int
rtems_rfs_fs_close (rtems_rfs_file_system* fs)
{
int group;
if (rtems_rfs_trace (RTEMS_RFS_TRACE_CLOSE))
printf ("rtems-rfs: close\n");
for (group = 0; group < fs->group_count; group++)
rtems_rfs_group_close (fs, &fs->groups[group]);
rtems_rfs_buffer_close (fs);
free (fs);
return 0;
}
int
rtems_rfs_fs_open (const char* name,
void* user,
uint32_t flags,
uint32_t max_held_buffers,
rtems_rfs_file_system** fs)
{
#if UNUSED
rtems_rfs_group* group;
size_t group_base;
#endif
rtems_rfs_inode_handle inode;
uint16_t mode;
int rc;
if (rtems_rfs_trace (RTEMS_RFS_TRACE_OPEN))
printf ("rtems-rfs: open: %s\n", name);
*fs = malloc (sizeof (rtems_rfs_file_system));
if (!*fs)
{
if (rtems_rfs_trace (RTEMS_RFS_TRACE_OPEN))
printf ("rtems-rfs: open: no memory for file system data\n");
errno = ENOMEM;
return -1;
}
memset (*fs, 0, sizeof (rtems_rfs_file_system));
(*fs)->user = user;
rtems_chain_initialize_empty (&(*fs)->buffers);
rtems_chain_initialize_empty (&(*fs)->release);
rtems_chain_initialize_empty (&(*fs)->release_modified);
rtems_chain_initialize_empty (&(*fs)->file_shares);
(*fs)->max_held_buffers = max_held_buffers;
(*fs)->buffers_count = 0;
(*fs)->release_count = 0;
(*fs)->release_modified_count = 0;
(*fs)->flags = flags;
#if UNUSED
group = &(*fs)->groups[0];
group_base = 0;
#endif
/*
* Open the buffer interface.
*/
rc = rtems_rfs_buffer_open (name, *fs);
if (rc > 0)
{
free (*fs);
if (rtems_rfs_trace (RTEMS_RFS_TRACE_OPEN))
printf ("rtems-rfs: open: buffer open failed: %d: %s\n",
rc, strerror (rc));
errno = rc;
return -1;
}
rc = rtems_rfs_fs_read_superblock (*fs);
if (rc > 0)
{
rtems_rfs_buffer_close (*fs);
free (*fs);
if (rtems_rfs_trace (RTEMS_RFS_TRACE_OPEN))
printf ("rtems-rfs: open: reading superblock: %d: %s\n",
rc, strerror (rc));
errno = rc;
return -1;
}
rc = rtems_rfs_inode_open (*fs, RTEMS_RFS_ROOT_INO, &inode, true);
if (rc > 0)
{
rtems_rfs_buffer_close (*fs);
free (*fs);
if (rtems_rfs_trace (RTEMS_RFS_TRACE_OPEN))
printf ("rtems-rfs: open: reading root inode: %d: %s\n",
rc, strerror (rc));
errno = rc;
return -1;
}
if (((*fs)->flags & RTEMS_RFS_FS_FORCE_OPEN) == 0)
{
mode = rtems_rfs_inode_get_mode (&inode);
if ((mode == 0xffff) || !RTEMS_RFS_S_ISDIR (mode))
{
rtems_rfs_inode_close (*fs, &inode);
rtems_rfs_buffer_close (*fs);
free (*fs);
if (rtems_rfs_trace (RTEMS_RFS_TRACE_OPEN))
printf ("rtems-rfs: open: invalid root inode mode\n");
errno = EIO;
return -1;
}
}
rc = rtems_rfs_inode_close (*fs, &inode);
if (rc > 0)
{
rtems_rfs_buffer_close (*fs);
free (*fs);
if (rtems_rfs_trace (RTEMS_RFS_TRACE_OPEN))
printf ("rtems-rfs: open: closing root inode: %d: %s\n", rc, strerror (rc));
errno = rc;
return -1;
}
errno = 0;
return 0;
}
int
rtems_rfs_format (const char* name, const rtems_rfs_format_config* config)
{
rtems_rfs_file_system fs;
int group;
int rc;
if (config->verbose)
printf ("rtems-rfs: format: %s\n", name);
memset (&fs, 0, sizeof (rtems_rfs_file_system));
rtems_chain_initialize_empty (&fs.buffers);
rtems_chain_initialize_empty (&fs.release);
rtems_chain_initialize_empty (&fs.release_modified);
rtems_chain_initialize_empty (&fs.file_shares);
fs.max_held_buffers = RTEMS_RFS_FS_MAX_HELD_BUFFERS;
fs.release_count = 0;
fs.release_modified_count = 0;
fs.flags = RTEMS_RFS_FS_NO_LOCAL_CACHE;
/*
* Open the buffer interface.
*/
rc = rtems_rfs_buffer_open (name, &fs);
if (rc > 0)
{
printf ("rtems-rfs: format: buffer open failed: %d: %s\n",
rc, strerror (rc));
return -1;
}
/*
* Check the media.
*/
if (rtems_rfs_fs_media_block_size (&fs) == 0)
{
printf ("rtems-rfs: media block is invalid: %" PRIu32 "\n",
rtems_rfs_fs_media_block_size (&fs));
return -1;
}
/*
* Check the configuration data.
*/
if (!rtems_rfs_check_config (&fs, config))
return -1;
if (config->verbose)
{
printf ("rtems-rfs: format: media size = %" PRIu64 "\n",
rtems_rfs_fs_media_size (&fs));
printf ("rtems-rfs: format: media blocks = %" PRIu32 "\n",
rtems_rfs_fs_media_blocks (&fs));
printf ("rtems-rfs: format: media block size = %" PRIu32 "\n",
rtems_rfs_fs_media_block_size (&fs));
printf ("rtems-rfs: format: size = %" PRIu64 "\n",
rtems_rfs_fs_size (&fs));
printf ("rtems-rfs: format: blocks = %zu\n",
rtems_rfs_fs_blocks (&fs));
printf ("rtems-rfs: format: block size = %zu\n",
rtems_rfs_fs_block_size (&fs));
printf ("rtems-rfs: format: bits per block = %u\n",
rtems_rfs_bits_per_block (&fs));
printf ("rtems-rfs: format: inode size = %zu\n", RTEMS_RFS_INODE_SIZE);
printf ("rtems-rfs: format: inodes = %zu (%d.%d%%)\n",
fs.group_inodes * fs.group_count,
rtems_rfs_inode_overhead (&fs) / 10,
rtems_rfs_inode_overhead (&fs) % 10);
printf ("rtems-rfs: format: groups = %u\n", fs.group_count);
printf ("rtems-rfs: format: group blocks = %zu\n", fs.group_blocks);
printf ("rtems-rfs: format: group inodes = %zu\n", fs.group_inodes);
}
rc = rtems_rfs_buffer_setblksize (&fs, rtems_rfs_fs_block_size (&fs));
if (rc > 0)
{
printf ("rtems-rfs: format: setting block size failed: %d: %s\n",
rc, strerror (rc));
return -1;
}
if (!rtems_rfs_write_superblock (&fs))
{
printf ("rtems-rfs: format: superblock write failed\n");
return -1;
}
for (group = 0; group < fs.group_count; group++)
if (!rtems_rfs_write_group (&fs, group,
config->initialise_inodes, config->verbose))
return -1;
if (config->verbose)
printf ("\n");
rc = rtems_rfs_buffer_close (&fs);
if (rc > 0)
{
printf ("rtems-rfs: format: buffer close failed: %d: %s\n",
rc, strerror (rc));
return -1;
}
rc = rtems_rfs_write_root_dir (name);
if (rc > 0)
{
printf ("rtems-rfs: format: writing root dir failed: %d: %s\n",
rc, strerror (rc));
return -1;
}
return 0;
}
