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/*
Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include "quota.h"
#include "quotad-aggregator.h"
#include <glusterfs/common-utils.h>
int
qd_notify(xlator_t *this, int32_t event, void *data, ...)
{
switch (event) {
case GF_EVENT_PARENT_UP:
quotad_aggregator_init(this);
}
default_notify(this, event, data);
return 0;
}
int32_t
mem_acct_init(xlator_t *this)
{
int ret = -1;
if (!this)
return ret;
ret = xlator_mem_acct_init(this, gf_quota_mt_end + 1);
if (0 != ret) {
gf_log(this->name, GF_LOG_WARNING,
"Memory accounting "
"init failed");
return ret;
}
return ret;
}
int32_t
qd_lookup_cbk(call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
int32_t op_errno, inode_t *inode, struct iatt *buf, dict_t *xdata,
struct iatt *postparent)
{
quotad_aggregator_lookup_cbk_t lookup_cbk = NULL;
gfs3_lookup_rsp rsp = {
0,
};
lookup_cbk = cookie;
rsp.op_ret = op_ret;
rsp.op_errno = op_errno;
gf_stat_from_iatt(&rsp.postparent, postparent);
GF_PROTOCOL_DICT_SERIALIZE(this, xdata, (&rsp.xdata.xdata_val),
rsp.xdata.xdata_len, rsp.op_errno, out);
gf_stat_from_iatt(&rsp.stat, buf);
out:
lookup_cbk(this, frame, &rsp);
GF_FREE(rsp.xdata.xdata_val);
inode_unref(inode);
return 0;
}
xlator_t *
qd_find_subvol(xlator_t *this, char *volume_uuid)
{
xlator_list_t *child = NULL;
xlator_t *subvol = NULL;
char key[1024];
int keylen = 0;
char *optstr = NULL;
if (!this || !volume_uuid)
goto out;
for (child = this->children; child; child = child->next) {
keylen = snprintf(key, sizeof(key), "%s.volume-id",
child->xlator->name);
if (dict_get_strn(this->options, key, keylen, &optstr) < 0)
continue;
if (strcmp(optstr, volume_uuid) == 0) {
subvol = child->xlator;
break;
}
}
out:
return subvol;
}
int
qd_nameless_lookup(xlator_t *this, call_frame_t *frame, gfs3_lookup_req *req,
dict_t *xdata, quotad_aggregator_lookup_cbk_t lookup_cbk)
{
gfs3_lookup_rsp rsp = {
0,
};
int op_errno = 0, ret = -1;
loc_t loc = {
0,
};
quotad_aggregator_state_t *state = NULL;
xlator_t *subvol = NULL;
char *volume_uuid = NULL;
state = frame->root->state;
frame->root->op = GF_FOP_LOOKUP;
loc.inode = inode_new(state->itable);
if (loc.inode == NULL) {
op_errno = ENOMEM;
goto out;
}
memcpy(loc.gfid, req->gfid, 16);
ret = dict_get_strn(xdata, "volume-uuid", SLEN("volume-uuid"),
&volume_uuid);
if (ret < 0) {
op_errno = EINVAL;
goto out;
}
ret = dict_set_int8(xdata, QUOTA_READ_ONLY_KEY, 1);
if (ret < 0) {
gf_msg(this->name, GF_LOG_WARNING, ENOMEM, Q_MSG_ENOMEM,
"dict set failed");
ret = -ENOMEM;
goto out;
}
subvol = qd_find_subvol(this, volume_uuid);
if (subvol == NULL) {
op_errno = EINVAL;
goto out;
}
STACK_WIND_COOKIE(frame, qd_lookup_cbk, lookup_cbk, subvol,
subvol->fops->lookup, &loc, xdata);
return 0;
out:
rsp.op_ret = -1;
rsp.op_errno = op_errno;
lookup_cbk(this, frame, &rsp);
inode_unref(loc.inode);
return 0;
}
int
qd_reconfigure(xlator_t *this, dict_t *options)
{
/* As of now quotad is restarted upon alteration of volfile */
return 0;
}
void
qd_fini(xlator_t *this)
{
quota_priv_t *priv = NULL;
if (this == NULL || this->private == NULL)
goto out;
priv = this->private;
if (priv->rpcsvc) {
GF_FREE(priv->rpcsvc);
priv->rpcsvc = NULL;
}
GF_FREE(priv);
out:
return;
}
int32_t
qd_init(xlator_t *this)
{
int32_t ret = -1;
quota_priv_t *priv = NULL;
if (NULL == this->children) {
gf_log(this->name, GF_LOG_ERROR,
"FATAL: quota (%s) not configured for min of 1 child",
this->name);
ret = -1;
goto err;
}
QUOTA_ALLOC_OR_GOTO(priv, quota_priv_t, err);
LOCK_INIT(&priv->lock);
this->private = priv;
ret = 0;
err:
if (ret) {
GF_FREE(priv);
}
return ret;
}
struct xlator_fops fops = {};
struct xlator_cbks cbks = {};
struct volume_options options[] = {
{.key = {"transport-type"},
.value = {"rpc", "rpc-over-rdma", "tcp", "socket", "ib-verbs", "unix",
"ib-sdp", "tcp/server", "ib-verbs/server", "rdma",
"rdma*([ \t]),*([ \t])socket", "rdma*([ \t]),*([ \t])tcp",
"tcp*([ \t]),*([ \t])rdma", "socket*([ \t]),*([ \t])rdma"},
.type = GF_OPTION_TYPE_STR},
{
.key = {"transport.*"},
.type = GF_OPTION_TYPE_ANY,
},
{.key = {NULL}},
};
xlator_api_t xlator_api = {
.init = qd_init,
.fini = qd_fini,
.reconfigure = qd_reconfigure,
.notify = qd_notify,
.mem_acct_init = mem_acct_init,
.op_version = {1},
.fops = &fops,
.cbks = &cbks,
.options = options,
.identifier = "quotad",
.category = GF_MAINTAINED,
};
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