122 lines
2.5 KiB
C
122 lines
2.5 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2009
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* Veerendra C <vechandr@in.ibm.com>
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* Copyright (C) 2022 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
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*/
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/*\
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* [Description]
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*
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* Test SysV IPC message passing through different namespaces.
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*
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* [Algorithm]
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*
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* In parent process create a new mesgq with a specific key.
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* In cloned process try to access the created mesgq.
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*
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* Test will PASS if the mesgq is readable when flag is None.
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* Test will FAIL if the mesgq is readable when flag is Unshare or Clone or
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* the message received is wrong.
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*/
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#define _GNU_SOURCE
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#include <sys/wait.h>
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#include <sys/msg.h>
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#include <sys/types.h>
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#include "tst_safe_sysv_ipc.h"
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#include "tst_test.h"
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#include "common.h"
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#define KEY_VAL 154326L
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#define MSG_TYPE 5
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#define MSG_TEXT "My message!"
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static char *str_op;
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static int use_clone;
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static int ipc_id = -1;
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struct msg_buf {
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long mtype;
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char mtext[80];
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};
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static int check_mesgq(LTP_ATTRIBUTE_UNUSED void *vtest)
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{
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int id, n;
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struct msg_buf msg = {};
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id = msgget(KEY_VAL, 0);
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if (id < 0) {
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if (use_clone == T_NONE)
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tst_res(TFAIL, "Plain cloned process didn't find mesgq");
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else
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tst_res(TPASS, "%s: container didn't find mesgq", str_op);
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return 0;
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}
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if (use_clone == T_NONE) {
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tst_res(TPASS, "Plain cloned process found mesgq inside container");
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n = SAFE_MSGRCV(id, &msg, sizeof(msg.mtext), MSG_TYPE, 0);
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tst_res(TINFO, "Mesg read of %d bytes, Type %ld, Msg: %s", n, msg.mtype, msg.mtext);
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if (strcmp(msg.mtext, MSG_TEXT))
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tst_res(TFAIL, "Received the wrong text message");
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return 0;
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}
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tst_res(TFAIL, "%s: container init process found mesgq", str_op);
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return 0;
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}
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static void run(void)
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{
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struct msg_buf msg = {
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.mtype = MSG_TYPE,
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.mtext = MSG_TEXT,
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};
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if (use_clone == T_NONE)
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SAFE_MSGSND(ipc_id, &msg, strlen(msg.mtext), 0);
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tst_res(TINFO, "mesgq namespaces test: %s", str_op);
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clone_unshare_test(use_clone, CLONE_NEWIPC, check_mesgq, NULL);
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}
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static void setup(void)
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{
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use_clone = get_clone_unshare_enum(str_op);
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if (use_clone != T_NONE)
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check_newipc();
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ipc_id = SAFE_MSGGET(KEY_VAL, IPC_CREAT | IPC_EXCL | 0600);
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}
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static void cleanup(void)
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{
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if (ipc_id != -1) {
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tst_res(TINFO, "Destroying message queue");
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SAFE_MSGCTL(ipc_id, IPC_RMID, NULL);
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}
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}
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static struct tst_test test = {
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.test_all = run,
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.setup = setup,
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.cleanup = cleanup,
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.needs_root = 1,
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.forks_child = 1,
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.options = (struct tst_option[]) {
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{ "m:", &str_op, "Test execution mode <clone|unshare|none>" },
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{},
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},
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};
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