1 be22ae2d 2004-03-26 devnull #include <u.h>
 2 8ad51794 2004-03-25 devnull #include <termios.h>
 3 4dcd9af2 2004-04-15 devnull #include <stropts.h>
 4 be22ae2d 2004-03-26 devnull #include <libc.h>
 5 be22ae2d 2004-03-26 devnull #include "term.h"
 6 e642beb5 2003-11-25 devnull 
 7 a2705f20 2004-04-16 devnull #define debug 0
 8 a2705f20 2004-04-16 devnull 
 9 e642beb5 2003-11-25 devnull int
10 e642beb5 2003-11-25 devnull getpts(int fd[], char *slave)
11 e642beb5 2003-11-25 devnull {
12 dc305d03 2005-02-08 devnull 	void (*f)(int);
13 dc305d03 2005-02-08 devnull 	int r;
14 dc305d03 2005-02-08 devnull 
15 e642beb5 2003-11-25 devnull 	fd[1] = open("/dev/ptmx", ORDWR);
16 dc305d03 2005-02-08 devnull 	f = signal(SIGCLD, SIG_DFL);
17 dc305d03 2005-02-08 devnull 	r = grantpt(fd[1]);
18 dc305d03 2005-02-08 devnull 	signal(SIGCLD, f);
19 dc305d03 2005-02-08 devnull 	if(r < 0 || unlockpt(fd[1]) < 0)
20 e642beb5 2003-11-25 devnull 		return -1;
21 e642beb5 2003-11-25 devnull 	fchmod(fd[1], 0622);
22 4dcd9af2 2004-04-15 devnull 
23 e642beb5 2003-11-25 devnull 	strcpy(slave, ptsname(fd[1]));
24 4dcd9af2 2004-04-15 devnull 
25 4dcd9af2 2004-04-15 devnull 	fd[0] = open(slave, ORDWR);
26 4dcd9af2 2004-04-15 devnull 	if(fd[0] < 0)
27 4dcd9af2 2004-04-15 devnull 		sysfatal("open %s: %r\n", slave);
28 4dcd9af2 2004-04-15 devnull 
29 4dcd9af2 2004-04-15 devnull 	/* set up the right streams modules for a tty */
30 4dcd9af2 2004-04-15 devnull 	ioctl(fd[0], I_PUSH, "ptem");        /* push ptem */
31 4dcd9af2 2004-04-15 devnull 	ioctl(fd[0], I_PUSH, "ldterm");      /* push ldterm */
32 4dcd9af2 2004-04-15 devnull 
33 e642beb5 2003-11-25 devnull 	return 0;
34 e642beb5 2003-11-25 devnull }
35 8ad51794 2004-03-25 devnull 
36 be22ae2d 2004-03-26 devnull int
37 be22ae2d 2004-03-26 devnull childpty(int fd[], char *slave)
38 be22ae2d 2004-03-26 devnull {
39 be22ae2d 2004-03-26 devnull 	int sfd;
40 be22ae2d 2004-03-26 devnull 
41 be22ae2d 2004-03-26 devnull 	close(fd[1]);
42 be22ae2d 2004-03-26 devnull 	setsid();
43 be22ae2d 2004-03-26 devnull 	sfd = open(slave, ORDWR);
44 be22ae2d 2004-03-26 devnull 	if(sfd < 0)
45 be22ae2d 2004-03-26 devnull 		sysfatal("open %s: %r\n", slave);
46 be22ae2d 2004-03-26 devnull 	return sfd;
47 be22ae2d 2004-03-26 devnull }
48 be22ae2d 2004-03-26 devnull 
49 8ad51794 2004-03-25 devnull struct winsize ows;
50 8ad51794 2004-03-25 devnull 
51 8ad51794 2004-03-25 devnull void
52 8ad51794 2004-03-25 devnull updatewinsize(int row, int col, int dx, int dy)
53 8ad51794 2004-03-25 devnull {
54 8ad51794 2004-03-25 devnull 	struct winsize ws;
55 8ad51794 2004-03-25 devnull 
56 8ad51794 2004-03-25 devnull 	ws.ws_row = row;
57 8ad51794 2004-03-25 devnull 	ws.ws_col = col;
58 8ad51794 2004-03-25 devnull 	ws.ws_xpixel = dx;
59 8ad51794 2004-03-25 devnull 	ws.ws_ypixel = dy;
60 8ad51794 2004-03-25 devnull 	if(ws.ws_row != ows.ws_row || ws.ws_col != ows.ws_col)
61 be22ae2d 2004-03-26 devnull 	if(ioctl(rcfd, TIOCSWINSZ, &ws) < 0)
62 4dcd9af2 2004-04-15 devnull 		fprint(2, "ioctl TIOCSWINSZ: %r\n");
63 8ad51794 2004-03-25 devnull 	ows = ws;
64 8ad51794 2004-03-25 devnull }
65 8ad51794 2004-03-25 devnull 
66 4dcd9af2 2004-04-15 devnull static struct termios ttmode;
67 4dcd9af2 2004-04-15 devnull 
68 4dcd9af2 2004-04-15 devnull int
69 a0f1e21f 2004-04-20 devnull isecho(int fd)
70 4dcd9af2 2004-04-15 devnull {
71 a2705f20 2004-04-16 devnull 	if(tcgetattr(fd, &ttmode) < 0)
72 a2705f20 2004-04-16 devnull 		fprint(2, "tcgetattr: %r\n");
73 a2705f20 2004-04-16 devnull 	if(debug) fprint(2, "israw %c%c\n",
74 a2705f20 2004-04-16 devnull 		ttmode.c_lflag&ICANON ? 'c' : '-',
75 a2705f20 2004-04-16 devnull 		ttmode.c_lflag&ECHO ? 'e' : '-');
76 30968c3f 2005-01-04 devnull 	return (ttmode.c_lflag&ICANON && ttmode.c_lflag&ECHO);
77 4dcd9af2 2004-04-15 devnull }
78 4dcd9af2 2004-04-15 devnull 
79 4dcd9af2 2004-04-15 devnull int
80 a2705f20 2004-04-16 devnull setecho(int fd, int newe)
81 4dcd9af2 2004-04-15 devnull {
82 a2705f20 2004-04-16 devnull 	int old;
83 4dcd9af2 2004-04-15 devnull 
84 a2705f20 2004-04-16 devnull 	if(tcgetattr(fd, &ttmode) < 0)
85 a2705f20 2004-04-16 devnull 		fprint(2, "tcgetattr: %r\n");
86 a2705f20 2004-04-16 devnull 	old = (ttmode.c_lflag&ECHO)==ECHO;
87 a2705f20 2004-04-16 devnull 	if(old != newe){
88 a2705f20 2004-04-16 devnull 		if(newe)
89 a2705f20 2004-04-16 devnull 			ttmode.c_lflag |= ECHO;
90 a2705f20 2004-04-16 devnull 		else
91 a2705f20 2004-04-16 devnull 			ttmode.c_lflag &= ~ECHO;
92 a2705f20 2004-04-16 devnull 		if(tcsetattr(fd, TCSANOW, &ttmode) < 0)
93 a2705f20 2004-04-16 devnull 			fprint(2, "tcsetattr: %r\n");
94 4dcd9af2 2004-04-15 devnull 	}
95 a2705f20 2004-04-16 devnull 	return old;
96 4dcd9af2 2004-04-15 devnull }