Metadata: add env fields to ease lttng path hierarchy creation for viewer
[lttng-tools.git] / src / common / kernel-ctl / kernel-ctl.c
CommitLineData
ee0326c0 1/*
16421f6e
DG
2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
a6bd6d9b 4 * 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
ee0326c0 5 *
d14d33bf
AM
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License, version 2 only,
8 * as published by the Free Software Foundation.
ee0326c0
DG
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
d14d33bf
AM
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
ee0326c0 18 */
16421f6e 19
6c1c0768 20#define _LGPL_SOURCE
95ba0f2f 21#define __USE_LINUX_IOCTL_DEFS
16421f6e 22#include <sys/ioctl.h>
4dbc372b 23#include <string.h>
46820c8b 24#include <common/align.h>
00a62084 25#include <errno.h>
a6bd6d9b
JG
26#include <stdarg.h>
27#include <assert.h>
16421f6e 28
10a8a223 29#include "kernel-ctl.h"
16421f6e 30#include "kernel-ioctl.h"
16421f6e 31
5226f1bc 32#define LTTNG_IOCTL_CHECK(fildes, request, ...) ({ \
a6bd6d9b
JG
33 int ret = ioctl(fildes, request, ##__VA_ARGS__);\
34 assert(ret <= 0); \
5226f1bc
JG
35 !ret ? 0 : -errno; \
36})
37
38#define LTTNG_IOCTL_NO_CHECK(fildes, request, ...) ({ \
39 int ret = ioctl(fildes, request, ##__VA_ARGS__);\
40 ret >= 0 ? ret : -errno; \
a6bd6d9b
JG
41})
42
4dbc372b
JD
43/*
44 * This flag indicates which version of the kernel ABI to use. The old
45 * ABI (namespace _old) does not support a 32-bit user-space when the
46 * kernel is 64-bit. The old ABI is kept here for compatibility but is
47 * deprecated and will be removed eventually.
48 */
49static int lttng_kernel_use_old_abi = -1;
50
51/*
52 * Execute the new or old ioctl depending on the ABI version.
53 * If the ABI version is not determined yet (lttng_kernel_use_old_abi = -1),
54 * this function tests if the new ABI is available and otherwise fallbacks
55 * on the old one.
56 * This function takes the fd on which the ioctl must be executed and the old
57 * and new request codes.
58 * It returns the return value of the ioctl executed.
59 */
60static inline int compat_ioctl_no_arg(int fd, unsigned long oldname,
61 unsigned long newname)
62{
63 int ret;
64
65 if (lttng_kernel_use_old_abi == -1) {
5226f1bc 66 ret = LTTNG_IOCTL_NO_CHECK(fd, newname);
4dbc372b
JD
67 if (!ret) {
68 lttng_kernel_use_old_abi = 0;
69 goto end;
70 }
71 lttng_kernel_use_old_abi = 1;
72 }
73 if (lttng_kernel_use_old_abi) {
5226f1bc 74 ret = LTTNG_IOCTL_NO_CHECK(fd, oldname);
4dbc372b 75 } else {
5226f1bc 76 ret = LTTNG_IOCTL_NO_CHECK(fd, newname);
4dbc372b
JD
77 }
78
79end:
80 return ret;
81}
82
964ccb60 83int kernctl_create_session(int fd)
d65106b1 84{
4dbc372b
JD
85 return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_SESSION,
86 LTTNG_KERNEL_SESSION);
d65106b1
DG
87}
88
964ccb60
MD
89/* open the metadata global channel */
90int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops)
f3ed775e 91{
4dbc372b
JD
92 struct lttng_kernel_channel channel;
93
94 if (lttng_kernel_use_old_abi) {
10600be0
MD
95 struct lttng_kernel_old_channel old_channel;
96
97 memset(&old_channel, 0, sizeof(old_channel));
4dbc372b
JD
98 old_channel.overwrite = chops->overwrite;
99 old_channel.subbuf_size = chops->subbuf_size;
100 old_channel.num_subbuf = chops->num_subbuf;
101 old_channel.switch_timer_interval = chops->switch_timer_interval;
102 old_channel.read_timer_interval = chops->read_timer_interval;
103 old_channel.output = chops->output;
f853c53a
DG
104
105 memset(old_channel.padding, 0, sizeof(old_channel.padding));
106 /*
107 * The new channel padding is smaller than the old ABI so we use the
108 * new ABI padding size for the memcpy.
109 */
110 memcpy(old_channel.padding, chops->padding, sizeof(chops->padding));
4dbc372b 111
5226f1bc
JG
112 return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_OLD_METADATA,
113 &old_channel);
4dbc372b
JD
114 }
115
10600be0 116 memset(&channel, 0, sizeof(channel));
4dbc372b
JD
117 channel.overwrite = chops->overwrite;
118 channel.subbuf_size = chops->subbuf_size;
119 channel.num_subbuf = chops->num_subbuf;
120 channel.switch_timer_interval = chops->switch_timer_interval;
121 channel.read_timer_interval = chops->read_timer_interval;
122 channel.output = chops->output;
ea207e3b 123 memcpy(channel.padding, chops->padding, sizeof(chops->padding));
4dbc372b 124
5226f1bc 125 return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_METADATA, &channel);
f3ed775e
DG
126}
127
128int kernctl_create_channel(int fd, struct lttng_channel_attr *chops)
16421f6e 129{
4dbc372b
JD
130 struct lttng_kernel_channel channel;
131
c74101ef 132 memset(&channel, 0, sizeof(channel));
4dbc372b
JD
133 if (lttng_kernel_use_old_abi) {
134 struct lttng_kernel_old_channel old_channel;
135
136 old_channel.overwrite = chops->overwrite;
137 old_channel.subbuf_size = chops->subbuf_size;
138 old_channel.num_subbuf = chops->num_subbuf;
139 old_channel.switch_timer_interval = chops->switch_timer_interval;
140 old_channel.read_timer_interval = chops->read_timer_interval;
141 old_channel.output = chops->output;
f853c53a
DG
142
143 memset(old_channel.padding, 0, sizeof(old_channel.padding));
144 /*
145 * The new channel padding is smaller than the old ABI so we use the
146 * new ABI padding size for the memcpy.
147 */
148 memcpy(old_channel.padding, chops->padding, sizeof(chops->padding));
4dbc372b 149
5226f1bc
JG
150 return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_OLD_CHANNEL,
151 &old_channel);
4dbc372b
JD
152 }
153
154 channel.overwrite = chops->overwrite;
155 channel.subbuf_size = chops->subbuf_size;
156 channel.num_subbuf = chops->num_subbuf;
157 channel.switch_timer_interval = chops->switch_timer_interval;
158 channel.read_timer_interval = chops->read_timer_interval;
159 channel.output = chops->output;
ea207e3b 160 memcpy(channel.padding, chops->padding, sizeof(chops->padding));
4dbc372b 161
5226f1bc 162 return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_CHANNEL, &channel);
16421f6e
DG
163}
164
46820c8b
MD
165int kernctl_syscall_mask(int fd, char **syscall_mask, uint32_t *nr_bits)
166{
167 struct lttng_kernel_syscall_mask kmask_len, *kmask = NULL;
168 size_t array_alloc_len;
169 char *new_mask;
170 int ret = 0;
171
172 if (!syscall_mask) {
173 ret = -1;
174 goto end;
175 }
176
177 if (!nr_bits) {
178 ret = -1;
179 goto end;
180 }
181
182 kmask_len.len = 0;
5226f1bc 183 ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SYSCALL_MASK, &kmask_len);
46820c8b
MD
184 if (ret) {
185 goto end;
186 }
187
188 array_alloc_len = ALIGN(kmask_len.len, 8) >> 3;
834978fd 189
46820c8b
MD
190 kmask = zmalloc(sizeof(*kmask) + array_alloc_len);
191 if (!kmask) {
192 ret = -1;
193 goto end;
194 }
195
196 kmask->len = kmask_len.len;
5226f1bc 197 ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SYSCALL_MASK, kmask);
46820c8b
MD
198 if (ret) {
199 goto end;
200 }
201
834978fd 202 new_mask = realloc(*syscall_mask, array_alloc_len);
46820c8b
MD
203 if (!new_mask) {
204 ret = -1;
205 goto end;
206 }
207 memcpy(new_mask, kmask->mask, array_alloc_len);
208 *syscall_mask = new_mask;
209 *nr_bits = kmask->len;
210
211end:
212 free(kmask);
213 return ret;
214}
215
ccf10263
MD
216int kernctl_track_pid(int fd, int pid)
217{
5226f1bc 218 return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_TRACK_PID, pid);
ccf10263
MD
219}
220
221int kernctl_untrack_pid(int fd, int pid)
222{
5226f1bc 223 return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_UNTRACK_PID, pid);
ccf10263
MD
224}
225
a5dfbb9d
MD
226int kernctl_list_tracker_pids(int fd)
227{
5226f1bc 228 return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS);
a5dfbb9d
MD
229}
230
eded6438 231int kernctl_session_regenerate_metadata(int fd)
93ec662e 232{
5226f1bc 233 return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_METADATA_REGEN);
93ec662e
JD
234}
235
c2561365
JD
236int kernctl_session_regenerate_statedump(int fd)
237{
238 return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_STATEDUMP);
239}
240
964ccb60 241int kernctl_create_stream(int fd)
16421f6e 242{
4dbc372b
JD
243 return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_STREAM,
244 LTTNG_KERNEL_STREAM);
16421f6e
DG
245}
246
964ccb60 247int kernctl_create_event(int fd, struct lttng_kernel_event *ev)
16421f6e 248{
4dbc372b
JD
249 if (lttng_kernel_use_old_abi) {
250 struct lttng_kernel_old_event old_event;
251
10600be0 252 memset(&old_event, 0, sizeof(old_event));
4dbc372b
JD
253 memcpy(old_event.name, ev->name, sizeof(old_event.name));
254 old_event.instrumentation = ev->instrumentation;
255 switch (ev->instrumentation) {
256 case LTTNG_KERNEL_KPROBE:
257 old_event.u.kprobe.addr = ev->u.kprobe.addr;
258 old_event.u.kprobe.offset = ev->u.kprobe.offset;
259 memcpy(old_event.u.kprobe.symbol_name,
260 ev->u.kprobe.symbol_name,
261 sizeof(old_event.u.kprobe.symbol_name));
262 break;
263 case LTTNG_KERNEL_KRETPROBE:
264 old_event.u.kretprobe.addr = ev->u.kretprobe.addr;
265 old_event.u.kretprobe.offset = ev->u.kretprobe.offset;
266 memcpy(old_event.u.kretprobe.symbol_name,
267 ev->u.kretprobe.symbol_name,
268 sizeof(old_event.u.kretprobe.symbol_name));
269 break;
270 case LTTNG_KERNEL_FUNCTION:
271 memcpy(old_event.u.ftrace.symbol_name,
272 ev->u.ftrace.symbol_name,
273 sizeof(old_event.u.ftrace.symbol_name));
274 break;
275 default:
276 break;
277 }
278
5226f1bc
JG
279 return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_OLD_EVENT,
280 &old_event);
4dbc372b 281 }
5226f1bc 282 return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_EVENT, ev);
16421f6e
DG
283}
284
964ccb60 285int kernctl_add_context(int fd, struct lttng_kernel_context *ctx)
16421f6e 286{
4dbc372b
JD
287 if (lttng_kernel_use_old_abi) {
288 struct lttng_kernel_old_context old_ctx;
289
10600be0 290 memset(&old_ctx, 0, sizeof(old_ctx));
4dbc372b
JD
291 old_ctx.ctx = ctx->ctx;
292 /* only type that uses the union */
aa3514e9 293 if (ctx->ctx == LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER) {
4dbc372b
JD
294 old_ctx.u.perf_counter.type =
295 ctx->u.perf_counter.type;
296 old_ctx.u.perf_counter.config =
297 ctx->u.perf_counter.config;
298 memcpy(old_ctx.u.perf_counter.name,
299 ctx->u.perf_counter.name,
300 sizeof(old_ctx.u.perf_counter.name));
301 }
5226f1bc 302 return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_OLD_CONTEXT, &old_ctx);
4dbc372b 303 }
5226f1bc 304 return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_CONTEXT, ctx);
16421f6e
DG
305}
306
964ccb60 307
5226f1bc 308/* Enable event, channel and session LTTNG_IOCTL_CHECK */
f3ed775e
DG
309int kernctl_enable(int fd)
310{
4dbc372b
JD
311 return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_ENABLE,
312 LTTNG_KERNEL_ENABLE);
f3ed775e
DG
313}
314
5226f1bc 315/* Disable event, channel and session LTTNG_IOCTL_CHECK */
f3ed775e
DG
316int kernctl_disable(int fd)
317{
4dbc372b
JD
318 return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_DISABLE,
319 LTTNG_KERNEL_DISABLE);
f3ed775e
DG
320}
321
964ccb60 322int kernctl_start_session(int fd)
16421f6e 323{
4dbc372b
JD
324 return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_SESSION_START,
325 LTTNG_KERNEL_SESSION_START);
964ccb60
MD
326}
327
328int kernctl_stop_session(int fd)
329{
4dbc372b
JD
330 return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_SESSION_STOP,
331 LTTNG_KERNEL_SESSION_STOP);
16421f6e
DG
332}
333
00a62084
MD
334int kernctl_filter(int fd, struct lttng_filter_bytecode *filter)
335{
336 struct lttng_kernel_filter_bytecode *kb;
337 uint32_t len;
338 int ret;
339
340 /* Translate bytecode to kernel bytecode */
341 kb = zmalloc(sizeof(*kb) + filter->len);
342 if (!kb)
343 return -ENOMEM;
344 kb->len = len = filter->len;
345 kb->reloc_offset = filter->reloc_table_offset;
346 kb->seqnum = filter->seqnum;
347 memcpy(kb->data, filter->data, len);
5226f1bc 348 ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_FILTER, kb);
00a62084
MD
349 free(kb);
350 return ret;
351}
352
1ab8c2ad
FD
353int kernctl_add_callsite(int fd, struct lttng_kernel_event_callsite *callsite)
354{
355 return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ADD_CALLSITE, callsite);
356}
357
964ccb60
MD
358int kernctl_tracepoint_list(int fd)
359{
4dbc372b
JD
360 return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_TRACEPOINT_LIST,
361 LTTNG_KERNEL_TRACEPOINT_LIST);
964ccb60
MD
362}
363
d02666a9
MD
364int kernctl_syscall_list(int fd)
365{
5226f1bc 366 return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_SYSCALL_LIST);
d02666a9
MD
367}
368
964ccb60
MD
369int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v)
370{
4dbc372b
JD
371 int ret;
372
373 if (lttng_kernel_use_old_abi == -1) {
5226f1bc 374 ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_TRACER_VERSION, v);
4dbc372b
JD
375 if (!ret) {
376 lttng_kernel_use_old_abi = 0;
377 goto end;
378 }
379 lttng_kernel_use_old_abi = 1;
380 }
381 if (lttng_kernel_use_old_abi) {
382 struct lttng_kernel_old_tracer_version old_v;
383
5226f1bc 384 ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_OLD_TRACER_VERSION, &old_v);
4dbc372b
JD
385 if (ret) {
386 goto end;
387 }
388 v->major = old_v.major;
389 v->minor = old_v.minor;
390 v->patchlevel = old_v.patchlevel;
391 } else {
5226f1bc 392 ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_TRACER_VERSION, v);
4dbc372b
JD
393 }
394
395end:
396 return ret;
964ccb60
MD
397}
398
c052142c
MD
399int kernctl_tracer_abi_version(int fd,
400 struct lttng_kernel_tracer_abi_version *v)
401{
5226f1bc 402 return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_TRACER_ABI_VERSION, v);
c052142c
MD
403}
404
964ccb60
MD
405int kernctl_wait_quiescent(int fd)
406{
4dbc372b
JD
407 return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_WAIT_QUIESCENT,
408 LTTNG_KERNEL_WAIT_QUIESCENT);
964ccb60
MD
409}
410
964ccb60
MD
411int kernctl_buffer_flush(int fd)
412{
5226f1bc 413 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_FLUSH);
964ccb60
MD
414}
415
f22dd891
MD
416int kernctl_buffer_flush_empty(int fd)
417{
418 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_FLUSH_EMPTY);
419}
420
93ec662e
JD
421/* returns the version of the metadata. */
422int kernctl_get_metadata_version(int fd, uint64_t *version)
423{
5226f1bc 424 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_METADATA_VERSION, version);
93ec662e
JD
425}
426
8024cc8c
JD
427int kernctl_metadata_cache_dump(int fd)
428{
429 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_METADATA_CACHE_DUMP);
430}
964ccb60
MD
431
432/* Buffer operations */
433
434/* For mmap mode, readable without "get" operation */
435
16421f6e
DG
436/* returns the length to mmap. */
437int kernctl_get_mmap_len(int fd, unsigned long *len)
438{
5226f1bc 439 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_MMAP_LEN, len);
16421f6e
DG
440}
441
964ccb60
MD
442/* returns the maximum size for sub-buffers. */
443int kernctl_get_max_subbuf_size(int fd, unsigned long *len)
444{
5226f1bc 445 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len);
964ccb60
MD
446}
447
448/*
449 * For mmap mode, operate on the current packet (between get/put or
450 * get_next/put_next).
451 */
452
16421f6e
DG
453/* returns the offset of the subbuffer belonging to the mmap reader. */
454int kernctl_get_mmap_read_offset(int fd, unsigned long *off)
455{
5226f1bc 456 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off);
16421f6e
DG
457}
458
964ccb60
MD
459/* returns the size of the current sub-buffer, without padding (for mmap). */
460int kernctl_get_subbuf_size(int fd, unsigned long *len)
16421f6e 461{
5226f1bc 462 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_SUBBUF_SIZE, len);
16421f6e
DG
463}
464
465/* returns the size of the current sub-buffer, without padding (for mmap). */
466int kernctl_get_padded_subbuf_size(int fd, unsigned long *len)
467{
5226f1bc 468 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len);
16421f6e
DG
469}
470
964ccb60
MD
471/* Get exclusive read access to the next sub-buffer that can be read. */
472int kernctl_get_next_subbuf(int fd)
16421f6e 473{
5226f1bc 474 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_NEXT_SUBBUF);
16421f6e
DG
475}
476
d4a1283e 477
16421f6e
DG
478/* Release exclusive sub-buffer access, move consumer forward. */
479int kernctl_put_next_subbuf(int fd)
480{
5226f1bc 481 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_PUT_NEXT_SUBBUF);
16421f6e
DG
482}
483
964ccb60 484/* snapshot */
16421f6e
DG
485
486/* Get a snapshot of the current ring buffer producer and consumer positions */
487int kernctl_snapshot(int fd)
488{
5226f1bc 489 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_SNAPSHOT);
16421f6e
DG
490}
491
b007ec59
JG
492/*
493 * Get a snapshot of the current ring buffer producer and consumer positions,
494 * regardless of whether or not the two positions are contained within the
495 * same sub-buffer.
496 */
497int kernctl_snapshot_sample_positions(int fd)
498{
499 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS);
500}
501
16421f6e
DG
502/* Get the consumer position (iteration start) */
503int kernctl_snapshot_get_consumed(int fd, unsigned long *pos)
504{
5226f1bc 505 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos);
16421f6e
DG
506}
507
508/* Get the producer position (iteration end) */
509int kernctl_snapshot_get_produced(int fd, unsigned long *pos)
510{
5226f1bc 511 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos);
16421f6e
DG
512}
513
964ccb60
MD
514/* Get exclusive read access to the specified sub-buffer position */
515int kernctl_get_subbuf(int fd, unsigned long *len)
f3ed775e 516{
5226f1bc 517 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_SUBBUF, len);
f3ed775e 518}
d0254c7c 519
964ccb60
MD
520/* Release exclusive sub-buffer access */
521int kernctl_put_subbuf(int fd)
d0254c7c 522{
5226f1bc 523 return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_PUT_SUBBUF);
d0254c7c 524}
309167d2
JD
525
526/* Returns the timestamp begin of the current sub-buffer. */
527int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin)
528{
5226f1bc 529 return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN,
a6bd6d9b 530 timestamp_begin);
309167d2
JD
531}
532
533/* Returns the timestamp end of the current sub-buffer. */
534int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end)
535{
5226f1bc 536 return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_TIMESTAMP_END,
a6bd6d9b 537 timestamp_end);
309167d2
JD
538}
539
540/* Returns the number of discarded events in the current sub-buffer. */
541int kernctl_get_events_discarded(int fd, uint64_t *events_discarded)
542{
5226f1bc 543 return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED,
a6bd6d9b 544 events_discarded);
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545}
546
547/* Returns the content size in the current sub-buffer. */
548int kernctl_get_content_size(int fd, uint64_t *content_size)
549{
5226f1bc 550 return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_CONTENT_SIZE,
a6bd6d9b 551 content_size);
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552}
553
554/* Returns the packet size in the current sub-buffer. */
555int kernctl_get_packet_size(int fd, uint64_t *packet_size)
556{
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557 return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_PACKET_SIZE,
558 packet_size);
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559}
560
561/* Returns the stream id of the current sub-buffer. */
562int kernctl_get_stream_id(int fd, uint64_t *stream_id)
563{
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564 return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_STREAM_ID,
565 stream_id);
309167d2 566}
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567
568/* Returns the current timestamp. */
569int kernctl_get_current_timestamp(int fd, uint64_t *ts)
570{
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571 return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP,
572 ts);
d3e2ba59 573}
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574
575/* Returns the packet sequence number of the current sub-buffer. */
576int kernctl_get_sequence_number(int fd, uint64_t *seq)
577{
5226f1bc 578 return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_SEQ_NUM, seq);
fb83fe64 579}
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580
581/* Returns the stream instance id. */
582int kernctl_get_instance_id(int fd, uint64_t *id)
583{
5226f1bc 584 return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_INSTANCE_ID, id);
000fa86f 585}
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