1 #include <u.h>
2 #include <libc.h>
3
4 int
postnote(int group,int pid,char * note)5 postnote(int group, int pid, char *note)
6 {
7 char file[128];
8 int f, r;
9
10 switch(group) {
11 case PNPROC:
12 snprint(file, sizeof file, "/proc/%d/note", pid);
13 break;
14 case PNGROUP:
15 snprint(file, sizeof file, "/proc/%d/notepg", pid);
16 break;
17 default:
18 return -1;
19 }
20
21 f = open(file, OWRITE);
22 if(f < 0)
23 return -1;
24
25 r = strlen(note);
26 if(write(f, note, r) != r) {
27 close(f);
28 return -1;
29 }
30 close(f);
31 return 0;
32 }
33