You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
331 lines
8.2 KiB
331 lines
8.2 KiB
/*
|
|
* Copyright (c) Bull S.A.S. 2008
|
|
* 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
|
|
*
|
|
***************************************************************************
|
|
* File: pidns31.c
|
|
*
|
|
* Description:
|
|
* This testcase checks if the si_pid is correctly set when a process
|
|
* that has registered for notification on a posix mqueue is in an
|
|
* ancestor namespace wrt the process that sends a message to that posix
|
|
* mqueue.
|
|
*
|
|
* Test Assertion & Strategy:
|
|
* Parent Child
|
|
* --------------------------------------------------------------------------
|
|
* Create a POSIX mqueue.
|
|
* Create a PID namespace container.
|
|
* Register for notification when a
|
|
* message arrives in that mqueue
|
|
* Install a handler for SIGUSR1.
|
|
* Open that mqueue for writing
|
|
* Write something to the mqueue.
|
|
* Inside the handler, check that
|
|
* si_pid is set to the child's pid
|
|
*
|
|
* Usage: <for command-line>
|
|
* pidns31
|
|
*
|
|
* History:
|
|
* DATE NAME DESCRIPTION
|
|
* 04/12/08 Nadia Derbey Creation of this test.
|
|
* <Nadia.Derbey@bull.net>
|
|
*
|
|
******************************************************************************/
|
|
#ifndef _GNU_SOURCE
|
|
#define _GNU_SOURCE
|
|
#endif
|
|
#include <sys/wait.h>
|
|
#include <sys/types.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <mqueue.h>
|
|
#include "lapi/syscalls.h"
|
|
#include "pidns_helper.h"
|
|
#include "test.h"
|
|
|
|
char *TCID = "pidns31";
|
|
int TST_TOTAL = 1;
|
|
|
|
char *mqname = "mq1";
|
|
int result = TFAIL;
|
|
|
|
int father_to_child[2];
|
|
|
|
#define CHILD_PID 1
|
|
#define PARENT_PID 0
|
|
|
|
#define MSG "HOW ARE YOU"
|
|
#define MSG_PRIO 1
|
|
|
|
#define NO_STEP -1
|
|
#define F_STEP_0 0x00
|
|
#define F_STEP_1 0x01
|
|
#define F_STEP_2 0x02
|
|
#define F_STEP_3 0x03
|
|
#define C_STEP_0 0x10
|
|
#define C_STEP_1 0x11
|
|
|
|
struct notify_info {
|
|
mqd_t mqd;
|
|
pid_t pid;
|
|
};
|
|
|
|
static void remove_pipe(int *fd)
|
|
{
|
|
close(fd[0]);
|
|
close(fd[1]);
|
|
}
|
|
|
|
static void remove_mqueue(mqd_t mqd)
|
|
{
|
|
mq_close(mqd);
|
|
ltp_syscall(__NR_mq_unlink, mqname);
|
|
}
|
|
|
|
/*
|
|
* steps F_STEP_XX : called from main
|
|
* steps C_STEP_XX : called from child_fn
|
|
*/
|
|
static void cleanup_resources(int step, mqd_t mqd)
|
|
{
|
|
switch (step) {
|
|
case C_STEP_1:
|
|
close(father_to_child[0]);
|
|
/* fall through */
|
|
case C_STEP_0:
|
|
mq_close(mqd);
|
|
break;
|
|
|
|
case F_STEP_3:
|
|
remove_mqueue(mqd);
|
|
close(father_to_child[1]);
|
|
break;
|
|
|
|
case F_STEP_2:
|
|
ltp_syscall(__NR_mq_notify, mqd, NULL);
|
|
/* fall through */
|
|
case F_STEP_1:
|
|
remove_mqueue(mqd);
|
|
/* fall through */
|
|
case F_STEP_0:
|
|
remove_pipe(father_to_child);
|
|
break;
|
|
default:
|
|
tst_resm(TWARN, "Unknown code - no resource removed.");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* cleanup_mqueue() - performs all ONE TIME cleanup for this test at
|
|
* completion or premature exit.
|
|
* step == -1 means no local resource to remove.
|
|
*/
|
|
void cleanup_mqueue(int result, int step, mqd_t mqd)
|
|
{
|
|
if (step != NO_STEP)
|
|
cleanup_resources(step, mqd);
|
|
|
|
tst_exit();
|
|
}
|
|
|
|
/*
|
|
* child_fn() - Inside container
|
|
*/
|
|
int child_fn(void *arg)
|
|
{
|
|
pid_t pid, ppid;
|
|
mqd_t mqd;
|
|
char buf[5];
|
|
|
|
/* Set process id and parent pid */
|
|
pid = getpid();
|
|
ppid = getppid();
|
|
|
|
if (pid != CHILD_PID || ppid != PARENT_PID) {
|
|
tst_resm(TBROK, "cinit: pidns is not created");
|
|
cleanup_mqueue(TBROK, NO_STEP, 0);
|
|
}
|
|
|
|
/* Close the appropriate end of pipe */
|
|
close(father_to_child[1]);
|
|
|
|
/* Is parent ready to receive a message? */
|
|
read(father_to_child[0], buf, 5);
|
|
if (strcmp(buf, "f:ok")) {
|
|
tst_resm(TBROK, "cinit: parent did not send the message!");
|
|
cleanup_mqueue(TBROK, NO_STEP, 0);
|
|
}
|
|
tst_resm(TINFO, "cinit: my father is ready to receive a message");
|
|
|
|
mqd = ltp_syscall(__NR_mq_open, mqname, O_WRONLY, 0, NULL);
|
|
if (mqd == (mqd_t) - 1) {
|
|
tst_resm(TBROK, "cinit: mq_open() failed (%s)",
|
|
strerror(errno));
|
|
cleanup_mqueue(TBROK, NO_STEP, 0);
|
|
}
|
|
tst_resm(TINFO, "cinit: mq_open succeeded");
|
|
|
|
if (mq_send(mqd, MSG, strlen(MSG), MSG_PRIO) == (mqd_t) - 1) {
|
|
tst_resm(TBROK, "cinit: mq_send() failed (%s)",
|
|
strerror(errno));
|
|
cleanup_mqueue(TBROK, C_STEP_0, mqd);
|
|
}
|
|
tst_resm(TINFO, "cinit: mq_send() succeeded");
|
|
|
|
/* Cleanup and exit */
|
|
cleanup_resources(C_STEP_1, mqd);
|
|
exit(0);
|
|
}
|
|
|
|
/*
|
|
* father_signal_handler()
|
|
*/
|
|
static void father_signal_handler(int sig, siginfo_t * si, void *unused)
|
|
{
|
|
char buf[256];
|
|
struct mq_attr attr;
|
|
struct notify_info *info;
|
|
|
|
if (si->si_signo != SIGUSR1) {
|
|
tst_resm(TBROK, "father: received %s unexpectedly",
|
|
strsignal(si->si_signo));
|
|
return;
|
|
}
|
|
|
|
if (si->si_code != SI_MESGQ) {
|
|
tst_resm(TBROK, "father: expected signal code SI_MESGQ - "
|
|
"Got %d", si->si_code);
|
|
return;
|
|
}
|
|
|
|
if (!si->si_ptr) {
|
|
tst_resm(TBROK, "father: expected si_ptr - Got NULL");
|
|
return;
|
|
}
|
|
|
|
info = (struct notify_info *)si->si_ptr;
|
|
|
|
if (si->si_pid != info->pid) {
|
|
tst_resm(TFAIL,
|
|
"father: expected signal originator PID = %d - Got %d",
|
|
info->pid, si->si_pid);
|
|
return;
|
|
}
|
|
|
|
tst_resm(TPASS, "father: signal originator PID = %d", si->si_pid);
|
|
result = TPASS;
|
|
|
|
/*
|
|
* Now read the message - Be silent on errors since this is not the
|
|
* test purpose.
|
|
*/
|
|
if (!mq_getattr(info->mqd, &attr))
|
|
mq_receive(info->mqd, buf, attr.mq_msgsize, NULL);
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
tst_require_root();
|
|
check_newpid();
|
|
}
|
|
|
|
/***********************************************************************
|
|
* M A I N
|
|
***********************************************************************/
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
pid_t cpid;
|
|
mqd_t mqd;
|
|
struct sigevent notif;
|
|
struct sigaction sa;
|
|
int status;
|
|
struct notify_info info;
|
|
|
|
setup();
|
|
|
|
if (pipe(father_to_child) == -1) {
|
|
tst_resm(TBROK, "parent: pipe() failed. aborting!");
|
|
cleanup_mqueue(TBROK, NO_STEP, 0);
|
|
}
|
|
|
|
ltp_syscall(__NR_mq_unlink, mqname);
|
|
mqd =
|
|
ltp_syscall(__NR_mq_open, mqname, O_RDWR | O_CREAT | O_EXCL, 0777,
|
|
NULL);
|
|
if (mqd == (mqd_t) - 1) {
|
|
tst_resm(TBROK, "parent: mq_open() failed (%s)",
|
|
strerror(errno));
|
|
cleanup_mqueue(TBROK, F_STEP_0, 0);
|
|
}
|
|
tst_resm(TINFO, "parent: successfully created posix mqueue");
|
|
|
|
/* container creation on PID namespace */
|
|
cpid = ltp_clone_quick(CLONE_NEWPID | SIGCHLD, child_fn, NULL);
|
|
if (cpid < 0) {
|
|
tst_resm(TBROK, "parent: clone() failed(%s)", strerror(errno));
|
|
cleanup_mqueue(TBROK, F_STEP_1, mqd);
|
|
}
|
|
tst_resm(TINFO, "parent: successfully created child (pid = %d)", cpid);
|
|
|
|
/* Register for notification on message arrival */
|
|
notif.sigev_notify = SIGEV_SIGNAL;
|
|
notif.sigev_signo = SIGUSR1;
|
|
info.mqd = mqd;
|
|
info.pid = cpid;
|
|
notif.sigev_value.sival_ptr = &info;
|
|
if (ltp_syscall(__NR_mq_notify, mqd, ¬if) == (mqd_t) -1) {
|
|
tst_resm(TBROK, "parent: mq_notify() failed (%s)",
|
|
strerror(errno));
|
|
cleanup_mqueue(TBROK, F_STEP_1, mqd);
|
|
}
|
|
tst_resm(TINFO, "parent: successfully registered for notification");
|
|
|
|
/* Define handler for SIGUSR1 */
|
|
sa.sa_flags = SA_SIGINFO;
|
|
sigemptyset(&sa.sa_mask);
|
|
sa.sa_sigaction = father_signal_handler;
|
|
if (sigaction(SIGUSR1, &sa, NULL) == -1) {
|
|
tst_resm(TBROK, "parent: sigaction() failed(%s)",
|
|
strerror(errno));
|
|
cleanup_mqueue(TBROK, F_STEP_2, mqd);
|
|
}
|
|
tst_resm(TINFO, "parent: successfully registered handler for SIGUSR1");
|
|
|
|
/* Close the appropriate end of pipe */
|
|
close(father_to_child[0]);
|
|
|
|
/* Tell the child a message can be sent */
|
|
if (write(father_to_child[1], "f:ok", 5) != 5) {
|
|
tst_resm(TBROK, "parent: pipe is broken(%s)", strerror(errno));
|
|
cleanup_mqueue(TBROK, F_STEP_2, mqd);
|
|
}
|
|
|
|
sleep(3);
|
|
|
|
/* Wait for child to finish */
|
|
if (wait(&status) == -1) {
|
|
tst_resm(TBROK, "parent: wait() failed(%s)", strerror(errno));
|
|
cleanup_mqueue(TBROK, F_STEP_1, mqd);
|
|
}
|
|
|
|
cleanup_mqueue(result, F_STEP_3, mqd);
|
|
|
|
tst_exit();
|
|
}
|