static rtems_filesystem_node_types_t
rtems_rfs_rtems_node_type_by_inode (rtems_rfs_inode_handle* inode)
{
/*
* Do not return RTEMS_FILESYSTEM_HARD_LINK because this would result in an
* eval link which does not make sense in the case of the RFS file
* system. All directory entries are links to an inode. A link such as a HARD
* link is actually the normal path to a regular file, directory, device
* etc's inode. Links to inodes can be considered "the real" one, yet they
* are all links.
*/
uint16_t mode = rtems_rfs_inode_get_mode (inode);
if (RTEMS_RFS_S_ISDIR (mode))
return RTEMS_FILESYSTEM_DIRECTORY;
else if (RTEMS_RFS_S_ISLNK (mode))
return RTEMS_FILESYSTEM_SYM_LINK;
else if (RTEMS_RFS_S_ISBLK (mode) || RTEMS_RFS_S_ISCHR (mode))
return RTEMS_FILESYSTEM_DEVICE;
else
return RTEMS_FILESYSTEM_MEMORY_FILE;
}
bool
rtems_rfs_rtems_set_handlers (rtems_filesystem_location_info_t* loc,
rtems_rfs_inode_handle* inode)
{
uint16_t mode = rtems_rfs_inode_get_mode (inode);
loc->handlers = NULL;
if (RTEMS_RFS_S_ISDIR (mode))
loc->handlers = rtems_rfs_rtems_handlers (dir);
else if (RTEMS_RFS_S_ISCHR (mode) || RTEMS_RFS_S_ISBLK(mode))
loc->handlers = rtems_rfs_rtems_handlers (device);
else if (RTEMS_RFS_S_ISLNK (mode))
loc->handlers = rtems_rfs_rtems_handlers (link);
else if (RTEMS_RFS_S_ISREG (mode))
loc->handlers = rtems_rfs_rtems_handlers (file);
else
{
printf ("rtems-rfs: mode type unknown: %04x\n", mode);
return false;
}
return true;
}
int
rtems_rfs_inode_create (rtems_rfs_file_system* fs,
rtems_rfs_ino parent,
const char* name,
size_t length,
uint16_t mode,
uint16_t links,
uid_t uid,
gid_t gid,
rtems_rfs_ino* ino)
{
rtems_rfs_inode_handle parent_inode;
rtems_rfs_inode_handle inode;
int rc;
if (rtems_rfs_trace (RTEMS_RFS_TRACE_INODE_CREATE))
{
const char* type = "unknown";
int c;
if (RTEMS_RFS_S_ISDIR (mode))
type = "dir";
else if (RTEMS_RFS_S_ISCHR (mode))
type = "char";
else if (RTEMS_RFS_S_ISBLK (mode))
type = "block";
else if (RTEMS_RFS_S_ISREG (mode))
type = "file";
else if (RTEMS_RFS_S_ISLNK (mode))
type = "link";
printf("rtems-rfs: inode-create: parent:%" PRIu32 " name:", parent);
for (c = 0; c < length; c++)
printf ("%c", name[c]);
printf (" type:%s mode:%04x (%03o)\n", type, mode, mode & ((1 << 10) - 1));
}
/*
* The file type is field within the mode. Check we have a sane mode set.
*/
switch (mode & RTEMS_RFS_S_IFMT)
{
case RTEMS_RFS_S_IFDIR:
case RTEMS_RFS_S_IFCHR:
case RTEMS_RFS_S_IFBLK:
case RTEMS_RFS_S_IFREG:
case RTEMS_RFS_S_IFLNK:
break;
default:
return EINVAL;
}
rc = rtems_rfs_inode_alloc (fs, parent, ino);
if (rc > 0)
return rc;
rc = rtems_rfs_inode_open (fs, *ino, &inode, true);
if (rc > 0)
{
rtems_rfs_inode_free (fs, *ino);
return rc;
}
rc = rtems_rfs_inode_initialise (&inode, links, mode, uid, gid);
if (rc > 0)
{
rtems_rfs_inode_close (fs, &inode);
rtems_rfs_inode_free (fs, *ino);
return rc;
}
/*
* Only handle the specifics of a directory. Let caller handle the others.
*
* The inode delete will free the inode.
*/
if (RTEMS_RFS_S_ISDIR (mode))
{
rc = rtems_rfs_dir_add_entry (fs, &inode, ".", 1, *ino);
if (rc == 0)
rc = rtems_rfs_dir_add_entry (fs, &inode, "..", 2, parent);
if (rc > 0)
{
rtems_rfs_inode_delete (fs, &inode);
rtems_rfs_inode_close (fs, &inode);
return rc;
}
}
rc = rtems_rfs_inode_open (fs, parent, &parent_inode, true);
if (rc > 0)
{
rtems_rfs_inode_delete (fs, &inode);
rtems_rfs_inode_close (fs, &inode);
return rc;
}
rc = rtems_rfs_dir_add_entry (fs, &parent_inode, name, length, *ino);
if (rc > 0)
{
rtems_rfs_inode_delete (fs, &inode);
rtems_rfs_inode_close (fs, &inode);
rtems_rfs_inode_close (fs, &parent_inode);
return rc;
}
/*
* If the node is a directory update the parent link count as the
* new directory has the '..' link that points to the parent.
*/
if (RTEMS_RFS_S_ISDIR (mode))
rtems_rfs_inode_set_links (&parent_inode,
rtems_rfs_inode_get_links (&parent_inode) + 1);
rc = rtems_rfs_inode_close (fs, &parent_inode);
if (rc > 0)
{
rtems_rfs_inode_delete (fs, &inode);
rtems_rfs_inode_close (fs, &inode);
return rc;
}
rc = rtems_rfs_inode_close (fs, &inode);
if (rc > 0)
{
rtems_rfs_inode_free (fs, *ino);
return rc;
}
return 0;
}
int
rtems_rfs_symlink_read (rtems_rfs_file_system* fs,
rtems_rfs_ino link,
char* path,
size_t size,
size_t* length)
{
rtems_rfs_inode_handle inode;
int rc;
if (rtems_rfs_trace (RTEMS_RFS_TRACE_SYMLINK_READ))
printf ("rtems-rfs: symlink-read: link:%" PRIu32 "\n", link);
rc = rtems_rfs_inode_open (fs, link, &inode, true);
if (rc)
return rc;
if (!RTEMS_RFS_S_ISLNK (rtems_rfs_inode_get_mode (&inode)))
{
rtems_rfs_inode_close (fs, &inode);
return EINVAL;
}
*length = rtems_rfs_inode_get_block_offset (&inode);
if (size < *length)
{
*length = size;
}
if (rtems_rfs_inode_get_block_count (&inode) == 0)
{
memcpy (path, inode.node->data.name, *length);
}
else
{
rtems_rfs_block_map map;
rtems_rfs_block_no block;
rtems_rfs_buffer_handle buffer;
char* data;
rc = rtems_rfs_block_map_open (fs, &inode, &map);
if (rc > 0)
{
rtems_rfs_inode_close (fs, &inode);
return rc;
}
rc = rtems_rfs_block_map_seek (fs, &map, 0, &block);
if (rc > 0)
{
rtems_rfs_block_map_close (fs, &map);
rtems_rfs_inode_close (fs, &inode);
return rc;
}
rc = rtems_rfs_buffer_handle_open (fs, &buffer);
if (rc > 0)
{
rtems_rfs_block_map_close (fs, &map);
rtems_rfs_inode_close (fs, &inode);
return rc;
}
rc = rtems_rfs_buffer_handle_request (fs, &buffer, block, false);
if (rc > 0)
{
rtems_rfs_block_map_close (fs, &map);
rtems_rfs_inode_close (fs, &inode);
return rc;
}
data = rtems_rfs_buffer_data (&buffer);
memcpy (path, data, *length);
rc = rtems_rfs_buffer_handle_close (fs, &buffer);
if (rc > 0)
{
rtems_rfs_block_map_close (fs, &map);
rtems_rfs_inode_close (fs, &inode);
return rc;
}
rc = rtems_rfs_block_map_close (fs, &map);
if (rc > 0)
{
rtems_rfs_inode_close (fs, &inode);
return rc;
}
}
rc = rtems_rfs_inode_close (fs, &inode);
return rc;
}
static int
rtems_rfs_shell_inode (rtems_rfs_file_system* fs, int argc, char *argv[])
{
rtems_rfs_ino start;
rtems_rfs_ino end;
rtems_rfs_ino total;
rtems_rfs_ino ino;
bool show_all;
bool error_check_only;
bool forced;
bool have_start;
bool have_end;
int arg;
int b;
int rc;
total = fs->group_inodes * fs->group_count;
start = RTEMS_RFS_ROOT_INO;
end = total - 1;
show_all = false;
error_check_only = false;
forced = false;
have_start = have_end = false;
for (arg = 1; arg < argc; arg++)
{
if (argv[arg][0] == '-')
{
switch (argv[arg][1])
{
case 'a':
show_all = true;
break;
case 'e':
error_check_only = true;
break;
case 'f':
forced = true;
break;
default:
printf ("warning: option ignored: %s\n", argv[arg]);
break;
}
}
else
{
if (have_end && have_start)
printf ("warning: option ignored: %s\n", argv[arg]);
else if (!have_start)
{
start = end = strtoul (argv[arg], 0, 0);
have_start = true;
}
else
{
end = strtoul (argv[arg], 0, 0);
have_end = true;
}
}
}
if ((start >= total) || (end >= total))
{
printf ("error: inode out of range (0->%" PRId32 ").\n", total - 1);
return 1;
}
rtems_rfs_shell_lock_rfs (fs);
for (ino = start; ino <= end; ino++)
{
rtems_rfs_inode_handle inode;
bool allocated;
rc = rtems_rfs_group_bitmap_test (fs, true, ino, &allocated);
if (rc > 0)
{
rtems_rfs_shell_unlock_rfs (fs);
printf ("error: testing inode state: ino=%" PRIu32 ": (%d) %s\n",
ino, rc, strerror (rc));
return 1;
}
if (show_all || allocated)
{
uint16_t mode;
bool error;
rc = rtems_rfs_inode_open (fs, ino, &inode, true);
if (rc > 0)
{
rtems_rfs_shell_unlock_rfs (fs);
printf ("error: opening inode handle: ino=%" PRIu32 ": (%d) %s\n",
ino, rc, strerror (rc));
return 1;
}
error = false;
mode = rtems_rfs_inode_get_mode (&inode);
if (error_check_only)
{
if (!RTEMS_RFS_S_ISDIR (mode) &&
!RTEMS_RFS_S_ISCHR (mode) &&
!RTEMS_RFS_S_ISBLK (mode) &&
!RTEMS_RFS_S_ISREG (mode) &&
!RTEMS_RFS_S_ISLNK (mode))
error = true;
else
{
#if NEED_TO_HANDLE_DIFFERENT_TYPES
int b;
for (b = 0; b < RTEMS_RFS_INODE_BLOCKS; b++)
{
uint32_t block;
block = rtems_rfs_inode_get_block (&inode, b);
if ((block <= RTEMS_RFS_SUPERBLOCK_SIZE) ||
(block >= rtems_rfs_fs_blocks (fs)))
error = true;
}
#endif
}
}
if (!error_check_only || error)
{
printf (" %5" PRIu32 ": pos=%06" PRIu32 ":%04zx %c ",
ino, rtems_rfs_buffer_bnum (&inode.buffer),
inode.offset * RTEMS_RFS_INODE_SIZE,
allocated ? 'A' : 'F');
if (!allocated && !forced)
printf (" --\n");
else
{
const char* type;
type = "UKN";
if (RTEMS_RFS_S_ISDIR (mode))
type = "DIR";
else if (RTEMS_RFS_S_ISCHR (mode))
type = "CHR";
else if (RTEMS_RFS_S_ISBLK (mode))
type = "BLK";
else if (RTEMS_RFS_S_ISREG (mode))
type = "REG";
else if (RTEMS_RFS_S_ISLNK (mode))
type = "LNK";
printf ("links=%03i mode=%04x (%s/%03o) bo=%04u bc=%04" PRIu32 " b=[",
rtems_rfs_inode_get_links (&inode),
mode, type, mode & ((1 << 10) - 1),
rtems_rfs_inode_get_block_offset (&inode),
rtems_rfs_inode_get_block_count (&inode));
for (b = 0; b < (RTEMS_RFS_INODE_BLOCKS - 1); b++)
printf ("%" PRIu32 " ", rtems_rfs_inode_get_block (&inode, b));
printf ("%" PRIu32 "]\n", rtems_rfs_inode_get_block (&inode, b));
}
}
rc = rtems_rfs_inode_close (fs, &inode);
if (rc > 0)
{
rtems_rfs_shell_unlock_rfs (fs);
printf ("error: closing inode handle: ino=%" PRIu32 ": (%d) %s\n",
ino, rc, strerror (rc));
return 1;
}
}
}
rtems_rfs_shell_unlock_rfs (fs);
return 0;
}