/* IBM Corporation */
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/* 01/02/2003 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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*
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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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/* uiomove_phys_fail:
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* Test a copyout/copyin failure in the kernel primitive uiomove_phys by
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* reading into or writing from a mmaped regular file which lacks the
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* needed permissions.
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*/
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#include <sys/types.h>
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#include <sys/mman.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 <stdio.h>
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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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#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)unlink(tmpname); 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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static char tmpname[] = "fileXXXXXX";
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static int fd;
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/***** LTP Port *****/
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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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int local_flag = PASSED;
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char *TCID = "mmapstress02"; //uiomove_phys_fail
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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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/***** ** ** *****/
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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)close(fd);
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(void)unlink(tmpname);
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tst_rmdir();
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tst_exit();
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}
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int main(int argc, char *argv[])
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{
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caddr_t mmapaddr;
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size_t pagesize = sysconf(_SC_PAGE_SIZE);
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time_t t;
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int i;
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struct sigaction sa;
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tst_tmpdir();
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if (!argc) {
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(void)fprintf(stderr, "argc == 0\n");
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return 1;
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}
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if (argc != 1) {
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(void)fprintf(stderr, "usage: %s\n", argv[0]);
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return 1;
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}
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(void)time(&t);
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if ((fd = mkstemp(tmpname)) == -1) {
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ERROR("mkstemp failed");
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anyfail();
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}
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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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anyfail();
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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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if (sbrk(2 * pagesize - ((ulong) sbrk(0) & (pagesize - 1))) ==
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(char *)-1) {
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CLEANERROR("couldn't round up brk");
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anyfail();
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}
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if ((mmapaddr = sbrk(0)) == (caddr_t) - 1) {
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CLEANERROR("couldn't find top of brk");
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anyfail();
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}
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/* Write a page of garbage into the file, so we can mmap it without
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* asking for PROT_WRITE.
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*/
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for (i = pagesize; i; i--)
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*(mmapaddr - i) = 'a';
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if (write(fd, (char *)mmapaddr - pagesize, pagesize) != pagesize) {
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CLEANERROR("write failed");
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anyfail();
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}
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if (mmap(mmapaddr, pagesize, PROT_NONE,
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MAP_FIXED | MAP_PRIVATE | MAP_FILE, fd, 0) != mmapaddr) {
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CLEANERROR("couldn't mmap file");
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anyfail();
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}
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/*
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* Since the file is mmapped, mmreg_new and uiomove_phys handle all
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* I/O
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*/
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if (lseek(fd, 0, SEEK_SET) != 0) {
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CLEANERROR("lseek failed");
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anyfail();
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}
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if (read(fd, (char *)mmapaddr, pagesize) != -1) {
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CLEANERROR("read succeded");
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anyfail();
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}
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if (errno != EFAULT) {
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CLEANERROR("read didn't set errno = EFAULT");
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anyfail();
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}
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if (write(fd, (char *)mmapaddr, pagesize) != -1) {
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CLEANERROR("write succeded");
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anyfail();
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}
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if (errno != EFAULT) {
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CLEANERROR("write didn't set errno = EFAULT");
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anyfail();
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}
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if (close(fd) == -1) {
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CLEANERROR("close failed");
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anyfail();
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}
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if (munmap(mmapaddr, pagesize) == -1) {
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CLEANERROR("munmap failed");
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anyfail();
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}
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if (unlink(tmpname) == -1) {
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ERROR("unlink failed");
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anyfail();
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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(); /* LTP Port */
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tst_exit();
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}
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/***** LTP Port *****/
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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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int anyfail(void)
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{
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tst_brkm(TFAIL, tst_rmdir, "Test failed");
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}
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/***** ** ** *****/
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