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authorStefan Metzmacher <metze@samba.org>2012-06-18 12:46:15 +0200
committerStefan Metzmacher <metze@samba.org>2012-09-08 03:39:06 +0200
commitbc296053cba15869d3417f6089bd2e7e96d42c09 (patch)
tree9c052e4b4fb1566d045c4b93c2eedb63346f6f7c /source3/smbd
parent5e63494508ade5da00ad5ab9db139efe03d39c2e (diff)
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s3:smbXsrv_open: add smb2srv_open_recreate() to support durable handles
metze
Diffstat (limited to 'source3/smbd')
-rw-r--r--source3/smbd/globals.h6
-rw-r--r--source3/smbd/smbXsrv_open.c205
2 files changed, 210 insertions, 1 deletions
diff --git a/source3/smbd/globals.h b/source3/smbd/globals.h
index 6af17a47c3..566f04d71f 100644
--- a/source3/smbd/globals.h
+++ b/source3/smbd/globals.h
@@ -441,6 +441,12 @@ NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
uint64_t volatile_id,
NTTIME now,
struct smbXsrv_open **_open);
+NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
+ struct auth_session_info *session_info,
+ uint64_t persistent_id,
+ struct GUID create_guid,
+ NTTIME now,
+ struct smbXsrv_open **_open);
struct smbd_smb2_request {
struct smbd_smb2_request *prev, *next;
diff --git a/source3/smbd/smbXsrv_open.c b/source3/smbd/smbXsrv_open.c
index abb2144971..c1754e86b2 100644
--- a/source3/smbd/smbXsrv_open.c
+++ b/source3/smbd/smbXsrv_open.c
@@ -616,7 +616,11 @@ static void smbXsrv_open_global_verify_record(struct db_record *db_rec,
global = global_blob.info.info0;
- exists = serverid_exists(&global->server_id);
+ if (server_id_is_disconnected(&global->server_id)) {
+ exists = true;
+ } else {
+ exists = serverid_exists(&global->server_id);
+ }
if (!exists) {
DEBUG(2,("smbXsrv_open_global_verify_record: "
"key '%s' server_id %s does not exist.\n",
@@ -699,6 +703,51 @@ static NTSTATUS smbXsrv_open_global_store(struct smbXsrv_open_global0 *global)
return NT_STATUS_OK;
}
+static NTSTATUS smbXsrv_open_global_lookup(struct smbXsrv_open_table *table,
+ uint32_t open_global_id,
+ TALLOC_CTX *mem_ctx,
+ struct smbXsrv_open_global0 **_global)
+{
+ TDB_DATA key;
+ uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
+ struct db_record *global_rec = NULL;
+ bool is_free = false;
+
+ *_global = NULL;
+
+ if (table->global.db_ctx == NULL) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ key = smbXsrv_open_global_id_to_key(open_global_id, key_buf);
+
+ global_rec = dbwrap_fetch_locked(table->global.db_ctx, mem_ctx, key);
+ if (global_rec == NULL) {
+ DEBUG(0, ("smbXsrv_open_global_lookup(0x%08x): "
+ "Failed to lock global key '%s'\n",
+ open_global_id,
+ hex_encode_talloc(talloc_tos(), key.dptr,
+ key.dsize)));
+ return NT_STATUS_INTERNAL_DB_ERROR;
+ }
+
+ smbXsrv_open_global_verify_record(global_rec,
+ &is_free,
+ NULL,
+ mem_ctx,
+ _global);
+ if (is_free) {
+ talloc_free(global_rec);
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+
+ (*_global)->db_rec = talloc_move(*_global, &global_rec);
+
+ talloc_set_destructor(*_global, smbXsrv_open_global_destructor);
+
+ return NT_STATUS_OK;
+}
+
static int smbXsrv_open_destructor(struct smbXsrv_open *op)
{
NTSTATUS status;
@@ -784,6 +833,9 @@ NTSTATUS smbXsrv_open_create(struct smbXsrv_connection *conn,
global->server_id = messaging_server_id(conn->msg_ctx);
global->open_time = now;
global->open_owner = *current_sid;
+ if (conn->protocol >= PROTOCOL_SMB2_10) {
+ global->client_guid = conn->smb2.client.guid;
+ }
ptr = op;
val = make_tdb_data((uint8_t const *)&ptr, sizeof(ptr));
@@ -909,6 +961,8 @@ NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now)
op->table = NULL;
op->status = NT_STATUS_FILE_CLOSED;
+ op->global->disconnect_time = now;
+ server_id_set_disconnected(&op->global->server_id);
global_rec = op->global->db_rec;
op->global->db_rec = NULL;
@@ -932,6 +986,42 @@ NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now)
}
}
+ if (global_rec != NULL && op->global->durable) {
+ /*
+ * If it is a durable open we need to update the global part
+ * instead of deleting it
+ */
+ op->global->db_rec = global_rec;
+ status = smbXsrv_open_global_store(op->global);
+ if (NT_STATUS_IS_OK(status)) {
+ /*
+ * smbXsrv_open_global_store does the free
+ * of op->global->db_rec
+ */
+ global_rec = NULL;
+ }
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("smbXsrv_open_close(0x%08x)"
+ "smbXsrv_open_global_store() failed - %s\n",
+ op->global->open_global_id,
+ nt_errstr(status)));
+ error = status;
+ }
+
+ if (NT_STATUS_IS_OK(status) && DEBUGLVL(10)) {
+ struct smbXsrv_openB open_blob;
+
+ ZERO_STRUCT(open_blob);
+ open_blob.version = SMBXSRV_VERSION_0;
+ open_blob.info.info0 = op;
+
+ DEBUG(10,("smbXsrv_open_close(0x%08x): "
+ "stored disconnect\n",
+ op->global->open_global_id));
+ NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
+ }
+ }
+
if (global_rec != NULL) {
status = dbwrap_record_delete(global_rec);
if (!NT_STATUS_IS_OK(status)) {
@@ -1073,3 +1163,116 @@ NTSTATUS smb2srv_open_lookup(struct smbXsrv_connection *conn,
return smbXsrv_open_local_lookup(table, local_id, global_id, now, _open);
}
+
+NTSTATUS smb2srv_open_recreate(struct smbXsrv_connection *conn,
+ struct auth_session_info *session_info,
+ uint64_t persistent_id,
+ struct GUID create_guid,
+ NTTIME now,
+ struct smbXsrv_open **_open)
+{
+ struct smbXsrv_open_table *table = conn->open_table;
+ struct db_record *local_rec = NULL;
+ struct smbXsrv_open *op = NULL;
+ void *ptr = NULL;
+ TDB_DATA val;
+ uint32_t global_id = persistent_id & UINT32_MAX;
+ uint64_t global_zeros = persistent_id & 0xFFFFFFFF00000000LLU;
+ NTSTATUS status;
+ struct security_token *current_token = NULL;
+
+ if (session_info == NULL) {
+ return NT_STATUS_INVALID_HANDLE;
+ }
+ current_token = session_info->security_token;
+
+ if (current_token == NULL) {
+ return NT_STATUS_INVALID_HANDLE;
+ }
+
+ if (global_zeros != 0) {
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+
+ op = talloc_zero(table, struct smbXsrv_open);
+ if (op == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ op->table = table;
+
+ status = smbXsrv_open_global_lookup(table, global_id, op, &op->global);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(op);
+ return status;
+ }
+
+ if (!GUID_equal(&op->global->create_guid, &create_guid)) {
+ TALLOC_FREE(op);
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+
+ if (!security_token_is_sid(current_token, &op->global->open_owner)) {
+ TALLOC_FREE(op);
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+
+ if (!op->global->durable) {
+ TALLOC_FREE(op);
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+
+ if (table->local.num_opens >= table->local.max_opens) {
+ TALLOC_FREE(op);
+ return NT_STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ status = smbXsrv_open_local_allocate_id(table->local.db_ctx,
+ table->local.lowest_id,
+ table->local.highest_id,
+ op,
+ &local_rec,
+ &op->local_id);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(op);
+ return status;
+ }
+
+ op->idle_time = now;
+ op->status = NT_STATUS_FILE_CLOSED;
+
+ op->global->open_volatile_id = op->local_id;
+ op->global->server_id = messaging_server_id(conn->msg_ctx);
+
+ ptr = op;
+ val = make_tdb_data((uint8_t const *)&ptr, sizeof(ptr));
+ status = dbwrap_record_store(local_rec, val, TDB_REPLACE);
+ TALLOC_FREE(local_rec);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(op);
+ return status;
+ }
+ table->local.num_opens += 1;
+
+ talloc_set_destructor(op, smbXsrv_open_destructor);
+
+ status = smbXsrv_open_global_store(op->global);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(op);
+ return status;
+ }
+
+ if (DEBUGLVL(10)) {
+ struct smbXsrv_openB open_blob;
+
+ ZERO_STRUCT(open_blob);
+ open_blob.version = 0;
+ open_blob.info.info0 = op;
+
+ DEBUG(10,("smbXsrv_open_recreate: global_id (0x%08x) stored\n",
+ op->global->open_global_id));
+ NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
+ }
+
+ *_open = op;
+ return NT_STATUS_OK;
+}