jehanne/qa/kern/getppid.c

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/*
* This file is part of Jehanne.
*
* Copyright (C) 2016 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 <lib9.h>
void
main(void)
{
int ppid;
Waitmsg *w;
rfork(RFNAMEG);
if(rfork(RFPROC) == 0){
ppid = getmainpid(); // this comes from exec() syscall
if(getppid() != ppid){
print("FAIL: getppid() != getmainpid()\n");
exits("FAIL");
}
rfork(RFNOMNT);
if(getppid() != ppid){
print("FAIL: rfork(RFNOMNT); getppid() != getmainpid()\n");
exits("FAIL");
}
rfork(RFNOMNT|RFCNAMEG);
if(getppid() != ppid){
print("FAIL: rfork(RFNOMNT|RFCNAMEG)); getppid() != getmainpid()\n");
exits("FAIL");
}
exits(nil);
} else {
w = wait();
if(w->msg[0]){
exits("FAIL");
}
print("PASS\n");
exits("PASS");
}
}