forked from Imagelibrary/rtems
9dffa384e1
The set block size must synchronize and purge the disk to avoid an inconsistent cache state and data corruption. The synchronization is optional depending on the new sync parameter. In some contexts a synchronization must not be performed, e.g. during disk creation.
154 lines
3.6 KiB
C
154 lines
3.6 KiB
C
/*
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* Copyright (c) 2012 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Obere Lagerstr. 30
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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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.com/license/LICENSE.
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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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#include "tmacros.h"
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <rtems/ramdisk.h>
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#include <rtems/bdbuf.h>
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#define ASSERT_SC(sc) rtems_test_assert((sc) == RTEMS_SUCCESSFUL)
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static void test(void)
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{
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static const char device [] = "/dev/rda";
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rtems_status_code sc;
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int fd;
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int rv;
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rtems_disk_device *dd;
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ramdisk *rd;
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unsigned char buf [8];
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uint32_t media_block_size = sizeof(buf [0]);
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rtems_blkdev_bnum media_block_count = sizeof(buf) / sizeof(buf [0]);
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rtems_blkdev_bnum media_size = media_block_size * media_block_count;
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rtems_bdbuf_buffer *media_bd [media_block_count];
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rtems_bdbuf_buffer *large_bd;
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rtems_blkdev_bnum i;
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sc = rtems_disk_io_initialize();
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ASSERT_SC(sc);
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for (i = 0; i < media_block_count; ++i) {
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buf [i] = i;
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}
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rd = ramdisk_allocate(buf, media_block_size, media_block_count, false);
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rtems_test_assert(rd != NULL);
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sc = rtems_blkdev_create(
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device,
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media_block_size,
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media_block_count,
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ramdisk_ioctl,
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rd
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);
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ASSERT_SC(sc);
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fd = open(device, O_RDWR);
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rtems_test_assert(fd >= 0);
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rv = rtems_disk_fd_get_disk_device(fd, &dd);
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rtems_test_assert(rv == 0);
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for (i = 0; i < media_block_count; ++i) {
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sc = rtems_bdbuf_read(dd, i, &media_bd [i]);
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ASSERT_SC(sc);
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rtems_test_assert(media_bd [i]->buffer [0] == buf [i]);
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}
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for (i = 0; i < media_block_count; ++i) {
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media_bd [i]->buffer [0] += media_block_count;
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sc = rtems_bdbuf_release_modified(media_bd [i]);
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ASSERT_SC(sc);
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}
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for (i = 0; i < media_block_count; i += 2) {
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sc = rtems_bdbuf_read(dd, i, &media_bd [i]);
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ASSERT_SC(sc);
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rtems_test_assert(media_bd [i]->buffer [0] == buf [i] + media_block_count);
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}
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sc = rtems_bdbuf_set_block_size(dd, media_size, true);
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ASSERT_SC(sc);
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for (i = 0; i < media_block_count; i += 2) {
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rtems_test_assert(media_bd [i]->state == RTEMS_BDBUF_STATE_ACCESS_PURGED);
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rtems_test_assert(media_bd [i + 1]->state == RTEMS_BDBUF_STATE_FREE);
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rtems_test_assert(media_bd [i]->buffer [0] == buf [i] + media_block_count);
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rtems_test_assert(media_bd [i + 1]->buffer [0] == buf [i + 1]);
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sc = rtems_bdbuf_release(media_bd [i]);
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ASSERT_SC(sc);
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}
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sc = rtems_bdbuf_read(dd, 0, &large_bd);
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ASSERT_SC(sc);
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rtems_test_assert(memcmp(buf, large_bd->buffer, media_size) == 0);
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sc = rtems_bdbuf_release(large_bd);
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ASSERT_SC(sc);
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rv = close(fd);
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rtems_test_assert(rv == 0);
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rv = unlink(device);
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rtems_test_assert(rv == 0);
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}
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static void Init(rtems_task_argument arg)
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{
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puts("\n\n*** TEST BLOCK 16 ***");
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test();
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puts("*** END OF TEST BLOCK 16 ***");
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rtems_test_exit(0);
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}
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#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
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#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
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#define CONFIGURE_APPLICATION_NEEDS_LIBBLOCK
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#define CONFIGURE_BDBUF_BUFFER_MIN_SIZE 1
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#define CONFIGURE_BDBUF_BUFFER_MAX_SIZE 8
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#define CONFIGURE_BDBUF_CACHE_MEMORY_SIZE 8
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#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM
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#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 4
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#define CONFIGURE_MAXIMUM_TASKS 1
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#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
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#define CONFIGURE_INIT
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#include <rtems/confdefs.h>
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