,18 @@ consread(void)
c = *p;
p += width;
n -= width;
+ rawon = israw(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);
if(write(rcfd, buf, n) < 0)
exits(0);
+ // setecho(sfd, echo);
/* mallocstats(); */
}
}
t@@ -1242,6 +1258,7 @@ paste(Rune *r, int n, int advance)
{
Rune *rbuf;
+ rawon = israw(sfd);
if(rawon && t.q0==t.nr){
addraw(r, n);
return;
DIR diff --git a/src/cmd/9term/Darwin.c b/src/cmd/9term/Darwin.c
t@@ -133,3 +133,15 @@ myopenpty(int fd[], char *name)
}
+int
+israw(int fd)
+{
+ return 0;
+}
+
+int
+setecho(int fd, int on)
+{
+ return 0;
+}
+
DIR diff --git a/src/cmd/9term/FreeBSD.c b/src/cmd/9term/FreeBSD.c
t@@ -44,3 +44,15 @@ updatewinsize(int row, int col, int dx, int dy)
ows = ws;
}
+int
+israw(int fd)
+{
+ return 0;
+}
+
+int
+setecho(int fd, int on)
+{
+ return 0;
+}
+
DIR diff --git a/src/cmd/9term/Linux.c b/src/cmd/9term/Linux.c
t@@ -44,3 +44,20 @@ updatewinsize(int row, int col, int dx, int dy)
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;
+}
DIR diff --git a/src/cmd/9term/OpenBSD.c b/src/cmd/9term/OpenBSD.c
t@@ -44,3 +44,16 @@ updatewinsize(int row, int col, int dx, int dy)
fprint(2, "ioctl: %r\n");
ows = ws;
}
+
+int
+israw(int fd)
+{
+ return 0;
+}
+
+int
+setecho(int fd, int on)
+{
+ return 0;
+}
+
DIR diff --git a/src/cmd/9term/SunOS.c b/src/cmd/9term/SunOS.c
t@@ -1,6 +1,6 @@
#include <u.h>
#include <termios.h>
-#include <sys/termios.h>
+#include <stropts.h>
#include <libc.h>
#include "term.h"
t@@ -11,8 +11,17 @@ getpts(int fd[], char *slave)
if ((grantpt(fd[1]) < 0) || (unlockpt(fd[1]) < 0))
return -1;
fchmod(fd[1], 0622);
+
strcpy(slave, ptsname(fd[1]));
- fd[0] = open(slave, OREAD);
+
+ fd[0] = open(slave, ORDWR);
+ if(fd[0] < 0)
+ sysfatal("open %s: %r\n", slave);
+
+ /* set up the right streams modules for a tty */
+ ioctl(fd[0], I_PUSH, "ptem"); /* push ptem */
+ ioctl(fd[0], I_PUSH, "ldterm"); /* push ldterm */
+
return 0;
}
t@@ -42,7 +51,76 @@ updatewinsize(int row, int col, int dx, int dy)
ws.ws_ypixel = dy;
if(ws.ws_row != ows.ws_row || ws.ws_col != ows.ws_col)
if(ioctl(rcfd, TIOCSWINSZ, &ws) < 0)
- fprint(2, "ioctl: %r\n");
+ fprint(2, "ioctl TIOCSWINSZ: %r\n");
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 ;
+}
+
+
+int
+setecho(int fd, int on)
+{
+ 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);
+ }
+
+ return oldecho;
+}
+
DIR diff --git a/src/cmd/9term/rcstart.c b/src/cmd/9term/rcstart.c
t@@ -1,11 +1,21 @@
#include <u.h>
#include <libc.h>
+#if 0
+#include <sys/wait.h>
+#endif
+#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)
+rcstart(int argc, char **argv, int *pfd, int *tfd)
{
- int pid;
int fd[2];
char *xargv[3];
char slave[256];
t@@ -27,7 +37,6 @@ rcstart(int argc, char **argv, int *pfd)
if(getpts(fd, slave) < 0)
sysfatal("getpts: %r\n");
-
switch(pid = fork()) {
case 0:
putenv("TERM", "9term");
t@@ -44,8 +53,11 @@ rcstart(int argc, char **argv, int *pfd)
sysfatal("proc failed: %r");
break;
}
- close(fd[0]);
*pfd = fd[1];
+ if(tfd)
+ *tfd = fd[0];
+ else
+ close(fd[0]);
return pid;
}
DIR diff --git a/src/cmd/9term/term.h b/src/cmd/9term/term.h
t@@ -2,4 +2,6 @@ extern int getpts(int[], char*);
extern int childpty(int[], char*);
extern void updatewinsize(int, int, int, int);
extern int rcfd;
-extern int rcstart(int, char*[], int*);
+extern int rcstart(int, char*[], int*, int*);
+extern int israw(int);
+extern int setecho(int, int);
DIR diff --git a/src/cmd/9term/win.c b/src/cmd/9term/win.c
t@@ -161,7 +161,7 @@ threadmain(int argc, char **argv)
cwait = threadwaitchan();
threadcreate(waitthread, nil, STACK);
- pid = rcstart(argc, argv, &rcfd);
+ pid = rcstart(argc, argv, &rcfd, nil);
if(pid == -1)
sysfatal("exec failed");