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/*
* Copyright (c) 2016 Gedare Bloom.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
/*
* From http://pubs.opengroup.org/onlinepubs/9699919799/functions/shm_open.html
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define CONFIGURE_INIT
#include "system.h"
#include "pritime.h"
#include <sys/mman.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
const char rtems_test_name[] = "PSX SHM01";
#define MAX_LEN 10000
struct region { /* Defines "structure" of shared memory */
int len;
char buf[MAX_LEN];
};
void *POSIX_Init(
void *argument
)
{
struct region *p;
int fd;
int err;
char *name = "/shm";
TEST_BEGIN();
puts( "Init: shm_open" );
fd = shm_open( name, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR );
if ( fd == -1 ) {
printf ( "Error: %s\n", strerror(errno) );
rtems_test_assert( fd != -1 );
}
puts( "Init: ftruncate" );
err = ftruncate( fd, sizeof( struct region ) );
if ( err == -1 ) {
printf ( "Error: %s\n", strerror(errno) );
rtems_test_assert( err != -1 );
}
puts( "Init: mmap" );
p = mmap(
NULL,
sizeof( struct region ),
PROT_READ | PROT_WRITE, MAP_SHARED,
fd,
0
);
if ( p != MAP_FAILED ) {
puts( "Init: write to mapped region" );
p->len = MAX_LEN;
puts( "Init: munmap" );
err = munmap( p, sizeof( struct region ) );
if ( err == -1 ) {
printf ( "Error: %s\n", strerror(errno) );
rtems_test_assert( err != -1 );
}
} else {
puts( "Init: FIXME: mmap() not supported" );
}
puts( "Init: close" );
err = close( fd );
if ( err == -1 ) {
printf ( "Error: %s\n", strerror(errno) );
rtems_test_assert( err != -1 );
}
TEST_END();
rtems_test_exit(0);
return 0;
}
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