static int __mdd_lookup(const struct lu_env *env, struct md_object *pobj,
const struct lu_name *lname, struct lu_fid* fid,
int mask);
+static int mdd_links_add(const struct lu_env *env,
+ struct mdd_object *mdd_obj,
+ const struct lu_fid *pfid,
+ const struct lu_name *lname,
+ struct thandle *handle);
+static int mdd_links_rename(const struct lu_env *env,
+ struct mdd_object *mdd_obj,
+ const struct lu_fid *oldpfid,
+ const struct lu_name *oldlname,
+ const struct lu_fid *newpfid,
+ const struct lu_name *newlname,
+ struct thandle *handle);
+
static int
__mdd_lookup_locked(const struct lu_env *env, struct md_object *pobj,
const struct lu_name *lname, struct lu_fid* fid, int mask)
return rc;
}
-static int mdd_lookup(const struct lu_env *env,
- struct md_object *pobj, const struct lu_name *lname,
- struct lu_fid* fid, struct md_op_spec *spec)
+int mdd_lookup(const struct lu_env *env,
+ struct md_object *pobj, const struct lu_name *lname,
+ struct lu_fid* fid, struct md_op_spec *spec)
{
int rc;
ENTRY;
RETURN(rc);
}
-
static int mdd_parent_fid(const struct lu_env *env, struct mdd_object *obj,
struct lu_fid *fid)
{
}
/*
- * For root fid use special function, whcih does not compare version component
- * of fid. Vresion component is different for root fids on all MDTs.
+ * For root fid use special function, which does not compare version component
+ * of fid. Version component is different for root fids on all MDTs.
*/
-static int mdd_is_root(struct mdd_device *mdd, const struct lu_fid *fid)
+int mdd_is_root(struct mdd_device *mdd, const struct lu_fid *fid)
{
return fid_seq(&mdd->mdd_root_fid) == fid_seq(fid) &&
fid_oid(&mdd->mdd_root_fid) == fid_oid(fid);
RETURN(rc);
}
+/** Store a namespace change changelog record
+ * If this fails, we must fail the whole transaction; we don't
+ * want the change to commit without the log entry.
+ * \param target - mdd_object of change
+ * \param parent - parent dir/object
+ * \param tf - target lu_fid, overrides fid of \a target if this is non-null
+ * \param tname - target name string
+ * \param handle - transacion handle
+ */
+static int mdd_changelog_ns_store(const struct lu_env *env,
+ struct mdd_device *mdd,
+ enum changelog_rec_type type,
+ struct mdd_object *target,
+ struct mdd_object *parent,
+ const struct lu_fid *tf,
+ const struct lu_name *tname,
+ struct thandle *handle)
+{
+ const struct lu_fid *tfid;
+ const struct lu_fid *tpfid = mdo2fid(parent);
+ struct llog_changelog_rec *rec;
+ struct lu_buf *buf;
+ int reclen;
+ int rc;
+ ENTRY;
+
+ if (!(mdd->mdd_cl.mc_flags & CLM_ON))
+ RETURN(0);
+
+ LASSERT(parent != NULL);
+ LASSERT(tname != NULL);
+ LASSERT(handle != NULL);
+
+ /* target */
+ reclen = llog_data_len(sizeof(*rec) + tname->ln_namelen);
+ buf = mdd_buf_alloc(env, reclen);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+ rec = (struct llog_changelog_rec *)buf->lb_buf;
+
+ rec->cr_flags = CLF_VERSION;
+ rec->cr_type = (__u32)type;
+ tfid = tf ? tf : mdo2fid(target);
+ rec->cr_tfid = *tfid;
+ rec->cr_pfid = *tpfid;
+ rec->cr_namelen = tname->ln_namelen;
+ memcpy(rec->cr_name, tname->ln_name, rec->cr_namelen);
+ if (likely(target))
+ target->mod_cltime = cfs_time_current_64();
+
+ rc = mdd_changelog_llog_write(mdd, rec, handle);
+ if (rc < 0) {
+ CERROR("changelog failed: rc=%d, op%d %s c"DFID" p"DFID"\n",
+ rc, type, tname->ln_name, PFID(tfid), PFID(tpfid));
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj,
struct md_object *src_obj, const struct lu_name *lname,
struct md_attr *ma)
rc = mdd_la_get(env, mdd_tobj, la_tmp, BYPASS_CAPA);
if (!rc) {
+ void *data = NULL;
+ mdd_data_get(env, mdd_tobj, &data);
quota_opc = FSFILT_OP_LINK;
mdd_quota_wrapper(la_tmp, qids);
/* get block quota for parent */
lquota_chkquota(mds_quota_interface_ref, obd,
qids[USRQUOTA], qids[GRPQUOTA], 1,
- &rec_pending, NULL, LQUOTA_FLAGS_BLK);
+ &rec_pending, NULL, LQUOTA_FLAGS_BLK,
+ data, 1);
}
}
#endif
la->la_valid = LA_CTIME;
rc = mdd_attr_check_set_internal(env, mdd_sobj, la, handle, 0);
+ if (rc == 0)
+ mdd_links_add(env, mdd_sobj, mdo2fid(mdd_tobj), lname, handle);
+
EXIT;
out_unlock:
mdd_write_unlock(env, mdd_sobj);
mdd_pdo_write_unlock(env, mdd_tobj, dlh);
out_trans:
+ if (rc == 0)
+ rc = mdd_changelog_ns_store(env, mdd, CL_HARDLINK, mdd_sobj,
+ mdd_tobj, NULL, lname, handle);
mdd_trans_stop(env, mdd, rc, handle);
out_pending:
#ifdef HAVE_QUOTA_SUPPORT
if (rec_pending)
lquota_pending_commit(mds_quota_interface_ref, obd,
qids[USRQUOTA], qids[GRPQUOTA],
- 1, 1);
+ rec_pending, 1);
/* Trigger dqacq for the parent owner. If failed,
* the next call for lquota_chkquota will process it. */
lquota_adjust(mds_quota_interface_ref, obd, 0, qids, rc,
unsigned int qpids[MAXQUOTAS] = { 0, 0 };
int quota_opc = 0;
#endif
- int rc, is_dir;
+ int is_dir = S_ISDIR(ma->ma_attr.la_mode);
+ int rc;
ENTRY;
LASSERTF(mdd_object_exists(mdd_cobj) > 0, "FID is "DFID"\n",
if (IS_ERR(handle))
RETURN(PTR_ERR(handle));
-
dlh = mdd_pdo_write_lock(env, mdd_pobj, name, MOR_TGT_PARENT);
if (dlh == NULL)
GOTO(out_trans, rc = -ENOMEM);
mdd_write_lock(env, mdd_cobj, MOR_TGT_CHILD);
- is_dir = S_ISDIR(ma->ma_attr.la_mode);
rc = mdd_unlink_sanity_check(env, mdd_pobj, mdd_cobj, ma);
if (rc)
GOTO(cleanup, rc);
obd_set_info_async(mdd2obd_dev(mdd)->u.mds.mds_osc_exp,
sizeof(KEY_UNLINKED), KEY_UNLINKED, 0,
NULL, NULL);
+ if (!is_dir)
+ /* old files may not have link ea; ignore errors */
+ mdd_links_rename(env, mdd_cobj, mdo2fid(mdd_pobj),
+ lname, NULL, NULL, handle);
+
EXIT;
cleanup:
mdd_write_unlock(env, mdd_cobj);
mdd_pdo_write_unlock(env, mdd_pobj, dlh);
out_trans:
+ if (rc == 0)
+ rc = mdd_changelog_ns_store(env, mdd,
+ is_dir ? CL_RMDIR : CL_UNLINK,
+ mdd_cobj, mdd_pobj, NULL, lname,
+ handle);
+
mdd_trans_stop(env, mdd, rc, handle);
#ifdef HAVE_QUOTA_SUPPORT
if (quota_opc)
rc = mdd_la_get(env, mdd_obj, la_tmp, BYPASS_CAPA);
if (!rc) {
+ void *data = NULL;
+ mdd_data_get(env, mdd_obj, &data);
quota_opc = FSFILT_OP_LINK;
mdd_quota_wrapper(la_tmp, qids);
/* get block quota for parent */
lquota_chkquota(mds_quota_interface_ref, obd,
qids[USRQUOTA], qids[GRPQUOTA],
1, &rec_pending, NULL,
- LQUOTA_FLAGS_BLK);
+ LQUOTA_FLAGS_BLK, data, 1);
}
} else {
uc->mu_cap |= CFS_CAP_SYS_RESOURCE_MASK;
if (rec_pending)
lquota_pending_commit(mds_quota_interface_ref,
obd, qids[USRQUOTA],
- qids[GRPQUOTA], 1, 1);
+ qids[GRPQUOTA],
+ rec_pending, 1);
/* Trigger dqacq for the parent owner. If failed,
* the next call for lquota_chkquota will process it*/
lquota_adjust(mds_quota_interface_ref, obd, 0, qids,
RETURN(rc);
}
+/* Partial rename op on slave MDD */
static int mdd_rename_tgt(const struct lu_env *env,
struct md_object *pobj, struct md_object *tobj,
const struct lu_fid *lf, const struct lu_name *lname,
rc = mdd_la_get(env, mdd_tpobj, la_tmp, BYPASS_CAPA);
if (!rc) {
+ void *data = NULL;
+ mdd_data_get(env, mdd_tpobj, &data);
quota_opc = FSFILT_OP_LINK;
mdd_quota_wrapper(la_tmp, qpids);
/* get block quota for target parent */
lquota_chkquota(mds_quota_interface_ref, obd,
qpids[USRQUOTA], qpids[GRPQUOTA], 1,
- &rec_pending, NULL, LQUOTA_FLAGS_BLK);
+ &rec_pending, NULL, LQUOTA_FLAGS_BLK,
+ data, 1);
}
}
#endif
mdd_write_unlock(env, mdd_tobj);
mdd_pdo_write_unlock(env, mdd_tpobj, dlh);
out_trans:
+ if (rc == 0)
+ /* Bare EXT record with no RENAME in front of it signifies
+ a partial slave op */
+ rc = mdd_changelog_ns_store(env, mdd, CL_EXT, mdd_tobj,
+ mdd_tpobj, NULL, lname, handle);
+
mdd_trans_stop(env, mdd, rc, handle);
out_pending:
#ifdef HAVE_QUOTA_SUPPORT
lquota_pending_commit(mds_quota_interface_ref, obd,
qpids[USRQUOTA],
qpids[GRPQUOTA],
- 1, 1);
+ rec_pending, 1);
if (quota_opc)
/* Trigger dqrel/dqacq on the target owner of child and
* parent. If failed, the next call for lquota_chkquota
RETURN(rc);
}
+/* Get fid from name and parent */
static int
__mdd_lookup(const struct lu_env *env, struct md_object *pobj,
const struct lu_name *lname, struct lu_fid* fid, int mask)
if (likely(S_ISDIR(mdd_object_type(mdd_obj)) &&
dt_try_as_dir(env, dir))) {
+
rc = dir->do_index_ops->dio_lookup(env, dir,
(struct dt_rec *)pack, key,
mdd_object_capa(env, mdd_obj));
}
int mdd_object_initialize(const struct lu_env *env, const struct lu_fid *pfid,
- struct mdd_object *child, struct md_attr *ma,
- struct thandle *handle, const struct md_op_spec *spec)
+ const struct lu_name *lname, struct mdd_object *child,
+ struct md_attr *ma, struct thandle *handle,
+ const struct md_op_spec *spec)
{
int rc;
ENTRY;
}
}
}
+ if (rc == 0)
+ mdd_links_add(env, child, pfid, lname, handle);
+
RETURN(rc);
}
/* get file quota for child */
lquota_chkquota(mds_quota_interface_ref, obd,
qcids[USRQUOTA], qcids[GRPQUOTA], 1,
- &inode_pending, NULL, 0);
+ &inode_pending, NULL, 0, NULL, 0);
switch (ma->ma_attr.la_mode & S_IFMT) {
case S_IFLNK:
case S_IFDIR:
qcids[USRQUOTA], qcids[GRPQUOTA],
block_count,
&block_pending, NULL,
- LQUOTA_FLAGS_BLK);
+ LQUOTA_FLAGS_BLK, NULL, 0);
if (!same)
lquota_chkquota(mds_quota_interface_ref, obd,
qpids[USRQUOTA], qpids[GRPQUOTA], 1,
&parent_pending, NULL,
- LQUOTA_FLAGS_BLK);
+ LQUOTA_FLAGS_BLK, NULL, 0);
}
}
#endif
}
#endif
- rc = mdd_object_initialize(env, mdo2fid(mdd_pobj),
+ rc = mdd_object_initialize(env, mdo2fid(mdd_pobj), lname,
son, ma, handle, spec);
mdd_write_unlock(env, son);
if (rc)
mdd_pdo_write_unlock(env, mdd_pobj, dlh);
out_trans:
+ if (rc == 0)
+ rc = mdd_changelog_ns_store(env, mdd,
+ S_ISDIR(attr->la_mode) ? CL_MKDIR :
+ S_ISREG(attr->la_mode) ? CL_CREATE :
+ S_ISLNK(attr->la_mode) ? CL_SOFTLINK : CL_MKNOD,
+ son, mdd_pobj, NULL, lname, handle);
mdd_trans_stop(env, mdd, rc, handle);
out_free:
/* finis lov_create stuff, free all temporary data */
if (inode_pending)
lquota_pending_commit(mds_quota_interface_ref, obd,
qcids[USRQUOTA], qcids[GRPQUOTA],
- 1, 0);
+ inode_pending, 0);
if (block_pending)
lquota_pending_commit(mds_quota_interface_ref, obd,
qcids[USRQUOTA], qcids[GRPQUOTA],
- block_count, 1);
+ block_pending, 1);
if (parent_pending)
lquota_pending_commit(mds_quota_interface_ref, obd,
qpids[USRQUOTA], qpids[GRPQUOTA],
- 1, 1);
+ parent_pending, 1);
/* Trigger dqacq on the owner of child and parent. If failed,
* the next call for lquota_chkquota will process it. */
lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc,
const char *sname = lsname->ln_name;
const char *tname = ltname->ln_name;
struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
- struct mdd_object *mdd_spobj = md2mdd_obj(src_pobj);
+ struct mdd_object *mdd_spobj = md2mdd_obj(src_pobj); /* source parent */
struct mdd_object *mdd_tpobj = md2mdd_obj(tgt_pobj);
struct mdd_device *mdd = mdo2mdd(src_pobj);
- struct mdd_object *mdd_sobj = NULL;
+ struct mdd_object *mdd_sobj = NULL; /* source object */
struct mdd_object *mdd_tobj = NULL;
struct dynlock_handle *sdlh, *tdlh;
struct thandle *handle;
rc = mdd_la_get(env, mdd_tpobj, la_tmp,
BYPASS_CAPA);
if (!rc) {
+ void *data = NULL;
+ mdd_data_get(env, mdd_tpobj, &data);
quota_opc = FSFILT_OP_LINK;
mdd_quota_wrapper(la_tmp, qtpids);
/* get block quota for target parent */
obd, qtpids[USRQUOTA],
qtpids[GRPQUOTA], 1,
&rec_pending, NULL,
- LQUOTA_FLAGS_BLK);
+ LQUOTA_FLAGS_BLK,
+ data, 1);
}
}
}
if (rc)
GOTO(cleanup, rc);
+ /* Remove source name from source directory */
rc = __mdd_index_delete(env, mdd_spobj, sname, is_dir, handle,
mdd_object_capa(env, mdd_spobj));
if (rc)
GOTO(cleanup, rc);
}
- /*
+ /* Remove target name from target directory
* Here tobj can be remote one, so we do index_delete unconditionally
* and -ENOENT is allowed.
*/
if (rc != 0 && rc != -ENOENT)
GOTO(cleanup, rc);
+ /* Insert new fid with target name into target dir */
rc = __mdd_index_insert(env, mdd_tpobj, lf, tname, is_dir, handle,
mdd_object_capa(env, mdd_tpobj));
if (rc)
GOTO(cleanup, rc);
}
- /*
+ /* Remove old target object
* For tobj is remote case cmm layer has processed
* and set tobj to NULL then. So when tobj is NOT NULL,
* it must be local one.
handle, 0);
}
+ if (rc == 0 && mdd_sobj) {
+ mdd_write_lock(env, mdd_sobj, MOR_SRC_CHILD);
+ rc = mdd_links_rename(env, mdd_sobj, mdo2fid(mdd_spobj), lsname,
+ mdo2fid(mdd_tpobj), ltname, handle);
+ if (rc == -ENOENT)
+ /* Old files might not have EA entry */
+ mdd_links_add(env, mdd_sobj, mdo2fid(mdd_spobj),
+ lsname, handle);
+ mdd_write_unlock(env, mdd_sobj);
+ /* We don't fail the transaction if the link ea can't be
+ updated -- fid2path will use alternate lookup method. */
+ rc = 0;
+ }
+
EXIT;
cleanup:
if (likely(tdlh) && sdlh != tdlh)
if (likely(sdlh))
mdd_pdo_write_unlock(env, mdd_spobj, sdlh);
cleanup_unlocked:
+ if (rc == 0)
+ rc = mdd_changelog_ns_store(env, mdd, CL_RENAME, mdd_tobj,
+ mdd_spobj, lf, lsname, handle);
+ if (rc == 0)
+ rc = mdd_changelog_ns_store(env, mdd, CL_EXT, mdd_tobj,
+ mdd_tpobj, lf, ltname, handle);
+
mdd_trans_stop(env, mdd, rc, handle);
if (mdd_sobj)
mdd_object_put(env, mdd_sobj);
lquota_pending_commit(mds_quota_interface_ref, obd,
qtpids[USRQUOTA],
qtpids[GRPQUOTA],
- 1, 1);
+ rec_pending, 1);
/* Trigger dqrel on the source owner of parent.
* If failed, the next call for lquota_chkquota will
* process it. */
return rc;
}
+/** enable/disable storing of hardlink info */
+int mdd_linkea_enable = 1;
+CFS_MODULE_PARM(mdd_linkea_enable, "d", int, 0644,
+ "record hardlink info in EAs");
+
+/** Read the link EA into a temp buffer.
+ * Uses the name_buf since it is generally large.
+ * \retval IS_ERR err
+ * \retval ptr to \a lu_buf (always \a mti_big_buf)
+ */
+struct lu_buf *mdd_links_get(const struct lu_env *env,
+ struct mdd_object *mdd_obj)
+{
+ struct lu_buf *buf;
+ struct lustre_capa *capa;
+ struct link_ea_header *leh;
+ int rc;
+
+ /* First try a small buf */
+ buf = mdd_buf_alloc(env, CFS_PAGE_SIZE);
+ if (buf->lb_buf == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ capa = mdd_object_capa(env, mdd_obj);
+ rc = mdo_xattr_get(env, mdd_obj, buf, XATTR_NAME_LINK, capa);
+ if (rc == -ERANGE) {
+ /* Buf was too small, figure out what we need. */
+ buf->lb_buf = NULL;
+ buf->lb_len = 0;
+ rc = mdo_xattr_get(env, mdd_obj, buf, XATTR_NAME_LINK, capa);
+ if (rc < 0)
+ return ERR_PTR(rc);
+ buf = mdd_buf_alloc(env, rc);
+ if (buf->lb_buf == NULL)
+ return ERR_PTR(-ENOMEM);
+ rc = mdo_xattr_get(env, mdd_obj, buf, XATTR_NAME_LINK, capa);
+ }
+ if (rc < 0)
+ return ERR_PTR(rc);
+
+ leh = buf->lb_buf;
+ if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
+ leh->leh_magic = LINK_EA_MAGIC;
+ leh->leh_reccount = __swab32(leh->leh_reccount);
+ leh->leh_len = __swab64(leh->leh_len);
+ /* entries are swabbed by mdd_lee_unpack */
+ }
+ if (leh->leh_magic != LINK_EA_MAGIC)
+ return ERR_PTR(-EINVAL);
+ if (leh->leh_reccount == 0)
+ return ERR_PTR(-ENODATA);
+
+ return buf;
+}
+
+/** Pack a link_ea_entry.
+ * All elements are stored as chars to avoid alignment issues.
+ * Numbers are always big-endian
+ * \param packbuf is a temp fid buffer
+ * \retval record length
+ */
+static int mdd_lee_pack(struct link_ea_entry *lee, const struct lu_name *lname,
+ const struct lu_fid *pfid, struct lu_fid* packbuf)
+{
+ char *ptr;
+ int reclen;
+
+ fid_pack(&lee->lee_parent_fid, pfid, packbuf);
+ ptr = (char *)&lee->lee_parent_fid + lee->lee_parent_fid.fp_len;
+ strncpy(ptr, lname->ln_name, lname->ln_namelen);
+ reclen = lee->lee_parent_fid.fp_len + lname->ln_namelen +
+ sizeof(lee->lee_reclen);
+ lee->lee_reclen[0] = (reclen >> 8) & 0xff;
+ lee->lee_reclen[1] = reclen & 0xff;
+ return reclen;
+}
+
+void mdd_lee_unpack(const struct link_ea_entry *lee, int *reclen,
+ struct lu_name *lname, struct lu_fid *pfid)
+{
+ *reclen = (lee->lee_reclen[0] << 8) | lee->lee_reclen[1];
+ fid_unpack(&lee->lee_parent_fid, pfid);
+ lname->ln_name = (char *)&lee->lee_parent_fid +
+ lee->lee_parent_fid.fp_len;
+ lname->ln_namelen = *reclen - lee->lee_parent_fid.fp_len -
+ sizeof(lee->lee_reclen);
+}
+
+/** Add a record to the end of link ea buf */
+static int __mdd_links_add(const struct lu_env *env, struct lu_buf *buf,
+ const struct lu_fid *pfid,
+ const struct lu_name *lname)
+{
+ struct link_ea_header *leh;
+ struct link_ea_entry *lee;
+ int reclen;
+
+ if (lname == NULL || pfid == NULL)
+ return -EINVAL;
+
+ /* Make sure our buf is big enough for the new one */
+ leh = buf->lb_buf;
+ reclen = lname->ln_namelen + sizeof(struct link_ea_entry);
+ if (leh->leh_len + reclen > buf->lb_len) {
+ if (mdd_buf_grow(env, leh->leh_len + reclen) < 0)
+ return -ENOMEM;
+ }
+
+ leh = buf->lb_buf;
+ lee = buf->lb_buf + leh->leh_len;
+ reclen = mdd_lee_pack(lee, lname, pfid, &mdd_env_info(env)->mti_fid2);
+ leh->leh_len += reclen;
+ leh->leh_reccount++;
+ return 0;
+}
+
+/* For pathologic linkers, we don't want to spend lots of time scanning the
+ * link ea. Limit ourseleves to something reasonable; links not in the EA
+ * can be looked up via (slower) parent lookup.
+ */
+#define LINKEA_MAX_COUNT 128
+
+static int mdd_links_add(const struct lu_env *env,
+ struct mdd_object *mdd_obj,
+ const struct lu_fid *pfid,
+ const struct lu_name *lname,
+ struct thandle *handle)
+{
+ struct lu_buf *buf;
+ struct link_ea_header *leh;
+ int rc;
+ ENTRY;
+
+ if (!mdd_linkea_enable)
+ RETURN(0);
+
+ buf = mdd_links_get(env, mdd_obj);
+ if (IS_ERR(buf)) {
+ rc = PTR_ERR(buf);
+ if (rc != -ENODATA) {
+ CERROR("link_ea read failed %d "DFID"\n", rc,
+ PFID(mdd_object_fid(mdd_obj)));
+ RETURN (rc);
+ }
+ /* empty EA; start one */
+ buf = mdd_buf_alloc(env, CFS_PAGE_SIZE);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+ leh = buf->lb_buf;
+ leh->leh_magic = LINK_EA_MAGIC;
+ leh->leh_len = sizeof(struct link_ea_header);
+ leh->leh_reccount = 0;
+ }
+
+ leh = buf->lb_buf;
+ if (leh->leh_reccount > LINKEA_MAX_COUNT)
+ RETURN(-EOVERFLOW);
+
+ rc = __mdd_links_add(env, buf, pfid, lname);
+ if (rc)
+ RETURN(rc);
+
+ leh = buf->lb_buf;
+ rc = __mdd_xattr_set(env, mdd_obj,
+ mdd_buf_get_const(env, buf->lb_buf, leh->leh_len),
+ XATTR_NAME_LINK, 0, handle);
+ if (rc)
+ CERROR("link_ea add failed %d "DFID"\n", rc,
+ PFID(mdd_object_fid(mdd_obj)));
+
+ if (buf->lb_vmalloc)
+ /* if we vmalloced a large buffer drop it */
+ mdd_buf_put(buf);
+
+ RETURN (rc);
+}
+
+static int mdd_links_rename(const struct lu_env *env,
+ struct mdd_object *mdd_obj,
+ const struct lu_fid *oldpfid,
+ const struct lu_name *oldlname,
+ const struct lu_fid *newpfid,
+ const struct lu_name *newlname,
+ struct thandle *handle)
+{
+ struct lu_buf *buf;
+ struct link_ea_header *leh;
+ struct link_ea_entry *lee;
+ struct lu_name *tmpname = &mdd_env_info(env)->mti_name;
+ struct lu_fid *tmpfid = &mdd_env_info(env)->mti_fid;
+ int reclen = 0;
+ int count;
+ int rc, rc2 = 0;
+ ENTRY;
+
+ if (!mdd_linkea_enable)
+ RETURN(0);
+
+ if (mdd_obj->mod_flags & DEAD_OBJ)
+ /* No more links, don't bother */
+ RETURN(0);
+
+ buf = mdd_links_get(env, mdd_obj);
+ if (IS_ERR(buf)) {
+ rc = PTR_ERR(buf);
+ CERROR("link_ea read failed %d "DFID"\n",
+ rc, PFID(mdd_object_fid(mdd_obj)));
+ RETURN(rc);
+ }
+ leh = buf->lb_buf;
+ lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
+
+ /* Find the old record */
+ for(count = 0; count <= leh->leh_reccount; count++) {
+ mdd_lee_unpack(lee, &reclen, tmpname, tmpfid);
+ if (tmpname->ln_namelen == oldlname->ln_namelen &&
+ lu_fid_eq(tmpfid, oldpfid) &&
+ (strncmp(tmpname->ln_name, oldlname->ln_name,
+ tmpname->ln_namelen) == 0))
+ break;
+ lee = (struct link_ea_entry *)((char *)lee + reclen);
+ }
+ if (count > leh->leh_reccount) {
+ CDEBUG(D_INODE, "Old link_ea name '%.*s' not found\n",
+ oldlname->ln_namelen, oldlname->ln_name);
+ GOTO(out, rc = -ENOENT);
+ }
+
+ /* Remove the old record */
+ leh->leh_reccount--;
+ leh->leh_len -= reclen;
+ memmove(lee, (char *)lee + reclen, (char *)leh + leh->leh_len -
+ (char *)lee);
+
+ /* If renaming, add the new record */
+ if (newpfid != NULL) {
+ /* if the add fails, we still delete the out-of-date old link */
+ rc2 = __mdd_links_add(env, buf, newpfid, newlname);
+ leh = buf->lb_buf;
+ }
+
+ rc = __mdd_xattr_set(env, mdd_obj,
+ mdd_buf_get_const(env, buf->lb_buf, leh->leh_len),
+ XATTR_NAME_LINK, 0, handle);
+
+out:
+ if (rc == 0)
+ rc = rc2;
+ if (rc)
+ CDEBUG(D_INODE, "link_ea mv/unlink '%.*s' failed %d "DFID"\n",
+ oldlname->ln_namelen, oldlname->ln_name, rc,
+ PFID(mdd_object_fid(mdd_obj)));
+
+ if (buf->lb_vmalloc)
+ /* if we vmalloced a large buffer drop it */
+ mdd_buf_put(buf);
+
+ RETURN (rc);
+}
+
const struct md_dir_operations mdd_dir_ops = {
.mdo_is_subdir = mdd_is_subdir,
.mdo_lookup = mdd_lookup,
git://git.whamcloud.com / fs / lustre-release.git / blobdiff