qxl: check release info object
[qemu.git] / job-qmp.c
1 /*
2 * QMP interface for background jobs
3 *
4 * Copyright (c) 2011 IBM Corp.
5 * Copyright (c) 2012, 2018 Red Hat, Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25
26 #include "qemu/osdep.h"
27 #include "qemu-common.h"
28 #include "qemu/job.h"
29 #include "qapi/qapi-commands-job.h"
30 #include "qapi/error.h"
31 #include "trace-root.h"
32
33 /* Get a job using its ID and acquire its AioContext */
34 static Job *find_job(const char *id, AioContext **aio_context, Error **errp)
35 {
36 Job *job;
37
38 *aio_context = NULL;
39
40 job = job_get(id);
41 if (!job) {
42 error_setg(errp, "Job not found");
43 return NULL;
44 }
45
46 *aio_context = job->aio_context;
47 aio_context_acquire(*aio_context);
48
49 return job;
50 }
51
52 void qmp_job_cancel(const char *id, Error **errp)
53 {
54 AioContext *aio_context;
55 Job *job = find_job(id, &aio_context, errp);
56
57 if (!job) {
58 return;
59 }
60
61 trace_qmp_job_cancel(job);
62 job_user_cancel(job, true, errp);
63 aio_context_release(aio_context);
64 }
65
66 void qmp_job_pause(const char *id, Error **errp)
67 {
68 AioContext *aio_context;
69 Job *job = find_job(id, &aio_context, errp);
70
71 if (!job) {
72 return;
73 }
74
75 trace_qmp_job_pause(job);
76 job_user_pause(job, errp);
77 aio_context_release(aio_context);
78 }
79
80 void qmp_job_resume(const char *id, Error **errp)
81 {
82 AioContext *aio_context;
83 Job *job = find_job(id, &aio_context, errp);
84
85 if (!job) {
86 return;
87 }
88
89 trace_qmp_job_resume(job);
90 job_user_resume(job, errp);
91 aio_context_release(aio_context);
92 }
93
94 void qmp_job_complete(const char *id, Error **errp)
95 {
96 AioContext *aio_context;
97 Job *job = find_job(id, &aio_context, errp);
98
99 if (!job) {
100 return;
101 }
102
103 trace_qmp_job_complete(job);
104 job_complete(job, errp);
105 aio_context_release(aio_context);
106 }
107
108 void qmp_job_finalize(const char *id, Error **errp)
109 {
110 AioContext *aio_context;
111 Job *job = find_job(id, &aio_context, errp);
112
113 if (!job) {
114 return;
115 }
116
117 trace_qmp_job_finalize(job);
118 job_finalize(job, errp);
119 aio_context_release(aio_context);
120 }
121
122 void qmp_job_dismiss(const char *id, Error **errp)
123 {
124 AioContext *aio_context;
125 Job *job = find_job(id, &aio_context, errp);
126
127 if (!job) {
128 return;
129 }
130
131 trace_qmp_job_dismiss(job);
132 job_dismiss(&job, errp);
133 aio_context_release(aio_context);
134 }
135
136 static JobInfo *job_query_single(Job *job, Error **errp)
137 {
138 JobInfo *info;
139
140 assert(!job_is_internal(job));
141
142 info = g_new(JobInfo, 1);
143 *info = (JobInfo) {
144 .id = g_strdup(job->id),
145 .type = job_type(job),
146 .status = job->status,
147 .current_progress = job->progress_current,
148 .total_progress = job->progress_total,
149 .has_error = !!job->err,
150 .error = job->err ? \
151 g_strdup(error_get_pretty(job->err)) : NULL,
152 };
153
154 return info;
155 }
156
157 JobInfoList *qmp_query_jobs(Error **errp)
158 {
159 JobInfoList *head = NULL, **p_next = &head;
160 Job *job;
161
162 for (job = job_next(NULL); job; job = job_next(job)) {
163 JobInfoList *elem;
164 AioContext *aio_context;
165
166 if (job_is_internal(job)) {
167 continue;
168 }
169 elem = g_new0(JobInfoList, 1);
170 aio_context = job->aio_context;
171 aio_context_acquire(aio_context);
172 elem->value = job_query_single(job, errp);
173 aio_context_release(aio_context);
174 if (!elem->value) {
175 g_free(elem);
176 qapi_free_JobInfoList(head);
177 return NULL;
178 }
179 *p_next = elem;
180 p_next = &elem->next;
181 }
182
183 return head;
184 }