93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
/*
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* This file is part of Jehanne.
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*
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* Copyright (C) 2017 Giacomo Tesio <giacomo@tesio.it>
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*
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* Jehanne is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* Jehanne is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <u.h>
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#include <lib9.h>
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int sync[2];
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void
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setup_ns(void)
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{
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int fd;
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if(bind("#|", "/", MREPL) < 0){
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print("FAIL: rfork\n");
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write(sync[0], "FAIL", 5);
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return;
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}
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fd = open("/data", OWRITE);
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if(fd < 0){
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print("FAIL: open(/data)\n");
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write(sync[0], "FAIL", 5);
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return;
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}
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write(fd, "hi!", 4);
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close(fd);
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write(sync[0], "DONE", 5);
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sleep(10);
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}
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void
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main(void)
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{
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int child, fd;
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char buf[64];
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rfork(RFNOTEG|RFNAMEG);
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pipe(sync);
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switch(child = rfork(RFPROC|RFCNAMEG|RFNOWAIT)){
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case -1:
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print("FAIL: rfork\n");
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exits("FAIL");
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case 0:
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setup_ns();
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exits(nil);
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default:
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break;
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}
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read(sync[1], buf, sizeof(buf));
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if(strcmp("DONE", buf) != 0)
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exits("FAIL");
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snprint(buf, sizeof(buf), "/proc/%d/ns", child);
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fd = open(buf, OWRITE);
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if(fd < 0){
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print("FAIL: open(%s)\n", buf);
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exits("FAIL");
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}
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write(fd, "clone", 6);
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close(fd);
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memset(buf, 0, sizeof(buf));
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fd = open("/data1", OREAD);
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if(fd < 0){
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print("FAIL: open(/data1)\n");
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exits("FAIL");
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}
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read(fd, buf, sizeof(buf));
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close(fd);
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if(strcmp("hi!", buf) == 0){
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print("PASS: read '%s' from /data1\n", buf);
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exits("PASS");
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}
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print("FAIL: unexpected string from %d: %s\n", child, buf);
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exits("FAIL");
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}
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