/* IBM Corporation */
/* 01/02/2003 Port to LTP avenkat@us.ibm.com */
/* 06/30/2001 Port to Linux nsharoff@us.ibm.com */
/*
* 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
*/
#define _GNU_SOURCE 1
#include <stdio.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <limits.h>
/***** LTP Port *****/
#include "test.h"
#define FAILED 0
#define PASSED 1
int local_flag = PASSED;
char *TCID = "mmapstress10";
FILE *temp;
int TST_TOTAL = 1;
int anyfail();
void ok_exit();
/***** ** ** *****/
/*
* This test stresses mmaps, specifically the code dealing with
* mapping of fragments. It forks a specified number of children,
* all of whom mmap the same file, make a given number of accesses
* to random pages in the map (reading & writing and comparing data).
* Then the child exits and the parent forks another to take its place.
* Each time a child is forked, it stats the file and maps the full
* length of the file. Meanwhile, another child is forked which
* continually writes to the file. It loops writing some bytes (default
* 20), then sleeps some seconds (default 1). This causes the file
* to gradually grow, crossing fragment boundaries, etc.
* Then it forks yet *another* child who maps the file in extend
* mode, just to check out interaction. (Because this will cause
* 0 padding at end of file, children can't test as exactly as in tmmap -
* have to check for zero or pattern...)
*
* This program continues to run until it either receives a SIGINT,
* or times out (if a timeout value is specified). When either of
* these things happens, it cleans up its kids, then checks the
* file to make sure it has the correct data.
*
* usage:
* mmapstress10 -p nprocs [-t minutes -w nbytes -s secs -f filesize
* -S sparseoffset -r -o -m -l -d]
* where:
* -p nprocs - specifies the number of mapping children
* to create. (nprocs + 1 children actually
* get created, since one is the writer child)
* -t minutes - specifies minutes to run. If not specified,
* default is to run forever until a SIGINT
* is received.
* -w nbytes - specifies number of bytes for writer process
* to write at a time (i.e. between sleeps).
* defaults to GROWSIZE bytes.
* -s secs - specifies number of seconds for writer process
* to sleep between writes. Defaults to
* SLEEPTIME seconds.
* -f filesize - initial filesize (defaults to FILESIZE)
* -S sparseoffset - when non-zero, causes a sparse area to
* be left before the data, meaning that the
* actual initial file size is sparseoffset +
* filesize. Useful for testing large files.
* (default is 0).
* -r - randomize number of pages map children check.
* (random % MAXLOOPS). If not specified, each
* child checks MAXLOOPS pages.
* -o - randomize offset of file to map. (default is 0)
* -m - do random msync/fsyncs as well
* -l - if set, the output file is not removed on
* program exit.
* -d - enable debug outputd
*
* Compile with -DLARGE_FILE to enable file sizes > 2 GB.
*/
#define MAXLOOPS 500 /* max pages for map children to write */
#define GROWSIZE 20 /* # bytes to write per write call */
#define SLEEPTIME 1 /* # secs to sleep between writes */
#define FILESIZE 4096 /* initial filesize set up by parent */
#ifdef roundup
#undef roundup
#endif
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
#define min(x, y) (((x) < (y)) ? (x) : (y))
#define SIZE_MAX UINT_MAX
extern time_t time(time_t *);
extern char *ctime(const time_t *);
extern void *malloc(size_t);
extern void exit(int);
extern long lrand48(void);
extern void srand(unsigned);
extern void srand48(long);
extern int rand(void);
extern int atoi(const char *);
char *usage =
"-p nprocs [-t minutes -w nbytes -s secs -f fsize -S sparseoffset -r -o -m -l -d]";
typedef unsigned char uchar_t; //Ananda 12/17/02
void child_mapper(char *file, unsigned procno, unsigned nprocs);
void child_writer(char *file, uchar_t * buf);
int fileokay(char *file, uchar_t * expbuf);
unsigned int initrand(void);
void finish(int sig);
void clean_up_file(int sig);
int finished = 0;
int leavefile = 0;
int debug = 0;
int growsize = GROWSIZE;
int sleeptime = SLEEPTIME;
#ifdef LARGE_FILE
off64_t filesize = FILESIZE;
off64_t sparseoffset = 0;
#else /* LARGE_FILE */
off_t filesize = FILESIZE;
off_t sparseoffset = 0;
#endif /* LARGE_FILE */
unsigned randloops = 0;
unsigned dosync = 0;
unsigned do_offset = 0;
unsigned pattern = 0;
static const char *filename = "mmapstress10.out";
void clean_mapper(int sig);
void clean_writer(int sig);
int fd_mapper = 0;
caddr_t maddr_mapper;
size_t mapsize_mapper;
int fd_writer = 0;
int main(int argc, char *argv[])
{
char *progname;
int fd;
int c;
extern char *optarg;
unsigned nprocs = 0;
unsigned procno;
pid_t *pidarray = NULL;
pid_t pid;
pid_t wr_pid = 0;
uchar_t *buf = NULL;
unsigned int seed;
int pagesize = sysconf(_SC_PAGE_SIZE);
float alarmtime = 0;
struct sigaction sa;
unsigned i;
int write_cnt;
uchar_t data;
int no_prob = 0;
int wait_stat;
time_t t;
#ifdef LARGE_FILE
off64_t bytes_left;
#else /* LARGE_FILE */
off_t bytes_left;
#endif /* LARGE_FILE */
progname = *argv;
tst_tmpdir();
if (argc < 2) {
(void)fprintf(stderr, "usage: %s %s\n", progname, usage);
exit(1);
}
while ((c = getopt(argc, argv, "S:omdlrf:p:t:w:s:")) != -1) {
switch (c) {
case 'd':
debug = 1;
break;
case 't':
alarmtime = atof(optarg) * 60;
break;
case 'p':
nprocs = atoi(optarg);
break;
case 'l':
leavefile = 1;
break;
case 's':
sleeptime = atoi(optarg);
if (sleeptime < 0) {
(void)fprintf(stderr, "error: negative "
"sleeptime\n");
anyfail();
}
break;
case 'w':
growsize = atoi(optarg);
if (growsize < 0) {
(void)fprintf(stderr, "error: negative write "
"size\n");
anyfail();
}
break;
case 'f':
#ifdef LARGE_FILE
filesize = atoll(optarg);
#else /* LARGE_FILE */
filesize = atoi(optarg);
#endif /* LARGE_FILE */
if (filesize < 0) {
(void)fprintf(stderr, "error: negative "
"filesize\n");
anyfail();
}
break;
case 'r':
randloops = 1;
break;
case 'm':
dosync = 1;
break;
case 'o':
do_offset = 1;
break;
case 'S':
#ifdef LARGE_FILE
sparseoffset = atoll(optarg);
#else /* LARGE_FILE */
sparseoffset = atoi(optarg);
#endif /* LARGE_FILE */
if (sparseoffset % pagesize != 0) {
fprintf(stderr,
"sparseoffset must be pagesize multiple\n");
anyfail();
}
break;
default:
(void)fprintf(stderr, "usage: %s %s\n", progname,
usage);
anyfail();
}
}
if (nprocs > 255) {
(void)fprintf(stderr, "invalid nprocs %d - (range 0-255)\n",
nprocs);
anyfail();
}
(void)time(&t);
seed = initrand();
pattern = seed & 0xff;
if (debug) {
#ifdef LARGE_FILE
(void)printf("creating file <%s> with %Ld bytes, pattern %d\n",
filename, filesize, pattern);
#else /* LARGE_FILE */
(void)printf("creating file <%s> with %ld bytes, pattern %d\n",
filename, filesize, pattern);
#endif /* LARGE_FILE */
if (alarmtime)
(void)printf("running for %f minutes\n",
alarmtime / 60);
else
(void)printf("running with no time limit\n");
}
/*
* Plan for death by signal. User may have specified
* a time limit, in which case set an alarm and catch SIGALRM.
* Also catch and cleanup with SIGINT, SIGQUIT, and SIGTERM.
*/
sa.sa_handler = finish;
sa.sa_flags = 0;
if (sigemptyset(&sa.sa_mask)) {
perror("sigempty error");
goto cleanup;
}
if (sigaction(SIGINT, &sa, 0) == -1) {
perror("sigaction error SIGINT");
goto cleanup;
}
if (alarmtime) {
if (sigaction(SIGALRM, &sa, 0) == -1) {
perror("sigaction error");
goto cleanup;
}
(void)alarm(alarmtime);
}
/* If we get a SIGQUIT or SIGTERM, clean up and exit immediately. */
sa.sa_handler = clean_up_file;
if (sigaction(SIGQUIT, &sa, 0) == -1) {
perror("sigaction error SIGQUIT");
goto cleanup;
}
if (sigaction(SIGTERM, &sa, 0) == -1) {
perror("sigaction error SIGTERM");
goto cleanup;
}
#ifdef LARGE_FILE
if ((fd = open64(filename, O_CREAT | O_TRUNC | O_RDWR, 0664)) == -1) {
#else /* LARGE_FILE */
if ((fd = open(filename, O_CREAT | O_TRUNC | O_RDWR, 0664)) == -1) {
#endif /* LARGE_FILE */
perror("open error");
anyfail();
}
if ((buf = malloc(pagesize + growsize)) == NULL
|| (pidarray = malloc(nprocs * sizeof(pid_t))) == NULL) {
perror("malloc error");
anyfail();
}
for (i = 0; i < nprocs; i++)
*(pidarray + i) = 0;
for (i = 0, data = 0; i < pagesize; i++) {
*(buf + i) = (data + pattern) & 0xff;
if (++data == nprocs)
data = 0;
}
for (data = 0; i < pagesize + growsize; i++) {
*(buf + i) = (data + pattern) & 0xff;
if (++data == nprocs)
data = 0;
}
#ifdef LARGE_FILE
if (lseek64(fd, sparseoffset, SEEK_SET) < 0) {
#else /* LARGE_FILE */
if (lseek(fd, sparseoffset, SEEK_SET) < 0) {
#endif /* LARGE_FILE */
perror("lseek");
anyfail();
}
for (bytes_left = filesize; bytes_left; bytes_left -= c) {
write_cnt = min(pagesize, bytes_left);
if ((c = write(fd, (char *)buf, write_cnt)) != write_cnt) {
if (c == -1) {
perror("write error");
} else {
(void)fprintf(stderr, "write: wrote %d of %d "
"bytes\n", c, write_cnt);
}
(void)close(fd);
(void)unlink(filename);
anyfail();
}
}
(void)close(fd);
/*
* Fork off mmap children.
*/
for (procno = 0; procno < nprocs; procno++) {
switch (pid = fork()) {
case -1:
perror("fork error");
goto cleanup;
case 0:
child_mapper(filename, procno, nprocs);
exit(0);
default:
pidarray[procno] = pid;
}
}
/*
* Now fork off an additional process to continually
* write to (and grow) the file.
*/
if ((wr_pid = fork()) == -1) {
perror("fork error");
goto cleanup;
} else if (wr_pid == 0) { /* child */
child_writer(filename, buf);
exit(0);
}
/*
* Now wait for children and refork them as needed.
*/
while (!finished) {
pid = wait(&wait_stat);
/*
* Block signals while processing child exit.
*/
if (sighold(SIGALRM) || sighold(SIGINT)) {
perror("sighold error");
goto cleanup;
}
if (pid != -1) {
/*
* Check exit status, then refork with the
* appropriate procno.
*/
if (!WIFEXITED(wait_stat)
|| WEXITSTATUS(wait_stat) != 0) {
(void)fprintf(stderr, "child exit with err "
"<x%x>\n", wait_stat);
goto cleanup;
}
for (i = 0; i < nprocs; i++)
if (pid == pidarray[i])
break;
if (i == nprocs) {
if (pid == wr_pid) {
(void)fprintf(stderr,
"writer child unexpected exit <x%x>\n",
wait_stat);
wr_pid = 0;
} else
(void)fprintf(stderr, "unknown child "
"pid %d, <x%x>\n",
pid, wait_stat);
goto cleanup;
}
if ((pid = fork()) == -1) {
perror("fork error");
pidarray[i] = 0;
goto cleanup;
} else if (pid == 0) { /* child */
child_mapper(filename, i, nprocs);
exit(0);
} else
pidarray[i] = pid;
} else {
/*
* wait returned an error. If EINTR, then
* normal finish, else it's an unexpected
* error...
*/
if (errno != EINTR || !finished) {
perror("unexpected wait error");
goto cleanup;
}
}
if (sigrelse(SIGALRM) || sigrelse(SIGINT)) {
perror("sigrelse error");
goto cleanup;
}
}
/*
* Finished! Check the file for sanity, then kill all
* the children and done!.
*/
(void)alarm(0);
no_prob = 1;
cleanup:
for (i = 0; i < nprocs; i++)
(void)kill(pidarray[i], SIGUSR1);
(void)kill(wr_pid, SIGUSR1);
while (wait(&wait_stat) != -1 || errno != ECHILD)
continue;
if (no_prob) { /* only check file if no errors */
if (!fileokay(filename, buf)) {
(void)fprintf(stderr, "file data incorrect!\n");
(void)printf(" leaving file <%s>\n", filename);
anyfail();
} else {
(void)printf("file data okay\n");
if (!leavefile)
(void)unlink(filename);
}
} else
(void)printf(" leaving file <%s>\n", filename);
(void)time(&t);
// (void)printf("%s: Finished %s", argv[0], ctime(&t)); LTP Port
ok_exit();
tst_exit();
}
/*
* Child process that reads/writes map. The child stats the file
* to determine the size, maps the size of the file, then reads/writes
* its own locations on random pages of the map (its locations being
* determined based on nprocs & procno). After a specific number of
* iterations, it exits.
*/
void child_mapper(char *file, unsigned procno, unsigned nprocs)
{
#ifdef LARGE_FILE
struct stat64 statbuf;
off64_t filesize;
off64_t offset;
#else /* LARGE_FILE */
struct stat statbuf;
off_t filesize;
off_t offset;
#endif /* LARGE_FILE */
size_t validsize;
caddr_t paddr;
int pagesize = sysconf(_SC_PAGE_SIZE);
unsigned randpage;
unsigned int seed;
unsigned loopcnt;
unsigned nloops;
unsigned mappages;
unsigned mapflags;
unsigned i;
struct sigaction sa_mapper;
mapflags = MAP_SHARED;
seed = initrand(); /* initialize random seed */
sa_mapper.sa_handler = clean_mapper;
sa_mapper.sa_flags = 0;
if (sigemptyset(&sa_mapper.sa_mask)) {
perror("sigempty error");
anyfail();
}
if (sigaction(SIGUSR1, &sa_mapper, 0) == -1) {
perror("sigaction error SIGUSR1");
anyfail();
}
#ifdef LARGE_FILE
if ((fd_mapper = open64(file, O_RDWR)) == -1) {
#else /* LARGE_FILE */
if ((fd_mapper = open(file, O_RDWR)) == -1) {
#endif /* LARGE_FILE */
perror("open error");
anyfail();
}
#ifdef LARGE_FILE
if (fstat64(fd_mapper, &statbuf) == -1) {
#else /* LARGE_FILE */
if (fstat(fd_mapper, &statbuf) == -1) {
#endif /* LARGE_FILE */
perror("stat error");
anyfail();
}
filesize = statbuf.st_size;
if (statbuf.st_size - sparseoffset > SIZE_MAX) {
fprintf(stderr, "size_t overflow when setting up map\n");
anyfail();
}
mapsize_mapper = (size_t) (statbuf.st_size - sparseoffset);
mappages = roundup(mapsize_mapper, pagesize) / pagesize;
offset = sparseoffset;
if (do_offset) {
int pageoffset = lrand48() % mappages;
int byteoffset = pageoffset * pagesize;
offset += byteoffset;
mapsize_mapper -= byteoffset;
mappages -= pageoffset;
}
#ifdef LARGE_FILE
if ((maddr_mapper = mmap64(0, mapsize_mapper, PROT_READ | PROT_WRITE,
mapflags, fd_mapper,
offset)) == (caddr_t) - 1) {
#else /* LARGE_FILE */
if ((maddr_mapper = mmap(0, mapsize_mapper, PROT_READ | PROT_WRITE,
mapflags, fd_mapper,
offset)) == (caddr_t) - 1) {
#endif /* LARGE_FILE */
perror("mmap error");
anyfail();
}
(void)close(fd_mapper);
nloops = (randloops) ? (lrand48() % MAXLOOPS) : MAXLOOPS;
if (debug) {
#ifdef LARGE_FILE
(void)printf("child %d (pid %ld): seed %d, fsize %Ld, "
"mapsize %d, off %Ld, loop %d\n",
procno, getpid(), seed, filesize, mapsize_mapper,
offset / pagesize, nloops);
#else /* LARGE_FILE */
(void)printf("child %d (pid %d): seed %d, fsize %ld, "
"mapsize %ld, off %ld, loop %d\n",
procno, getpid(), seed, filesize,
(long)mapsize_mapper, offset / pagesize, nloops);
#endif /* LARGE_FILE */
}
/*
* Now loop read/writing random pages.
*/
for (loopcnt = 0; loopcnt < nloops; loopcnt++) {
randpage = lrand48() % mappages;
paddr = maddr_mapper + (randpage * pagesize); /* page address */
if (randpage < mappages - 1 || !(mapsize_mapper % pagesize))
validsize = pagesize;
else
validsize = mapsize_mapper % pagesize;
/*
* Because one child is mapping file in extend mode,
* it may be padded with zeros at end. So we can't
* do an exact check -- accept known pattern OR zeros.
*/
for (i = procno; i < validsize; i += nprocs) {
if (*((unsigned char *)(paddr + i))
!= ((procno + pattern) & 0xff)
&& *((unsigned char *)(paddr + i)) != 0) {
(void)fprintf(stderr, "child %d: invalid data "
"<x%x>", procno,
*((unsigned char *)(paddr + i)));
(void)fprintf(stderr,
" at pg %d off %d, exp "
"<x%x>\n", randpage, i,
(procno + pattern) & 0xff);
anyfail();
}
/*
* Now write it.
*/
*(paddr + i) = (procno + pattern) & 0xff;
}
}
if (dosync) {
/*
* Exercise msync() as well!
*/
randpage = lrand48() % mappages;
paddr = maddr_mapper + (randpage * pagesize); /* page address */
if (msync(paddr, (mappages - randpage) * pagesize,
MS_SYNC) == -1) {
perror("msync error");
anyfail();
}
}
if (munmap(maddr_mapper, mapsize_mapper) == -1) {
perror("munmap failed");
anyfail();
}
exit(0);
}
/*
* child_writer
* The child process that continually (and slowly!!) grows
* the file. The purpose of this is to exercise the code
* supporting mapping of fragments. The map children are
* constantly reforking and will pick up the map changes, etc.
* This process executes until signalled (i.e. has no exit!)
* unless error.
*/
void child_writer(char *file, uchar_t * buf)
{ /* buf already set up in main */
struct sigaction sa_writer;
sa_writer.sa_handler = clean_writer;
sa_writer.sa_flags = 0;
if (sigemptyset(&sa_writer.sa_mask)) {
perror("sigempty error");
anyfail();
}
if (sigaction(SIGUSR1, &sa_writer, 0) == -1) {
perror("sigaction error SIGUSR1");
anyfail();
}
#ifdef LARGE_FILE
struct stat64 statbuf;
off64_t off;
#else /* LARGE_FILE */
struct stat statbuf;
off_t off;
#endif /* LARGE_FILE */
int pagesize = sysconf(_SC_PAGE_SIZE);
uchar_t *p;
int cnt;
#ifdef LARGE_FILE
if ((fd_writer = open64(file, O_RDWR)) == -1) {
#else /* LARGE_FILE */
if ((fd_writer = open(file, O_RDWR)) == -1) {
#endif /* LARGE_FILE */
perror("open error");
anyfail();
}
#ifdef LARGE_FILE
if ((off = lseek64(fd_writer, 0, SEEK_END)) == -1) {
#else /* LARGE_FILE */
if ((off = lseek(fd_writer, 0, SEEK_END)) == -1) {
#endif /* LARGE_FILE */
perror("lseek error");
anyfail();
}
for (;;) {
#ifdef LARGE_FILE
if (fstat64(fd_writer, &statbuf) == -1) {
#else /* LARGE_FILE */
if (fstat(fd_writer, &statbuf) == -1) {
#endif /* LARGE_FILE */
perror("fstat error");
anyfail();
}
#ifdef LARGE_FILE
if (debug)
(void)printf("writer %d bytes at off %Ld, size %Ld\n",
growsize, off, statbuf.st_size);
#else /* LARGE_FILE */
if (debug)
(void)printf("writer %d bytes at off %ld, size %ld\n",
growsize, off, statbuf.st_size);
#endif /* LARGE_FILE */
/*
* Write some number of bytes, then sleep some
* number of seconds...
* Need to keep track of our offset so write the
* right bytes.
*/
p = buf + (off % pagesize);
if ((cnt = write(fd_writer, p, growsize)) != growsize) {
if (cnt == -1)
perror("write error");
else
(void)fprintf(stderr, "wrote %d of %d bytes\n",
cnt, growsize);
anyfail();
}
off += growsize;
(void)sleep(sleeptime);
if (dosync) {
if (fsync(fd_writer) == -1) {
perror("fsync error");
anyfail();
}
}
}
close(fd_writer);
}
/*
* Make sure file has all the correct data.
*/
int fileokay(char *file, uchar_t * expbuf)
{
#ifdef LARGE_FILE
struct stat64 statbuf;
#else /* LARGE_FILE */
struct stat statbuf;
#endif /* LARGE_FILE */
size_t mapsize;
uchar_t *readbuf;
unsigned mappages;
unsigned pagesize = sysconf(_SC_PAGE_SIZE);
int fd;
int cnt;
unsigned i, j;
#ifdef LARGE_FILE
if ((fd = open64(file, O_RDONLY)) == -1) {
#else /* LARGE_FILE */
if ((fd = open(file, O_RDONLY)) == -1) {
#endif /* LARGE_FILE */
perror("open error");
anyfail();
}
#ifdef LARGE_FILE
if (fstat64(fd, &statbuf) == -1) {
#else /* LARGE_FILE */
if (fstat(fd, &statbuf) == -1) {
#endif /* LARGE_FILE */
perror("stat error");
anyfail();
}
#ifdef LARGE_FILE
if (lseek64(fd, sparseoffset, SEEK_SET) < 0) {
#else /* LARGE_FILE */
if (lseek(fd, sparseoffset, SEEK_SET) < 0) {
#endif /* LARGE_FILE */
perror("lseek");
exit(1);
}
readbuf = malloc(pagesize);
if (statbuf.st_size - sparseoffset > SIZE_MAX) {
fprintf(stderr, "size_t overflow when setting up map\n");
exit(1);
}
mapsize = (size_t) (statbuf.st_size - sparseoffset);
mappages = roundup(mapsize, pagesize) / pagesize;
for (i = 0; i < mappages; i++) {
cnt = read(fd, (char *)readbuf, pagesize);
if (cnt == -1) {
perror("read error");
close(fd);
return 0;
} else if (cnt != pagesize) {
/*
* Okay if at last page in file...
*/
if ((i * pagesize) + cnt != mapsize) {
(void)fprintf(stderr, "read %d of %ld bytes\n",
(i * pagesize) + cnt,
(long)mapsize);
close(fd);
return 0;
}
}
/*
* Compare read bytes of data.
* May have zeros from map extend...
*/
for (j = 0; j < cnt; j++) {
if (expbuf[j] != readbuf[j] && readbuf[j] != 0) {
(void)fprintf(stderr,
"read bad data: exp %c got %c",
expbuf[j], readbuf[j]);
#ifdef LARGE_FILE
(void)fprintf(stderr, ", pg %d off %d, "
"(fsize %Ld)\n", i, j,
statbuf.st_size);
#else /* LARGE_FILE */
(void)fprintf(stderr, ", pg %d off %d, "
"(fsize %ld)\n", i, j,
statbuf.st_size);
#endif /* LARGE_FILE */
close(fd);
return 0;
}
}
}
close(fd);
return 1;
}
/*ARGSUSED*/ void finish(int sig)
{
finished++;
/* finish nicely and check the file contents */
}
/*ARGSUSED*/ void clean_up_file(int sig)
{
if (!leavefile)
(void)unlink(filename);
_exit(1);
}
void clean_mapper(int sig)
{
if (fd_mapper)
close(fd_mapper);
munmap(maddr_mapper, mapsize_mapper);
_exit(0);
}
void clean_writer(int sig)
{
if (fd_writer)
close(fd_writer);
_exit(0);
}
unsigned int initrand(void)
{
unsigned int seed;
/*
* Initialize random seed... Got this from a test written
* by scooter:
* Use srand/rand to diffuse the information from the
* time and pid. If you start several processes, then
* the time and pid information don't provide much
* variation.
*/
srand((unsigned int)getpid());
seed = rand();
srand((unsigned int)time(NULL));
seed = (seed ^ rand()) % 100000;
srand48((long int)seed);
return (seed);
}
/***** 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\n");
}
/***** ** ** *****/