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[lttng-modules.git] / include / instrumentation / syscalls / headers / syscalls_pointers_override.h
1 /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) */
2
3 #ifndef CREATE_SYSCALL_TABLE
4
5 #define OVERRIDE_32_execve
6 #define OVERRIDE_64_execve
7 SC_LTTNG_TRACEPOINT_EVENT(execve,
8 TP_PROTO(sc_exit(long ret,) const char *filename, char *const *argv, char *const *envp),
9 TP_ARGS(sc_exit(ret,) filename, argv, envp),
10 TP_FIELDS(sc_exit(ctf_integer(long, ret, ret))
11 sc_in(ctf_user_string(filename, filename))
12 sc_in(ctf_integer_hex(char *const *, argv, argv))
13 sc_in(ctf_integer_hex(char *const *, envp, envp))
14 )
15 )
16
17 #ifdef CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM
18
19 /*
20 * Clone()'s `flags` field has two parts:
21 * 1. exit signal: the least significant byte of the `unsigned long` is
22 * the signal the kernel must send to the parent process on child
23 * exit,
24 * 2. clone options: the remaining bytes of the `unsigned long` is used a
25 * bitwise flag for the clone options.
26 */
27 #define CLONE_EXIT_SIGNAL_FLAG_RESERVED_BITS 8
28 #define LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(x) ((x) >> CLONE_EXIT_SIGNAL_FLAG_RESERVED_BITS)
29
30 SC_LTTNG_TRACEPOINT_ENUM(lttng_clone_exit_signal_flags,
31 TP_ENUM_VALUES(
32 ctf_enum_value("SIGHUP", SIGHUP)
33 ctf_enum_value("SIGINT", SIGINT)
34 ctf_enum_value("SIGQUIT", SIGQUIT)
35 ctf_enum_value("SIGILL", SIGILL)
36 ctf_enum_value("SIGTRAP", SIGTRAP)
37 ctf_enum_value("SIGABRT", SIGABRT)
38 ctf_enum_value("SIGIOT", SIGIOT)
39 ctf_enum_value("SIGBUS", SIGBUS)
40 #ifdef SIGEMT
41 ctf_enum_value("SIGEMT", SIGEMT)
42 #endif /* #ifdef SIGEMT */
43 ctf_enum_value("SIGFPE", SIGFPE)
44 ctf_enum_value("SIGKILL", SIGKILL)
45 ctf_enum_value("SIGUSR1", SIGUSR1)
46 ctf_enum_value("SIGSEGV", SIGSEGV)
47 ctf_enum_value("SIGUSR2", SIGUSR2)
48 ctf_enum_value("SIGPIPE", SIGPIPE)
49 ctf_enum_value("SIGALRM", SIGALRM)
50 ctf_enum_value("SIGTERM", SIGTERM)
51 #ifdef SIGSTKFLT
52 ctf_enum_value("SIGSTKFLT", SIGSTKFLT)
53 #endif /* #ifdef SIGSTKFLT */
54 ctf_enum_value("SIGCHLD", SIGCHLD)
55 #ifdef SIGCLD
56 ctf_enum_value("SIGCLD", SIGCLD)
57 #endif /* #ifdef SIGCLD */
58 ctf_enum_value("SIGCONT", SIGCONT)
59 ctf_enum_value("SIGSTOP", SIGSTOP)
60 ctf_enum_value("SIGTSTP", SIGTSTP)
61 ctf_enum_value("SIGTTIN", SIGTTIN)
62 ctf_enum_value("SIGTTOU", SIGTTOU)
63 ctf_enum_value("SIGURG", SIGURG)
64 ctf_enum_value("SIGXCPU", SIGXCPU)
65 ctf_enum_value("SIGXFSZ", SIGXFSZ)
66 ctf_enum_value("SIGVTALR", SIGVTALRM)
67 ctf_enum_value("SIGPROF", SIGPROF)
68 ctf_enum_value("SIGWINCH", SIGWINCH)
69 ctf_enum_value("SIGIO", SIGIO)
70 ctf_enum_value("SIGPOLL", SIGPOLL)
71 ctf_enum_value("SIGPWR", SIGPWR)
72 #ifdef SIGINFO
73 ctf_enum_value("SIGINFO", SIGINFO)
74 #endif /* #ifdef SIGINFO */
75 #ifdef SIGLOST
76 ctf_enum_value("SIGLOST", SIGLOST)
77 #endif /* #ifdef SIGLOST */
78 ctf_enum_value("SIGSYS", SIGSYS)
79 #ifdef SIGUNUSED
80 ctf_enum_value("SIGUNUSED", SIGUNUSED)
81 #endif /* #ifdef SIGUNUSED */
82 )
83 )
84
85 SC_LTTNG_TRACEPOINT_ENUM(lttng_clone_option_flags,
86 TP_ENUM_VALUES(
87 ctf_enum_value("CLONE_CHILD_CLEARTID", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_CHILD_CLEARTID))
88 ctf_enum_value("CLONE_CHILD_SETTID", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_CHILD_SETTID))
89 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,5,0))
90 ctf_enum_value("CLONE_CLEAR_SIGHAND", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_CLEAR_SIGHAND))
91 #endif /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,5,0)) */
92 ctf_enum_value("CLONE_DETACHED", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_DETACHED))
93 ctf_enum_value("CLONE_FILES", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_FILES))
94 ctf_enum_value("CLONE_FS", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_FS))
95 ctf_enum_value("CLONE_IO", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_IO))
96 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0))
97 ctf_enum_value("CLONE_NEWCGROUP", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_NEWCGROUP))
98 #endif /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) */
99 ctf_enum_value("CLONE_NEWIPC", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_NEWIPC))
100 ctf_enum_value("CLONE_NEWNET", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_NEWNET))
101 ctf_enum_value("CLONE_NEWNS", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_NEWNS))
102 ctf_enum_value("CLONE_NEWPID", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_NEWPID))
103 ctf_enum_value("CLONE_NEWUSER", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_NEWUSER))
104 ctf_enum_value("CLONE_NEWUTS", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_NEWUTS))
105 ctf_enum_value("CLONE_PARENT", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_PARENT))
106 ctf_enum_value("CLONE_PARENT_SETTID", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_PARENT_SETTID))
107 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,2,0))
108 ctf_enum_value("CLONE_PIDFD", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_PIDFD))
109 #endif /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,2,0)) */
110 ctf_enum_value("CLONE_PTRACE", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_PTRACE))
111 ctf_enum_value("CLONE_SETTLS", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_SETTLS))
112 ctf_enum_value("CLONE_SIGHAND", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_SIGHAND))
113 ctf_enum_value("CLONE_SYSVSEM", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_SYSVSEM))
114 ctf_enum_value("CLONE_THREAD", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_THREAD))
115 ctf_enum_value("CLONE_UNTRACED", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_UNTRACED))
116 ctf_enum_value("CLONE_VFORK", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_VFORK))
117 ctf_enum_value("CLONE_VM", LTTNG_CLONE_OPTIONS_FLAGS_TO_CTF(CLONE_VM))
118 )
119 )
120
121 #define LTTNG_CLONE_FLAGS_EXIT_SIGNAL \
122 lttng_kernel_static_event_field("exit_signal", \
123 lttng_kernel_static_type_enum(&__enum_lttng_clone_exit_signal_flags, \
124 lttng_kernel_static_type_integer(CLONE_EXIT_SIGNAL_FLAG_RESERVED_BITS, \
125 1, 0, __BYTE_ORDER, 16)), \
126 false, false, false)
127
128 #define LTTNG_CLONE_FLAGS_OPTIONS \
129 lttng_kernel_static_event_field("options", \
130 lttng_kernel_static_type_enum(&__enum_lttng_clone_option_flags, \
131 lttng_kernel_static_type_integer( \
132 sizeof(unsigned long) * CHAR_BIT - CLONE_EXIT_SIGNAL_FLAG_RESERVED_BITS, \
133 1, 0, __BYTE_ORDER, 16)), \
134 false, false, false)
135
136 #if (__BYTE_ORDER == __LITTLE_ENDIAN)
137 #define LTTNG_CLONE_FLAGS \
138 lttng_kernel_static_event_field_array( \
139 [0] = LTTNG_CLONE_FLAGS_EXIT_SIGNAL, \
140 [1] = LTTNG_CLONE_FLAGS_OPTIONS, \
141 )
142 #else
143 #define LTTNG_CLONE_FLAGS \
144 lttng_kernel_static_event_field_array( \
145 [0] = LTTNG_CLONE_FLAGS_OPTIONS, \
146 [1] = LTTNG_CLONE_FLAGS_EXIT_SIGNAL, \
147 )
148 #endif
149
150 #endif /* CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM */
151
152 #define OVERRIDE_32_clone
153 #define OVERRIDE_64_clone
154 SC_LTTNG_TRACEPOINT_EVENT(clone,
155 TP_PROTO(sc_exit(long ret,) unsigned long clone_flags, unsigned long newsp,
156 void __user *parent_tid,
157 void __user *child_tid),
158 TP_ARGS(sc_exit(ret,) clone_flags, newsp, parent_tid, child_tid),
159 TP_FIELDS(
160 sc_exit(ctf_integer(long, ret, ret))
161 sc_in(
162 #ifdef CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM
163 ctf_custom_field(
164 ctf_custom_type(
165 lttng_kernel_static_type_struct(2, LTTNG_CLONE_FLAGS, lttng_alignof(unsigned long) * CHAR_BIT)
166 ),
167 flags,
168 ctf_custom_code(
169 ctf_integer_type(unsigned long, clone_flags)
170 )
171 )
172 #else
173 ctf_integer_hex(unsigned long, flags, clone_flags)
174 #endif
175 )
176 sc_in(ctf_integer_hex(unsigned long, newsp, newsp))
177 sc_in(ctf_integer_hex(void *, parent_tid, parent_tid))
178 sc_in(ctf_integer_hex(void *, child_tid, child_tid))
179 )
180 )
181
182 /* present in 32, missing in 64 due to old kernel headers */
183 #define OVERRIDE_32_getcpu
184 #define OVERRIDE_64_getcpu
185 SC_LTTNG_TRACEPOINT_EVENT(getcpu,
186 TP_PROTO(sc_exit(long ret,) unsigned __user *cpup, unsigned __user *nodep, void *tcache),
187 TP_ARGS(sc_exit(ret,) cpup, nodep, tcache),
188 TP_FIELDS(
189 sc_exit(ctf_integer(long, ret, ret))
190 sc_out(ctf_integer_hex(unsigned *, cpup, cpup))
191 sc_out(ctf_integer_hex(unsigned *, nodep, nodep))
192 sc_inout(ctf_integer_hex(void *, tcache, tcache))
193 )
194 )
195
196 #define OVERRIDE_32_pipe2
197 #define OVERRIDE_64_pipe2
198 SC_LTTNG_TRACEPOINT_EVENT(pipe2,
199 TP_PROTO(sc_exit(long ret,) int * fildes, int flags),
200 TP_ARGS(sc_exit(ret,) fildes, flags),
201 TP_FIELDS(sc_exit(ctf_integer(long, ret, ret))
202 sc_out(ctf_user_array(int, fildes, fildes, 2))
203 sc_in(ctf_integer(int, flags, flags))
204 )
205 )
206
207 #define LTTNG_SYSCALL_SELECT_locvar \
208 unsigned long *fds_in, *fds_out, *fds_ex; \
209 unsigned long nr_bytes, nr_ulong; \
210 uint8_t overflow;
211
212 #define LTTNG_SYSCALL_SELECT_code_pre \
213 sc_inout( \
214 { \
215 int err; \
216 unsigned int n_in_bytes; \
217 \
218 tp_locvar->fds_in = NULL; \
219 tp_locvar->fds_out = NULL; \
220 tp_locvar->fds_ex = NULL; \
221 tp_locvar->overflow = 0; \
222 \
223 sc_out( \
224 if (ret <= 0) \
225 goto error; \
226 ) \
227 \
228 if (n <= 0) \
229 goto error; \
230 \
231 /* On error or bogus input, don't copy anything. */ \
232 if (n >__FD_SETSIZE) \
233 goto error; \
234 \
235 n_in_bytes = DIV_ROUND_UP((unsigned int) n, BITS_PER_BYTE); \
236 \
237 /* \
238 * Limit atomic memory allocation to one page, since n \
239 * is limited to 1024 and the smallest page size on Linux \
240 * is 4k, this should not happen, don't try to make it work. \
241 */ \
242 if (n_in_bytes > PAGE_SIZE) { \
243 WARN_ON_ONCE(1); \
244 /* Inform the user that we did not output everything. */ \
245 tp_locvar->overflow = 1; \
246 goto error; \
247 } else { \
248 tp_locvar->nr_bytes = n_in_bytes; \
249 tp_locvar->nr_ulong = DIV_ROUND_UP(n_in_bytes, \
250 sizeof(unsigned long)); \
251 } \
252 \
253 if (inp) { \
254 tp_locvar->fds_in = lttng_tp_mempool_alloc( \
255 tp_locvar->nr_ulong * sizeof(unsigned long)); \
256 if (!tp_locvar->fds_in) \
257 goto error; \
258 \
259 err = lib_ring_buffer_copy_from_user_check_nofault( \
260 tp_locvar->fds_in, inp, \
261 tp_locvar->nr_ulong * sizeof(unsigned long)); \
262 if (err != 0) \
263 goto error; \
264 } \
265 if (outp) { \
266 tp_locvar->fds_out = lttng_tp_mempool_alloc( \
267 tp_locvar->nr_ulong * sizeof(unsigned long)); \
268 if (!tp_locvar->fds_out) \
269 goto error; \
270 \
271 err = lib_ring_buffer_copy_from_user_check_nofault( \
272 tp_locvar->fds_out, outp, \
273 tp_locvar->nr_ulong * sizeof(unsigned long)); \
274 if (err != 0) \
275 goto error; \
276 } \
277 if (exp) { \
278 tp_locvar->fds_ex = lttng_tp_mempool_alloc( \
279 tp_locvar->nr_ulong * sizeof(unsigned long)); \
280 if (!tp_locvar->fds_ex) \
281 goto error; \
282 \
283 err = lib_ring_buffer_copy_from_user_check_nofault( \
284 tp_locvar->fds_ex, exp, \
285 tp_locvar->nr_ulong * sizeof(unsigned long)); \
286 if (err != 0) \
287 goto error; \
288 } \
289 goto end; \
290 \
291 error: \
292 tp_locvar->nr_bytes = 0; \
293 tp_locvar->nr_ulong = 0; \
294 end: ; /* Label at end of compound statement. */ \
295 } \
296 )
297
298 #define LTTNG_SYSCALL_SELECT_fds_field_LE(name, input) \
299 ctf_custom_field( \
300 ctf_custom_type( \
301 lttng_kernel_static_type_integer_from_type(uint8_t, __BYTE_ORDER, 10) \
302 ), \
303 _ ## name ## _length, \
304 ctf_custom_code( \
305 if (input) { \
306 ctf_integer_type(uint8_t, tp_locvar->nr_bytes) \
307 ctf_align(uint8_t) \
308 } else { \
309 ctf_integer_type(uint8_t, 0) \
310 ctf_align(uint8_t) \
311 } \
312 ) \
313 ) \
314 ctf_custom_field( \
315 ctf_custom_type( \
316 lttng_kernel_static_type_sequence(NULL, \
317 lttng_kernel_static_type_integer_from_type(uint8_t, __BYTE_ORDER, 16), \
318 0, \
319 none) \
320 ), \
321 name, \
322 ctf_custom_code( \
323 unsigned int src; \
324 unsigned int nr_bytes_out = 0; \
325 \
326 if (!input) \
327 goto skip_##name; \
328 \
329 for (src = 0; src < tp_locvar->nr_ulong; src++) { \
330 int dst; \
331 for (dst = 0; dst < sizeof(long); dst++) { \
332 if (nr_bytes_out++ >= tp_locvar->nr_bytes) { \
333 goto skip_##name; \
334 } \
335 ctf_user_integer_type(uint8_t, \
336 ((uint8_t __user *) (input->fds_bits + src))[dst]); \
337 } \
338 } \
339 skip_##name: ; \
340 ) \
341 )
342
343 #define LTTNG_SYSCALL_SELECT_fds_field_BE(name, input) \
344 ctf_custom_field( \
345 ctf_custom_type( \
346 lttng_kernel_static_type_integer_from_type(uint8_t, __BYTE_ORDER, 10) \
347 ), \
348 _ ## name ## _length, \
349 ctf_custom_code( \
350 if (input) { \
351 ctf_integer_type(uint8_t, tp_locvar->nr_bytes) \
352 ctf_align(uint8_t) \
353 } else { \
354 ctf_integer_type(uint8_t, 0) \
355 ctf_align(uint8_t) \
356 } \
357 ) \
358 ) \
359 ctf_custom_field( \
360 ctf_custom_type( \
361 lttng_kernel_static_type_sequence(NULL, \
362 lttng_kernel_static_type_integer_from_type(uint8_t, __BYTE_ORDER, 16), \
363 0, \
364 none) \
365 ), \
366 name, \
367 ctf_custom_code( \
368 unsigned int src, nr_bytes_out = 0; \
369 \
370 if (!input) \
371 goto skip_##name; \
372 \
373 for (src = 0; src < tp_locvar->nr_ulong; src++) { \
374 int dst; \
375 for (dst = sizeof(long); dst >= 0; dst--) { \
376 if (nr_bytes_out++ >= tp_locvar->nr_bytes) { \
377 goto skip_##name; \
378 } \
379 ctf_user_integer_type(uint8_t, \
380 ((uint8_t __user *) (input->fds_bits + src))[dst]); \
381 } \
382 } \
383 skip_##name: ; \
384 ) \
385 )
386
387 #define LTTNG_SYSCALL_SELECT_code_post \
388 lttng_tp_mempool_free(tp_locvar->fds_in); \
389 lttng_tp_mempool_free(tp_locvar->fds_out); \
390 lttng_tp_mempool_free(tp_locvar->fds_ex);
391
392 #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM)
393 #define OVERRIDE_32_select
394 #define OVERRIDE_64_select
395 SC_LTTNG_TRACEPOINT_EVENT_CODE(select,
396 TP_PROTO(sc_exit(long ret,) int n, fd_set __user *inp, fd_set __user *outp,
397 fd_set __user *exp, struct timeval *tvp),
398 TP_ARGS(sc_exit(ret,) n, inp, outp, exp, tvp),
399 TP_locvar(
400 LTTNG_SYSCALL_SELECT_locvar
401 ),
402 TP_code_pre(
403 LTTNG_SYSCALL_SELECT_code_pre
404 ),
405 TP_FIELDS(
406 sc_exit(ctf_integer(long, ret, ret))
407 sc_in(ctf_integer(int, n, n))
408 sc_inout(ctf_integer(uint8_t, overflow, tp_locvar->overflow))
409 sc_inout(ctf_integer(struct timeval *, tvp, tvp))
410
411 sc_inout(
412 #if (__BYTE_ORDER == __LITTLE_ENDIAN)
413 LTTNG_SYSCALL_SELECT_fds_field_LE(readfds, inp)
414 LTTNG_SYSCALL_SELECT_fds_field_LE(writefds, outp)
415 LTTNG_SYSCALL_SELECT_fds_field_LE(exceptfds, exp)
416 #else
417 LTTNG_SYSCALL_SELECT_fds_field_BE(readfds, inp)
418 LTTNG_SYSCALL_SELECT_fds_field_BE(writefds, outp)
419 LTTNG_SYSCALL_SELECT_fds_field_BE(exceptfds, exp)
420 #endif
421 )
422 ),
423 TP_code_post(
424 LTTNG_SYSCALL_SELECT_code_post
425 )
426 )
427 #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM) */
428
429 #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM)
430 #define OVERRIDE_32_pselect6
431 #define OVERRIDE_64_pselect6
432 SC_LTTNG_TRACEPOINT_EVENT_CODE(pselect6,
433 TP_PROTO(sc_exit(long ret,) int n, fd_set __user * inp, fd_set __user * outp,
434 fd_set __user * exp, struct timeval __user * tvp, void __user * sig),
435 TP_ARGS(sc_exit(ret,) n, inp, outp, exp, tvp, sig),
436 TP_locvar(
437 LTTNG_SYSCALL_SELECT_locvar
438 ),
439 TP_code_pre(
440 LTTNG_SYSCALL_SELECT_code_pre
441 ),
442 TP_FIELDS(
443 sc_exit(ctf_integer(long, ret, ret))
444 sc_in(ctf_integer(int, n, n))
445 sc_inout(ctf_integer(uint8_t, overflow, tp_locvar->overflow))
446 sc_inout(ctf_integer(struct timeval *, tvp, tvp))
447 sc_in(ctf_integer_hex(void *, sig, sig))
448
449 sc_inout(
450 #if (__BYTE_ORDER == __LITTLE_ENDIAN)
451 LTTNG_SYSCALL_SELECT_fds_field_LE(readfds, inp)
452 LTTNG_SYSCALL_SELECT_fds_field_LE(writefds, outp)
453 LTTNG_SYSCALL_SELECT_fds_field_LE(exceptfds, exp)
454 #else
455 LTTNG_SYSCALL_SELECT_fds_field_BE(readfds, inp)
456 LTTNG_SYSCALL_SELECT_fds_field_BE(writefds, outp)
457 LTTNG_SYSCALL_SELECT_fds_field_BE(exceptfds, exp)
458 #endif
459 )
460 ),
461 TP_code_post(
462 LTTNG_SYSCALL_SELECT_code_post
463 )
464 )
465 #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */
466
467 #ifdef LTTNG_CREATE_FIELD_METADATA
468 #ifndef ONCE_LTTNG_TRACE_POLL_H
469 #define ONCE_LTTNG_TRACE_POLL_H
470
471 #define LTTNG_POLL_NRFLAGS (POLLNVAL + 1)
472 #define POLL_FLAGS_PADDING_SIZE (sizeof(uint8_t) * BITS_PER_BYTE) - \
473 ilog2(LTTNG_POLL_NRFLAGS - 1)
474
475 #ifndef LTTNG_TRACEPOINT_TYPE_EXTERN
476 /*
477 * Only extract the values specified by iBCS2 for now.
478 */
479 static const struct lttng_kernel_event_field *lttng_pollfd_flag_fields[] = {
480 [ilog2(POLLIN)] = lttng_kernel_static_event_field("POLLIN",
481 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
482 false, false, false),
483 [ilog2(POLLPRI)] = lttng_kernel_static_event_field("POLLPRI",
484 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
485 false, false, false),
486 [ilog2(POLLOUT)] = lttng_kernel_static_event_field("POLLOUT",
487 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
488 false, false, false),
489 [ilog2(POLLERR)] = lttng_kernel_static_event_field("POLLERR",
490 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
491 false, false, false),
492 [ilog2(POLLHUP)] = lttng_kernel_static_event_field("POLLHUP",
493 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
494 false, false, false),
495 [ilog2(POLLNVAL)] = lttng_kernel_static_event_field("POLLNVAL",
496 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
497 false, false, false),
498 [ilog2(LTTNG_POLL_NRFLAGS)] = lttng_kernel_static_event_field("padding",
499 lttng_kernel_static_type_integer(POLL_FLAGS_PADDING_SIZE, 1, 0, __LITTLE_ENDIAN, 10),
500 false, false, false),
501 };
502
503 static_assert(((ARRAY_SIZE(lttng_pollfd_flag_fields) - 1) + POLL_FLAGS_PADDING_SIZE) == sizeof(uint8_t) * BITS_PER_BYTE);
504
505 #endif /* LTTNG_TRACEPOINT_TYPE_EXTERN */
506
507 LTTNG_TRACEPOINT_TYPE(PARAMS(const struct lttng_kernel_type_struct lttng_pollfd_flag_fields_struct),
508 PARAMS(lttng_kernel_static_type_struct_init( ARRAY_SIZE(lttng_pollfd_flag_fields), lttng_pollfd_flag_fields, 0)))
509
510 #ifndef LTTNG_TRACEPOINT_TYPE_EXTERN
511 static const struct lttng_kernel_event_field *lttng_pollfd_fields[] = {
512 [0] = lttng_kernel_static_event_field("fd", lttng_kernel_static_type_integer_from_type(int, __BYTE_ORDER, 10),
513 false, false, false),
514 [1] = lttng_kernel_static_event_field("raw_events", lttng_kernel_static_type_integer_from_type(uint16_t, __BYTE_ORDER, 16),
515 false, false, false),
516 [2] = lttng_kernel_static_event_field("events",
517 (const struct lttng_kernel_type_common *) &lttng_pollfd_flag_fields_struct,
518 false, false, false),
519 };
520 #endif /* LTTNG_TRACEPOINT_TYPE_EXTERN */
521
522 LTTNG_TRACEPOINT_TYPE(PARAMS(const struct lttng_kernel_type_struct lttng_pollfd_fields_struct),
523 PARAMS(lttng_kernel_static_type_struct_init(ARRAY_SIZE(lttng_pollfd_fields), lttng_pollfd_fields, 0)))
524
525 #endif /* ONCE_LTTNG_TRACE_POLL_H */
526 #endif /* LTTNG_CREATE_FIELD_METADATA */
527
528 #define LTTNG_SYSCALL_POLL_locvar \
529 unsigned int fds_length, fds_max_len, alloc_fds; \
530 struct pollfd *fds; \
531 uint8_t overflow;
532
533 #define LTTNG_SYSCALL_POLL_code_pre \
534 tp_locvar->fds = NULL; \
535 tp_locvar->overflow = 0; \
536 \
537 sc_in( \
538 if (nfds > PAGE_SIZE / sizeof(struct pollfd)) { \
539 tp_locvar->fds_length = PAGE_SIZE / sizeof(struct pollfd); \
540 tp_locvar->fds_max_len = PAGE_SIZE / sizeof(struct pollfd); \
541 tp_locvar->overflow = 1; \
542 } else { \
543 tp_locvar->fds_length = nfds; \
544 tp_locvar->fds_max_len = nfds; \
545 } \
546 tp_locvar->alloc_fds = tp_locvar->fds_length * sizeof(struct pollfd); \
547 ) \
548 /* \
549 * On exit, the number of active FDs is determined by ret, \
550 * nfds stays the same as the entry, but we only want to \
551 * output the FDs that are relevant. \
552 */ \
553 sc_out( \
554 if (ret <= 0 || ret > nfds) \
555 goto error; \
556 \
557 if (nfds > PAGE_SIZE / sizeof(struct pollfd)) { \
558 tp_locvar->fds_length = PAGE_SIZE / sizeof(struct pollfd); \
559 tp_locvar->fds_max_len = PAGE_SIZE / sizeof(struct pollfd); \
560 tp_locvar->overflow = 1; \
561 } else { \
562 tp_locvar->fds_length = ret; \
563 tp_locvar->fds_max_len = nfds; \
564 } \
565 tp_locvar->alloc_fds = tp_locvar->fds_max_len * sizeof(struct pollfd); \
566 ) \
567 { \
568 int err; \
569 \
570 tp_locvar->fds = lttng_tp_mempool_alloc(tp_locvar->alloc_fds); \
571 if (!tp_locvar->fds) \
572 goto error; \
573 err = lib_ring_buffer_copy_from_user_check_nofault( \
574 tp_locvar->fds, ufds, tp_locvar->alloc_fds); \
575 if (err != 0) \
576 goto error; \
577 } \
578 goto end; \
579 \
580 error: \
581 tp_locvar->fds_length = 0; \
582 tp_locvar->fds_max_len = 0; \
583 end: \
584 ;
585
586 #define LTTNG_SYSCALL_POLL_fds_field \
587 sc_in( \
588 ctf_custom_field( \
589 ctf_custom_type( \
590 lttng_kernel_static_type_sequence("fds_length", \
591 (const struct lttng_kernel_type_common *) &lttng_pollfd_fields_struct, \
592 0, \
593 none) \
594 ), \
595 fds, \
596 ctf_custom_code( \
597 uint32_t i; \
598 \
599 ctf_align(int) /* Align on largest field in struct. */ \
600 for (i = 0; i < tp_locvar->fds_length; i++) { \
601 ctf_integer_type(int, tp_locvar->fds[i].fd) \
602 ctf_integer_type(short, tp_locvar->fds[i].events) \
603 ctf_integer_bitfield_type(uint8_t, \
604 (uint8_t) tp_locvar->fds[i].events) \
605 } \
606 ) \
607 ) \
608 ) \
609 sc_out( \
610 ctf_custom_field( \
611 ctf_custom_type( \
612 lttng_kernel_static_type_sequence("fds_length", \
613 (const struct lttng_kernel_type_common *) &lttng_pollfd_fields_struct, \
614 0, \
615 none) \
616 ), \
617 fds, \
618 ctf_custom_code( \
619 unsigned int i, nr = 0; \
620 \
621 ctf_align(int) /* Align on largest field in struct. */ \
622 /* \
623 * Iterate over the complete array, but only output \
624 * "ret" active FDs. \
625 */ \
626 for (i = 0; i < tp_locvar->fds_max_len; i++) { \
627 if (!tp_locvar->fds[i].revents) \
628 continue; \
629 if (nr++ >= tp_locvar->fds_length) \
630 break; \
631 ctf_integer_type(int, tp_locvar->fds[i].fd) \
632 ctf_integer_type(short, tp_locvar->fds[i].revents) \
633 ctf_integer_bitfield_type(uint8_t, \
634 (uint8_t) tp_locvar->fds[i].revents) \
635 } \
636 /* \
637 * If there is a discrepancy between ret and the \
638 * content of revents (e.g. caused by userspace corrupting \
639 * the array from a concurrent thread), we have to output \
640 * zeros to keep the trace readable. \
641 */ \
642 for (i = nr; i < tp_locvar->fds_length; i++) { \
643 ctf_integer_type(int, 0) \
644 ctf_integer_type(short, 0) \
645 ctf_integer_bitfield_type(uint8_t, 0) \
646 } \
647 ) \
648 ) \
649 )
650
651 #define LTTNG_SYSCALL_POLL_code_post \
652 lttng_tp_mempool_free(tp_locvar->fds);
653
654 #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM)
655 #define OVERRIDE_32_poll
656 #define OVERRIDE_64_poll
657 SC_LTTNG_TRACEPOINT_EVENT_CODE(poll,
658 TP_PROTO(sc_exit(long ret,) struct pollfd __user * ufds,
659 unsigned int nfds, int timeout_msecs),
660 TP_ARGS(sc_exit(ret,) ufds, nfds, timeout_msecs),
661 TP_locvar(
662 LTTNG_SYSCALL_POLL_locvar
663 ),
664 TP_code_pre(
665 LTTNG_SYSCALL_POLL_code_pre
666 ),
667 TP_FIELDS(
668 sc_exit(ctf_integer(long, ret, ret))
669 sc_in(ctf_integer(int, timeout_msecs, timeout_msecs))
670 sc_inout(ctf_integer(unsigned int, nfds, nfds))
671 sc_inout(ctf_integer(unsigned int, fds_length, tp_locvar->fds_length))
672 sc_in(ctf_integer(uint8_t, overflow, tp_locvar->overflow))
673 LTTNG_SYSCALL_POLL_fds_field
674 ),
675 TP_code_post(
676 LTTNG_SYSCALL_POLL_code_post
677 )
678 )
679 #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM) */
680
681 #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM)
682 #define OVERRIDE_32_ppoll
683 #define OVERRIDE_64_ppoll
684 SC_LTTNG_TRACEPOINT_EVENT_CODE(ppoll,
685 TP_PROTO(sc_exit(long ret,) struct pollfd __user * ufds,
686 unsigned int nfds, struct timespec * tsp, const sigset_t * sigmask, size_t sigsetsize),
687 TP_ARGS(sc_exit(ret,) ufds, nfds, tsp, sigmask, sigsetsize),
688 TP_locvar(
689 LTTNG_SYSCALL_POLL_locvar
690 ),
691 TP_code_pre(
692 LTTNG_SYSCALL_POLL_code_pre
693 ),
694 TP_FIELDS(
695 sc_exit(ctf_integer(long, ret, ret))
696 sc_in(ctf_integer(struct timespec *, tsp, tsp))
697 sc_in(ctf_integer(const sigset_t *, sigmask, sigmask))
698 sc_in(ctf_integer(size_t, sigsetsize, sigsetsize))
699 sc_inout(ctf_integer(unsigned int, nfds, nfds))
700 sc_inout(ctf_integer(unsigned int, fds_length, tp_locvar->fds_length))
701 sc_inout(ctf_integer(uint8_t, overflow, tp_locvar->overflow))
702 LTTNG_SYSCALL_POLL_fds_field
703 ),
704 TP_code_post(
705 LTTNG_SYSCALL_POLL_code_post
706 )
707 )
708 #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */
709
710 #include <linux/eventpoll.h>
711
712 SC_LTTNG_TRACEPOINT_ENUM(lttng_epoll_op,
713 TP_ENUM_VALUES(
714 ctf_enum_value("EPOLL_CTL_ADD", EPOLL_CTL_ADD)
715 ctf_enum_value("EPOLL_CTL_DEL", EPOLL_CTL_DEL)
716 ctf_enum_value("EPOLL_CTL_MOD", EPOLL_CTL_MOD)
717 )
718 )
719
720 #ifdef LTTNG_CREATE_FIELD_METADATA
721
722 #ifndef ONCE_LTTNG_TRACE_EPOLL_CTL_H
723 #define ONCE_LTTNG_TRACE_EPOLL_CTL_H
724
725 #define LTTNG_EPOLL_NRFLAGS (POLLHUP + 1)
726 #define EPOLL_FLAGS_PADDING_SIZE (sizeof(uint8_t) * BITS_PER_BYTE) - \
727 ilog2(LTTNG_EPOLL_NRFLAGS - 1)
728
729 #ifndef LTTNG_TRACEPOINT_TYPE_EXTERN
730 /*
731 * Only extract the values specified by iBCS2 for now.
732 */
733 static const struct lttng_kernel_event_field *lttng_epoll_ctl_events_fields[] = {
734 /* 0x0001 */
735 [ilog2(POLLIN)] = lttng_kernel_static_event_field("EPOLLIN",
736 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
737 false, false, false),
738 /* 0x0002 */
739 [ilog2(POLLPRI)] = lttng_kernel_static_event_field("EPOLLPRI",
740 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
741 false, false, false),
742 /* 0x0004 */
743 [ilog2(POLLOUT)] = lttng_kernel_static_event_field("EPOLLOUT",
744 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
745 false, false, false),
746 /* 0x0008 */
747 [ilog2(POLLERR)] = lttng_kernel_static_event_field("EPOLLERR",
748 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
749 false, false, false),
750 /* 0x0010 */
751 [ilog2(POLLHUP)] = lttng_kernel_static_event_field("EPOLLHUP",
752 lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10),
753 false, false, false),
754 [ilog2(LTTNG_EPOLL_NRFLAGS)] = lttng_kernel_static_event_field("padding",
755 lttng_kernel_static_type_integer(EPOLL_FLAGS_PADDING_SIZE, 1, 0, __LITTLE_ENDIAN, 10),
756 false, false, false),
757 };
758 #endif /* LTTNG_TRACEPOINT_TYPE_EXTERN */
759
760 LTTNG_TRACEPOINT_TYPE(PARAMS(const struct lttng_kernel_type_struct lttng_epoll_ctl_events_fields_struct),
761 PARAMS(lttng_kernel_static_type_struct_init(ARRAY_SIZE(lttng_epoll_ctl_events_fields), lttng_epoll_ctl_events_fields, 0)))
762
763 #ifndef LTTNG_TRACEPOINT_TYPE_EXTERN
764 static const struct lttng_kernel_event_field *lttng_epoll_data_fields[] = {
765 [0] = lttng_kernel_static_event_field("u64",
766 lttng_kernel_static_type_integer_from_type(uint64_t, __BYTE_ORDER, 16),
767 false, false, false),
768 [1] = lttng_kernel_static_event_field("fd",
769 lttng_kernel_static_type_integer_from_type(int, __BYTE_ORDER, 10),
770 false, false, false),
771 };
772 #endif /* LTTNG_TRACEPOINT_TYPE_EXTERN */
773
774 LTTNG_TRACEPOINT_TYPE(PARAMS(const struct lttng_kernel_type_struct lttng_epoll_data_fields_struct),
775 PARAMS(lttng_kernel_static_type_struct_init(ARRAY_SIZE(lttng_epoll_data_fields), lttng_epoll_data_fields, 0)))
776
777 #ifndef LTTNG_TRACEPOINT_TYPE_EXTERN
778 static const struct lttng_kernel_event_field *epoll_ctl_fields[] = {
779 [0] = lttng_kernel_static_event_field("data_union",
780 (const struct lttng_kernel_type_common *) &lttng_epoll_data_fields_struct,
781 false, false, false),
782 [1] = lttng_kernel_static_event_field("raw_events",
783 lttng_kernel_static_type_integer_from_type(uint32_t, __BYTE_ORDER, 16),
784 false, false, false),
785 [2] = lttng_kernel_static_event_field("events",
786 (const struct lttng_kernel_type_common *) &lttng_epoll_ctl_events_fields_struct,
787 false, false, false),
788 };
789 #endif /* LTTNG_TRACEPOINT_TYPE_EXTERN */
790
791 LTTNG_TRACEPOINT_TYPE(PARAMS(const struct lttng_kernel_type_struct epoll_ctl_fields_struct),
792 PARAMS(lttng_kernel_static_type_struct_init(ARRAY_SIZE(epoll_ctl_fields), epoll_ctl_fields, 0)))
793
794 #endif /* ONCE_LTTNG_TRACE_EPOLL_CTL_H */
795 #endif /* LTTNG_CREATE_FIELD_METADATA */
796
797 #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM)
798 #define OVERRIDE_32_epoll_ctl
799 #define OVERRIDE_64_epoll_ctl
800 SC_LTTNG_TRACEPOINT_EVENT_CODE(epoll_ctl,
801 TP_PROTO(sc_exit(long ret,) int epfd, int op, int fd,
802 struct epoll_event __user * uevent),
803 TP_ARGS(sc_exit(ret,) epfd, op, fd, uevent),
804 TP_locvar(
805 struct epoll_event event;
806 int err;
807 ),
808 TP_code_pre(
809 tp_locvar->err = lib_ring_buffer_copy_from_user_check_nofault(
810 &tp_locvar->event, uevent, sizeof(struct epoll_event));
811 ),
812 TP_FIELDS(
813 sc_exit(ctf_integer(long, ret, ret))
814 sc_in(ctf_integer(int, epfd, epfd))
815 sc_in(ctf_enum(lttng_epoll_op, int, op_enum, op))
816 sc_in(ctf_integer(int, fd, fd))
817 sc_in(
818 ctf_custom_field(
819 ctf_custom_type(
820 (const struct lttng_kernel_type_common *) &epoll_ctl_fields_struct
821 ),
822 event,
823 ctf_custom_code(
824 ctf_align(uint64_t)
825 if (!tp_locvar->err) {
826 ctf_integer_type(uint64_t, tp_locvar->event.data)
827 ctf_integer_type(int, tp_locvar->event.data)
828 ctf_integer_bitfield_type(uint32_t,
829 tp_locvar->event.events)
830 ctf_integer_bitfield_type(uint8_t,
831 (uint8_t) tp_locvar->event.events)
832 } else {
833 ctf_integer_type(uint64_t, 0)
834 ctf_integer_type(int, 0)
835 ctf_integer_bitfield_type(uint32_t, 0)
836 ctf_integer_bitfield_type(uint8_t, 0)
837 }
838 )
839 )
840 )
841 ),
842 TP_code_post()
843 )
844 #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */
845
846 #ifdef LTTNG_CREATE_FIELD_METADATA
847 #ifndef ONCE_LTTNG_TRACE_EPOLL_H
848 #define ONCE_LTTNG_TRACE_EPOLL_H
849
850 #ifndef LTTNG_TRACEPOINT_TYPE_EXTERN
851 static const struct lttng_kernel_event_field *lttng_epoll_wait_fields[] = lttng_kernel_static_event_field_array(
852 [0] = lttng_kernel_static_event_field("data_union",
853 (const struct lttng_kernel_type_common *) &lttng_epoll_data_fields_struct,
854 false, false, false),
855 [1] = lttng_kernel_static_event_field("raw_events", lttng_kernel_static_type_integer_from_type(uint32_t, __BYTE_ORDER, 16),
856 false, false, false),
857 [2] = lttng_kernel_static_event_field("events",
858 (const struct lttng_kernel_type_common *) &lttng_epoll_ctl_events_fields_struct,
859 false, false, false),
860 );
861
862 static_assert(((ARRAY_SIZE(lttng_epoll_ctl_events_fields) - 1) + EPOLL_FLAGS_PADDING_SIZE) == sizeof(uint8_t) * BITS_PER_BYTE);
863
864 #endif /* LTTNG_TRACEPOINT_TYPE_EXTERN */
865
866 LTTNG_TRACEPOINT_TYPE(PARAMS(const struct lttng_kernel_type_struct lttng_epoll_wait_fields_struct),
867 PARAMS(lttng_kernel_static_type_struct_init(ARRAY_SIZE(lttng_epoll_wait_fields), lttng_epoll_wait_fields, 0)))
868
869 #endif /* ONCE_LTTNG_TRACE_EPOLL_H */
870 #endif /* LTTNG_CREATE_FIELD_METADATA */
871
872 #define LTTNG_SYSCALL_EPOLL_WAIT_locvar \
873 sc_out( \
874 unsigned int fds_length; \
875 uint8_t overflow; \
876 struct epoll_event *events; \
877 )
878
879 #define LTTNG_SYSCALL_EPOLL_WAIT_code_pre \
880 sc_out({ \
881 int err; \
882 unsigned long maxalloc; \
883 \
884 tp_locvar->fds_length = 0; \
885 tp_locvar->events = NULL; \
886 tp_locvar->overflow = 0; \
887 \
888 if (maxevents <= 0 || ret <= 0 || ret > maxevents) \
889 goto skip_code; \
890 \
891 if (maxevents > PAGE_SIZE / sizeof(struct epoll_event)) { \
892 maxalloc = PAGE_SIZE / sizeof(struct epoll_event); \
893 } else { \
894 maxalloc = maxevents; \
895 } \
896 \
897 if (ret > maxalloc) { \
898 tp_locvar->fds_length = maxalloc; \
899 tp_locvar->overflow = 1; \
900 } else { \
901 tp_locvar->fds_length = ret; \
902 } \
903 \
904 tp_locvar->events = lttng_tp_mempool_alloc( \
905 maxalloc * sizeof(struct epoll_event)); \
906 if (!tp_locvar->events) { \
907 tp_locvar->fds_length = 0; \
908 goto skip_code; \
909 } \
910 \
911 err = lib_ring_buffer_copy_from_user_check_nofault( \
912 tp_locvar->events, uevents, \
913 maxalloc * sizeof(struct epoll_event)); \
914 if (err != 0) \
915 tp_locvar->fds_length = 0; \
916 } \
917 skip_code: \
918 )
919
920 #define LTTNG_SYSCALL_EPOLL_WAIT_fds_field \
921 ctf_custom_field( \
922 ctf_custom_type( \
923 lttng_kernel_static_type_sequence("fds_length", \
924 (const struct lttng_kernel_type_common *) &lttng_epoll_wait_fields_struct, \
925 0, \
926 none) \
927 ), \
928 fds, \
929 ctf_custom_code( \
930 uint32_t i; \
931 \
932 ctf_align(uint64_t) \
933 for (i = 0; i < tp_locvar->fds_length; i++) { \
934 ctf_integer_type(uint64_t, tp_locvar->events[i].data) \
935 ctf_integer_type(int, tp_locvar->events[i].data) \
936 ctf_integer_bitfield_type(uint32_t, \
937 tp_locvar->events[i].events) \
938 ctf_integer_bitfield_type(uint8_t, \
939 (uint8_t) tp_locvar->events[i].events) \
940 } \
941 ) \
942 )
943
944 #define LTTNG_SYSCALL_EPOLL_WAIT_code_post \
945 sc_out( \
946 lttng_tp_mempool_free(tp_locvar->events); \
947 )
948
949
950 #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM)
951 #define OVERRIDE_32_epoll_wait
952 #define OVERRIDE_64_epoll_wait
953 SC_LTTNG_TRACEPOINT_EVENT_CODE(epoll_wait,
954 TP_PROTO(sc_exit(long ret,) int epfd, struct epoll_event __user * uevents,
955 int maxevents, int timeout),
956 TP_ARGS(sc_exit(ret,) epfd, uevents, maxevents, timeout),
957 TP_locvar(
958 LTTNG_SYSCALL_EPOLL_WAIT_locvar
959 ),
960 TP_code_pre(
961 LTTNG_SYSCALL_EPOLL_WAIT_code_pre
962 ),
963 TP_FIELDS(
964 sc_exit(ctf_integer(long, ret, ret))
965 sc_in(ctf_integer(int, epfd, epfd))
966 sc_in(ctf_integer(int, maxevents, maxevents))
967 sc_in(ctf_integer(int, timeout, timeout))
968 sc_out(ctf_integer(unsigned int, fds_length, tp_locvar->fds_length))
969 sc_out(ctf_integer(uint8_t, overflow, tp_locvar->overflow))
970 sc_out(
971 LTTNG_SYSCALL_EPOLL_WAIT_fds_field
972 )
973 ),
974 TP_code_post(
975 LTTNG_SYSCALL_EPOLL_WAIT_code_post
976 )
977 )
978 #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM) */
979
980 #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM)
981 #define OVERRIDE_32_epoll_pwait
982 #define OVERRIDE_64_epoll_pwait
983 SC_LTTNG_TRACEPOINT_EVENT_CODE(epoll_pwait,
984 TP_PROTO(sc_exit(long ret,) int epfd, struct epoll_event __user * uevents,
985 int maxevents, int timeout, const sigset_t __user * sigmask, size_t sigsetsize),
986 TP_ARGS(sc_exit(ret,) epfd, uevents, maxevents, timeout, sigmask, sigsetsize),
987 TP_locvar(
988 LTTNG_SYSCALL_EPOLL_WAIT_locvar
989 ),
990 TP_code_pre(
991 LTTNG_SYSCALL_EPOLL_WAIT_code_pre
992 ),
993 TP_FIELDS(
994 sc_exit(ctf_integer(long, ret, ret))
995 sc_in(ctf_integer(int, epfd, epfd))
996 sc_in(ctf_integer(int, maxevents, maxevents))
997 sc_in(ctf_integer(int, timeout, timeout))
998 sc_in(ctf_integer_hex(const sigset_t *, sigmask, sigmask))
999 sc_in(ctf_integer(size_t, sigsetsize, sigsetsize))
1000 sc_out(ctf_integer(unsigned int, fds_length, tp_locvar->fds_length))
1001 sc_out(ctf_integer(uint8_t, overflow, tp_locvar->overflow))
1002 sc_out(
1003 LTTNG_SYSCALL_EPOLL_WAIT_fds_field
1004 )
1005 ),
1006 TP_code_post(
1007 LTTNG_SYSCALL_EPOLL_WAIT_code_post
1008 )
1009 )
1010 #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */
1011
1012 #if (defined(CONFIG_X86_64) && !defined(LTTNG_SC_COMPAT)) || defined(CONFIG_ARM64) || defined(CONFIG_ARM)
1013 #define OVERRIDE_32_socketpair
1014 #define OVERRIDE_64_socketpair
1015 SC_LTTNG_TRACEPOINT_EVENT(socketpair,
1016 TP_PROTO(sc_exit(long ret,) int family, int type, int protocol, int *usockvec),
1017 TP_ARGS(sc_exit(ret,) family, type, protocol, usockvec),
1018 TP_FIELDS(
1019 sc_exit(ctf_integer(long, ret, ret))
1020 sc_in(ctf_integer(int, family, family))
1021 sc_in(ctf_integer(int, type, type))
1022 sc_in(ctf_integer(int, protocol, protocol))
1023 sc_out(ctf_user_array(int, socket, usockvec, 2))
1024 )
1025 )
1026 #endif /* (defined(CONFIG_X86_64) && !defined(LTTNG_SC_COMPAT)) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */
1027
1028 #ifdef CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM
1029 /*
1030 * Enumeration of the open flags, as described in the 'open'
1031 * system call man page.
1032 */
1033 SC_LTTNG_TRACEPOINT_ENUM(lttng_file_status_flags,
1034 TP_ENUM_VALUES(
1035 ctf_enum_value("O_RDONLY", O_RDONLY)
1036 ctf_enum_value("O_WRONLY", O_WRONLY)
1037 ctf_enum_value("O_RDWR", O_RDWR)
1038 ctf_enum_value("O_CREAT", O_CREAT)
1039 ctf_enum_value("O_EXCL", O_EXCL)
1040 ctf_enum_value("O_NOCTTY", O_NOCTTY)
1041 ctf_enum_value("O_TRUNC", O_TRUNC)
1042 ctf_enum_value("O_APPEND", O_APPEND)
1043 ctf_enum_value("O_NONBLOCK", O_NONBLOCK)
1044 ctf_enum_value("O_DSYNC", O_DSYNC)
1045 ctf_enum_value("FASYNC", FASYNC)
1046 ctf_enum_value("O_DIRECT", O_DIRECT)
1047 ctf_enum_value("O_LARGEFILE", O_LARGEFILE)
1048 ctf_enum_value("O_DIRECTORY", O_DIRECTORY)
1049 ctf_enum_value("O_NOFOLLOW", O_NOFOLLOW)
1050 ctf_enum_value("O_NOATIME", O_NOATIME)
1051 ctf_enum_value("O_CLOEXEC", O_CLOEXEC)
1052 ctf_enum_value("O_SYNC", __O_SYNC)
1053 ctf_enum_value("O_PATH", O_PATH)
1054 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,11,0))
1055 ctf_enum_value("O_TMPFILE", __O_TMPFILE)
1056 #endif /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,11,0)) */
1057 )
1058 )
1059
1060 /*
1061 * Enumeration of the open flags, as described in the 'open'
1062 * system call man page.
1063 */
1064 SC_LTTNG_TRACEPOINT_ENUM(lttng_file_mode,
1065 TP_ENUM_VALUES(
1066 ctf_enum_value("S_IRWXU", S_IRWXU)
1067 ctf_enum_value("S_IRUSR", S_IRUSR)
1068 ctf_enum_value("S_IWUSR", S_IWUSR)
1069 ctf_enum_value("S_IXUSR", S_IXUSR)
1070 ctf_enum_value("S_IRWXG", S_IRWXG)
1071 ctf_enum_value("S_IRGRP", S_IRGRP)
1072 ctf_enum_value("S_IWGRP", S_IWGRP)
1073 ctf_enum_value("S_IXGRP", S_IXGRP)
1074 ctf_enum_value("S_IRWXO", S_IRWXO)
1075 ctf_enum_value("S_IROTH", S_IROTH)
1076 ctf_enum_value("S_IWOTH", S_IWOTH)
1077 ctf_enum_value("S_IXOTH", S_IXOTH)
1078 ctf_enum_value("S_ISUID", S_ISUID)
1079 ctf_enum_value("S_ISGID", S_ISGID)
1080 ctf_enum_value("S_ISVTX", S_ISVTX)
1081 )
1082 )
1083
1084 #define OVERRIDE_32_openat
1085 #define OVERRIDE_64_openat
1086 SC_LTTNG_TRACEPOINT_EVENT(openat,
1087 TP_PROTO(sc_exit(long ret,) int dfd, const char * filename, int flags, umode_t mode),
1088 TP_ARGS(sc_exit(ret,) dfd, filename, flags, mode),
1089 TP_FIELDS(
1090 sc_exit(ctf_integer(long, ret, ret))
1091 sc_in(ctf_integer(int, dfd, dfd))
1092 sc_in(ctf_user_string(filename, filename))
1093 sc_in(ctf_enum(lttng_file_status_flags, int, flags, flags))
1094 sc_in(ctf_enum(lttng_file_mode, umode_t, mode, mode))
1095 )
1096 )
1097
1098 #define OVERRIDE_32_open
1099 #define OVERRIDE_64_open
1100 SC_LTTNG_TRACEPOINT_EVENT(open,
1101 TP_PROTO(sc_exit(long ret,) const char * filename, int flags, umode_t mode),
1102 TP_ARGS(sc_exit(ret,) filename, flags, mode),
1103 TP_FIELDS(
1104 sc_exit(ctf_integer(long, ret, ret))
1105 sc_in(ctf_user_string(filename, filename))
1106 sc_in(ctf_enum(lttng_file_status_flags, int, flags, flags))
1107 sc_in(ctf_enum(lttng_file_mode, umode_t, mode, mode))
1108 )
1109 )
1110 #endif /* CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM */
1111
1112 #endif /* CREATE_SYSCALL_TABLE */
LTTng 2.0/0.x modules
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