119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
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/*
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* Copyright (c) 2015 Author: Gabriellla Schmidt <gsc@bruker.de>
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* Modify: Li Wang <liwang@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* you should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* Description:
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*
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* A regression test for:
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* commit e7ca2552369c1dfe0216c626baf82c3d83ec36bb
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* Author: Mateusz Guzik <mguzik@redhat.com>
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* Date: Mon Jan 27 17:07:11 2014 -0800
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*
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* ipc: fix compat msgrcv with negative msgtyp
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*
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* Reproduce:
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*
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* 32-bit application using the msgrcv() system call
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* gives the error message:
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*
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* msgrcv: No message of desired type
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*
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* If this progarm is compiled as 64-bit application it works.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/msg.h>
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#include "test.h"
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#include "lapi/abisize.h"
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const char *TCID = "msgrcv08";
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const int TST_TOTAL = 1;
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#ifdef TST_ABI32
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struct mbuf {
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long mtype; /* message type, must be > 0 */
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char mtext[16]; /* message data */
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};
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static void msr(int msqid)
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{
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struct mbuf msbs;
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struct mbuf msbr;
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ssize_t sret;
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long mtype = 121;
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memset(&msbs, 0, sizeof(msbs));
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msbs.mtype = mtype;
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if (msgsnd(msqid, &msbs, sizeof(msbs.mtext), IPC_NOWAIT))
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tst_brkm(TBROK | TERRNO, NULL, "msgsnd error");
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sret = msgrcv(msqid, &msbr, sizeof(msbr.mtext), -mtype, IPC_NOWAIT | MSG_NOERROR);
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if (sret < 0) {
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tst_resm(TFAIL, "Bug: No message of desired type.");
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return;
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}
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if (msbr.mtype != mtype)
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tst_brkm(TBROK, NULL,
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"found mtype %ld, expected %ld\n", msbr.mtype, mtype);
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if ((size_t)sret != sizeof(msbs.mtext))
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tst_brkm(TBROK, NULL, "received %zi, expected %zu\n",
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sret, sizeof(msbs.mtext));
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tst_resm(TPASS, "No regression found.");
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}
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static void msgrcv_test(void)
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{
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int msqid = msgget(IPC_PRIVATE, IPC_CREAT | IPC_EXCL | 0666);
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if (msqid < 0)
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tst_brkm(TBROK | TERRNO, NULL, "msgget error");
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msr(msqid);
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if (msgctl(msqid, IPC_RMID, 0))
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tst_brkm(TBROK | TERRNO, NULL, "msgctl error");
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}
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int main(int argc, char *argv[])
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{
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int lc;
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tst_parse_opts(argc, argv, NULL, NULL);
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for (lc = 0; TEST_LOOPING(lc); lc++)
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msgrcv_test();
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tst_exit();
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}
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#else /* no 64-bit */
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int main(void)
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{
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tst_brkm(TCONF, NULL, "not works when compiled as 64-bit application.");
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}
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#endif
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