Commit | Line | Data |
---|---|---|
e42e81fd MD |
1 | #ifndef CREATE_SYSCALL_TABLE |
2 | ||
769ad370 MD |
3 | #define OVERRIDE_32_execve |
4 | #define OVERRIDE_64_execve | |
cb3ef14c | 5 | SC_LTTNG_TRACEPOINT_EVENT(execve, |
e17f92ba MD |
6 | TP_PROTO(sc_exit(long ret,) const char *filename, char *const *argv, char *const *envp), |
7 | TP_ARGS(sc_exit(ret,) filename, argv, envp), | |
57ede728 MD |
8 | TP_FIELDS(sc_exit(ctf_integer(long, ret, ret)) |
9 | sc_in(ctf_user_string(filename, filename)) | |
10 | sc_in(ctf_integer_hex(char *const *, argv, argv)) | |
11 | sc_in(ctf_integer_hex(char *const *, envp, envp)) | |
12 | ) | |
e42e81fd MD |
13 | ) |
14 | ||
769ad370 MD |
15 | #define OVERRIDE_32_clone |
16 | #define OVERRIDE_64_clone | |
cb3ef14c | 17 | SC_LTTNG_TRACEPOINT_EVENT(clone, |
e17f92ba | 18 | TP_PROTO(sc_exit(long ret,) unsigned long clone_flags, unsigned long newsp, |
ba21566b | 19 | void __user *parent_tid, |
b5aa4b6a | 20 | void __user *child_tid), |
e17f92ba | 21 | TP_ARGS(sc_exit(ret,) clone_flags, newsp, parent_tid, child_tid), |
57ede728 MD |
22 | TP_FIELDS( |
23 | sc_exit(ctf_integer(long, ret, ret)) | |
24 | sc_in(ctf_integer_hex(unsigned long, clone_flags, clone_flags)) | |
25 | sc_in(ctf_integer_hex(unsigned long, newsp, newsp)) | |
26 | sc_in(ctf_integer_hex(void *, parent_tid, parent_tid)) | |
27 | sc_in(ctf_integer_hex(void *, child_tid, child_tid)) | |
28 | ) | |
ba21566b MD |
29 | ) |
30 | ||
b5aa4b6a | 31 | /* present in 32, missing in 64 due to old kernel headers */ |
644d6e9c MD |
32 | #define OVERRIDE_32_getcpu |
33 | #define OVERRIDE_64_getcpu | |
cb3ef14c | 34 | SC_LTTNG_TRACEPOINT_EVENT(getcpu, |
e17f92ba MD |
35 | TP_PROTO(sc_exit(long ret,) unsigned __user *cpup, unsigned __user *nodep, void *tcache), |
36 | TP_ARGS(sc_exit(ret,) cpup, nodep, tcache), | |
57ede728 MD |
37 | TP_FIELDS( |
38 | sc_exit(ctf_integer(long, ret, ret)) | |
39 | sc_out(ctf_integer_hex(unsigned *, cpup, cpup)) | |
40 | sc_out(ctf_integer_hex(unsigned *, nodep, nodep)) | |
41 | sc_inout(ctf_integer_hex(void *, tcache, tcache)) | |
42 | ) | |
b5aa4b6a MD |
43 | ) |
44 | ||
af44bd3a MD |
45 | #define OVERRIDE_32_pipe2 |
46 | #define OVERRIDE_64_pipe2 | |
cb3ef14c | 47 | SC_LTTNG_TRACEPOINT_EVENT(pipe2, |
af44bd3a MD |
48 | TP_PROTO(sc_exit(long ret,) int * fildes, int flags), |
49 | TP_ARGS(sc_exit(ret,) fildes, flags), | |
57ede728 MD |
50 | TP_FIELDS(sc_exit(ctf_integer(long, ret, ret)) |
51 | sc_out(ctf_user_array(int, fildes, fildes, 2)) | |
52 | sc_in(ctf_integer(int, flags, flags)) | |
53 | ) | |
af44bd3a MD |
54 | ) |
55 | ||
29751f7c JD |
56 | #define LTTNG_SYSCALL_SELECT_locvar \ |
57 | unsigned long *fds_in, *fds_out, *fds_ex; \ | |
58 | unsigned long nr_bytes, nr_ulong; \ | |
59 | uint8_t overflow; | |
60 | ||
61 | #define LTTNG_SYSCALL_SELECT_code_pre \ | |
62 | sc_inout( \ | |
63 | { \ | |
64 | int err; \ | |
65 | unsigned int n_in_bytes; \ | |
66 | \ | |
67 | tp_locvar->fds_in = NULL; \ | |
68 | tp_locvar->fds_out = NULL; \ | |
69 | tp_locvar->fds_ex = NULL; \ | |
70 | tp_locvar->overflow = 0; \ | |
71 | \ | |
72 | sc_out( \ | |
73 | if (ret <= 0) \ | |
74 | goto error; \ | |
75 | ) \ | |
76 | \ | |
77 | if (n <= 0) \ | |
78 | goto error; \ | |
79 | \ | |
80 | /* On error or bogus input, don't copy anything. */ \ | |
81 | if (n >__FD_SETSIZE) \ | |
82 | goto error; \ | |
83 | \ | |
84 | n_in_bytes = DIV_ROUND_UP((unsigned int) n, BITS_PER_BYTE); \ | |
85 | \ | |
86 | /* \ | |
87 | * Limit atomic memory allocation to one page, since n \ | |
88 | * is limited to 1024 and the smallest page size on Linux \ | |
89 | * is 4k, this should not happen, don't try to make it work. \ | |
90 | */ \ | |
91 | if (n_in_bytes > PAGE_SIZE) { \ | |
92 | WARN_ON_ONCE(1); \ | |
93 | /* Inform the user that we did not output everything. */ \ | |
94 | tp_locvar->overflow = 1; \ | |
95 | goto error; \ | |
96 | } else { \ | |
97 | tp_locvar->nr_bytes = n_in_bytes; \ | |
98 | tp_locvar->nr_ulong = DIV_ROUND_UP(n_in_bytes, \ | |
99 | sizeof(unsigned long)); \ | |
100 | } \ | |
101 | \ | |
102 | if (inp) { \ | |
103 | tp_locvar->fds_in = kmalloc( \ | |
104 | tp_locvar->nr_ulong * sizeof(unsigned long), \ | |
105 | GFP_ATOMIC | GFP_NOWAIT); \ | |
106 | if (!tp_locvar->fds_in) \ | |
107 | goto error; \ | |
108 | \ | |
109 | err = lib_ring_buffer_copy_from_user_check_nofault( \ | |
110 | tp_locvar->fds_in, inp, \ | |
111 | tp_locvar->nr_ulong * sizeof(unsigned long)); \ | |
112 | if (err != 0) \ | |
113 | goto error; \ | |
114 | } \ | |
115 | if (outp) { \ | |
116 | tp_locvar->fds_out = kmalloc( \ | |
117 | tp_locvar->nr_ulong * sizeof(unsigned long), \ | |
118 | GFP_ATOMIC | GFP_NOWAIT); \ | |
119 | if (!tp_locvar->fds_out) \ | |
120 | goto error; \ | |
121 | \ | |
122 | err = lib_ring_buffer_copy_from_user_check_nofault( \ | |
123 | tp_locvar->fds_out, outp, \ | |
124 | tp_locvar->nr_ulong * sizeof(unsigned long)); \ | |
125 | if (err != 0) \ | |
126 | goto error; \ | |
127 | } \ | |
128 | if (exp) { \ | |
129 | tp_locvar->fds_ex = kmalloc( \ | |
130 | tp_locvar->nr_ulong * sizeof(unsigned long), \ | |
131 | GFP_ATOMIC | GFP_NOWAIT); \ | |
132 | if (!tp_locvar->fds_ex) \ | |
133 | goto error; \ | |
134 | \ | |
135 | err = lib_ring_buffer_copy_from_user_check_nofault( \ | |
136 | tp_locvar->fds_ex, exp, \ | |
137 | tp_locvar->nr_ulong * sizeof(unsigned long)); \ | |
138 | if (err != 0) \ | |
139 | goto error; \ | |
140 | } \ | |
141 | goto end; \ | |
142 | \ | |
143 | error: \ | |
144 | tp_locvar->nr_bytes = 0; \ | |
145 | tp_locvar->nr_ulong = 0; \ | |
146 | end: ; /* Label at end of compound statement. */ \ | |
147 | } \ | |
148 | ) | |
149 | ||
150 | #define LTTNG_SYSCALL_SELECT_fds_field_LE(name, input) \ | |
151 | ctf_custom_field( \ | |
152 | ctf_custom_type( \ | |
153 | .atype = atype_sequence, \ | |
154 | .u.sequence.length_type = __type_integer( \ | |
155 | uint8_t, 0, 0, 0, __BYTE_ORDER, 10, none), \ | |
156 | .u.sequence.elem_type = __type_integer(uint8_t, 0, 0, 0, \ | |
157 | __BYTE_ORDER, 16, none), \ | |
158 | ), \ | |
159 | name, \ | |
160 | ctf_custom_code( \ | |
161 | unsigned int src; \ | |
162 | unsigned int nr_bytes_out = 0; \ | |
163 | \ | |
164 | if (input) { \ | |
165 | ctf_integer_type(uint8_t, tp_locvar->nr_bytes) \ | |
166 | ctf_align(uint8_t) \ | |
167 | } else { \ | |
168 | ctf_integer_type(uint8_t, 0) \ | |
169 | ctf_align(uint8_t) \ | |
170 | goto skip_##name; \ | |
171 | } \ | |
172 | \ | |
173 | for (src = 0; src < tp_locvar->nr_ulong; src++) { \ | |
174 | int dst; \ | |
175 | for (dst = 0; dst < sizeof(long); dst++) { \ | |
176 | if (nr_bytes_out++ >= tp_locvar->nr_bytes) { \ | |
177 | goto skip_##name; \ | |
178 | } \ | |
179 | ctf_user_integer_type(uint8_t, \ | |
180 | ((uint8_t __user *) (input->fds_bits + src))[dst]); \ | |
181 | } \ | |
182 | } \ | |
183 | skip_##name: ; \ | |
184 | ) \ | |
185 | ) | |
186 | ||
187 | #define LTTNG_SYSCALL_SELECT_fds_field_BE(name, input) \ | |
188 | ctf_custom_field( \ | |
189 | ctf_custom_type( \ | |
190 | .atype = atype_sequence, \ | |
191 | .u.sequence.length_type = __type_integer( \ | |
192 | uint8_t, 0, 0, 0, __BYTE_ORDER, 10, none), \ | |
193 | .u.sequence.elem_type = __type_integer(uint8_t, 0, 0, 0, \ | |
194 | __BYTE_ORDER, 16, none), \ | |
195 | ), \ | |
196 | name, \ | |
197 | ctf_custom_code( \ | |
198 | unsigned int src, nr_bytes_out = 0; \ | |
199 | \ | |
200 | if (input) { \ | |
201 | ctf_integer_type(uint8_t, tp_locvar->nr_bytes) \ | |
202 | ctf_align(uint8_t) \ | |
203 | } else { \ | |
204 | ctf_integer_type(uint8_t, 0) \ | |
205 | ctf_align(uint8_t) \ | |
206 | goto skip_##name; \ | |
207 | } \ | |
208 | \ | |
209 | for (src = 0; src < tp_locvar->nr_ulong; src++) { \ | |
210 | int dst; \ | |
211 | for (dst = sizeof(long); dst >= 0; dst--) { \ | |
212 | if (nr_bytes_out++ >= tp_locvar->nr_bytes) { \ | |
213 | goto skip_##name; \ | |
214 | } \ | |
215 | ctf_user_integer_type(uint8_t, \ | |
216 | ((uint8_t __user *) (input->fds_bits + src))[dst]); \ | |
217 | } \ | |
218 | } \ | |
219 | skip_##name: ; \ | |
220 | ) \ | |
221 | ) | |
222 | ||
223 | #define LTTNG_SYSCALL_SELECT_code_post \ | |
224 | kfree(tp_locvar->fds_in); \ | |
225 | kfree(tp_locvar->fds_out); \ | |
226 | kfree(tp_locvar->fds_ex); | |
227 | ||
228 | #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) | |
229 | #define OVERRIDE_32_select | |
230 | #define OVERRIDE_64_select | |
231 | SC_LTTNG_TRACEPOINT_EVENT_CODE(select, | |
232 | TP_PROTO(sc_exit(long ret,) int n, fd_set __user *inp, fd_set __user *outp, | |
233 | fd_set __user *exp, struct timeval *tvp), | |
234 | TP_ARGS(sc_exit(ret,) n, inp, outp, exp, tvp), | |
235 | TP_locvar( | |
236 | LTTNG_SYSCALL_SELECT_locvar | |
237 | ), | |
238 | TP_code_pre( | |
239 | LTTNG_SYSCALL_SELECT_code_pre | |
240 | ), | |
241 | TP_FIELDS( | |
242 | sc_exit(ctf_integer(long, ret, ret)) | |
243 | sc_in(ctf_integer(int, n, n)) | |
244 | sc_inout(ctf_integer(uint8_t, overflow, tp_locvar->overflow)) | |
245 | sc_inout(ctf_integer(struct timeval *, tvp, tvp)) | |
246 | ||
247 | sc_inout( | |
248 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) | |
249 | LTTNG_SYSCALL_SELECT_fds_field_LE(readfds, inp) | |
250 | LTTNG_SYSCALL_SELECT_fds_field_LE(writefds, outp) | |
251 | LTTNG_SYSCALL_SELECT_fds_field_LE(exceptfds, exp) | |
252 | #else | |
253 | LTTNG_SYSCALL_SELECT_fds_field_BE(readfds, inp) | |
254 | LTTNG_SYSCALL_SELECT_fds_field_BE(writefds, outp) | |
255 | LTTNG_SYSCALL_SELECT_fds_field_BE(exceptfds, exp) | |
256 | #endif | |
257 | ) | |
258 | ), | |
259 | TP_code_post( | |
260 | LTTNG_SYSCALL_SELECT_code_post | |
261 | ) | |
262 | ) | |
263 | #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) */ | |
264 | ||
265 | #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) | |
266 | #define OVERRIDE_32_pselect6 | |
267 | #define OVERRIDE_64_pselect6 | |
268 | SC_LTTNG_TRACEPOINT_EVENT_CODE(pselect6, | |
269 | TP_PROTO(sc_exit(long ret,) int n, fd_set __user * inp, fd_set __user * outp, | |
270 | fd_set __user * exp, struct timeval __user * tvp, void __user * sig), | |
271 | TP_ARGS(sc_exit(ret,) n, inp, outp, exp, tvp, sig), | |
272 | TP_locvar( | |
273 | LTTNG_SYSCALL_SELECT_locvar | |
274 | ), | |
275 | TP_code_pre( | |
276 | LTTNG_SYSCALL_SELECT_code_pre | |
277 | ), | |
278 | TP_FIELDS( | |
279 | sc_exit(ctf_integer(long, ret, ret)) | |
280 | sc_in(ctf_integer(int, n, n)) | |
281 | sc_inout(ctf_integer(uint8_t, overflow, tp_locvar->overflow)) | |
282 | sc_inout(ctf_integer(struct timeval *, tvp, tvp)) | |
283 | sc_in(ctf_integer_hex(void *, sig, sig)) | |
284 | ||
285 | sc_inout( | |
286 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) | |
287 | LTTNG_SYSCALL_SELECT_fds_field_LE(readfds, inp) | |
288 | LTTNG_SYSCALL_SELECT_fds_field_LE(writefds, outp) | |
289 | LTTNG_SYSCALL_SELECT_fds_field_LE(exceptfds, exp) | |
290 | #else | |
291 | LTTNG_SYSCALL_SELECT_fds_field_BE(readfds, inp) | |
292 | LTTNG_SYSCALL_SELECT_fds_field_BE(writefds, outp) | |
293 | LTTNG_SYSCALL_SELECT_fds_field_BE(exceptfds, exp) | |
294 | #endif | |
295 | ) | |
296 | ), | |
297 | TP_code_post( | |
298 | LTTNG_SYSCALL_SELECT_code_post | |
299 | ) | |
300 | ) | |
301 | #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */ | |
302 | ||
6a2ecd2e JD |
303 | #ifndef ONCE_LTTNG_TRACE_POLL_H |
304 | #define ONCE_LTTNG_TRACE_POLL_H | |
305 | ||
306 | #define LTTNG_POLL_NRFLAGS (POLLNVAL + 1) | |
307 | #define POLL_FLAGS_PADDING_SIZE (sizeof(uint8_t) * BITS_PER_BYTE) - \ | |
308 | ilog2(LTTNG_POLL_NRFLAGS - 1) | |
309 | ||
310 | /* | |
311 | * Only extract the values specified by iBCS2 for now. | |
312 | */ | |
313 | static struct lttng_event_field lttng_pollfd_flag_fields[] = { | |
314 | [ilog2(POLLIN)] = { | |
315 | .name = "POLLIN", | |
316 | .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none), | |
317 | }, | |
318 | [ilog2(POLLPRI)] = { | |
319 | .name = "POLLPRI", | |
320 | .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none), | |
321 | }, | |
322 | [ilog2(POLLOUT)] = { | |
323 | .name = "POLLOUT", | |
324 | .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none), | |
325 | }, | |
326 | [ilog2(POLLERR)] = { | |
327 | .name = "POLLERR", | |
328 | .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none), | |
329 | }, | |
330 | [ilog2(POLLHUP)] = { | |
331 | .name = "POLLHUP", | |
332 | .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none), | |
333 | }, | |
334 | [ilog2(POLLNVAL)] = { | |
335 | .name = "POLLNVAL", | |
336 | .type = __type_integer(int, 1, 1, 0, __LITTLE_ENDIAN, 10, none), | |
337 | }, | |
338 | [ilog2(LTTNG_POLL_NRFLAGS)] = { | |
339 | .name = "padding", | |
340 | .type = __type_integer(int, POLL_FLAGS_PADDING_SIZE, 1, 0, | |
341 | __LITTLE_ENDIAN, 10, none), | |
342 | }, | |
343 | }; | |
344 | ||
345 | static struct lttng_event_field lttng_pollfd_fields[] = { | |
346 | [0] = { | |
347 | .name = "fd", | |
348 | .type = __type_integer(int, 0, 0, 0, __BYTE_ORDER, 10, none), | |
349 | }, | |
350 | [1] = { | |
351 | .name = "raw_events", | |
352 | .type = __type_integer(short, 0, 0, 0, __BYTE_ORDER, 16, none), | |
353 | }, | |
354 | [2] = { | |
355 | .name = "events", | |
356 | .type = { | |
357 | .atype = atype_struct, | |
358 | .u._struct.nr_fields = ARRAY_SIZE(lttng_pollfd_flag_fields), | |
359 | .u._struct.fields = lttng_pollfd_flag_fields, | |
360 | } | |
361 | }, | |
362 | }; | |
363 | ||
364 | static struct lttng_type lttng_pollfd_elem = { | |
365 | .atype = atype_struct, | |
366 | .u._struct.nr_fields = ARRAY_SIZE(lttng_pollfd_fields), | |
367 | .u._struct.fields = lttng_pollfd_fields, | |
368 | }; | |
369 | #endif /* ONCE_LTTNG_TRACE_POLL_H */ | |
370 | ||
371 | #define LTTNG_SYSCALL_POLL_locvar \ | |
372 | unsigned int fds_length, fds_max_len, alloc_fds; \ | |
373 | struct pollfd *fds; \ | |
374 | uint8_t overflow; | |
375 | ||
376 | #define LTTNG_SYSCALL_POLL_code_pre \ | |
377 | BUILD_BUG_ON(((ARRAY_SIZE(lttng_pollfd_flag_fields) - 1) + \ | |
378 | POLL_FLAGS_PADDING_SIZE) != \ | |
379 | sizeof(uint8_t) * BITS_PER_BYTE); \ | |
380 | tp_locvar->fds = NULL; \ | |
381 | tp_locvar->overflow = 0; \ | |
382 | \ | |
383 | sc_in( \ | |
384 | if (nfds > PAGE_SIZE / sizeof(struct pollfd)) { \ | |
385 | tp_locvar->fds_length = PAGE_SIZE / sizeof(struct pollfd); \ | |
386 | tp_locvar->fds_max_len = PAGE_SIZE / sizeof(struct pollfd); \ | |
387 | tp_locvar->overflow = 1; \ | |
388 | } else { \ | |
389 | tp_locvar->fds_length = nfds; \ | |
390 | tp_locvar->fds_max_len = nfds; \ | |
391 | } \ | |
392 | tp_locvar->alloc_fds = tp_locvar->fds_length * sizeof(struct pollfd); \ | |
393 | ) \ | |
394 | /* \ | |
395 | * On exit, the number of active FDs is determined by ret, \ | |
396 | * nfds stays the same as the entry, but we only want to \ | |
397 | * output the FDs that are relevant. \ | |
398 | */ \ | |
399 | sc_out( \ | |
400 | if (ret <= 0 || ret > nfds) \ | |
401 | goto error; \ | |
402 | \ | |
403 | if (nfds > PAGE_SIZE / sizeof(struct pollfd)) { \ | |
404 | tp_locvar->fds_length = PAGE_SIZE / sizeof(struct pollfd); \ | |
405 | tp_locvar->fds_max_len = PAGE_SIZE / sizeof(struct pollfd); \ | |
406 | tp_locvar->overflow = 1; \ | |
407 | } else { \ | |
408 | tp_locvar->fds_length = ret; \ | |
409 | tp_locvar->fds_max_len = nfds; \ | |
410 | } \ | |
411 | tp_locvar->alloc_fds = tp_locvar->fds_max_len * sizeof(struct pollfd); \ | |
412 | ) \ | |
413 | { \ | |
414 | int err; \ | |
415 | \ | |
416 | tp_locvar->fds = kmalloc(tp_locvar->alloc_fds, \ | |
417 | GFP_ATOMIC | GFP_NOWAIT); \ | |
418 | if (!tp_locvar->fds) \ | |
419 | goto error; \ | |
420 | err = lib_ring_buffer_copy_from_user_check_nofault( \ | |
421 | tp_locvar->fds, ufds, \ | |
422 | nfds * sizeof(struct pollfd)); \ | |
423 | if (err != 0) \ | |
424 | goto error; \ | |
425 | } \ | |
426 | goto end; \ | |
427 | \ | |
428 | error: \ | |
429 | tp_locvar->fds_length = 0; \ | |
430 | tp_locvar->fds_max_len = 0; \ | |
431 | end: \ | |
432 | ; | |
433 | ||
434 | #define LTTNG_SYSCALL_POLL_fds_field \ | |
435 | sc_in( \ | |
436 | ctf_custom_field( \ | |
437 | ctf_custom_type( \ | |
438 | .atype = atype_sequence_compound, \ | |
439 | .u.sequence_compound.length_name = "fds_length", \ | |
440 | .u.sequence_compound.elem_type = <tng_pollfd_elem, \ | |
441 | ), \ | |
442 | fds, \ | |
443 | ctf_custom_code( \ | |
444 | uint32_t i; \ | |
445 | \ | |
446 | ctf_align(int) /* Align on largest field in struct. */ \ | |
447 | for (i = 0; i < tp_locvar->fds_length; i++) { \ | |
448 | ctf_integer_type(int, tp_locvar->fds[i].fd) \ | |
449 | ctf_integer_type(short, tp_locvar->fds[i].events) \ | |
450 | ctf_integer_bitfield_type(uint8_t, \ | |
451 | (uint8_t) tp_locvar->fds[i].events) \ | |
452 | } \ | |
453 | ) \ | |
454 | ) \ | |
455 | ) \ | |
456 | sc_out( \ | |
457 | ctf_custom_field( \ | |
458 | ctf_custom_type( \ | |
459 | .atype = atype_sequence_compound, \ | |
460 | .u.sequence_compound.length_name = "fds_length", \ | |
461 | .u.sequence_compound.elem_type = <tng_pollfd_elem, \ | |
462 | ), \ | |
463 | fds, \ | |
464 | ctf_custom_code( \ | |
465 | unsigned int i, nr = 0; \ | |
466 | \ | |
467 | ctf_align(int) /* Align on largest field in struct. */ \ | |
468 | /* \ | |
469 | * Iterate over the complete array, but only output \ | |
470 | * "ret" active FDs. \ | |
471 | */ \ | |
472 | for (i = 0; i < tp_locvar->fds_max_len; i++) { \ | |
473 | if (!tp_locvar->fds[i].revents) \ | |
474 | continue; \ | |
475 | if (nr++ >= tp_locvar->fds_length) \ | |
476 | break; \ | |
477 | ctf_integer_type(int, tp_locvar->fds[i].fd) \ | |
478 | ctf_integer_type(short, tp_locvar->fds[i].revents) \ | |
479 | ctf_integer_bitfield_type(uint8_t, \ | |
480 | (uint8_t) tp_locvar->fds[i].revents) \ | |
481 | } \ | |
482 | /* \ | |
483 | * If there is a discrepancy between ret and the \ | |
484 | * content of revents (e.g. caused by userspace corrupting \ | |
485 | * the array from a concurrent thread), we have to output \ | |
486 | * zeros to keep the trace readable. \ | |
487 | */ \ | |
488 | for (i = nr; i < tp_locvar->fds_length; i++) { \ | |
489 | ctf_integer_type(int, 0) \ | |
490 | ctf_integer_type(short, 0) \ | |
491 | ctf_integer_bitfield_type(uint8_t, 0) \ | |
492 | } \ | |
493 | ) \ | |
494 | ) \ | |
495 | ) | |
496 | ||
497 | #define LTTNG_SYSCALL_POLL_code_post \ | |
498 | kfree(tp_locvar->fds); | |
499 | ||
500 | #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) | |
501 | #define OVERRIDE_32_poll | |
502 | #define OVERRIDE_64_poll | |
503 | SC_LTTNG_TRACEPOINT_EVENT_CODE(poll, | |
504 | TP_PROTO(sc_exit(long ret,) struct pollfd __user * ufds, | |
505 | unsigned int nfds, int timeout_msecs), | |
506 | TP_ARGS(sc_exit(ret,) ufds, nfds, timeout_msecs), | |
507 | TP_locvar( | |
508 | LTTNG_SYSCALL_POLL_locvar | |
509 | ), | |
510 | TP_code_pre( | |
511 | LTTNG_SYSCALL_POLL_code_pre | |
512 | ), | |
513 | TP_FIELDS( | |
514 | sc_exit(ctf_integer(long, ret, ret)) | |
515 | sc_in(ctf_integer(int, timeout_msecs, timeout_msecs)) | |
516 | sc_inout(ctf_integer(unsigned int, nfds, nfds)) | |
517 | sc_inout(ctf_integer(unsigned int, fds_length, tp_locvar->fds_length)) | |
518 | sc_in(ctf_integer(uint8_t, overflow, tp_locvar->overflow)) | |
519 | LTTNG_SYSCALL_POLL_fds_field | |
520 | ), | |
521 | TP_code_post( | |
522 | LTTNG_SYSCALL_POLL_code_post | |
523 | ) | |
524 | ) | |
525 | #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) */ | |
526 | ||
527 | #if defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) | |
528 | #define OVERRIDE_32_ppoll | |
529 | #define OVERRIDE_64_ppoll | |
530 | SC_LTTNG_TRACEPOINT_EVENT_CODE(ppoll, | |
531 | TP_PROTO(sc_exit(long ret,) struct pollfd __user * ufds, | |
532 | unsigned int nfds, struct timespec * tsp, const sigset_t * sigmask, size_t sigsetsize), | |
533 | TP_ARGS(sc_exit(ret,) ufds, nfds, tsp, sigmask, sigsetsize), | |
534 | TP_locvar( | |
535 | LTTNG_SYSCALL_POLL_locvar | |
536 | ), | |
537 | TP_code_pre( | |
538 | LTTNG_SYSCALL_POLL_code_pre | |
539 | ), | |
540 | TP_FIELDS( | |
541 | sc_exit(ctf_integer(long, ret, ret)) | |
542 | sc_in(ctf_integer(struct timespec *, tsp, tsp)) | |
543 | sc_in(ctf_integer(const sigset_t *, sigmask, sigmask)) | |
544 | sc_in(ctf_integer(size_t, sigsetsize, sigsetsize)) | |
545 | sc_inout(ctf_integer(unsigned int, nfds, nfds)) | |
546 | sc_inout(ctf_integer(unsigned int, fds_length, tp_locvar->fds_length)) | |
547 | sc_inout(ctf_integer(uint8_t, overflow, tp_locvar->overflow)) | |
548 | LTTNG_SYSCALL_POLL_fds_field | |
549 | ), | |
550 | TP_code_post( | |
551 | LTTNG_SYSCALL_POLL_code_post | |
552 | ) | |
553 | ) | |
554 | #endif /* defined(CONFIG_X86_32) || defined(CONFIG_X86_64) || defined(CONFIG_ARM64) || defined(CONFIG_ARM) */ | |
555 | ||
e42e81fd | 556 | #endif /* CREATE_SYSCALL_TABLE */ |