| 1 | /*
|
|---|
| 2 | Unix SMB/CIFS implementation.
|
|---|
| 3 | Infrastructure for async requests
|
|---|
| 4 | Copyright (C) Volker Lendecke 2008
|
|---|
| 5 |
|
|---|
| 6 | This program is free software; you can redistribute it and/or modify
|
|---|
| 7 | it under the terms of the GNU General Public License as published by
|
|---|
| 8 | the Free Software Foundation; either version 3 of the License, or
|
|---|
| 9 | (at your option) any later version.
|
|---|
| 10 |
|
|---|
| 11 | This program is distributed in the hope that it will be useful,
|
|---|
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 14 | GNU General Public License for more details.
|
|---|
| 15 |
|
|---|
| 16 | You should have received a copy of the GNU General Public License
|
|---|
| 17 | along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|---|
| 18 | */
|
|---|
| 19 |
|
|---|
| 20 | #include "includes.h"
|
|---|
| 21 |
|
|---|
| 22 | char *async_req_print(TALLOC_CTX *mem_ctx, struct async_req *req)
|
|---|
| 23 | {
|
|---|
| 24 | return talloc_asprintf(mem_ctx, "async_req: state=%d, status=%s, "
|
|---|
| 25 | "priv=%s", req->state, nt_errstr(req->status),
|
|---|
| 26 | talloc_get_name(req->private_data));
|
|---|
| 27 | }
|
|---|
| 28 |
|
|---|
| 29 | struct async_req *async_req_new(TALLOC_CTX *mem_ctx, struct event_context *ev)
|
|---|
| 30 | {
|
|---|
| 31 | struct async_req *result;
|
|---|
| 32 |
|
|---|
| 33 | result = TALLOC_ZERO_P(mem_ctx, struct async_req);
|
|---|
| 34 | if (result == NULL) {
|
|---|
| 35 | return NULL;
|
|---|
| 36 | }
|
|---|
| 37 | result->state = ASYNC_REQ_IN_PROGRESS;
|
|---|
| 38 | result->event_ctx = ev;
|
|---|
| 39 | result->print = async_req_print;
|
|---|
| 40 | return result;
|
|---|
| 41 | }
|
|---|
| 42 |
|
|---|
| 43 | void async_req_done(struct async_req *req)
|
|---|
| 44 | {
|
|---|
| 45 | req->status = NT_STATUS_OK;
|
|---|
| 46 | req->state = ASYNC_REQ_DONE;
|
|---|
| 47 | if (req->async.fn != NULL) {
|
|---|
| 48 | req->async.fn(req);
|
|---|
| 49 | }
|
|---|
| 50 | }
|
|---|
| 51 |
|
|---|
| 52 | void async_req_error(struct async_req *req, NTSTATUS status)
|
|---|
| 53 | {
|
|---|
| 54 | req->status = status;
|
|---|
| 55 | req->state = ASYNC_REQ_ERROR;
|
|---|
| 56 | if (req->async.fn != NULL) {
|
|---|
| 57 | req->async.fn(req);
|
|---|
| 58 | }
|
|---|
| 59 | }
|
|---|
| 60 |
|
|---|
| 61 | static void async_trigger(struct event_context *ev, struct timed_event *te,
|
|---|
| 62 | const struct timeval *now, void *priv)
|
|---|
| 63 | {
|
|---|
| 64 | struct async_req *req = talloc_get_type_abort(priv, struct async_req);
|
|---|
| 65 |
|
|---|
| 66 | TALLOC_FREE(te);
|
|---|
| 67 | if (NT_STATUS_IS_OK(req->status)) {
|
|---|
| 68 | async_req_done(req);
|
|---|
| 69 | }
|
|---|
| 70 | else {
|
|---|
| 71 | async_req_error(req, req->status);
|
|---|
| 72 | }
|
|---|
| 73 | }
|
|---|
| 74 |
|
|---|
| 75 | bool async_post_status(struct async_req *req, NTSTATUS status)
|
|---|
| 76 | {
|
|---|
| 77 | /*
|
|---|
| 78 | * Used if a request is finished before it even started
|
|---|
| 79 | */
|
|---|
| 80 |
|
|---|
| 81 | req->status = status;
|
|---|
| 82 |
|
|---|
| 83 | if (event_add_timed(req->event_ctx, req, timeval_zero(),
|
|---|
| 84 | "async_trigger",
|
|---|
| 85 | async_trigger, req) == NULL) {
|
|---|
| 86 | return false;
|
|---|
| 87 | }
|
|---|
| 88 | return true;
|
|---|
| 89 | }
|
|---|
| 90 |
|
|---|
| 91 | bool async_req_nomem(const void *p, struct async_req *req)
|
|---|
| 92 | {
|
|---|
| 93 | if (p != NULL) {
|
|---|
| 94 | return false;
|
|---|
| 95 | }
|
|---|
| 96 | async_req_error(req, NT_STATUS_NO_MEMORY);
|
|---|
| 97 | return true;
|
|---|
| 98 | }
|
|---|
