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authorKaleb S. KEITHLEY <kkeithle@redhat.com>2012-09-18 14:07:40 -0400
committerAnand Avati <avati@redhat.com>2013-07-29 22:22:21 -0700
commit04536e53082cdff5cd10a804502347ee83490c81 (patch)
treed469ccb6e27fa1dcffdee89e16677416ed0cd60c /libglusterfs/src/client_t.c
parentc2064eff8919af6afdb38dbdb059bfc099e0afd9 (diff)
libglusterfs/client_t client_t implementation, phase 1
Implementation of client_t The feature page for client_t is at http://www.gluster.org/community/documentation/index.php/Planning34/client_t In addition to adding libglusterfs/client_t.[ch] it also extracts/moves the locktable functionality from xlators/protocol/server to libglusterfs, where it is used; thus it may now be shared by other xlators too. This patch is large as it is. Hooking up the state dump is left to do in phase 2 of this patch set. (N.B. this change/patch-set supercedes previous change 3689, which was corrupted during a rebase. That change will be abandoned.) BUG: 849630 Change-Id: I1433743190630a6d8119a72b81439c0c4c990340 Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/3957 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amarts@redhat.com>
Diffstat (limited to 'libglusterfs/src/client_t.c')
-rw-r--r--libglusterfs/src/client_t.c881
1 files changed, 881 insertions, 0 deletions
diff --git a/libglusterfs/src/client_t.c b/libglusterfs/src/client_t.c
new file mode 100644
index 00000000000..f0d66da3a3d
--- /dev/null
+++ b/libglusterfs/src/client_t.c
@@ -0,0 +1,881 @@
+/*
+ Copyright (c) 2008-2013 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 "glusterfs.h"
+#include "dict.h"
+#include "statedump.h"
+#include "lock-table.h"
+#include "rpcsvc.h"
+#include "client_t.h"
+
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+
+static int
+gf_client_chain_client_entries (cliententry_t *entries, uint32_t startidx,
+ uint32_t endcount)
+{
+ uint32_t i = 0;
+
+ if (!entries) {
+ gf_log_callingfn ("client_t", GF_LOG_WARNING, "!entries");
+ return -1;
+ }
+
+ /* Chain only till the second to last entry because we want to
+ * ensure that the last entry has GF_CLIENTTABLE_END.
+ */
+ for (i = startidx; i < (endcount - 1); i++)
+ entries[i].next_free = i + 1;
+
+ /* i has already been incremented upto the last entry. */
+ entries[i].next_free = GF_CLIENTTABLE_END;
+
+ return 0;
+}
+
+
+static int
+gf_client_clienttable_expand (clienttable_t *clienttable, uint32_t nr)
+{
+ cliententry_t *oldclients = NULL;
+ uint32_t oldmax_clients = -1;
+ int ret = -1;
+
+ if (clienttable == NULL || nr < 0) {
+ gf_log_callingfn ("client_t", GF_LOG_ERROR, "invalid argument");
+ ret = EINVAL;
+ goto out;
+ }
+
+ /* expand size by power-of-two...
+ this originally came from .../xlators/protocol/server/src/server.c
+ where it was not commented */
+ nr /= (1024 / sizeof (cliententry_t));
+ nr = gf_roundup_next_power_of_two (nr + 1);
+ nr *= (1024 / sizeof (cliententry_t));
+
+ oldclients = clienttable->cliententries;
+ oldmax_clients = clienttable->max_clients;
+
+ clienttable->cliententries = GF_CALLOC (nr, sizeof (cliententry_t),
+ gf_common_mt_cliententry_t);
+ if (!clienttable->cliententries) {
+ ret = ENOMEM;
+ goto out;
+ }
+ clienttable->max_clients = nr;
+
+ if (oldclients) {
+ uint32_t cpy = oldmax_clients * sizeof (cliententry_t);
+ memcpy (clienttable->cliententries, oldclients, cpy);
+ }
+
+ gf_client_chain_client_entries (clienttable->cliententries, oldmax_clients,
+ clienttable->max_clients);
+
+ /* Now that expansion is done, we must update the client list
+ * head pointer so that the client allocation functions can continue
+ * using the expanded table.
+ */
+ clienttable->first_free = oldmax_clients;
+ GF_FREE (oldclients);
+ ret = 0;
+out:
+ return ret;
+}
+
+
+clienttable_t *
+gf_clienttable_alloc (void)
+{
+ clienttable_t *clienttable = NULL;
+
+ clienttable =
+ GF_CALLOC (1, sizeof (*clienttable), gf_common_mt_clienttable_t);
+ if (!clienttable)
+ return NULL;
+
+ LOCK_INIT (&clienttable->lock);
+ gf_client_clienttable_expand (clienttable, GF_CLIENTTABLE_INITIAL_SIZE);
+ return clienttable;
+}
+
+
+void
+gf_client_clienttable_destroy (clienttable_t *clienttable)
+{
+ struct list_head list = {0, };
+ client_t *client = NULL;
+ cliententry_t *cliententries = NULL;
+ uint32_t client_count = 0;
+ int32_t i = 0;
+
+ INIT_LIST_HEAD (&list);
+
+ if (!clienttable) {
+ gf_log_callingfn ("client_t", GF_LOG_WARNING, "!clienttable");
+ return;
+ }
+
+ LOCK (&clienttable->lock);
+ {
+ client_count = clienttable->max_clients;
+ clienttable->max_clients = 0;
+ cliententries = clienttable->cliententries;
+ clienttable->cliententries = NULL;
+ }
+ UNLOCK (&clienttable->lock);
+
+ if (cliententries != NULL) {
+ for (i = 0; i < client_count; i++) {
+ client = cliententries[i].client;
+ if (client != NULL) {
+ gf_client_unref (client);
+ }
+ }
+
+ GF_FREE (cliententries);
+ LOCK_DESTROY (&clienttable->lock);
+ GF_FREE (clienttable);
+ }
+}
+
+
+client_t *
+gf_client_get (xlator_t *this, rpcsvc_auth_data_t *cred, char *client_uid)
+{
+ client_t *client = NULL;
+ cliententry_t *cliententry = NULL;
+ clienttable_t *clienttable = NULL;
+ unsigned int i = 0;
+
+ if (this == NULL || client_uid == NULL) {
+ gf_log_callingfn ("client_t", GF_LOG_ERROR, "invalid argument");
+ errno = EINVAL;
+ return NULL;
+ }
+
+ gf_log (this->name, GF_LOG_INFO, "client_uid=%s", client_uid);
+
+ clienttable = this->ctx->clienttable;
+
+ LOCK (&clienttable->lock);
+ {
+ for (; i < clienttable->max_clients; i++) {
+ client = clienttable->cliententries[i].client;
+ if (client == NULL)
+ continue;
+ /*
+ * look for matching client_uid, _and_
+ * if auth was used, matching auth flavour and data
+ */
+ if (strcmp (client_uid, client->server_ctx.client_uid) == 0 &&
+ (cred->flavour != AUTH_NONE &&
+ (cred->flavour == client->server_ctx.auth.flavour &&
+ (size_t) cred->datalen == client->server_ctx.auth.len &&
+ memcmp (cred->authdata,
+ client->server_ctx.auth.data,
+ client->server_ctx.auth.len) == 0))) {
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
+ __sync_add_and_fetch(&client->ref.bind, 1);
+#else
+ LOCK (&client->ref.lock);
+ {
+ ++client->ref.bind;
+ }
+ UNLOCK (&client->ref.lock);
+#endif
+ break;
+ }
+ }
+ if (client) {
+ gf_client_ref (client);
+ goto unlock;
+ }
+ client = GF_CALLOC (1, sizeof(client_t), gf_common_mt_client_t);
+ if (client == NULL) {
+ errno = ENOMEM;
+ goto unlock;
+ }
+
+ client->this = this;
+ /* client->server_ctx.lk_version = 0; redundant */
+
+ LOCK_INIT (&client->server_ctx.fdtable_lock);
+ LOCK_INIT (&client->locks_ctx.ltable_lock);
+ LOCK_INIT (&client->scratch_ctx.lock);
+ LOCK_INIT (&client->ref.lock);
+
+ client->server_ctx.client_uid = gf_strdup (client_uid);
+ if (client->server_ctx.client_uid == NULL) {
+ errno = ENOMEM;
+ GF_FREE (client);
+ client = NULL;
+ goto unlock;
+ }
+ client->server_ctx.fdtable = gf_fd_fdtable_alloc ();
+ if (client->server_ctx.fdtable == NULL) {
+ errno = ENOMEM;
+ GF_FREE (client->server_ctx.client_uid);
+ GF_FREE (client);
+ client = NULL;
+ goto unlock;
+ }
+
+ client->locks_ctx.ltable = gf_lock_table_new ();
+ if (client->locks_ctx.ltable == NULL) {
+ errno = ENOMEM;
+ GF_FREE (client->server_ctx.fdtable);
+ GF_FREE (client->server_ctx.client_uid);
+ GF_FREE (client);
+ client = NULL;
+ goto unlock;
+ }
+
+ /* no need to do these atomically here */
+ client->ref.bind = client->ref.count = 1;
+
+ client->server_ctx.auth.flavour = cred->flavour;
+ if (cred->flavour != AUTH_NONE) {
+ client->server_ctx.auth.data =
+ GF_CALLOC (1, cred->datalen, gf_common_mt_client_t);
+ if (client->server_ctx.auth.data == NULL) {
+ errno = ENOMEM;
+ GF_FREE (client->locks_ctx.ltable);
+ GF_FREE (client->server_ctx.fdtable);
+ GF_FREE (client->server_ctx.client_uid);
+ GF_FREE (client);
+ client = NULL;
+ goto unlock;
+ }
+ memcpy (client->server_ctx.auth.data, cred->authdata,
+ cred->datalen);
+ client->server_ctx.auth.len = cred->datalen;
+ }
+
+ client->tbl_index = clienttable->first_free;
+ cliententry = &clienttable->cliententries[client->tbl_index];
+ cliententry->client = client;
+ clienttable->first_free = cliententry->next_free;
+ cliententry->next_free = GF_CLIENTENTRY_ALLOCATED;
+ gf_client_ref (client);
+ }
+unlock:
+ UNLOCK (&clienttable->lock);
+
+ return client;
+}
+
+void
+gf_client_put (client_t *client, gf_boolean_t *detached)
+{
+ gf_boolean_t unref = _gf_false;
+ int bind_ref;
+
+ if (detached)
+ *detached = _gf_false;
+
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
+ bind_ref = __sync_sub_and_fetch(&client->ref.bind, 1);
+#else
+ LOCK (&client->ref.lock);
+ {
+ bind_ref = --client->ref.bind;
+ }
+ UNLOCK (&client->ref.lock);
+#endif
+ if (bind_ref == 0)
+ unref = _gf_true;
+
+ if (unref) {
+ gf_log (THIS->name, GF_LOG_INFO, "Shutting down connection %s",
+ client->server_ctx.client_uid);
+ if (detached)
+ *detached = _gf_true;
+ gf_client_unref (client);
+ }
+}
+
+
+client_t *
+gf_client_ref (client_t *client)
+{
+ if (!client) {
+ gf_log_callingfn ("client_t", GF_LOG_ERROR, "null client");
+ return NULL;
+ }
+
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
+ __sync_add_and_fetch(&client->ref.count, 1);
+#else
+ LOCK (&client->ref.lock);
+ {
+ ++client->ref.count;
+ }
+ UNLOCK (&client->ref.lock);
+#endif
+ return client;
+}
+
+
+static void
+client_destroy (client_t *client)
+{
+ clienttable_t *clienttable = NULL;
+
+ if (client == NULL){
+ gf_log_callingfn ("xlator", GF_LOG_ERROR, "invalid argument");
+ goto out;
+ }
+
+ clienttable = client->this->ctx->clienttable;
+
+ LOCK_DESTROY (&client->server_ctx.fdtable_lock);
+ LOCK_DESTROY (&client->locks_ctx.ltable_lock);
+ LOCK_DESTROY (&client->scratch_ctx.lock);
+ LOCK_DESTROY (&client->ref.lock);
+
+ LOCK (&clienttable->lock);
+ {
+ clienttable->cliententries[client->tbl_index].client = NULL;
+ clienttable->cliententries[client->tbl_index].next_free =
+ clienttable->first_free;
+ clienttable->first_free = client->tbl_index;
+ }
+ UNLOCK (&clienttable->lock);
+
+ GF_FREE (client->server_ctx.auth.data);
+ GF_FREE (client->scratch_ctx.ctx);
+ GF_FREE (client->locks_ctx.ltable);
+ GF_FREE (client->server_ctx.fdtable);
+ GF_FREE (client->server_ctx.client_uid);
+ GF_FREE (client);
+out:
+ return;
+}
+
+
+void
+gf_client_unref (client_t *client)
+{
+ int refcount;
+
+ if (!client) {
+ gf_log_callingfn ("client_t", GF_LOG_ERROR, "client is NULL");
+ return;
+ }
+
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
+ refcount = __sync_sub_and_fetch(&client->ref.count, 1);
+#else
+ LOCK (&client->ref.lock);
+ {
+ refcount = --client->ref.count;
+ }
+ UNLOCK (&client->ref.lock);
+#endif
+ if (refcount == 0) {
+ client_destroy (client);
+ }
+}
+
+
+int
+__client_ctx_set (client_t *client, xlator_t *xlator, uint64_t value)
+{
+ int index = 0;
+ int ret = 0;
+ int set_idx = -1;
+
+ if (!client || !xlator)
+ return -1;
+
+ for (index = 0; index < client->scratch_ctx.count; index++) {
+ if (!client->scratch_ctx.ctx[index].key) {
+ if (set_idx == -1)
+ set_idx = index;
+ /* dont break, to check if key already exists
+ further on */
+ }
+ if (client->scratch_ctx.ctx[index].xl_key == xlator) {
+ set_idx = index;
+ break;
+ }
+ }
+
+ if (set_idx == -1) {
+ gf_log_callingfn ("", GF_LOG_WARNING, "%p %s", client, xlator->name);
+ ret = -1;
+ goto out;
+ }
+
+ client->scratch_ctx.ctx[set_idx].xl_key = xlator;
+ client->scratch_ctx.ctx[set_idx].value = value;
+
+out:
+ return ret;
+}
+
+
+int
+client_ctx_set (client_t *client, xlator_t *xlator, uint64_t value)
+{
+ int ret = 0;
+
+ if (!client || !xlator) {
+ gf_log_callingfn ("", GF_LOG_WARNING, "%p %p", client, xlator);
+ return -1;
+ }
+
+ LOCK (&client->scratch_ctx.lock);
+ {
+ ret = __client_ctx_set (client, xlator, value);
+ }
+ UNLOCK (&client->scratch_ctx.lock);
+
+ return ret;
+}
+
+
+int
+__client_ctx_get (client_t *client, xlator_t *xlator, uint64_t *value)
+{
+ int index = 0;
+ int ret = 0;
+
+ if (!client || !xlator)
+ return -1;
+
+ for (index = 0; index < client->scratch_ctx.count; index++) {
+ if (client->scratch_ctx.ctx[index].xl_key == xlator)
+ break;
+ }
+
+ if (index == client->scratch_ctx.count) {
+ ret = -1;
+ goto out;
+ }
+
+ if (value)
+ *value = client->scratch_ctx.ctx[index].value;
+
+out:
+ return ret;
+}
+
+
+int
+client_ctx_get (client_t *client, xlator_t *xlator, uint64_t *value)
+{
+ int ret = 0;
+
+ if (!client || !xlator)
+ return -1;
+
+ LOCK (&client->scratch_ctx.lock);
+ {
+ ret = __client_ctx_get (client, xlator, value);
+ }
+ UNLOCK (&client->scratch_ctx.lock);
+
+ return ret;
+}
+
+
+int
+__client_ctx_del (client_t *client, xlator_t *xlator, uint64_t *value)
+{
+ int index = 0;
+ int ret = 0;
+
+ if (!client || !xlator)
+ return -1;
+
+ for (index = 0; index < client->scratch_ctx.count; index++) {
+ if (client->scratch_ctx.ctx[index].xl_key == xlator)
+ break;
+ }
+
+ if (index == client->scratch_ctx.count) {
+ ret = -1;
+ goto out;
+ }
+
+ if (value)
+ *value = client->scratch_ctx.ctx[index].value;
+
+ client->scratch_ctx.ctx[index].key = 0;
+ client->scratch_ctx.ctx[index].value = 0;
+
+out:
+ return ret;
+}
+
+
+int
+client_ctx_del (client_t *client, xlator_t *xlator, uint64_t *value)
+{
+ int ret = 0;
+
+ if (!client || !xlator)
+ return -1;
+
+ LOCK (&client->scratch_ctx.lock);
+ {
+ ret = __client_ctx_del (client, xlator, value);
+ }
+ UNLOCK (&client->scratch_ctx.lock);
+
+ return ret;
+}
+
+
+void
+client_dump (client_t *client, char *prefix)
+{
+ char key[GF_DUMP_MAX_BUF_LEN];
+
+ if (!client)
+ return;
+
+ memset(key, 0, sizeof key);
+ gf_proc_dump_write("refcount", "%d", client->ref.count);
+}
+
+
+void
+cliententry_dump (cliententry_t *cliententry, char *prefix)
+{
+ if (!cliententry)
+ return;
+
+ if (GF_CLIENTENTRY_ALLOCATED != cliententry->next_free)
+ return;
+
+ if (cliententry->client)
+ client_dump(cliententry->client, prefix);
+}
+
+
+void
+clienttable_dump (clienttable_t *clienttable, char *prefix)
+{
+ int i = 0;
+ int ret = -1;
+ char key[GF_DUMP_MAX_BUF_LEN] = {0};
+
+ if (!clienttable)
+ return;
+
+ ret = TRY_LOCK (&clienttable->lock);
+ {
+ if (ret) {
+ gf_log ("client_t", GF_LOG_WARNING,
+ "Unable to acquire lock");
+ return;
+ }
+ memset(key, 0, sizeof key);
+ gf_proc_dump_build_key(key, prefix, "maxclients");
+ gf_proc_dump_write(key, "%d", clienttable->max_clients);
+ gf_proc_dump_build_key(key, prefix, "first_free");
+ gf_proc_dump_write(key, "%d", clienttable->first_free);
+ for ( i = 0 ; i < clienttable->max_clients; i++) {
+ if (GF_CLIENTENTRY_ALLOCATED ==
+ clienttable->cliententries[i].next_free) {
+ gf_proc_dump_build_key(key, prefix,
+ "cliententry[%d]", i);
+ gf_proc_dump_add_section(key);
+ cliententry_dump(&clienttable->cliententries[i],
+ key);
+ }
+ }
+ }
+ UNLOCK(&clienttable->lock);
+}
+
+
+void
+client_ctx_dump (client_t *client, char *prefix)
+{
+#if 0 /* TBD, FIXME */
+ struct client_ctx *client_ctx = NULL;
+ xlator_t *xl = NULL;
+ int i = 0;
+
+ if ((client == NULL) || (client->ctx == NULL)) {
+ goto out;
+ }
+
+ LOCK (&client->ctx_lock);
+ if (client->ctx != NULL) {
+ client_ctx = GF_CALLOC (client->inode->table->xl->graph->ctx_count,
+ sizeof (*client_ctx),
+ gf_common_mt_client_ctx);
+ if (client_ctx == NULL) {
+ goto unlock;
+ }
+
+ for (i = 0; i < client->inode->table->xl->graph->ctx_count; i++) {
+ client_ctx[i] = client->ctx[i];
+ }
+ }
+unlock:
+ UNLOCK (&client->ctx_lock);
+
+ if (client_ctx == NULL) {
+ goto out;
+ }
+
+ for (i = 0; i < client->inode->table->xl->graph->ctx_count; i++) {
+ if (client_ctx[i].xl_key) {
+ xl = (xlator_t *)(long)client_ctx[i].xl_key;
+ if (xl->dumpops && xl->dumpops->clientctx)
+ xl->dumpops->clientctx (xl, client);
+ }
+ }
+out:
+ GF_FREE (client_ctx);
+#endif
+}
+
+
+/*
+ * the following functions are here to preserve legacy behavior of the
+ * protocol/server xlator dump, but perhaps they should just be folded
+ * into the client dump instead?
+ */
+int
+gf_client_dump_fdtables_to_dict (xlator_t *this, dict_t *dict)
+{
+ client_t *client = NULL;
+ clienttable_t *clienttable = NULL;
+ int count = 0;
+ int ret = -1;
+ char key[GF_DUMP_MAX_BUF_LEN] = {0,};
+
+ GF_VALIDATE_OR_GOTO (THIS->name, this, out);
+ GF_VALIDATE_OR_GOTO (this->name, dict, out);
+
+ clienttable = this->ctx->clienttable;
+
+ if (!clienttable)
+ return -1;
+
+ ret = TRY_LOCK (&clienttable->lock);
+ {
+ if (ret) {
+ gf_log ("client_t", GF_LOG_WARNING,
+ "Unable to acquire lock");
+ return -1;
+ }
+ for ( ; count < clienttable->max_clients; count++) {
+ if (GF_CLIENTENTRY_ALLOCATED !=
+ clienttable->cliententries[count].next_free)
+ continue;
+ client = clienttable->cliententries[count].client;
+ memset(key, 0, sizeof key);
+ snprintf (key, sizeof key, "conn%d", count++);
+ fdtable_dump_to_dict (client->server_ctx.fdtable,
+ key, dict);
+ }
+ }
+ UNLOCK(&clienttable->lock);
+
+ ret = dict_set_int32 (dict, "conncount", count);
+out:
+ return ret;
+}
+
+int
+gf_client_dump_fdtables (xlator_t *this)
+{
+ client_t *client = NULL;
+ clienttable_t *clienttable = NULL;
+ int count = 1;
+ int ret = -1;
+ char key[GF_DUMP_MAX_BUF_LEN] = {0,};
+
+ GF_VALIDATE_OR_GOTO (THIS->name, this, out);
+
+ clienttable = this->ctx->clienttable;
+
+ if (!clienttable)
+ return -1;
+
+ ret = TRY_LOCK (&clienttable->lock);
+ {
+ if (ret) {
+ gf_log ("client_t", GF_LOG_WARNING,
+ "Unable to acquire lock");
+ return -1;
+ }
+
+
+ for ( ; count < clienttable->max_clients; count++) {
+ if (GF_CLIENTENTRY_ALLOCATED !=
+ clienttable->cliententries[count].next_free)
+ continue;
+ client = clienttable->cliententries[count].client;
+ memset(key, 0, sizeof key);
+ if (client->server_ctx.client_uid) {
+ gf_proc_dump_build_key (key, "conn",
+ "%d.id", count);
+ gf_proc_dump_write (key, "%s",
+ client->server_ctx.client_uid);
+ }
+
+ gf_proc_dump_build_key (key, "conn", "%d.ref",
+ count);
+ gf_proc_dump_write (key, "%d", client->ref.count);
+ if (client->bound_xl) {
+ gf_proc_dump_build_key (key, "conn",
+ "%d.bound_xl", count);
+ gf_proc_dump_write (key, "%s",
+ client->bound_xl->name);
+ }
+
+ gf_proc_dump_build_key (key, "conn","%d.id", count);
+ fdtable_dump (client->server_ctx.fdtable, key);
+ }
+ }
+
+ UNLOCK(&clienttable->lock);
+
+ ret = 0;
+out:
+ return ret;
+}
+
+
+int
+gf_client_dump_inodes_to_dict (xlator_t *this, dict_t *dict)
+{
+ client_t *client = NULL;
+ clienttable_t *clienttable = NULL;
+ xlator_t *prev_bound_xl = NULL;
+ char key[32] = {0,};
+ int count = 0;
+ int ret = -1;
+
+ GF_VALIDATE_OR_GOTO (THIS->name, this, out);
+ GF_VALIDATE_OR_GOTO (this->name, dict, out);
+
+ clienttable = this->ctx->clienttable;
+
+ if (!clienttable)
+ return -1;
+
+ ret = TRY_LOCK (&clienttable->lock);
+ {
+ if (ret) {
+ gf_log ("client_t", GF_LOG_WARNING,
+ "Unable to acquire lock");
+ return -1;
+ }
+ for ( ; count < clienttable->max_clients; count++) {
+ if (GF_CLIENTENTRY_ALLOCATED !=
+ clienttable->cliententries[count].next_free)
+ continue;
+ client = clienttable->cliententries[count].client;
+ memset(key, 0, sizeof key);
+ if (client->bound_xl && client->bound_xl->itable) {
+ /* Presently every brick contains only
+ * one bound_xl for all connections.
+ * This will lead to duplicating of
+ * the inode lists, if listing is
+ * done for every connection. This
+ * simple check prevents duplication
+ * in the present case. If need arises
+ * the check can be improved.
+ */
+ if (client->bound_xl == prev_bound_xl)
+ continue;
+ prev_bound_xl = client->bound_xl;
+
+ memset (key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "conn%d", count);
+ inode_table_dump_to_dict (client->bound_xl->itable,
+ key, dict);
+ }
+ }
+ }
+ UNLOCK(&clienttable->lock);
+
+ ret = dict_set_int32 (dict, "conncount", count);
+
+out:
+ if (prev_bound_xl)
+ prev_bound_xl = NULL;
+ return ret;
+}
+
+int
+gf_client_dump_inodes (xlator_t *this)
+{
+ client_t *client = NULL;
+ clienttable_t *clienttable = NULL;
+ xlator_t *prev_bound_xl = NULL;
+ int count = 1;
+ int ret = -1;
+ char key[GF_DUMP_MAX_BUF_LEN] = {0,};
+
+ GF_VALIDATE_OR_GOTO (THIS->name, this, out);
+
+ clienttable = this->ctx->clienttable;
+
+ if (!clienttable)
+ return -1;
+
+ ret = TRY_LOCK (&clienttable->lock);
+ {
+ if (ret) {
+ gf_log ("client_t", GF_LOG_WARNING,
+ "Unable to acquire lock");
+ return -1;
+ }
+
+ for ( ; count < clienttable->max_clients; count++) {
+ if (GF_CLIENTENTRY_ALLOCATED !=
+ clienttable->cliententries[count].next_free)
+ continue;
+ client = clienttable->cliententries[count].client;
+ memset(key, 0, sizeof key);
+ if (client->bound_xl && client->bound_xl->itable) {
+ /* Presently every brick contains only
+ * one bound_xl for all connections.
+ * This will lead to duplicating of
+ * the inode lists, if listing is
+ * done for every connection. This
+ * simple check prevents duplication
+ * in the present case. If need arises
+ * the check can be improved.
+ */
+ if (client->bound_xl == prev_bound_xl)
+ continue;
+ prev_bound_xl = client->bound_xl;
+
+ gf_proc_dump_build_key(key, "conn",
+ "%d.bound_xl.%s", count,
+ client->bound_xl->name);
+ inode_table_dump(client->bound_xl->itable,key);
+ }
+ }
+ }
+ UNLOCK(&clienttable->lock);
+
+ ret = 0;
+out:
+ return ret;
+}