83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
/*
|
|
* This file is part of Jehanne.
|
|
*
|
|
* Copyright (C) 2015 Giacomo Tesio <giacomo@tesio.it>
|
|
*
|
|
* Jehanne is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, version 2 of the License.
|
|
*
|
|
* Jehanne is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <u.h>
|
|
#include <libc.h>
|
|
|
|
static int
|
|
openprocnotes(int pid)
|
|
{
|
|
char file[128];
|
|
int32_t f;
|
|
|
|
jehanne_sprint(file, "#p/%d/note", pid);
|
|
f = sys_open(file, OWRITE);
|
|
if(f < 0){
|
|
jehanne_sprint(file, "/proc/%d/note", pid);
|
|
f = sys_open(file, OWRITE);
|
|
}
|
|
if(f < 0)
|
|
jehanne_werrstr("postnote: cannot open neither #p/%d/note nor /proc/%d/note", pid, pid);
|
|
return f;
|
|
}
|
|
|
|
static int
|
|
opengroupnotes(int pid)
|
|
{
|
|
char file[128];
|
|
int32_t f;
|
|
|
|
jehanne_sprint(file, "#p/%d/notepg", pid);
|
|
f = sys_open(file, OWRITE);
|
|
if(f < 0){
|
|
jehanne_sprint(file, "/proc/%d/notepg", pid);
|
|
f = sys_open(file, OWRITE);
|
|
}
|
|
if(f < 0)
|
|
jehanne_werrstr("postnote: cannot open neither #p/%d/notepg nor /proc/%d/notepg", pid, pid);
|
|
return f;
|
|
}
|
|
|
|
int
|
|
jehanne_postnote(int group, int pid, const char *note)
|
|
{
|
|
int f, r;
|
|
|
|
switch(group) {
|
|
case PNPROC:
|
|
f = openprocnotes(pid);
|
|
break;
|
|
case PNGROUP:
|
|
f = opengroupnotes(pid);
|
|
break;
|
|
default:
|
|
jehanne_werrstr("postnote: invalid group flag %d", group);
|
|
return -1;
|
|
}
|
|
if(f < 0)
|
|
return f;
|
|
|
|
r = jehanne_strlen(note);
|
|
if(jehanne_write(f, note, r) != r) {
|
|
sys_close(f);
|
|
return -1;
|
|
}
|
|
sys_close(f);
|
|
return 0;
|
|
}
|