1 /*
2 Unix SMB/CIFS implementation.
3 Wrap unix errno around tevent_req
4 Copyright (C) Volker Lendecke 2009
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 "../replace/replace.h"
21 #include "tevent_ntstatus.h"
22 #include "libcli/util/error.h"
23
24 #define TEVENT_NTERROR_MAGIC (0x917b5acd)
25
_tevent_req_nterror(struct tevent_req * req,NTSTATUS status,const char * location)26 bool _tevent_req_nterror(struct tevent_req *req,
27 NTSTATUS status,
28 const char *location)
29 {
30 uint64_t err;
31
32 if (NT_STATUS_IS_OK(status)) {
33 return false;
34 }
35
36 /*
37 * I've put this variable here, because I'm not 100% certain
38 * how to correctly assign a 64-bit constant and left-shift it
39 * by 32 bits in a single expression. If anyone knows, feel
40 * free :-)
41 */
42 err = TEVENT_NTERROR_MAGIC;
43 err <<= 32;
44 err |= NT_STATUS_V(status);
45
46 return _tevent_req_error(req, err, location);
47 }
48
tevent_req_is_nterror(struct tevent_req * req,NTSTATUS * status)49 bool tevent_req_is_nterror(struct tevent_req *req, NTSTATUS *status)
50 {
51 enum tevent_req_state state;
52 uint64_t err;
53
54 if (!tevent_req_is_error(req, &state, &err)) {
55 return false;
56 }
57 switch (state) {
58 case TEVENT_REQ_TIMED_OUT:
59 *status = NT_STATUS_IO_TIMEOUT;
60 break;
61 case TEVENT_REQ_NO_MEMORY:
62 *status = NT_STATUS_NO_MEMORY;
63 break;
64 case TEVENT_REQ_USER_ERROR:
65 if ((err >> 32) != TEVENT_NTERROR_MAGIC) {
66 abort();
67 }
68 *status = NT_STATUS(err & 0xffffffff);
69 break;
70 default:
71 *status = NT_STATUS_INTERNAL_ERROR;
72 break;
73 }
74 return true;
75 }
76
tevent_req_simple_recv_ntstatus(struct tevent_req * req)77 NTSTATUS tevent_req_simple_recv_ntstatus(struct tevent_req *req)
78 {
79 NTSTATUS status = NT_STATUS_OK;
80
81 /*
82 * Ignore result of tevent_req_is_nterror, we're only interested in
83 * the status
84 */
85 tevent_req_is_nterror(req, &status);
86 tevent_req_received(req);
87 return status;
88 }
89
tevent_req_simple_finish_ntstatus(struct tevent_req * subreq,NTSTATUS subreq_status)90 void tevent_req_simple_finish_ntstatus(struct tevent_req *subreq,
91 NTSTATUS subreq_status)
92 {
93 struct tevent_req *req = tevent_req_callback_data(
94 subreq, struct tevent_req);
95
96 TALLOC_FREE(subreq);
97
98 if (!NT_STATUS_IS_OK(subreq_status)) {
99 tevent_req_nterror(req, subreq_status);
100 return;
101 }
102 tevent_req_done(req);
103 }
104
tevent_req_poll_ntstatus(struct tevent_req * req,struct tevent_context * ev,NTSTATUS * status)105 bool tevent_req_poll_ntstatus(struct tevent_req *req,
106 struct tevent_context *ev,
107 NTSTATUS *status)
108 {
109 bool ret = tevent_req_poll(req, ev);
110 if (!ret) {
111 *status = map_nt_error_from_unix_common(errno);
112 }
113 return ret;
114 }
115