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 | */ | |
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 | */ | |
55 | static inline int compat_ioctl_no_arg(int fd, unsigned long oldname, | |
56 | unsigned long newname) | |
57 | { | |
58 | int ret; | |
59 | ||
b8e2fb80 | 60 | if (lttng_kernel_abi_use_old_abi == -1) { |
5226f1bc | 61 | ret = LTTNG_IOCTL_NO_CHECK(fd, newname); |
4dbc372b | 62 | if (!ret) { |
b8e2fb80 | 63 | lttng_kernel_abi_use_old_abi = 0; |
4dbc372b JD |
64 | goto end; |
65 | } | |
b8e2fb80 | 66 | lttng_kernel_abi_use_old_abi = 1; |
4dbc372b | 67 | } |
b8e2fb80 | 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 | { |
b8e2fb80 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 | { |
b8e2fb80 | 87 | struct lttng_kernel_abi_channel channel; |
4dbc372b | 88 | |
b8e2fb80 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 | |
b8e2fb80 | 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 | |
b8e2fb80 | 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 | { |
b8e2fb80 | 125 | struct lttng_kernel_abi_channel channel; |
4dbc372b | 126 | |
c74101ef | 127 | memset(&channel, 0, sizeof(channel)); |
b8e2fb80 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 | |
b8e2fb80 | 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 | |
b8e2fb80 | 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 | { | |
b8e2fb80 | 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; | |
b8e2fb80 | 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; | |
b8e2fb80 | 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 | { | |
b8e2fb80 | 213 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_TRACK_PID, pid); |
ccf10263 MD |
214 | } |
215 | ||
216 | int kernctl_untrack_pid(int fd, int pid) | |
217 | { | |
b8e2fb80 | 218 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_UNTRACK_PID, pid); |
ccf10263 MD |
219 | } |
220 | ||
a5dfbb9d MD |
221 | int kernctl_list_tracker_pids(int fd) |
222 | { | |
b8e2fb80 | 223 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_LIST_TRACKER_PIDS); |
a5dfbb9d MD |
224 | } |
225 | ||
b8e2fb80 | 226 | static enum lttng_kernel_abi_tracker_type get_kernel_tracker_type( |
159b042f | 227 | enum lttng_process_attr process_attr) |
d01c0e56 | 228 | { |
159b042f JG |
229 | switch (process_attr) { |
230 | case LTTNG_PROCESS_ATTR_PROCESS_ID: | |
b8e2fb80 | 231 | return LTTNG_KERNEL_ABI_TRACKER_PID; |
159b042f | 232 | case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID: |
b8e2fb80 | 233 | return LTTNG_KERNEL_ABI_TRACKER_VPID; |
159b042f | 234 | case LTTNG_PROCESS_ATTR_USER_ID: |
b8e2fb80 | 235 | return LTTNG_KERNEL_ABI_TRACKER_UID; |
159b042f | 236 | case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID: |
b8e2fb80 | 237 | return LTTNG_KERNEL_ABI_TRACKER_VUID; |
159b042f | 238 | case LTTNG_PROCESS_ATTR_GROUP_ID: |
b8e2fb80 | 239 | return LTTNG_KERNEL_ABI_TRACKER_GID; |
159b042f | 240 | case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID: |
b8e2fb80 | 241 | return LTTNG_KERNEL_ABI_TRACKER_VGID; |
d01c0e56 | 242 | default: |
b8e2fb80 | 243 | return LTTNG_KERNEL_ABI_TRACKER_UNKNOWN; |
d01c0e56 MD |
244 | } |
245 | } | |
246 | ||
159b042f | 247 | int kernctl_track_id(int fd, enum lttng_process_attr process_attr, int id) |
d01c0e56 | 248 | { |
b8e2fb80 | 249 | struct lttng_kernel_abi_tracker_args args; |
d01c0e56 MD |
250 | |
251 | args.id = id; | |
159b042f | 252 | args.type = get_kernel_tracker_type(process_attr); |
b8e2fb80 | 253 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
254 | errno = EINVAL; |
255 | return -1; | |
256 | } | |
b8e2fb80 | 257 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_TRACK_ID, &args); |
d01c0e56 MD |
258 | } |
259 | ||
159b042f | 260 | int kernctl_untrack_id(int fd, enum lttng_process_attr process_attr, int id) |
d01c0e56 | 261 | { |
b8e2fb80 | 262 | struct lttng_kernel_abi_tracker_args args; |
d01c0e56 MD |
263 | |
264 | args.id = id; | |
159b042f | 265 | args.type = get_kernel_tracker_type(process_attr); |
b8e2fb80 | 266 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
267 | errno = EINVAL; |
268 | return -1; | |
269 | } | |
b8e2fb80 | 270 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_UNTRACK_ID, &args); |
d01c0e56 MD |
271 | } |
272 | ||
159b042f | 273 | int kernctl_list_tracker_ids(int fd, enum lttng_process_attr process_attr) |
d01c0e56 | 274 | { |
b8e2fb80 | 275 | struct lttng_kernel_abi_tracker_args args; |
d01c0e56 MD |
276 | |
277 | args.id = -1; | |
159b042f | 278 | args.type = get_kernel_tracker_type(process_attr); |
b8e2fb80 | 279 | if (args.type == LTTNG_KERNEL_ABI_TRACKER_UNKNOWN) { |
d01c0e56 MD |
280 | errno = EINVAL; |
281 | return -1; | |
282 | } | |
283 | return LTTNG_IOCTL_NO_CHECK( | |
b8e2fb80 | 284 | fd, LTTNG_KERNEL_ABI_SESSION_LIST_TRACKER_IDS, &args); |
d01c0e56 MD |
285 | } |
286 | ||
eded6438 | 287 | int kernctl_session_regenerate_metadata(int fd) |
93ec662e | 288 | { |
b8e2fb80 | 289 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_METADATA_REGEN); |
93ec662e JD |
290 | } |
291 | ||
c2561365 JD |
292 | int kernctl_session_regenerate_statedump(int fd) |
293 | { | |
b8e2fb80 | 294 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_STATEDUMP); |
c2561365 JD |
295 | } |
296 | ||
8ff4109e JR |
297 | int kernctl_session_set_name(int fd, const char *name) |
298 | { | |
299 | int ret; | |
b8e2fb80 | 300 | struct lttng_kernel_abi_session_name session_name; |
8ff4109e JR |
301 | |
302 | ret = lttng_strncpy(session_name.name, name, sizeof(session_name.name)); | |
303 | if (ret) { | |
304 | goto end; | |
305 | } | |
306 | ||
307 | ret = LTTNG_IOCTL_CHECK( | |
b8e2fb80 | 308 | fd, LTTNG_KERNEL_ABI_SESSION_SET_NAME, &session_name); |
8ff4109e JR |
309 | end: |
310 | return ret; | |
311 | } | |
312 | ||
e04b2181 JR |
313 | int kernctl_session_set_creation_time(int fd, time_t time) |
314 | { | |
315 | int ret; | |
b8e2fb80 | 316 | struct lttng_kernel_abi_session_creation_time creation_time; |
e04b2181 JR |
317 | |
318 | ret = time_to_iso8601_str(time, creation_time.iso8601, | |
319 | sizeof(creation_time.iso8601)); | |
320 | if (ret) { | |
321 | goto end; | |
322 | } | |
323 | ||
b8e2fb80 | 324 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_SESSION_SET_CREATION_TIME, |
e04b2181 JR |
325 | &creation_time); |
326 | end: | |
327 | return ret; | |
328 | } | |
329 | ||
964ccb60 | 330 | int kernctl_create_stream(int fd) |
16421f6e | 331 | { |
b8e2fb80 FD |
332 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_STREAM, |
333 | LTTNG_KERNEL_ABI_STREAM); | |
16421f6e DG |
334 | } |
335 | ||
b8e2fb80 | 336 | int kernctl_create_event(int fd, struct lttng_kernel_abi_event *ev) |
16421f6e | 337 | { |
b8e2fb80 FD |
338 | if (lttng_kernel_abi_use_old_abi) { |
339 | struct lttng_kernel_abi_old_event old_event; | |
4dbc372b | 340 | |
10600be0 | 341 | memset(&old_event, 0, sizeof(old_event)); |
4dbc372b JD |
342 | memcpy(old_event.name, ev->name, sizeof(old_event.name)); |
343 | old_event.instrumentation = ev->instrumentation; | |
344 | switch (ev->instrumentation) { | |
b8e2fb80 | 345 | case LTTNG_KERNEL_ABI_KPROBE: |
4dbc372b JD |
346 | old_event.u.kprobe.addr = ev->u.kprobe.addr; |
347 | old_event.u.kprobe.offset = ev->u.kprobe.offset; | |
348 | memcpy(old_event.u.kprobe.symbol_name, | |
349 | ev->u.kprobe.symbol_name, | |
350 | sizeof(old_event.u.kprobe.symbol_name)); | |
351 | break; | |
b8e2fb80 | 352 | case LTTNG_KERNEL_ABI_KRETPROBE: |
4dbc372b JD |
353 | old_event.u.kretprobe.addr = ev->u.kretprobe.addr; |
354 | old_event.u.kretprobe.offset = ev->u.kretprobe.offset; | |
355 | memcpy(old_event.u.kretprobe.symbol_name, | |
356 | ev->u.kretprobe.symbol_name, | |
357 | sizeof(old_event.u.kretprobe.symbol_name)); | |
358 | break; | |
b8e2fb80 | 359 | case LTTNG_KERNEL_ABI_FUNCTION: |
4dbc372b JD |
360 | memcpy(old_event.u.ftrace.symbol_name, |
361 | ev->u.ftrace.symbol_name, | |
362 | sizeof(old_event.u.ftrace.symbol_name)); | |
363 | break; | |
364 | default: | |
365 | break; | |
366 | } | |
367 | ||
b8e2fb80 | 368 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_OLD_EVENT, |
5226f1bc | 369 | &old_event); |
4dbc372b | 370 | } |
b8e2fb80 | 371 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_EVENT, ev); |
16421f6e DG |
372 | } |
373 | ||
b8e2fb80 | 374 | int kernctl_add_context(int fd, struct lttng_kernel_abi_context *ctx) |
16421f6e | 375 | { |
b8e2fb80 FD |
376 | if (lttng_kernel_abi_use_old_abi) { |
377 | struct lttng_kernel_abi_old_context old_ctx; | |
4dbc372b | 378 | |
10600be0 | 379 | memset(&old_ctx, 0, sizeof(old_ctx)); |
4dbc372b JD |
380 | old_ctx.ctx = ctx->ctx; |
381 | /* only type that uses the union */ | |
b8e2fb80 | 382 | if (ctx->ctx == LTTNG_KERNEL_ABI_CONTEXT_PERF_CPU_COUNTER) { |
4dbc372b JD |
383 | old_ctx.u.perf_counter.type = |
384 | ctx->u.perf_counter.type; | |
385 | old_ctx.u.perf_counter.config = | |
386 | ctx->u.perf_counter.config; | |
387 | memcpy(old_ctx.u.perf_counter.name, | |
388 | ctx->u.perf_counter.name, | |
389 | sizeof(old_ctx.u.perf_counter.name)); | |
390 | } | |
b8e2fb80 FD |
391 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_CONTEXT, |
392 | &old_ctx); | |
4dbc372b | 393 | } |
b8e2fb80 | 394 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_CONTEXT, ctx); |
16421f6e DG |
395 | } |
396 | ||
964ccb60 | 397 | |
5226f1bc | 398 | /* Enable event, channel and session LTTNG_IOCTL_CHECK */ |
f3ed775e DG |
399 | int kernctl_enable(int fd) |
400 | { | |
b8e2fb80 FD |
401 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_ENABLE, |
402 | LTTNG_KERNEL_ABI_ENABLE); | |
f3ed775e DG |
403 | } |
404 | ||
5226f1bc | 405 | /* Disable event, channel and session LTTNG_IOCTL_CHECK */ |
f3ed775e DG |
406 | int kernctl_disable(int fd) |
407 | { | |
b8e2fb80 FD |
408 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_DISABLE, |
409 | LTTNG_KERNEL_ABI_DISABLE); | |
f3ed775e DG |
410 | } |
411 | ||
964ccb60 | 412 | int kernctl_start_session(int fd) |
16421f6e | 413 | { |
b8e2fb80 FD |
414 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_SESSION_START, |
415 | LTTNG_KERNEL_ABI_SESSION_START); | |
964ccb60 MD |
416 | } |
417 | ||
418 | int kernctl_stop_session(int fd) | |
419 | { | |
b8e2fb80 FD |
420 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_SESSION_STOP, |
421 | LTTNG_KERNEL_ABI_SESSION_STOP); | |
16421f6e DG |
422 | } |
423 | ||
cfb1c9bc JR |
424 | int kernctl_create_event_notifier_group(int fd) |
425 | { | |
426 | return LTTNG_IOCTL_NO_CHECK(fd, | |
b8e2fb80 | 427 | LTTNG_KERNEL_ABI_EVENT_NOTIFIER_GROUP_CREATE); |
cfb1c9bc JR |
428 | } |
429 | ||
430 | int kernctl_create_event_notifier_group_notification_fd(int group_fd) | |
431 | { | |
432 | return LTTNG_IOCTL_NO_CHECK(group_fd, | |
b8e2fb80 | 433 | LTTNG_KERNEL_ABI_EVENT_NOTIFIER_GROUP_NOTIFICATION_FD); |
cfb1c9bc JR |
434 | } |
435 | ||
90aa04a1 | 436 | int kernctl_create_event_notifier_group_error_counter(int group_fd, |
b8e2fb80 | 437 | const struct lttng_kernel_abi_counter_conf *error_counter_conf) |
90aa04a1 | 438 | { |
b8e2fb80 | 439 | return LTTNG_IOCTL_NO_CHECK(group_fd, LTTNG_KERNEL_ABI_COUNTER, |
90aa04a1 FD |
440 | error_counter_conf); |
441 | } | |
442 | ||
443 | int kernctl_counter_get_aggregate_value(int counter_fd, | |
b8e2fb80 | 444 | struct lttng_kernel_abi_counter_aggregate *value) |
90aa04a1 | 445 | { |
b8e2fb80 | 446 | return LTTNG_IOCTL_NO_CHECK(counter_fd, LTTNG_KERNEL_ABI_COUNTER_AGGREGATE, |
90aa04a1 FD |
447 | value); |
448 | } | |
449 | ||
450 | int kernctl_counter_clear(int counter_fd, | |
b8e2fb80 | 451 | struct lttng_kernel_abi_counter_clear *clear) |
90aa04a1 | 452 | { |
b8e2fb80 | 453 | return LTTNG_IOCTL_NO_CHECK(counter_fd, LTTNG_KERNEL_ABI_COUNTER_CLEAR, |
90aa04a1 FD |
454 | clear); |
455 | } | |
456 | ||
cfb1c9bc | 457 | int kernctl_create_event_notifier(int group_fd, |
b8e2fb80 | 458 | const struct lttng_kernel_abi_event_notifier *event_notifier) |
cfb1c9bc JR |
459 | { |
460 | return LTTNG_IOCTL_NO_CHECK(group_fd, | |
b8e2fb80 | 461 | LTTNG_KERNEL_ABI_EVENT_NOTIFIER_CREATE, event_notifier); |
cfb1c9bc JR |
462 | } |
463 | ||
bbd6675c JR |
464 | int kernctl_capture(int fd, const struct lttng_bytecode *capture) |
465 | { | |
466 | int ret; | |
b8e2fb80 | 467 | struct lttng_kernel_abi_capture_bytecode *kb; |
bbd6675c JR |
468 | |
469 | /* Translate bytecode to kernel bytecode. */ | |
470 | kb = zmalloc(sizeof(*kb) + capture->len); | |
471 | if (!kb) { | |
472 | ret = -ENOMEM; | |
473 | goto end; | |
474 | } | |
475 | ||
476 | kb->len = capture->len; | |
477 | kb->reloc_offset = capture->reloc_table_offset; | |
478 | kb->seqnum = capture->seqnum; | |
479 | memcpy(kb->data, capture->data, capture->len); | |
b8e2fb80 | 480 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_CAPTURE, kb); |
bbd6675c JR |
481 | free(kb); |
482 | end: | |
483 | return ret; | |
484 | } | |
485 | ||
2b00d462 | 486 | int kernctl_filter(int fd, const struct lttng_bytecode *filter) |
00a62084 | 487 | { |
b8e2fb80 | 488 | struct lttng_kernel_abi_filter_bytecode *kb; |
00a62084 MD |
489 | uint32_t len; |
490 | int ret; | |
491 | ||
492 | /* Translate bytecode to kernel bytecode */ | |
493 | kb = zmalloc(sizeof(*kb) + filter->len); | |
494 | if (!kb) | |
495 | return -ENOMEM; | |
496 | kb->len = len = filter->len; | |
497 | kb->reloc_offset = filter->reloc_table_offset; | |
498 | kb->seqnum = filter->seqnum; | |
499 | memcpy(kb->data, filter->data, len); | |
b8e2fb80 | 500 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_FILTER, kb); |
00a62084 MD |
501 | free(kb); |
502 | return ret; | |
503 | } | |
504 | ||
b8e2fb80 | 505 | int kernctl_add_callsite(int fd, struct lttng_kernel_abi_event_callsite *callsite) |
1ab8c2ad | 506 | { |
b8e2fb80 | 507 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_ADD_CALLSITE, callsite); |
1ab8c2ad FD |
508 | } |
509 | ||
964ccb60 MD |
510 | int kernctl_tracepoint_list(int fd) |
511 | { | |
b8e2fb80 FD |
512 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_TRACEPOINT_LIST, |
513 | LTTNG_KERNEL_ABI_TRACEPOINT_LIST); | |
964ccb60 MD |
514 | } |
515 | ||
d02666a9 MD |
516 | int kernctl_syscall_list(int fd) |
517 | { | |
b8e2fb80 | 518 | return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_ABI_SYSCALL_LIST); |
d02666a9 MD |
519 | } |
520 | ||
b8e2fb80 | 521 | int kernctl_tracer_version(int fd, struct lttng_kernel_abi_tracer_version *v) |
964ccb60 | 522 | { |
4dbc372b JD |
523 | int ret; |
524 | ||
b8e2fb80 FD |
525 | if (lttng_kernel_abi_use_old_abi == -1) { |
526 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_VERSION, v); | |
4dbc372b | 527 | if (!ret) { |
b8e2fb80 | 528 | lttng_kernel_abi_use_old_abi = 0; |
4dbc372b JD |
529 | goto end; |
530 | } | |
b8e2fb80 | 531 | lttng_kernel_abi_use_old_abi = 1; |
4dbc372b | 532 | } |
b8e2fb80 FD |
533 | if (lttng_kernel_abi_use_old_abi) { |
534 | struct lttng_kernel_abi_old_tracer_version old_v; | |
4dbc372b | 535 | |
b8e2fb80 | 536 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_OLD_TRACER_VERSION, &old_v); |
4dbc372b JD |
537 | if (ret) { |
538 | goto end; | |
539 | } | |
540 | v->major = old_v.major; | |
541 | v->minor = old_v.minor; | |
542 | v->patchlevel = old_v.patchlevel; | |
543 | } else { | |
b8e2fb80 | 544 | ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_VERSION, v); |
4dbc372b JD |
545 | } |
546 | ||
547 | end: | |
548 | return ret; | |
964ccb60 MD |
549 | } |
550 | ||
c052142c | 551 | int kernctl_tracer_abi_version(int fd, |
b8e2fb80 | 552 | struct lttng_kernel_abi_tracer_abi_version *v) |
c052142c | 553 | { |
b8e2fb80 | 554 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_TRACER_ABI_VERSION, v); |
c052142c MD |
555 | } |
556 | ||
964ccb60 MD |
557 | int kernctl_wait_quiescent(int fd) |
558 | { | |
b8e2fb80 FD |
559 | return compat_ioctl_no_arg(fd, LTTNG_KERNEL_ABI_OLD_WAIT_QUIESCENT, |
560 | LTTNG_KERNEL_ABI_WAIT_QUIESCENT); | |
964ccb60 MD |
561 | } |
562 | ||
964ccb60 MD |
563 | int kernctl_buffer_flush(int fd) |
564 | { | |
b8e2fb80 | 565 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_FLUSH); |
964ccb60 MD |
566 | } |
567 | ||
f22dd891 MD |
568 | int kernctl_buffer_flush_empty(int fd) |
569 | { | |
b8e2fb80 | 570 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_FLUSH_EMPTY); |
f22dd891 MD |
571 | } |
572 | ||
99930a9d JR |
573 | int kernctl_buffer_clear(int fd) |
574 | { | |
b8e2fb80 | 575 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_CLEAR); |
99930a9d JR |
576 | } |
577 | ||
41dc93d9 JG |
578 | int kernctl_get_next_subbuf_metadata_check(int fd, bool *consistent) |
579 | { | |
580 | return LTTNG_IOCTL_NO_CHECK(fd, | |
b8e2fb80 | 581 | LTTNG_KERNEL_ABI_RING_BUFFER_GET_NEXT_SUBBUF_METADATA_CHECK, |
41dc93d9 JG |
582 | consistent); |
583 | } | |
584 | ||
93ec662e JD |
585 | /* returns the version of the metadata. */ |
586 | int kernctl_get_metadata_version(int fd, uint64_t *version) | |
587 | { | |
b8e2fb80 FD |
588 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_METADATA_VERSION, |
589 | version); | |
93ec662e JD |
590 | } |
591 | ||
8024cc8c JD |
592 | int kernctl_metadata_cache_dump(int fd) |
593 | { | |
b8e2fb80 | 594 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_METADATA_CACHE_DUMP); |
8024cc8c | 595 | } |
964ccb60 MD |
596 | |
597 | /* Buffer operations */ | |
598 | ||
599 | /* For mmap mode, readable without "get" operation */ | |
600 | ||
16421f6e DG |
601 | /* returns the length to mmap. */ |
602 | int kernctl_get_mmap_len(int fd, unsigned long *len) | |
603 | { | |
b8e2fb80 FD |
604 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MMAP_LEN, |
605 | len); | |
16421f6e DG |
606 | } |
607 | ||
964ccb60 MD |
608 | /* returns the maximum size for sub-buffers. */ |
609 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len) | |
610 | { | |
b8e2fb80 FD |
611 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MAX_SUBBUF_SIZE, |
612 | len); | |
964ccb60 MD |
613 | } |
614 | ||
615 | /* | |
616 | * For mmap mode, operate on the current packet (between get/put or | |
617 | * get_next/put_next). | |
618 | */ | |
619 | ||
16421f6e DG |
620 | /* returns the offset of the subbuffer belonging to the mmap reader. */ |
621 | int kernctl_get_mmap_read_offset(int fd, unsigned long *off) | |
622 | { | |
b8e2fb80 FD |
623 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_MMAP_READ_OFFSET, |
624 | off); | |
16421f6e DG |
625 | } |
626 | ||
964ccb60 MD |
627 | /* returns the size of the current sub-buffer, without padding (for mmap). */ |
628 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
16421f6e | 629 | { |
b8e2fb80 FD |
630 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SUBBUF_SIZE, |
631 | len); | |
16421f6e DG |
632 | } |
633 | ||
634 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
635 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len) | |
636 | { | |
b8e2fb80 FD |
637 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_PADDED_SUBBUF_SIZE, |
638 | len); | |
16421f6e DG |
639 | } |
640 | ||
964ccb60 MD |
641 | /* Get exclusive read access to the next sub-buffer that can be read. */ |
642 | int kernctl_get_next_subbuf(int fd) | |
16421f6e | 643 | { |
b8e2fb80 | 644 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_NEXT_SUBBUF); |
16421f6e DG |
645 | } |
646 | ||
d4a1283e | 647 | |
16421f6e DG |
648 | /* Release exclusive sub-buffer access, move consumer forward. */ |
649 | int kernctl_put_next_subbuf(int fd) | |
650 | { | |
b8e2fb80 | 651 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_PUT_NEXT_SUBBUF); |
16421f6e DG |
652 | } |
653 | ||
964ccb60 | 654 | /* snapshot */ |
16421f6e DG |
655 | |
656 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
657 | int kernctl_snapshot(int fd) | |
658 | { | |
b8e2fb80 | 659 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT); |
16421f6e DG |
660 | } |
661 | ||
b007ec59 JG |
662 | /* |
663 | * Get a snapshot of the current ring buffer producer and consumer positions, | |
664 | * regardless of whether or not the two positions are contained within the | |
665 | * same sub-buffer. | |
666 | */ | |
667 | int kernctl_snapshot_sample_positions(int fd) | |
668 | { | |
b8e2fb80 | 669 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS); |
b007ec59 JG |
670 | } |
671 | ||
16421f6e DG |
672 | /* Get the consumer position (iteration start) */ |
673 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos) | |
674 | { | |
b8e2fb80 FD |
675 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_GET_CONSUMED, |
676 | pos); | |
16421f6e DG |
677 | } |
678 | ||
679 | /* Get the producer position (iteration end) */ | |
680 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos) | |
681 | { | |
b8e2fb80 FD |
682 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_SNAPSHOT_GET_PRODUCED, |
683 | pos); | |
16421f6e DG |
684 | } |
685 | ||
964ccb60 MD |
686 | /* Get exclusive read access to the specified sub-buffer position */ |
687 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
f3ed775e | 688 | { |
b8e2fb80 FD |
689 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SUBBUF, |
690 | len); | |
f3ed775e | 691 | } |
d0254c7c | 692 | |
964ccb60 MD |
693 | /* Release exclusive sub-buffer access */ |
694 | int kernctl_put_subbuf(int fd) | |
d0254c7c | 695 | { |
b8e2fb80 | 696 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_PUT_SUBBUF); |
d0254c7c | 697 | } |
309167d2 JD |
698 | |
699 | /* Returns the timestamp begin of the current sub-buffer. */ | |
700 | int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin) | |
701 | { | |
b8e2fb80 | 702 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_TIMESTAMP_BEGIN, |
a6bd6d9b | 703 | timestamp_begin); |
309167d2 JD |
704 | } |
705 | ||
706 | /* Returns the timestamp end of the current sub-buffer. */ | |
707 | int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end) | |
708 | { | |
b8e2fb80 | 709 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_TIMESTAMP_END, |
a6bd6d9b | 710 | timestamp_end); |
309167d2 JD |
711 | } |
712 | ||
713 | /* Returns the number of discarded events in the current sub-buffer. */ | |
714 | int kernctl_get_events_discarded(int fd, uint64_t *events_discarded) | |
715 | { | |
b8e2fb80 | 716 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_EVENTS_DISCARDED, |
a6bd6d9b | 717 | events_discarded); |
309167d2 JD |
718 | } |
719 | ||
720 | /* Returns the content size in the current sub-buffer. */ | |
721 | int kernctl_get_content_size(int fd, uint64_t *content_size) | |
722 | { | |
b8e2fb80 | 723 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_CONTENT_SIZE, |
a6bd6d9b | 724 | content_size); |
309167d2 JD |
725 | } |
726 | ||
727 | /* Returns the packet size in the current sub-buffer. */ | |
728 | int kernctl_get_packet_size(int fd, uint64_t *packet_size) | |
729 | { | |
b8e2fb80 | 730 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_PACKET_SIZE, |
5226f1bc | 731 | packet_size); |
309167d2 JD |
732 | } |
733 | ||
734 | /* Returns the stream id of the current sub-buffer. */ | |
735 | int kernctl_get_stream_id(int fd, uint64_t *stream_id) | |
736 | { | |
b8e2fb80 | 737 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_STREAM_ID, |
5226f1bc | 738 | stream_id); |
309167d2 | 739 | } |
d3e2ba59 JD |
740 | |
741 | /* Returns the current timestamp. */ | |
742 | int kernctl_get_current_timestamp(int fd, uint64_t *ts) | |
743 | { | |
b8e2fb80 | 744 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_CURRENT_TIMESTAMP, |
5226f1bc | 745 | ts); |
d3e2ba59 | 746 | } |
fb83fe64 JD |
747 | |
748 | /* Returns the packet sequence number of the current sub-buffer. */ | |
749 | int kernctl_get_sequence_number(int fd, uint64_t *seq) | |
750 | { | |
b8e2fb80 FD |
751 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_GET_SEQ_NUM, |
752 | seq); | |
fb83fe64 | 753 | } |
000fa86f JD |
754 | |
755 | /* Returns the stream instance id. */ | |
756 | int kernctl_get_instance_id(int fd, uint64_t *id) | |
757 | { | |
b8e2fb80 FD |
758 | return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_ABI_RING_BUFFER_INSTANCE_ID, |
759 | id); | |
000fa86f | 760 | } |