jehanne/qa/kern/getmainpid.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)
{
int32_t pid, mainpid;
Waitmsg *w;
switch(fork()){
case 0:
mainpid = getmainpid();
pid = getppid();
if(mainpid != pid){
print("FAIL: getmainpid() = %d, getppid() = %d\n", mainpid, pid);
exits("FAIL");
}
exits(nil);
break;
default:
mainpid = getmainpid();
pid = getpid();
if(mainpid != pid){
print("FAIL: getmainpid() = %d, getpid() = %d\n", mainpid, pid);
exits("FAIL");
}
w = wait();
if(w->msg[0])
exits("FAIL");
break;
}
print("PASS\n");
exits("PASS");
}