/*
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*
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* Copyright (c) International Business Machines Corp., 2002
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* Copyright (c) Cyril Hrubis chrubis@suse.cz 2009
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* NAME
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* ftest01.c -- test file I/O (ported from SPIE section2, filesuite, by Airong Zhang)
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*
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* CALLS
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* lseek, read, write
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* truncate, ftruncate, fsync, sync, fstat
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*
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* ALGORITHM
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* A bitmap is used to map pieces of a file.
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* Loop: pick a random piece of the file
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* if we haven't seen it before make sure it is zero,
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* write pattern
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* if we have seen it before make sure correct pattern.
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*
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* This was originally written by rbk - was program tfio.c
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* Modified by dale to integrate with test suites.
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*
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* RESTRICTIONS
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* Runs a long time with default args - can take others on input
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* line. Use with "term mode".
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* If run on vax the ftruncate will not be random - will always go to
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* start of file. NOTE: produces a very high load average!!
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*
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* CAUTION!!
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* If a file is supplied to this program with the "-f" option
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* it will be removed with a system("rm -rf filename") call.
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*
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*/
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#define _GNU_SOURCE 1
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include "test.h"
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#include "safe_macros.h"
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#include "libftest.h"
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char *TCID = "ftest01";
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int TST_TOTAL = 1;
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static void setup(void);
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static void runtest(void);
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static void dotest(int, int, int);
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static void domisc(int, int, char *);
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static void cleanup(void);
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static void term(int sig);
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#define PASSED 1
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#define FAILED 0
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#define MAXCHILD 25
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#define K_1 1024
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#define K_2 2048
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#define K_4 4096
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static int csize; /* chunk size */
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static int iterations; /* # total iterations */
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static int max_size; /* max file size */
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static int misc_intvl; /* for doing misc things; 0 ==> no */
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static int nchild; /* how many children */
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static int fd; /* file descriptor used by child */
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static int parent_pid;
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static int pidlist[MAXCHILD];
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static char test_name[2];
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static char fuss[MAXPATHLEN]; /* directory to do this in */
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static char homedir[MAXPATHLEN]; /* where we started */
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static int local_flag;
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int main(int ac, char *av[])
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{
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int lc;
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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runtest();
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if (local_flag == PASSED)
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tst_resm(TPASS, "Test passed.");
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else
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tst_resm(TFAIL, "Test failed.");
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}
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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tst_tmpdir();
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getcwd(homedir, sizeof(homedir));
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parent_pid = getpid();
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if (!fuss[0])
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sprintf(fuss, "./ftest1.%d", getpid());
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mkdir(fuss, 0755);
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SAFE_CHDIR(NULL, fuss);
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/*
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* Default values for run conditions.
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*/
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iterations = 10;
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nchild = 5;
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csize = K_2; /* should run with 1, 2, and 4 K sizes */
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max_size = K_1 * K_1;
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misc_intvl = 10;
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if (sigset(SIGTERM, term) == SIG_ERR) {
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tst_brkm(TBROK | TERRNO, NULL, "sigset failed");
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}
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local_flag = PASSED;
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}
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static void runtest(void)
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{
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pid_t pid;
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int i, child, count, nwait, status;
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nwait = 0;
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for (i = 0; i < nchild; i++) {
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test_name[0] = 'a' + i;
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test_name[1] = '\0';
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fd = SAFE_OPEN(NULL, test_name, O_RDWR | O_CREAT | O_TRUNC,
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0666);
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if ((child = fork()) == 0) {
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dotest(nchild, i, fd);
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exit(0);
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}
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close(fd);
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if (child < 0) {
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tst_brkm(TBROK | TERRNO, NULL, "fork failed");
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} else {
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pidlist[i] = child;
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nwait++;
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}
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}
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/*
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* Wait for children to finish.
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*/
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count = 0;
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while (1) {
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if ((child = wait(&status)) >= 0) {
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if (status) {
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tst_resm(TFAIL,
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"Test{%d} failed, expected 0 exit",
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child);
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local_flag = FAILED;
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}
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++count;
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} else {
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if (errno != EINTR)
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break;
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}
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}
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/*
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* Should have collected all children.
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*/
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if (count != nwait) {
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tst_resm(TFAIL, "Wrong # children waited on, count = %d",
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count);
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local_flag = FAILED;
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}
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if (local_flag == PASSED)
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tst_resm(TPASS, "Test passed in fork and wait.");
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else
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tst_resm(TFAIL, "Test failed in fork and wait.");
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chdir(homedir);
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pid = fork();
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if (pid < 0) {
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tst_brkm(TBROK | TERRNO, sync, "fork failed");
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tst_exit();
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}
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if (pid == 0) {
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execl("/bin/rm", "rm", "-rf", fuss, NULL);
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exit(1);
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}
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wait(&status);
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if (status)
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tst_resm(TINFO, "CAUTION - ftest1, '%s' may not be removed",
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fuss);
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sync();
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}
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/*
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* dotest()
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* Children execute this.
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*
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* Randomly read/mod/write chunks with known pattern and check.
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* When fill sectors, iterate.
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*/
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#define NMISC 4
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enum m_type { m_fsync, m_trunc, m_sync, m_fstat };
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char *m_str[] = { "fsync", "trunc", "sync", "fstat" };
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int misc_cnt[NMISC]; /* counts # of each kind of misc */
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int file_max; /* file-max size */
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int nchunks;
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int last_trunc = -1;
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int tr_flag;
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enum m_type type = m_fsync;
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#define CHUNK(i) ((i) * csize)
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#define NEXTMISC ((rand() % misc_intvl) + 5)
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/* XXX (garrcoop): should not be using libltp as it runs forked. */
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static void dotest(int testers, int me, int fd)
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{
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char *bits, *hold_bits, *buf, *val_buf, *zero_buf;
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char val;
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int count, collide, chunk, whenmisc, xfr, i;
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struct stat stat;
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nchunks = max_size / csize;
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if ((bits = calloc((nchunks + 7) / 8, 1)) == 0) {
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tst_brkm(TBROK,
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NULL,
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"Test broken due to inability of malloc(bits).");
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}
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if ((hold_bits = calloc((nchunks + 7) / 8, 1)) == 0) {
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tst_brkm(TBROK,
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NULL,
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"Test broken due to inability of malloc(hold_bits).");
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}
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if ((buf = (calloc(csize, 1))) == 0) {
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tst_brkm(TBROK, NULL,
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"Test broken due to inability of malloc(buf).");
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}
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if ((val_buf = (calloc(csize, 1))) == 0) {
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tst_brkm(TBROK,
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NULL,
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"Test broken due to inability of malloc(val_buf).");
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}
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if ((zero_buf = (calloc(csize, 1))) == 0) {
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tst_brkm(TBROK,
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NULL,
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"Test broken due to inability of malloc(zero_buf).");
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}
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/*
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* No init sectors; allow file to be sparse.
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*/
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val = (64 / testers) * me + 1;
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/*
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* For each iteration:
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* zap bits array
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* loop:
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* pick random chunk, read it.
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* if corresponding bit off {
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* verify == 0. (sparse file)
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* ++count;
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* } else
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* verify == val.
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* write "val" on it.
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* repeat until count = nchunks.
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* ++val.
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*/
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srand(getpid());
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if (misc_intvl)
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whenmisc = NEXTMISC;
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while (iterations-- > 0) {
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for (i = 0; i < NMISC; i++)
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misc_cnt[i] = 0;
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ftruncate(fd, 0);
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file_max = 0;
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memset(bits, 0, (nchunks + 7) / 8);
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memset(hold_bits, 0, (nchunks + 7) / 8);
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memset(val_buf, val, csize);
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memset(zero_buf, 0, csize);
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count = 0;
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collide = 0;
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while (count < nchunks) {
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chunk = rand() % nchunks;
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/*
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* Read it.
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*/
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if (lseek(fd, CHUNK(chunk), 0) < 0) {
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tst_brkm(TFAIL,
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NULL,
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"Test[%d]: lseek(0) fail at %x, errno = %d.",
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me, CHUNK(chunk), errno);
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}
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if ((xfr = read(fd, buf, csize)) < 0) {
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tst_brkm(TFAIL,
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NULL,
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"Test[%d]: read fail at %x, errno = %d.",
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me, CHUNK(chunk), errno);
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}
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/*
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* If chunk beyond EOF just write on it.
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* Else if bit off, haven't seen it yet.
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* Else, have. Verify values.
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*/
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if (CHUNK(chunk) >= file_max) {
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bits[chunk / 8] |= (1 << (chunk % 8));
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++count;
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} else if ((bits[chunk / 8] & (1 << (chunk % 8))) == 0) {
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if (xfr != csize) {
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tst_brkm(TFAIL,
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NULL,
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"Test[%d]: xfr=%d != %d, zero read.",
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me, xfr, csize);
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}
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if (memcmp(buf, zero_buf, csize)) {
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tst_resm(TFAIL,
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"Test[%d] bad verify @ 0x%x for val %d "
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"count %d xfr %d file_max 0x%x, should be %d.",
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me, CHUNK(chunk), val, count,
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xfr, file_max, zero_buf[0]);
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tst_resm(TINFO,
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"Test[%d]: last_trunc = 0x%x",
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me, last_trunc);
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fstat(fd, &stat);
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tst_resm(TINFO,
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"\tStat: size=%llx, ino=%x",
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stat.st_size, (unsigned)stat.st_ino);
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sync();
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ft_dumpbuf(buf, csize);
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ft_dumpbits(bits, (nchunks + 7) / 8);
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ft_orbits(hold_bits, bits,
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(nchunks + 7) / 8);
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tst_resm(TINFO, "Hold ");
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ft_dumpbits(hold_bits,
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(nchunks + 7) / 8);
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tst_exit();
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}
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bits[chunk / 8] |= (1 << (chunk % 8));
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++count;
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} else {
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if (xfr != csize) {
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tst_brkm(TFAIL,
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NULL,
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"\tTest[%d]: xfr=%d != %d, val read.",
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me, xfr, csize);
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}
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++collide;
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if (memcmp(buf, val_buf, csize)) {
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tst_resm(TFAIL,
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"Test[%d] bad verify @ 0x%x for val %d "
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"count %d xfr %d file_max 0x%x.",
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me, CHUNK(chunk), val, count,
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xfr, file_max);
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tst_resm(TINFO,
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"Test[%d]: last_trunc = 0x%x",
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me, last_trunc);
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fstat(fd, &stat);
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tst_resm(TINFO,
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"\tStat: size=%llx, ino=%x",
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stat.st_size, (unsigned)stat.st_ino);
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sync();
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ft_dumpbuf(buf, csize);
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ft_dumpbits(bits, (nchunks + 7) / 8);
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ft_orbits(hold_bits, bits,
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(nchunks + 7) / 8);
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tst_resm(TINFO, "Hold ");
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ft_dumpbits(hold_bits,
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(nchunks + 7) / 8);
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tst_exit();
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}
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}
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/*
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* Write it.
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*/
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if (lseek(fd, -xfr, 1) < 0) {
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tst_brkm(TFAIL,
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NULL,
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"Test[%d]: lseek(1) fail at %x, errno = %d.",
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me, CHUNK(chunk), errno);
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}
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if ((xfr = write(fd, val_buf, csize)) < csize) {
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if (errno == ENOSPC) {
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tst_resm(TFAIL,
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"Test[%d]: no space, exiting.",
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me);
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fsync(fd);
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tst_exit();
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}
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tst_brkm(TFAIL,
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NULL,
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"Test[%d]: write fail at %x xfr %d, errno = %d.",
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me, CHUNK(chunk), xfr, errno);
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}
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if (CHUNK(chunk) + csize > file_max)
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file_max = CHUNK(chunk) + csize;
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/*
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* If hit "misc" interval, do it.
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*/
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if (misc_intvl && --whenmisc <= 0) {
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ft_orbits(hold_bits, bits, (nchunks + 7) / 8);
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domisc(me, fd, bits);
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whenmisc = NEXTMISC;
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}
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if (count + collide > 2 * nchunks)
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break;
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}
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/*
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* End of iteration, maybe before doing all chunks.
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*/
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fsync(fd);
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++misc_cnt[m_fsync];
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//tst_resm(TINFO, "Test{%d} val %d done, count = %d, collide = {%d}",
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// me, val, count, collide);
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//for (i = 0; i < NMISC; i++)
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// tst_resm(TINFO, "Test{%d}: {%d} %s's.", me, misc_cnt[i], m_str[i]);
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++val;
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}
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}
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/*
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* domisc()
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* Inject misc syscalls into the thing.
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*/
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static void domisc(int me, int fd, char *bits)
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{
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int chunk;
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struct stat sb;
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if (type > m_fstat)
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type = m_fsync;
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switch (type) {
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case m_fsync:
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if (fsync(fd) < 0) {
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tst_brkm(TFAIL | TERRNO, NULL,
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"Test[%d]: fsync failed.", me);
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}
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break;
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case m_trunc:
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chunk = rand() % (file_max / csize);
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file_max = CHUNK(chunk);
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last_trunc = file_max;
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if (tr_flag) {
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if (ftruncate(fd, file_max) < 0) {
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tst_brkm(TFAIL | TERRNO, NULL,
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"Test[%d]: ftruncate failed @ 0x%x.",
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me, file_max);
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}
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tr_flag = 0;
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} else {
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if (truncate(test_name, file_max) < 0) {
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tst_brkm(TFAIL | TERRNO, NULL,
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"Test[%d]: truncate failed @ 0x%x.",
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me, file_max);
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}
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tr_flag = 1;
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}
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for (; chunk % 8 != 0; chunk++)
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bits[chunk / 8] &= ~(1 << (chunk % 8));
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for (; chunk < nchunks; chunk += 8)
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bits[chunk / 8] = 0;
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break;
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case m_sync:
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sync();
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break;
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case m_fstat:
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if (fstat(fd, &sb) < 0)
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tst_brkm(TFAIL | TERRNO, NULL,
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"\tTest[%d]: fstat failed", me);
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if (sb.st_size != file_max)
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tst_brkm(TFAIL, NULL,
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"\tTest[%d]: fstat() mismatch; st_size=%lu, "
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"file_max=%x.", me, sb.st_size, file_max);
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break;
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}
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++misc_cnt[type];
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++type;
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}
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/*
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* SIGTERM signal handler.
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*/
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static void term(int sig LTP_ATTRIBUTE_UNUSED)
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{
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int i;
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tst_resm(TINFO, "\tterm -[%d]- got sig term.", getpid());
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/*
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* If run by hand we like to have the parent send the signal to
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* the child processes.
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*/
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if (parent_pid == getpid()) {
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for (i = 0; i < nchild; i++)
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if (pidlist[i])
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kill(pidlist[i], SIGTERM);
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tst_exit();
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}
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tst_resm(TINFO, "\tunlinking '%s'", test_name);
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close(fd);
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if (unlink(test_name) == -1)
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tst_resm(TBROK | TERRNO, "unlink failed");
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tst_exit();
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}
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static void cleanup(void)
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{
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tst_rmdir();
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}
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