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