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-rw-r--r--source4/ntvfs/sysdep/config.mk8
-rw-r--r--source4/ntvfs/sysdep/sys_lease.c142
-rw-r--r--source4/ntvfs/sysdep/sys_lease.h65
3 files changed, 215 insertions, 0 deletions
diff --git a/source4/ntvfs/sysdep/config.mk b/source4/ntvfs/sysdep/config.mk
index dee198c9da..753c8833a4 100644
--- a/source4/ntvfs/sysdep/config.mk
+++ b/source4/ntvfs/sysdep/config.mk
@@ -16,3 +16,11 @@ OBJ_FILES = \
PUBLIC_DEPENDENCIES =
# End SUBSYSTEM sys_notify
################################################
+
+################################################
+# Start SUBSYSTEM sys_lease
+[SUBSYSTEM::sys_lease]
+OBJ_FILES = \
+ sys_lease.o
+# End SUBSYSTEM sys_lease
+################################################
diff --git a/source4/ntvfs/sysdep/sys_lease.c b/source4/ntvfs/sysdep/sys_lease.c
new file mode 100644
index 0000000000..28dd27a708
--- /dev/null
+++ b/source4/ntvfs/sysdep/sys_lease.c
@@ -0,0 +1,142 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Copyright (C) Stefan Metzmacher 2008
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ abstract the various kernel interfaces to leases (oplocks) into a
+ single Samba friendly interface
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "ntvfs/sysdep/sys_lease.h"
+#include "lib/events/events.h"
+#include "lib/util/dlinklist.h"
+#include "param/param.h"
+#include "build.h"
+
+/* list of registered backends */
+static struct sys_lease_ops *backends;
+static uint32_t num_backends;
+
+#define LEASE_BACKEND "lease:backend"
+
+/*
+ initialise a system change notify backend
+*/
+_PUBLIC_ struct sys_lease_context *sys_lease_context_create(struct share_config *scfg,
+ TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ struct messaging_context *msg,
+ sys_lease_send_break_fn break_send)
+{
+ struct sys_lease_context *ctx;
+ const char *bname;
+ int i;
+ NTSTATUS status;
+
+ if (num_backends == 0) {
+ return NULL;
+ }
+
+ if (ev == NULL) {
+ ev = event_context_find(mem_ctx);
+ }
+
+ ctx = talloc_zero(mem_ctx, struct sys_lease_context);
+ if (ctx == NULL) {
+ return NULL;
+ }
+
+ ctx->event_ctx = ev;
+ ctx->msg_ctx = msg;
+ ctx->break_send = break_send;
+
+ bname = share_string_option(scfg, LEASE_BACKEND, NULL);
+ if (!bname) {
+ talloc_free(ctx);
+ return NULL;
+ }
+
+ for (i=0;i<num_backends;i++) {
+ if (strcasecmp(backends[i].name, bname) == 0) {
+ ctx->ops = &backends[i];
+ break;
+ }
+ }
+
+ if (!ctx->ops) {
+ talloc_free(ctx);
+ return NULL;
+ }
+
+ status = ctx->ops->init(ctx);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(ctx);
+ return NULL;
+ }
+
+ return ctx;
+}
+
+/*
+ register a lease backend
+*/
+_PUBLIC_ NTSTATUS sys_lease_register(const struct sys_lease_ops *backend)
+{
+ struct sys_lease_ops *b;
+ b = talloc_realloc(talloc_autofree_context(), backends,
+ struct sys_lease_ops, num_backends+1);
+ NT_STATUS_HAVE_NO_MEMORY(b);
+ backends = b;
+ backends[num_backends] = *backend;
+ num_backends++;
+ return NT_STATUS_OK;
+}
+
+_PUBLIC_ NTSTATUS sys_lease_init(void)
+{
+ static bool initialized = false;
+
+ init_module_fn static_init[] = { STATIC_sys_lease_MODULES };
+
+ if (initialized) return NT_STATUS_OK;
+ initialized = true;
+
+ run_init_functions(static_init);
+
+ return NT_STATUS_OK;
+}
+
+NTSTATUS sys_lease_setup(struct sys_lease_context *ctx,
+ struct opendb_entry *e)
+{
+ return ctx->ops->setup(ctx, e);
+}
+
+NTSTATUS sys_lease_update(struct sys_lease_context *ctx,
+ struct opendb_entry *e)
+{
+ return ctx->ops->update(ctx, e);
+}
+
+NTSTATUS sys_lease_remove(struct sys_lease_context *ctx,
+ struct opendb_entry *e)
+{
+ return ctx->ops->remove(ctx, e);
+}
diff --git a/source4/ntvfs/sysdep/sys_lease.h b/source4/ntvfs/sysdep/sys_lease.h
new file mode 100644
index 0000000000..e53760fb1e
--- /dev/null
+++ b/source4/ntvfs/sysdep/sys_lease.h
@@ -0,0 +1,65 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Copyright (C) Stefan Metzmacher 2008
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "param/share.h"
+
+struct sys_lease_context;
+struct opendb_entry;
+struct messaging_context;
+
+typedef NTSTATUS (*sys_lease_send_break_fn)(struct messaging_context *,
+ struct opendb_entry *,
+ uint8_t level);
+
+struct sys_lease_ops {
+ const char *name;
+ NTSTATUS (*init)(struct sys_lease_context *ctx);
+ NTSTATUS (*setup)(struct sys_lease_context *ctx,
+ struct opendb_entry *e);
+ NTSTATUS (*update)(struct sys_lease_context *ctx,
+ struct opendb_entry *e);
+ NTSTATUS (*remove)(struct sys_lease_context *ctx,
+ struct opendb_entry *e);
+};
+
+struct sys_lease_context {
+ struct event_context *event_ctx;
+ struct messaging_context *msg_ctx;
+ sys_lease_send_break_fn break_send;
+ void *private_data; /* for use of backend */
+ const struct sys_lease_ops *ops;
+};
+
+NTSTATUS sys_lease_register(const struct sys_lease_ops *ops);
+NTSTATUS sys_lease_init(void);
+
+struct sys_lease_context *sys_lease_context_create(struct share_config *scfg,
+ TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ struct messaging_context *msg_ctx,
+ sys_lease_send_break_fn break_send);
+
+NTSTATUS sys_lease_setup(struct sys_lease_context *ctx,
+ struct opendb_entry *e);
+
+NTSTATUS sys_lease_update(struct sys_lease_context *ctx,
+ struct opendb_entry *e);
+
+NTSTATUS sys_lease_remove(struct sys_lease_context *ctx,
+ struct opendb_entry *e);
generated by cgit (git 2.34.1) at 2024-11-16 15:35:16 +0000