1 fd04aace 2003-11-23 devnull #define NOPLAN9DEFINES
 2 fd04aace 2003-11-23 devnull #include <lib9.h>
 3 fd04aace 2003-11-23 devnull 
 4 fd04aace 2003-11-23 devnull int
 5 fd04aace 2003-11-23 devnull p9rfork(int flags)
 6 fd04aace 2003-11-23 devnull {
 7 1c8efa18 2003-12-04 devnull 	int pid;
 8 1c8efa18 2003-12-04 devnull 
 9 1c8efa18 2003-12-04 devnull 	if((flags&(RFPROC|RFFDG|RFMEM)) == (RFPROC|RFFDG)){
10 1c8efa18 2003-12-04 devnull 		/* check other flags before we commit */
11 1c8efa18 2003-12-04 devnull 		flags &= ~(RFPROC|RFFDG);
12 32f69c36 2003-12-11 devnull 		if(flags & ~(RFNOTEG|RFNAMEG)){
13 1c8efa18 2003-12-04 devnull 			werrstr("unknown flags %08ux in rfork", flags);
14 1c8efa18 2003-12-04 devnull 			return -1;
15 1c8efa18 2003-12-04 devnull 		}
16 1c8efa18 2003-12-04 devnull 		pid = fork();
17 1c8efa18 2003-12-04 devnull 		if(pid != 0)
18 1c8efa18 2003-12-04 devnull 			return pid;
19 1c8efa18 2003-12-04 devnull 	}
20 fd04aace 2003-11-23 devnull 	if(flags&RFPROC){
21 32f69c36 2003-12-11 devnull 		werrstr("cannot use rfork for shared memory -- use ffork");
22 fd04aace 2003-11-23 devnull 		return -1;
23 fd04aace 2003-11-23 devnull 	}
24 32f69c36 2003-12-11 devnull 	if(flags&RFNAMEG){
25 32f69c36 2003-12-11 devnull 		/* XXX set $NAMESPACE to a new directory */
26 32f69c36 2003-12-11 devnull 		flags &= ~RFNAMEG;
27 32f69c36 2003-12-11 devnull 	}
28 fd04aace 2003-11-23 devnull 	if(flags&RFNOTEG){
29 1c253ceb 2003-11-23 devnull 		setpgid(0, getpid());
30 fd04aace 2003-11-23 devnull 		flags &= ~RFNOTEG;
31 fd04aace 2003-11-23 devnull 	}
32 fd04aace 2003-11-23 devnull 	if(flags){
33 fd04aace 2003-11-23 devnull 		werrstr("unknown flags %08ux in rfork", flags);
34 fd04aace 2003-11-23 devnull 		return -1;
35 fd04aace 2003-11-23 devnull 	}
36 fd04aace 2003-11-23 devnull 	return 0;
37 fd04aace 2003-11-23 devnull }