int
rtems_rfs_group_usage (rtems_rfs_file_system* fs,
size_t* blocks,
size_t* inodes)
{
int g;
*blocks = 0;
*inodes = 0;
for (g = 0; g < fs->group_count; g++)
{
rtems_rfs_group* group = &fs->groups[g];
*blocks +=
rtems_rfs_bitmap_map_size(&group->block_bitmap) -
rtems_rfs_bitmap_map_free (&group->block_bitmap);
*inodes +=
rtems_rfs_bitmap_map_size (&group->inode_bitmap) -
rtems_rfs_bitmap_map_free (&group->inode_bitmap);
}
if (*blocks > rtems_rfs_fs_blocks (fs))
*blocks = rtems_rfs_fs_blocks (fs);
if (*inodes > rtems_rfs_fs_inodes (fs))
*inodes = rtems_rfs_fs_inodes (fs);
return 0;
}
static int
rtems_rfs_shell_data (rtems_rfs_file_system* fs, int argc, char *argv[])
{
size_t blocks;
size_t inodes;
int bpcent;
int ipcent;
printf ("RFS Filesystem Data\n");
printf (" flags: %08" PRIx32 "\n", fs->flags);
#if 0
printf (" device: %08lx\n", rtems_rfs_fs_device (fs));
#endif
printf (" blocks: %zu\n", rtems_rfs_fs_blocks (fs));
printf (" block size: %zu\n", rtems_rfs_fs_block_size (fs));
printf (" size: %" PRIu64 "\n", rtems_rfs_fs_size (fs));
printf (" media block size: %" PRIu32 "\n", rtems_rfs_fs_media_block_size (fs));
printf (" media size: %" PRIu64 "\n", rtems_rfs_fs_media_size (fs));
printf (" inodes: %" PRIu32 "\n", rtems_rfs_fs_inodes (fs));
printf (" bad blocks: %" PRIu32 "\n", fs->bad_blocks);
printf (" max. name length: %" PRIu32 "\n", rtems_rfs_fs_max_name (fs));
printf (" groups: %d\n", fs->group_count);
printf (" group blocks: %zd\n", fs->group_blocks);
printf (" group inodes: %zd\n", fs->group_inodes);
printf (" inodes per block: %zd\n", fs->inodes_per_block);
printf (" blocks per block: %zd\n", fs->blocks_per_block);
printf (" singly blocks: %zd\n", fs->block_map_singly_blocks);
printf (" doublly blocks: %zd\n", fs->block_map_doubly_blocks);
printf (" max. held buffers: %" PRId32 "\n", fs->max_held_buffers);
rtems_rfs_shell_lock_rfs (fs);
rtems_rfs_group_usage (fs, &blocks, &inodes);
rtems_rfs_shell_unlock_rfs (fs);
bpcent = (blocks * 1000) / rtems_rfs_fs_blocks (fs);
ipcent = (inodes * 1000) / rtems_rfs_fs_inodes (fs);
printf (" blocks used: %zd (%d.%d%%)\n",
blocks, bpcent / 10, bpcent % 10);
printf (" inodes used: %zd (%d.%d%%)\n",
inodes, ipcent / 10, ipcent % 10);
return 0;
}
/**
* Return the file system stat data.
*
* @param pathloc
* @param sb
* @return int
*/
static int
rtems_rfs_rtems_statvfs (const rtems_filesystem_location_info_t* pathloc,
struct statvfs* sb)
{
rtems_rfs_file_system* fs = rtems_rfs_rtems_pathloc_dev (pathloc);
size_t blocks;
size_t inodes;
rtems_rfs_group_usage (fs, &blocks, &inodes);
sb->f_bsize = rtems_rfs_fs_block_size (fs);
sb->f_frsize = rtems_rfs_fs_media_block_size (fs);
sb->f_blocks = rtems_rfs_fs_media_blocks (fs);
sb->f_bfree = rtems_rfs_fs_blocks (fs) - blocks;
sb->f_bavail = sb->f_bfree;
sb->f_files = rtems_rfs_fs_inodes (fs);
sb->f_ffree = rtems_rfs_fs_inodes (fs) - inodes;
sb->f_favail = sb->f_ffree;
sb->f_fsid = RTEMS_RFS_SB_MAGIC;
sb->f_flag = rtems_rfs_fs_flags (fs);
sb->f_namemax = rtems_rfs_fs_max_name (fs);
return 0;
}
int
rtems_rfs_group_bitmap_test (rtems_rfs_file_system* fs,
bool inode,
rtems_rfs_bitmap_bit no,
bool* state)
{
rtems_rfs_bitmap_control* bitmap;
unsigned int group;
rtems_rfs_bitmap_bit bit;
size_t size;
int rc;
if (rtems_rfs_trace (RTEMS_RFS_TRACE_GROUP_BITMAPS))
printf ("rtems-rfs: group-bitmap-test: %s test: %" PRId32 "\n",
inode ? "inode" : "block", no);
if (inode)
{
if ((no < RTEMS_RFS_ROOT_INO) || (no > rtems_rfs_fs_inodes (fs)))
return EINVAL;
no -= RTEMS_RFS_ROOT_INO;
size = fs->group_inodes;
}
else
{
if (no >= rtems_rfs_fs_blocks (fs))
return EINVAL;
size = fs->group_blocks;
}
group = no / size;
bit = (rtems_rfs_bitmap_bit) (no % size);
if (inode)
bitmap = &fs->groups[group].inode_bitmap;
else
bitmap = &fs->groups[group].block_bitmap;
rc = rtems_rfs_bitmap_map_test (bitmap, bit, state);
rtems_rfs_bitmap_release_buffer (fs, bitmap);
return rc;
}
int
rtems_rfs_inode_open (rtems_rfs_file_system* fs,
rtems_rfs_ino ino,
rtems_rfs_inode_handle* handle,
bool load)
{
int group;
int gino;
int index;
int rc;
if (rtems_rfs_trace (RTEMS_RFS_TRACE_INODE_OPEN))
printf ("rtems-rfs: inode-open: ino: %" PRIu32 "\n", ino);
if (ino == RTEMS_RFS_EMPTY_INO)
return EINVAL;
if ((ino - RTEMS_RFS_ROOT_INO) > rtems_rfs_fs_inodes (fs))
return EINVAL;
handle->ino = ino;
handle->node = NULL;
handle->loads = 0;
gino = ino - RTEMS_RFS_ROOT_INO;
group = gino / fs->group_inodes;
gino = gino % fs->group_inodes;
index = (gino / fs->inodes_per_block) + RTEMS_RFS_GROUP_INODE_BLOCK;
handle->offset = gino % fs->inodes_per_block;
handle->block = rtems_rfs_group_block (&fs->groups[group], index);
rc = rtems_rfs_buffer_handle_open (fs, &handle->buffer);
if ((rc == 0) && load)
rc = rtems_rfs_inode_load (fs, handle);
return rc;
}
rtems_rfs_rtems_statvfs (
const rtems_filesystem_location_info_t *__restrict pathloc,
struct statvfs *__restrict sb)
{
rtems_rfs_file_system* fs = rtems_rfs_rtems_pathloc_dev (pathloc);
size_t blocks;
size_t inodes;
rtems_rfs_group_usage (fs, &blocks, &inodes);
sb->f_bsize = rtems_rfs_fs_block_size (fs);
sb->f_frsize = rtems_rfs_fs_media_block_size (fs);
sb->f_blocks = rtems_rfs_fs_media_blocks (fs);
sb->f_bfree = rtems_rfs_fs_blocks (fs) - blocks - 1; /* do not count the superblock */
sb->f_bavail = sb->f_bfree;
sb->f_files = rtems_rfs_fs_inodes (fs);
sb->f_ffree = rtems_rfs_fs_inodes (fs) - inodes;
sb->f_favail = sb->f_ffree;
sb->f_fsid = RTEMS_RFS_SB_MAGIC;
sb->f_flag = rtems_rfs_fs_flags (fs);
sb->f_namemax = rtems_rfs_fs_max_name (fs);
return 0;
}
/**
* Handler table for RFS link nodes
*/
const rtems_filesystem_file_handlers_r rtems_rfs_rtems_link_handlers =
{
.open_h = rtems_filesystem_default_open,
static int
rtems_rfs_shell_dir (rtems_rfs_file_system* fs, int argc, char *argv[])
{
rtems_rfs_buffer_handle buffer;
rtems_rfs_block_no block;
uint8_t* data;
bool state;
int entry;
int b;
int rc;
if (argc <= 1)
{
printf ("error: no block number provided\n");
return 1;
}
block = strtoul (argv[1], 0, 0);
rtems_rfs_shell_lock_rfs (fs);
rc = rtems_rfs_group_bitmap_test (fs, false, block, &state);
if (rc > 0)
{
rtems_rfs_shell_unlock_rfs (fs);
printf ("error: testing block state: block=%" PRIu32 ": (%d) %s\n",
block, rc, strerror (rc));
return 1;
}
printf (" %5" PRIu32 ": block %s\n", block, state ? "allocated" : "free");
rc = rtems_rfs_buffer_handle_open (fs, &buffer);
if (rc > 0)
{
rtems_rfs_shell_unlock_rfs (fs);
printf ("error: opening buffer handle: block=%" PRIu32 ": (%d) %s\n",
block, rc, strerror (rc));
return 1;
}
rc = rtems_rfs_buffer_handle_request (fs, &buffer, block, true);
if (rc > 0)
{
rtems_rfs_buffer_handle_close (fs, &buffer);
rtems_rfs_shell_unlock_rfs (fs);
printf ("error: requesting buffer handle: block=%" PRIu32 ": (%d) %s\n",
block, rc, strerror (rc));
return 1;
}
b = 0;
entry = 1;
data = rtems_rfs_buffer_data (&buffer);
while (b < (rtems_rfs_fs_block_size (fs) - RTEMS_RFS_DIR_ENTRY_SIZE - 1))
{
rtems_rfs_ino eino;
int elength;
int length;
int c;
eino = rtems_rfs_dir_entry_ino (data);
elength = rtems_rfs_dir_entry_length (data);
if (elength == RTEMS_RFS_DIR_ENTRY_EMPTY)
break;
if ((elength < RTEMS_RFS_DIR_ENTRY_SIZE) ||
(elength >= rtems_rfs_fs_max_name (fs)))
{
printf (" %5d: entry length appears corrupt: %d\n", entry, elength);
break;
}
if ((eino < RTEMS_RFS_ROOT_INO) || (eino >= rtems_rfs_fs_inodes (fs)))
{
printf (" %5d: entry ino appears corrupt: ino=%" PRId32 "\n", entry, eino);
break;
}
length = elength - RTEMS_RFS_DIR_ENTRY_SIZE;
printf (" %5d: %04x inode=%-6" PRIu32 " hash=%08" PRIx32 " name[%03u]=",
entry, b,
rtems_rfs_dir_entry_ino (data),
rtems_rfs_dir_entry_hash (data),
length);
if (length > 50)
length = 50;
for (c = 0; c < length; c++)
printf ("%c", data[RTEMS_RFS_DIR_ENTRY_SIZE + c]);
if (length < elength - RTEMS_RFS_DIR_ENTRY_SIZE)
printf ("...");
printf ("\n");
b += elength;
data += elength;
entry++;
}
rc = rtems_rfs_buffer_handle_close (fs, &buffer);
if (rc > 0)
{
rtems_rfs_shell_unlock_rfs (fs);
printf ("error: closing buffer handle: block=%" PRIu32 ": (%d) %s\n",
block, rc, strerror (rc));
return 1;
}
rtems_rfs_shell_unlock_rfs (fs);
return 0;
}
