robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) International Business Machines Corp., 2002 |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 13 | * the GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
Wanlong Gao | 4548c6c | 2012-10-19 18:03:36 +0800 | [diff] [blame] | 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 18 | */ |
| 19 | |
robbiew | b084888 | 2003-03-25 15:05:02 +0000 | [diff] [blame] | 20 | /* 03/21/2003 enable ia64 Jacky.Malcles */ |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 21 | /* 12/20/2002 Port to LTP robbiew@us.ibm.com */ |
| 22 | /* 06/30/2001 Port to Linux nsharoff@us.ibm.com */ |
| 23 | |
| 24 | /* |
| 25 | * NAME |
robbiew | b084888 | 2003-03-25 15:05:02 +0000 | [diff] [blame] | 26 | * shmt04 |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 27 | * |
| 28 | * CALLS |
robbiew | b084888 | 2003-03-25 15:05:02 +0000 | [diff] [blame] | 29 | * shmctl(2) shmget(2) shmat(2) |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 30 | * |
| 31 | * ALGORITHM |
| 32 | * Parent process forks a child. Child pauses until parent has created |
| 33 | * a shared memory segment, attached to it and written to it too. At that |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 34 | * time child gets the shared memory segment id, attaches to it and |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 35 | * verifies that its contents are the same as the contents of the |
| 36 | * parent attached segment. |
| 37 | * |
| 38 | */ |
| 39 | |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 40 | #include <stdio.h> |
| 41 | #include <sys/types.h> |
| 42 | #include <sys/ipc.h> |
| 43 | #include <sys/shm.h> |
| 44 | #include <sys/wait.h> |
robbiew | b084888 | 2003-03-25 15:05:02 +0000 | [diff] [blame] | 45 | #include <sys/utsname.h> |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 46 | #include <signal.h> |
| 47 | #include <errno.h> |
| 48 | #include <stdlib.h> |
| 49 | #include <unistd.h> |
| 50 | |
| 51 | /** LTP Port **/ |
| 52 | #include "test.h" |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 53 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 54 | char *TCID = "shmt04"; /* Test program identifier. */ |
| 55 | int TST_TOTAL = 2; /* Total number of test cases. */ |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 56 | /**************/ |
| 57 | |
robbiew | b084888 | 2003-03-25 15:05:02 +0000 | [diff] [blame] | 58 | key_t key; |
robbiew | 95157a9 | 2003-01-08 21:43:27 +0000 | [diff] [blame] | 59 | sigset_t sigset; |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 60 | |
robbiew | b084888 | 2003-03-25 15:05:02 +0000 | [diff] [blame] | 61 | #define SIZE 16*1024 |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 62 | |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 63 | int child(); |
| 64 | int rm_shm(int); |
| 65 | |
| 66 | int main() |
| 67 | { |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 68 | char *cp = NULL; |
| 69 | int pid, pid1, shmid; |
| 70 | int status; |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 71 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 72 | key = (key_t) getpid(); |
robbiew | b084888 | 2003-03-25 15:05:02 +0000 | [diff] [blame] | 73 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 74 | sigemptyset(&sigset); |
| 75 | sigaddset(&sigset, SIGUSR1); |
| 76 | sigprocmask(SIG_BLOCK, &sigset, NULL); |
| 77 | |
| 78 | pid = fork(); |
| 79 | switch (pid) { |
| 80 | case -1: |
Cyril Hrubis | 526fdf8 | 2014-12-04 14:35:01 +0100 | [diff] [blame] | 81 | tst_brkm(TBROK, NULL, "fork failed"); |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 82 | case 0: |
| 83 | child(); |
| 84 | } |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 85 | |
| 86 | /*----------------------------------------------------------*/ |
| 87 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 88 | if ((shmid = shmget(key, SIZE, IPC_CREAT | 0666)) < 0) { |
| 89 | perror("shmget"); |
| 90 | tst_resm(TFAIL, "Error: shmget: shmid = %d, errno = %d\n", |
| 91 | shmid, errno); |
| 92 | /* |
| 93 | * kill the child if parent failed to do the attach |
| 94 | */ |
| 95 | (void)kill(pid, SIGINT); |
| 96 | } else { |
Cyril Hrubis | d2db480 | 2014-09-24 17:08:17 +0200 | [diff] [blame] | 97 | cp = shmat(shmid, NULL, 0); |
robbiew | c866f1d | 2003-07-29 19:46:14 +0000 | [diff] [blame] | 98 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 99 | if (cp == (char *)-1) { |
| 100 | perror("shmat"); |
| 101 | tst_resm(TFAIL, |
| 102 | "Error: shmat: shmid = %d, errno = %d\n", |
| 103 | shmid, errno); |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 104 | |
robbiew | b084888 | 2003-03-25 15:05:02 +0000 | [diff] [blame] | 105 | /* kill the child if parent failed to do the attch */ |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 106 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 107 | kill(pid, SIGINT); |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 108 | |
robbiew | b084888 | 2003-03-25 15:05:02 +0000 | [diff] [blame] | 109 | /* remove shared memory segment */ |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 110 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 111 | rm_shm(shmid); |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 112 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 113 | tst_exit(); |
| 114 | } |
| 115 | *cp = 'A'; |
| 116 | *(cp + 1) = 'B'; |
| 117 | *(cp + 2) = 'C'; |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 118 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 119 | kill(pid, SIGUSR1); |
| 120 | while ((pid1 = wait(&status)) < 0 && (errno == EINTR)) ; |
| 121 | if (pid1 != pid) { |
| 122 | tst_resm(TFAIL, "Waited on the wrong child"); |
| 123 | tst_resm(TFAIL, |
| 124 | "Error: wait_status = %d, pid1= %d\n", status, |
| 125 | pid1); |
| 126 | } |
| 127 | } |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 128 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 129 | tst_resm(TPASS, "shmget,shmat"); |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 130 | |
| 131 | /*----------------------------------------------------------*/ |
| 132 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 133 | if (shmdt(cp) < 0) { |
| 134 | tst_resm(TFAIL, "shmdt"); |
| 135 | } |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 136 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 137 | tst_resm(TPASS, "shmdt"); |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 138 | |
| 139 | /*----------------------------------------------------------*/ |
| 140 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 141 | rm_shm(shmid); |
| 142 | tst_exit(); |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | int child() |
| 146 | { |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 147 | int shmid, chld_pid; |
| 148 | char *cp; |
| 149 | int sig; |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 150 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 151 | sigwait(&sigset, &sig); |
| 152 | chld_pid = getpid(); |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 153 | /*--------------------------------------------------------*/ |
| 154 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 155 | if ((shmid = shmget(key, SIZE, 0)) < 0) { |
| 156 | perror("shmget:child process"); |
| 157 | tst_resm(TFAIL, |
| 158 | "Error: shmget: errno=%d, shmid=%d, child_pid=%d\n", |
| 159 | errno, shmid, chld_pid); |
| 160 | } else { |
Cyril Hrubis | d2db480 | 2014-09-24 17:08:17 +0200 | [diff] [blame] | 161 | cp = shmat(shmid, NULL, 0); |
subrata_modak | 78b1912 | 2008-05-15 06:54:17 +0000 | [diff] [blame] | 162 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 163 | if (cp == (char *)-1) { |
| 164 | perror("shmat:child process"); |
| 165 | tst_resm(TFAIL, |
| 166 | "Error: shmat: errno=%d, shmid=%d, child_pid=%d\n", |
| 167 | errno, shmid, chld_pid); |
| 168 | } else { |
| 169 | if (*cp != 'A') { |
| 170 | tst_resm(TFAIL, "child: not A\n"); |
| 171 | } |
| 172 | if (*(cp + 1) != 'B') { |
| 173 | tst_resm(TFAIL, "child: not B\n"); |
| 174 | } |
| 175 | if (*(cp + 2) != 'C') { |
| 176 | tst_resm(TFAIL, "child: not C\n"); |
| 177 | } |
| 178 | if (*(cp + 8192) != 0) { |
| 179 | tst_resm(TFAIL, "child: not 0\n"); |
| 180 | } |
| 181 | } |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 182 | |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 183 | } |
| 184 | tst_exit(); |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | int rm_shm(shmid) |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 188 | int shmid; |
robbiew | 38f7911 | 2002-12-23 17:01:49 +0000 | [diff] [blame] | 189 | { |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 190 | if (shmctl(shmid, IPC_RMID, NULL) == -1) { |
| 191 | perror("shmctl"); |
Cyril Hrubis | 526fdf8 | 2014-12-04 14:35:01 +0100 | [diff] [blame] | 192 | tst_brkm(TFAIL, |
| 193 | NULL, |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 194 | "shmctl Failed to remove: shmid = %d, errno = %d\n", |
| 195 | shmid, errno); |
vapier | 2e2af47 | 2007-03-13 20:15:16 +0000 | [diff] [blame] | 196 | } |
| 197 | return (0); |
Chris Dearman | ec6edca | 2012-10-17 19:54:01 -0700 | [diff] [blame] | 198 | } |