116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) International Business Machines Corp., 2001
|
|
*
|
|
* Basic error test for msgrcv(2).
|
|
*
|
|
* 1)msgrcv(2) fails and sets errno to E2BIG if the message text length is
|
|
* greater than msgsz and MSG_NOERROR isn't specified in msgflg.
|
|
*
|
|
* 2)The calling process does not have read permission on the message
|
|
* queue, so msgrcv(2) fails and sets errno to EACCES.
|
|
*
|
|
* 3)msgrcv(2) fails and sets errno to EFAULT if the message buffer address
|
|
* isn't accessible.
|
|
*
|
|
* 4)msgrcv(2) fails and sets errno to EINVAL if msqid was invalid(<0).
|
|
*
|
|
* 5)msgrcv(2) fails and sets errno to EINVAL if msgsize is less than 0.
|
|
*
|
|
* 6)msgrcv(2) fails and sets errno to ENOMSG if IPC_NOWAIT was specified in
|
|
* msgflg and no message of the requested type existed on the message queue.
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/msg.h>
|
|
#include <stdlib.h>
|
|
#include <pwd.h>
|
|
#include "tst_test.h"
|
|
#include "tst_safe_sysv_ipc.h"
|
|
#include "libnewipc.h"
|
|
|
|
static key_t msgkey;
|
|
static int queue_id = -1;
|
|
static int bad_id = -1;
|
|
struct passwd *pw;
|
|
|
|
static struct buf {
|
|
long type;
|
|
char mtext[MSGSIZE];
|
|
} rcv_buf, snd_buf = {MSGTYPE, "hello"};
|
|
|
|
static struct tcase {
|
|
int *id;
|
|
struct buf *buffer;
|
|
int msgsz;
|
|
long msgtyp;
|
|
int msgflag;
|
|
int exp_user;
|
|
int exp_err;
|
|
} tcases[] = {
|
|
{&queue_id, &rcv_buf, 4, 1, 0, 0, E2BIG},
|
|
{&queue_id, &rcv_buf, MSGSIZE, 1, 0, 1, EACCES},
|
|
{&queue_id, NULL, MSGSIZE, 1, 0, 0, EFAULT},
|
|
{&bad_id, &rcv_buf, MSGSIZE, 1, 0, 0, EINVAL},
|
|
{&queue_id, &rcv_buf, -1, 1, 0, 0, EINVAL},
|
|
{&queue_id, &rcv_buf, MSGSIZE, 2, IPC_NOWAIT, 0, ENOMSG},
|
|
};
|
|
|
|
static void verify_msgrcv(struct tcase *tc)
|
|
{
|
|
TEST(msgrcv(*tc->id, tc->buffer, tc->msgsz, tc->msgtyp, tc->msgflag));
|
|
if (TST_RET != -1) {
|
|
tst_res(TFAIL, "smgrcv() succeeded unexpectedly");
|
|
return;
|
|
}
|
|
|
|
if (TST_ERR == tc->exp_err) {
|
|
tst_res(TPASS | TTERRNO, "msgrcv() failed as expected");
|
|
} else {
|
|
tst_res(TFAIL | TTERRNO, "msgrcv() failed unexpectedly,"
|
|
" expected %s but got", tst_strerrno(tc->exp_err));
|
|
}
|
|
}
|
|
|
|
static void do_test(unsigned int n)
|
|
{
|
|
struct tcase *tc = &tcases[n];
|
|
pid_t pid;
|
|
|
|
queue_id = SAFE_MSGGET(msgkey, IPC_CREAT | IPC_EXCL | MSG_RW);
|
|
|
|
SAFE_MSGSND(queue_id, &snd_buf, MSGSIZE, 0);
|
|
pid = SAFE_FORK();
|
|
if (pid == 0) {
|
|
if (tc->exp_user)
|
|
SAFE_SETUID(pw->pw_uid);
|
|
verify_msgrcv(tc);
|
|
exit(0);
|
|
}
|
|
tst_reap_children();
|
|
SAFE_MSGCTL(queue_id, IPC_RMID, NULL);
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
msgkey = GETIPCKEY();
|
|
pw = SAFE_GETPWNAM("nobody");
|
|
}
|
|
|
|
static void cleanup(void)
|
|
{
|
|
if (queue_id != -1)
|
|
SAFE_MSGCTL(queue_id, IPC_RMID, NULL);
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.needs_tmpdir = 1,
|
|
.needs_root = 1,
|
|
.forks_child = 1,
|
|
.tcnt = ARRAY_SIZE(tcases),
|
|
.setup = setup,
|
|
.cleanup = cleanup,
|
|
.test = do_test
|
|
};
|