int cl_sb_fini(struct super_block *sb)
{
struct ll_sb_info *sbi;
struct lu_env *env;
struct cl_device *cld;
int refcheck;
int result;
sbi = ll_s2sbi(sb);
env = cl_env_get(&refcheck);
if (!IS_ERR(env)) {
cld = sbi->ll_cl;
if (cld != NULL) {
cl_stack_fini(env, cld);
sbi->ll_cl = NULL;
sbi->ll_site = NULL;
}
cl_env_put(env, &refcheck);
result = 0;
} else {
CERROR("Cannot cleanup cl-stack due to memory shortage.\n");
result = PTR_ERR(env);
}
/*
* If mount failed (sbi->ll_cl == NULL), and this there are no other
* mounts, stop device types manually (this usually happens
* automatically when last device is destroyed).
*/
lu_types_stop();
return result;
}
int cl_sb_fini(struct super_block *sb)
{
struct ll_sb_info *sbi;
struct lu_env *env;
struct cl_device *cld;
u16 refcheck;
int result;
sbi = ll_s2sbi(sb);
env = cl_env_get(&refcheck);
if (!IS_ERR(env)) {
cld = sbi->ll_cl;
if (cld) {
cl_stack_fini(env, cld);
sbi->ll_cl = NULL;
sbi->ll_site = NULL;
}
cl_env_put(env, &refcheck);
result = 0;
} else {
CERROR("Cannot cleanup cl-stack due to memory shortage.\n");
result = PTR_ERR(env);
}
return result;
}
static struct inode *ll_alloc_inode(struct super_block *sb)
{
struct ll_inode_info *lli;
ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_ALLOC_INODE, 1);
OBD_SLAB_ALLOC_PTR_GFP(lli, ll_inode_cachep, CFS_ALLOC_IO);
if (lli == NULL)
return NULL;
inode_init_once(&lli->lli_vfs_inode);
return &lli->lli_vfs_inode;
}
static struct inode *ll_alloc_inode(struct super_block *sb)
{
struct ll_inode_info *lli;
ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_ALLOC_INODE, 1);
lli = kmem_cache_zalloc(ll_inode_cachep, GFP_NOFS);
if (!lli)
return NULL;
inode_init_once(&lli->lli_vfs_inode);
return &lli->lli_vfs_inode;
}
struct inode *search_inode_for_lustre(struct super_block *sb,
const struct lu_fid *fid)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct ptlrpc_request *req = NULL;
struct inode *inode = NULL;
int eadatalen = 0;
unsigned long hash = cl_fid_build_ino(fid,
ll_need_32bit_api(sbi));
struct md_op_data *op_data;
int rc;
CDEBUG(D_INFO, "searching inode for:(%lu,"DFID")\n", hash, PFID(fid));
inode = ilookup5(sb, hash, ll_nfs_test_inode, (void *)fid);
if (inode)
return inode;
rc = ll_get_default_mdsize(sbi, &eadatalen);
if (rc)
return ERR_PTR(rc);
/* Because inode is NULL, ll_prep_md_op_data can not
* be used here. So we allocate op_data ourselves */
op_data = kzalloc(sizeof(*op_data), GFP_NOFS);
if (!op_data)
return ERR_PTR(-ENOMEM);
op_data->op_fid1 = *fid;
op_data->op_mode = eadatalen;
op_data->op_valid = OBD_MD_FLEASIZE;
/* mds_fid2dentry ignores f_type */
rc = md_getattr(sbi->ll_md_exp, op_data, &req);
kfree(op_data);
if (rc) {
CERROR("can't get object attrs, fid "DFID", rc %d\n",
PFID(fid), rc);
return ERR_PTR(rc);
}
rc = ll_prep_inode(&inode, req, sb, NULL);
ptlrpc_req_finished(req);
if (rc)
return ERR_PTR(rc);
return inode;
}
int cl_sb_init(struct super_block *sb)
{
struct ll_sb_info *sbi;
struct cl_device *cl;
struct lu_env *env;
int rc = 0;
u16 refcheck;
sbi = ll_s2sbi(sb);
env = cl_env_get(&refcheck);
if (!IS_ERR(env)) {
cl = cl_type_setup(env, NULL, &vvp_device_type,
sbi->ll_dt_exp->exp_obd->obd_lu_dev);
if (!IS_ERR(cl)) {
sbi->ll_cl = cl;
sbi->ll_site = cl2lu_dev(cl)->ld_site;
}
cl_env_put(env, &refcheck);
} else {
rc = PTR_ERR(env);
}
return rc;
}
static int ll_get_name(struct dentry *dentry, char *name,
struct dentry *child)
{
struct inode *dir = d_inode(dentry);
int rc;
struct ll_getname_data lgd = {
.lgd_name = name,
.lgd_fid = ll_i2info(d_inode(child))->lli_fid,
.ctx.actor = ll_nfs_get_name_filldir,
};
if (!dir || !S_ISDIR(dir->i_mode)) {
rc = -ENOTDIR;
goto out;
}
if (!dir->i_fop) {
rc = -EINVAL;
goto out;
}
mutex_lock(&dir->i_mutex);
rc = ll_dir_read(dir, &lgd.ctx);
mutex_unlock(&dir->i_mutex);
if (!rc && !lgd.lgd_found)
rc = -ENOENT;
out:
return rc;
}
static struct dentry *ll_fh_to_dentry(struct super_block *sb, struct fid *fid,
int fh_len, int fh_type)
{
struct lustre_nfs_fid *nfs_fid = (struct lustre_nfs_fid *)fid;
if (fh_type != LUSTRE_NFS_FID)
return ERR_PTR(-EPROTO);
return ll_iget_for_nfs(sb, &nfs_fid->lnf_child, &nfs_fid->lnf_parent);
}
static struct dentry *ll_fh_to_parent(struct super_block *sb, struct fid *fid,
int fh_len, int fh_type)
{
struct lustre_nfs_fid *nfs_fid = (struct lustre_nfs_fid *)fid;
if (fh_type != LUSTRE_NFS_FID)
return ERR_PTR(-EPROTO);
return ll_iget_for_nfs(sb, &nfs_fid->lnf_parent, NULL);
}
static struct dentry *ll_get_parent(struct dentry *dchild)
{
struct ptlrpc_request *req = NULL;
struct inode *dir = d_inode(dchild);
struct ll_sb_info *sbi;
struct dentry *result = NULL;
struct mdt_body *body;
static char dotdot[] = "..";
struct md_op_data *op_data;
int rc;
int lmmsize;
LASSERT(dir && S_ISDIR(dir->i_mode));
sbi = ll_s2sbi(dir->i_sb);
CDEBUG(D_INFO, "getting parent for (%lu,"DFID")\n",
dir->i_ino, PFID(ll_inode2fid(dir)));
rc = ll_get_default_mdsize(sbi, &lmmsize);
if (rc != 0)
return ERR_PTR(rc);
op_data = ll_prep_md_op_data(NULL, dir, NULL, dotdot,
strlen(dotdot), lmmsize,
LUSTRE_OPC_ANY, NULL);
if (IS_ERR(op_data))
return (void *)op_data;
rc = md_getattr_name(sbi->ll_md_exp, op_data, &req);
ll_finish_md_op_data(op_data);
if (rc) {
CERROR("failure %d inode %lu get parent\n", rc, dir->i_ino);
return ERR_PTR(rc);
}
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
LASSERT(body->valid & OBD_MD_FLID);
CDEBUG(D_INFO, "parent for "DFID" is "DFID"\n",
PFID(ll_inode2fid(dir)), PFID(&body->fid1));
result = ll_iget_for_nfs(dir->i_sb, &body->fid1, NULL);
ptlrpc_req_finished(req);
return result;
}
struct export_operations lustre_export_operations = {
.get_parent = ll_get_parent,
.encode_fh = ll_encode_fh,
.get_name = ll_get_name,
.fh_to_dentry = ll_fh_to_dentry,
.fh_to_parent = ll_fh_to_parent,
};
