1 8ad51794 2004-03-25 devnull #include <u.h>
 2 4dcd9af2 2004-04-15 devnull #include <signal.h>
 3 b4a659b6 2004-04-19 devnull #include <libc.h>
 4 8ad51794 2004-03-25 devnull #include "term.h"
 5 8ad51794 2004-03-25 devnull 
 6 c6687d45 2004-09-21 devnull static void
 7 60535a5f 2004-12-26 devnull sys(char *buf, int devnull)
 8 c6687d45 2004-09-21 devnull {
 9 c6687d45 2004-09-21 devnull 	char buf2[100];
10 c6687d45 2004-09-21 devnull 	char *f[20];
11 c6687d45 2004-09-21 devnull 	int nf, pid;
12 c6687d45 2004-09-21 devnull 
13 60535a5f 2004-12-26 devnull 	notedisable("sys: child");
14 c6687d45 2004-09-21 devnull 	strcpy(buf2, buf);
15 c6687d45 2004-09-21 devnull 	nf = tokenize(buf2, f, nelem(f));
16 c6687d45 2004-09-21 devnull 	f[nf] = nil;
17 c6687d45 2004-09-21 devnull 	switch(pid = fork()){
18 c6687d45 2004-09-21 devnull 	case 0:
19 60535a5f 2004-12-26 devnull 		close(1);
20 60535a5f 2004-12-26 devnull 		open("/dev/null", OREAD);
21 60535a5f 2004-12-26 devnull 		close(2);
22 60535a5f 2004-12-26 devnull 		open("/dev/null", OREAD);
23 c6687d45 2004-09-21 devnull 		execvp(f[0], f);
24 60535a5f 2004-12-26 devnull 		_exit(2);
25 c6687d45 2004-09-21 devnull 	default:
26 c6687d45 2004-09-21 devnull 		waitpid();
27 c6687d45 2004-09-21 devnull 	}
28 c6687d45 2004-09-21 devnull }
29 c6687d45 2004-09-21 devnull 
30 8ad51794 2004-03-25 devnull int
31 4dcd9af2 2004-04-15 devnull rcstart(int argc, char **argv, int *pfd, int *tfd)
32 8ad51794 2004-03-25 devnull {
33 a2705f20 2004-04-16 devnull 	int fd[2], i, pid;
34 8ad51794 2004-03-25 devnull 	char *xargv[3];
35 8ad51794 2004-03-25 devnull 	char slave[256];
36 8ad51794 2004-03-25 devnull 	int sfd;
37 8ad51794 2004-03-25 devnull 
38 8ad51794 2004-03-25 devnull 	if(argc == 0){
39 8ad51794 2004-03-25 devnull 		argc = 2;
40 8ad51794 2004-03-25 devnull 		argv = xargv;
41 8ad51794 2004-03-25 devnull 		argv[0] = getenv("SHELL");
42 8ad51794 2004-03-25 devnull 		if(argv[0] == 0)
43 8ad51794 2004-03-25 devnull 			argv[0] = "rc";
44 8ad51794 2004-03-25 devnull 		argv[1] = "-i";
45 8ad51794 2004-03-25 devnull 		argv[2] = 0;
46 8ad51794 2004-03-25 devnull 	}
47 8ad51794 2004-03-25 devnull 	/*
48 8ad51794 2004-03-25 devnull 	 * fd0 is slave (tty), fd1 is master (pty)
49 8ad51794 2004-03-25 devnull 	 */
50 8ad51794 2004-03-25 devnull 	fd[0] = fd[1] = -1;
51 60535a5f 2004-12-26 devnull 	if(getpts(fd, slave) < 0){
52 60535a5f 2004-12-26 devnull 		exit(3);
53 75024f0f 2004-03-26 devnull 		sysfatal("getpts: %r\n");
54 60535a5f 2004-12-26 devnull 	}
55 60535a5f 2004-12-26 devnull 	notedisable("sys: window size change");
56 60535a5f 2004-12-26 devnull 	pid = fork();
57 60535a5f 2004-12-26 devnull 	switch(pid){
58 8ad51794 2004-03-25 devnull 	case 0:
59 8ad51794 2004-03-25 devnull 		putenv("TERM", "9term");
60 8ad51794 2004-03-25 devnull 		sfd = childpty(fd, slave);
61 8ad51794 2004-03-25 devnull 		dup(sfd, 0);
62 8ad51794 2004-03-25 devnull 		dup(sfd, 1);
63 8ad51794 2004-03-25 devnull 		dup(sfd, 2);
64 60535a5f 2004-12-26 devnull 		sys("stty tabs -onlcr icanon echo erase '^h' intr '^?'", 0);
65 60535a5f 2004-12-26 devnull 		sys("stty onocr", 1);	/* not available on mac */
66 b4a659b6 2004-04-19 devnull 		if(noecho)
67 60535a5f 2004-12-26 devnull 			sys("stty -echo", 0);
68 a2705f20 2004-04-16 devnull 		for(i=3; i<100; i++)
69 a2705f20 2004-04-16 devnull 			close(i);
70 c6687d45 2004-09-21 devnull 		signal(SIGINT, SIG_DFL);
71 c6687d45 2004-09-21 devnull 		signal(SIGHUP, SIG_DFL);
72 c6687d45 2004-09-21 devnull 		signal(SIGTERM, SIG_DFL);
73 8ad51794 2004-03-25 devnull 		execvp(argv[0], argv);
74 8ad51794 2004-03-25 devnull 		fprint(2, "exec %s failed: %r\n", argv[0]);
75 60535a5f 2004-12-26 devnull 		_exit(2);
76 8ad51794 2004-03-25 devnull 		break;
77 8ad51794 2004-03-25 devnull 	case -1:
78 8ad51794 2004-03-25 devnull 		sysfatal("proc failed: %r");
79 8ad51794 2004-03-25 devnull 		break;
80 8ad51794 2004-03-25 devnull 	}
81 8ad51794 2004-03-25 devnull 	*pfd = fd[1];
82 a2705f20 2004-04-16 devnull 	close(fd[0]);
83 a2705f20 2004-04-16 devnull 	if(tfd){
84 a2705f20 2004-04-16 devnull 		if((*tfd = open(slave, OREAD)) < 0)
85 a2705f20 2004-04-16 devnull 			sysfatal("parent open %s: %r", slave);
86 a2705f20 2004-04-16 devnull 	}
87 8ad51794 2004-03-25 devnull 	return pid;
88 8ad51794 2004-03-25 devnull }
89 8ad51794 2004-03-25 devnull