| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2002 |
| * |
| * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| /* 06/30/2001 Port to Linux nsharoff@us.ibm.com */ |
| /* 11/11/2002 Port to LTP dbarrera@us.ibm.com */ |
| |
| /* |
| * NAME |
| * msgctl11 |
| * |
| * CALLS |
| * msgget(2) msgctl(2) msgop(2) |
| * |
| * ALGORITHM |
| * Get and manipulate a message queue. |
| * Same as msgctl09 but gets the actual msgmni value under procfs. |
| * |
| * RESTRICTIONS |
| * |
| */ |
| |
| #define _XOPEN_SOURCE 500 |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <sys/ipc.h> |
| #include <sys/msg.h> |
| #include <sys/wait.h> |
| #include <signal.h> |
| #include <errno.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include "test.h" |
| #include "usctest.h" |
| #include "ipcmsg.h" |
| #include "system_specific_process_info.h" |
| |
| #define MAXNREPS 1000 |
| #ifndef CONFIG_COLDFIRE |
| #define MAXNPROCS 1000000 /* This value is set to an arbitrary high limit. */ |
| #else |
| #define MAXNPROCS 100000 /* Coldfire can't deal with 1000000 */ |
| #endif |
| #define MAXNKIDS 10 |
| #define FAIL 1 |
| #define PASS 0 |
| |
| int dotest(key_t, int); |
| int doreader(long, int, int); |
| int dowriter(long, int, int); |
| int fill_buffer(char *, char, int); |
| int verify(char *, char, int, int); |
| void setup(); |
| void cleanup(); |
| |
| /* |
| * These globals must be defined in the test. |
| * */ |
| |
| char *TCID = "msgctl11"; /* Test program identifier. */ |
| int TST_TOTAL = 1; /* Total number of test cases. */ |
| |
| int exp_enos[] = { 0 }; /* List must end with 0 */ |
| int maxnkids = MAXNKIDS; /* Used if pid_max is exceeded */ |
| |
| key_t keyarray[MAXNPROCS]; |
| |
| struct { |
| long type; |
| struct { |
| char len; |
| char pbytes[99]; |
| } data; |
| } buffer; |
| |
| int pidarray[MAXNPROCS]; |
| int rkidarray[MAXNKIDS]; |
| int wkidarray[MAXNKIDS]; |
| int tid; |
| int nprocs, nreps, nkids, MSGMNI; |
| int procstat; |
| void term(int); |
| #ifdef UCLINUX |
| static char *argv0; |
| |
| void do_child_1_uclinux(); |
| static key_t key_uclinux; |
| static int i_uclinux; |
| |
| void do_child_2_uclinux(); |
| static int pid_uclinux; |
| static int child_process_uclinux; |
| |
| void do_child_3_uclinux(); |
| static int rkid_uclinux; |
| #endif |
| void cleanup_msgqueue(int i, int tid); |
| |
| /*-----------------------------------------------------------------*/ |
| int main(argc, argv) |
| int argc; |
| char *argv[]; |
| { |
| register int i, j, ok, pid; |
| int count, status; |
| |
| #ifdef UCLINUX |
| char *msg; /* message returned from parse_opts */ |
| |
| argv0 = argv[0]; |
| |
| /* parse standard options */ |
| if ((msg = |
| parse_opts(argc, argv, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| } |
| |
| maybe_run_child(&do_child_1_uclinux, "ndd", 1, &key_uclinux, |
| &i_uclinux); |
| maybe_run_child(&do_child_2_uclinux, "nddd", 2, &key_uclinux, |
| &pid_uclinux, &child_process_uclinux); |
| maybe_run_child(&do_child_3_uclinux, "nddd", 3, &key_uclinux, |
| &rkid_uclinux, &child_process_uclinux); |
| #endif |
| |
| setup(); |
| |
| if (argc == 1) { |
| /* Set default parameters */ |
| nreps = MAXNREPS; |
| nprocs = MSGMNI; |
| nkids = maxnkids; |
| } else if (argc == 4) { |
| if (atoi(argv[1]) > MAXNREPS) { |
| tst_resm(TCONF, |
| "Requested number of iterations too large, setting to Max. of %d", |
| MAXNREPS); |
| nreps = MAXNREPS; |
| } else { |
| nreps = atoi(argv[1]); |
| } |
| if (atoi(argv[2]) > MSGMNI) { |
| tst_resm(TCONF, |
| "Requested number of processes too large, setting to Max. of %d", |
| MSGMNI); |
| nprocs = MSGMNI; |
| } else { |
| nprocs = atoi(argv[2]); |
| } |
| if (atoi(argv[3]) > maxnkids) { |
| tst_resm(TCONF, |
| "Requested number of read/write pairs too large; setting to Max. of %d", |
| maxnkids); |
| nkids = maxnkids; |
| } else { |
| nkids = atoi(argv[3]); |
| } |
| } else { |
| tst_resm(TCONF, |
| " Usage: %s [ number of iterations number of processes number of read/write pairs ]", |
| argv[0]); |
| tst_exit(); |
| } |
| |
| procstat = 0; |
| srand48((unsigned)getpid() + (unsigned)(getppid() << 16)); |
| tid = -1; |
| |
| /* Setup signal handleing routine */ |
| if (sigset(SIGTERM, term) == SIG_ERR) { |
| tst_resm(TFAIL, "Sigset SIGTERM failed"); |
| tst_exit(); |
| } |
| /* Set up array of unique keys for use in allocating message |
| * queues |
| */ |
| for (i = 0; i < nprocs; i++) { |
| ok = 1; |
| do { |
| /* Get random key */ |
| keyarray[i] = (key_t) lrand48(); |
| /* Make sure key is unique and not private */ |
| if (keyarray[i] == IPC_PRIVATE) { |
| ok = 0; |
| continue; |
| } |
| for (j = 0; j < i; j++) { |
| if (keyarray[j] == keyarray[i]) { |
| ok = 0; |
| break; |
| } |
| ok = 1; |
| } |
| } while (ok == 0); |
| } |
| /*-----------------------------------------------------------------*/ |
| /* Fork a number of processes (nprocs), each of which will |
| * create a message queue with several (nkids) reader/writer |
| * pairs which will read and write a number (iterations) |
| * of random length messages with specific values (keys). |
| */ |
| |
| for (i = 0; i < nprocs; i++) { |
| fflush(stdout); |
| if ((pid = FORK_OR_VFORK()) < 0) { |
| tst_resm(TFAIL, |
| "\tFork failed (may be OK if under stress)"); |
| tst_exit(); |
| } |
| /* Child does this */ |
| if (pid == 0) { |
| #ifdef UCLINUX |
| if (self_exec(argv[0], "ndd", 1, keyarray[i], i) < 0) { |
| tst_resm(TFAIL, "\tself_exec failed"); |
| tst_exit(); |
| } |
| #else |
| procstat = 1; |
| exit(dotest(keyarray[i], i)); |
| #endif |
| } |
| pidarray[i] = pid; |
| } |
| |
| count = 0; |
| while (1) { |
| if ((wait(&status)) > 0) { |
| if (status >> 8 != PASS) { |
| tst_resm(TFAIL, "Child exit status = %d", |
| status >> 8); |
| tst_exit(); |
| } |
| count++; |
| } else { |
| if (errno != EINTR) { |
| break; |
| } |
| #ifdef DEBUG |
| tst_resm(TINFO, "Signal detected during wait"); |
| #endif |
| } |
| } |
| /* Make sure proper number of children exited */ |
| if (count != nprocs) { |
| tst_resm(TFAIL, |
| "Wrong number of children exited, Saw %d, Expected %d", |
| count, nprocs); |
| tst_exit(); |
| } |
| |
| tst_resm(TPASS, "msgctl11 ran successfully!"); |
| |
| cleanup(); |
| |
| return (0); |
| |
| } |
| |
| /*--------------------------------------------------------------------*/ |
| |
| #ifdef UCLINUX |
| void do_child_1_uclinux() |
| { |
| procstat = 1; |
| exit(dotest(key_uclinux, i_uclinux)); |
| } |
| |
| void do_child_2_uclinux() |
| { |
| procstat = 2; |
| exit(doreader(key_uclinux, pid_uclinux, child_process_uclinux)); |
| } |
| |
| void do_child_3_uclinux() |
| { |
| procstat = 2; |
| exit(dowriter(key_uclinux, rkid_uclinux, child_process_uclinux)); |
| } |
| #endif |
| |
| void cleanup_msgqueue(int i, int tid) |
| { |
| /* |
| * Decrease the value of i by 1 because it |
| * is getting incremented even if the fork |
| * is failing. |
| */ |
| |
| i--; |
| /* |
| * Kill all children & free message queue. |
| */ |
| for (; i >= 0; i--) { |
| (void)kill(rkidarray[i], SIGKILL); |
| (void)kill(wkidarray[i], SIGKILL); |
| } |
| |
| if (msgctl(tid, IPC_RMID, 0) < 0) { |
| tst_resm(TFAIL|TERRNO, "Msgctl error in cleanup"); |
| tst_exit(); |
| } |
| } |
| |
| int dotest(key, child_process) |
| key_t key; |
| int child_process; |
| { |
| int id, pid; |
| int i, count, status, exit_status; |
| |
| sighold(SIGTERM); |
| if ((id = msgget(key, IPC_CREAT | S_IRUSR | S_IWUSR)) < 0) { |
| tst_resm(TFAIL|TERRNO, "Msgget error in child %d", |
| child_process); |
| tst_exit(); |
| } |
| tid = id; |
| sigrelse(SIGTERM); |
| |
| exit_status = PASS; |
| |
| for (i = 0; i < nkids; i++) { |
| fflush(stdout); |
| if ((pid = FORK_OR_VFORK()) < 0) { |
| tst_resm(TWARN, |
| "Fork failure in first child of child group %d", |
| child_process); |
| cleanup_msgqueue(i, tid); |
| tst_exit(); |
| } |
| /* First child does this */ |
| if (pid == 0) { |
| #ifdef UCLINUX |
| if (self_exec(argv0, "nddd", 2, key, getpid(), |
| child_process) < 0) { |
| tst_resm(TWARN, "self_exec failed"); |
| cleanup_msgqueue(i, tid); |
| tst_exit(); |
| } |
| #else |
| procstat = 2; |
| exit(doreader(key, getpid(), child_process)); |
| #endif |
| } |
| rkidarray[i] = pid; |
| fflush(stdout); |
| if ((pid = FORK_OR_VFORK()) < 0) { |
| tst_resm(TWARN, |
| "Fork failure in first child of child group %d", |
| child_process); |
| /* |
| * Kill the reader child process |
| */ |
| (void)kill(rkidarray[i], SIGKILL); |
| |
| cleanup_msgqueue(i, tid); |
| tst_exit(); |
| } |
| /* Second child does this */ |
| if (pid == 0) { |
| #ifdef UCLINUX |
| if (self_exec(argv0, "nddd", 3, key, rkidarray[i], |
| child_process) < 0) { |
| tst_resm(TWARN, "\tFork failure in first child " |
| "of child group %d \n", child_process); |
| /* |
| * Kill the reader child process |
| */ |
| (void)kill(rkidarray[i], SIGKILL); |
| |
| cleanup_msgqueue(i, tid); |
| tst_exit(); |
| } |
| #else |
| procstat = 2; |
| exit(dowriter(key, rkidarray[i], child_process)); |
| #endif |
| } |
| wkidarray[i] = pid; |
| } |
| /* Parent does this */ |
| count = 0; |
| while (1) { |
| if ((wait(&status)) > 0) { |
| if (status >> 8 != PASS) { |
| tst_resm(TFAIL, |
| "Child exit status = %d from child group %d", |
| status >> 8, child_process); |
| for (i = 0; i < nkids; i++) { |
| kill(rkidarray[i], SIGTERM); |
| kill(wkidarray[i], SIGTERM); |
| } |
| if (msgctl(tid, IPC_RMID, 0) < 0) { |
| tst_resm(TFAIL|TERRNO, |
| "Msgctl error"); |
| } |
| tst_exit(); |
| } |
| count++; |
| } else { |
| if (errno != EINTR) { |
| break; |
| } |
| } |
| } |
| /* Make sure proper number of children exited */ |
| if (count != (nkids * 2)) { |
| tst_resm(TFAIL, |
| "Wrong number of children exited in child group %d, Saw %d Expected %d", |
| child_process, count, (nkids * 2)); |
| if (msgctl(tid, IPC_RMID, 0) < 0) { |
| tst_resm(TFAIL|TERRNO, "Msgctl error"); |
| } |
| tst_exit(); |
| } |
| if (msgctl(id, IPC_RMID, 0) < 0) { |
| tst_resm(TFAIL|TERRNO, "Msgctl failure in child group %d", |
| child_process); |
| tst_exit(); |
| } |
| exit(exit_status); |
| } |
| |
| int doreader(key, type, child) |
| int type, child; |
| long key; |
| { |
| int i, size; |
| int id; |
| |
| if ((id = msgget(key, 0)) < 0) { |
| tst_resm(TFAIL|TERRNO, |
| "Msgget error in reader of child group %d", |
| child); |
| tst_exit(); |
| } |
| if (id != tid) { |
| tst_resm(TFAIL, |
| "Message queue mismatch in reader of child group %d for message queue id %d", |
| child, id); |
| tst_exit(); |
| } |
| for (i = 0; i < nreps; i++) { |
| if ((size = msgrcv(id, &buffer, 100, type, 0)) < 0) { |
| tst_resm(TFAIL|TERRNO, |
| "Msgrcv error in child %d, read # = %d", |
| (i + 1), child); |
| tst_exit(); |
| } |
| if (buffer.type != type) { |
| tst_resm(TFAIL, |
| "Size mismatch in child %d, read # = %d", |
| child, (i + 1)); |
| tst_resm(TFAIL, |
| "\tfor message size got %d expected %d", |
| size, buffer.data.len); |
| tst_exit(); |
| } |
| if (buffer.data.len + 1 != size) { |
| tst_resm(TFAIL, |
| "Size mismatch in child %d, read # = %d, size = %d, expected = %d", |
| child, (i + 1), buffer.data.len, size); |
| tst_exit(); |
| } |
| if (verify(buffer.data.pbytes, (key % 255), size - 1, child)) { |
| tst_resm(TFAIL, "in child %d read # = %d,key = %lx", |
| child, (i + 1), key); |
| tst_exit(); |
| } |
| key++; |
| } |
| exit(PASS); |
| } |
| |
| int dowriter(key, type, child) |
| int type, child; |
| long key; |
| { |
| int i, size; |
| int id; |
| |
| if ((id = msgget(key, 0)) < 0) { |
| tst_resm(TFAIL|TERRNO, |
| "Msgget error in writer of child group %d", |
| child); |
| tst_exit(); |
| } |
| if (id != tid) { |
| tst_resm(TFAIL, |
| "Message queue mismatch in writer of child group %d", |
| child); |
| tst_resm(TFAIL, "\tfor message queue id %d expected %d", id, |
| tid); |
| tst_exit(); |
| } |
| |
| for (i = 0; i < nreps; i++) { |
| do { |
| size = (lrand48() % 99); |
| } while (size == 0); |
| fill_buffer(buffer.data.pbytes, (key % 255), size); |
| buffer.data.len = size; |
| buffer.type = type; |
| if (msgsnd(id, &buffer, size + 1, 0) < 0) { |
| tst_resm(TFAIL|TERRNO, |
| "Msgsnd error in child %d, key = %lx", |
| child, key); |
| tst_exit(); |
| } |
| key++; |
| } |
| exit(PASS); |
| } |
| |
| int fill_buffer(buf, val, size) |
| register char *buf; |
| char val; |
| register int size; |
| { |
| register int i; |
| |
| for (i = 0; i < size; i++) |
| buf[i] = val; |
| return 0; |
| } |
| |
| /* |
| * verify() |
| * Check a buffer for correct values. |
| */ |
| |
| int verify(buf, val, size, child) |
| register char *buf; |
| char val; |
| register int size; |
| int child; |
| { |
| while (size-- > 0) |
| if (*buf++ != val) { |
| tst_resm(TWARN, |
| "Verify error in child %d, *buf = %x, val = %x, size = %d", |
| child, *buf, val, size); |
| return (FAIL); |
| } |
| return (PASS); |
| } |
| |
| /* ARGSUSED */ |
| void term(int sig) |
| { |
| int i; |
| |
| if (procstat == 0) { |
| #ifdef DEBUG |
| tst_resm(TINFO, "SIGTERM signal received, test killing kids"); |
| #endif |
| for (i = 0; i < nprocs; i++) { |
| if (pidarray[i] > 0) { |
| if (kill(pidarray[i], SIGTERM) < 0) { |
| tst_resm(TBROK, |
| "Kill failed to kill child %d", |
| i); |
| exit(FAIL); |
| } |
| } |
| } |
| return; |
| } |
| |
| if (procstat == 2) { |
| fflush(stdout); |
| exit(PASS); |
| } |
| |
| if (tid == -1) { |
| exit(FAIL); |
| } |
| for (i = 0; i < nkids; i++) { |
| if (rkidarray[i] > 0) |
| kill(rkidarray[i], SIGTERM); |
| if (wkidarray[i] > 0) |
| kill(wkidarray[i], SIGTERM); |
| } |
| } |
| |
| /*************************************************************** |
| * setup() - performs all ONE TIME setup for this test. |
| *****************************************************************/ |
| void setup() |
| { |
| int nr_msgqs, free_pids; |
| |
| tst_tmpdir(); |
| /* You will want to enable some signal handling so you can capture |
| * unexpected signals like SIGSEGV. |
| */ |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| /* One cavet that hasn't been fixed yet. TEST_PAUSE contains the code to |
| * fork the test with the -c option. You want to make sure you do this |
| * before you create your temporary directory. |
| */ |
| TEST_PAUSE; |
| |
| nr_msgqs = get_max_msgqueues(); |
| if (nr_msgqs < 0) |
| cleanup(); |
| |
| MSGMNI = nr_msgqs - get_used_msgqueues(); |
| if (MSGMNI <= 0) { |
| tst_resm(TBROK, |
| "Max number of message queues already used, cannot create more."); |
| cleanup(); |
| } |
| |
| free_pids = get_free_pids(); |
| if (free_pids < 0) { |
| tst_resm(TBROK, "Can't obtain free_pid count"); |
| tst_exit(); |
| } |
| |
| else if (!free_pids) { |
| tst_resm(TBROK, "No free pids"); |
| tst_exit(); |
| } |
| |
| if ((MSGMNI * MAXNKIDS * 2) > (free_pids / 2)) { |
| maxnkids = ((free_pids / 4) / MSGMNI); |
| if (!maxnkids) { |
| tst_resm(TBROK, "Not enough free pids"); |
| tst_exit(); |
| } |
| } |
| |
| tst_resm(TINFO, "Using upto %d pids", free_pids / 2); |
| } |
| |
| /*************************************************************** |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| ****************************************************************/ |
| void cleanup() |
| { |
| int status; |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| /* |
| * Remove the message queue from the system |
| */ |
| #ifdef DEBUG |
| tst_resm(TINFO, "Removing the message queue"); |
| #endif |
| fflush(stdout); |
| (void)msgctl(tid, IPC_RMID, NULL); |
| if ((status = msgctl(tid, IPC_STAT, NULL)) != -1) { |
| (void)msgctl(tid, IPC_RMID, NULL); |
| tst_resm(TFAIL, "msgctl(tid, IPC_RMID) failed"); |
| |
| } |
| |
| fflush(stdout); |
| tst_rmdir(); |
| |
| } |