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