const struct smb2_lease_key *lease_key,
const struct file_id *id,
const char *servicepath,
- const char *filename,
+ const char *base_name,
const char *stream_name)
{
TDB_DATA db_key, db_value;
NTSTATUS status;
bool ok;
struct leases_db_value new_value;
+ struct leases_db_file new_file;
struct leases_db_value *value = NULL;
enum ndr_err_code ndr_err;
}
/* id must be unique. */
- for (i = 0; i < value->num_file_ids; i++) {
- if (file_id_equal(id, &value->ids[i])) {
+ for (i = 0; i < value->num_files; i++) {
+ if (file_id_equal(id, &value->files[i].id)) {
status = NT_STATUS_OBJECT_NAME_COLLISION;
goto out;
}
}
- value->ids = talloc_realloc(value, value->ids, struct file_id,
- value->num_file_ids + 1);
- if (value->ids == NULL) {
+ value->files = talloc_realloc(value, value->files,
+ struct leases_db_file,
+ value->num_files + 1);
+ if (value->files == NULL) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
- value->ids[value->num_file_ids] = *id;
- value->num_file_ids += 1;
+ value->files[value->num_files].id = *id;
+ value->files[value->num_files].servicepath = servicepath;
+ value->files[value->num_files].base_name = base_name;
+ value->files[value->num_files].stream_name = stream_name;
+ value->num_files += 1;
} else {
DEBUG(10, ("%s: new record\n", __func__));
- new_value = (struct leases_db_value) {
- .num_file_ids = 1,
- .ids = discard_const_p(struct file_id, id),
- .filename = filename,
+ new_file = (struct leases_db_file) {
+ .id = *id,
+ .servicepath = servicepath,
+ .base_name = base_name,
.stream_name = stream_name,
};
+
+ new_value = (struct leases_db_value) {
+ .num_files = 1,
+ .files = &new_file,
+ };
value = &new_value;
}
}
/* id must exist. */
- for (i = 0; i < value->num_file_ids; i++) {
- if (file_id_equal(id, &value->ids[i])) {
+ for (i = 0; i < value->num_files; i++) {
+ if (file_id_equal(id, &value->files[i].id)) {
break;
}
}
- if (i == value->num_file_ids) {
+ if (i == value->num_files) {
status = NT_STATUS_NOT_FOUND;
goto out;
}
- value->ids[i] = value->ids[value->num_file_ids-1];
- value->num_file_ids -= 1;
+ value->files[i] = value->files[value->num_files-1];
+ value->num_files -= 1;
- if (value->num_file_ids == 0) {
+ if (value->num_files == 0) {
DEBUG(10, ("%s: deleting record\n", __func__));
status = dbwrap_record_delete(rec);
} else {
}
struct leases_db_fetch_state {
- void (*parser)(uint32_t num_file_ids,
- struct file_id *ids, const char *filename,
- const char *stream_name, void *private_data);
+ void (*parser)(uint32_t num_files,
+ const struct leases_db_file *files,
+ void *private_data);
void *private_data;
NTSTATUS status;
};
NDR_PRINT_DEBUG(leases_db_value, value);
}
- state->parser(value->num_file_ids,
- value->ids, value->filename, value->stream_name,
+ state->parser(value->num_files,
+ value->files,
state->private_data);
TALLOC_FREE(value);
NTSTATUS leases_db_parse(const struct GUID *client_guid,
const struct smb2_lease_key *lease_key,
- void (*parser)(uint32_t num_file_ids,
- struct file_id *ids,
- const char *filename,
- const char *stream_name,
+ void (*parser)(uint32_t num_files,
+ const struct leases_db_file *files,
void *private_data),
void *private_data)
{
#include "messages.h"
#include "source3/lib/dbwrap/dbwrap_watch.h"
#include "locking/leases_db.h"
+#include "librpc/gen_ndr/ndr_leases_db.h"
extern const struct generic_mapping file_generic_mapping;
* used for a different file name.
*/
-struct lease_fname_match_state {
+struct lease_match_state {
/* Input parameters. */
+ TALLOC_CTX *mem_ctx;
+ const char *servicepath;
const struct smb_filename *fname;
bool file_existed;
struct file_id id;
NTSTATUS match_status;
};
-static void lease_fname_match_parser(
- uint32_t num_file_ids,
- struct file_id *ids, const char *filename, const char *stream_name,
+/*************************************************************
+ File doesn't exist but this lease key+guid is already in use.
+
+ This is only allowable in the dynamic share case where the
+ service path must be different.
+
+ There is a small race condition here in the multi-connection
+ case where a client sends two create calls on different connections,
+ where the file doesn't exist and one smbd creates the leases_db
+ entry first, but this will get fixed by the multichannel cleanup
+ when all identical client_guids get handled by a single smbd.
+**************************************************************/
+
+static void lease_match_parser_new_file(
+ uint32_t num_files,
+ const struct leases_db_file *files,
+ struct lease_match_state *state)
+{
+ uint32_t i;
+
+ for (i = 0; i < num_files; i++) {
+ const struct leases_db_file *f = &files[i];
+ if (strequal(state->servicepath, f->servicepath)) {
+ state->match_status = NT_STATUS_INVALID_PARAMETER;
+ return;
+ }
+ }
+
+ /* Dynamic share case. Break leases on all other files. */
+ state->match_status = leases_db_copy_file_ids(state->mem_ctx,
+ num_files,
+ files,
+ &state->ids);
+ if (!NT_STATUS_IS_OK(state->match_status)) {
+ return;
+ }
+
+ state->num_file_ids = num_files;
+ state->match_status = NT_STATUS_OPLOCK_NOT_GRANTED;
+ return;
+}
+
+static void lease_match_parser(
+ uint32_t num_files,
+ const struct leases_db_file *files,
void *private_data)
{
- struct lease_fname_match_state *state =
- (struct lease_fname_match_state *)private_data;
+ struct lease_match_state *state =
+ (struct lease_match_state *)private_data;
+ uint32_t i;
- if (!strequal(filename, state->fname->base_name) ||
- !strequal(stream_name, state->fname->stream_name))
- {
- /* Names don't match lease key. */
- state->match_status = NT_STATUS_INVALID_PARAMETER;
+ if (!state->file_existed) {
+ /*
+ * Deal with name mismatch or
+ * possible dynamic share case separately
+ * to make code clearer.
+ */
+ lease_match_parser_new_file(num_files,
+ files,
+ state);
return;
}
- if (state->file_existed &&
- num_file_ids == 1 &&
- file_id_equal(&ids[0],&state->id))
- {
- /* Common case - non-dynamic share. We're ok.. */
- state->match_status = NT_STATUS_OK;
+ /* File existed. */
+ state->match_status = NT_STATUS_OK;
+
+ for (i = 0; i < num_files; i++) {
+ const struct leases_db_file *f = &files[i];
+
+ /* Everything should be the same. */
+ if (!file_id_equal(&state->id, &f->id)) {
+ /* This should catch all dynamic share cases. */
+ state->match_status = NT_STATUS_OPLOCK_NOT_GRANTED;
+ break;
+ }
+ if (!strequal(f->servicepath, state->servicepath)) {
+ state->match_status = NT_STATUS_INVALID_PARAMETER;
+ break;
+ }
+ if (!strequal(f->base_name, state->fname->base_name)) {
+ state->match_status = NT_STATUS_INVALID_PARAMETER;
+ break;
+ }
+ if (!strequal(f->stream_name, state->fname->stream_name)) {
+ state->match_status = NT_STATUS_INVALID_PARAMETER;
+ break;
+ }
+ }
+
+ if (NT_STATUS_IS_OK(state->match_status)) {
+ /*
+ * Common case - just opening another handle on a
+ * file on a non-dynamic share.
+ */
+ return;
+ }
+
+ if (NT_STATUS_EQUAL(state->match_status, NT_STATUS_INVALID_PARAMETER)) {
+ /* Mismatched path. Error back to client. */
return;
}
/*
- * More than one file id, or not equal, or new file
- * being created and there's already an existing lease
- * on this (client_guid, lease id) pair.
+ * File id mismatch. Dynamic share case NT_STATUS_OPLOCK_NOT_GRANTED.
* Don't allow leases.
*/
- state->match_status = NT_STATUS_OPLOCK_NOT_GRANTED;
- state->num_file_ids = num_file_ids;
- state->ids = talloc_memdup(talloc_tos(),
- ids,
- num_file_ids * sizeof(struct file_id));
- if (state->ids == NULL) {
- state->match_status = NT_STATUS_NO_MEMORY;
+ state->match_status = leases_db_copy_file_ids(state->mem_ctx,
+ num_files,
+ files,
+ &state->ids);
+ if (!NT_STATUS_IS_OK(state->match_status)) {
+ return;
}
+
+ state->num_file_ids = num_files;
+ state->match_status = NT_STATUS_OPLOCK_NOT_GRANTED;
+ return;
}
static NTSTATUS lease_match(connection_struct *conn,
struct smb_request *req,
struct smb2_lease_key *lease_key,
+ const char *servicepath,
const struct smb_filename *fname,
uint16_t *p_version,
uint16_t *p_epoch)
{
struct smbd_server_connection *sconn = req->sconn;
- struct lease_fname_match_state state = {
+ TALLOC_CTX *tos = talloc_tos();
+ struct lease_match_state state = {
+ .mem_ctx = tos,
+ .servicepath = servicepath,
.fname = fname,
.match_status = NT_STATUS_OK
};
}
status = leases_db_parse(&sconn->client->connections->smb2.client.guid,
- lease_key, lease_fname_match_parser, &state);
+ lease_key, lease_match_parser, &state);
if (!NT_STATUS_IS_OK(status)) {
/*
* Not found or error means okay: We can make the lease pass
status = lease_match(conn,
req,
&lease->lease_key,
+ conn->connectpath,
smb_fname,
&version,
&epoch);
git.samba.org / obnox / samba / samba-obnox.git / commitdiff