/* IBM Corporation */
/* 01/02/2003 Port to LTP avenkat@us.ibm.com */
/* 06/30/2001 Port to Linux nsharoff@us.ibm.com */
/*
* Copyright (c) International Business Machines Corp., 2003
*
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* uiomove_phys_fail:
* Test a copyout/copyin failure in the kernel primitive uiomove_phys by
* reading into or writing from a mmaped regular file which lacks the
* needed permissions.
*/
#include <sys/types.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <errno.h>
#include <stdio.h>
extern time_t time(time_t *);
extern char *ctime(const time_t *);
extern void exit(int);
#define ERROR(M) (void)fprintf(stderr, "%s: errno = %d; " M "\n", \
argv[0], errno)
#define CLEANERROR(M) (void)unlink(tmpname); ERROR(M)
#define CATCH_SIG(SIG) \
if (sigaction(SIG, &sa, 0) == -1) { \
ERROR("couldn't catch signal " #SIG); \
exit(1); \
}
static char tmpname[] = "fileXXXXXX";
static int fd;
/***** LTP Port *****/
#include "test.h"
#define FAILED 0
#define PASSED 1
int local_flag = PASSED;
char *TCID = "mmapstress02"; //uiomove_phys_fail
FILE *temp;
int TST_TOTAL = 1;
int anyfail();
void ok_exit();
/***** ** ** *****/
/*ARGSUSED*/ static
void cleanup(int sig)
{
/*
* Don't check error codes - we could be signaled before the file is
* created.
*/
(void)close(fd);
(void)unlink(tmpname);
tst_rmdir();
tst_exit();
}
int main(int argc, char *argv[])
{
caddr_t mmapaddr;
size_t pagesize = sysconf(_SC_PAGE_SIZE);
time_t t;
int i;
struct sigaction sa;
tst_tmpdir();
if (!argc) {
(void)fprintf(stderr, "argc == 0\n");
return 1;
}
if (argc != 1) {
(void)fprintf(stderr, "usage: %s\n", argv[0]);
return 1;
}
(void)time(&t);
if ((fd = mkstemp(tmpname)) == -1) {
ERROR("mkstemp failed");
anyfail();
}
sa.sa_handler = cleanup;
sa.sa_flags = 0;
if (sigemptyset(&sa.sa_mask)) {
ERROR("sigemptyset failed");
anyfail();
}
CATCH_SIG(SIGINT);
CATCH_SIG(SIGQUIT);
CATCH_SIG(SIGTERM);
if (sbrk(2 * pagesize - ((ulong) sbrk(0) & (pagesize - 1))) ==
(char *)-1) {
CLEANERROR("couldn't round up brk");
anyfail();
}
if ((mmapaddr = sbrk(0)) == (caddr_t) - 1) {
CLEANERROR("couldn't find top of brk");
anyfail();
}
/* Write a page of garbage into the file, so we can mmap it without
* asking for PROT_WRITE.
*/
for (i = pagesize; i; i--)
*(mmapaddr - i) = 'a';
if (write(fd, (char *)mmapaddr - pagesize, pagesize) != pagesize) {
CLEANERROR("write failed");
anyfail();
}
if (mmap(mmapaddr, pagesize, PROT_NONE,
MAP_FIXED | MAP_PRIVATE | MAP_FILE, fd, 0) != mmapaddr) {
CLEANERROR("couldn't mmap file");
anyfail();
}
/*
* Since the file is mmapped, mmreg_new and uiomove_phys handle all
* I/O
*/
if (lseek(fd, 0, SEEK_SET) != 0) {
CLEANERROR("lseek failed");
anyfail();
}
if (read(fd, (char *)mmapaddr, pagesize) != -1) {
CLEANERROR("read succeded");
anyfail();
}
if (errno != EFAULT) {
CLEANERROR("read didn't set errno = EFAULT");
anyfail();
}
if (write(fd, (char *)mmapaddr, pagesize) != -1) {
CLEANERROR("write succeded");
anyfail();
}
if (errno != EFAULT) {
CLEANERROR("write didn't set errno = EFAULT");
anyfail();
}
if (close(fd) == -1) {
CLEANERROR("close failed");
anyfail();
}
if (munmap(mmapaddr, pagesize) == -1) {
CLEANERROR("munmap failed");
anyfail();
}
if (unlink(tmpname) == -1) {
ERROR("unlink failed");
anyfail();
}
(void)time(&t);
// (void)printf("%s: Finished %s", argv[0], ctime(&t));
ok_exit(); /* LTP Port */
tst_exit();
}
/***** LTP Port *****/
void ok_exit(void)
{
tst_resm(TPASS, "Test passed\n");
tst_rmdir();
tst_exit();
}
int anyfail(void)
{
tst_brkm(TFAIL, tst_rmdir, "Test failed");
}
/***** ** ** *****/