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 268d64df 2005-03-15 devnull #include <signal.h>
 5 be22ae2d 2004-03-26 devnull #include <libc.h>
 6 be22ae2d 2004-03-26 devnull #include "term.h"
 7 e642beb5 2003-11-25 devnull 
 8 a2705f20 2004-04-16 devnull #define debug 0
 9 a2705f20 2004-04-16 devnull 
10 e642beb5 2003-11-25 devnull int
11 e642beb5 2003-11-25 devnull getpts(int fd[], char *slave)
12 e642beb5 2003-11-25 devnull {
13 dc305d03 2005-02-08 devnull 	void (*f)(int);
14 dc305d03 2005-02-08 devnull 	int r;
15 dc305d03 2005-02-08 devnull 
16 e642beb5 2003-11-25 devnull 	fd[1] = open("/dev/ptmx", ORDWR);
17 dc305d03 2005-02-08 devnull 	f = signal(SIGCLD, SIG_DFL);
18 dc305d03 2005-02-08 devnull 	r = grantpt(fd[1]);
19 dc305d03 2005-02-08 devnull 	signal(SIGCLD, f);
20 dc305d03 2005-02-08 devnull 	if(r < 0 || unlockpt(fd[1]) < 0)
21 e642beb5 2003-11-25 devnull 		return -1;
22 e642beb5 2003-11-25 devnull 	fchmod(fd[1], 0622);
23 4dcd9af2 2004-04-15 devnull 
24 e642beb5 2003-11-25 devnull 	strcpy(slave, ptsname(fd[1]));
25 4dcd9af2 2004-04-15 devnull 
26 4dcd9af2 2004-04-15 devnull 	fd[0] = open(slave, ORDWR);
27 4dcd9af2 2004-04-15 devnull 	if(fd[0] < 0)
28 4dcd9af2 2004-04-15 devnull 		sysfatal("open %s: %r\n", slave);
29 4dcd9af2 2004-04-15 devnull 
30 4dcd9af2 2004-04-15 devnull 	/* set up the right streams modules for a tty */
31 4dcd9af2 2004-04-15 devnull 	ioctl(fd[0], I_PUSH, "ptem");        /* push ptem */
32 4dcd9af2 2004-04-15 devnull 	ioctl(fd[0], I_PUSH, "ldterm");      /* push ldterm */
33 4dcd9af2 2004-04-15 devnull 
34 e642beb5 2003-11-25 devnull 	return 0;
35 e642beb5 2003-11-25 devnull }
36 8ad51794 2004-03-25 devnull 
37 be22ae2d 2004-03-26 devnull int
38 be22ae2d 2004-03-26 devnull childpty(int fd[], char *slave)
39 be22ae2d 2004-03-26 devnull {
40 be22ae2d 2004-03-26 devnull 	int sfd;
41 be22ae2d 2004-03-26 devnull 
42 be22ae2d 2004-03-26 devnull 	close(fd[1]);
43 be22ae2d 2004-03-26 devnull 	setsid();
44 be22ae2d 2004-03-26 devnull 	sfd = open(slave, ORDWR);
45 be22ae2d 2004-03-26 devnull 	if(sfd < 0)
46 be22ae2d 2004-03-26 devnull 		sysfatal("open %s: %r\n", slave);
47 be22ae2d 2004-03-26 devnull 	return sfd;
48 be22ae2d 2004-03-26 devnull }
49 be22ae2d 2004-03-26 devnull 
50 8ad51794 2004-03-25 devnull struct winsize ows;
51 8ad51794 2004-03-25 devnull 
52 8ad51794 2004-03-25 devnull void
53 8ad51794 2004-03-25 devnull updatewinsize(int row, int col, int dx, int dy)
54 8ad51794 2004-03-25 devnull {
55 8ad51794 2004-03-25 devnull 	struct winsize ws;
56 8ad51794 2004-03-25 devnull 
57 8ad51794 2004-03-25 devnull 	ws.ws_row = row;
58 8ad51794 2004-03-25 devnull 	ws.ws_col = col;
59 8ad51794 2004-03-25 devnull 	ws.ws_xpixel = dx;
60 8ad51794 2004-03-25 devnull 	ws.ws_ypixel = dy;
61 8ad51794 2004-03-25 devnull 	if(ws.ws_row != ows.ws_row || ws.ws_col != ows.ws_col)
62 be22ae2d 2004-03-26 devnull 	if(ioctl(rcfd, TIOCSWINSZ, &ws) < 0)
63 4dcd9af2 2004-04-15 devnull 		fprint(2, "ioctl TIOCSWINSZ: %r\n");
64 8ad51794 2004-03-25 devnull 	ows = ws;
65 8ad51794 2004-03-25 devnull }
66 8ad51794 2004-03-25 devnull 
67 4dcd9af2 2004-04-15 devnull static struct termios ttmode;
68 4dcd9af2 2004-04-15 devnull 
69 4dcd9af2 2004-04-15 devnull int
70 a0f1e21f 2004-04-20 devnull isecho(int fd)
71 4dcd9af2 2004-04-15 devnull {
72 a2705f20 2004-04-16 devnull 	if(tcgetattr(fd, &ttmode) < 0)
73 a2705f20 2004-04-16 devnull 		fprint(2, "tcgetattr: %r\n");
74 a2705f20 2004-04-16 devnull 	if(debug) fprint(2, "israw %c%c\n",
75 a2705f20 2004-04-16 devnull 		ttmode.c_lflag&ICANON ? 'c' : '-',
76 a2705f20 2004-04-16 devnull 		ttmode.c_lflag&ECHO ? 'e' : '-');
77 30968c3f 2005-01-04 devnull 	return (ttmode.c_lflag&ICANON && ttmode.c_lflag&ECHO);
78 4dcd9af2 2004-04-15 devnull }
79 4dcd9af2 2004-04-15 devnull 
80 4dcd9af2 2004-04-15 devnull int
81 38897b20 2005-08-11 devnull getintr(int fd)
82 38897b20 2005-08-11 devnull {
83 92c5d29e 2005-09-21 devnull 	if(tcgetattr(fd, &ttmode) < 0)
84 38897b20 2005-08-11 devnull 		return 0x7F;
85 38897b20 2005-08-11 devnull 	return ttmode.c_cc[VINTR];
86 38897b20 2005-08-11 devnull }