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-rw-r--r--xlators/features/Makefile.am3
-rw-r--r--xlators/features/upcall/Makefile.am3
-rw-r--r--xlators/features/upcall/src/Makefile.am21
-rw-r--r--xlators/features/upcall/src/upcall-cache-invalidation.h79
-rw-r--r--xlators/features/upcall/src/upcall-internal.c424
-rw-r--r--xlators/features/upcall/src/upcall-mem-types.h24
-rw-r--r--xlators/features/upcall/src/upcall-messages.h62
-rw-r--r--xlators/features/upcall/src/upcall.c956
-rw-r--r--xlators/features/upcall/src/upcall.h134
9 files changed, 1705 insertions, 1 deletions
diff --git a/xlators/features/Makefile.am b/xlators/features/Makefile.am
index dcb3cc8e5a7..096f0e04bb2 100644
--- a/xlators/features/Makefile.am
+++ b/xlators/features/Makefile.am
@@ -1,4 +1,5 @@
SUBDIRS = locks quota read-only mac-compat quiesce marker index barrier \
- protect compress changelog gfid-access $(GLUPY_SUBDIR) qemu-block snapview-client snapview-server trash # path-converter # filter
+ protect compress changelog gfid-access $(GLUPY_SUBDIR) qemu-block \
+ upcall snapview-client snapview-server trash # path-converter # filter
CLEANFILES =
diff --git a/xlators/features/upcall/Makefile.am b/xlators/features/upcall/Makefile.am
new file mode 100644
index 00000000000..a985f42a877
--- /dev/null
+++ b/xlators/features/upcall/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = src
+
+CLEANFILES =
diff --git a/xlators/features/upcall/src/Makefile.am b/xlators/features/upcall/src/Makefile.am
new file mode 100644
index 00000000000..2ac09551476
--- /dev/null
+++ b/xlators/features/upcall/src/Makefile.am
@@ -0,0 +1,21 @@
+xlator_LTLIBRARIES = upcall.la
+xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/features
+
+upcall_la_LDFLAGS = -module -avoid-version
+
+upcall_la_SOURCES = upcall.c upcall-internal.c
+
+upcall_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la \
+ $(top_builddir)/rpc/rpc-lib/src/libgfrpc.la \
+ $(top_builddir)/rpc/xdr/src/libgfxdr.la
+
+noinst_HEADERS = upcall.h upcall-mem-types.h upcall-messages.h \
+ upcall-cache-invalidation.h
+
+AM_CPPFLAGS = $(GF_CPPFLAGS) -I$(top_srcdir)/libglusterfs/src \
+ -I$(top_srcdir)/rpc/rpc-lib/src \
+ -I$(top_srcdir)/rpc/xdr/src
+
+AM_CFLAGS = -Wall -fno-strict-aliasing $(GF_CFLAGS)
+
+CLEANFILES =
diff --git a/xlators/features/upcall/src/upcall-cache-invalidation.h b/xlators/features/upcall/src/upcall-cache-invalidation.h
new file mode 100644
index 00000000000..758ddf1dae8
--- /dev/null
+++ b/xlators/features/upcall/src/upcall-cache-invalidation.h
@@ -0,0 +1,79 @@
+/*
+ Copyright (c) 2015 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.
+*/
+
+#ifndef __UPCALL_CACHE_INVALIDATION_H__
+#define __UPCALL_CACHE_INVALIDATION_H__
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+/* TODO: Below macros have to be replaced with
+ * xlator options - Bug1200271 */
+#define ON_CACHE_INVALIDATION 0 /* disable by default */
+
+/* The time period for which a client will be notified of cache_invalidation
+ * events post its last access */
+#define CACHE_INVALIDATION_PERIOD 60
+
+/* Flags sent for cache_invalidation */
+#define UP_NLINK 0x00000001 /* update nlink */
+#define UP_MODE 0x00000002 /* update mode and ctime */
+#define UP_OWN 0x00000004 /* update mode,uid,gid and ctime */
+#define UP_SIZE 0x00000008 /* update fsize */
+#define UP_TIMES 0x00000010 /* update all times */
+#define UP_ATIME 0x00000020 /* update atime only */
+#define UP_PERM 0x00000040 /* update fields needed for
+ permission checking */
+#define UP_RENAME 0x00000080 /* this is a rename op -
+ delete the cache entry */
+#define UP_FORGET 0x00000100 /* inode_forget on server side -
+ invalidate the cache entry */
+
+/* for fops - open, read, lk, */
+#define UP_IDEMPOTENT_FLAGS (UP_ATIME)
+
+/* for fop - write, truncate */
+#define UP_WRITE_FLAGS (UP_SIZE | UP_TIMES)
+
+/* for fop - setattr */
+#define UP_ATTR_FLAGS (UP_SIZE | UP_TIMES | UP_OWN | \
+ UP_MODE | UP_PERM)
+/* for fop - rename */
+#define UP_RENAME_FLAGS (UP_RENAME)
+
+/* to invalidate parent directory entries for fops -rename, unlink,
+ * rmdir, mkdir, create */
+#define UP_PARENT_DENTRY_FLAGS (UP_TIMES)
+
+/* for fop - unlink, link, rmdir, mkdir */
+#define UP_NLINK_FLAGS (UP_NLINK | UP_TIMES)
+
+#define CACHE_INVALIDATE(frame, this, client, inode, p_flags) do { \
+ if (ON_CACHE_INVALIDATION) { \
+ (void)upcall_cache_invalidate (frame, this, client, inode, p_flags); \
+ } \
+} while (0)
+
+#define CACHE_INVALIDATE_DIR(frame, this, client, inode_p, p_flags) do { \
+ if (ON_CACHE_INVALIDATION) { \
+ dentry_t *dentry; \
+ dentry_t *dentry_tmp; \
+ list_for_each_entry_safe (dentry, dentry_tmp, \
+ &inode_p->dentry_list, \
+ inode_list) { \
+ (void)upcall_cache_invalidate (frame, this, client, \
+ dentry->inode, p_flags); \
+ } \
+ } \
+} while (0)
+
+#endif /* __UPCALL_CACHE_INVALIDATION_H__ */
diff --git a/xlators/features/upcall/src/upcall-internal.c b/xlators/features/upcall/src/upcall-internal.c
new file mode 100644
index 00000000000..26473e2a7bd
--- /dev/null
+++ b/xlators/features/upcall/src/upcall-internal.c
@@ -0,0 +1,424 @@
+/*
+ Copyright (c) 2015 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 <unistd.h>
+#include <fcntl.h>
+#include <limits.h>
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "glusterfs.h"
+#include "compat.h"
+#include "xlator.h"
+#include "inode.h"
+#include "logging.h"
+#include "common-utils.h"
+
+#include "statedump.h"
+#include "syncop.h"
+
+#include "upcall.h"
+#include "upcall-mem-types.h"
+#include "glusterfs3-xdr.h"
+#include "protocol-common.h"
+#include "defaults.h"
+
+/*
+ * Allocate and add a new client entry to the given upcall entry
+ */
+upcall_client_t*
+add_upcall_client (call_frame_t *frame, uuid_t gfid,
+ client_t *client,
+ upcall_inode_ctx_t *up_inode_ctx)
+{
+ upcall_client_t *up_client_entry = NULL;
+
+ pthread_mutex_lock (&up_inode_ctx->client_list_lock);
+ {
+ up_client_entry = __add_upcall_client (frame,
+ gfid,
+ client,
+ up_inode_ctx);
+ }
+ pthread_mutex_unlock (&up_inode_ctx->client_list_lock);
+
+ return up_client_entry;
+}
+
+upcall_client_t*
+__add_upcall_client (call_frame_t *frame, uuid_t gfid,
+ client_t *client,
+ upcall_inode_ctx_t *up_inode_ctx)
+{
+ upcall_client_t *up_client_entry = NULL;
+
+ up_client_entry = GF_CALLOC (1, sizeof(*up_client_entry),
+ gf_upcall_mt_upcall_client_entry_t);
+ if (!up_client_entry) {
+ gf_msg ("upcall", GF_LOG_WARNING, 0,
+ UPCALL_MSG_NO_MEMORY,
+ "Memory allocation failed");
+ return NULL;
+ }
+ INIT_LIST_HEAD (&up_client_entry->client_list);
+ up_client_entry->client_uid = gf_strdup(client->client_uid);
+ up_client_entry->access_time = time(NULL);
+ up_client_entry->expire_time_attr = CACHE_INVALIDATION_PERIOD;
+
+ list_add_tail (&up_client_entry->client_list,
+ &up_inode_ctx->client_list);
+
+ gf_log (THIS->name, GF_LOG_DEBUG, "upcall_entry_t client added - %s",
+ up_client_entry->client_uid);
+
+ return up_client_entry;
+}
+
+/*
+ * Given gfid and client->uid, retrieve the corresponding upcall client entry.
+ * If none found, create a new entry.
+ */
+upcall_client_t*
+__get_upcall_client (call_frame_t *frame, uuid_t gfid, client_t *client,
+ upcall_inode_ctx_t *up_inode_ctx)
+{
+ upcall_client_t *up_client_entry = NULL;
+ upcall_client_t *up_client = NULL;
+ upcall_client_t *tmp = NULL;
+ gf_boolean_t found_client = _gf_false;
+
+ list_for_each_entry_safe (up_client_entry, tmp,
+ &up_inode_ctx->client_list,
+ client_list) {
+ if (strcmp(client->client_uid,
+ up_client_entry->client_uid) == 0) {
+ /* found client entry. Update the access_time */
+ up_client_entry->access_time = time(NULL);
+ found_client = _gf_true;
+ gf_log (THIS->name, GF_LOG_DEBUG,
+ "upcall_entry_t client found - %s",
+ up_client_entry->client_uid);
+ break;
+ }
+ }
+
+ if (!found_client) { /* create one */
+ up_client_entry = __add_upcall_client (frame, gfid, client,
+ up_inode_ctx);
+ }
+
+ return up_client_entry;
+}
+
+int
+__upcall_inode_ctx_set (inode_t *inode, xlator_t *this)
+{
+ upcall_inode_ctx_t *inode_ctx = NULL;
+ int ret = -1;
+ uint64_t ctx = 0;
+
+ ret = __inode_ctx_get (inode, this, &ctx);
+
+ if (!ret)
+ goto out;
+
+ inode_ctx = GF_CALLOC (1, sizeof (upcall_inode_ctx_t),
+ gf_upcall_mt_upcall_inode_ctx_t);
+
+ if (!inode_ctx) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ pthread_mutex_init (&inode_ctx->client_list_lock, NULL);
+ INIT_LIST_HEAD (&inode_ctx->client_list);
+
+ ret = __inode_ctx_set (inode, this, (uint64_t *) inode_ctx);
+ if (ret)
+ gf_log (this->name, GF_LOG_DEBUG,
+ "failed to set inode ctx (%p)", inode);
+out:
+ return ret;
+}
+
+upcall_inode_ctx_t *
+__upcall_inode_ctx_get (inode_t *inode, xlator_t *this)
+{
+ upcall_inode_ctx_t *inode_ctx = NULL;
+ uint64_t ctx = 0;
+ int ret = 0;
+
+ ret = __inode_ctx_get (inode, this, &ctx);
+
+ if (ret < 0) {
+ ret = __upcall_inode_ctx_set (inode, this);
+ if (ret < 0)
+ goto out;
+
+ ret = __inode_ctx_get (inode, this, &ctx);
+ if (ret < 0)
+ goto out;
+ }
+
+ inode_ctx = (upcall_inode_ctx_t *)(long) ctx;
+
+out:
+ return inode_ctx;
+}
+
+upcall_inode_ctx_t *
+upcall_inode_ctx_get (inode_t *inode, xlator_t *this)
+{
+ upcall_inode_ctx_t *inode_ctx = NULL;
+
+ LOCK (&inode->lock);
+ {
+ inode_ctx = __upcall_inode_ctx_get (inode, this);
+ }
+ UNLOCK (&inode->lock);
+
+ return inode_ctx;
+}
+
+int
+__upcall_cleanup_client_entry (upcall_client_t *up_client)
+{
+ list_del_init (&up_client->client_list);
+
+ GF_FREE (up_client->client_uid);
+ GF_FREE (up_client);
+
+ return 0;
+}
+
+/*
+ * Free Upcall inode_ctx client list
+ */
+int
+__upcall_cleanup_inode_ctx_client_list (upcall_inode_ctx_t *inode_ctx)
+{
+ upcall_client_t *up_client = NULL;
+ upcall_client_t *tmp = NULL;
+
+ list_for_each_entry_safe (up_client, tmp,
+ &inode_ctx->client_list,
+ client_list) {
+ __upcall_cleanup_client_entry (up_client);
+ }
+
+ return 0;
+}
+
+/*
+ * Free upcall_inode_ctx
+ */
+int
+upcall_cleanup_inode_ctx (xlator_t *this, inode_t *inode)
+{
+ uint64_t ctx = 0;
+ upcall_inode_ctx_t *inode_ctx = NULL;
+ int ret = 0;
+
+ ret = inode_ctx_get (inode, this, &ctx);
+
+ if (ret < 0) {
+ gf_log (THIS->name, GF_LOG_TRACE,
+ "Failed to get upcall_inode_ctx (%p)",
+ inode);
+ goto out;
+ }
+
+ /* Invalidate all the upcall cache entries */
+ upcall_cache_forget (this, inode, inode_ctx);
+
+ /* Set inode context to NULL */
+ ret = __inode_ctx_set (inode, this, NULL);
+
+ if (!ret) {
+ gf_log (this->name, GF_LOG_WARNING,
+ "_inode_ctx_set to NULL failed (%p)",
+ inode);
+ }
+ inode_ctx = (upcall_inode_ctx_t *)(long) ctx;
+
+ if (inode_ctx) {
+ /* do we really need lock? */
+ pthread_mutex_lock (&inode_ctx->client_list_lock);
+ {
+ if (!list_empty (&inode_ctx->client_list)) {
+ __upcall_cleanup_inode_ctx_client_list (inode_ctx);
+ }
+ }
+ pthread_mutex_unlock (&inode_ctx->client_list_lock);
+
+ pthread_mutex_destroy (&inode_ctx->client_list_lock);
+
+ GF_FREE (inode_ctx);
+ }
+
+out:
+ return ret;
+}
+
+/*
+ * Given a gfid, client, first fetch upcall_entry_t based on gfid.
+ * Later traverse through the client list of that upcall entry. If this client
+ * is not present in the list, create one client entry with this client info.
+ * Also check if there are other clients which need to be notified of this
+ * op. If yes send notify calls to them.
+ *
+ * Since sending notifications for cache_invalidation is a best effort,
+ * any errors during the process are logged and ignored.
+ */
+void
+upcall_cache_invalidate (call_frame_t *frame, xlator_t *this, client_t *client,
+ inode_t *inode, uint32_t flags)
+{
+ upcall_client_t *up_client = NULL;
+ upcall_client_t *up_client_entry = NULL;
+ upcall_client_t *tmp = NULL;
+ upcall_inode_ctx_t *up_inode_ctx = NULL;
+ gf_boolean_t found = _gf_false;
+
+ up_inode_ctx = ((upcall_local_t *)frame->local)->upcall_inode_ctx;
+
+ if (!up_inode_ctx)
+ up_inode_ctx = upcall_inode_ctx_get (inode, this);
+
+ if (!up_inode_ctx) {
+ gf_log (this->name, GF_LOG_WARNING,
+ "upcall_inode_ctx_get failed (%p)",
+ inode);
+ return;
+ }
+
+ pthread_mutex_lock (&up_inode_ctx->client_list_lock);
+ {
+ list_for_each_entry_safe (up_client_entry, tmp,
+ &up_inode_ctx->client_list,
+ client_list) {
+
+ if (!strcmp(client->client_uid,
+ up_client_entry->client_uid)) {
+ up_client_entry->access_time = time(NULL);
+ found = _gf_true;
+ }
+
+ /*
+ * Ignore sending notifications in case of only UP_ATIME
+ */
+ if (!(flags & ~(UP_ATIME))) {
+ if (found)
+ break;
+ else /* we still need to find current client entry*/
+ continue;
+ }
+
+ /* any other client */
+
+ /* XXX: Send notifications asynchrounously
+ * instead of in the I/O path - BZ 1200264
+ * Also if the file is frequently accessed, set
+ * expire_time_attr to 0.
+ */
+ upcall_client_cache_invalidate(this,
+ inode->gfid,
+ up_client_entry,
+ flags);
+ }
+
+ if (!found) {
+ up_client_entry = __add_upcall_client (frame,
+ inode->gfid,
+ client,
+ up_inode_ctx);
+ }
+ }
+ pthread_mutex_unlock (&up_inode_ctx->client_list_lock);
+}
+
+/*
+ * If the upcall_client_t has recently accessed the file (i.e, within
+ * CACHE_INVALIDATION_PERIOD), send a upcall notification.
+ */
+void
+upcall_client_cache_invalidate (xlator_t *this, uuid_t gfid,
+ upcall_client_t *up_client_entry,
+ uint32_t flags)
+{
+ notify_event_data_t n_event_data;
+ time_t t_expired = time(NULL) - up_client_entry->access_time;
+
+ if (t_expired < CACHE_INVALIDATION_PERIOD) {
+ /* Send notify call */
+ uuid_copy(n_event_data.gfid, gfid);
+ n_event_data.client_entry = up_client_entry;
+ n_event_data.event_type = CACHE_INVALIDATION;
+ n_event_data.invalidate_flags = flags;
+
+ /* Need to send inode flags */
+ this->notify (this, GF_EVENT_UPCALL, &n_event_data);
+
+ gf_log (THIS->name, GF_LOG_TRACE,
+ "Cache invalidation notification sent to %s",
+ up_client_entry->client_uid);
+
+ } else {
+ if (t_expired > (2*CACHE_INVALIDATION_PERIOD)) {
+ /* Cleanup the entry */
+ __upcall_cleanup_client_entry (up_client_entry);
+ }
+
+ gf_log (THIS->name, GF_LOG_TRACE,
+ "Cache invalidation notification NOT sent to %s",
+ up_client_entry->client_uid);
+ }
+}
+
+/*
+ * This is called during upcall_inode_ctx cleanup incase of 'inode_forget'.
+ * Send "UP_FORGET" to all the clients so that they invalidate their cache
+ * entry and do a fresh lookup next time when any I/O comes in.
+ */
+void
+upcall_cache_forget (xlator_t *this, inode_t *inode, upcall_inode_ctx_t *up_inode_ctx)
+{
+ upcall_client_t *up_client = NULL;
+ upcall_client_t *up_client_entry = NULL;
+ upcall_client_t *tmp = NULL;
+ uint32_t flags = 0;
+
+ if (!up_inode_ctx) {
+ return;
+ }
+
+ pthread_mutex_lock (&up_inode_ctx->client_list_lock);
+ {
+ list_for_each_entry_safe (up_client_entry, tmp,
+ &up_inode_ctx->client_list,
+ client_list) {
+ flags = UP_FORGET;
+
+ /* Set the access time to time(NULL)
+ * to send notify */
+ up_client_entry->access_time = time(NULL);
+
+ upcall_client_cache_invalidate(this,
+ inode->gfid,
+ up_client_entry,
+ flags);
+ }
+
+ }
+ pthread_mutex_unlock (&up_inode_ctx->client_list_lock);
+}
diff --git a/xlators/features/upcall/src/upcall-mem-types.h b/xlators/features/upcall/src/upcall-mem-types.h
new file mode 100644
index 00000000000..55793ec65ca
--- /dev/null
+++ b/xlators/features/upcall/src/upcall-mem-types.h
@@ -0,0 +1,24 @@
+/*
+ Copyright (c) 2015 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.
+*/
+
+#ifndef __UPCALL_MEM_TYPES_H__
+#define __UPCALL_MEM_TYPES_H__
+
+#include "mem-types.h"
+
+enum gf_upcall_mem_types_ {
+ gf_upcall_mt_conf_t = gf_common_mt_end + 1,
+ gf_upcall_mt_private_t,
+ gf_upcall_mt_upcall_inode_ctx_t,
+ gf_upcall_mt_upcall_client_entry_t,
+ gf_upcall_mt_end
+};
+#endif
+
diff --git a/xlators/features/upcall/src/upcall-messages.h b/xlators/features/upcall/src/upcall-messages.h
new file mode 100644
index 00000000000..c8483f16528
--- /dev/null
+++ b/xlators/features/upcall/src/upcall-messages.h
@@ -0,0 +1,62 @@
+/*
+ Copyright (c) 2015 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.
+ */
+
+#ifndef _UPCALL_MESSAGES_H_
+#define _UPCALL_MESSAGES_H_
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "glfs-message-id.h"
+
+/*! \file upcall-messages.h
+ * \brief UPCALL log-message IDs and their descriptions.
+ */
+
+/* NOTE: Rules for message additions
+ * 1) Each instance of a message is _better_ left with a unique message ID, even
+ * if the message format is the same. Reasoning is that, if the message
+ * format needs to change in one instance, the other instances are not
+ * impacted or the new change does not change the ID of the instance being
+ * modified.
+ * 2) Addition of a message,
+ * - Should increment the GLFS_NUM_MESSAGES
+ * - Append to the list of messages defined, towards the end
+ * - Retain macro naming as glfs_msg_X (for redability across developers)
+ * NOTE: Rules for message format modifications
+ * 3) Check across the code if the message ID macro in question is reused
+ * anywhere. If reused then then the modifications should ensure correctness
+ * everywhere, or needs a new message ID as (1) above was not adhered to. If
+ * not used anywhere, proceed with the required modification.
+ * NOTE: Rules for message deletion
+ * 4) Check (3) and if used anywhere else, then cannot be deleted. If not used
+ * anywhere, then can be deleted, but will leave a hole by design, as
+ * addition rules specify modification to the end of the list and not filling
+ * holes.
+ */
+
+#define GLFS_COMP_BASE_UPCALL GLFS_MSGID_COMP_UPCALL
+#define GLFS_NUM_MESSAGES 1
+#define GLFS_MSGID_END (GLFS_COMP_BASE_UPCALL + GLFS_NUM_MESSAGES + 1)
+
+#define glfs_msg_start_x GLFS_COMP_BASE_UPCALL, "Invalid: Start of messages"
+
+/*!
+ * @messageid 110001
+ * @diagnosis Out of Memory
+ * @recommendedaction None
+ */
+#define UPCALL_MSG_NO_MEMORY (GLFS_COMP_BASE_UPCALL + 1)
+
+#define glfs_msg_end_x GLFS_MSGID_END, "Invalid: End of messages"
+
+#endif /* !_UPCALL_MESSAGES_H_ */
diff --git a/xlators/features/upcall/src/upcall.c b/xlators/features/upcall/src/upcall.c
new file mode 100644
index 00000000000..b7f2e975bba
--- /dev/null
+++ b/xlators/features/upcall/src/upcall.c
@@ -0,0 +1,956 @@
+/*
+ Copyright (c) 2015 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 <unistd.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <pthread.h>
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "glusterfs.h"
+#include "compat.h"
+#include "xlator.h"
+#include "inode.h"
+#include "logging.h"
+#include "common-utils.h"
+
+#include "statedump.h"
+#include "syncop.h"
+
+#include "upcall.h"
+#include "upcall-mem-types.h"
+#include "glusterfs3-xdr.h"
+#include "protocol-common.h"
+#include "defaults.h"
+
+int
+up_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, fd_t *fd, dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ flags = UP_IDEMPOTENT_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+out:
+ UPCALL_STACK_UNWIND (open, frame, op_ret, op_errno, fd, xdata);
+
+ return 0;
+}
+
+
+int
+up_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
+ fd_t *fd, dict_t *xdata)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, fd->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_open_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->open,
+ loc, flags, fd, xdata);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (open, frame, -1, op_errno, NULL, NULL);
+
+ return 0;
+}
+
+int
+up_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, struct iatt *prebuf,
+ struct iatt *postbuf, dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ flags = UP_WRITE_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+out:
+ UPCALL_STACK_UNWIND (writev, frame, op_ret, op_errno,
+ prebuf, postbuf, xdata);
+
+ return 0;
+}
+
+
+int
+up_writev (call_frame_t *frame, xlator_t *this, fd_t *fd,
+ struct iovec *vector, int count, off_t off, uint32_t flags,
+ struct iobref *iobref, dict_t *xdata)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, fd->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_writev_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->writev,
+ fd, vector, count, off, flags, iobref, xdata);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (writev, frame, -1, op_errno, NULL, NULL, NULL);
+
+ return 0;
+}
+
+
+int
+up_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno,
+ struct iovec *vector, int count, struct iatt *stbuf,
+ struct iobref *iobref, dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ flags = UP_IDEMPOTENT_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+out:
+ UPCALL_STACK_UNWIND (readv, frame, op_ret, op_errno, vector,
+ count, stbuf, iobref, xdata);
+
+ return 0;
+}
+
+int
+up_readv (call_frame_t *frame, xlator_t *this,
+ fd_t *fd, size_t size, off_t offset,
+ uint32_t flags, dict_t *xdata)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, fd->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_readv_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->readv,
+ fd, size, offset, flags, xdata);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (readv, frame, -1, op_errno, NULL, 0,
+ NULL, NULL, NULL);
+
+ return 0;
+}
+
+int32_t
+up_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, struct gf_flock *lock,
+ dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ flags = UP_IDEMPOTENT_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+out:
+ UPCALL_STACK_UNWIND (lk, frame, op_ret, op_errno, lock, xdata);
+
+ return 0;
+}
+
+int
+up_lk (call_frame_t *frame, xlator_t *this,
+ fd_t *fd, int32_t cmd, struct gf_flock *flock, dict_t *xdata)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, fd->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_lk_cbk, FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->lk,
+ fd, cmd, flock, xdata);
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (lk, frame, -1, op_errno, NULL, NULL);
+
+ return 0;
+}
+
+int
+up_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, struct iatt *prebuf,
+ struct iatt *postbuf, dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ flags = UP_WRITE_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+out:
+ UPCALL_STACK_UNWIND (truncate, frame, op_ret, op_errno,
+ prebuf, postbuf, xdata);
+
+ return 0;
+}
+
+int
+up_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset,
+ dict_t *xdata)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, loc->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_truncate_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->truncate,
+ loc, offset, xdata);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (truncate, frame, -1, op_errno, NULL, NULL, NULL);
+
+ return 0;
+}
+
+int
+up_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, struct iatt *statpre,
+ struct iatt *statpost, dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ /* XXX: setattr -> UP_SIZE or UP_OWN or UP_MODE or UP_TIMES
+ * or INODE_UPDATE (or UP_PERM esp incase of ACLs -> INODE_INVALIDATE)
+ * Need to check what attr is changed and accordingly pass UP_FLAGS.
+ * Bug1200271.
+ */
+ flags = UP_ATTR_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+out:
+ UPCALL_STACK_UNWIND (setattr, frame, op_ret, op_errno,
+ statpre, statpost, xdata);
+
+ return 0;
+}
+
+int
+up_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
+ struct iatt *stbuf, int32_t valid, dict_t *xdata)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, loc->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_setattr_cbk,
+ FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->setattr,
+ loc, stbuf, valid, xdata);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (setattr, frame, -1, op_errno, NULL, NULL, NULL);
+
+ return 0;
+}
+
+int
+up_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, struct iatt *stbuf,
+ struct iatt *preoldparent, struct iatt *postoldparent,
+ struct iatt *prenewparent, struct iatt *postnewparent,
+ dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ flags = UP_RENAME_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+ /* Need to invalidate old and new parent entries as well */
+ flags = UP_PARENT_DENTRY_FLAGS;
+ CACHE_INVALIDATE_DIR (frame, this, client, local->inode, flags);
+
+ /* XXX: notify oldparent as well */
+/* if (uuid_compare (preoldparent->ia_gfid, prenewparent->ia_gfid))
+ CACHE_INVALIDATE (frame, this, client, prenewparent->ia_gfid, flags);*/
+
+out:
+ UPCALL_STACK_UNWIND (rename, frame, op_ret, op_errno,
+ stbuf, preoldparent, postoldparent,
+ prenewparent, postnewparent, xdata);
+
+ return 0;
+}
+
+int
+up_rename (call_frame_t *frame, xlator_t *this,
+ loc_t *oldloc, loc_t *newloc, dict_t *xdata)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, oldloc->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_rename_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->rename,
+ oldloc, newloc, xdata);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (rename, frame, -1, op_errno, NULL,
+ NULL, NULL, NULL, NULL, NULL);
+
+ return 0;
+}
+
+int
+up_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, struct iatt *preparent,
+ struct iatt *postparent, dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ flags = UP_NLINK_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+ flags = UP_PARENT_DENTRY_FLAGS;
+ /* invalidate parent's entry too */
+ CACHE_INVALIDATE_DIR (frame, this, client, local->inode, flags);
+
+out:
+ UPCALL_STACK_UNWIND (unlink, frame, op_ret, op_errno,
+ preparent, postparent, xdata);
+
+ return 0;
+}
+
+int
+up_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc, int xflag,
+ dict_t *xdata)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, loc->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_unlink_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->unlink,
+ loc, xflag, xdata);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (unlink, frame, -1, op_errno, NULL, NULL, NULL);
+
+ return 0;
+}
+
+int
+up_link_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, inode_t *inode, struct iatt *stbuf,
+ struct iatt *preparent, struct iatt *postparent, dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ flags = UP_NLINK_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+ /* do we need to update parent as well?? */
+out:
+ UPCALL_STACK_UNWIND (link, frame, op_ret, op_errno,
+ inode, stbuf, preparent, postparent, xdata);
+
+ return 0;
+}
+
+int
+up_link (call_frame_t *frame, xlator_t *this, loc_t *oldloc,
+ loc_t *newloc, dict_t *xdata)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, oldloc->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_link_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->link,
+ oldloc, newloc, xdata);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (link, frame, -1, op_errno, NULL,
+ NULL, NULL, NULL, NULL);
+
+ return 0;
+}
+
+int
+up_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, struct iatt *preparent,
+ struct iatt *postparent, dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ flags = UP_NLINK_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+ /* invalidate parent's entry too */
+ flags = UP_PARENT_DENTRY_FLAGS;
+ CACHE_INVALIDATE_DIR (frame, this, client, local->inode, flags);
+
+out:
+ UPCALL_STACK_UNWIND (rmdir, frame, op_ret, op_errno,
+ preparent, postparent, xdata);
+
+ return 0;
+}
+
+int
+up_rmdir (call_frame_t *frame, xlator_t *this, loc_t *loc, int flags,
+ dict_t *xdata)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, loc->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_rmdir_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->rmdir,
+ loc, flags, xdata);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (rmdir, frame, -1, op_errno, NULL, NULL, NULL);
+
+ return 0;
+}
+
+int
+up_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, inode_t *inode,
+ struct iatt *stbuf, struct iatt *preparent,
+ struct iatt *postparent, dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+ flags = UP_NLINK_FLAGS;
+ CACHE_INVALIDATE (frame, this, client, local->inode, flags);
+
+ /* invalidate parent's entry too */
+ flags = UP_PARENT_DENTRY_FLAGS;
+ CACHE_INVALIDATE_DIR (frame, this, client, local->inode, flags);
+
+out:
+ UPCALL_STACK_UNWIND (mkdir, frame, op_ret, op_errno,
+ inode, stbuf, preparent, postparent, xdata);
+
+ return 0;
+}
+
+int
+up_mkdir (call_frame_t *frame, xlator_t *this,
+ loc_t *loc, mode_t mode, mode_t umask, dict_t *params)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, loc->inode);
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_mkdir_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->mkdir,
+ loc, mode, umask, params);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL,
+ NULL, NULL, NULL, NULL);
+
+ return 0;
+}
+
+int
+up_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, fd_t *fd, inode_t *inode,
+ struct iatt *stbuf, struct iatt *preparent,
+ struct iatt *postparent, dict_t *xdata)
+{
+ client_t *client = NULL;
+ uint32_t flags = 0;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ client = frame->root->client;
+ local = frame->local;
+
+ if ((op_ret < 0) || !local) {
+ goto out;
+ }
+
+ /* As its a new file create, no need of sending notification */
+ /* However invalidate parent's entry */
+ flags = UP_PARENT_DENTRY_FLAGS;
+ CACHE_INVALIDATE_DIR (frame, this, client, local->inode, flags);
+
+out:
+ UPCALL_STACK_UNWIND (create, frame, op_ret, op_errno, fd,
+ inode, stbuf, preparent, postparent, xdata);
+
+ return 0;
+}
+
+int
+up_create (call_frame_t *frame, xlator_t *this,
+ loc_t *loc, int32_t flags, mode_t mode,
+ mode_t umask, fd_t *fd, dict_t *params)
+{
+ int32_t op_errno = -1;
+ upcall_local_t *local = NULL;
+
+ EXIT_IF_UPCALL_OFF (out);
+
+ local = upcall_local_init (frame, this, loc->inode);
+
+ if (!local) {
+ op_errno = ENOMEM;
+ goto err;
+ }
+
+out:
+ STACK_WIND (frame, up_create_cbk,
+ FIRST_CHILD(this), FIRST_CHILD(this)->fops->create,
+ loc, flags, mode, umask, fd, params);
+
+ return 0;
+
+err:
+ op_errno = (op_errno == -1) ? errno : op_errno;
+ UPCALL_STACK_UNWIND (create, frame, -1, op_errno, NULL,
+ NULL, NULL, NULL, NULL, NULL);
+
+ return 0;
+}
+
+int32_t
+mem_acct_init (xlator_t *this)
+{
+ int ret = -1;
+
+ if (!this)
+ return ret;
+
+ ret = xlator_mem_acct_init (this, gf_upcall_mt_end + 1);
+
+ if (ret != 0) {
+ gf_msg ("upcall", GF_LOG_WARNING, 0,
+ UPCALL_MSG_NO_MEMORY,
+ "Memory allocation failed");
+ return ret;
+ }
+
+ return ret;
+}
+
+void
+upcall_local_wipe (xlator_t *this, upcall_local_t *local)
+{
+ if (local) {
+ inode_unref (local->inode);
+ mem_put (local);
+ }
+}
+
+upcall_local_t *
+upcall_local_init (call_frame_t *frame, xlator_t *this, inode_t *inode)
+{
+ upcall_local_t *local = NULL;
+
+ local = mem_get0 (THIS->local_pool);
+
+ if (!local)
+ goto out;
+
+ local->inode = inode_ref (inode);
+
+ /* Shall we get inode_ctx and store it here itself? */
+ local->upcall_inode_ctx = upcall_inode_ctx_get (inode, this);
+
+ frame->local = local;
+
+out:
+ return local;
+}
+
+int
+init (xlator_t *this)
+{
+ int ret = -1;
+ upcalls_private_t *priv = NULL;
+
+ priv = GF_CALLOC (1, sizeof (*priv),
+ gf_upcall_mt_private_t);
+ if (!priv) {
+ gf_msg ("upcall", GF_LOG_WARNING, 0,
+ UPCALL_MSG_NO_MEMORY,
+ "Memory allocation failed");
+ goto out;
+ }
+
+ this->private = priv;
+ this->local_pool = mem_pool_new (upcall_local_t, 512);
+ ret = 0;
+
+out:
+ if (ret) {
+ GF_FREE (priv);
+ }
+
+ return ret;
+}
+
+int
+fini (xlator_t *this)
+{
+ upcalls_private_t *priv = NULL;
+
+ priv = this->private;
+ if (!priv) {
+ return 0;
+ }
+ this->private = NULL;
+ GF_FREE (priv);
+
+ return 0;
+}
+
+int
+upcall_forget (xlator_t *this, inode_t *inode)
+{
+ upcall_cleanup_inode_ctx (this, inode);
+ return 0;
+}
+
+int
+upcall_release (xlator_t *this, fd_t *fd)
+{
+ return 0;
+}
+
+int
+notify (xlator_t *this, int32_t event, void *data, ...)
+{
+ int ret = -1;
+ int32_t val = 0;
+ notify_event_data_t *notify_event = NULL;
+ struct gf_upcall up_req = {0,};
+ upcall_client_t *up_client_entry = NULL;
+
+ switch (event) {
+ case GF_EVENT_UPCALL:
+ {
+ gf_log (this->name, GF_LOG_DEBUG, "Upcall Notify event = %d",
+ event);
+
+ notify_event = (notify_event_data_t *) data;
+ up_client_entry = notify_event->client_entry;
+
+ if (!up_client_entry) {
+ goto out;
+ }
+
+ up_req.client_uid = up_client_entry->client_uid;
+
+ memcpy (up_req.gfid, notify_event->gfid, 16);
+ gf_log (this->name, GF_LOG_DEBUG,
+ "Sending notify to the client- %s, gfid - %s",
+ up_client_entry->client_uid, up_req.gfid);
+
+ switch (notify_event->event_type) {
+ case CACHE_INVALIDATION:
+ GF_ASSERT (notify_event->extra);
+ up_req.flags = notify_event->invalidate_flags;
+ up_req.expire_time_attr = up_client_entry->expire_time_attr;
+ break;
+ default:
+ goto out;
+ }
+
+ up_req.event_type = notify_event->event_type;
+
+ ret = default_notify (this, event, &up_req);
+
+ /*
+ * notify may fail as the client could have been
+ * dis(re)connected. Cleanup the client entry.
+ */
+ if (ret < 0)
+ __upcall_cleanup_client_entry (up_client_entry);
+ }
+ break;
+ default:
+ default_notify (this, event, data);
+ break;
+ }
+ ret = 0;
+
+out:
+ return ret;
+}
+
+struct xlator_fops fops = {
+ .open = up_open,
+ .readv = up_readv,
+ .writev = up_writev,
+ .truncate = up_truncate,
+ .lk = up_lk,
+ .setattr = up_setattr,
+ .rename = up_rename,
+ .unlink = up_unlink, /* invalidate both file and parent dir */
+ .rmdir = up_rmdir, /* same as above */
+ .link = up_link, /* invalidate both file and parent dir */
+ .create = up_create, /* update only direntry */
+ .mkdir = up_mkdir, /* update only dirent */
+#ifdef WIP
+ .ftruncate = up_ftruncate, /* reqd? */
+ .getattr = up_getattr, /* ?? */
+ .getxattr = up_getxattr, /* ?? */
+ .access = up_access,
+ .lookup = up_lookup,
+ .symlink = up_symlink, /* invalidate both file and parent dir maybe */
+ .readlink = up_readlink, /* Needed? readlink same as read? */
+ .readdirp = up_readdirp,
+ .readdir = up_readdir,
+/* other fops to be considered - Bug1200271
+ * lookup, stat, opendir, readdir, readdirp, readlink, mknod, statfs, flush,
+ * fsync, mknod, fsyncdir, setxattr, removexattr, rchecksum, fallocate, discard,
+ * zerofill, (also variants of above similar to fsetattr)
+ */
+#endif
+};
+
+struct xlator_cbks cbks = {
+ .forget = upcall_forget,
+ .release = upcall_release,
+};
+
+struct volume_options options[] = {
+ { .key = {NULL} },
+};
diff --git a/xlators/features/upcall/src/upcall.h b/xlators/features/upcall/src/upcall.h
new file mode 100644
index 00000000000..a5aff9d091e
--- /dev/null
+++ b/xlators/features/upcall/src/upcall.h
@@ -0,0 +1,134 @@
+/*
+ Copyright (c) 2015 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.
+*/
+#ifndef __UPCALL_H__
+#define __UPCALL_H__
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "compat-errno.h"
+#include "stack.h"
+#include "call-stub.h"
+#include "upcall-mem-types.h"
+#include "client_t.h"
+#include "rpcsvc.h"
+#include "lkowner.h"
+#include "locking.h"
+#include "upcall-messages.h"
+#include "upcall-cache-invalidation.h"
+
+#define EXIT_IF_UPCALL_OFF(label) do { \
+ if (!(ON_CACHE_INVALIDATION)) \
+ goto label; \
+} while (0)
+
+#define UPCALL_STACK_UNWIND(fop, frame, params ...) do { \
+ upcall_local_t *__local = NULL; \
+ xlator_t *__xl = NULL; \
+ if (frame) { \
+ __xl = frame->this; \
+ __local = frame->local; \
+ frame->local = NULL; \
+ } \
+ STACK_UNWIND_STRICT (fop, frame, params); \
+ upcall_local_wipe (__xl, __local); \
+ } while (0)
+
+#define UPCALL_STACK_DESTROY(frame) do { \
+ upcall_local_t *__local = NULL; \
+ xlator_t *__xl = NULL; \
+ __xl = frame->this; \
+ __local = frame->local; \
+ frame->local = NULL; \
+ STACK_DESTROY (frame->root); \
+ upcall_local_wipe (__xl, __local); \
+ } while (0)
+
+struct _upcalls_private_t {
+ int client_id; /* Not sure if reqd */
+};
+typedef struct _upcalls_private_t upcalls_private_t;
+
+enum _upcall_event_type_t {
+ EVENT_NULL,
+ CACHE_INVALIDATION,
+};
+typedef enum _upcall_event_type_t upcall_event_type_t;
+
+struct _upcall_client_t {
+ struct list_head client_list;
+ /* strdup to store client_uid, strdup. Free it explicitly */
+ char *client_uid;
+ time_t access_time; /* time last accessed */
+ /* the amount of time which client can cache this entry */
+ uint32_t expire_time_attr;
+};
+typedef struct _upcall_client_t upcall_client_t;
+
+/* Upcall entries are maintained in inode_ctx */
+struct _upcall_inode_ctx_t {
+ struct list_head client_list;
+ pthread_mutex_t client_list_lock; /* mutex for clients list
+ of this upcall entry */
+};
+typedef struct _upcall_inode_ctx_t upcall_inode_ctx_t;
+
+struct _notify_event_data {
+ uuid_t gfid;
+ upcall_client_t *client_entry;
+ upcall_event_type_t event_type;
+ uint32_t invalidate_flags;
+ /* any extra data needed, like inode flags
+ * to be invalidated incase of cache invalidation,
+ * may be fd for lease recalls */
+ void *extra;
+};
+typedef struct _notify_event_data notify_event_data_t;
+
+struct upcall_local {
+ /* XXX: need to check if we can store
+ * pointers in 'local' which may get freed
+ * in future by other thread
+ */
+ upcall_inode_ctx_t *upcall_inode_ctx;
+ inode_t *inode;
+};
+typedef struct upcall_local upcall_local_t;
+
+void upcall_local_wipe (xlator_t *this, upcall_local_t *local);
+upcall_local_t *upcall_local_init (call_frame_t *frame, xlator_t *this, inode_t *inode);
+
+upcall_client_t *add_upcall_client (call_frame_t *frame, uuid_t gfid,
+ client_t *client,
+ upcall_inode_ctx_t *up_inode_ctx);
+upcall_client_t *__add_upcall_client (call_frame_t *frame, uuid_t gfid,
+ client_t *client,
+ upcall_inode_ctx_t *up_inode_ctx);
+upcall_client_t *__get_upcall_client (call_frame_t *frame, uuid_t gfid,
+ client_t *client,
+ upcall_inode_ctx_t *up_inode_ctx);
+int __upcall_cleanup_client_entry (upcall_client_t *up_client);
+
+int __upcall_inode_ctx_set (inode_t *inode, xlator_t *this);
+upcall_inode_ctx_t *__upcall_inode_ctx_get (inode_t *inode, xlator_t *this);
+upcall_inode_ctx_t *upcall_inode_ctx_get (inode_t *inode, xlator_t *this);
+int upcall_cleanup_inode_ctx (xlator_t *this, inode_t *inode);
+
+void upcall_cache_invalidate (call_frame_t *frame, xlator_t *this, client_t *client,
+ inode_t *inode, uint32_t flags);
+void upcall_client_cache_invalidate (xlator_t *xl, uuid_t gfid,
+ upcall_client_t *up_client_entry,
+ uint32_t flags);
+void upcall_cache_forget (xlator_t *this, inode_t *inode,
+ upcall_inode_ctx_t *up_inode_ctx);
+
+#endif /* __UPCALL_H__ */
generated by cgit (git 2.34.1) at 2024-11-20 03:49:00 +0000