1 fd04aace 2003-11-23 devnull #include <u.h>
 2 f9355efb 2003-11-24 devnull #define NOPLAN9DEFINES
 3 fd04aace 2003-11-23 devnull #include <libc.h>
 4 fd04aace 2003-11-23 devnull 
 5 d2c4ee9e 2003-11-24 devnull #include <signal.h>
 6 fd04aace 2003-11-23 devnull 
 7 d2c4ee9e 2003-11-24 devnull 
 8 fd04aace 2003-11-23 devnull extern int _p9strsig(char*);
 9 fd04aace 2003-11-23 devnull 
10 fd04aace 2003-11-23 devnull int
11 fd04aace 2003-11-23 devnull postnote(int who, int pid, char *msg)
12 fd04aace 2003-11-23 devnull {
13 fd04aace 2003-11-23 devnull 	int sig;
14 fd04aace 2003-11-23 devnull 
15 fd04aace 2003-11-23 devnull 	sig = _p9strsig(msg);
16 fd04aace 2003-11-23 devnull 	if(sig == 0){
17 fd04aace 2003-11-23 devnull 		werrstr("unknown note");
18 fd04aace 2003-11-23 devnull 		return -1;
19 fd04aace 2003-11-23 devnull 	}
20 fd04aace 2003-11-23 devnull 
21 0cc1faf0 2021-01-14 rsc 	if(pid <= 0){
22 0cc1faf0 2021-01-14 rsc 		werrstr("bad pid in postnote");
23 0cc1faf0 2021-01-14 rsc 		return -1;
24 0cc1faf0 2021-01-14 rsc 	}
25 0cc1faf0 2021-01-14 rsc 
26 fd04aace 2003-11-23 devnull 	switch(who){
27 fd04aace 2003-11-23 devnull 	default:
28 fd04aace 2003-11-23 devnull 		werrstr("bad who in postnote");
29 fd04aace 2003-11-23 devnull 		return -1;
30 fd04aace 2003-11-23 devnull 	case PNPROC:
31 fd04aace 2003-11-23 devnull 		return kill(pid, sig);
32 fd04aace 2003-11-23 devnull 	case PNGROUP:
33 fd04aace 2003-11-23 devnull 		if((pid = getpgid(pid)) < 0)
34 fd04aace 2003-11-23 devnull 			return -1;
35 fd04aace 2003-11-23 devnull 		return killpg(pid, sig);
36 fd04aace 2003-11-23 devnull 	}
37 fd04aace 2003-11-23 devnull }