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-rw-r--r--source3/Makefile.in1
-rw-r--r--source3/smbd/globals.h3
-rw-r--r--source3/smbd/server.c7
-rw-r--r--source3/smbd/smbXsrv_version.c260
-rwxr-xr-xsource3/wscript_build1
5 files changed, 272 insertions, 0 deletions
diff --git a/source3/Makefile.in b/source3/Makefile.in
index 63b7949839..858e0619af 100644
--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -975,6 +975,7 @@ SMBD_OBJ_SRV = smbd/server_reload.o \
smbd/smb2_setinfo.o \
smbd/smb2_break.o \
autoconf/librpc/gen_ndr/ndr_smbXsrv.o \
+ smbd/smbXsrv_version.o \
$(MANGLE_OBJ) @VFS_STATIC@
SMBD_OBJ_BASE = $(PARAM_WITHOUT_REG_OBJ) $(SMBD_OBJ_SRV) $(LIBSMB_OBJ) \
diff --git a/source3/smbd/globals.h b/source3/smbd/globals.h
index 0164cb627d..2614ebe631 100644
--- a/source3/smbd/globals.h
+++ b/source3/smbd/globals.h
@@ -356,6 +356,9 @@ struct smbXsrv_connection {
uint64_t smbd_idle_profstamp;
};
+NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id);
+uint32_t smbXsrv_version_global_current(void);
+
NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
enum protocol_types protocol);
diff --git a/source3/smbd/server.c b/source3/smbd/server.c
index c1cc15e8c5..ee4538c4ed 100644
--- a/source3/smbd/server.c
+++ b/source3/smbd/server.c
@@ -1061,6 +1061,7 @@ extern void build_options(bool screen);
NTSTATUS status;
struct tevent_context *ev_ctx;
struct messaging_context *msg_ctx;
+ struct server_id server_id;
struct tevent_signal *se;
char *np_dir = NULL;
@@ -1377,6 +1378,12 @@ extern void build_options(bool screen);
exit(1);
}
+ server_id = messaging_server_id(msg_ctx);
+ status = smbXsrv_version_global_init(&server_id);
+ if (!NT_STATUS_IS_OK(status)) {
+ exit(1);
+ }
+
if (!sessionid_init()) {
exit(1);
}
diff --git a/source3/smbd/smbXsrv_version.c b/source3/smbd/smbXsrv_version.c
new file mode 100644
index 0000000000..8ba5e1fc98
--- /dev/null
+++ b/source3/smbd/smbXsrv_version.c
@@ -0,0 +1,260 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Copyright (C) Stefan Metzmacher 2012
+
+ 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 "includes.h"
+#include "system/filesys.h"
+#include "smbd/globals.h"
+#include "dbwrap/dbwrap.h"
+#include "dbwrap/dbwrap_open.h"
+#include "lib/util/util_tdb.h"
+#include "librpc/gen_ndr/ndr_smbXsrv.h"
+#include "serverid.h"
+
+/*
+ * This implements a version scheme for file server internal
+ * states. smbXsrv_version_global.tdb stores the possible
+ * and current versions of structure formats (struct smbXsrv_*_global)
+ * per cluster node.
+ *
+ * If the supported versions doesn't match a version of any
+ * of the other nodes, it refused to start.
+ *
+ * This should prevent silent corruption of the internal
+ * databases and structures, if two incompatible implementations
+ * read and write.
+ *
+ * In future this can be used to implement rolling code upgrades
+ * in a cluster, but for now it is simple.
+ */
+
+static struct db_context *smbXsrv_version_global_db_ctx = NULL;
+static uint32_t smbXsrv_version_global_current_version = UINT32_MAX;
+
+NTSTATUS smbXsrv_version_global_init(const struct server_id *server_id)
+{
+ const char *global_path = NULL;
+ struct db_context *db_ctx = NULL;
+ struct db_record *db_rec = NULL;
+ TDB_DATA key;
+ TDB_DATA val;
+ DATA_BLOB blob;
+ struct smbXsrv_version_globalB global_blob;
+ enum ndr_err_code ndr_err;
+ struct smbXsrv_version_global0 *global = NULL;
+ uint32_t i;
+ uint32_t num_valid = 0;
+ struct smbXsrv_version_node0 *valid = NULL;
+ struct smbXsrv_version_node0 *local_node = NULL;
+ bool exists;
+ NTSTATUS status;
+ const char *key_string = "smbXsrv_version_global";
+ TALLOC_CTX *frame;
+
+ if (smbXsrv_version_global_db_ctx != NULL) {
+ return NT_STATUS_OK;
+ }
+
+ frame = talloc_stackframe();
+
+ global_path = lock_path("smbXsrv_version_global.tdb");
+
+ db_ctx = db_open(NULL, global_path,
+ 0, /* hash_size */
+ TDB_DEFAULT |
+ TDB_CLEAR_IF_FIRST |
+ TDB_INCOMPATIBLE_HASH,
+ O_RDWR | O_CREAT, 0600,
+ DBWRAP_LOCK_ORDER_1);
+ if (db_ctx == NULL) {
+ status = map_nt_error_from_unix_common(errno);
+ DEBUG(0,("smbXsrv_version_global_init: "
+ "failed to open[%s] - %s\n",
+ global_path, nt_errstr(status)));
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ key = string_term_tdb_data(key_string);
+
+ db_rec = dbwrap_fetch_locked(db_ctx, db_ctx, key);
+ if (db_rec == NULL) {
+ status = NT_STATUS_INTERNAL_DB_ERROR;
+ DEBUG(0,("smbXsrv_version_global_init: "
+ "dbwrap_fetch_locked(%s) - %s\n",
+ key_string, nt_errstr(status)));
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ val = dbwrap_record_get_value(db_rec);
+ if (val.dsize == 0) {
+ global = talloc_zero(frame, struct smbXsrv_version_global0);
+ if (global == NULL) {
+ DEBUG(0,("smbXsrv_version_global_init: "
+ "talloc_zero failed - %s\n", __location__));
+ TALLOC_FREE(frame);
+ return NT_STATUS_NO_MEMORY;
+ }
+ ZERO_STRUCT(global_blob);
+ global_blob.version = SMBXSRV_VERSION_CURRENT;
+ global_blob.info.info0 = global;
+ } else {
+ blob = data_blob_const(val.dptr, val.dsize);
+
+ ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
+ (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_version_globalB);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(0,("smbXsrv_version_global_init: "
+ "ndr_pull_smbXsrv_version_globalB - %s\n",
+ nt_errstr(status)));
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ switch (global_blob.version) {
+ case SMBXSRV_VERSION_0:
+ global = global_blob.info.info0;
+ if (global == NULL) {
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ break;
+ }
+ status = NT_STATUS_OK;
+ break;
+ default:
+ status = NT_STATUS_REVISION_MISMATCH;
+ break;
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("smbXsrv_version_global_init - %s\n",
+ nt_errstr(status)));
+ NDR_PRINT_DEBUG(smbXsrv_version_globalB, &global_blob);
+ TALLOC_FREE(frame);
+ return status;
+ }
+ }
+
+ valid = talloc_zero_array(global,
+ struct smbXsrv_version_node0,
+ global->num_nodes + 1);
+ if (valid == NULL) {
+ DEBUG(0,("smbXsrv_version_global_init: "
+ "talloc_zero_array failed - %s\n", __location__));
+ TALLOC_FREE(frame);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ num_valid = 0;
+ for (i=0; i < global->num_nodes; i++) {
+ struct smbXsrv_version_node0 *n = &global->nodes[i];
+
+ exists = serverid_exists(&n->server_id);
+ if (!exists) {
+ continue;
+ }
+
+ if (n->min_version > n->max_version) {
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ DEBUG(0,("smbXsrv_version_global_init - %s\n",
+ nt_errstr(status)));
+ NDR_PRINT_DEBUG(smbXsrv_version_globalB, &global_blob);
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ if (n->min_version > global_blob.version) {
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ DEBUG(0,("smbXsrv_version_global_init - %s\n",
+ nt_errstr(status)));
+ NDR_PRINT_DEBUG(smbXsrv_version_globalB, &global_blob);
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ if (n->max_version < global_blob.version) {
+ status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+ DEBUG(0,("smbXsrv_version_global_init - %s\n",
+ nt_errstr(status)));
+ NDR_PRINT_DEBUG(smbXsrv_version_globalB, &global_blob);
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ valid[num_valid] = *n;
+ if (server_id->vnn == n->server_id.vnn) {
+ local_node = &valid[num_valid];
+ }
+ num_valid++;
+ }
+
+ if (local_node == NULL) {
+ local_node = &valid[num_valid];
+ num_valid++;
+ }
+
+ local_node->server_id = *server_id;
+ local_node->min_version = SMBXSRV_VERSION_0;
+ local_node->max_version = SMBXSRV_VERSION_CURRENT;
+ local_node->current_version = global_blob.version;
+
+ global->num_nodes = num_valid;
+ global->nodes = valid;
+
+ global_blob.seqnum += 1;
+ global_blob.info.info0 = global;
+
+ ndr_err = ndr_push_struct_blob(&blob, db_rec, &global_blob,
+ (ndr_push_flags_fn_t)ndr_push_smbXsrv_version_globalB);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(0,("smbXsrv_version_global_init: "
+ "ndr_push_smbXsrv_version_globalB - %s\n",
+ nt_errstr(status)));
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ val = make_tdb_data(blob.data, blob.length);
+ status = dbwrap_record_store(db_rec, val, TDB_REPLACE);
+ TALLOC_FREE(db_rec);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("smbXsrv_version_global_init: "
+ "dbwrap_record_store - %s\n",
+ nt_errstr(status)));
+ TALLOC_FREE(frame);
+ return status;
+ }
+
+ DEBUG(10,("smbXsrv_version_global_init\n"));
+ if (DEBUGLVL(10)) {
+ NDR_PRINT_DEBUG(smbXsrv_version_globalB, &global_blob);
+ }
+
+ smbXsrv_version_global_db_ctx = db_ctx;
+ smbXsrv_version_global_current_version = global_blob.version;
+
+ TALLOC_FREE(frame);
+ return NT_STATUS_OK;
+}
+
+uint32_t smbXsrv_version_global_current(void)
+{
+ return smbXsrv_version_global_current_version;
+}
diff --git a/source3/wscript_build b/source3/wscript_build
index 521fe677e6..e1364fede1 100755
--- a/source3/wscript_build
+++ b/source3/wscript_build
@@ -375,6 +375,7 @@ SMBD_SRC_SRV = '''smbd/server_reload.c smbd/files.c smbd/connection.c
smbd/smb2_getinfo.c
smbd/smb2_setinfo.c
smbd/smb2_break.c
+ smbd/smbXsrv_version.c
smbd/server_exit.c
${MANGLE_SRC}'''
generated by cgit (git 2.34.1) at 2024-11-23 03:28:31 +0000