Commit | Line | Data |
---|---|---|
ee0326c0 | 1 | /* |
21cf9b6b | 2 | * Copyright (C) 2011 EfficiOS Inc. |
ab5be9fa MJ |
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 | 18 | #include <stdarg.h> |
e04b2181 | 19 | #include <common/time.h> |
16421f6e | 20 | |
10a8a223 | 21 | #include "kernel-ctl.h" |
16421f6e | 22 | #include "kernel-ioctl.h" |
16421f6e | 23 | |
9074be22 SM |
24 | #define LTTNG_IOCTL_CHECK(fildes, request, ...) \ |
25 | ({ \ | |
26 | int _ioctl_ret = ioctl(fildes, request, ##__VA_ARGS__); \ | |
a0377dfe | 27 | LTTNG_ASSERT(_ioctl_ret <= 0); \ |
9074be22 SM |
28 | !_ioctl_ret ? 0 : -errno; \ |
29 | }) | |
5226f1bc | 30 | |
9074be22 SM |
31 | #define LTTNG_IOCTL_NO_CHECK(fildes, request, ...) \ |
32 | ({ \ | |
33 | int _ioctl_ret = ioctl(fildes, request, ##__VA_ARGS__); \ | |
34 | _ioctl_ret >= 0 ? _ioctl_ret : -errno; \ | |
35 | }) | |
a6bd6d9b | 36 | |
4dbc372b JD |
37 | /* |
38 | * This flag indicates which version of the kernel ABI to use. The old | |
39 | * ABI (namespace _old) does not support a 32-bit user-space when the | |
40 | * kernel is 64-bit. The old ABI is kept here for compatibility but is | |
41 | * deprecated and will be removed eventually. | |
42 | */ | |
b8e2fb80 | 43 | static int lttng_kernel_abi_use_old_abi = -1; |
4dbc372b JD |
44 | |
45 | /* | |
46 | * Execute the new or old ioctl depending on the ABI version. | |
b8e2fb80 | 47 | * If the ABI version is not determined yet (lttng_kernel_abi_use_old_abi = -1), |
4dbc372b JD |
48 | * this function tests if the new ABI is available and otherwise fallbacks |
49 | * on the old one. | |
50 | * This function takes the fd on which the ioctl must be executed and the old | |
51 | * and new request codes. | |
52 | * It returns the return value of the ioctl executed. | |
53 | */ | |
54 | static inline int compat_ioctl_no_arg(int fd, unsigned long oldname, | |
55 | unsigned long newname) | |
56 | { | |
57 | int ret; | |
58 | ||
b8e2fb80 | 59 | if (lttng_kernel_abi_use_old_abi == -1) { |
5226f1bc | 60 | ret = LTTNG_IOCTL_NO_CHECK(fd, newname); |
4dbc372b | 61 | if (!ret) { |
b8e2fb80 | 62 | lttng_kernel_abi_use_old_abi = 0; |
4dbc372b JD |
63 | goto end; |
64 | } | |
b8e2fb80 | 65 | lttng_kernel_abi_use_old_abi = 1; |
4dbc372b | 66 | } |
b8e2fb80 | 67 | if (lttng_kernel_abi_use_old_abi) { |
5226f1bc | 68 | ret = LTTNG_IOCTL_NO_CHECK(fd, oldname); |
4dbc372b | 69 | } else { |
5226f1bc | 70 | ret = LTTNG_IOCTL_NO_CHECK(fd, newname); |
4dbc372b JD |
71 | } |
72 | ||
73 | end: | |
74 | return ret; | |
75 | } | |
76 | ||
964ccb60 | 77 | int kernctl_create_session(int fd) |
d65106b1 | 78 | { |
b8e2fb80 FD |
79 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_SESSION, |
80 | LTTNG_KERNEL_ABI_SESSION); | |
d65106b1 DG |
81 | } |
82 | ||
964ccb60 MD |
83 | /* open the metadata global channel */ |
84 | int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops) | |
f3ed775e | 85 | { |
b8e2fb80 | 86 | struct lttng_kernel_abi_channel channel; |
4dbc372b | 87 | |
b8e2fb80 FD |
88 | if (lttng_kernel_abi_use_old_abi) { |
89 | struct lttng_kernel_abi_old_channel old_channel; | |
10600be0 MD |
90 | |
91 | memset(&old_channel, 0, sizeof(old_channel)); | |
4dbc372b JD |
92 | old_channel.overwrite = chops->overwrite; |
93 | old_channel.subbuf_size = chops->subbuf_size; | |
94 | old_channel.num_subbuf = chops->num_subbuf; | |
95 | old_channel.switch_timer_interval = chops->switch_timer_interval; | |
96 | old_channel.read_timer_interval = chops->read_timer_interval; | |
97 | old_channel.output = chops->output; | |
f853c53a DG |
98 | |
99 | memset(old_channel.padding, 0, sizeof(old_channel.padding)); | |
100 | /* | |
101 | * The new channel padding is smaller than the old ABI so we use the | |
102 | * new ABI padding size for the memcpy. | |
103 | */ | |
104 | memcpy(old_channel.padding, chops->padding, sizeof(chops->padding)); | |
4dbc372b | 105 | |
b8e2fb80 | 106 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_OLD_METADATA, |
5226f1bc | 107 | &old_channel); |
4dbc372b JD |
108 | } |
109 | ||
10600be0 | 110 | memset(&channel, 0, sizeof(channel)); |
4dbc372b JD |
111 | channel.overwrite = chops->overwrite; |
112 | channel.subbuf_size = chops->subbuf_size; | |
113 | channel.num_subbuf = chops->num_subbuf; | |
114 | channel.switch_timer_interval = chops->switch_timer_interval; | |
115 | channel.read_timer_interval = chops->read_timer_interval; | |
116 | channel.output = chops->output; | |
ea207e3b | 117 | memcpy(channel.padding, chops->padding, sizeof(chops->padding)); |
4dbc372b | 118 | |
b8e2fb80 | 119 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_METADATA, &channel); |
f3ed775e DG |
120 | } |
121 | ||
122 | int kernctl_create_channel(int fd, struct lttng_channel_attr *chops) | |
16421f6e | 123 | { |
b8e2fb80 | 124 | struct lttng_kernel_abi_channel channel; |
4dbc372b | 125 | |
c74101ef | 126 | memset(&channel, 0, sizeof(channel)); |
b8e2fb80 FD |
127 | if (lttng_kernel_abi_use_old_abi) { |
128 | struct lttng_kernel_abi_old_channel old_channel; | |
4dbc372b JD |
129 | |
130 | old_channel.overwrite = chops->overwrite; | |
131 | old_channel.subbuf_size = chops->subbuf_size; | |
132 | old_channel.num_subbuf = chops->num_subbuf; | |
133 | old_channel.switch_timer_interval = chops->switch_timer_interval; | |
134 | old_channel.read_timer_interval = chops->read_timer_interval; | |
135 | old_channel.output = chops->output; | |
f853c53a DG |
136 | |
137 | memset(old_channel.padding, 0, sizeof(old_channel.padding)); | |
138 | /* | |
139 | * The new channel padding is smaller than the old ABI so we use the | |
140 | * new ABI padding size for the memcpy. | |
141 | */ | |
142 | memcpy(old_channel.padding, chops->padding, sizeof(chops->padding)); | |
4dbc372b | 143 | |
b8e2fb80 | 144 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_OLD_CHANNEL, |
5226f1bc | 145 | &old_channel); |
4dbc372b JD |
146 | } |
147 | ||
148 | channel.overwrite = chops->overwrite; | |
149 | channel.subbuf_size = chops->subbuf_size; | |
150 | channel.num_subbuf = chops->num_subbuf; | |
151 | channel.switch_timer_interval = chops->switch_timer_interval; | |
152 | channel.read_timer_interval = chops->read_timer_interval; | |
153 | channel.output = chops->output; | |
ea207e3b | 154 | memcpy(channel.padding, chops->padding, sizeof(chops->padding)); |
4dbc372b | 155 | |
b8e2fb80 | 156 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_CHANNEL, &channel); |
16421f6e DG |
157 | } |
158 | ||
46820c8b MD |
159 | int kernctl_syscall_mask(int fd, char **syscall_mask, uint32_t *nr_bits) |
160 | { | |
b8e2fb80 | 161 | struct lttng_kernel_abi_syscall_mask kmask_len, *kmask = NULL; |
46820c8b MD |
162 | size_t array_alloc_len; |
163 | char *new_mask; | |
164 | int ret = 0; | |
165 | ||
166 | if (!syscall_mask) { | |
167 | ret = -1; | |
168 | goto end; | |
169 | } | |
170 | ||
171 | if (!nr_bits) { | |
172 | ret = -1; | |
173 | goto end; | |
174 | } | |
175 | ||
176 | kmask_len.len = 0; | |
b8e2fb80 | 177 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SYSCALL_MASK, &kmask_len); |
46820c8b MD |
178 | if (ret) { |
179 | goto end; | |
180 | } | |
181 | ||
1cbd136b | 182 | array_alloc_len = lttng_align_ceil(kmask_len.len, 8) >> 3; |
834978fd | 183 | |
aff3dd5c | 184 | kmask = (lttng_kernel_abi_syscall_mask *) zmalloc(sizeof(*kmask) + array_alloc_len); |
46820c8b MD |
185 | if (!kmask) { |
186 | ret = -1; | |
187 | goto end; | |
188 | } | |
189 | ||
190 | kmask->len = kmask_len.len; | |
b8e2fb80 | 191 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SYSCALL_MASK, kmask); |
46820c8b MD |
192 | if (ret) { |
193 | goto end; | |
194 | } | |
195 | ||
aff3dd5c | 196 | new_mask = (char *) realloc(*syscall_mask, array_alloc_len); |
46820c8b MD |
197 | if (!new_mask) { |
198 | ret = -1; | |
199 | goto end; | |
200 | } | |
201 | memcpy(new_mask, kmask->mask, array_alloc_len); | |
202 | *syscall_mask = new_mask; | |
203 | *nr_bits = kmask->len; | |
204 | ||
205 | end: | |
206 | free(kmask); | |
207 | return ret; | |
208 | } | |
209 | ||
ccf10263 MD |
210 | int kernctl_track_pid(int fd, int pid) |
211 | { | |
acbe1c12 FD |
212 | int ret = LTTNG_IOCTL_CHECK( |
213 | fd, LTTNG_KERNEL_ABI_SESSION_TRACK_PID, pid); | |
214 | ||
215 | if (ret == -ENOSYS) { | |
216 | ret = LTTNG_IOCTL_CHECK(fd, | |
217 | LTTNG_KERNEL_ABI_OLD_SESSION_TRACK_PID, pid); | |
218 | } | |
219 | ||
220 | return ret; | |
ccf10263 MD |
221 | } |
222 | ||
223 | int kernctl_untrack_pid(int fd, int pid) | |
224 | { | |
acbe1c12 FD |
225 | int ret = LTTNG_IOCTL_CHECK( |
226 | fd, LTTNG_KERNEL_ABI_SESSION_UNTRACK_PID, pid); | |
227 | ||
228 | if (ret == -ENOSYS) { | |
229 | ret = LTTNG_IOCTL_CHECK(fd, | |
230 | LTTNG_KERNEL_ABI_OLD_SESSION_UNTRACK_PID, pid); | |
231 | } | |
232 | ||
233 | return ret; | |
ccf10263 MD |
234 | } |
235 | ||
a5dfbb9d MD |
236 | int kernctl_list_tracker_pids(int fd) |
237 | { | |
b8e2fb80 | 238 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_LIST_TRACKER_PIDS); |
a5dfbb9d MD |
239 | } |
240 | ||
b8e2fb80 | 241 | static enum lttng_kernel_abi_tracker_type get_kernel_tracker_type( |
159b042f | 242 | enum lttng_process_attr process_attr) |
d01c0e56 | 243 | { |
159b042f JG |
244 | switch (process_attr) { |
245 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
b8e2fb80 | 246 | return LTTNG_KERNEL_ABI_TRACKER_PID; |
159b042f | 247 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
b8e2fb80 | 248 | return LTTNG_KERNEL_ABI_TRACKER_VPID; |
159b042f | 249 | case LTTNG_PROCESS_ATTR_USER_ID: |
b8e2fb80 | 250 | return LTTNG_KERNEL_ABI_TRACKER_UID; |
159b042f | 251 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
b8e2fb80 | 252 | return LTTNG_KERNEL_ABI_TRACKER_VUID; |
159b042f | 253 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
b8e2fb80 | 254 | return LTTNG_KERNEL_ABI_TRACKER_GID; |
159b042f | 255 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
b8e2fb80 | 256 | return LTTNG_KERNEL_ABI_TRACKER_VGID; |
d01c0e56 | 257 | default: |
b8e2fb80 | 258 | return LTTNG_KERNEL_ABI_TRACKER_UNKNOWN; |
d01c0e56 MD |
259 | } |
260 | } | |
261 | ||
159b042f | 262 | int kernctl_track_id(int fd, enum lttng_process_attr process_attr, int id) |
d01c0e56 | 263 | { |
b8e2fb80 | 264 | struct lttng_kernel_abi_tracker_args args; |
acbe1c12 | 265 | int ret; |
d01c0e56 MD |
266 | |
267 | args.id = id; | |
159b042f | 268 | args.type = get_kernel_tracker_type(process_attr); |
b8e2fb80 | 269 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
270 | errno = EINVAL; |
271 | return -1; | |
272 | } | |
acbe1c12 FD |
273 | |
274 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_TRACK_ID, &args); | |
275 | if (ret == -ENOSYS) { | |
276 | ret = LTTNG_IOCTL_CHECK(fd, | |
277 | LTTNG_KERNEL_ABI_OLD_SESSION_TRACK_ID, &args); | |
278 | } | |
279 | ||
280 | return ret; | |
d01c0e56 MD |
281 | } |
282 | ||
159b042f | 283 | int kernctl_untrack_id(int fd, enum lttng_process_attr process_attr, int id) |
d01c0e56 | 284 | { |
b8e2fb80 | 285 | struct lttng_kernel_abi_tracker_args args; |
acbe1c12 | 286 | int ret; |
d01c0e56 MD |
287 | |
288 | args.id = id; | |
159b042f | 289 | args.type = get_kernel_tracker_type(process_attr); |
b8e2fb80 | 290 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
291 | errno = EINVAL; |
292 | return -1; | |
293 | } | |
acbe1c12 FD |
294 | |
295 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_UNTRACK_ID, &args); | |
296 | if (ret == -ENOSYS) { | |
297 | ret = LTTNG_IOCTL_CHECK(fd, | |
298 | LTTNG_KERNEL_ABI_OLD_SESSION_UNTRACK_ID, &args); | |
299 | } | |
300 | ||
301 | return ret; | |
d01c0e56 MD |
302 | } |
303 | ||
159b042f | 304 | int kernctl_list_tracker_ids(int fd, enum lttng_process_attr process_attr) |
d01c0e56 | 305 | { |
b8e2fb80 | 306 | struct lttng_kernel_abi_tracker_args args; |
acbe1c12 | 307 | int ret; |
d01c0e56 MD |
308 | |
309 | args.id = -1; | |
159b042f | 310 | args.type = get_kernel_tracker_type(process_attr); |
b8e2fb80 | 311 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
312 | errno = EINVAL; |
313 | return -1; | |
314 | } | |
acbe1c12 FD |
315 | |
316 | ret = LTTNG_IOCTL_NO_CHECK( | |
b8e2fb80 | 317 | fd, LTTNG_KERNEL_ABI_SESSION_LIST_TRACKER_IDS, &args); |
acbe1c12 FD |
318 | if (ret == -ENOSYS) { |
319 | ret = LTTNG_IOCTL_NO_CHECK(fd, | |
320 | LTTNG_KERNEL_ABI_OLD_SESSION_LIST_TRACKER_IDS, | |
321 | &args); | |
322 | } | |
323 | ||
324 | return ret; | |
d01c0e56 MD |
325 | } |
326 | ||
eded6438 | 327 | int kernctl_session_regenerate_metadata(int fd) |
93ec662e | 328 | { |
b8e2fb80 | 329 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_METADATA_REGEN); |
93ec662e JD |
330 | } |
331 | ||
c2561365 JD |
332 | int kernctl_session_regenerate_statedump(int fd) |
333 | { | |
b8e2fb80 | 334 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_STATEDUMP); |
c2561365 JD |
335 | } |
336 | ||
8ff4109e JR |
337 | int kernctl_session_set_name(int fd, const char *name) |
338 | { | |
339 | int ret; | |
b8e2fb80 | 340 | struct lttng_kernel_abi_session_name session_name; |
8ff4109e JR |
341 | |
342 | ret = lttng_strncpy(session_name.name, name, sizeof(session_name.name)); | |
343 | if (ret) { | |
344 | goto end; | |
345 | } | |
346 | ||
347 | ret = LTTNG_IOCTL_CHECK( | |
b8e2fb80 | 348 | fd, LTTNG_KERNEL_ABI_SESSION_SET_NAME, &session_name); |
acbe1c12 FD |
349 | if (ret == -ENOSYS) { |
350 | ret = LTTNG_IOCTL_CHECK(fd, | |
351 | LTTNG_KERNEL_ABI_OLD_SESSION_SET_NAME, | |
352 | &session_name); | |
353 | } | |
354 | ||
8ff4109e JR |
355 | end: |
356 | return ret; | |
357 | } | |
358 | ||
e04b2181 JR |
359 | int kernctl_session_set_creation_time(int fd, time_t time) |
360 | { | |
361 | int ret; | |
b8e2fb80 | 362 | struct lttng_kernel_abi_session_creation_time creation_time; |
e04b2181 JR |
363 | |
364 | ret = time_to_iso8601_str(time, creation_time.iso8601, | |
365 | sizeof(creation_time.iso8601)); | |
366 | if (ret) { | |
367 | goto end; | |
368 | } | |
369 | ||
b8e2fb80 | 370 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_SET_CREATION_TIME, |
e04b2181 | 371 | &creation_time); |
acbe1c12 FD |
372 | if (ret == -ENOSYS) { |
373 | ret = LTTNG_IOCTL_CHECK(fd, | |
374 | LTTNG_KERNEL_ABI_OLD_SESSION_SET_CREATION_TIME, | |
375 | &creation_time); | |
376 | } | |
377 | ||
e04b2181 JR |
378 | end: |
379 | return ret; | |
380 | } | |
381 | ||
964ccb60 | 382 | int kernctl_create_stream(int fd) |
16421f6e | 383 | { |
b8e2fb80 FD |
384 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_STREAM, |
385 | LTTNG_KERNEL_ABI_STREAM); | |
16421f6e DG |
386 | } |
387 | ||
b8e2fb80 | 388 | int kernctl_create_event(int fd, struct lttng_kernel_abi_event *ev) |
16421f6e | 389 | { |
b8e2fb80 FD |
390 | if (lttng_kernel_abi_use_old_abi) { |
391 | struct lttng_kernel_abi_old_event old_event; | |
4dbc372b | 392 | |
10600be0 | 393 | memset(&old_event, 0, sizeof(old_event)); |
4dbc372b JD |
394 | memcpy(old_event.name, ev->name, sizeof(old_event.name)); |
395 | old_event.instrumentation = ev->instrumentation; | |
396 | switch (ev->instrumentation) { | |
b8e2fb80 | 397 | case LTTNG_KERNEL_ABI_KPROBE: |
4dbc372b JD |
398 | old_event.u.kprobe.addr = ev->u.kprobe.addr; |
399 | old_event.u.kprobe.offset = ev->u.kprobe.offset; | |
400 | memcpy(old_event.u.kprobe.symbol_name, | |
401 | ev->u.kprobe.symbol_name, | |
402 | sizeof(old_event.u.kprobe.symbol_name)); | |
403 | break; | |
b8e2fb80 | 404 | case LTTNG_KERNEL_ABI_KRETPROBE: |
4dbc372b JD |
405 | old_event.u.kretprobe.addr = ev->u.kretprobe.addr; |
406 | old_event.u.kretprobe.offset = ev->u.kretprobe.offset; | |
407 | memcpy(old_event.u.kretprobe.symbol_name, | |
408 | ev->u.kretprobe.symbol_name, | |
409 | sizeof(old_event.u.kretprobe.symbol_name)); | |
410 | break; | |
b8e2fb80 | 411 | case LTTNG_KERNEL_ABI_FUNCTION: |
4dbc372b JD |
412 | memcpy(old_event.u.ftrace.symbol_name, |
413 | ev->u.ftrace.symbol_name, | |
414 | sizeof(old_event.u.ftrace.symbol_name)); | |
415 | break; | |
416 | default: | |
417 | break; | |
418 | } | |
419 | ||
b8e2fb80 | 420 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_OLD_EVENT, |
5226f1bc | 421 | &old_event); |
4dbc372b | 422 | } |
b8e2fb80 | 423 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_EVENT, ev); |
16421f6e DG |
424 | } |
425 | ||
b8e2fb80 | 426 | int kernctl_add_context(int fd, struct lttng_kernel_abi_context *ctx) |
16421f6e | 427 | { |
b8e2fb80 FD |
428 | if (lttng_kernel_abi_use_old_abi) { |
429 | struct lttng_kernel_abi_old_context old_ctx; | |
4dbc372b | 430 | |
10600be0 | 431 | memset(&old_ctx, 0, sizeof(old_ctx)); |
4dbc372b JD |
432 | old_ctx.ctx = ctx->ctx; |
433 | /* only type that uses the union */ | |
b8e2fb80 | 434 | if (ctx->ctx == LTTNG_KERNEL_ABI_CONTEXT_PERF_CPU_COUNTER) { |
4dbc372b JD |
435 | old_ctx.u.perf_counter.type = |
436 | ctx->u.perf_counter.type; | |
437 | old_ctx.u.perf_counter.config = | |
438 | ctx->u.perf_counter.config; | |
439 | memcpy(old_ctx.u.perf_counter.name, | |
440 | ctx->u.perf_counter.name, | |
441 | sizeof(old_ctx.u.perf_counter.name)); | |
442 | } | |
b8e2fb80 FD |
443 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_CONTEXT, |
444 | &old_ctx); | |
4dbc372b | 445 | } |
b8e2fb80 | 446 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_CONTEXT, ctx); |
16421f6e DG |
447 | } |
448 | ||
964ccb60 | 449 | |
5226f1bc | 450 | /* Enable event, channel and session LTTNG_IOCTL_CHECK */ |
f3ed775e DG |
451 | int kernctl_enable(int fd) |
452 | { | |
b8e2fb80 FD |
453 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_ENABLE, |
454 | LTTNG_KERNEL_ABI_ENABLE); | |
f3ed775e DG |
455 | } |
456 | ||
5226f1bc | 457 | /* Disable event, channel and session LTTNG_IOCTL_CHECK */ |
f3ed775e DG |
458 | int kernctl_disable(int fd) |
459 | { | |
b8e2fb80 FD |
460 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_DISABLE, |
461 | LTTNG_KERNEL_ABI_DISABLE); | |
f3ed775e DG |
462 | } |
463 | ||
964ccb60 | 464 | int kernctl_start_session(int fd) |
16421f6e | 465 | { |
b8e2fb80 FD |
466 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_SESSION_START, |
467 | LTTNG_KERNEL_ABI_SESSION_START); | |
964ccb60 MD |
468 | } |
469 | ||
470 | int kernctl_stop_session(int fd) | |
471 | { | |
b8e2fb80 FD |
472 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_SESSION_STOP, |
473 | LTTNG_KERNEL_ABI_SESSION_STOP); | |
16421f6e DG |
474 | } |
475 | ||
cfb1c9bc JR |
476 | int kernctl_create_event_notifier_group(int fd) |
477 | { | |
478 | return LTTNG_IOCTL_NO_CHECK(fd, | |
b8e2fb80 | 479 | LTTNG_KERNEL_ABI_EVENT_NOTIFIER_GROUP_CREATE); |
cfb1c9bc JR |
480 | } |
481 | ||
482 | int kernctl_create_event_notifier_group_notification_fd(int group_fd) | |
483 | { | |
484 | return LTTNG_IOCTL_NO_CHECK(group_fd, | |
b8e2fb80 | 485 | LTTNG_KERNEL_ABI_EVENT_NOTIFIER_GROUP_NOTIFICATION_FD); |
cfb1c9bc JR |
486 | } |
487 | ||
90aa04a1 | 488 | int kernctl_create_event_notifier_group_error_counter(int group_fd, |
b8e2fb80 | 489 | const struct lttng_kernel_abi_counter_conf *error_counter_conf) |
90aa04a1 | 490 | { |
b8e2fb80 | 491 | return LTTNG_IOCTL_NO_CHECK(group_fd, LTTNG_KERNEL_ABI_COUNTER, |
90aa04a1 FD |
492 | error_counter_conf); |
493 | } | |
494 | ||
495 | int kernctl_counter_get_aggregate_value(int counter_fd, | |
b8e2fb80 | 496 | struct lttng_kernel_abi_counter_aggregate *value) |
90aa04a1 | 497 | { |
b8e2fb80 | 498 | return LTTNG_IOCTL_NO_CHECK(counter_fd, LTTNG_KERNEL_ABI_COUNTER_AGGREGATE, |
90aa04a1 FD |
499 | value); |
500 | } | |
501 | ||
502 | int kernctl_counter_clear(int counter_fd, | |
b8e2fb80 | 503 | struct lttng_kernel_abi_counter_clear *clear) |
90aa04a1 | 504 | { |
b8e2fb80 | 505 | return LTTNG_IOCTL_NO_CHECK(counter_fd, LTTNG_KERNEL_ABI_COUNTER_CLEAR, |
90aa04a1 FD |
506 | clear); |
507 | } | |
508 | ||
cfb1c9bc | 509 | int kernctl_create_event_notifier(int group_fd, |
b8e2fb80 | 510 | const struct lttng_kernel_abi_event_notifier *event_notifier) |
cfb1c9bc JR |
511 | { |
512 | return LTTNG_IOCTL_NO_CHECK(group_fd, | |
b8e2fb80 | 513 | LTTNG_KERNEL_ABI_EVENT_NOTIFIER_CREATE, event_notifier); |
cfb1c9bc JR |
514 | } |
515 | ||
bbd6675c JR |
516 | int kernctl_capture(int fd, const struct lttng_bytecode *capture) |
517 | { | |
518 | int ret; | |
b8e2fb80 | 519 | struct lttng_kernel_abi_capture_bytecode *kb; |
bbd6675c JR |
520 | |
521 | /* Translate bytecode to kernel bytecode. */ | |
aff3dd5c | 522 | kb = (lttng_kernel_abi_capture_bytecode *) zmalloc(sizeof(*kb) + capture->len); |
bbd6675c JR |
523 | if (!kb) { |
524 | ret = -ENOMEM; | |
525 | goto end; | |
526 | } | |
527 | ||
528 | kb->len = capture->len; | |
529 | kb->reloc_offset = capture->reloc_table_offset; | |
530 | kb->seqnum = capture->seqnum; | |
531 | memcpy(kb->data, capture->data, capture->len); | |
b8e2fb80 | 532 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_CAPTURE, kb); |
bbd6675c JR |
533 | free(kb); |
534 | end: | |
535 | return ret; | |
536 | } | |
537 | ||
2b00d462 | 538 | int kernctl_filter(int fd, const struct lttng_bytecode *filter) |
00a62084 | 539 | { |
b8e2fb80 | 540 | struct lttng_kernel_abi_filter_bytecode *kb; |
00a62084 MD |
541 | uint32_t len; |
542 | int ret; | |
543 | ||
544 | /* Translate bytecode to kernel bytecode */ | |
aff3dd5c | 545 | kb = (lttng_kernel_abi_filter_bytecode *) zmalloc(sizeof(*kb) + filter->len); |
00a62084 MD |
546 | if (!kb) |
547 | return -ENOMEM; | |
548 | kb->len = len = filter->len; | |
549 | kb->reloc_offset = filter->reloc_table_offset; | |
550 | kb->seqnum = filter->seqnum; | |
551 | memcpy(kb->data, filter->data, len); | |
b8e2fb80 | 552 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_FILTER, kb); |
00a62084 MD |
553 | free(kb); |
554 | return ret; | |
555 | } | |
556 | ||
b8e2fb80 | 557 | int kernctl_add_callsite(int fd, struct lttng_kernel_abi_event_callsite *callsite) |
1ab8c2ad | 558 | { |
b8e2fb80 | 559 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_ADD_CALLSITE, callsite); |
1ab8c2ad FD |
560 | } |
561 | ||
964ccb60 MD |
562 | int kernctl_tracepoint_list(int fd) |
563 | { | |
b8e2fb80 FD |
564 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_TRACEPOINT_LIST, |
565 | LTTNG_KERNEL_ABI_TRACEPOINT_LIST); | |
964ccb60 MD |
566 | } |
567 | ||
d02666a9 MD |
568 | int kernctl_syscall_list(int fd) |
569 | { | |
b8e2fb80 | 570 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_SYSCALL_LIST); |
d02666a9 MD |
571 | } |
572 | ||
b8e2fb80 | 573 | int kernctl_tracer_version(int fd, struct lttng_kernel_abi_tracer_version *v) |
964ccb60 | 574 | { |
4dbc372b JD |
575 | int ret; |
576 | ||
b8e2fb80 FD |
577 | if (lttng_kernel_abi_use_old_abi == -1) { |
578 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_VERSION, v); | |
4dbc372b | 579 | if (!ret) { |
b8e2fb80 | 580 | lttng_kernel_abi_use_old_abi = 0; |
4dbc372b JD |
581 | goto end; |
582 | } | |
b8e2fb80 | 583 | lttng_kernel_abi_use_old_abi = 1; |
4dbc372b | 584 | } |
b8e2fb80 FD |
585 | if (lttng_kernel_abi_use_old_abi) { |
586 | struct lttng_kernel_abi_old_tracer_version old_v; | |
4dbc372b | 587 | |
b8e2fb80 | 588 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_TRACER_VERSION, &old_v); |
4dbc372b JD |
589 | if (ret) { |
590 | goto end; | |
591 | } | |
592 | v->major = old_v.major; | |
593 | v->minor = old_v.minor; | |
594 | v->patchlevel = old_v.patchlevel; | |
595 | } else { | |
b8e2fb80 | 596 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_VERSION, v); |
4dbc372b JD |
597 | } |
598 | ||
599 | end: | |
600 | return ret; | |
964ccb60 MD |
601 | } |
602 | ||
c052142c | 603 | int kernctl_tracer_abi_version(int fd, |
b8e2fb80 | 604 | struct lttng_kernel_abi_tracer_abi_version *v) |
c052142c | 605 | { |
b8e2fb80 | 606 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_ABI_VERSION, v); |
c052142c MD |
607 | } |
608 | ||
964ccb60 MD |
609 | int kernctl_wait_quiescent(int fd) |
610 | { | |
b8e2fb80 FD |
611 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_WAIT_QUIESCENT, |
612 | LTTNG_KERNEL_ABI_WAIT_QUIESCENT); | |
964ccb60 MD |
613 | } |
614 | ||
964ccb60 MD |
615 | int kernctl_buffer_flush(int fd) |
616 | { | |
b8e2fb80 | 617 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_FLUSH); |
964ccb60 MD |
618 | } |
619 | ||
f22dd891 MD |
620 | int kernctl_buffer_flush_empty(int fd) |
621 | { | |
b8e2fb80 | 622 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_FLUSH_EMPTY); |
f22dd891 MD |
623 | } |
624 | ||
99930a9d JR |
625 | int kernctl_buffer_clear(int fd) |
626 | { | |
b8e2fb80 | 627 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_CLEAR); |
99930a9d JR |
628 | } |
629 | ||
41dc93d9 JG |
630 | int kernctl_get_next_subbuf_metadata_check(int fd, bool *consistent) |
631 | { | |
632 | return LTTNG_IOCTL_NO_CHECK(fd, | |
b8e2fb80 | 633 | LTTNG_KERNEL_ABI_RING_BUFFER_GET_NEXT_SUBBUF_METADATA_CHECK, |
41dc93d9 JG |
634 | consistent); |
635 | } | |
636 | ||
93ec662e JD |
637 | /* returns the version of the metadata. */ |
638 | int kernctl_get_metadata_version(int fd, uint64_t *version) | |
639 | { | |
b8e2fb80 FD |
640 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_METADATA_VERSION, |
641 | version); | |
93ec662e JD |
642 | } |
643 | ||
8024cc8c JD |
644 | int kernctl_metadata_cache_dump(int fd) |
645 | { | |
b8e2fb80 | 646 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_METADATA_CACHE_DUMP); |
8024cc8c | 647 | } |
964ccb60 MD |
648 | |
649 | /* Buffer operations */ | |
650 | ||
651 | /* For mmap mode, readable without "get" operation */ | |
652 | ||
16421f6e DG |
653 | /* returns the length to mmap. */ |
654 | int kernctl_get_mmap_len(int fd, unsigned long *len) | |
655 | { | |
b8e2fb80 FD |
656 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MMAP_LEN, |
657 | len); | |
16421f6e DG |
658 | } |
659 | ||
964ccb60 MD |
660 | /* returns the maximum size for sub-buffers. */ |
661 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len) | |
662 | { | |
b8e2fb80 FD |
663 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MAX_SUBBUF_SIZE, |
664 | len); | |
964ccb60 MD |
665 | } |
666 | ||
667 | /* | |
668 | * For mmap mode, operate on the current packet (between get/put or | |
669 | * get_next/put_next). | |
670 | */ | |
671 | ||
16421f6e DG |
672 | /* returns the offset of the subbuffer belonging to the mmap reader. */ |
673 | int kernctl_get_mmap_read_offset(int fd, unsigned long *off) | |
674 | { | |
b8e2fb80 FD |
675 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MMAP_READ_OFFSET, |
676 | off); | |
16421f6e DG |
677 | } |
678 | ||
964ccb60 MD |
679 | /* returns the size of the current sub-buffer, without padding (for mmap). */ |
680 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
16421f6e | 681 | { |
b8e2fb80 FD |
682 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SUBBUF_SIZE, |
683 | len); | |
16421f6e DG |
684 | } |
685 | ||
686 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
687 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len) | |
688 | { | |
b8e2fb80 FD |
689 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_PADDED_SUBBUF_SIZE, |
690 | len); | |
16421f6e DG |
691 | } |
692 | ||
964ccb60 MD |
693 | /* Get exclusive read access to the next sub-buffer that can be read. */ |
694 | int kernctl_get_next_subbuf(int fd) | |
16421f6e | 695 | { |
b8e2fb80 | 696 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_NEXT_SUBBUF); |
16421f6e DG |
697 | } |
698 | ||
d4a1283e | 699 | |
16421f6e DG |
700 | /* Release exclusive sub-buffer access, move consumer forward. */ |
701 | int kernctl_put_next_subbuf(int fd) | |
702 | { | |
b8e2fb80 | 703 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_PUT_NEXT_SUBBUF); |
16421f6e DG |
704 | } |
705 | ||
964ccb60 | 706 | /* snapshot */ |
16421f6e DG |
707 | |
708 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
709 | int kernctl_snapshot(int fd) | |
710 | { | |
b8e2fb80 | 711 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT); |
16421f6e DG |
712 | } |
713 | ||
b007ec59 JG |
714 | /* |
715 | * Get a snapshot of the current ring buffer producer and consumer positions, | |
716 | * regardless of whether or not the two positions are contained within the | |
717 | * same sub-buffer. | |
718 | */ | |
719 | int kernctl_snapshot_sample_positions(int fd) | |
720 | { | |
b8e2fb80 | 721 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS); |
b007ec59 JG |
722 | } |
723 | ||
16421f6e DG |
724 | /* Get the consumer position (iteration start) */ |
725 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos) | |
726 | { | |
b8e2fb80 FD |
727 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_GET_CONSUMED, |
728 | pos); | |
16421f6e DG |
729 | } |
730 | ||
731 | /* Get the producer position (iteration end) */ | |
732 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos) | |
733 | { | |
b8e2fb80 FD |
734 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_GET_PRODUCED, |
735 | pos); | |
16421f6e DG |
736 | } |
737 | ||
964ccb60 MD |
738 | /* Get exclusive read access to the specified sub-buffer position */ |
739 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
f3ed775e | 740 | { |
b8e2fb80 FD |
741 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SUBBUF, |
742 | len); | |
f3ed775e | 743 | } |
d0254c7c | 744 | |
964ccb60 MD |
745 | /* Release exclusive sub-buffer access */ |
746 | int kernctl_put_subbuf(int fd) | |
d0254c7c | 747 | { |
b8e2fb80 | 748 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_PUT_SUBBUF); |
d0254c7c | 749 | } |
309167d2 JD |
750 | |
751 | /* Returns the timestamp begin of the current sub-buffer. */ | |
752 | int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin) | |
753 | { | |
b8e2fb80 | 754 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_TIMESTAMP_BEGIN, |
a6bd6d9b | 755 | timestamp_begin); |
309167d2 JD |
756 | } |
757 | ||
758 | /* Returns the timestamp end of the current sub-buffer. */ | |
759 | int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end) | |
760 | { | |
b8e2fb80 | 761 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_TIMESTAMP_END, |
a6bd6d9b | 762 | timestamp_end); |
309167d2 JD |
763 | } |
764 | ||
765 | /* Returns the number of discarded events in the current sub-buffer. */ | |
766 | int kernctl_get_events_discarded(int fd, uint64_t *events_discarded) | |
767 | { | |
b8e2fb80 | 768 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_EVENTS_DISCARDED, |
a6bd6d9b | 769 | events_discarded); |
309167d2 JD |
770 | } |
771 | ||
772 | /* Returns the content size in the current sub-buffer. */ | |
773 | int kernctl_get_content_size(int fd, uint64_t *content_size) | |
774 | { | |
b8e2fb80 | 775 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_CONTENT_SIZE, |
a6bd6d9b | 776 | content_size); |
309167d2 JD |
777 | } |
778 | ||
779 | /* Returns the packet size in the current sub-buffer. */ | |
780 | int kernctl_get_packet_size(int fd, uint64_t *packet_size) | |
781 | { | |
b8e2fb80 | 782 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_PACKET_SIZE, |
5226f1bc | 783 | packet_size); |
309167d2 JD |
784 | } |
785 | ||
786 | /* Returns the stream id of the current sub-buffer. */ | |
787 | int kernctl_get_stream_id(int fd, uint64_t *stream_id) | |
788 | { | |
b8e2fb80 | 789 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_STREAM_ID, |
5226f1bc | 790 | stream_id); |
309167d2 | 791 | } |
d3e2ba59 JD |
792 | |
793 | /* Returns the current timestamp. */ | |
794 | int kernctl_get_current_timestamp(int fd, uint64_t *ts) | |
795 | { | |
b8e2fb80 | 796 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_CURRENT_TIMESTAMP, |
5226f1bc | 797 | ts); |
d3e2ba59 | 798 | } |
fb83fe64 JD |
799 | |
800 | /* Returns the packet sequence number of the current sub-buffer. */ | |
801 | int kernctl_get_sequence_number(int fd, uint64_t *seq) | |
802 | { | |
b8e2fb80 FD |
803 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SEQ_NUM, |
804 | seq); | |
fb83fe64 | 805 | } |
000fa86f JD |
806 | |
807 | /* Returns the stream instance id. */ | |
808 | int kernctl_get_instance_id(int fd, uint64_t *id) | |
809 | { | |
b8e2fb80 FD |
810 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_INSTANCE_ID, |
811 | id); | |
000fa86f | 812 | } |