mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
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95 lines
1.8 KiB
C
95 lines
1.8 KiB
C
/*
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* Copyright (c) 2016 Gedare Bloom.
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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/*
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* From http://pubs.opengroup.org/onlinepubs/9699919799/functions/shm_open.html
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#define CONFIGURE_INIT
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#include "system.h"
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#include "pritime.h"
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#include <sys/mman.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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const char rtems_test_name[] = "PSX SHM02";
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#define MAX_LEN 10000
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struct region { /* Defines "structure" of shared memory */
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int len;
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char buf[MAX_LEN];
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};
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void *POSIX_Init(
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void *argument
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)
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{
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struct region *p;
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int fd;
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int err;
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char *name = "/shm";
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TEST_BEGIN();
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puts( "Init: shm_open" );
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fd = shm_open( name, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR );
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if ( fd == -1 ) {
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printf ( "Error: %s\n", strerror(errno) );
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rtems_test_assert( fd != -1 );
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}
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puts( "Init: ftruncate" );
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err = ftruncate( fd, sizeof( struct region ) );
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if ( err == -1 ) {
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printf ( "Error: %s\n", strerror(errno) );
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rtems_test_assert( err != -1 );
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}
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puts( "Init: mmap" );
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p = mmap(
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NULL,
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sizeof( struct region ),
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PROT_READ | PROT_WRITE, MAP_SHARED,
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fd,
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0
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);
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if( p != MAP_FAILED ) {
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puts( "Init: write to mapped region" );
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p->len = MAX_LEN;
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puts( "Init: munmap" );
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err = munmap( p, sizeof( struct region ) );
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if ( err == -1 ) {
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printf ( "Error: %s\n", strerror(errno) );
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rtems_test_assert( err != -1 );
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}
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} else {
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puts( "Init: FIXME: mmap() not supported" );
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}
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puts( "Init: close" );
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err = close( fd );
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if ( err == -1 ) {
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printf ( "Error: %s\n", strerror(errno) );
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rtems_test_assert( err != -1 );
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}
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TEST_END();
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rtems_test_exit(0);
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return 0;
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}
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