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-rw-r--r--testcases/kernel/containers/mqns/mqns_02.c248
1 files changed, 91 insertions, 157 deletions
diff --git a/testcases/kernel/containers/mqns/mqns_02.c b/testcases/kernel/containers/mqns/mqns_02.c
index d4e785b59..4348be7fc 100644
--- a/testcases/kernel/containers/mqns/mqns_02.c
+++ b/testcases/kernel/containers/mqns/mqns_02.c
@@ -1,180 +1,114 @@
+// SPDX-License-Identifier: GPL-2.0
/*
-* 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: child mqns cannot be accessed from father
-*
-* Mount mqueue fs
-* unshare
-* In unshared process:
-* Mount newinstance mqueuefs
-* Create a posix mq -->mq1
-* Check that mq1 is not readable from father
-*
-* Changelog:
-* Dec 16: accomodate new mqns semantics (Serge Hallyn)
-
-***************************************************************************/
-
-#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_02";
-int TST_TOTAL = 1;
-
-int p1[2];
-int p2[2];
-
-int check_mqueue(void *vtest)
-{
- char buf[30];
- mqd_t mqd;
+ * Copyright (c) International Business Machines Corp., 2009
+ * Copyright (c) Nadia Derbey, 2009 <Nadia.Derbey@bull.net>
+ * Copyright (C) 2023 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
- (void) vtest;
+/*\
+ * [Description]
+ *
+ * Create a mqueue with the same name in both parent and isolated/forked child,
+ * then check namespace isolation.
+ */
- close(p1[1]);
- close(p2[0]);
+#include "tst_test.h"
+#include "lapi/sched.h"
+#include "tst_safe_posix_ipc.h"
- if (read(p1[0], buf, 3) < 0) {
- perror("read(p1[0], ..) failed");
- exit(1);
- } else {
+#define MQNAME "/MQ1"
- mqd =
- tst_syscall(__NR_mq_open, NOSLASH_MQ1,
- O_RDWR | O_CREAT | O_EXCL, 0777, NULL);
- if (mqd == -1) {
- if (write(p2[1], "mqfail", strlen("mqfail") + 1) < 0) {
- perror("write(p2[1], \"mqfail\", ..) failed");
- exit(1);
- }
- } else {
-
- if (write(p2[1], "mqopen", strlen("mqopen") + 1) < 0) {
- perror("write(p2[1], \"mqopen\", ..) failed");
- exit(1);
- } else {
-
- if (read(p1[0], buf, 5) < 0) {
- perror("read(p1[0], ..) failed");
- exit(1);
- } else {
-
- /* destroy the mqueue */
- if (mq_close(mqd) < 0) {
- perror("mq_close(mqd) failed");
- exit(1);
- } else if (tst_syscall(__NR_mq_unlink,
- NOSLASH_MQ1) < 0) {
- perror("mq_unlink(" NOSLASH_MQ1
- ") failed");
- exit(1);
- } else if (write(p2[1], "done",
- strlen("done") + 1)
- < 0) {
- perror("write(p2[1], "
- "\"done\", ..) failed");
- exit(1);
- }
-
- }
-
- }
+static mqd_t mqd;
+static char *str_op;
- }
+static int create_message_queue(void)
+{
+ return mq_open(MQNAME, O_RDWR | O_CREAT | O_EXCL, 0777, NULL);
+}
- }
- exit(0);
+static void shared_child(void)
+{
+ mqd_t mqd1 = -1;
+ TST_EXP_FAIL(mqd1 = create_message_queue(), EEXIST);
+
+ if (mqd1 != -1) {
+ SAFE_MQ_CLOSE(mqd1);
+ SAFE_MQ_UNLINK(MQNAME);
+ }
}
-static void setup(void)
+static void isolated_child(void)
{
- tst_require_root();
- check_mqns();
+ mqd_t mqd1 = -1;
+
+ TST_EXP_POSITIVE(mqd1 = create_message_queue());
+
+ if (mqd1 != -1) {
+ SAFE_MQ_CLOSE(mqd1);
+ SAFE_MQ_UNLINK(MQNAME);
+ }
}
-int main(int argc, char *argv[])
+static void run(void)
{
- 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");
- }
+ const struct tst_clone_args clone_args = {
+ .flags = CLONE_NEWIPC,
+ .exit_signal = SIGCHLD,
+ };
- /* fire off the test */
- r = do_clone_unshare_test(use_clone, CLONE_NEWIPC, check_mqueue, NULL);
- if (r < 0) {
- tst_brkm(TFAIL, NULL, "failed clone/unshare");
- }
+ tst_res(TINFO, "Checking namespaces isolation from parent to child");
- tst_resm(TINFO, "Checking namespaces isolation (child to parent)");
+ if (str_op && !strcmp(str_op, "clone")) {
+ tst_res(TINFO, "Spawning isolated process");
- close(p1[0]);
- close(p2[1]);
- if (write(p1[1], "go", strlen("go") + 1) < 0) {
- tst_brkm(TBROK, NULL, "write(p1[1], \"go\", ..) failed");
- }
+ if (!SAFE_CLONE(&clone_args)) {
+ isolated_child();
+ return;
+ }
+ } else if (str_op && !strcmp(str_op, "unshare")) {
+ tst_res(TINFO, "Spawning unshared process");
- if (read(p2[0], buf, 7) < 0) {
- tst_resm(TBROK | TERRNO, "read(p2[0], ..) failed");
- } else if (!strcmp(buf, "mqfail")) {
- tst_resm(TFAIL, "child process could not create mqueue");
- umount(DEV_MQUEUE);
- } else if (strcmp(buf, "mqopen")) {
- tst_resm(TFAIL, "child process could not create mqueue");
- umount(DEV_MQUEUE);
- } else {
- mqd = tst_syscall(__NR_mq_open, NOSLASH_MQ1, O_RDONLY);
- if (mqd == -1) {
- tst_resm(TPASS,
- "Parent process can't see the mqueue");
- } else {
- tst_resm(TFAIL | TERRNO,
- "Parent process found mqueue");
- mq_close(mqd);
+ if (!SAFE_FORK()) {
+ SAFE_UNSHARE(CLONE_NEWIPC);
+ isolated_child();
+ return;
}
- if (write(p1[1], "cont", 5) < 0) {
- tst_resm(TBROK | TERRNO, "write(p1[1], ..) failed");
+ } else {
+ tst_res(TINFO, "Spawning plain process");
+
+ if (!SAFE_FORK()) {
+ shared_child();
+ return;
}
- read(p2[0], buf, 7);
}
+}
- tst_exit();
+static void setup(void)
+{
+ mqd = SAFE_MQ_OPEN(MQNAME, O_RDWR | O_CREAT | O_EXCL, 0777, NULL);
}
+
+static void cleanup(void)
+{
+ if (mqd != -1) {
+ SAFE_MQ_CLOSE(mqd);
+ SAFE_MQ_UNLINK(MQNAME);
+ }
+}
+
+static struct tst_test test = {
+ .test_all = run,
+ .setup = setup,
+ .cleanup = cleanup,
+ .needs_root = 1,
+ .forks_child = 1,
+ .options = (struct tst_option[]) {
+ { "m:", &str_op, "Child process isolation <clone|unshare>" },
+ {},
+ },
+ .needs_kconfigs = (const char *[]) {
+ "CONFIG_USER_NS",
+ NULL
+ },
+};
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