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 |
28ab034a JG |
13 | #include "kernel-ctl.hpp" |
14 | #include "kernel-ioctl.hpp" | |
15 | ||
c9e313bc | 16 | #include <common/align.hpp> |
c9e313bc | 17 | #include <common/compat/errno.hpp> |
28ab034a | 18 | #include <common/macros.hpp> |
c9e313bc | 19 | #include <common/time.hpp> |
16421f6e | 20 | |
28ab034a JG |
21 | #include <stdarg.h> |
22 | #include <string.h> | |
23 | #include <sys/ioctl.h> | |
16421f6e | 24 | |
9074be22 SM |
25 | #define LTTNG_IOCTL_CHECK(fildes, request, ...) \ |
26 | ({ \ | |
27 | int _ioctl_ret = ioctl(fildes, request, ##__VA_ARGS__); \ | |
28ab034a | 28 | LTTNG_ASSERT(_ioctl_ret <= 0); \ |
9074be22 SM |
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 | */ | |
b8e2fb80 | 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. | |
b8e2fb80 | 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 | */ | |
28ab034a | 55 | static inline int compat_ioctl_no_arg(int fd, unsigned long oldname, unsigned long newname) |
4dbc372b JD |
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 | { |
28ab034a | 79 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_SESSION, LTTNG_KERNEL_ABI_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 | { |
b8e2fb80 | 85 | struct lttng_kernel_abi_channel channel; |
4dbc372b | 86 | |
b8e2fb80 FD |
87 | if (lttng_kernel_abi_use_old_abi) { |
88 | struct lttng_kernel_abi_old_channel old_channel; | |
10600be0 MD |
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 | |
28ab034a | 105 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_OLD_METADATA, &old_channel); |
4dbc372b JD |
106 | } |
107 | ||
10600be0 | 108 | memset(&channel, 0, sizeof(channel)); |
4dbc372b JD |
109 | channel.overwrite = chops->overwrite; |
110 | channel.subbuf_size = chops->subbuf_size; | |
111 | channel.num_subbuf = chops->num_subbuf; | |
112 | channel.switch_timer_interval = chops->switch_timer_interval; | |
113 | channel.read_timer_interval = chops->read_timer_interval; | |
114 | channel.output = chops->output; | |
ea207e3b | 115 | memcpy(channel.padding, chops->padding, sizeof(chops->padding)); |
4dbc372b | 116 | |
b8e2fb80 | 117 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_METADATA, &channel); |
f3ed775e DG |
118 | } |
119 | ||
120 | int kernctl_create_channel(int fd, struct lttng_channel_attr *chops) | |
16421f6e | 121 | { |
b8e2fb80 | 122 | struct lttng_kernel_abi_channel channel; |
4dbc372b | 123 | |
c74101ef | 124 | memset(&channel, 0, sizeof(channel)); |
b8e2fb80 FD |
125 | if (lttng_kernel_abi_use_old_abi) { |
126 | struct lttng_kernel_abi_old_channel old_channel; | |
4dbc372b JD |
127 | |
128 | old_channel.overwrite = chops->overwrite; | |
129 | old_channel.subbuf_size = chops->subbuf_size; | |
130 | old_channel.num_subbuf = chops->num_subbuf; | |
131 | old_channel.switch_timer_interval = chops->switch_timer_interval; | |
132 | old_channel.read_timer_interval = chops->read_timer_interval; | |
133 | old_channel.output = chops->output; | |
f853c53a DG |
134 | |
135 | memset(old_channel.padding, 0, sizeof(old_channel.padding)); | |
136 | /* | |
137 | * The new channel padding is smaller than the old ABI so we use the | |
138 | * new ABI padding size for the memcpy. | |
139 | */ | |
140 | memcpy(old_channel.padding, chops->padding, sizeof(chops->padding)); | |
4dbc372b | 141 | |
28ab034a | 142 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_OLD_CHANNEL, &old_channel); |
4dbc372b JD |
143 | } |
144 | ||
145 | channel.overwrite = chops->overwrite; | |
146 | channel.subbuf_size = chops->subbuf_size; | |
147 | channel.num_subbuf = chops->num_subbuf; | |
148 | channel.switch_timer_interval = chops->switch_timer_interval; | |
149 | channel.read_timer_interval = chops->read_timer_interval; | |
150 | channel.output = chops->output; | |
ea207e3b | 151 | memcpy(channel.padding, chops->padding, sizeof(chops->padding)); |
4dbc372b | 152 | |
b8e2fb80 | 153 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_CHANNEL, &channel); |
16421f6e DG |
154 | } |
155 | ||
46820c8b MD |
156 | int kernctl_syscall_mask(int fd, char **syscall_mask, uint32_t *nr_bits) |
157 | { | |
cd9adb8b | 158 | struct lttng_kernel_abi_syscall_mask kmask_len, *kmask = nullptr; |
46820c8b MD |
159 | size_t array_alloc_len; |
160 | char *new_mask; | |
161 | int ret = 0; | |
162 | ||
163 | if (!syscall_mask) { | |
164 | ret = -1; | |
165 | goto end; | |
166 | } | |
167 | ||
168 | if (!nr_bits) { | |
169 | ret = -1; | |
170 | goto end; | |
171 | } | |
172 | ||
173 | kmask_len.len = 0; | |
b8e2fb80 | 174 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SYSCALL_MASK, &kmask_len); |
46820c8b MD |
175 | if (ret) { |
176 | goto end; | |
177 | } | |
178 | ||
1cbd136b | 179 | array_alloc_len = lttng_align_ceil(kmask_len.len, 8) >> 3; |
834978fd | 180 | |
64803277 | 181 | kmask = zmalloc<lttng_kernel_abi_syscall_mask>(sizeof(*kmask) + array_alloc_len); |
46820c8b MD |
182 | if (!kmask) { |
183 | ret = -1; | |
184 | goto end; | |
185 | } | |
186 | ||
187 | kmask->len = kmask_len.len; | |
b8e2fb80 | 188 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SYSCALL_MASK, kmask); |
46820c8b MD |
189 | if (ret) { |
190 | goto end; | |
191 | } | |
192 | ||
aff3dd5c | 193 | new_mask = (char *) realloc(*syscall_mask, array_alloc_len); |
46820c8b MD |
194 | if (!new_mask) { |
195 | ret = -1; | |
196 | goto end; | |
197 | } | |
198 | memcpy(new_mask, kmask->mask, array_alloc_len); | |
199 | *syscall_mask = new_mask; | |
200 | *nr_bits = kmask->len; | |
201 | ||
202 | end: | |
203 | free(kmask); | |
204 | return ret; | |
205 | } | |
206 | ||
ccf10263 MD |
207 | int kernctl_track_pid(int fd, int pid) |
208 | { | |
28ab034a | 209 | int ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_TRACK_PID, pid); |
acbe1c12 FD |
210 | |
211 | if (ret == -ENOSYS) { | |
28ab034a | 212 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_SESSION_TRACK_PID, pid); |
acbe1c12 FD |
213 | } |
214 | ||
215 | return ret; | |
ccf10263 MD |
216 | } |
217 | ||
218 | int kernctl_untrack_pid(int fd, int pid) | |
219 | { | |
28ab034a | 220 | int ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_UNTRACK_PID, pid); |
acbe1c12 FD |
221 | |
222 | if (ret == -ENOSYS) { | |
28ab034a | 223 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_SESSION_UNTRACK_PID, pid); |
acbe1c12 FD |
224 | } |
225 | ||
226 | return ret; | |
ccf10263 MD |
227 | } |
228 | ||
a5dfbb9d MD |
229 | int kernctl_list_tracker_pids(int fd) |
230 | { | |
b8e2fb80 | 231 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_LIST_TRACKER_PIDS); |
a5dfbb9d MD |
232 | } |
233 | ||
28ab034a JG |
234 | static enum lttng_kernel_abi_tracker_type |
235 | get_kernel_tracker_type(enum lttng_process_attr process_attr) | |
d01c0e56 | 236 | { |
159b042f JG |
237 | switch (process_attr) { |
238 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
b8e2fb80 | 239 | return LTTNG_KERNEL_ABI_TRACKER_PID; |
159b042f | 240 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
b8e2fb80 | 241 | return LTTNG_KERNEL_ABI_TRACKER_VPID; |
159b042f | 242 | case LTTNG_PROCESS_ATTR_USER_ID: |
b8e2fb80 | 243 | return LTTNG_KERNEL_ABI_TRACKER_UID; |
159b042f | 244 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
b8e2fb80 | 245 | return LTTNG_KERNEL_ABI_TRACKER_VUID; |
159b042f | 246 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
b8e2fb80 | 247 | return LTTNG_KERNEL_ABI_TRACKER_GID; |
159b042f | 248 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
b8e2fb80 | 249 | return LTTNG_KERNEL_ABI_TRACKER_VGID; |
d01c0e56 | 250 | default: |
b8e2fb80 | 251 | return LTTNG_KERNEL_ABI_TRACKER_UNKNOWN; |
d01c0e56 MD |
252 | } |
253 | } | |
254 | ||
159b042f | 255 | int kernctl_track_id(int fd, enum lttng_process_attr process_attr, int id) |
d01c0e56 | 256 | { |
b8e2fb80 | 257 | struct lttng_kernel_abi_tracker_args args; |
acbe1c12 | 258 | int ret; |
d01c0e56 MD |
259 | |
260 | args.id = id; | |
159b042f | 261 | args.type = get_kernel_tracker_type(process_attr); |
b8e2fb80 | 262 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
263 | errno = EINVAL; |
264 | return -1; | |
265 | } | |
acbe1c12 FD |
266 | |
267 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_TRACK_ID, &args); | |
268 | if (ret == -ENOSYS) { | |
28ab034a | 269 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_SESSION_TRACK_ID, &args); |
acbe1c12 FD |
270 | } |
271 | ||
272 | return ret; | |
d01c0e56 MD |
273 | } |
274 | ||
159b042f | 275 | int kernctl_untrack_id(int fd, enum lttng_process_attr process_attr, int id) |
d01c0e56 | 276 | { |
b8e2fb80 | 277 | struct lttng_kernel_abi_tracker_args args; |
acbe1c12 | 278 | int ret; |
d01c0e56 MD |
279 | |
280 | args.id = id; | |
159b042f | 281 | args.type = get_kernel_tracker_type(process_attr); |
b8e2fb80 | 282 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
283 | errno = EINVAL; |
284 | return -1; | |
285 | } | |
acbe1c12 FD |
286 | |
287 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_UNTRACK_ID, &args); | |
288 | if (ret == -ENOSYS) { | |
28ab034a | 289 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_SESSION_UNTRACK_ID, &args); |
acbe1c12 FD |
290 | } |
291 | ||
292 | return ret; | |
d01c0e56 MD |
293 | } |
294 | ||
159b042f | 295 | int kernctl_list_tracker_ids(int fd, enum lttng_process_attr process_attr) |
d01c0e56 | 296 | { |
b8e2fb80 | 297 | struct lttng_kernel_abi_tracker_args args; |
acbe1c12 | 298 | int ret; |
d01c0e56 MD |
299 | |
300 | args.id = -1; | |
159b042f | 301 | args.type = get_kernel_tracker_type(process_attr); |
b8e2fb80 | 302 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
303 | errno = EINVAL; |
304 | return -1; | |
305 | } | |
acbe1c12 | 306 | |
28ab034a | 307 | ret = LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_LIST_TRACKER_IDS, &args); |
acbe1c12 | 308 | if (ret == -ENOSYS) { |
28ab034a JG |
309 | ret = LTTNG_IOCTL_NO_CHECK( |
310 | fd, LTTNG_KERNEL_ABI_OLD_SESSION_LIST_TRACKER_IDS, &args); | |
acbe1c12 FD |
311 | } |
312 | ||
313 | return ret; | |
d01c0e56 MD |
314 | } |
315 | ||
eded6438 | 316 | int kernctl_session_regenerate_metadata(int fd) |
93ec662e | 317 | { |
b8e2fb80 | 318 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_METADATA_REGEN); |
93ec662e JD |
319 | } |
320 | ||
c2561365 JD |
321 | int kernctl_session_regenerate_statedump(int fd) |
322 | { | |
b8e2fb80 | 323 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_STATEDUMP); |
c2561365 JD |
324 | } |
325 | ||
8ff4109e JR |
326 | int kernctl_session_set_name(int fd, const char *name) |
327 | { | |
328 | int ret; | |
b8e2fb80 | 329 | struct lttng_kernel_abi_session_name session_name; |
8ff4109e JR |
330 | |
331 | ret = lttng_strncpy(session_name.name, name, sizeof(session_name.name)); | |
332 | if (ret) { | |
333 | goto end; | |
334 | } | |
335 | ||
28ab034a | 336 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_SET_NAME, &session_name); |
acbe1c12 | 337 | if (ret == -ENOSYS) { |
28ab034a | 338 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_SESSION_SET_NAME, &session_name); |
acbe1c12 FD |
339 | } |
340 | ||
8ff4109e JR |
341 | end: |
342 | return ret; | |
343 | } | |
344 | ||
e04b2181 JR |
345 | int kernctl_session_set_creation_time(int fd, time_t time) |
346 | { | |
347 | int ret; | |
b8e2fb80 | 348 | struct lttng_kernel_abi_session_creation_time creation_time; |
e04b2181 | 349 | |
28ab034a | 350 | ret = time_to_iso8601_str(time, creation_time.iso8601, sizeof(creation_time.iso8601)); |
e04b2181 JR |
351 | if (ret) { |
352 | goto end; | |
353 | } | |
354 | ||
28ab034a | 355 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_SET_CREATION_TIME, &creation_time); |
acbe1c12 | 356 | if (ret == -ENOSYS) { |
28ab034a JG |
357 | ret = LTTNG_IOCTL_CHECK( |
358 | fd, LTTNG_KERNEL_ABI_OLD_SESSION_SET_CREATION_TIME, &creation_time); | |
acbe1c12 FD |
359 | } |
360 | ||
e04b2181 JR |
361 | end: |
362 | return ret; | |
363 | } | |
364 | ||
964ccb60 | 365 | int kernctl_create_stream(int fd) |
16421f6e | 366 | { |
28ab034a | 367 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_STREAM, LTTNG_KERNEL_ABI_STREAM); |
16421f6e DG |
368 | } |
369 | ||
b8e2fb80 | 370 | int kernctl_create_event(int fd, struct lttng_kernel_abi_event *ev) |
16421f6e | 371 | { |
b8e2fb80 FD |
372 | if (lttng_kernel_abi_use_old_abi) { |
373 | struct lttng_kernel_abi_old_event old_event; | |
4dbc372b | 374 | |
10600be0 | 375 | memset(&old_event, 0, sizeof(old_event)); |
4dbc372b JD |
376 | memcpy(old_event.name, ev->name, sizeof(old_event.name)); |
377 | old_event.instrumentation = ev->instrumentation; | |
378 | switch (ev->instrumentation) { | |
b8e2fb80 | 379 | case LTTNG_KERNEL_ABI_KPROBE: |
4dbc372b JD |
380 | old_event.u.kprobe.addr = ev->u.kprobe.addr; |
381 | old_event.u.kprobe.offset = ev->u.kprobe.offset; | |
382 | memcpy(old_event.u.kprobe.symbol_name, | |
28ab034a JG |
383 | ev->u.kprobe.symbol_name, |
384 | sizeof(old_event.u.kprobe.symbol_name)); | |
4dbc372b | 385 | break; |
b8e2fb80 | 386 | case LTTNG_KERNEL_ABI_KRETPROBE: |
4dbc372b JD |
387 | old_event.u.kretprobe.addr = ev->u.kretprobe.addr; |
388 | old_event.u.kretprobe.offset = ev->u.kretprobe.offset; | |
389 | memcpy(old_event.u.kretprobe.symbol_name, | |
28ab034a JG |
390 | ev->u.kretprobe.symbol_name, |
391 | sizeof(old_event.u.kretprobe.symbol_name)); | |
4dbc372b | 392 | break; |
b8e2fb80 | 393 | case LTTNG_KERNEL_ABI_FUNCTION: |
4dbc372b | 394 | memcpy(old_event.u.ftrace.symbol_name, |
28ab034a JG |
395 | ev->u.ftrace.symbol_name, |
396 | sizeof(old_event.u.ftrace.symbol_name)); | |
4dbc372b JD |
397 | break; |
398 | default: | |
399 | break; | |
400 | } | |
401 | ||
28ab034a | 402 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_OLD_EVENT, &old_event); |
4dbc372b | 403 | } |
b8e2fb80 | 404 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_EVENT, ev); |
16421f6e DG |
405 | } |
406 | ||
b8e2fb80 | 407 | int kernctl_add_context(int fd, struct lttng_kernel_abi_context *ctx) |
16421f6e | 408 | { |
b8e2fb80 FD |
409 | if (lttng_kernel_abi_use_old_abi) { |
410 | struct lttng_kernel_abi_old_context old_ctx; | |
4dbc372b | 411 | |
10600be0 | 412 | memset(&old_ctx, 0, sizeof(old_ctx)); |
4dbc372b JD |
413 | old_ctx.ctx = ctx->ctx; |
414 | /* only type that uses the union */ | |
b8e2fb80 | 415 | if (ctx->ctx == LTTNG_KERNEL_ABI_CONTEXT_PERF_CPU_COUNTER) { |
28ab034a JG |
416 | old_ctx.u.perf_counter.type = ctx->u.perf_counter.type; |
417 | old_ctx.u.perf_counter.config = ctx->u.perf_counter.config; | |
4dbc372b | 418 | memcpy(old_ctx.u.perf_counter.name, |
28ab034a JG |
419 | ctx->u.perf_counter.name, |
420 | sizeof(old_ctx.u.perf_counter.name)); | |
4dbc372b | 421 | } |
28ab034a | 422 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_CONTEXT, &old_ctx); |
4dbc372b | 423 | } |
b8e2fb80 | 424 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_CONTEXT, ctx); |
16421f6e DG |
425 | } |
426 | ||
5226f1bc | 427 | /* Enable event, channel and session LTTNG_IOCTL_CHECK */ |
f3ed775e DG |
428 | int kernctl_enable(int fd) |
429 | { | |
28ab034a | 430 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_ENABLE, LTTNG_KERNEL_ABI_ENABLE); |
f3ed775e DG |
431 | } |
432 | ||
5226f1bc | 433 | /* Disable event, channel and session LTTNG_IOCTL_CHECK */ |
f3ed775e DG |
434 | int kernctl_disable(int fd) |
435 | { | |
28ab034a | 436 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_DISABLE, LTTNG_KERNEL_ABI_DISABLE); |
f3ed775e DG |
437 | } |
438 | ||
964ccb60 | 439 | int kernctl_start_session(int fd) |
16421f6e | 440 | { |
28ab034a JG |
441 | return compat_ioctl_no_arg( |
442 | fd, LTTNG_KERNEL_ABI_OLD_SESSION_START, LTTNG_KERNEL_ABI_SESSION_START); | |
964ccb60 MD |
443 | } |
444 | ||
445 | int kernctl_stop_session(int fd) | |
446 | { | |
28ab034a JG |
447 | return compat_ioctl_no_arg( |
448 | fd, LTTNG_KERNEL_ABI_OLD_SESSION_STOP, LTTNG_KERNEL_ABI_SESSION_STOP); | |
16421f6e DG |
449 | } |
450 | ||
cfb1c9bc JR |
451 | int kernctl_create_event_notifier_group(int fd) |
452 | { | |
28ab034a | 453 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_EVENT_NOTIFIER_GROUP_CREATE); |
cfb1c9bc JR |
454 | } |
455 | ||
456 | int kernctl_create_event_notifier_group_notification_fd(int group_fd) | |
457 | { | |
458 | return LTTNG_IOCTL_NO_CHECK(group_fd, | |
28ab034a | 459 | LTTNG_KERNEL_ABI_EVENT_NOTIFIER_GROUP_NOTIFICATION_FD); |
cfb1c9bc JR |
460 | } |
461 | ||
28ab034a JG |
462 | int kernctl_create_event_notifier_group_error_counter( |
463 | int group_fd, const struct lttng_kernel_abi_counter_conf *error_counter_conf) | |
90aa04a1 | 464 | { |
28ab034a | 465 | return LTTNG_IOCTL_NO_CHECK(group_fd, LTTNG_KERNEL_ABI_COUNTER, error_counter_conf); |
90aa04a1 FD |
466 | } |
467 | ||
468 | int kernctl_counter_get_aggregate_value(int counter_fd, | |
28ab034a | 469 | struct lttng_kernel_abi_counter_aggregate *value) |
90aa04a1 | 470 | { |
28ab034a | 471 | return LTTNG_IOCTL_NO_CHECK(counter_fd, LTTNG_KERNEL_ABI_COUNTER_AGGREGATE, value); |
90aa04a1 FD |
472 | } |
473 | ||
28ab034a | 474 | int kernctl_counter_clear(int counter_fd, struct lttng_kernel_abi_counter_clear *clear) |
90aa04a1 | 475 | { |
28ab034a | 476 | return LTTNG_IOCTL_NO_CHECK(counter_fd, LTTNG_KERNEL_ABI_COUNTER_CLEAR, clear); |
90aa04a1 FD |
477 | } |
478 | ||
cfb1c9bc | 479 | int kernctl_create_event_notifier(int group_fd, |
28ab034a | 480 | const struct lttng_kernel_abi_event_notifier *event_notifier) |
cfb1c9bc | 481 | { |
28ab034a JG |
482 | return LTTNG_IOCTL_NO_CHECK( |
483 | group_fd, LTTNG_KERNEL_ABI_EVENT_NOTIFIER_CREATE, event_notifier); | |
cfb1c9bc JR |
484 | } |
485 | ||
bbd6675c JR |
486 | int kernctl_capture(int fd, const struct lttng_bytecode *capture) |
487 | { | |
488 | int ret; | |
b8e2fb80 | 489 | struct lttng_kernel_abi_capture_bytecode *kb; |
bbd6675c JR |
490 | |
491 | /* Translate bytecode to kernel bytecode. */ | |
64803277 | 492 | kb = zmalloc<lttng_kernel_abi_capture_bytecode>(sizeof(*kb) + capture->len); |
bbd6675c JR |
493 | if (!kb) { |
494 | ret = -ENOMEM; | |
495 | goto end; | |
496 | } | |
497 | ||
498 | kb->len = capture->len; | |
499 | kb->reloc_offset = capture->reloc_table_offset; | |
500 | kb->seqnum = capture->seqnum; | |
501 | memcpy(kb->data, capture->data, capture->len); | |
b8e2fb80 | 502 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_CAPTURE, kb); |
bbd6675c JR |
503 | free(kb); |
504 | end: | |
505 | return ret; | |
506 | } | |
507 | ||
2b00d462 | 508 | int kernctl_filter(int fd, const struct lttng_bytecode *filter) |
00a62084 | 509 | { |
b8e2fb80 | 510 | struct lttng_kernel_abi_filter_bytecode *kb; |
00a62084 MD |
511 | uint32_t len; |
512 | int ret; | |
513 | ||
514 | /* Translate bytecode to kernel bytecode */ | |
64803277 | 515 | kb = zmalloc<lttng_kernel_abi_filter_bytecode>(sizeof(*kb) + filter->len); |
00a62084 MD |
516 | if (!kb) |
517 | return -ENOMEM; | |
518 | kb->len = len = filter->len; | |
519 | kb->reloc_offset = filter->reloc_table_offset; | |
520 | kb->seqnum = filter->seqnum; | |
521 | memcpy(kb->data, filter->data, len); | |
b8e2fb80 | 522 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_FILTER, kb); |
00a62084 MD |
523 | free(kb); |
524 | return ret; | |
525 | } | |
526 | ||
b8e2fb80 | 527 | int kernctl_add_callsite(int fd, struct lttng_kernel_abi_event_callsite *callsite) |
1ab8c2ad | 528 | { |
b8e2fb80 | 529 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_ADD_CALLSITE, callsite); |
1ab8c2ad FD |
530 | } |
531 | ||
964ccb60 MD |
532 | int kernctl_tracepoint_list(int fd) |
533 | { | |
28ab034a JG |
534 | return compat_ioctl_no_arg( |
535 | fd, LTTNG_KERNEL_ABI_OLD_TRACEPOINT_LIST, LTTNG_KERNEL_ABI_TRACEPOINT_LIST); | |
964ccb60 MD |
536 | } |
537 | ||
d02666a9 MD |
538 | int kernctl_syscall_list(int fd) |
539 | { | |
b8e2fb80 | 540 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_SYSCALL_LIST); |
d02666a9 MD |
541 | } |
542 | ||
b8e2fb80 | 543 | int kernctl_tracer_version(int fd, struct lttng_kernel_abi_tracer_version *v) |
964ccb60 | 544 | { |
4dbc372b JD |
545 | int ret; |
546 | ||
b8e2fb80 FD |
547 | if (lttng_kernel_abi_use_old_abi == -1) { |
548 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_VERSION, v); | |
4dbc372b | 549 | if (!ret) { |
b8e2fb80 | 550 | lttng_kernel_abi_use_old_abi = 0; |
4dbc372b JD |
551 | goto end; |
552 | } | |
b8e2fb80 | 553 | lttng_kernel_abi_use_old_abi = 1; |
4dbc372b | 554 | } |
b8e2fb80 FD |
555 | if (lttng_kernel_abi_use_old_abi) { |
556 | struct lttng_kernel_abi_old_tracer_version old_v; | |
4dbc372b | 557 | |
b8e2fb80 | 558 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_TRACER_VERSION, &old_v); |
4dbc372b JD |
559 | if (ret) { |
560 | goto end; | |
561 | } | |
562 | v->major = old_v.major; | |
563 | v->minor = old_v.minor; | |
564 | v->patchlevel = old_v.patchlevel; | |
565 | } else { | |
b8e2fb80 | 566 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_VERSION, v); |
4dbc372b JD |
567 | } |
568 | ||
569 | end: | |
570 | return ret; | |
964ccb60 MD |
571 | } |
572 | ||
28ab034a | 573 | int kernctl_tracer_abi_version(int fd, struct lttng_kernel_abi_tracer_abi_version *v) |
c052142c | 574 | { |
b8e2fb80 | 575 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_ABI_VERSION, v); |
c052142c MD |
576 | } |
577 | ||
964ccb60 MD |
578 | int kernctl_wait_quiescent(int fd) |
579 | { | |
28ab034a JG |
580 | return compat_ioctl_no_arg( |
581 | fd, LTTNG_KERNEL_ABI_OLD_WAIT_QUIESCENT, LTTNG_KERNEL_ABI_WAIT_QUIESCENT); | |
964ccb60 MD |
582 | } |
583 | ||
964ccb60 MD |
584 | int kernctl_buffer_flush(int fd) |
585 | { | |
b8e2fb80 | 586 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_FLUSH); |
964ccb60 MD |
587 | } |
588 | ||
f22dd891 MD |
589 | int kernctl_buffer_flush_empty(int fd) |
590 | { | |
b8e2fb80 | 591 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_FLUSH_EMPTY); |
f22dd891 MD |
592 | } |
593 | ||
99930a9d JR |
594 | int kernctl_buffer_clear(int fd) |
595 | { | |
b8e2fb80 | 596 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_CLEAR); |
99930a9d JR |
597 | } |
598 | ||
41dc93d9 JG |
599 | int kernctl_get_next_subbuf_metadata_check(int fd, bool *consistent) |
600 | { | |
28ab034a JG |
601 | return LTTNG_IOCTL_NO_CHECK( |
602 | fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_NEXT_SUBBUF_METADATA_CHECK, consistent); | |
41dc93d9 JG |
603 | } |
604 | ||
93ec662e JD |
605 | /* returns the version of the metadata. */ |
606 | int kernctl_get_metadata_version(int fd, uint64_t *version) | |
607 | { | |
28ab034a | 608 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_METADATA_VERSION, version); |
93ec662e JD |
609 | } |
610 | ||
8024cc8c JD |
611 | int kernctl_metadata_cache_dump(int fd) |
612 | { | |
b8e2fb80 | 613 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_METADATA_CACHE_DUMP); |
8024cc8c | 614 | } |
964ccb60 MD |
615 | |
616 | /* Buffer operations */ | |
617 | ||
618 | /* For mmap mode, readable without "get" operation */ | |
619 | ||
16421f6e DG |
620 | /* returns the length to mmap. */ |
621 | int kernctl_get_mmap_len(int fd, unsigned long *len) | |
622 | { | |
28ab034a | 623 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MMAP_LEN, len); |
16421f6e DG |
624 | } |
625 | ||
964ccb60 MD |
626 | /* returns the maximum size for sub-buffers. */ |
627 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len) | |
628 | { | |
28ab034a | 629 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MAX_SUBBUF_SIZE, len); |
964ccb60 MD |
630 | } |
631 | ||
632 | /* | |
633 | * For mmap mode, operate on the current packet (between get/put or | |
634 | * get_next/put_next). | |
635 | */ | |
636 | ||
16421f6e DG |
637 | /* returns the offset of the subbuffer belonging to the mmap reader. */ |
638 | int kernctl_get_mmap_read_offset(int fd, unsigned long *off) | |
639 | { | |
28ab034a | 640 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MMAP_READ_OFFSET, off); |
16421f6e DG |
641 | } |
642 | ||
964ccb60 MD |
643 | /* returns the size of the current sub-buffer, without padding (for mmap). */ |
644 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
16421f6e | 645 | { |
28ab034a | 646 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SUBBUF_SIZE, len); |
16421f6e DG |
647 | } |
648 | ||
649 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
650 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len) | |
651 | { | |
28ab034a | 652 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len); |
16421f6e DG |
653 | } |
654 | ||
964ccb60 MD |
655 | /* Get exclusive read access to the next sub-buffer that can be read. */ |
656 | int kernctl_get_next_subbuf(int fd) | |
16421f6e | 657 | { |
b8e2fb80 | 658 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_NEXT_SUBBUF); |
16421f6e DG |
659 | } |
660 | ||
661 | /* Release exclusive sub-buffer access, move consumer forward. */ | |
662 | int kernctl_put_next_subbuf(int fd) | |
663 | { | |
b8e2fb80 | 664 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_PUT_NEXT_SUBBUF); |
16421f6e DG |
665 | } |
666 | ||
964ccb60 | 667 | /* snapshot */ |
16421f6e DG |
668 | |
669 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
670 | int kernctl_snapshot(int fd) | |
671 | { | |
b8e2fb80 | 672 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT); |
16421f6e DG |
673 | } |
674 | ||
b007ec59 JG |
675 | /* |
676 | * Get a snapshot of the current ring buffer producer and consumer positions, | |
677 | * regardless of whether or not the two positions are contained within the | |
678 | * same sub-buffer. | |
679 | */ | |
680 | int kernctl_snapshot_sample_positions(int fd) | |
681 | { | |
b8e2fb80 | 682 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS); |
b007ec59 JG |
683 | } |
684 | ||
16421f6e DG |
685 | /* Get the consumer position (iteration start) */ |
686 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos) | |
687 | { | |
28ab034a | 688 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos); |
16421f6e DG |
689 | } |
690 | ||
691 | /* Get the producer position (iteration end) */ | |
692 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos) | |
693 | { | |
28ab034a | 694 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos); |
16421f6e DG |
695 | } |
696 | ||
964ccb60 MD |
697 | /* Get exclusive read access to the specified sub-buffer position */ |
698 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
f3ed775e | 699 | { |
28ab034a | 700 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SUBBUF, len); |
f3ed775e | 701 | } |
d0254c7c | 702 | |
964ccb60 MD |
703 | /* Release exclusive sub-buffer access */ |
704 | int kernctl_put_subbuf(int fd) | |
d0254c7c | 705 | { |
b8e2fb80 | 706 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_PUT_SUBBUF); |
d0254c7c | 707 | } |
309167d2 JD |
708 | |
709 | /* Returns the timestamp begin of the current sub-buffer. */ | |
710 | int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin) | |
711 | { | |
28ab034a JG |
712 | return LTTNG_IOCTL_CHECK( |
713 | fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_TIMESTAMP_BEGIN, timestamp_begin); | |
309167d2 JD |
714 | } |
715 | ||
716 | /* Returns the timestamp end of the current sub-buffer. */ | |
717 | int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end) | |
718 | { | |
28ab034a | 719 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_TIMESTAMP_END, timestamp_end); |
309167d2 JD |
720 | } |
721 | ||
722 | /* Returns the number of discarded events in the current sub-buffer. */ | |
723 | int kernctl_get_events_discarded(int fd, uint64_t *events_discarded) | |
724 | { | |
28ab034a JG |
725 | return LTTNG_IOCTL_CHECK( |
726 | fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_EVENTS_DISCARDED, events_discarded); | |
309167d2 JD |
727 | } |
728 | ||
729 | /* Returns the content size in the current sub-buffer. */ | |
730 | int kernctl_get_content_size(int fd, uint64_t *content_size) | |
731 | { | |
28ab034a | 732 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_CONTENT_SIZE, content_size); |
309167d2 JD |
733 | } |
734 | ||
735 | /* Returns the packet size in the current sub-buffer. */ | |
736 | int kernctl_get_packet_size(int fd, uint64_t *packet_size) | |
737 | { | |
28ab034a | 738 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_PACKET_SIZE, packet_size); |
309167d2 JD |
739 | } |
740 | ||
741 | /* Returns the stream id of the current sub-buffer. */ | |
742 | int kernctl_get_stream_id(int fd, uint64_t *stream_id) | |
743 | { | |
28ab034a | 744 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_STREAM_ID, stream_id); |
309167d2 | 745 | } |
d3e2ba59 JD |
746 | |
747 | /* Returns the current timestamp. */ | |
748 | int kernctl_get_current_timestamp(int fd, uint64_t *ts) | |
749 | { | |
28ab034a | 750 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_CURRENT_TIMESTAMP, ts); |
d3e2ba59 | 751 | } |
fb83fe64 JD |
752 | |
753 | /* Returns the packet sequence number of the current sub-buffer. */ | |
754 | int kernctl_get_sequence_number(int fd, uint64_t *seq) | |
755 | { | |
28ab034a | 756 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SEQ_NUM, seq); |
fb83fe64 | 757 | } |
000fa86f JD |
758 | |
759 | /* Returns the stream instance id. */ | |
760 | int kernctl_get_instance_id(int fd, uint64_t *id) | |
761 | { | |
28ab034a | 762 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_INSTANCE_ID, id); |
000fa86f | 763 | } |