* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011 Whamcloud, Inc.
+ *
*/
/*
* This file is part of Lustre, http://www.lustre.org/
}
static struct inode *search_inode_for_lustre(struct super_block *sb,
- struct lu_fid *fid,
- int mode)
+ const struct lu_fid *fid)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct ptlrpc_request *req = NULL;
struct inode *inode = NULL;
- unsigned long valid = 0;
int eadatalen = 0;
- ino_t ino = cl_fid_build_ino(fid);
+ unsigned long hash = (unsigned long) cl_fid_build_ino(fid, 0);
+ struct md_op_data *op_data;
int rc;
ENTRY;
- CDEBUG(D_INFO, "searching inode for:(%lu,"DFID")\n", ino, PFID(fid));
+ CDEBUG(D_INFO, "searching inode for:(%lu,"DFID")\n", hash, PFID(fid));
- inode = ILOOKUP(sb, ino, ll_nfs_test_inode, fid);
+ inode = ilookup5(sb, hash, ll_nfs_test_inode, (void *)fid);
if (inode)
RETURN(inode);
- if (S_ISREG(mode)) {
- rc = ll_get_max_mdsize(sbi, &eadatalen);
- if (rc)
- RETURN(ERR_PTR(rc));
- valid |= OBD_MD_FLEASIZE;
- }
+ rc = ll_get_max_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 */
+ OBD_ALLOC_PTR(op_data);
+ if (op_data == NULL)
+ return ERR_PTR(-ENOMEM);
- rc = md_getattr(sbi->ll_md_exp, fid, NULL, valid, eadatalen, &req);
+ 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);
+ OBD_FREE_PTR(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);
ptlrpc_req_finished(req);
if (rc)
RETURN(inode);
}
-static struct dentry *ll_iget_for_nfs(struct super_block *sb,
- struct lu_fid *fid,
- umode_t mode)
+struct lustre_nfs_fid {
+ struct lu_fid lnf_child;
+ struct lu_fid lnf_parent;
+};
+
+static struct dentry *
+ll_iget_for_nfs(struct super_block *sb, struct lu_fid *fid, struct lu_fid *parent)
{
struct inode *inode;
struct dentry *result;
if (!fid_is_sane(fid))
RETURN(ERR_PTR(-ESTALE));
- inode = search_inode_for_lustre(sb, fid, mode);
+ inode = search_inode_for_lustre(sb, fid);
if (IS_ERR(inode))
RETURN(ERR_PTR(PTR_ERR(inode)));
if (is_bad_inode(inode)) {
/* we didn't find the right inode.. */
- CERROR("can't get inode by fid "DFID"\n",
- PFID(fid));
iput(inode);
RETURN(ERR_PTR(-ESTALE));
}
- result = d_alloc_anon(inode);
- if (!result) {
- iput(inode);
- RETURN(ERR_PTR(-ENOMEM));
+ /**
+ * It is an anonymous dentry without OST objects created yet.
+ * We have to find the parent to tell MDS how to init lov objects.
+ */
+ if (S_ISREG(inode->i_mode) && ll_i2info(inode)->lli_smd == NULL &&
+ parent != NULL) {
+ struct ll_inode_info *lli = ll_i2info(inode);
+
+ cfs_spin_lock(&lli->lli_lock);
+ lli->lli_pfid = *parent;
+ cfs_spin_unlock(&lli->lli_lock);
}
- ll_dops_init(result, 1);
+ result = d_obtain_alias(inode);
+ if (IS_ERR(result))
+ RETURN(result);
+
+ ll_dops_init(result, 1, 0);
RETURN(result);
}
-/*
- * This length is counted as amount of __u32,
- * It is composed of a fid and a mode
+#define LUSTRE_NFS_FID 0x97
+
+/**
+ * \a connectable - is nfsd will connect himself or this should be done
+ * at lustre
+ *
+ * The return value is file handle type:
+ * 1 -- contains child file handle;
+ * 2 -- contains child file handle and parent file handle;
+ * 255 -- error.
*/
-#define ONE_FH_LEN (sizeof(struct lu_fid)/4 + 1)
+static int ll_encode_fh(struct dentry *de, __u32 *fh, int *plen,
+ int connectable)
+{
+ struct inode *inode = de->d_inode;
+ struct inode *parent = de->d_parent->d_inode;
+ struct lustre_nfs_fid *nfs_fid = (void *)fh;
+ ENTRY;
-static struct dentry *ll_decode_fh(struct super_block *sb, __u32 *fh, int fh_len,
- int fh_type,
- int (*acceptable)(void *, struct dentry *),
- void *context)
+ CDEBUG(D_INFO, "encoding for (%lu,"DFID") maxlen=%d minlen=%d\n",
+ inode->i_ino, PFID(ll_inode2fid(inode)), *plen,
+ (int)sizeof(struct lustre_nfs_fid));
+
+ if (*plen < sizeof(struct lustre_nfs_fid)/4)
+ RETURN(255);
+
+ nfs_fid->lnf_child = *ll_inode2fid(inode);
+ nfs_fid->lnf_parent = *ll_inode2fid(parent);
+ *plen = sizeof(struct lustre_nfs_fid)/4;
+
+ RETURN(LUSTRE_NFS_FID);
+}
+
+static int ll_nfs_get_name_filldir(void *cookie, const char *name, int namelen,
+ loff_t hash, u64 ino, unsigned type)
{
- struct lu_fid *parent = NULL;
- struct lu_fid *child;
- struct dentry *entry;
+ /* It is hack to access lde_fid for comparison with lgd_fid.
+ * So the input 'name' must be part of the 'lu_dirent'. */
+ struct lu_dirent *lde = container_of0(name, struct lu_dirent, lde_name);
+ struct ll_getname_data *lgd = cookie;
+ struct lu_fid fid;
+
+ fid_le_to_cpu(&fid, &lde->lde_fid);
+ if (lu_fid_eq(&fid, &lgd->lgd_fid)) {
+ memcpy(lgd->lgd_name, name, namelen);
+ lgd->lgd_name[namelen] = 0;
+ lgd->lgd_found = 1;
+ }
+ return lgd->lgd_found;
+}
+
+static int ll_get_name(struct dentry *dentry, char *name,
+ struct dentry *child)
+{
+ struct inode *dir = dentry->d_inode;
+ struct file *filp;
+ struct ll_getname_data lgd;
+ int rc;
ENTRY;
- CDEBUG(D_INFO, "decoding for "DFID" fh_len=%d fh_type=%d\n",
- PFID((struct lu_fid*)fh), fh_len, fh_type);
+ if (!dir || !S_ISDIR(dir->i_mode))
+ GOTO(out, rc = -ENOTDIR);
- if (fh_type != 1 && fh_type != 2)
- RETURN(ERR_PTR(-ESTALE));
- if (fh_len < ONE_FH_LEN * fh_type)
- RETURN(ERR_PTR(-ESTALE));
+ if (!dir->i_fop)
+ GOTO(out, rc = -EINVAL);
- child = (struct lu_fid*)fh;
- if (fh_type == 2)
- parent = (struct lu_fid*)(fh + ONE_FH_LEN);
-
- entry = sb->s_export_op->find_exported_dentry(sb, child, parent,
- acceptable, context);
- RETURN(entry);
+ filp = ll_dentry_open(dget(dentry), mntget(ll_i2sbi(dir)->ll_mnt),
+ O_RDONLY, current_cred());
+ if (IS_ERR(filp))
+ GOTO(out, rc = PTR_ERR(filp));
+
+ if (!filp->f_op->readdir)
+ GOTO(out_close, rc = -EINVAL);
+
+ lgd.lgd_name = name;
+ lgd.lgd_fid = ll_i2info(child->d_inode)->lli_fid;
+ lgd.lgd_found = 0;
+
+ cfs_mutex_lock(&dir->i_mutex);
+ rc = ll_readdir(filp, &lgd, ll_nfs_get_name_filldir);
+ cfs_mutex_unlock(&dir->i_mutex);
+ if (!rc && !lgd.lgd_found)
+ rc = -ENOENT;
+ EXIT;
+
+out_close:
+ fput(filp);
+out:
+ return rc;
}
-/* The return value is file handle type:
- * 1 -- contains child file handle;
- * 2 -- contains child file handle and parent file handle;
- * 255 -- error.
+#ifdef HAVE_FH_TO_DENTRY
+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));
+}
+
+#else
+
+/*
+ * This length is counted as amount of __u32,
+ * It is composed of a fid and a mode
*/
-static int ll_encode_fh(struct dentry *de, __u32 *fh, int *plen, int connectable)
+static struct dentry *ll_decode_fh(struct super_block *sb, __u32 *fh, int fh_len,
+ int fh_type,
+ int (*acceptable)(void *, struct dentry *),
+ void *context)
{
- struct inode *inode = de->d_inode;
- struct lu_fid *fid = ll_inode2fid(inode);
+ struct lustre_nfs_fid *nfs_fid = (void *)fh;
+ struct dentry *entry;
ENTRY;
- CDEBUG(D_INFO, "encoding for (%lu,"DFID") maxlen=%d minlen=%d\n",
- inode->i_ino, PFID(fid), *plen, (int)ONE_FH_LEN);
+ CDEBUG(D_INFO, "decoding for "DFID" fh_len=%d fh_type=%x\n",
+ PFID(&nfs_fid->lnf_child), fh_len, fh_type);
- if (*plen < ONE_FH_LEN)
- RETURN(255);
+ if (fh_type != LUSTRE_NFS_FID)
+ RETURN(ERR_PTR(-EPROTO));
- memcpy((char*)fh, fid, sizeof(*fid));
- *(fh + ONE_FH_LEN - 1) = (__u32)(S_IFMT & inode->i_mode);
-
- if (de->d_parent && *plen >= ONE_FH_LEN * 2) {
- struct inode *parent = de->d_parent->d_inode;
- fh += ONE_FH_LEN;
- memcpy((char*)fh, &ll_i2info(parent)->lli_fid, sizeof(*fid));
- *(fh + ONE_FH_LEN - 1) = (__u32)(S_IFMT & parent->i_mode);
- *plen = ONE_FH_LEN * 2;
- RETURN(2);
- } else {
- *plen = ONE_FH_LEN;
- RETURN(1);
- }
+ entry = sb->s_export_op->find_exported_dentry(sb, &nfs_fid->lnf_child,
+ &nfs_fid->lnf_parent,
+ acceptable, context);
+ RETURN(entry);
}
static struct dentry *ll_get_dentry(struct super_block *sb, void *data)
{
- struct lu_fid *fid;
- struct dentry *entry;
- __u32 mode;
+ struct dentry *entry;
ENTRY;
- fid = (struct lu_fid *)data;
- mode = *((__u32*)data + ONE_FH_LEN - 1);
-
- entry = ll_iget_for_nfs(sb, fid, mode);
+ entry = ll_iget_for_nfs(sb, data, NULL);
RETURN(entry);
}
-
+#endif
static struct dentry *ll_get_parent(struct dentry *dchild)
{
struct ptlrpc_request *req = NULL;
struct dentry *result = NULL;
struct mdt_body *body;
static char dotdot[] = "..";
+ struct md_op_data *op_data;
int rc;
ENTRY;
-
+
LASSERT(dir && S_ISDIR(dir->i_mode));
-
+
sbi = ll_s2sbi(dir->i_sb);
-
- CDEBUG(D_INFO, "getting parent for (%lu,"DFID")\n",
+
+ CDEBUG(D_INFO, "getting parent for (%lu,"DFID")\n",
dir->i_ino, PFID(ll_inode2fid(dir)));
- rc = md_getattr_name(sbi->ll_md_exp, ll_inode2fid(dir), NULL,
- dotdot, strlen(dotdot) + 1, 0, 0,
- ll_i2suppgid(dir), &req);
+ op_data = ll_prep_md_op_data(NULL, dir, NULL, dotdot,
+ strlen(dotdot), 0,
+ 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",
+
+ 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, S_IFDIR);
+ 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,
- .get_dentry = ll_get_dentry,
.encode_fh = ll_encode_fh,
+ .get_name = ll_get_name,
+#ifdef HAVE_FH_TO_DENTRY
+ .fh_to_dentry = ll_fh_to_dentry,
+ .fh_to_parent = ll_fh_to_parent,
+#else
+ .get_dentry = ll_get_dentry,
.decode_fh = ll_decode_fh,
+#endif
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff