jehanne/qa/kern/stop_start.c

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/*
* This file is part of Jehanne.
*
* Copyright (C) 2017 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(int argc, char**argv)
{
int fd, n;
char *path;
path = smprint("/proc/%d/ctl", getpid());
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fd = sys_open(path, OWRITE);
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if(fd < 0){
print("FAIL: open");
exits("FAIL");
}
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n = jehanne_write(fd, "stop", 4);
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if(n < 0){
print("FAIL: write");
exits("FAIL");
}
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sys_close(fd);
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print("PASS\n");
exits("PASS");
}