/*
* Generic handler routine to check if a name can be added to a directory,
* without adding any blocks to the directory.
*/
static int /* error */
xfs_dir_canenter(xfs_trans_t *trans, xfs_inode_t *dp, char *name, int namelen)
{
xfs_da_args_t args;
int retval, newsize;
ASSERT((dp->i_d.di_mode & IFMT) == IFDIR);
/*
* Fill in the arg structure for this request.
*/
args.name = name;
args.namelen = namelen;
args.hashval = xfs_da_hashname(name, namelen);
args.inumber = 0;
args.dp = dp;
args.firstblock = NULL;
args.flist = NULL;
args.total = 0;
args.whichfork = XFS_DATA_FORK;
args.trans = trans;
args.justcheck = args.addname = args.oknoent = 1;
/*
* Decide on what work routines to call based on the inode size.
*/
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
newsize = XFS_DIR_SF_ENTSIZE_BYNAME(args.namelen);
if ((dp->i_d.di_size + newsize) <= XFS_IFORK_DSIZE(dp))
retval = 0;
else
retval = XFS_ERROR(ENOSPC);
} else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
retval = xfs_dir_leaf_addname(&args);
} else {
retval = xfs_dir_node_addname(&args);
}
return(retval);
}
int
xfs_dir_sf_entsize_byname(int len)
{
return XFS_DIR_SF_ENTSIZE_BYNAME(len);
}
/*
* Generic handler routine to add a name to a directory.
* Transitions directory from shortform to Btree as necessary.
*/
static int /* error */
xfs_dir_createname(xfs_trans_t *trans, xfs_inode_t *dp, char *name,
int namelen, xfs_ino_t inum, xfs_fsblock_t *firstblock,
xfs_bmap_free_t *flist, xfs_extlen_t total)
{
xfs_da_args_t args;
int retval, newsize, done;
ASSERT((dp->i_d.di_mode & IFMT) == IFDIR);
if (retval = xfs_dir_ino_validate(trans->t_mountp, inum))
return (retval);
XFS_STATS_INC(xs_dir_create);
/*
* Fill in the arg structure for this request.
*/
args.name = name;
args.namelen = namelen;
args.hashval = xfs_da_hashname(name, namelen);
args.inumber = inum;
args.dp = dp;
args.firstblock = firstblock;
args.flist = flist;
args.total = total;
args.whichfork = XFS_DATA_FORK;
args.trans = trans;
args.justcheck = 0;
args.addname = args.oknoent = 1;
/*
* Decide on what work routines to call based on the inode size.
*/
done = 0;
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
newsize = XFS_DIR_SF_ENTSIZE_BYNAME(args.namelen);
if ((dp->i_d.di_size + newsize) <= XFS_IFORK_DSIZE(dp)) {
retval = xfs_dir_shortform_addname(&args);
done = 1;
} else {
if (total == 0)
return XFS_ERROR(ENOSPC);
retval = xfs_dir_shortform_to_leaf(&args);
done = retval != 0;
}
}
if (!done && xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
retval = xfs_dir_leaf_addname(&args);
done = retval != ENOSPC;
if (!done) {
if (total == 0)
return XFS_ERROR(ENOSPC);
retval = xfs_dir_leaf_to_node(&args);
done = retval != 0;
}
}
if (!done) {
retval = xfs_dir_node_addname(&args);
}
return(retval);
}
