2 * Copyright (C) 2019 Simon Marchi <simon.marchi@efficios.com>
4 * SPDX-License-Identifier: LGPL-2.1-only
9 #include <common/error.h>
10 #include <common/macros.h>
11 #include <lttng/action/action-internal.h>
12 #include <lttng/action/rotate-session-internal.h>
13 #include <lttng/action/rotate-session.h>
15 struct lttng_action_rotate_session
{
16 struct lttng_action parent
;
22 struct lttng_action_rotate_session_comm
{
23 /* Includes the trailing \0. */
24 uint32_t session_name_len
;
29 * - session name (null terminated)
34 static struct lttng_action_rotate_session
*action_rotate_session_from_action(
35 struct lttng_action
*action
)
39 return container_of(action
, struct lttng_action_rotate_session
, parent
);
42 static const struct lttng_action_rotate_session
*action_rotate_session_from_action_const(
43 const struct lttng_action
*action
)
47 return container_of(action
, struct lttng_action_rotate_session
, parent
);
50 static bool lttng_action_rotate_session_validate(struct lttng_action
*action
)
53 struct lttng_action_rotate_session
*action_rotate_session
;
60 action_rotate_session
= action_rotate_session_from_action(action
);
62 /* A non-empty session name is mandatory. */
63 if (!action_rotate_session
->session_name
||
64 strlen(action_rotate_session
->session_name
) == 0) {
74 static bool lttng_action_rotate_session_is_equal(const struct lttng_action
*_a
, const struct lttng_action
*_b
)
76 bool is_equal
= false;
77 const struct lttng_action_rotate_session
*a
, *b
;
79 a
= action_rotate_session_from_action_const(_a
);
80 b
= action_rotate_session_from_action_const(_b
);
82 /* Action is not valid if this is not true. */
83 assert(a
->session_name
);
84 assert(b
->session_name
);
85 if (strcmp(a
->session_name
, b
->session_name
)) {
93 static int lttng_action_rotate_session_serialize(
94 struct lttng_action
*action
, struct lttng_dynamic_buffer
*buf
)
96 struct lttng_action_rotate_session
*action_rotate_session
;
97 struct lttng_action_rotate_session_comm comm
;
98 size_t session_name_len
;
104 action_rotate_session
= action_rotate_session_from_action(action
);
106 assert(action_rotate_session
->session_name
);
108 DBG("Serializing rotate session action: session-name: %s",
109 action_rotate_session
->session_name
);
111 session_name_len
= strlen(action_rotate_session
->session_name
) + 1;
112 comm
.session_name_len
= session_name_len
;
114 ret
= lttng_dynamic_buffer_append(buf
, &comm
, sizeof(comm
));
120 ret
= lttng_dynamic_buffer_append(buf
,
121 action_rotate_session
->session_name
, session_name_len
);
132 static void lttng_action_rotate_session_destroy(struct lttng_action
*action
)
134 struct lttng_action_rotate_session
*action_rotate_session
;
140 action_rotate_session
= action_rotate_session_from_action(action
);
142 free(action_rotate_session
->session_name
);
143 free(action_rotate_session
);
149 ssize_t
lttng_action_rotate_session_create_from_buffer(
150 const struct lttng_buffer_view
*view
,
151 struct lttng_action
**p_action
)
153 ssize_t consumed_len
;
154 struct lttng_action_rotate_session_comm
*comm
;
155 const char *session_name
;
156 struct lttng_action
*action
;
157 enum lttng_action_status status
;
159 action
= lttng_action_rotate_session_create();
165 comm
= (struct lttng_action_rotate_session_comm
*) view
->data
;
166 session_name
= (const char *) &comm
->data
;
168 if (!lttng_buffer_view_contains_string(
169 view
, session_name
, comm
->session_name_len
)) {
174 status
= lttng_action_rotate_session_set_session_name(
175 action
, session_name
);
176 if (status
!= LTTNG_ACTION_STATUS_OK
) {
181 consumed_len
= sizeof(struct lttng_action_rotate_session_comm
) +
182 comm
->session_name_len
;
187 lttng_action_rotate_session_destroy(action
);
192 struct lttng_action
*lttng_action_rotate_session_create(void)
194 struct lttng_action
*action
;
196 action
= zmalloc(sizeof(struct lttng_action_rotate_session
));
201 lttng_action_init(action
, LTTNG_ACTION_TYPE_ROTATE_SESSION
,
202 lttng_action_rotate_session_validate
,
203 lttng_action_rotate_session_serialize
,
204 lttng_action_rotate_session_is_equal
,
205 lttng_action_rotate_session_destroy
);
211 enum lttng_action_status
lttng_action_rotate_session_set_session_name(
212 struct lttng_action
*action
, const char *session_name
)
214 struct lttng_action_rotate_session
*action_rotate_session
;
215 enum lttng_action_status status
;
217 if (!action
|| !session_name
|| strlen(session_name
) == 0) {
218 status
= LTTNG_ACTION_STATUS_INVALID
;
222 action_rotate_session
= action_rotate_session_from_action(action
);
224 free(action_rotate_session
->session_name
);
226 action_rotate_session
->session_name
= strdup(session_name
);
227 if (!action_rotate_session
->session_name
) {
228 status
= LTTNG_ACTION_STATUS_ERROR
;
232 status
= LTTNG_ACTION_STATUS_OK
;
237 enum lttng_action_status
lttng_action_rotate_session_get_session_name(
238 const struct lttng_action
*action
, const char **session_name
)
240 const struct lttng_action_rotate_session
*action_rotate_session
;
241 enum lttng_action_status status
;
243 if (!action
|| !session_name
) {
244 status
= LTTNG_ACTION_STATUS_INVALID
;
248 action_rotate_session
= action_rotate_session_from_action_const(action
);
250 *session_name
= action_rotate_session
->session_name
;
252 status
= LTTNG_ACTION_STATUS_OK
;