-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*/
#define DEBUG_SUBSYSTEM S_CLASS
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#include <obd.h>
#include <dt_object.h>
/* fid_be_to_cpu() */
#include <lustre_fid.h>
+#include <lquota.h>
+
struct dt_find_hint {
struct lu_fid *dfh_fid;
struct dt_device *dfh_dt;
struct dt_thread_info {
char dti_buf[DT_MAX_PATH];
- struct lu_fid_pack dti_pack;
struct dt_find_hint dti_dfh;
};
LU_KEY_FINI(dt_global, struct dt_thread_info);
static struct lu_context_key dt_key = {
- .lct_tags = LCT_MD_THREAD|LCT_DT_THREAD,
+ .lct_tags = LCT_MD_THREAD | LCT_DT_THREAD | LCT_MG_THREAD | LCT_LOCAL,
.lct_init = dt_global_key_init,
.lct_fini = dt_global_key_fini
};
*/
void dt_txn_callback_add(struct dt_device *dev, struct dt_txn_callback *cb)
{
- list_add(&cb->dtc_linkage, &dev->dd_txn_callbacks);
+ cfs_list_add(&cb->dtc_linkage, &dev->dd_txn_callbacks);
}
EXPORT_SYMBOL(dt_txn_callback_add);
void dt_txn_callback_del(struct dt_device *dev, struct dt_txn_callback *cb)
{
- list_del_init(&cb->dtc_linkage);
+ cfs_list_del_init(&cb->dtc_linkage);
}
EXPORT_SYMBOL(dt_txn_callback_del);
int dt_txn_hook_start(const struct lu_env *env,
- struct dt_device *dev, struct txn_param *param)
+ struct dt_device *dev, struct thandle *th)
{
- int result;
+ int rc = 0;
struct dt_txn_callback *cb;
- result = 0;
- list_for_each_entry(cb, &dev->dd_txn_callbacks, dtc_linkage) {
- if (cb->dtc_txn_start == NULL)
+ if (th->th_local)
+ return 0;
+
+ cfs_list_for_each_entry(cb, &dev->dd_txn_callbacks, dtc_linkage) {
+ if (cb->dtc_txn_start == NULL ||
+ !(cb->dtc_tag & env->le_ctx.lc_tags))
continue;
- result = cb->dtc_txn_start(env, param, cb->dtc_cookie);
- if (result < 0)
+ rc = cb->dtc_txn_start(env, th, cb->dtc_cookie);
+ if (rc < 0)
break;
}
- return result;
+ return rc;
}
EXPORT_SYMBOL(dt_txn_hook_start);
{
struct dt_device *dev = txn->th_dev;
struct dt_txn_callback *cb;
- int result;
+ int rc = 0;
- result = 0;
- list_for_each_entry(cb, &dev->dd_txn_callbacks, dtc_linkage) {
- if (cb->dtc_txn_stop == NULL)
+ if (txn->th_local)
+ return 0;
+
+ cfs_list_for_each_entry(cb, &dev->dd_txn_callbacks, dtc_linkage) {
+ if (cb->dtc_txn_stop == NULL ||
+ !(cb->dtc_tag & env->le_ctx.lc_tags))
continue;
- result = cb->dtc_txn_stop(env, txn, cb->dtc_cookie);
- if (result < 0)
+ rc = cb->dtc_txn_stop(env, txn, cb->dtc_cookie);
+ if (rc < 0)
break;
}
- return result;
+ return rc;
}
EXPORT_SYMBOL(dt_txn_hook_stop);
-int dt_txn_hook_commit(const struct lu_env *env, struct thandle *txn)
+void dt_txn_hook_commit(struct thandle *txn)
{
- struct dt_device *dev = txn->th_dev;
struct dt_txn_callback *cb;
- int result;
- result = 0;
- list_for_each_entry(cb, &dev->dd_txn_callbacks, dtc_linkage) {
- if (cb->dtc_txn_commit == NULL)
- continue;
- result = cb->dtc_txn_commit(env, txn, cb->dtc_cookie);
- if (result < 0)
- break;
+ if (txn->th_local)
+ return;
+
+ cfs_list_for_each_entry(cb, &txn->th_dev->dd_txn_callbacks,
+ dtc_linkage) {
+ if (cb->dtc_txn_commit)
+ cb->dtc_txn_commit(txn, cb->dtc_cookie);
}
- return result;
}
EXPORT_SYMBOL(dt_txn_hook_commit);
}
return result;
}
-
EXPORT_SYMBOL(dt_mode_to_dft);
+
/**
* lookup fid for object named \a name in directory \a dir.
*/
-static int dt_lookup(const struct lu_env *env, struct dt_object *dir,
- const char *name, struct lu_fid *fid)
+int dt_lookup_dir(const struct lu_env *env, struct dt_object *dir,
+ const char *name, struct lu_fid *fid)
{
- struct dt_thread_info *info = lu_context_key_get(&env->le_ctx,
- &dt_key);
- struct lu_fid_pack *pack = &info->dti_pack;
- struct dt_rec *rec = (struct dt_rec *)pack;
- const struct dt_key *key = (const struct dt_key *)name;
- int result;
-
- if (dt_try_as_dir(env, dir)) {
- result = dir->do_index_ops->dio_lookup(env, dir, rec, key,
- BYPASS_CAPA);
- if (result > 0)
- result = fid_unpack(pack, fid);
- else if (result == 0)
- result = -ENOENT;
- } else
- result = -ENOTDIR;
- return result;
+ if (dt_try_as_dir(env, dir))
+ return dt_lookup(env, dir, (struct dt_rec *)fid,
+ (const struct dt_key *)name, BYPASS_CAPA);
+ return -ENOTDIR;
}
-
+EXPORT_SYMBOL(dt_lookup_dir);
/**
* get object for given \a fid.
*/
struct dt_object *obj = dfh->dfh_o;
int result;
- result = dt_lookup(env, obj, entry, fid);
+ result = dt_lookup_dir(env, obj, entry, fid);
lu_object_put(env, &obj->do_lu);
if (result == 0) {
obj = dt_locate(env, dt, fid);
struct dt_thread_info *info = lu_context_key_get(&env->le_ctx,
&dt_key);
struct dt_find_hint *dfh = &info->dti_dfh;
- struct dt_object *obj = dfh->dfh_o;
+ struct dt_object *obj;
char *local = info->dti_buf;
int result;
result = dt_path_parser(env, local, dt_find_entry, dfh);
if (result != 0)
obj = ERR_PTR(result);
+ else
+ obj = dfh->dfh_o;
}
} else {
obj = ERR_PTR(result);
struct dt_object *o;
int result;
- result = dt_lookup(env, p, name, fid);
+ result = dt_lookup_dir(env, p, name, fid);
if (result == 0){
o = dt_locate(env, dt, fid);
}
}
EXPORT_SYMBOL(dt_store_open);
+struct dt_object *dt_find_or_create(const struct lu_env *env,
+ struct dt_device *dt,
+ const struct lu_fid *fid,
+ struct dt_object_format *dof,
+ struct lu_attr *at)
+{
+ struct dt_object *dto;
+ struct thandle *th;
+ int rc;
+
+ ENTRY;
+
+ dto = dt_locate(env, dt, fid);
+ if (IS_ERR(dto))
+ RETURN(dto);
+
+ LASSERT(dto != NULL);
+ if (dt_object_exists(dto))
+ RETURN(dto);
+
+ th = dt_trans_create(env, dt);
+ if (IS_ERR(th))
+ GOTO(out, rc = PTR_ERR(th));
+
+ rc = dt_declare_create(env, dto, at, NULL, dof, th);
+ if (rc)
+ GOTO(trans_stop, rc);
+
+ rc = dt_trans_start_local(env, dt, th);
+ if (rc)
+ GOTO(trans_stop, rc);
+
+ dt_write_lock(env, dto, 0);
+ if (dt_object_exists(dto))
+ GOTO(unlock, rc = 0);
+
+ CDEBUG(D_OTHER, "create new object "DFID"\n", PFID(fid));
+
+ rc = dt_create(env, dto, at, NULL, dof, th);
+ if (rc)
+ GOTO(unlock, rc);
+ LASSERT(dt_object_exists(dto));
+unlock:
+ dt_write_unlock(env, dto);
+trans_stop:
+ dt_trans_stop(env, dt, th);
+out:
+ if (rc) {
+ lu_object_put(env, &dto->do_lu);
+ RETURN(ERR_PTR(rc));
+ }
+ RETURN(dto);
+}
+EXPORT_SYMBOL(dt_find_or_create);
+
/* dt class init function. */
int dt_global_init(void)
{
lu_context_key_degister(&dt_key);
}
+/**
+ * Generic read helper. May return an error for partial reads.
+ *
+ * \param env lustre environment
+ * \param dt object to be read
+ * \param buf lu_buf to be filled, with buffer pointer and length
+ * \param pos position to start reading, updated as data is read
+ *
+ * \retval real size of data read
+ * \retval -ve errno on failure
+ */
+int dt_read(const struct lu_env *env, struct dt_object *dt,
+ struct lu_buf *buf, loff_t *pos)
+{
+ LASSERTF(dt != NULL, "dt is NULL when we want to read record\n");
+ return dt->do_body_ops->dbo_read(env, dt, buf, pos, BYPASS_CAPA);
+}
+EXPORT_SYMBOL(dt_read);
+
+/**
+ * Read structures of fixed size from storage. Unlike dt_read(), using
+ * dt_record_read() will return an error for partial reads.
+ *
+ * \param env lustre environment
+ * \param dt object to be read
+ * \param buf lu_buf to be filled, with buffer pointer and length
+ * \param pos position to start reading, updated as data is read
+ *
+ * \retval 0 on successfully reading full buffer
+ * \retval -EFAULT on short read
+ * \retval -ve errno on failure
+ */
+int dt_record_read(const struct lu_env *env, struct dt_object *dt,
+ struct lu_buf *buf, loff_t *pos)
+{
+ int rc;
+
+ LASSERTF(dt != NULL, "dt is NULL when we want to read record\n");
+
+ rc = dt->do_body_ops->dbo_read(env, dt, buf, pos, BYPASS_CAPA);
+
+ if (rc == buf->lb_len)
+ rc = 0;
+ else if (rc >= 0)
+ rc = -EFAULT;
+ return rc;
+}
+EXPORT_SYMBOL(dt_record_read);
+
+int dt_record_write(const struct lu_env *env, struct dt_object *dt,
+ const struct lu_buf *buf, loff_t *pos, struct thandle *th)
+{
+ int rc;
+
+ LASSERTF(dt != NULL, "dt is NULL when we want to write record\n");
+ LASSERT(th != NULL);
+ LASSERT(dt->do_body_ops);
+ LASSERT(dt->do_body_ops->dbo_write);
+ rc = dt->do_body_ops->dbo_write(env, dt, buf, pos, th, BYPASS_CAPA, 1);
+ if (rc == buf->lb_len)
+ rc = 0;
+ else if (rc >= 0)
+ rc = -EFAULT;
+ return rc;
+}
+EXPORT_SYMBOL(dt_record_write);
+
+int dt_declare_version_set(const struct lu_env *env, struct dt_object *o,
+ struct thandle *th)
+{
+ struct lu_buf vbuf;
+ char *xname = XATTR_NAME_VERSION;
+
+ LASSERT(o);
+ vbuf.lb_buf = NULL;
+ vbuf.lb_len = sizeof(dt_obj_version_t);
+ return dt_declare_xattr_set(env, o, &vbuf, xname, 0, th);
+
+}
+EXPORT_SYMBOL(dt_declare_version_set);
+
+void dt_version_set(const struct lu_env *env, struct dt_object *o,
+ dt_obj_version_t version, struct thandle *th)
+{
+ struct lu_buf vbuf;
+ char *xname = XATTR_NAME_VERSION;
+ int rc;
+
+ LASSERT(o);
+ vbuf.lb_buf = &version;
+ vbuf.lb_len = sizeof(version);
+
+ rc = dt_xattr_set(env, o, &vbuf, xname, 0, th, BYPASS_CAPA);
+ if (rc < 0)
+ CDEBUG(D_INODE, "Can't set version, rc %d\n", rc);
+ return;
+}
+EXPORT_SYMBOL(dt_version_set);
+
+dt_obj_version_t dt_version_get(const struct lu_env *env, struct dt_object *o)
+{
+ struct lu_buf vbuf;
+ char *xname = XATTR_NAME_VERSION;
+ dt_obj_version_t version;
+ int rc;
+
+ LASSERT(o);
+ vbuf.lb_buf = &version;
+ vbuf.lb_len = sizeof(version);
+ rc = dt_xattr_get(env, o, &vbuf, xname, BYPASS_CAPA);
+ if (rc != sizeof(version)) {
+ CDEBUG(D_INODE, "Can't get version, rc %d\n", rc);
+ version = 0;
+ }
+ return version;
+}
+EXPORT_SYMBOL(dt_version_get);
+
+/* list of all supported index types */
+
+/* directories */
const struct dt_index_features dt_directory_features;
EXPORT_SYMBOL(dt_directory_features);
+
+/* scrub iterator */
+const struct dt_index_features dt_otable_features;
+EXPORT_SYMBOL(dt_otable_features);
+
+/* accounting indexes */
+const struct dt_index_features dt_acct_features = {
+ .dif_flags = DT_IND_UPDATE,
+ .dif_keysize_min = sizeof(__u64), /* 64-bit uid/gid */
+ .dif_keysize_max = sizeof(__u64), /* 64-bit uid/gid */
+ .dif_recsize_min = sizeof(struct acct_rec), /* 32 bytes */
+ .dif_recsize_max = sizeof(struct acct_rec), /* 32 bytes */
+ .dif_ptrsize = 4
+};
+EXPORT_SYMBOL(dt_acct_features);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff