1 175b8a53 2004-04-21 devnull #include <u.h>
 2 175b8a53 2004-04-21 devnull #include <libc.h>
 3 175b8a53 2004-04-21 devnull #include "9proc.h"
 4 175b8a53 2004-04-21 devnull #undef rfork
 5 fd04aace 2003-11-23 devnull 
 6 fd04aace 2003-11-23 devnull int
 7 fd04aace 2003-11-23 devnull p9rfork(int flags)
 8 fd04aace 2003-11-23 devnull {
 9 1c8efa18 2003-12-04 devnull 	int pid;
10 1c8efa18 2003-12-04 devnull 
11 1c8efa18 2003-12-04 devnull 	if((flags&(RFPROC|RFFDG|RFMEM)) == (RFPROC|RFFDG)){
12 1c8efa18 2003-12-04 devnull 		/* check other flags before we commit */
13 1c8efa18 2003-12-04 devnull 		flags &= ~(RFPROC|RFFDG);
14 32f69c36 2003-12-11 devnull 		if(flags & ~(RFNOTEG|RFNAMEG)){
15 1c8efa18 2003-12-04 devnull 			werrstr("unknown flags %08ux in rfork", flags);
16 1c8efa18 2003-12-04 devnull 			return -1;
17 1c8efa18 2003-12-04 devnull 		}
18 1c8efa18 2003-12-04 devnull 		pid = fork();
19 175b8a53 2004-04-21 devnull 		_p9uproc(0);
20 1c8efa18 2003-12-04 devnull 		if(pid != 0)
21 1c8efa18 2003-12-04 devnull 			return pid;
22 1c8efa18 2003-12-04 devnull 	}
23 fd04aace 2003-11-23 devnull 	if(flags&RFPROC){
24 32f69c36 2003-12-11 devnull 		werrstr("cannot use rfork for shared memory -- use ffork");
25 fd04aace 2003-11-23 devnull 		return -1;
26 fd04aace 2003-11-23 devnull 	}
27 32f69c36 2003-12-11 devnull 	if(flags&RFNAMEG){
28 32f69c36 2003-12-11 devnull 		/* XXX set $NAMESPACE to a new directory */
29 32f69c36 2003-12-11 devnull 		flags &= ~RFNAMEG;
30 32f69c36 2003-12-11 devnull 	}
31 fd04aace 2003-11-23 devnull 	if(flags&RFNOTEG){
32 1c253ceb 2003-11-23 devnull 		setpgid(0, getpid());
33 fd04aace 2003-11-23 devnull 		flags &= ~RFNOTEG;
34 fd04aace 2003-11-23 devnull 	}
35 fd04aace 2003-11-23 devnull 	if(flags){
36 fd04aace 2003-11-23 devnull 		werrstr("unknown flags %08ux in rfork", flags);
37 fd04aace 2003-11-23 devnull 		return -1;
38 fd04aace 2003-11-23 devnull 	}
39 fd04aace 2003-11-23 devnull 	return 0;
40 fd04aace 2003-11-23 devnull }