149 lines
3.6 KiB
C
149 lines
3.6 KiB
C
/*
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* Copyright (c) International Business Machines Corp., 2009
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* Copyright (c) Nadia Derbey, 2009
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* This program 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; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* the GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Author: Nadia Derbey <Nadia.Derbey@bull.net>
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*
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* Check mqns isolation: father mqns cannot be accessed from newinstance
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*
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* Mount mqueue fs
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* Create a posix mq -->mq1
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* unshare
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* In unshared process:
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* Mount newinstance mqueuefs
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* Check that mq1 is not readable from new ns
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***************************************************************************/
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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#include <sys/wait.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "mqns.h"
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#include "mqns_helper.h"
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char *TCID = "posixmq_namespace_01";
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int TST_TOTAL = 1;
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int p1[2];
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int p2[2];
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int check_mqueue(void *vtest)
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{
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char buf[30];
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mqd_t mqd;
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(void) vtest;
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close(p1[1]);
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close(p2[0]);
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if (read(p1[0], buf, strlen("go") + 1) < 0) {
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printf("read(p1[0], ...) failed: %s\n", strerror(errno));
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exit(1);
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}
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mqd = ltp_syscall(__NR_mq_open, NOSLASH_MQ1, O_RDONLY);
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if (mqd == -1) {
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if (write(p2[1], "notfnd", strlen("notfnd") + 1) < 0) {
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perror("write(p2[1], ...) failed");
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exit(1);
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}
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} else {
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if (write(p2[1], "exists", strlen("exists") + 1) < 0) {
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perror("write(p2[1], \"exists\", 7) failed");
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exit(1);
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} else if (mq_close(mqd) < 0) {
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perror("mq_close(mqd) failed");
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exit(1);
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}
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}
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exit(0);
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}
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static void setup(void)
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{
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tst_require_root();
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check_mqns();
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}
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int main(int argc, char *argv[])
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{
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int r;
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mqd_t mqd;
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char buf[30];
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int use_clone = T_UNSHARE;
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setup();
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if (argc == 2 && strcmp(argv[1], "-clone") == 0) {
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tst_resm(TINFO,
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"Testing posix mq namespaces through clone(2).");
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use_clone = T_CLONE;
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} else
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tst_resm(TINFO,
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"Testing posix mq namespaces through unshare(2).");
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if (pipe(p1) == -1 || pipe(p2) == -1) {
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tst_brkm(TBROK | TERRNO, NULL, "pipe failed");
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}
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mqd = ltp_syscall(__NR_mq_open, NOSLASH_MQ1, O_RDWR | O_CREAT | O_EXCL,
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0777, NULL);
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if (mqd == -1) {
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perror("mq_open");
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tst_brkm(TFAIL, NULL, "mq_open failed");
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}
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tst_resm(TINFO, "Checking namespaces isolation from parent to child");
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/* fire off the test */
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r = do_clone_unshare_test(use_clone, CLONE_NEWIPC, check_mqueue, NULL);
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if (r < 0) {
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tst_resm(TFAIL, "failed clone/unshare");
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mq_close(mqd);
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ltp_syscall(__NR_mq_unlink, NOSLASH_MQ1);
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tst_exit();
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}
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close(p1[0]);
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close(p2[1]);
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if (write(p1[1], "go", strlen("go") + 1) < 0)
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tst_resm(TBROK | TERRNO, "write(p1[1], \"go\", ...) failed");
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else if (read(p2[0], buf, 7) < 0)
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tst_resm(TBROK | TERRNO, "read(p2[0], buf, ...) failed");
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else {
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if (!strcmp(buf, "exists")) {
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tst_resm(TFAIL, "child process found mqueue");
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} else if (!strcmp(buf, "notfnd")) {
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tst_resm(TPASS, "child process didn't find mqueue");
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} else {
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tst_resm(TFAIL, "UNKNOWN RESULT");
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}
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}
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/* destroy the mqueue */
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if (mq_close(mqd) == -1) {
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tst_brkm(TBROK | TERRNO, NULL, "mq_close failed");
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}
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ltp_syscall(__NR_mq_unlink, NOSLASH_MQ1);
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tst_exit();
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}
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