Commit | Line | Data |
---|---|---|
ee0326c0 | 1 | /* |
ab5be9fa MJ |
2 | * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca> |
3 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
4 | * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
ee0326c0 | 5 | * |
ab5be9fa | 6 | * SPDX-License-Identifier: GPL-2.0-only |
ee0326c0 | 7 | * |
ee0326c0 | 8 | */ |
16421f6e | 9 | |
159b042f | 10 | #include "lttng/tracker.h" |
6c1c0768 | 11 | #define _LGPL_SOURCE |
95ba0f2f | 12 | #define __USE_LINUX_IOCTL_DEFS |
16421f6e | 13 | #include <sys/ioctl.h> |
4dbc372b | 14 | #include <string.h> |
46820c8b | 15 | #include <common/align.h> |
8ff4109e | 16 | #include <common/macros.h> |
edf4b93e | 17 | #include <common/compat/errno.h> |
a6bd6d9b JG |
18 | #include <stdarg.h> |
19 | #include <assert.h> | |
e04b2181 | 20 | #include <common/time.h> |
16421f6e | 21 | |
10a8a223 | 22 | #include "kernel-ctl.h" |
16421f6e | 23 | #include "kernel-ioctl.h" |
16421f6e | 24 | |
5226f1bc | 25 | #define LTTNG_IOCTL_CHECK(fildes, request, ...) ({ \ |
a6bd6d9b JG |
26 | int ret = ioctl(fildes, request, ##__VA_ARGS__);\ |
27 | assert(ret <= 0); \ | |
5226f1bc JG |
28 | !ret ? 0 : -errno; \ |
29 | }) | |
30 | ||
31 | #define LTTNG_IOCTL_NO_CHECK(fildes, request, ...) ({ \ | |
32 | int ret = ioctl(fildes, request, ##__VA_ARGS__);\ | |
33 | ret >= 0 ? ret : -errno; \ | |
a6bd6d9b JG |
34 | }) |
35 | ||
4dbc372b JD |
36 | /* |
37 | * This flag indicates which version of the kernel ABI to use. The old | |
38 | * ABI (namespace _old) does not support a 32-bit user-space when the | |
39 | * kernel is 64-bit. The old ABI is kept here for compatibility but is | |
40 | * deprecated and will be removed eventually. | |
41 | */ | |
42 | static int lttng_kernel_use_old_abi = -1; | |
43 | ||
44 | /* | |
45 | * Execute the new or old ioctl depending on the ABI version. | |
46 | * If the ABI version is not determined yet (lttng_kernel_use_old_abi = -1), | |
47 | * this function tests if the new ABI is available and otherwise fallbacks | |
48 | * on the old one. | |
49 | * This function takes the fd on which the ioctl must be executed and the old | |
50 | * and new request codes. | |
51 | * It returns the return value of the ioctl executed. | |
52 | */ | |
53 | static inline int compat_ioctl_no_arg(int fd, unsigned long oldname, | |
54 | unsigned long newname) | |
55 | { | |
56 | int ret; | |
57 | ||
58 | if (lttng_kernel_use_old_abi == -1) { | |
5226f1bc | 59 | ret = LTTNG_IOCTL_NO_CHECK(fd, newname); |
4dbc372b JD |
60 | if (!ret) { |
61 | lttng_kernel_use_old_abi = 0; | |
62 | goto end; | |
63 | } | |
64 | lttng_kernel_use_old_abi = 1; | |
65 | } | |
66 | if (lttng_kernel_use_old_abi) { | |
5226f1bc | 67 | ret = LTTNG_IOCTL_NO_CHECK(fd, oldname); |
4dbc372b | 68 | } else { |
5226f1bc | 69 | ret = LTTNG_IOCTL_NO_CHECK(fd, newname); |
4dbc372b JD |
70 | } |
71 | ||
72 | end: | |
73 | return ret; | |
74 | } | |
75 | ||
964ccb60 | 76 | int kernctl_create_session(int fd) |
d65106b1 | 77 | { |
4dbc372b JD |
78 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_SESSION, |
79 | LTTNG_KERNEL_SESSION); | |
d65106b1 DG |
80 | } |
81 | ||
964ccb60 MD |
82 | /* open the metadata global channel */ |
83 | int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops) | |
f3ed775e | 84 | { |
4dbc372b JD |
85 | struct lttng_kernel_channel channel; |
86 | ||
87 | if (lttng_kernel_use_old_abi) { | |
10600be0 MD |
88 | struct lttng_kernel_old_channel old_channel; |
89 | ||
90 | memset(&old_channel, 0, sizeof(old_channel)); | |
4dbc372b JD |
91 | old_channel.overwrite = chops->overwrite; |
92 | old_channel.subbuf_size = chops->subbuf_size; | |
93 | old_channel.num_subbuf = chops->num_subbuf; | |
94 | old_channel.switch_timer_interval = chops->switch_timer_interval; | |
95 | old_channel.read_timer_interval = chops->read_timer_interval; | |
96 | old_channel.output = chops->output; | |
f853c53a DG |
97 | |
98 | memset(old_channel.padding, 0, sizeof(old_channel.padding)); | |
99 | /* | |
100 | * The new channel padding is smaller than the old ABI so we use the | |
101 | * new ABI padding size for the memcpy. | |
102 | */ | |
103 | memcpy(old_channel.padding, chops->padding, sizeof(chops->padding)); | |
4dbc372b | 104 | |
5226f1bc JG |
105 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_OLD_METADATA, |
106 | &old_channel); | |
4dbc372b JD |
107 | } |
108 | ||
10600be0 | 109 | memset(&channel, 0, sizeof(channel)); |
4dbc372b JD |
110 | channel.overwrite = chops->overwrite; |
111 | channel.subbuf_size = chops->subbuf_size; | |
112 | channel.num_subbuf = chops->num_subbuf; | |
113 | channel.switch_timer_interval = chops->switch_timer_interval; | |
114 | channel.read_timer_interval = chops->read_timer_interval; | |
115 | channel.output = chops->output; | |
ea207e3b | 116 | memcpy(channel.padding, chops->padding, sizeof(chops->padding)); |
4dbc372b | 117 | |
5226f1bc | 118 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_METADATA, &channel); |
f3ed775e DG |
119 | } |
120 | ||
121 | int kernctl_create_channel(int fd, struct lttng_channel_attr *chops) | |
16421f6e | 122 | { |
4dbc372b JD |
123 | struct lttng_kernel_channel channel; |
124 | ||
c74101ef | 125 | memset(&channel, 0, sizeof(channel)); |
4dbc372b JD |
126 | if (lttng_kernel_use_old_abi) { |
127 | struct lttng_kernel_old_channel old_channel; | |
128 | ||
129 | old_channel.overwrite = chops->overwrite; | |
130 | old_channel.subbuf_size = chops->subbuf_size; | |
131 | old_channel.num_subbuf = chops->num_subbuf; | |
132 | old_channel.switch_timer_interval = chops->switch_timer_interval; | |
133 | old_channel.read_timer_interval = chops->read_timer_interval; | |
134 | old_channel.output = chops->output; | |
f853c53a DG |
135 | |
136 | memset(old_channel.padding, 0, sizeof(old_channel.padding)); | |
137 | /* | |
138 | * The new channel padding is smaller than the old ABI so we use the | |
139 | * new ABI padding size for the memcpy. | |
140 | */ | |
141 | memcpy(old_channel.padding, chops->padding, sizeof(chops->padding)); | |
4dbc372b | 142 | |
5226f1bc JG |
143 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_OLD_CHANNEL, |
144 | &old_channel); | |
4dbc372b JD |
145 | } |
146 | ||
147 | channel.overwrite = chops->overwrite; | |
148 | channel.subbuf_size = chops->subbuf_size; | |
149 | channel.num_subbuf = chops->num_subbuf; | |
150 | channel.switch_timer_interval = chops->switch_timer_interval; | |
151 | channel.read_timer_interval = chops->read_timer_interval; | |
152 | channel.output = chops->output; | |
ea207e3b | 153 | memcpy(channel.padding, chops->padding, sizeof(chops->padding)); |
4dbc372b | 154 | |
5226f1bc | 155 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_CHANNEL, &channel); |
16421f6e DG |
156 | } |
157 | ||
46820c8b MD |
158 | int kernctl_syscall_mask(int fd, char **syscall_mask, uint32_t *nr_bits) |
159 | { | |
160 | struct lttng_kernel_syscall_mask kmask_len, *kmask = NULL; | |
161 | size_t array_alloc_len; | |
162 | char *new_mask; | |
163 | int ret = 0; | |
164 | ||
165 | if (!syscall_mask) { | |
166 | ret = -1; | |
167 | goto end; | |
168 | } | |
169 | ||
170 | if (!nr_bits) { | |
171 | ret = -1; | |
172 | goto end; | |
173 | } | |
174 | ||
175 | kmask_len.len = 0; | |
5226f1bc | 176 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SYSCALL_MASK, &kmask_len); |
46820c8b MD |
177 | if (ret) { |
178 | goto end; | |
179 | } | |
180 | ||
181 | array_alloc_len = ALIGN(kmask_len.len, 8) >> 3; | |
834978fd | 182 | |
46820c8b MD |
183 | kmask = zmalloc(sizeof(*kmask) + array_alloc_len); |
184 | if (!kmask) { | |
185 | ret = -1; | |
186 | goto end; | |
187 | } | |
188 | ||
189 | kmask->len = kmask_len.len; | |
5226f1bc | 190 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SYSCALL_MASK, kmask); |
46820c8b MD |
191 | if (ret) { |
192 | goto end; | |
193 | } | |
194 | ||
834978fd | 195 | new_mask = realloc(*syscall_mask, array_alloc_len); |
46820c8b MD |
196 | if (!new_mask) { |
197 | ret = -1; | |
198 | goto end; | |
199 | } | |
200 | memcpy(new_mask, kmask->mask, array_alloc_len); | |
201 | *syscall_mask = new_mask; | |
202 | *nr_bits = kmask->len; | |
203 | ||
204 | end: | |
205 | free(kmask); | |
206 | return ret; | |
207 | } | |
208 | ||
ccf10263 MD |
209 | int kernctl_track_pid(int fd, int pid) |
210 | { | |
5226f1bc | 211 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_TRACK_PID, pid); |
ccf10263 MD |
212 | } |
213 | ||
214 | int kernctl_untrack_pid(int fd, int pid) | |
215 | { | |
5226f1bc | 216 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_UNTRACK_PID, pid); |
ccf10263 MD |
217 | } |
218 | ||
a5dfbb9d MD |
219 | int kernctl_list_tracker_pids(int fd) |
220 | { | |
5226f1bc | 221 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS); |
a5dfbb9d MD |
222 | } |
223 | ||
d01c0e56 | 224 | static enum lttng_kernel_tracker_type get_kernel_tracker_type( |
159b042f | 225 | enum lttng_process_attr process_attr) |
d01c0e56 | 226 | { |
159b042f JG |
227 | switch (process_attr) { |
228 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
d01c0e56 | 229 | return LTTNG_KERNEL_TRACKER_PID; |
159b042f | 230 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
d01c0e56 | 231 | return LTTNG_KERNEL_TRACKER_VPID; |
159b042f | 232 | case LTTNG_PROCESS_ATTR_USER_ID: |
d01c0e56 | 233 | return LTTNG_KERNEL_TRACKER_UID; |
159b042f | 234 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
d01c0e56 | 235 | return LTTNG_KERNEL_TRACKER_VUID; |
159b042f | 236 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
d01c0e56 | 237 | return LTTNG_KERNEL_TRACKER_GID; |
159b042f | 238 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
d01c0e56 MD |
239 | return LTTNG_KERNEL_TRACKER_VGID; |
240 | default: | |
241 | return LTTNG_KERNEL_TRACKER_UNKNOWN; | |
242 | } | |
243 | } | |
244 | ||
159b042f | 245 | int kernctl_track_id(int fd, enum lttng_process_attr process_attr, int id) |
d01c0e56 MD |
246 | { |
247 | struct lttng_kernel_tracker_args args; | |
248 | ||
249 | args.id = id; | |
159b042f | 250 | args.type = get_kernel_tracker_type(process_attr); |
d01c0e56 MD |
251 | if (args.type == LTTNG_KERNEL_TRACKER_UNKNOWN) { |
252 | errno = EINVAL; | |
253 | return -1; | |
254 | } | |
255 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_TRACK_ID, &args); | |
256 | } | |
257 | ||
159b042f | 258 | int kernctl_untrack_id(int fd, enum lttng_process_attr process_attr, int id) |
d01c0e56 MD |
259 | { |
260 | struct lttng_kernel_tracker_args args; | |
261 | ||
262 | args.id = id; | |
159b042f | 263 | args.type = get_kernel_tracker_type(process_attr); |
d01c0e56 MD |
264 | if (args.type == LTTNG_KERNEL_TRACKER_UNKNOWN) { |
265 | errno = EINVAL; | |
266 | return -1; | |
267 | } | |
268 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_UNTRACK_ID, &args); | |
269 | } | |
270 | ||
159b042f | 271 | int kernctl_list_tracker_ids(int fd, enum lttng_process_attr process_attr) |
d01c0e56 MD |
272 | { |
273 | struct lttng_kernel_tracker_args args; | |
274 | ||
275 | args.id = -1; | |
159b042f | 276 | args.type = get_kernel_tracker_type(process_attr); |
d01c0e56 MD |
277 | if (args.type == LTTNG_KERNEL_TRACKER_UNKNOWN) { |
278 | errno = EINVAL; | |
279 | return -1; | |
280 | } | |
281 | return LTTNG_IOCTL_NO_CHECK( | |
282 | fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_IDS, &args); | |
283 | } | |
284 | ||
eded6438 | 285 | int kernctl_session_regenerate_metadata(int fd) |
93ec662e | 286 | { |
5226f1bc | 287 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_METADATA_REGEN); |
93ec662e JD |
288 | } |
289 | ||
c2561365 JD |
290 | int kernctl_session_regenerate_statedump(int fd) |
291 | { | |
292 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_STATEDUMP); | |
293 | } | |
294 | ||
8ff4109e JR |
295 | int kernctl_session_set_name(int fd, const char *name) |
296 | { | |
297 | int ret; | |
298 | struct lttng_kernel_session_name session_name; | |
299 | ||
300 | ret = lttng_strncpy(session_name.name, name, sizeof(session_name.name)); | |
301 | if (ret) { | |
302 | goto end; | |
303 | } | |
304 | ||
305 | ret = LTTNG_IOCTL_CHECK( | |
306 | fd, LTTNG_KERNEL_SESSION_SET_NAME, &session_name); | |
307 | end: | |
308 | return ret; | |
309 | } | |
310 | ||
e04b2181 JR |
311 | int kernctl_session_set_creation_time(int fd, time_t time) |
312 | { | |
313 | int ret; | |
314 | struct lttng_kernel_session_creation_time creation_time; | |
315 | ||
316 | ret = time_to_iso8601_str(time, creation_time.iso8601, | |
317 | sizeof(creation_time.iso8601)); | |
318 | if (ret) { | |
319 | goto end; | |
320 | } | |
321 | ||
322 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_SET_CREATION_TIME, | |
323 | &creation_time); | |
324 | end: | |
325 | return ret; | |
326 | } | |
327 | ||
964ccb60 | 328 | int kernctl_create_stream(int fd) |
16421f6e | 329 | { |
4dbc372b JD |
330 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_STREAM, |
331 | LTTNG_KERNEL_STREAM); | |
16421f6e DG |
332 | } |
333 | ||
964ccb60 | 334 | int kernctl_create_event(int fd, struct lttng_kernel_event *ev) |
16421f6e | 335 | { |
4dbc372b JD |
336 | if (lttng_kernel_use_old_abi) { |
337 | struct lttng_kernel_old_event old_event; | |
338 | ||
10600be0 | 339 | memset(&old_event, 0, sizeof(old_event)); |
4dbc372b JD |
340 | memcpy(old_event.name, ev->name, sizeof(old_event.name)); |
341 | old_event.instrumentation = ev->instrumentation; | |
342 | switch (ev->instrumentation) { | |
343 | case LTTNG_KERNEL_KPROBE: | |
344 | old_event.u.kprobe.addr = ev->u.kprobe.addr; | |
345 | old_event.u.kprobe.offset = ev->u.kprobe.offset; | |
346 | memcpy(old_event.u.kprobe.symbol_name, | |
347 | ev->u.kprobe.symbol_name, | |
348 | sizeof(old_event.u.kprobe.symbol_name)); | |
349 | break; | |
350 | case LTTNG_KERNEL_KRETPROBE: | |
351 | old_event.u.kretprobe.addr = ev->u.kretprobe.addr; | |
352 | old_event.u.kretprobe.offset = ev->u.kretprobe.offset; | |
353 | memcpy(old_event.u.kretprobe.symbol_name, | |
354 | ev->u.kretprobe.symbol_name, | |
355 | sizeof(old_event.u.kretprobe.symbol_name)); | |
356 | break; | |
357 | case LTTNG_KERNEL_FUNCTION: | |
358 | memcpy(old_event.u.ftrace.symbol_name, | |
359 | ev->u.ftrace.symbol_name, | |
360 | sizeof(old_event.u.ftrace.symbol_name)); | |
361 | break; | |
362 | default: | |
363 | break; | |
364 | } | |
365 | ||
5226f1bc JG |
366 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_OLD_EVENT, |
367 | &old_event); | |
4dbc372b | 368 | } |
5226f1bc | 369 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_EVENT, ev); |
16421f6e DG |
370 | } |
371 | ||
964ccb60 | 372 | int kernctl_add_context(int fd, struct lttng_kernel_context *ctx) |
16421f6e | 373 | { |
4dbc372b JD |
374 | if (lttng_kernel_use_old_abi) { |
375 | struct lttng_kernel_old_context old_ctx; | |
376 | ||
10600be0 | 377 | memset(&old_ctx, 0, sizeof(old_ctx)); |
4dbc372b JD |
378 | old_ctx.ctx = ctx->ctx; |
379 | /* only type that uses the union */ | |
aa3514e9 | 380 | if (ctx->ctx == LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER) { |
4dbc372b JD |
381 | old_ctx.u.perf_counter.type = |
382 | ctx->u.perf_counter.type; | |
383 | old_ctx.u.perf_counter.config = | |
384 | ctx->u.perf_counter.config; | |
385 | memcpy(old_ctx.u.perf_counter.name, | |
386 | ctx->u.perf_counter.name, | |
387 | sizeof(old_ctx.u.perf_counter.name)); | |
388 | } | |
5226f1bc | 389 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_OLD_CONTEXT, &old_ctx); |
4dbc372b | 390 | } |
5226f1bc | 391 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_CONTEXT, ctx); |
16421f6e DG |
392 | } |
393 | ||
964ccb60 | 394 | |
5226f1bc | 395 | /* Enable event, channel and session LTTNG_IOCTL_CHECK */ |
f3ed775e DG |
396 | int kernctl_enable(int fd) |
397 | { | |
4dbc372b JD |
398 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_ENABLE, |
399 | LTTNG_KERNEL_ENABLE); | |
f3ed775e DG |
400 | } |
401 | ||
5226f1bc | 402 | /* Disable event, channel and session LTTNG_IOCTL_CHECK */ |
f3ed775e DG |
403 | int kernctl_disable(int fd) |
404 | { | |
4dbc372b JD |
405 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_DISABLE, |
406 | LTTNG_KERNEL_DISABLE); | |
f3ed775e DG |
407 | } |
408 | ||
964ccb60 | 409 | int kernctl_start_session(int fd) |
16421f6e | 410 | { |
4dbc372b JD |
411 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_SESSION_START, |
412 | LTTNG_KERNEL_SESSION_START); | |
964ccb60 MD |
413 | } |
414 | ||
415 | int kernctl_stop_session(int fd) | |
416 | { | |
4dbc372b JD |
417 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_SESSION_STOP, |
418 | LTTNG_KERNEL_SESSION_STOP); | |
16421f6e DG |
419 | } |
420 | ||
cfb1c9bc JR |
421 | int kernctl_create_event_notifier_group(int fd) |
422 | { | |
423 | return LTTNG_IOCTL_NO_CHECK(fd, | |
424 | LTTNG_KERNEL_EVENT_NOTIFIER_GROUP_CREATE); | |
425 | } | |
426 | ||
427 | int kernctl_create_event_notifier_group_notification_fd(int group_fd) | |
428 | { | |
429 | return LTTNG_IOCTL_NO_CHECK(group_fd, | |
430 | LTTNG_KERNEL_EVENT_NOTIFIER_GROUP_NOTIFICATION_FD); | |
431 | } | |
432 | ||
433 | int kernctl_create_event_notifier(int group_fd, | |
434 | const struct lttng_kernel_event_notifier *event_notifier) | |
435 | { | |
436 | return LTTNG_IOCTL_NO_CHECK(group_fd, | |
437 | LTTNG_KERNEL_EVENT_NOTIFIER_CREATE, event_notifier); | |
438 | } | |
439 | ||
2b00d462 | 440 | int kernctl_filter(int fd, const struct lttng_bytecode *filter) |
00a62084 MD |
441 | { |
442 | struct lttng_kernel_filter_bytecode *kb; | |
443 | uint32_t len; | |
444 | int ret; | |
445 | ||
446 | /* Translate bytecode to kernel bytecode */ | |
447 | kb = zmalloc(sizeof(*kb) + filter->len); | |
448 | if (!kb) | |
449 | return -ENOMEM; | |
450 | kb->len = len = filter->len; | |
451 | kb->reloc_offset = filter->reloc_table_offset; | |
452 | kb->seqnum = filter->seqnum; | |
453 | memcpy(kb->data, filter->data, len); | |
5226f1bc | 454 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_FILTER, kb); |
00a62084 MD |
455 | free(kb); |
456 | return ret; | |
457 | } | |
458 | ||
1ab8c2ad FD |
459 | int kernctl_add_callsite(int fd, struct lttng_kernel_event_callsite *callsite) |
460 | { | |
461 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ADD_CALLSITE, callsite); | |
462 | } | |
463 | ||
964ccb60 MD |
464 | int kernctl_tracepoint_list(int fd) |
465 | { | |
4dbc372b JD |
466 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_TRACEPOINT_LIST, |
467 | LTTNG_KERNEL_TRACEPOINT_LIST); | |
964ccb60 MD |
468 | } |
469 | ||
d02666a9 MD |
470 | int kernctl_syscall_list(int fd) |
471 | { | |
5226f1bc | 472 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_SYSCALL_LIST); |
d02666a9 MD |
473 | } |
474 | ||
964ccb60 MD |
475 | int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v) |
476 | { | |
4dbc372b JD |
477 | int ret; |
478 | ||
479 | if (lttng_kernel_use_old_abi == -1) { | |
5226f1bc | 480 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_TRACER_VERSION, v); |
4dbc372b JD |
481 | if (!ret) { |
482 | lttng_kernel_use_old_abi = 0; | |
483 | goto end; | |
484 | } | |
485 | lttng_kernel_use_old_abi = 1; | |
486 | } | |
487 | if (lttng_kernel_use_old_abi) { | |
488 | struct lttng_kernel_old_tracer_version old_v; | |
489 | ||
5226f1bc | 490 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_OLD_TRACER_VERSION, &old_v); |
4dbc372b JD |
491 | if (ret) { |
492 | goto end; | |
493 | } | |
494 | v->major = old_v.major; | |
495 | v->minor = old_v.minor; | |
496 | v->patchlevel = old_v.patchlevel; | |
497 | } else { | |
5226f1bc | 498 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_TRACER_VERSION, v); |
4dbc372b JD |
499 | } |
500 | ||
501 | end: | |
502 | return ret; | |
964ccb60 MD |
503 | } |
504 | ||
c052142c MD |
505 | int kernctl_tracer_abi_version(int fd, |
506 | struct lttng_kernel_tracer_abi_version *v) | |
507 | { | |
5226f1bc | 508 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_TRACER_ABI_VERSION, v); |
c052142c MD |
509 | } |
510 | ||
964ccb60 MD |
511 | int kernctl_wait_quiescent(int fd) |
512 | { | |
4dbc372b JD |
513 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_OLD_WAIT_QUIESCENT, |
514 | LTTNG_KERNEL_WAIT_QUIESCENT); | |
964ccb60 MD |
515 | } |
516 | ||
964ccb60 MD |
517 | int kernctl_buffer_flush(int fd) |
518 | { | |
5226f1bc | 519 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_FLUSH); |
964ccb60 MD |
520 | } |
521 | ||
f22dd891 MD |
522 | int kernctl_buffer_flush_empty(int fd) |
523 | { | |
524 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_FLUSH_EMPTY); | |
525 | } | |
526 | ||
99930a9d JR |
527 | int kernctl_buffer_clear(int fd) |
528 | { | |
529 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_CLEAR); | |
530 | } | |
531 | ||
41dc93d9 JG |
532 | int kernctl_get_next_subbuf_metadata_check(int fd, bool *consistent) |
533 | { | |
534 | return LTTNG_IOCTL_NO_CHECK(fd, | |
535 | RING_RING_BUFFER_GET_NEXT_SUBBUF_METADATA_CHECK, | |
536 | consistent); | |
537 | } | |
538 | ||
93ec662e JD |
539 | /* returns the version of the metadata. */ |
540 | int kernctl_get_metadata_version(int fd, uint64_t *version) | |
541 | { | |
5226f1bc | 542 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_METADATA_VERSION, version); |
93ec662e JD |
543 | } |
544 | ||
8024cc8c JD |
545 | int kernctl_metadata_cache_dump(int fd) |
546 | { | |
547 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_METADATA_CACHE_DUMP); | |
548 | } | |
964ccb60 MD |
549 | |
550 | /* Buffer operations */ | |
551 | ||
552 | /* For mmap mode, readable without "get" operation */ | |
553 | ||
16421f6e DG |
554 | /* returns the length to mmap. */ |
555 | int kernctl_get_mmap_len(int fd, unsigned long *len) | |
556 | { | |
5226f1bc | 557 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_MMAP_LEN, len); |
16421f6e DG |
558 | } |
559 | ||
964ccb60 MD |
560 | /* returns the maximum size for sub-buffers. */ |
561 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len) | |
562 | { | |
5226f1bc | 563 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len); |
964ccb60 MD |
564 | } |
565 | ||
566 | /* | |
567 | * For mmap mode, operate on the current packet (between get/put or | |
568 | * get_next/put_next). | |
569 | */ | |
570 | ||
16421f6e DG |
571 | /* returns the offset of the subbuffer belonging to the mmap reader. */ |
572 | int kernctl_get_mmap_read_offset(int fd, unsigned long *off) | |
573 | { | |
5226f1bc | 574 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off); |
16421f6e DG |
575 | } |
576 | ||
964ccb60 MD |
577 | /* returns the size of the current sub-buffer, without padding (for mmap). */ |
578 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
16421f6e | 579 | { |
5226f1bc | 580 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_SUBBUF_SIZE, len); |
16421f6e DG |
581 | } |
582 | ||
583 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
584 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len) | |
585 | { | |
5226f1bc | 586 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len); |
16421f6e DG |
587 | } |
588 | ||
964ccb60 MD |
589 | /* Get exclusive read access to the next sub-buffer that can be read. */ |
590 | int kernctl_get_next_subbuf(int fd) | |
16421f6e | 591 | { |
5226f1bc | 592 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_NEXT_SUBBUF); |
16421f6e DG |
593 | } |
594 | ||
d4a1283e | 595 | |
16421f6e DG |
596 | /* Release exclusive sub-buffer access, move consumer forward. */ |
597 | int kernctl_put_next_subbuf(int fd) | |
598 | { | |
5226f1bc | 599 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_PUT_NEXT_SUBBUF); |
16421f6e DG |
600 | } |
601 | ||
964ccb60 | 602 | /* snapshot */ |
16421f6e DG |
603 | |
604 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
605 | int kernctl_snapshot(int fd) | |
606 | { | |
5226f1bc | 607 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_SNAPSHOT); |
16421f6e DG |
608 | } |
609 | ||
b007ec59 JG |
610 | /* |
611 | * Get a snapshot of the current ring buffer producer and consumer positions, | |
612 | * regardless of whether or not the two positions are contained within the | |
613 | * same sub-buffer. | |
614 | */ | |
615 | int kernctl_snapshot_sample_positions(int fd) | |
616 | { | |
617 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS); | |
618 | } | |
619 | ||
16421f6e DG |
620 | /* Get the consumer position (iteration start) */ |
621 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos) | |
622 | { | |
5226f1bc | 623 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos); |
16421f6e DG |
624 | } |
625 | ||
626 | /* Get the producer position (iteration end) */ | |
627 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos) | |
628 | { | |
5226f1bc | 629 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos); |
16421f6e DG |
630 | } |
631 | ||
964ccb60 MD |
632 | /* Get exclusive read access to the specified sub-buffer position */ |
633 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
f3ed775e | 634 | { |
5226f1bc | 635 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_GET_SUBBUF, len); |
f3ed775e | 636 | } |
d0254c7c | 637 | |
964ccb60 MD |
638 | /* Release exclusive sub-buffer access */ |
639 | int kernctl_put_subbuf(int fd) | |
d0254c7c | 640 | { |
5226f1bc | 641 | return LTTNG_IOCTL_CHECK(fd, RING_BUFFER_PUT_SUBBUF); |
d0254c7c | 642 | } |
309167d2 JD |
643 | |
644 | /* Returns the timestamp begin of the current sub-buffer. */ | |
645 | int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin) | |
646 | { | |
5226f1bc | 647 | return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN, |
a6bd6d9b | 648 | timestamp_begin); |
309167d2 JD |
649 | } |
650 | ||
651 | /* Returns the timestamp end of the current sub-buffer. */ | |
652 | int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end) | |
653 | { | |
5226f1bc | 654 | return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_TIMESTAMP_END, |
a6bd6d9b | 655 | timestamp_end); |
309167d2 JD |
656 | } |
657 | ||
658 | /* Returns the number of discarded events in the current sub-buffer. */ | |
659 | int kernctl_get_events_discarded(int fd, uint64_t *events_discarded) | |
660 | { | |
5226f1bc | 661 | return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED, |
a6bd6d9b | 662 | events_discarded); |
309167d2 JD |
663 | } |
664 | ||
665 | /* Returns the content size in the current sub-buffer. */ | |
666 | int kernctl_get_content_size(int fd, uint64_t *content_size) | |
667 | { | |
5226f1bc | 668 | return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_CONTENT_SIZE, |
a6bd6d9b | 669 | content_size); |
309167d2 JD |
670 | } |
671 | ||
672 | /* Returns the packet size in the current sub-buffer. */ | |
673 | int kernctl_get_packet_size(int fd, uint64_t *packet_size) | |
674 | { | |
5226f1bc JG |
675 | return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_PACKET_SIZE, |
676 | packet_size); | |
309167d2 JD |
677 | } |
678 | ||
679 | /* Returns the stream id of the current sub-buffer. */ | |
680 | int kernctl_get_stream_id(int fd, uint64_t *stream_id) | |
681 | { | |
5226f1bc JG |
682 | return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_STREAM_ID, |
683 | stream_id); | |
309167d2 | 684 | } |
d3e2ba59 JD |
685 | |
686 | /* Returns the current timestamp. */ | |
687 | int kernctl_get_current_timestamp(int fd, uint64_t *ts) | |
688 | { | |
5226f1bc JG |
689 | return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP, |
690 | ts); | |
d3e2ba59 | 691 | } |
fb83fe64 JD |
692 | |
693 | /* Returns the packet sequence number of the current sub-buffer. */ | |
694 | int kernctl_get_sequence_number(int fd, uint64_t *seq) | |
695 | { | |
5226f1bc | 696 | return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_GET_SEQ_NUM, seq); |
fb83fe64 | 697 | } |
000fa86f JD |
698 | |
699 | /* Returns the stream instance id. */ | |
700 | int kernctl_get_instance_id(int fd, uint64_t *id) | |
701 | { | |
5226f1bc | 702 | return LTTNG_IOCTL_CHECK(fd, LTTNG_RING_BUFFER_INSTANCE_ID, id); |
000fa86f | 703 | } |