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 | |
9074be22 SM |
25 | #define LTTNG_IOCTL_CHECK(fildes, request, ...) \ |
26 | ({ \ | |
27 | int _ioctl_ret = ioctl(fildes, request, ##__VA_ARGS__); \ | |
28 | assert(_ioctl_ret <= 0); \ | |
29 | !_ioctl_ret ? 0 : -errno; \ | |
30 | }) | |
5226f1bc | 31 | |
9074be22 SM |
32 | #define LTTNG_IOCTL_NO_CHECK(fildes, request, ...) \ |
33 | ({ \ | |
34 | int _ioctl_ret = ioctl(fildes, request, ##__VA_ARGS__); \ | |
35 | _ioctl_ret >= 0 ? _ioctl_ret : -errno; \ | |
36 | }) | |
a6bd6d9b | 37 | |
4dbc372b JD |
38 | /* |
39 | * This flag indicates which version of the kernel ABI to use. The old | |
40 | * ABI (namespace _old) does not support a 32-bit user-space when the | |
41 | * kernel is 64-bit. The old ABI is kept here for compatibility but is | |
42 | * deprecated and will be removed eventually. | |
43 | */ | |
2d6bae7e | 44 | static int lttng_kernel_abi_use_old_abi = -1; |
4dbc372b JD |
45 | |
46 | /* | |
47 | * Execute the new or old ioctl depending on the ABI version. | |
2d6bae7e | 48 | * If the ABI version is not determined yet (lttng_kernel_abi_use_old_abi = -1), |
4dbc372b JD |
49 | * this function tests if the new ABI is available and otherwise fallbacks |
50 | * on the old one. | |
51 | * This function takes the fd on which the ioctl must be executed and the old | |
52 | * and new request codes. | |
53 | * It returns the return value of the ioctl executed. | |
54 | */ | |
55 | static inline int compat_ioctl_no_arg(int fd, unsigned long oldname, | |
56 | unsigned long newname) | |
57 | { | |
58 | int ret; | |
59 | ||
2d6bae7e | 60 | if (lttng_kernel_abi_use_old_abi == -1) { |
5226f1bc | 61 | ret = LTTNG_IOCTL_NO_CHECK(fd, newname); |
4dbc372b | 62 | if (!ret) { |
2d6bae7e | 63 | lttng_kernel_abi_use_old_abi = 0; |
4dbc372b JD |
64 | goto end; |
65 | } | |
2d6bae7e | 66 | lttng_kernel_abi_use_old_abi = 1; |
4dbc372b | 67 | } |
2d6bae7e | 68 | if (lttng_kernel_abi_use_old_abi) { |
5226f1bc | 69 | ret = LTTNG_IOCTL_NO_CHECK(fd, oldname); |
4dbc372b | 70 | } else { |
5226f1bc | 71 | ret = LTTNG_IOCTL_NO_CHECK(fd, newname); |
4dbc372b JD |
72 | } |
73 | ||
74 | end: | |
75 | return ret; | |
76 | } | |
77 | ||
964ccb60 | 78 | int kernctl_create_session(int fd) |
d65106b1 | 79 | { |
2d6bae7e FD |
80 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_SESSION, |
81 | LTTNG_KERNEL_ABI_SESSION); | |
d65106b1 DG |
82 | } |
83 | ||
964ccb60 MD |
84 | /* open the metadata global channel */ |
85 | int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops) | |
f3ed775e | 86 | { |
2d6bae7e | 87 | struct lttng_kernel_abi_channel channel; |
4dbc372b | 88 | |
2d6bae7e FD |
89 | if (lttng_kernel_abi_use_old_abi) { |
90 | struct lttng_kernel_abi_old_channel old_channel; | |
10600be0 MD |
91 | |
92 | memset(&old_channel, 0, sizeof(old_channel)); | |
4dbc372b JD |
93 | old_channel.overwrite = chops->overwrite; |
94 | old_channel.subbuf_size = chops->subbuf_size; | |
95 | old_channel.num_subbuf = chops->num_subbuf; | |
96 | old_channel.switch_timer_interval = chops->switch_timer_interval; | |
97 | old_channel.read_timer_interval = chops->read_timer_interval; | |
98 | old_channel.output = chops->output; | |
f853c53a DG |
99 | |
100 | memset(old_channel.padding, 0, sizeof(old_channel.padding)); | |
101 | /* | |
102 | * The new channel padding is smaller than the old ABI so we use the | |
103 | * new ABI padding size for the memcpy. | |
104 | */ | |
105 | memcpy(old_channel.padding, chops->padding, sizeof(chops->padding)); | |
4dbc372b | 106 | |
2d6bae7e | 107 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_OLD_METADATA, |
5226f1bc | 108 | &old_channel); |
4dbc372b JD |
109 | } |
110 | ||
10600be0 | 111 | memset(&channel, 0, sizeof(channel)); |
4dbc372b JD |
112 | channel.overwrite = chops->overwrite; |
113 | channel.subbuf_size = chops->subbuf_size; | |
114 | channel.num_subbuf = chops->num_subbuf; | |
115 | channel.switch_timer_interval = chops->switch_timer_interval; | |
116 | channel.read_timer_interval = chops->read_timer_interval; | |
117 | channel.output = chops->output; | |
ea207e3b | 118 | memcpy(channel.padding, chops->padding, sizeof(chops->padding)); |
4dbc372b | 119 | |
2d6bae7e | 120 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_METADATA, &channel); |
f3ed775e DG |
121 | } |
122 | ||
123 | int kernctl_create_channel(int fd, struct lttng_channel_attr *chops) | |
16421f6e | 124 | { |
2d6bae7e | 125 | struct lttng_kernel_abi_channel channel; |
4dbc372b | 126 | |
c74101ef | 127 | memset(&channel, 0, sizeof(channel)); |
2d6bae7e FD |
128 | if (lttng_kernel_abi_use_old_abi) { |
129 | struct lttng_kernel_abi_old_channel old_channel; | |
4dbc372b JD |
130 | |
131 | old_channel.overwrite = chops->overwrite; | |
132 | old_channel.subbuf_size = chops->subbuf_size; | |
133 | old_channel.num_subbuf = chops->num_subbuf; | |
134 | old_channel.switch_timer_interval = chops->switch_timer_interval; | |
135 | old_channel.read_timer_interval = chops->read_timer_interval; | |
136 | old_channel.output = chops->output; | |
f853c53a DG |
137 | |
138 | memset(old_channel.padding, 0, sizeof(old_channel.padding)); | |
139 | /* | |
140 | * The new channel padding is smaller than the old ABI so we use the | |
141 | * new ABI padding size for the memcpy. | |
142 | */ | |
143 | memcpy(old_channel.padding, chops->padding, sizeof(chops->padding)); | |
4dbc372b | 144 | |
2d6bae7e | 145 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_OLD_CHANNEL, |
5226f1bc | 146 | &old_channel); |
4dbc372b JD |
147 | } |
148 | ||
149 | channel.overwrite = chops->overwrite; | |
150 | channel.subbuf_size = chops->subbuf_size; | |
151 | channel.num_subbuf = chops->num_subbuf; | |
152 | channel.switch_timer_interval = chops->switch_timer_interval; | |
153 | channel.read_timer_interval = chops->read_timer_interval; | |
154 | channel.output = chops->output; | |
ea207e3b | 155 | memcpy(channel.padding, chops->padding, sizeof(chops->padding)); |
4dbc372b | 156 | |
2d6bae7e | 157 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_CHANNEL, &channel); |
16421f6e DG |
158 | } |
159 | ||
46820c8b MD |
160 | int kernctl_syscall_mask(int fd, char **syscall_mask, uint32_t *nr_bits) |
161 | { | |
2d6bae7e | 162 | struct lttng_kernel_abi_syscall_mask kmask_len, *kmask = NULL; |
46820c8b MD |
163 | size_t array_alloc_len; |
164 | char *new_mask; | |
165 | int ret = 0; | |
166 | ||
167 | if (!syscall_mask) { | |
168 | ret = -1; | |
169 | goto end; | |
170 | } | |
171 | ||
172 | if (!nr_bits) { | |
173 | ret = -1; | |
174 | goto end; | |
175 | } | |
176 | ||
177 | kmask_len.len = 0; | |
2d6bae7e | 178 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SYSCALL_MASK, &kmask_len); |
46820c8b MD |
179 | if (ret) { |
180 | goto end; | |
181 | } | |
182 | ||
183 | array_alloc_len = ALIGN(kmask_len.len, 8) >> 3; | |
834978fd | 184 | |
46820c8b MD |
185 | kmask = zmalloc(sizeof(*kmask) + array_alloc_len); |
186 | if (!kmask) { | |
187 | ret = -1; | |
188 | goto end; | |
189 | } | |
190 | ||
191 | kmask->len = kmask_len.len; | |
2d6bae7e | 192 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SYSCALL_MASK, kmask); |
46820c8b MD |
193 | if (ret) { |
194 | goto end; | |
195 | } | |
196 | ||
834978fd | 197 | new_mask = realloc(*syscall_mask, array_alloc_len); |
46820c8b MD |
198 | if (!new_mask) { |
199 | ret = -1; | |
200 | goto end; | |
201 | } | |
202 | memcpy(new_mask, kmask->mask, array_alloc_len); | |
203 | *syscall_mask = new_mask; | |
204 | *nr_bits = kmask->len; | |
205 | ||
206 | end: | |
207 | free(kmask); | |
208 | return ret; | |
209 | } | |
210 | ||
ccf10263 MD |
211 | int kernctl_track_pid(int fd, int pid) |
212 | { | |
c7a7f1e8 FD |
213 | int ret = LTTNG_IOCTL_CHECK( |
214 | fd, LTTNG_KERNEL_ABI_SESSION_TRACK_PID, pid); | |
215 | ||
216 | if (ret == -ENOSYS) { | |
217 | ret = LTTNG_IOCTL_CHECK(fd, | |
218 | LTTNG_KERNEL_ABI_OLD_SESSION_TRACK_PID, pid); | |
219 | } | |
220 | ||
221 | return ret; | |
ccf10263 MD |
222 | } |
223 | ||
224 | int kernctl_untrack_pid(int fd, int pid) | |
225 | { | |
c7a7f1e8 FD |
226 | int ret = LTTNG_IOCTL_CHECK( |
227 | fd, LTTNG_KERNEL_ABI_SESSION_UNTRACK_PID, pid); | |
228 | ||
229 | if (ret == -ENOSYS) { | |
230 | ret = LTTNG_IOCTL_CHECK(fd, | |
231 | LTTNG_KERNEL_ABI_OLD_SESSION_UNTRACK_PID, pid); | |
232 | } | |
233 | ||
234 | return ret; | |
ccf10263 MD |
235 | } |
236 | ||
a5dfbb9d MD |
237 | int kernctl_list_tracker_pids(int fd) |
238 | { | |
2d6bae7e | 239 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_LIST_TRACKER_PIDS); |
a5dfbb9d MD |
240 | } |
241 | ||
2d6bae7e | 242 | static enum lttng_kernel_abi_tracker_type get_kernel_tracker_type( |
159b042f | 243 | enum lttng_process_attr process_attr) |
d01c0e56 | 244 | { |
159b042f JG |
245 | switch (process_attr) { |
246 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
2d6bae7e | 247 | return LTTNG_KERNEL_ABI_TRACKER_PID; |
159b042f | 248 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
2d6bae7e | 249 | return LTTNG_KERNEL_ABI_TRACKER_VPID; |
159b042f | 250 | case LTTNG_PROCESS_ATTR_USER_ID: |
2d6bae7e | 251 | return LTTNG_KERNEL_ABI_TRACKER_UID; |
159b042f | 252 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
2d6bae7e | 253 | return LTTNG_KERNEL_ABI_TRACKER_VUID; |
159b042f | 254 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
2d6bae7e | 255 | return LTTNG_KERNEL_ABI_TRACKER_GID; |
159b042f | 256 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
2d6bae7e | 257 | return LTTNG_KERNEL_ABI_TRACKER_VGID; |
d01c0e56 | 258 | default: |
2d6bae7e | 259 | return LTTNG_KERNEL_ABI_TRACKER_UNKNOWN; |
d01c0e56 MD |
260 | } |
261 | } | |
262 | ||
159b042f | 263 | int kernctl_track_id(int fd, enum lttng_process_attr process_attr, int id) |
d01c0e56 | 264 | { |
2d6bae7e | 265 | struct lttng_kernel_abi_tracker_args args; |
c7a7f1e8 | 266 | int ret; |
d01c0e56 MD |
267 | |
268 | args.id = id; | |
159b042f | 269 | args.type = get_kernel_tracker_type(process_attr); |
2d6bae7e | 270 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
271 | errno = EINVAL; |
272 | return -1; | |
273 | } | |
c7a7f1e8 FD |
274 | |
275 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_TRACK_ID, &args); | |
276 | if (ret == -ENOSYS) { | |
277 | ret = LTTNG_IOCTL_CHECK(fd, | |
278 | LTTNG_KERNEL_ABI_OLD_SESSION_TRACK_ID, &args); | |
279 | } | |
280 | ||
281 | return ret; | |
d01c0e56 MD |
282 | } |
283 | ||
159b042f | 284 | int kernctl_untrack_id(int fd, enum lttng_process_attr process_attr, int id) |
d01c0e56 | 285 | { |
2d6bae7e | 286 | struct lttng_kernel_abi_tracker_args args; |
c7a7f1e8 | 287 | int ret; |
d01c0e56 MD |
288 | |
289 | args.id = id; | |
159b042f | 290 | args.type = get_kernel_tracker_type(process_attr); |
2d6bae7e | 291 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
292 | errno = EINVAL; |
293 | return -1; | |
294 | } | |
c7a7f1e8 FD |
295 | |
296 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_UNTRACK_ID, &args); | |
297 | if (ret == -ENOSYS) { | |
298 | ret = LTTNG_IOCTL_CHECK(fd, | |
299 | LTTNG_KERNEL_ABI_OLD_SESSION_UNTRACK_ID, &args); | |
300 | } | |
301 | ||
302 | return ret; | |
d01c0e56 MD |
303 | } |
304 | ||
159b042f | 305 | int kernctl_list_tracker_ids(int fd, enum lttng_process_attr process_attr) |
d01c0e56 | 306 | { |
2d6bae7e | 307 | struct lttng_kernel_abi_tracker_args args; |
c7a7f1e8 | 308 | int ret; |
d01c0e56 MD |
309 | |
310 | args.id = -1; | |
159b042f | 311 | args.type = get_kernel_tracker_type(process_attr); |
2d6bae7e | 312 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
313 | errno = EINVAL; |
314 | return -1; | |
315 | } | |
c7a7f1e8 FD |
316 | |
317 | ret = LTTNG_IOCTL_NO_CHECK( | |
2d6bae7e | 318 | fd, LTTNG_KERNEL_ABI_SESSION_LIST_TRACKER_IDS, &args); |
c7a7f1e8 FD |
319 | if (ret == -ENOSYS) { |
320 | ret = LTTNG_IOCTL_NO_CHECK(fd, | |
321 | LTTNG_KERNEL_ABI_OLD_SESSION_LIST_TRACKER_IDS, | |
322 | &args); | |
323 | } | |
324 | ||
325 | return ret; | |
d01c0e56 MD |
326 | } |
327 | ||
eded6438 | 328 | int kernctl_session_regenerate_metadata(int fd) |
93ec662e | 329 | { |
2d6bae7e | 330 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_METADATA_REGEN); |
93ec662e JD |
331 | } |
332 | ||
c2561365 JD |
333 | int kernctl_session_regenerate_statedump(int fd) |
334 | { | |
2d6bae7e | 335 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_STATEDUMP); |
c2561365 JD |
336 | } |
337 | ||
8ff4109e JR |
338 | int kernctl_session_set_name(int fd, const char *name) |
339 | { | |
340 | int ret; | |
2d6bae7e | 341 | struct lttng_kernel_abi_session_name session_name; |
8ff4109e JR |
342 | |
343 | ret = lttng_strncpy(session_name.name, name, sizeof(session_name.name)); | |
344 | if (ret) { | |
345 | goto end; | |
346 | } | |
347 | ||
348 | ret = LTTNG_IOCTL_CHECK( | |
2d6bae7e | 349 | fd, LTTNG_KERNEL_ABI_SESSION_SET_NAME, &session_name); |
c7a7f1e8 FD |
350 | if (ret == -ENOSYS) { |
351 | ret = LTTNG_IOCTL_CHECK(fd, | |
352 | LTTNG_KERNEL_ABI_OLD_SESSION_SET_NAME, | |
353 | &session_name); | |
354 | } | |
355 | ||
8ff4109e JR |
356 | end: |
357 | return ret; | |
358 | } | |
359 | ||
e04b2181 JR |
360 | int kernctl_session_set_creation_time(int fd, time_t time) |
361 | { | |
362 | int ret; | |
2d6bae7e | 363 | struct lttng_kernel_abi_session_creation_time creation_time; |
e04b2181 JR |
364 | |
365 | ret = time_to_iso8601_str(time, creation_time.iso8601, | |
366 | sizeof(creation_time.iso8601)); | |
367 | if (ret) { | |
368 | goto end; | |
369 | } | |
370 | ||
2d6bae7e | 371 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_SET_CREATION_TIME, |
e04b2181 | 372 | &creation_time); |
c7a7f1e8 FD |
373 | if (ret == -ENOSYS) { |
374 | ret = LTTNG_IOCTL_CHECK(fd, | |
375 | LTTNG_KERNEL_ABI_OLD_SESSION_SET_CREATION_TIME, | |
376 | &creation_time); | |
377 | } | |
378 | ||
e04b2181 JR |
379 | end: |
380 | return ret; | |
381 | } | |
382 | ||
964ccb60 | 383 | int kernctl_create_stream(int fd) |
16421f6e | 384 | { |
2d6bae7e FD |
385 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_STREAM, |
386 | LTTNG_KERNEL_ABI_STREAM); | |
16421f6e DG |
387 | } |
388 | ||
2d6bae7e | 389 | int kernctl_create_event(int fd, struct lttng_kernel_abi_event *ev) |
16421f6e | 390 | { |
2d6bae7e FD |
391 | if (lttng_kernel_abi_use_old_abi) { |
392 | struct lttng_kernel_abi_old_event old_event; | |
4dbc372b | 393 | |
10600be0 | 394 | memset(&old_event, 0, sizeof(old_event)); |
4dbc372b JD |
395 | memcpy(old_event.name, ev->name, sizeof(old_event.name)); |
396 | old_event.instrumentation = ev->instrumentation; | |
397 | switch (ev->instrumentation) { | |
2d6bae7e | 398 | case LTTNG_KERNEL_ABI_KPROBE: |
4dbc372b JD |
399 | old_event.u.kprobe.addr = ev->u.kprobe.addr; |
400 | old_event.u.kprobe.offset = ev->u.kprobe.offset; | |
401 | memcpy(old_event.u.kprobe.symbol_name, | |
402 | ev->u.kprobe.symbol_name, | |
403 | sizeof(old_event.u.kprobe.symbol_name)); | |
404 | break; | |
2d6bae7e | 405 | case LTTNG_KERNEL_ABI_KRETPROBE: |
4dbc372b JD |
406 | old_event.u.kretprobe.addr = ev->u.kretprobe.addr; |
407 | old_event.u.kretprobe.offset = ev->u.kretprobe.offset; | |
408 | memcpy(old_event.u.kretprobe.symbol_name, | |
409 | ev->u.kretprobe.symbol_name, | |
410 | sizeof(old_event.u.kretprobe.symbol_name)); | |
411 | break; | |
2d6bae7e | 412 | case LTTNG_KERNEL_ABI_FUNCTION: |
4dbc372b JD |
413 | memcpy(old_event.u.ftrace.symbol_name, |
414 | ev->u.ftrace.symbol_name, | |
415 | sizeof(old_event.u.ftrace.symbol_name)); | |
416 | break; | |
417 | default: | |
418 | break; | |
419 | } | |
420 | ||
2d6bae7e | 421 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_OLD_EVENT, |
5226f1bc | 422 | &old_event); |
4dbc372b | 423 | } |
2d6bae7e | 424 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_EVENT, ev); |
16421f6e DG |
425 | } |
426 | ||
2d6bae7e | 427 | int kernctl_add_context(int fd, struct lttng_kernel_abi_context *ctx) |
16421f6e | 428 | { |
2d6bae7e FD |
429 | if (lttng_kernel_abi_use_old_abi) { |
430 | struct lttng_kernel_abi_old_context old_ctx; | |
4dbc372b | 431 | |
10600be0 | 432 | memset(&old_ctx, 0, sizeof(old_ctx)); |
4dbc372b JD |
433 | old_ctx.ctx = ctx->ctx; |
434 | /* only type that uses the union */ | |
2d6bae7e | 435 | if (ctx->ctx == LTTNG_KERNEL_ABI_CONTEXT_PERF_CPU_COUNTER) { |
4dbc372b JD |
436 | old_ctx.u.perf_counter.type = |
437 | ctx->u.perf_counter.type; | |
438 | old_ctx.u.perf_counter.config = | |
439 | ctx->u.perf_counter.config; | |
440 | memcpy(old_ctx.u.perf_counter.name, | |
441 | ctx->u.perf_counter.name, | |
442 | sizeof(old_ctx.u.perf_counter.name)); | |
443 | } | |
2d6bae7e FD |
444 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_CONTEXT, |
445 | &old_ctx); | |
4dbc372b | 446 | } |
2d6bae7e | 447 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_CONTEXT, ctx); |
16421f6e DG |
448 | } |
449 | ||
964ccb60 | 450 | |
5226f1bc | 451 | /* Enable event, channel and session LTTNG_IOCTL_CHECK */ |
f3ed775e DG |
452 | int kernctl_enable(int fd) |
453 | { | |
2d6bae7e FD |
454 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_ENABLE, |
455 | LTTNG_KERNEL_ABI_ENABLE); | |
f3ed775e DG |
456 | } |
457 | ||
5226f1bc | 458 | /* Disable event, channel and session LTTNG_IOCTL_CHECK */ |
f3ed775e DG |
459 | int kernctl_disable(int fd) |
460 | { | |
2d6bae7e FD |
461 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_DISABLE, |
462 | LTTNG_KERNEL_ABI_DISABLE); | |
f3ed775e DG |
463 | } |
464 | ||
964ccb60 | 465 | int kernctl_start_session(int fd) |
16421f6e | 466 | { |
2d6bae7e FD |
467 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_SESSION_START, |
468 | LTTNG_KERNEL_ABI_SESSION_START); | |
964ccb60 MD |
469 | } |
470 | ||
471 | int kernctl_stop_session(int fd) | |
472 | { | |
2d6bae7e FD |
473 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_SESSION_STOP, |
474 | LTTNG_KERNEL_ABI_SESSION_STOP); | |
16421f6e DG |
475 | } |
476 | ||
cfb1c9bc JR |
477 | int kernctl_create_event_notifier_group(int fd) |
478 | { | |
479 | return LTTNG_IOCTL_NO_CHECK(fd, | |
2d6bae7e | 480 | LTTNG_KERNEL_ABI_EVENT_NOTIFIER_GROUP_CREATE); |
cfb1c9bc JR |
481 | } |
482 | ||
483 | int kernctl_create_event_notifier_group_notification_fd(int group_fd) | |
484 | { | |
485 | return LTTNG_IOCTL_NO_CHECK(group_fd, | |
2d6bae7e | 486 | LTTNG_KERNEL_ABI_EVENT_NOTIFIER_GROUP_NOTIFICATION_FD); |
cfb1c9bc JR |
487 | } |
488 | ||
90aa04a1 | 489 | int kernctl_create_event_notifier_group_error_counter(int group_fd, |
2d6bae7e | 490 | const struct lttng_kernel_abi_counter_conf *error_counter_conf) |
90aa04a1 | 491 | { |
2d6bae7e | 492 | return LTTNG_IOCTL_NO_CHECK(group_fd, LTTNG_KERNEL_ABI_COUNTER, |
90aa04a1 FD |
493 | error_counter_conf); |
494 | } | |
495 | ||
496 | int kernctl_counter_get_aggregate_value(int counter_fd, | |
2d6bae7e | 497 | struct lttng_kernel_abi_counter_aggregate *value) |
90aa04a1 | 498 | { |
2d6bae7e | 499 | return LTTNG_IOCTL_NO_CHECK(counter_fd, LTTNG_KERNEL_ABI_COUNTER_AGGREGATE, |
90aa04a1 FD |
500 | value); |
501 | } | |
502 | ||
503 | int kernctl_counter_clear(int counter_fd, | |
2d6bae7e | 504 | struct lttng_kernel_abi_counter_clear *clear) |
90aa04a1 | 505 | { |
2d6bae7e | 506 | return LTTNG_IOCTL_NO_CHECK(counter_fd, LTTNG_KERNEL_ABI_COUNTER_CLEAR, |
90aa04a1 FD |
507 | clear); |
508 | } | |
509 | ||
cfb1c9bc | 510 | int kernctl_create_event_notifier(int group_fd, |
2d6bae7e | 511 | const struct lttng_kernel_abi_event_notifier *event_notifier) |
cfb1c9bc JR |
512 | { |
513 | return LTTNG_IOCTL_NO_CHECK(group_fd, | |
2d6bae7e | 514 | LTTNG_KERNEL_ABI_EVENT_NOTIFIER_CREATE, event_notifier); |
cfb1c9bc JR |
515 | } |
516 | ||
bbd6675c JR |
517 | int kernctl_capture(int fd, const struct lttng_bytecode *capture) |
518 | { | |
519 | int ret; | |
2d6bae7e | 520 | struct lttng_kernel_abi_capture_bytecode *kb; |
bbd6675c JR |
521 | |
522 | /* Translate bytecode to kernel bytecode. */ | |
523 | kb = zmalloc(sizeof(*kb) + capture->len); | |
524 | if (!kb) { | |
525 | ret = -ENOMEM; | |
526 | goto end; | |
527 | } | |
528 | ||
529 | kb->len = capture->len; | |
530 | kb->reloc_offset = capture->reloc_table_offset; | |
531 | kb->seqnum = capture->seqnum; | |
532 | memcpy(kb->data, capture->data, capture->len); | |
2d6bae7e | 533 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_CAPTURE, kb); |
bbd6675c JR |
534 | free(kb); |
535 | end: | |
536 | return ret; | |
537 | } | |
538 | ||
2b00d462 | 539 | int kernctl_filter(int fd, const struct lttng_bytecode *filter) |
00a62084 | 540 | { |
2d6bae7e | 541 | struct lttng_kernel_abi_filter_bytecode *kb; |
00a62084 MD |
542 | uint32_t len; |
543 | int ret; | |
544 | ||
545 | /* Translate bytecode to kernel bytecode */ | |
546 | kb = zmalloc(sizeof(*kb) + filter->len); | |
547 | if (!kb) | |
548 | return -ENOMEM; | |
549 | kb->len = len = filter->len; | |
550 | kb->reloc_offset = filter->reloc_table_offset; | |
551 | kb->seqnum = filter->seqnum; | |
552 | memcpy(kb->data, filter->data, len); | |
2d6bae7e | 553 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_FILTER, kb); |
00a62084 MD |
554 | free(kb); |
555 | return ret; | |
556 | } | |
557 | ||
2d6bae7e | 558 | int kernctl_add_callsite(int fd, struct lttng_kernel_abi_event_callsite *callsite) |
1ab8c2ad | 559 | { |
2d6bae7e | 560 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_ADD_CALLSITE, callsite); |
1ab8c2ad FD |
561 | } |
562 | ||
964ccb60 MD |
563 | int kernctl_tracepoint_list(int fd) |
564 | { | |
2d6bae7e FD |
565 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_TRACEPOINT_LIST, |
566 | LTTNG_KERNEL_ABI_TRACEPOINT_LIST); | |
964ccb60 MD |
567 | } |
568 | ||
d02666a9 MD |
569 | int kernctl_syscall_list(int fd) |
570 | { | |
2d6bae7e | 571 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_SYSCALL_LIST); |
d02666a9 MD |
572 | } |
573 | ||
2d6bae7e | 574 | int kernctl_tracer_version(int fd, struct lttng_kernel_abi_tracer_version *v) |
964ccb60 | 575 | { |
4dbc372b JD |
576 | int ret; |
577 | ||
2d6bae7e FD |
578 | if (lttng_kernel_abi_use_old_abi == -1) { |
579 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_VERSION, v); | |
4dbc372b | 580 | if (!ret) { |
2d6bae7e | 581 | lttng_kernel_abi_use_old_abi = 0; |
4dbc372b JD |
582 | goto end; |
583 | } | |
2d6bae7e | 584 | lttng_kernel_abi_use_old_abi = 1; |
4dbc372b | 585 | } |
2d6bae7e FD |
586 | if (lttng_kernel_abi_use_old_abi) { |
587 | struct lttng_kernel_abi_old_tracer_version old_v; | |
4dbc372b | 588 | |
2d6bae7e | 589 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_TRACER_VERSION, &old_v); |
4dbc372b JD |
590 | if (ret) { |
591 | goto end; | |
592 | } | |
593 | v->major = old_v.major; | |
594 | v->minor = old_v.minor; | |
595 | v->patchlevel = old_v.patchlevel; | |
596 | } else { | |
2d6bae7e | 597 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_VERSION, v); |
4dbc372b JD |
598 | } |
599 | ||
600 | end: | |
601 | return ret; | |
964ccb60 MD |
602 | } |
603 | ||
c052142c | 604 | int kernctl_tracer_abi_version(int fd, |
2d6bae7e | 605 | struct lttng_kernel_abi_tracer_abi_version *v) |
c052142c | 606 | { |
2d6bae7e | 607 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_ABI_VERSION, v); |
c052142c MD |
608 | } |
609 | ||
964ccb60 MD |
610 | int kernctl_wait_quiescent(int fd) |
611 | { | |
2d6bae7e FD |
612 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_WAIT_QUIESCENT, |
613 | LTTNG_KERNEL_ABI_WAIT_QUIESCENT); | |
964ccb60 MD |
614 | } |
615 | ||
964ccb60 MD |
616 | int kernctl_buffer_flush(int fd) |
617 | { | |
2d6bae7e | 618 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_FLUSH); |
964ccb60 MD |
619 | } |
620 | ||
f22dd891 MD |
621 | int kernctl_buffer_flush_empty(int fd) |
622 | { | |
2d6bae7e | 623 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_FLUSH_EMPTY); |
f22dd891 MD |
624 | } |
625 | ||
99930a9d JR |
626 | int kernctl_buffer_clear(int fd) |
627 | { | |
2d6bae7e | 628 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_CLEAR); |
99930a9d JR |
629 | } |
630 | ||
41dc93d9 JG |
631 | int kernctl_get_next_subbuf_metadata_check(int fd, bool *consistent) |
632 | { | |
633 | return LTTNG_IOCTL_NO_CHECK(fd, | |
2d6bae7e | 634 | LTTNG_KERNEL_ABI_RING_BUFFER_GET_NEXT_SUBBUF_METADATA_CHECK, |
41dc93d9 JG |
635 | consistent); |
636 | } | |
637 | ||
93ec662e JD |
638 | /* returns the version of the metadata. */ |
639 | int kernctl_get_metadata_version(int fd, uint64_t *version) | |
640 | { | |
2d6bae7e FD |
641 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_METADATA_VERSION, |
642 | version); | |
93ec662e JD |
643 | } |
644 | ||
8024cc8c JD |
645 | int kernctl_metadata_cache_dump(int fd) |
646 | { | |
2d6bae7e | 647 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_METADATA_CACHE_DUMP); |
8024cc8c | 648 | } |
964ccb60 MD |
649 | |
650 | /* Buffer operations */ | |
651 | ||
652 | /* For mmap mode, readable without "get" operation */ | |
653 | ||
16421f6e DG |
654 | /* returns the length to mmap. */ |
655 | int kernctl_get_mmap_len(int fd, unsigned long *len) | |
656 | { | |
2d6bae7e FD |
657 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MMAP_LEN, |
658 | len); | |
16421f6e DG |
659 | } |
660 | ||
964ccb60 MD |
661 | /* returns the maximum size for sub-buffers. */ |
662 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len) | |
663 | { | |
2d6bae7e FD |
664 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MAX_SUBBUF_SIZE, |
665 | len); | |
964ccb60 MD |
666 | } |
667 | ||
668 | /* | |
669 | * For mmap mode, operate on the current packet (between get/put or | |
670 | * get_next/put_next). | |
671 | */ | |
672 | ||
16421f6e DG |
673 | /* returns the offset of the subbuffer belonging to the mmap reader. */ |
674 | int kernctl_get_mmap_read_offset(int fd, unsigned long *off) | |
675 | { | |
2d6bae7e FD |
676 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MMAP_READ_OFFSET, |
677 | off); | |
16421f6e DG |
678 | } |
679 | ||
964ccb60 MD |
680 | /* returns the size of the current sub-buffer, without padding (for mmap). */ |
681 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
16421f6e | 682 | { |
2d6bae7e FD |
683 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SUBBUF_SIZE, |
684 | len); | |
16421f6e DG |
685 | } |
686 | ||
687 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
688 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len) | |
689 | { | |
2d6bae7e FD |
690 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_PADDED_SUBBUF_SIZE, |
691 | len); | |
16421f6e DG |
692 | } |
693 | ||
964ccb60 MD |
694 | /* Get exclusive read access to the next sub-buffer that can be read. */ |
695 | int kernctl_get_next_subbuf(int fd) | |
16421f6e | 696 | { |
2d6bae7e | 697 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_NEXT_SUBBUF); |
16421f6e DG |
698 | } |
699 | ||
d4a1283e | 700 | |
16421f6e DG |
701 | /* Release exclusive sub-buffer access, move consumer forward. */ |
702 | int kernctl_put_next_subbuf(int fd) | |
703 | { | |
2d6bae7e | 704 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_PUT_NEXT_SUBBUF); |
16421f6e DG |
705 | } |
706 | ||
964ccb60 | 707 | /* snapshot */ |
16421f6e DG |
708 | |
709 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
710 | int kernctl_snapshot(int fd) | |
711 | { | |
2d6bae7e | 712 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT); |
16421f6e DG |
713 | } |
714 | ||
b007ec59 JG |
715 | /* |
716 | * Get a snapshot of the current ring buffer producer and consumer positions, | |
717 | * regardless of whether or not the two positions are contained within the | |
718 | * same sub-buffer. | |
719 | */ | |
720 | int kernctl_snapshot_sample_positions(int fd) | |
721 | { | |
2d6bae7e | 722 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS); |
b007ec59 JG |
723 | } |
724 | ||
16421f6e DG |
725 | /* Get the consumer position (iteration start) */ |
726 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos) | |
727 | { | |
2d6bae7e FD |
728 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_GET_CONSUMED, |
729 | pos); | |
16421f6e DG |
730 | } |
731 | ||
732 | /* Get the producer position (iteration end) */ | |
733 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos) | |
734 | { | |
2d6bae7e FD |
735 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_GET_PRODUCED, |
736 | pos); | |
16421f6e DG |
737 | } |
738 | ||
964ccb60 MD |
739 | /* Get exclusive read access to the specified sub-buffer position */ |
740 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
f3ed775e | 741 | { |
2d6bae7e FD |
742 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SUBBUF, |
743 | len); | |
f3ed775e | 744 | } |
d0254c7c | 745 | |
964ccb60 MD |
746 | /* Release exclusive sub-buffer access */ |
747 | int kernctl_put_subbuf(int fd) | |
d0254c7c | 748 | { |
2d6bae7e | 749 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_PUT_SUBBUF); |
d0254c7c | 750 | } |
309167d2 JD |
751 | |
752 | /* Returns the timestamp begin of the current sub-buffer. */ | |
753 | int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin) | |
754 | { | |
2d6bae7e | 755 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_TIMESTAMP_BEGIN, |
a6bd6d9b | 756 | timestamp_begin); |
309167d2 JD |
757 | } |
758 | ||
759 | /* Returns the timestamp end of the current sub-buffer. */ | |
760 | int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end) | |
761 | { | |
2d6bae7e | 762 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_TIMESTAMP_END, |
a6bd6d9b | 763 | timestamp_end); |
309167d2 JD |
764 | } |
765 | ||
766 | /* Returns the number of discarded events in the current sub-buffer. */ | |
767 | int kernctl_get_events_discarded(int fd, uint64_t *events_discarded) | |
768 | { | |
2d6bae7e | 769 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_EVENTS_DISCARDED, |
a6bd6d9b | 770 | events_discarded); |
309167d2 JD |
771 | } |
772 | ||
773 | /* Returns the content size in the current sub-buffer. */ | |
774 | int kernctl_get_content_size(int fd, uint64_t *content_size) | |
775 | { | |
2d6bae7e | 776 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_CONTENT_SIZE, |
a6bd6d9b | 777 | content_size); |
309167d2 JD |
778 | } |
779 | ||
780 | /* Returns the packet size in the current sub-buffer. */ | |
781 | int kernctl_get_packet_size(int fd, uint64_t *packet_size) | |
782 | { | |
2d6bae7e | 783 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_PACKET_SIZE, |
5226f1bc | 784 | packet_size); |
309167d2 JD |
785 | } |
786 | ||
787 | /* Returns the stream id of the current sub-buffer. */ | |
788 | int kernctl_get_stream_id(int fd, uint64_t *stream_id) | |
789 | { | |
2d6bae7e | 790 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_STREAM_ID, |
5226f1bc | 791 | stream_id); |
309167d2 | 792 | } |
d3e2ba59 JD |
793 | |
794 | /* Returns the current timestamp. */ | |
795 | int kernctl_get_current_timestamp(int fd, uint64_t *ts) | |
796 | { | |
2d6bae7e | 797 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_CURRENT_TIMESTAMP, |
5226f1bc | 798 | ts); |
d3e2ba59 | 799 | } |
fb83fe64 JD |
800 | |
801 | /* Returns the packet sequence number of the current sub-buffer. */ | |
802 | int kernctl_get_sequence_number(int fd, uint64_t *seq) | |
803 | { | |
2d6bae7e FD |
804 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SEQ_NUM, |
805 | seq); | |
fb83fe64 | 806 | } |
000fa86f JD |
807 | |
808 | /* Returns the stream instance id. */ | |
809 | int kernctl_get_instance_id(int fd, uint64_t *id) | |
810 | { | |
2d6bae7e FD |
811 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_INSTANCE_ID, |
812 | id); | |
000fa86f | 813 | } |