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327 lines
8.5 KiB
327 lines
8.5 KiB
/* IBM Corporation */
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/* 01/03/2003 Port to LTP avenkat@us.ibm.com */
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/* 06/30/2001 Port to Linux nsharoff@us.ibm.com */
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/*
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* Copyright (c) International Business Machines Corp., 2003
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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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* Mmap a sparse file and then fiddle with the hole in the middle.
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* Then check the file contents.
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*
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* Usage: mmapstress07 filename holesize e_pageskip sparseoff
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* EXAMPLE: mmapstress07 myfile 4096 1 4096
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <errno.h>
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#include <sys/wait.h>
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#include "test.h"
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#define FAILED 0
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#define PASSED 1
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static char *tmpname;
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#define ERROR(M) (void)fprintf(stderr, "%s: errno = %d: " M "\n", \
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argv[0], errno)
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#define CLEANERROR(M) (void)close(rofd); \
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(void)close(rwfd); \
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(void)unlink(tmpname); \
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ERROR(M)
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#define CATCH_SIG(SIG) \
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if (sigaction(SIG, &sa, 0) == -1) { \
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ERROR("couldn't catch signal " #SIG); \
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exit(1); \
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}
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extern time_t time(time_t *);
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extern char *ctime(const time_t *);
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extern void exit(int);
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static int checkchars(int fd, char val, int n);
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char *TCID = "mmapstress07";
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int local_flag = PASSED;
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int block_number;
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FILE *temp;
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int TST_TOTAL = 1;
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int anyfail();
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void ok_exit();
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/*ARGSUSED*/ static
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void cleanup(int sig)
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{
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/*
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* Don't check error codes - we could be signaled before the file is
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* created.
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*/
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(void)unlink(tmpname);
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exit(1);
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}
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int main(int argc, char **argv)
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{
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size_t pagesize = (size_t) sysconf(_SC_PAGE_SIZE);
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caddr_t mapaddr;
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time_t t;
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int rofd, rwfd, i;
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struct sigaction sa;
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int e_pageskip;
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#ifdef LARGE_FILE
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off64_t holesize;
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off64_t sparseoff;
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#else /* LARGE_FILE */
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off_t holesize;
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off_t sparseoff;
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#endif /* LARGE_FILE */
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(void)time(&t);
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// (void)printf("%s: Started %s", argv[0], ctime(&t));
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/* Test fsync & mmap over a hole in a sparse file & extend fragment */
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if (argc < 2 || argc > 5) {
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fprintf(stderr,
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"Usage: mmapstress07 filename holesize e_pageskip sparseoff\n");
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/***** ** LTP Port 02/01/03 ** **** */
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fprintf(stderr,
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"\t*holesize should be a multiple of pagesize\n");
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fprintf(stderr, "\t*e_pageskip should be 1 always \n");
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fprintf(stderr,
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"\t*sparseoff should be a multiple of pagesize\n");
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fprintf(stderr, "Example: mmapstress07 myfile 4096 1 8192\n");
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/***** ** ****** ***** ***** ** 02/01/03 */
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anyfail(); /* LTP Port */
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}
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tst_tmpdir();
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tmpname = argv[1];
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if (argc >= 3) {
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#ifdef LARGE_FILE
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holesize = atoll(argv[2]);
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#else /* LARGE_FILE */
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holesize = atoi(argv[2]);
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#endif /* LARGE_FILE */
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} else
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holesize = pagesize;
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if (argc >= 4)
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e_pageskip = atoi(argv[3]);
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else
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e_pageskip = 1;
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if (argc >= 5) {
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#ifdef LARGE_FILE
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sparseoff = atoll(argv[4]);
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#else /* LARGE_FILE */
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sparseoff = atoi(argv[4]);
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#endif /* LARGE_FILE */
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} else
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sparseoff = pagesize * 2;
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sa.sa_handler = cleanup;
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sa.sa_flags = 0;
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if (sigemptyset(&sa.sa_mask)) {
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ERROR("sigemptyset failed");
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return 1;
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}
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CATCH_SIG(SIGINT);
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CATCH_SIG(SIGQUIT);
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CATCH_SIG(SIGTERM);
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#ifdef LARGE_FILE
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if ((rofd = open64(tmpname, O_RDONLY | O_CREAT, 0777)) == -1) {
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#else /* LARGE_FILE */
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if ((rofd = open(tmpname, O_RDONLY | O_CREAT, 0777)) == -1) {
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#endif /* LARGE_FILE */
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ERROR("couldn't reopen rofd for reading");
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anyfail(); /* LTP Port */
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}
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#ifdef LARGE_FILE
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if ((rwfd = open64(tmpname, O_RDWR)) == -1) {
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#else /* LARGE_FILE */
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if ((rwfd = open(tmpname, O_RDWR)) == -1) {
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#endif /* LARGE_FILE */
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CLEANERROR("couldn't reopen rwfd for read/write");
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anyfail(); /* LTP Port */
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}
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#ifdef LARGE_FILE
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if (lseek64(rwfd, sparseoff, SEEK_SET) < 0) {
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#else /* LARGE_FILE */
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if (lseek(rwfd, sparseoff, SEEK_SET) < 0) {
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#endif /* LARGE_FILE */
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perror("lseek");
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anyfail(); /* LTP Port */
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}
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/* fill file with junk. */
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i = 0;
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while (i < pagesize && write(rwfd, "a", 1) == 1)
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i++;
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if (i != pagesize) {
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CLEANERROR("couldn't fill first part of file with junk");
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anyfail(); /* LTP Port */
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}
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#ifdef LARGE_FILE
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if (lseek64(rwfd, holesize, SEEK_CUR) == -1) {
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#else /* LARGE_FILE */
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if (lseek(rwfd, holesize, SEEK_CUR) == -1) {
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#endif /* LARGE_FILE */
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CLEANERROR("couldn't create hole in file");
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anyfail(); /* LTP Port */
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}
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/* create fragment */
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i = 0;
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while (i < (pagesize >> 1) && write(rwfd, "b", 1) == 1)
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i++;
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if (i != (pagesize >> 1)) {
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CLEANERROR("couldn't fill second part of file with junk");
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anyfail(); /* LTP Port */
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}
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/* At this point fd contains 1 page of a's, holesize bytes skipped,
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* 1/2 page of b's.
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*/
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#ifdef LARGE_FILE
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if ((mapaddr = mmap64((caddr_t) 0, pagesize * 2 + holesize, PROT_READ,
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MAP_SHARED | MAP_FILE, rofd,
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sparseoff)) == (caddr_t) - 1) {
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#else /* LARGE_FILE */
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if ((mapaddr = mmap((caddr_t) 0, pagesize * 2 + holesize, PROT_READ,
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MAP_SHARED | MAP_FILE, rofd,
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sparseoff)) == (caddr_t) - 1) {
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#endif /* LARGE_FILE */
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CLEANERROR("mmap tmp file failed");
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anyfail(); /* LTP Port */
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}
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/* fill out remainder of page + one more page to extend mmapped flag */
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while (i < 2 * pagesize && write(rwfd, "c", 1) == 1)
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i++;
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if (i != 2 * pagesize) {
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CLEANERROR("couldn't fill second part of file with junk");
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anyfail(); /* LTP Port */
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}
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/* fiddle with mmapped hole */
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if (*(mapaddr + pagesize + (holesize >> 1)) != 0) {
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CLEANERROR("hole not filled with 0's");
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anyfail(); /* LTP Port */
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}
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#ifdef LARGE_FILE
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if (lseek64(rwfd, sparseoff + e_pageskip * pagesize, SEEK_SET) == -1) {
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#else /* LARGE_FILE */
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if (lseek(rwfd, sparseoff + e_pageskip * pagesize, SEEK_SET) == -1) {
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#endif /* LARGE_FILE */
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CLEANERROR("couldn't lseek back to put e's in hole");
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anyfail(); /*LTP Port */
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}
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i = 0;
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while (i < pagesize && write(rwfd, "e", 1) == 1)
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i++;
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if (i != pagesize) {
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CLEANERROR("couldn't part of hole with e's");
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anyfail(); /*LTP Port */
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}
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if (fsync(rwfd) == -1) {
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CLEANERROR("fsync failed");
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anyfail(); /* LTP Port */
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}
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#ifdef LARGE_FILE
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if (lseek64(rofd, sparseoff, SEEK_SET) == -1) {
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#else /* LARGE_FILE */
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if (lseek(rofd, sparseoff, SEEK_SET) == -1) {
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#endif /* LARGE_FILE */
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CLEANERROR("couldn't lseek to begining to verify contents");
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anyfail(); /* LTP Port */
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}
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if (munmap(mapaddr, holesize + 2 * pagesize) == -1) {
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CLEANERROR("munmap of tmp file failed");
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anyfail(); /* LTP Port */
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}
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/* check file's contents */
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if (checkchars(rofd, 'a', pagesize)) {
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CLEANERROR("first page not filled with a's");
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anyfail(); /* LTP Port */
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}
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if (checkchars(rofd, '\0', (e_pageskip - 1) * pagesize)) {
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CLEANERROR("e_skip not filled with 0's");
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anyfail(); /* LTP Port */
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}
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if (checkchars(rofd, 'e', pagesize)) {
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CLEANERROR("part after first 0's not filled with e's");
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anyfail(); /* LTP Port */
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}
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if (checkchars(rofd, '\0', holesize - e_pageskip * pagesize)) {
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CLEANERROR("second hole section not filled with 0's");
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anyfail(); /* LTP Port */
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}
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if (checkchars(rofd, 'b', (pagesize >> 1))) {
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CLEANERROR("next to last half page not filled with b's");
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anyfail(); /* LTP Port */
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}
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if (checkchars(rofd, 'c', pagesize + (pagesize >> 1))) {
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CLEANERROR("extended fragment not filled with c's");
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anyfail(); /* LTP Port */
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}
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if (close(rofd) == -1) {
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CLEANERROR("second close of rofd failed");
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anyfail(); /* LTP Port */
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}
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if (unlink(tmpname) == -1) {
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CLEANERROR("unlink failed");
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anyfail(); /* LTP Port */
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}
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(void)time(&t);
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// (void)printf("%s: Finished %s", argv[0], ctime(&t));
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ok_exit();
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tst_exit();
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}
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/* checkchars
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* verrify that the next n characters of file fd are of value val.
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* 0 = success; -1 = failure
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*/
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static int checkchars(int fd, char val, int n)
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{
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int i;
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char buf;
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for (i = 0; i < n && read(fd, &buf, 1) == 1; i++)
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if (buf != val)
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return -1;
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return 0;
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}
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/***** ** LTP Port ** *****/
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int anyfail(void)
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{
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tst_brkm(TFAIL, tst_rmdir, "Test failed\n");
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}
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void ok_exit(void)
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{
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tst_resm(TPASS, "Test passed\n");
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tst_rmdir();
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tst_exit();
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}
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/***** ** ****** ** *****/
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