1 #include <u.h>
2 #include <libc.h>
3 
4 int chattyfuse;
5 
6 int
7 post9pservice(int fd, char *name, char *mtpt)
8 {
9 	int i, pid;
10 	char *ns, *addr;
11 	Waitmsg *w;
12 
13 	if(name == nil && mtpt == nil){
14 		close(fd);
15 		werrstr("nothing to do");
16 		return -1;
17 	}
18 
19 	if(name){
20 		if(strchr(name, '!'))	/* assume is already network address */
21 			addr = strdup(name);
22 		else{
23 			if((ns = getns()) == nil)
24 				return -1;
25 			addr = smprint("unix!%s/%s", ns, name);
26 			free(ns);
27 		}
28 		if(addr == nil)
29 			return -1;
30 		switch(pid = fork()){
31 		case -1:
32 			return -1;
33 		case 0:
34 			dup(fd, 0);
35 			dup(fd, 1);
36 			for(i=3; i<20; i++)
37 				close(i);
38 			execlp("9pserve", "9pserve", "-u", addr, (char*)0);
39 			fprint(2, "exec 9pserve: %r\n");
40 			_exits("exec");
41 		}
42 		close(fd);
43 		w = waitfor(pid);
44 		if(w == nil)
45 			return -1;
46 		if(w->msg && w->msg[0]){
47 			free(w);
48 			werrstr("9pserve failed");
49 			return -1;
50 		}
51 		free(w);
52 		if(mtpt){
53 			/* reopen */
54 			if((fd = dial(addr, nil, nil, nil)) < 0){
55 				werrstr("cannot reopen for mount: %r");
56 				return -1;
57 			}
58 		}
59 		free(addr);
60 	}
61 	if(mtpt){
62 		switch(pid = rfork(RFFDG|RFPROC|RFNOWAIT)){
63 		case -1:
64 			return -1;
65 		case 0:
66 			dup(fd, 0);
67 			for(i=3; i<20; i++)
68 				close(i);
69 
70 			/* Try v9fs on Linux, which will mount 9P directly. */
71 			execlp("mount9p", "mount9p", "-", mtpt, (char*)0);
72 
73 			if(chattyfuse)
74 				execlp("9pfuse", "9pfuse", "-D", "-", mtpt, (char*)0);
75 			else
76 				execlp("9pfuse", "9pfuse", "-", mtpt, (char*)0);
77 			fprint(2, "exec 9pfuse: %r\n");
78 			_exits("exec");
79 		}
80 		close(fd);
81 	}
82 	return 0;
83 }