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f4b28491 | 1 | // systemtap translator/driver |
9abec538 | 2 | // Copyright (C) 2005-2007 Red Hat Inc. |
f12b2552 | 3 | // Copyright (C) 2005 IBM Corp. |
77a5c1f9 | 4 | // Copyright (C) 2006 Intel Corporation. |
69c68955 FCE |
5 | // |
6 | // This file is part of systemtap, and is free software. You can | |
7 | // redistribute it and/or modify it under the terms of the GNU General | |
8 | // Public License (GPL); either version 2, or (at your option) any | |
9 | // later version. | |
2b066ec1 FCE |
10 | |
11 | #include "config.h" | |
12 | #include "staptree.h" | |
13 | #include "parse.h" | |
14 | #include "elaborate.h" | |
15 | #include "translate.h" | |
f4b28491 | 16 | #include "buildrun.h" |
dc38c0ae | 17 | #include "session.h" |
1b78aef5 DS |
18 | #include "hash.h" |
19 | #include "cache.h" | |
20 | #include "util.h" | |
2b066ec1 FCE |
21 | |
22 | #include <iostream> | |
23 | #include <fstream> | |
24 | #include <sstream> | |
f4b28491 | 25 | #include <cerrno> |
24cb178f | 26 | #include <cstdlib> |
2b066ec1 FCE |
27 | |
28 | extern "C" { | |
29 | #include <glob.h> | |
30 | #include <unistd.h> | |
f4b28491 | 31 | #include <sys/utsname.h> |
5ee1c56b | 32 | #include <sys/times.h> |
1d738eed | 33 | #include <sys/time.h> |
f59e98c4 | 34 | #include <sys/stat.h> |
f4b28491 | 35 | #include <time.h> |
f8949662 | 36 | #include <elfutils/libdwfl.h> |
2b066ec1 FCE |
37 | } |
38 | ||
39 | using namespace std; | |
40 | ||
41 | ||
f4b28491 | 42 | void |
c0de7a8d | 43 | version () |
2b066ec1 | 44 | { |
d54d4661 | 45 | clog |
d04cf5ff | 46 | << "SystemTap translator/driver " |
c4a94c1a FCE |
47 | << "(version " << VERSION << "/" << dwfl_version (NULL) |
48 | << " built " << DATE << ")" << endl | |
5212330d | 49 | << "Copyright (C) 2005-2007 Red Hat, Inc. and others" << endl |
f8949662 | 50 | << "This is free software; see the source for copying conditions." << endl; |
c0de7a8d FCE |
51 | } |
52 | ||
53 | void | |
277c1957 | 54 | usage (systemtap_session& s, int exitcode) |
c0de7a8d FCE |
55 | { |
56 | version (); | |
57 | clog | |
f4b28491 | 58 | << endl |
b2d5d95c | 59 | << "Usage: stap [options] FILE Run script in file." |
f4b28491 | 60 | << endl |
b2d5d95c | 61 | << " or: stap [options] - Run script on stdin." |
f4b28491 | 62 | << endl |
d54d4661 | 63 | << " or: stap [options] -e SCRIPT Run given script." |
f4b28491 FCE |
64 | << endl |
65 | << endl | |
c0de7a8d | 66 | << "Options:" << endl |
f4b28491 | 67 | << " -- no more options after this" << endl |
b0ee93c4 | 68 | << " -v increase verbosity [" << s.verbose << "]" << endl |
c0de7a8d FCE |
69 | << " -h show help" << endl |
70 | << " -V show version" << endl | |
d5d7c2cc | 71 | << " -k keep temporary directory" << endl |
cbfbbf69 | 72 | << " -u unoptimized translation" << (s.unoptimized ? " [set]" : "") << endl |
377b8831 | 73 | << " -g guru mode" << (s.guru_mode ? " [set]" : "") << endl |
44f75386 FCE |
74 | << " -P prologue-searching for function probes" |
75 | << (s.prologue_searching ? " [set]" : "") << endl | |
6dfd08d7 | 76 | << " -b bulk (percpu file) mode" << (s.bulk_mode ? " [set]" : "") << endl |
177a8ead FCE |
77 | << " -s NUM buffer size in megabytes, instead of " |
78 | << s.buffer_size << endl | |
f8949662 | 79 | << " -p NUM stop after pass NUM 1-5, instead of " |
177a8ead | 80 | << s.last_pass << endl |
f4b28491 FCE |
81 | << " (parse, elaborate, translate, compile, run)" << endl |
82 | << " -I DIR look in DIR for additional .stp script files"; | |
83 | if (s.include_path.size() == 0) | |
0d49d7bc | 84 | clog << endl; |
f4b28491 | 85 | else |
24cb178f | 86 | clog << ", in addition to" << endl; |
f4b28491 | 87 | for (unsigned i=0; i<s.include_path.size(); i++) |
0d49d7bc FCE |
88 | clog << " " << s.include_path[i] << endl; |
89 | clog | |
ed10c639 | 90 | << " -D NM=VAL emit macro definition into generated C code" << endl |
24cb178f FCE |
91 | << " -R DIR look in DIR for runtime, instead of" << endl |
92 | << " " << s.runtime_path << endl | |
b8da0ad1 | 93 | << " -r RELEASE cross-compile to kernel RELEASE, instead of " |
177a8ead | 94 | << s.kernel_release << endl |
f12b2552 FCE |
95 | << " -m MODULE set probe module name, instead of " |
96 | << s.module_name << endl | |
177a8ead | 97 | << " -o FILE send output to file, instead of stdout" << endl |
f8949662 | 98 | << " -c CMD start the probes, run CMD, and exit when it finishes" |
f12b2552 | 99 | << endl |
4c5ff1bb | 100 | << " -x PID sets target() to PID" << endl |
cbd6fc7b | 101 | << " -t collect probe timing information" << endl |
d5d7c2cc | 102 | ; |
d54d4661 | 103 | // -d: dump safety-related external references |
2b066ec1 | 104 | |
277c1957 | 105 | exit (exitcode); |
2b066ec1 FCE |
106 | } |
107 | ||
108 | ||
1b78aef5 DS |
109 | static void |
110 | printscript(systemtap_session& s, ostream& o) | |
111 | { | |
83d7fcdc DS |
112 | if (s.embeds.size() > 0) |
113 | o << "# global embedded code" << endl; | |
114 | for (unsigned i=0; i<s.embeds.size(); i++) | |
115 | { | |
116 | embeddedcode* ec = s.embeds[i]; | |
117 | ec->print (o); | |
118 | o << endl; | |
119 | } | |
120 | ||
1b78aef5 DS |
121 | if (s.globals.size() > 0) |
122 | o << "# globals" << endl; | |
123 | for (unsigned i=0; i<s.globals.size(); i++) | |
124 | { | |
125 | vardecl* v = s.globals[i]; | |
126 | v->printsig (o); | |
9ba8c134 JS |
127 | if (s.verbose && v->init) |
128 | { | |
129 | o << " = "; | |
130 | v->init->print(o); | |
131 | } | |
1b78aef5 DS |
132 | o << endl; |
133 | } | |
134 | ||
135 | if (s.functions.size() > 0) | |
136 | o << "# functions" << endl; | |
137 | for (unsigned i=0; i<s.functions.size(); i++) | |
138 | { | |
139 | functiondecl* f = s.functions[i]; | |
140 | f->printsig (o); | |
141 | o << endl; | |
142 | if (f->locals.size() > 0) | |
143 | o << " # locals" << endl; | |
144 | for (unsigned j=0; j<f->locals.size(); j++) | |
145 | { | |
146 | vardecl* v = f->locals[j]; | |
147 | o << " "; | |
148 | v->printsig (o); | |
149 | o << endl; | |
150 | } | |
151 | if (s.verbose) | |
152 | { | |
153 | f->body->print (o); | |
154 | o << endl; | |
155 | } | |
156 | } | |
157 | ||
158 | if (s.probes.size() > 0) | |
159 | o << "# probes" << endl; | |
160 | for (unsigned i=0; i<s.probes.size(); i++) | |
161 | { | |
162 | derived_probe* p = s.probes[i]; | |
163 | p->printsig (o); | |
164 | o << endl; | |
165 | if (p->locals.size() > 0) | |
166 | o << " # locals" << endl; | |
167 | for (unsigned j=0; j<p->locals.size(); j++) | |
168 | { | |
169 | vardecl* v = p->locals[j]; | |
170 | o << " "; | |
171 | v->printsig (o); | |
172 | o << endl; | |
173 | } | |
174 | if (s.verbose) | |
175 | { | |
176 | p->body->print (o); | |
177 | o << endl; | |
178 | } | |
179 | } | |
180 | } | |
181 | ||
2b066ec1 FCE |
182 | int |
183 | main (int argc, char * const argv []) | |
184 | { | |
2b066ec1 FCE |
185 | string cmdline_script; // -e PROGRAM |
186 | string script_file; // FILE | |
187 | bool have_script = false; | |
ea3f75ae | 188 | bool release_changed = false; |
f4b28491 FCE |
189 | |
190 | // Initialize defaults | |
191 | systemtap_session s; | |
192 | struct utsname buf; | |
193 | (void) uname (& buf); | |
194 | s.kernel_release = string (buf.release); | |
44ce8ed5 | 195 | s.architecture = string (buf.machine); |
b0ee93c4 | 196 | s.verbose = 0; |
4b17d6af | 197 | s.timing = 0; |
377b8831 | 198 | s.guru_mode = false; |
16d8de1b | 199 | s.bulk_mode = false; |
cbfbbf69 | 200 | s.unoptimized = false; |
44f75386 FCE |
201 | |
202 | #ifdef ENABLE_PROLOGUES | |
203 | s.prologue_searching = true; | |
204 | #else | |
205 | s.prologue_searching = false; | |
206 | #endif | |
207 | ||
16d8de1b | 208 | s.buffer_size = 0; |
f4b28491 | 209 | s.last_pass = 5; |
ae24723e | 210 | s.module_name = "stap_" + stringify(getpid()); |
08c68653 | 211 | s.output_file = ""; // -o FILE |
f4b28491 | 212 | s.keep_tmpdir = false; |
4c5ff1bb MH |
213 | s.cmd = ""; |
214 | s.target_pid = 0; | |
f272aacc | 215 | s.merge=true; |
47dd066d | 216 | s.perfmon=0; |
f1bad60c | 217 | s.symtab = false; |
1b78aef5 | 218 | s.use_cache = true; |
24cb178f FCE |
219 | |
220 | const char* s_p = getenv ("SYSTEMTAP_TAPSET"); | |
ec819dc3 LG |
221 | if (s_p != NULL) |
222 | { | |
24cb178f | 223 | s.include_path.push_back (s_p); |
ec819dc3 LG |
224 | s.include_path.push_back (string(s_p) + "/LKET"); |
225 | } | |
24cb178f | 226 | else |
ec819dc3 | 227 | { |
24cb178f | 228 | s.include_path.push_back (string(PKGDATADIR) + "/tapset"); |
ec819dc3 LG |
229 | s.include_path.push_back (string(PKGDATADIR) + "/tapset/LKET"); |
230 | } | |
24cb178f FCE |
231 | |
232 | const char* s_r = getenv ("SYSTEMTAP_RUNTIME"); | |
233 | if (s_r != NULL) | |
234 | s.runtime_path = s_r; | |
235 | else | |
236 | s.runtime_path = string(PKGDATADIR) + "/runtime"; | |
f4b28491 | 237 | |
1b78aef5 DS |
238 | const char* s_d = getenv ("SYSTEMTAP_DIR"); |
239 | if (s_d != NULL) | |
240 | s.data_path = s_d; | |
241 | else | |
242 | s.data_path = get_home_directory() + string("/.systemtap"); | |
243 | if (create_dir(s.data_path.c_str()) == 1) | |
244 | { | |
245 | const char* e = strerror (errno); | |
246 | cerr << "Warning: failed to create systemtap data directory (\"" | |
247 | << s.data_path << "\"): " << e << endl; | |
248 | cerr << "Disabling cache support." << endl; | |
249 | s.use_cache = false; | |
250 | } | |
251 | ||
252 | if (s.use_cache) | |
253 | { | |
254 | s.cache_path = s.data_path + "/cache"; | |
255 | if (create_dir(s.cache_path.c_str()) == 1) | |
256 | { | |
257 | const char* e = strerror (errno); | |
258 | cerr << "Warning: failed to create cache directory (\"" | |
259 | << s.cache_path << "\"): " << e << endl; | |
260 | cerr << "Disabling cache support." << endl; | |
261 | s.use_cache = false; | |
262 | } | |
263 | } | |
264 | ||
2b066ec1 FCE |
265 | while (true) |
266 | { | |
44f75386 FCE |
267 | // NB: also see find_hash(), help(), switch stmt below, stap.1 man page |
268 | int grc = getopt (argc, argv, "hVMvtp:I:e:o:R:r:m:kgPc:x:D:bs:u"); | |
2b066ec1 FCE |
269 | if (grc < 0) |
270 | break; | |
271 | switch (grc) | |
272 | { | |
c0de7a8d FCE |
273 | case 'V': |
274 | version (); | |
275 | exit (0); | |
276 | ||
f272aacc LG |
277 | case 'M': |
278 | s.merge = false; | |
279 | break; | |
280 | ||
bd2b1e68 | 281 | case 'v': |
b0ee93c4 | 282 | s.verbose ++; |
bd2b1e68 GH |
283 | break; |
284 | ||
4b17d6af WC |
285 | case 't': |
286 | s.timing ++; | |
287 | break; | |
288 | ||
2b066ec1 | 289 | case 'p': |
f4b28491 FCE |
290 | s.last_pass = atoi (optarg); |
291 | if (s.last_pass < 1 || s.last_pass > 5) | |
2b066ec1 | 292 | { |
277c1957 DS |
293 | cerr << "Invalid pass number (should be 1-5)." << endl; |
294 | usage (s, 1); | |
2b066ec1 FCE |
295 | } |
296 | break; | |
297 | ||
298 | case 'I': | |
f4b28491 | 299 | s.include_path.push_back (string (optarg)); |
2b066ec1 FCE |
300 | break; |
301 | ||
302 | case 'e': | |
303 | if (have_script) | |
277c1957 DS |
304 | { |
305 | cerr << "Only one script can be given on the command line." | |
306 | << endl; | |
307 | usage (s, 1); | |
308 | } | |
2b066ec1 FCE |
309 | cmdline_script = string (optarg); |
310 | have_script = true; | |
311 | break; | |
312 | ||
313 | case 'o': | |
08c68653 | 314 | s.output_file = string (optarg); |
2b066ec1 FCE |
315 | break; |
316 | ||
f4b28491 FCE |
317 | case 'R': |
318 | s.runtime_path = string (optarg); | |
319 | break; | |
320 | ||
321 | case 'm': | |
322 | s.module_name = string (optarg); | |
3b942fed DS |
323 | { |
324 | string::size_type len = s.module_name.length(); | |
325 | ||
326 | // If the module name ends with '.ko', chop it off since | |
327 | // modutils doesn't like modules named 'foo.ko.ko'. | |
328 | if (len > 3 && s.module_name.substr(len - 3, 3) == ".ko") | |
329 | { | |
330 | s.module_name.erase(len - 3); | |
331 | len -= 3; | |
332 | cerr << "Truncating module name to '" << s.module_name | |
333 | << "'" << endl; | |
334 | } | |
335 | ||
336 | // Make sure an empty module name wasn't specified (-m "") | |
337 | if (len == 0) | |
338 | { | |
339 | cerr << "Module name cannot be empty." << endl; | |
340 | usage (s, 1); | |
341 | } | |
342 | ||
343 | // Make sure the module name is only composed of the | |
344 | // following chars: [_a-zA-Z0-9] | |
345 | const string identchars("_" "abcdefghijklmnopqrstuvwxyz" | |
346 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "0123456789"); | |
347 | if (s.module_name.find_first_not_of(identchars) != string::npos) | |
348 | { | |
349 | cerr << "Invalid module name (must only be composed of" | |
350 | " characters [_a-zA-Z0-9])." << endl; | |
351 | usage (s, 1); | |
352 | } | |
353 | } | |
354 | ||
1b78aef5 DS |
355 | cerr << "Warning: using '-m' disables cache support." << endl; |
356 | s.use_cache = false; | |
f4b28491 FCE |
357 | break; |
358 | ||
359 | case 'r': | |
360 | s.kernel_release = string (optarg); | |
ea3f75ae | 361 | release_changed = true; |
f4b28491 FCE |
362 | break; |
363 | ||
364 | case 'k': | |
365 | s.keep_tmpdir = true; | |
366 | break; | |
367 | ||
377b8831 FCE |
368 | case 'g': |
369 | s.guru_mode = true; | |
370 | break; | |
371 | ||
44f75386 FCE |
372 | case 'P': |
373 | s.prologue_searching = true; | |
374 | break; | |
375 | ||
16d8de1b TZ |
376 | case 'b': |
377 | s.bulk_mode = true; | |
16d8de1b TZ |
378 | break; |
379 | ||
cbfbbf69 FCE |
380 | case 'u': |
381 | s.unoptimized = true; | |
382 | break; | |
383 | ||
16d8de1b TZ |
384 | case 's': |
385 | s.buffer_size = atoi (optarg); | |
386 | if (s.buffer_size < 1 || s.buffer_size > 64) | |
387 | { | |
277c1957 DS |
388 | cerr << "Invalid buffer size (should be 1-64)." << endl; |
389 | usage (s, 1); | |
16d8de1b TZ |
390 | } |
391 | break; | |
392 | ||
4c5ff1bb MH |
393 | case 'c': |
394 | s.cmd = string (optarg); | |
395 | break; | |
396 | ||
397 | case 'x': | |
398 | s.target_pid = atoi(optarg); | |
399 | break; | |
400 | ||
ed10c639 FCE |
401 | case 'D': |
402 | s.macros.push_back (string (optarg)); | |
403 | break; | |
404 | ||
2b066ec1 | 405 | case 'h': |
277c1957 DS |
406 | usage (s, 0); |
407 | break; | |
408 | ||
2b066ec1 | 409 | default: |
277c1957 DS |
410 | usage (s, 1); |
411 | break; | |
2b066ec1 FCE |
412 | } |
413 | } | |
414 | ||
f272aacc LG |
415 | if(!s.bulk_mode && !s.merge) |
416 | { | |
417 | cerr << "-M option is valid only for bulk (relayfs) mode." <<endl; | |
277c1957 | 418 | usage (s, 1); |
f272aacc LG |
419 | } |
420 | ||
421 | if(!s.output_file.empty() && s.bulk_mode && !s.merge) | |
422 | { | |
423 | cerr << "You can't specify -M, -b and -o options together." <<endl; | |
277c1957 | 424 | usage (s, 1); |
f272aacc LG |
425 | } |
426 | ||
ea3f75ae DS |
427 | if (s.last_pass > 4 && release_changed) |
428 | { | |
b8da0ad1 FCE |
429 | if (s.verbose) |
430 | cerr << "Warning: changing last pass to 4 since cross-compiling" << endl; | |
ea3f75ae DS |
431 | s.last_pass = 4; |
432 | } | |
433 | ||
2b066ec1 FCE |
434 | for (int i = optind; i < argc; i++) |
435 | { | |
436 | if (! have_script) | |
437 | { | |
438 | script_file = string (argv[i]); | |
439 | have_script = true; | |
440 | } | |
441 | else | |
f4b28491 | 442 | s.args.push_back (string (argv[i])); |
2b066ec1 FCE |
443 | } |
444 | ||
445 | // need a user file | |
446 | if (! have_script) | |
277c1957 DS |
447 | { |
448 | cerr << "A script must be specified." << endl; | |
449 | usage(s, 1); | |
450 | } | |
f4b28491 FCE |
451 | |
452 | int rc = 0; | |
2b066ec1 | 453 | |
ce3187ac | 454 | // override PATH and LC_ALL |
c72dc86c JS |
455 | const char *path = "/bin:/sbin:/usr/bin:/usr/sbin"; |
456 | rc = setenv("PATH", path, 1) || setenv("LC_ALL", "C", 1); | |
ce3187ac FCE |
457 | if (rc) |
458 | { | |
459 | const char* e = strerror (errno); | |
c72dc86c | 460 | cerr << "setenv (\"PATH=" << path << "\" + \"LC_ALL=C\"): " |
ce3187ac FCE |
461 | << e << endl; |
462 | } | |
f8949662 | 463 | |
861c2f28 DS |
464 | // Get rid of a few standard environment variables (which might |
465 | // cause us to do unintended things). | |
466 | rc = unsetenv("IFS") || unsetenv("CDPATH") || unsetenv("ENV") | |
467 | || unsetenv("BASH_ENV"); | |
468 | if (rc) | |
469 | { | |
470 | const char* e = strerror (errno); | |
471 | cerr << "unsetenv failed: " << e << endl; | |
472 | } | |
473 | ||
197a4d62 JS |
474 | s.kernel_base_release.assign(s.kernel_release, 0, s.kernel_release.find('-')); |
475 | ||
2b066ec1 | 476 | // arguments parsed; get down to business |
72d18b98 FCE |
477 | if (s.verbose > 1) |
478 | version (); | |
2b066ec1 | 479 | |
f4b28491 FCE |
480 | // Create a temporary directory to build within. |
481 | // Be careful with this, as "s.tmpdir" is "rm -rf"'d at the end. | |
482 | { | |
c72dc86c | 483 | const char* tmpdir_env = getenv("TMPDIR"); |
ea8ea02c FCE |
484 | if (! tmpdir_env) |
485 | tmpdir_env = "/tmp"; | |
486 | ||
487 | string stapdir = "/stapXXXXXX"; | |
488 | string tmpdirt = tmpdir_env + stapdir; | |
489 | const char* tmpdir = mkdtemp((char *)tmpdirt.c_str()); | |
f4b28491 FCE |
490 | if (! tmpdir) |
491 | { | |
492 | const char* e = strerror (errno); | |
ea8ea02c FCE |
493 | cerr << "ERROR: cannot create temporary directory (\"" << tmpdirt << "\"): " << e << endl; |
494 | exit (1); // die | |
f4b28491 FCE |
495 | } |
496 | else | |
497 | s.tmpdir = tmpdir; | |
0d49d7bc | 498 | |
b0ee93c4 | 499 | if (s.verbose>1) |
0d49d7bc | 500 | clog << "Created temporary directory \"" << s.tmpdir << "\"" << endl; |
f4b28491 | 501 | } |
2b066ec1 | 502 | |
1b78aef5 DS |
503 | // Create the name of the C source file within the temporary |
504 | // directory. | |
505 | s.translated_source = string(s.tmpdir) + "/" + s.module_name + ".c"; | |
506 | ||
5ee1c56b FCE |
507 | struct tms tms_before; |
508 | times (& tms_before); | |
1d738eed FCE |
509 | struct timeval tv_before; |
510 | gettimeofday (&tv_before, NULL); | |
2b066ec1 FCE |
511 | |
512 | // PASS 1a: PARSING USER SCRIPT | |
f59e98c4 FCE |
513 | |
514 | struct stat user_file_stat; | |
515 | int user_file_stat_rc = -1; | |
516 | ||
69c68955 | 517 | if (script_file == "-") |
129be0ac FCE |
518 | { |
519 | s.user_file = parser::parse (s, cin, s.guru_mode); | |
520 | user_file_stat_rc = fstat (STDIN_FILENO, & user_file_stat); | |
521 | } | |
69c68955 | 522 | else if (script_file != "") |
f59e98c4 FCE |
523 | { |
524 | s.user_file = parser::parse (s, script_file, s.guru_mode); | |
525 | user_file_stat_rc = stat (script_file.c_str(), & user_file_stat); | |
526 | } | |
2b066ec1 FCE |
527 | else |
528 | { | |
529 | istringstream ii (cmdline_script); | |
177a8ead | 530 | s.user_file = parser::parse (s, ii, s.guru_mode); |
2b066ec1 FCE |
531 | } |
532 | if (s.user_file == 0) | |
533 | // syntax errors already printed | |
534 | rc ++; | |
377b8831 | 535 | |
5519d363 | 536 | // Construct arch / kernel-versioning search path |
377b8831 | 537 | vector<string> version_suffixes; |
6f9f33e2 | 538 | string kvr = s.kernel_release; |
5519d363 KS |
539 | const string& arch = s.architecture; |
540 | // add full kernel-version-release (2.6.NN-FOOBAR) + arch | |
541 | version_suffixes.push_back ("/" + kvr + "/" + arch); | |
377b8831 | 542 | version_suffixes.push_back ("/" + kvr); |
5519d363 | 543 | // add kernel version (2.6.NN) + arch |
197a4d62 JS |
544 | if (kvr != s.kernel_base_release) { |
545 | kvr = s.kernel_base_release; | |
6f9f33e2 JS |
546 | version_suffixes.push_back ("/" + kvr + "/" + arch); |
547 | version_suffixes.push_back ("/" + kvr); | |
5519d363 KS |
548 | } |
549 | // add kernel family (2.6) + arch | |
6f9f33e2 JS |
550 | string::size_type dot1_index = kvr.find ('.'); |
551 | string::size_type dot2_index = kvr.rfind ('.'); | |
552 | while (dot2_index > dot1_index && dot2_index != string::npos) { | |
553 | kvr.erase(dot2_index); | |
554 | version_suffixes.push_back ("/" + kvr + "/" + arch); | |
555 | version_suffixes.push_back ("/" + kvr); | |
556 | dot2_index = kvr.rfind ('.'); | |
5519d363 KS |
557 | } |
558 | // add architecture search path | |
559 | version_suffixes.push_back("/" + arch); | |
377b8831 FCE |
560 | // add empty string as last element |
561 | version_suffixes.push_back (""); | |
2b066ec1 FCE |
562 | |
563 | // PASS 1b: PARSING LIBRARY SCRIPTS | |
f4b28491 | 564 | for (unsigned i=0; i<s.include_path.size(); i++) |
2b066ec1 | 565 | { |
377b8831 FCE |
566 | // now iterate upon it |
567 | for (unsigned k=0; k<version_suffixes.size(); k++) | |
2b066ec1 | 568 | { |
377b8831 FCE |
569 | glob_t globbuf; |
570 | string dir = s.include_path[i] + version_suffixes[k] + "/*.stp"; | |
571 | int r = glob(dir.c_str (), 0, NULL, & globbuf); | |
572 | if (r == GLOB_NOSPACE || r == GLOB_ABORTED) | |
2b066ec1 | 573 | rc ++; |
377b8831 FCE |
574 | // GLOB_NOMATCH is acceptable |
575 | ||
c4a94c1a | 576 | if (s.verbose>1 && globbuf.gl_pathc > 0) |
377b8831 | 577 | clog << "Searched '" << dir << "', " |
c4a94c1a | 578 | << "found " << globbuf.gl_pathc << endl; |
2b066ec1 | 579 | |
377b8831 FCE |
580 | for (unsigned j=0; j<globbuf.gl_pathc; j++) |
581 | { | |
24cb178f | 582 | // privilege only for /usr/share/systemtap? |
f59e98c4 | 583 | |
177a8ead | 584 | stapfile* f = parser::parse (s, globbuf.gl_pathv[j], true); |
377b8831 FCE |
585 | if (f == 0) |
586 | rc ++; | |
587 | else | |
24cb178f | 588 | s.library_files.push_back (f); |
f59e98c4 FCE |
589 | |
590 | struct stat tapset_file_stat; | |
591 | int stat_rc = stat (globbuf.gl_pathv[j], & tapset_file_stat); | |
592 | if (stat_rc == 0 && user_file_stat_rc == 0 && | |
593 | user_file_stat.st_dev == tapset_file_stat.st_dev && | |
594 | user_file_stat.st_ino == tapset_file_stat.st_ino) | |
595 | { | |
129be0ac FCE |
596 | clog << "usage error: tapset file '" << globbuf.gl_pathv[j] |
597 | << "' cannot be run directly as a session script." << endl; | |
f59e98c4 FCE |
598 | rc ++; |
599 | } | |
600 | ||
377b8831 | 601 | } |
d54d4661 | 602 | |
377b8831 FCE |
603 | globfree (& globbuf); |
604 | } | |
2b066ec1 FCE |
605 | } |
606 | ||
f4b28491 | 607 | if (rc == 0 && s.last_pass == 1) |
2b066ec1 | 608 | { |
f4b28491 FCE |
609 | cout << "# parse tree dump" << endl; |
610 | s.user_file->print (cout); | |
611 | cout << endl; | |
ae56fddd FCE |
612 | if (s.verbose) |
613 | for (unsigned i=0; i<s.library_files.size(); i++) | |
614 | { | |
615 | s.library_files[i]->print (cout); | |
616 | cout << endl; | |
617 | } | |
2b066ec1 FCE |
618 | } |
619 | ||
5ee1c56b FCE |
620 | struct tms tms_after; |
621 | times (& tms_after); | |
622 | unsigned _sc_clk_tck = sysconf (_SC_CLK_TCK); | |
1d738eed FCE |
623 | struct timeval tv_after; |
624 | gettimeofday (&tv_after, NULL); | |
5ee1c56b FCE |
625 | |
626 | #define TIMESPRINT \ | |
627 | (tms_after.tms_cutime + tms_after.tms_utime \ | |
1d738eed | 628 | - tms_before.tms_cutime - tms_before.tms_utime) * 1000 / (_sc_clk_tck) << "usr/" \ |
5ee1c56b | 629 | << (tms_after.tms_cstime + tms_after.tms_stime \ |
1d738eed FCE |
630 | - tms_before.tms_cstime - tms_before.tms_stime) * 1000 / (_sc_clk_tck) << "sys/" \ |
631 | << ((tv_after.tv_sec - tv_before.tv_sec) * 1000 + \ | |
632 | ((long)tv_after.tv_usec - (long)tv_before.tv_usec) / 1000) << "real ms." | |
5ee1c56b | 633 | |
eaf134e7 | 634 | // syntax errors, if any, are already printed |
5ee1c56b FCE |
635 | if (s.verbose) |
636 | { | |
637 | clog << "Pass 1: parsed user script and " | |
638 | << s.library_files.size() | |
639 | << " library script(s) in " | |
640 | << TIMESPRINT | |
641 | << endl; | |
642 | } | |
0d49d7bc | 643 | |
2cfb0e46 FCE |
644 | if (rc) |
645 | cerr << "Pass 1: parse failed. " | |
213bee8f | 646 | << "Try again with more '-v' (verbose) options." |
2cfb0e46 FCE |
647 | << endl; |
648 | ||
0d49d7bc | 649 | if (rc || s.last_pass == 1) goto cleanup; |
f4b28491 | 650 | |
5ee1c56b | 651 | times (& tms_before); |
1d738eed | 652 | gettimeofday (&tv_before, NULL); |
5ee1c56b | 653 | |
2b066ec1 | 654 | // PASS 2: ELABORATION |
0d49d7bc | 655 | rc = semantic_pass (s); |
f4b28491 FCE |
656 | |
657 | if (rc == 0 && s.last_pass == 2) | |
1b78aef5 | 658 | printscript(s, cout); |
2b066ec1 | 659 | |
5ee1c56b | 660 | times (& tms_after); |
1d738eed FCE |
661 | gettimeofday (&tv_after, NULL); |
662 | ||
b0ee93c4 | 663 | if (s.verbose) clog << "Pass 2: analyzed script: " |
0d49d7bc FCE |
664 | << s.probes.size() << " probe(s), " |
665 | << s.functions.size() << " function(s), " | |
b20febf3 | 666 | << s.embeds.size() << " embed(s), " |
5ee1c56b FCE |
667 | << s.globals.size() << " global(s) in " |
668 | << TIMESPRINT | |
669 | << endl; | |
0d49d7bc | 670 | |
377b8831 FCE |
671 | if (rc) |
672 | cerr << "Pass 2: analysis failed. " | |
213bee8f | 673 | << "Try again with more '-v' (verbose) options." |
2cfb0e46 | 674 | << endl; |
1b78aef5 DS |
675 | // Generate hash. There isn't any point in generating the hash |
676 | // if last_pass is 2, since we'll quit before using it. | |
677 | else if (s.last_pass != 2 && s.use_cache) | |
678 | { | |
679 | ostringstream o; | |
680 | unsigned saved_verbose; | |
1b78aef5 | 681 | |
9abec538 FCE |
682 | { |
683 | // Make sure we're in verbose mode, so that printscript() | |
684 | // will output function/probe bodies. | |
685 | saved_verbose = s.verbose; | |
686 | s.verbose = 3; | |
687 | printscript(s, o); // Print script to 'o' | |
688 | s.verbose = saved_verbose; | |
689 | } | |
1b78aef5 DS |
690 | |
691 | // Generate hash | |
692 | find_hash (s, o.str()); | |
693 | ||
694 | // See if we can use cached source/module. | |
695 | if (get_from_cache(s)) | |
696 | { | |
697 | // If our last pass isn't 5, we're done (since passes 3 and | |
698 | // 4 just generate what we just pulled out of the cache). | |
699 | if (s.last_pass < 5) goto cleanup; | |
700 | ||
701 | // Short-circuit to pass 5. | |
702 | goto pass_5; | |
703 | } | |
704 | } | |
377b8831 | 705 | |
0d49d7bc | 706 | if (rc || s.last_pass == 2) goto cleanup; |
f4b28491 | 707 | |
2b066ec1 | 708 | // PASS 3: TRANSLATION |
5ee1c56b FCE |
709 | |
710 | times (& tms_before); | |
1d738eed FCE |
711 | gettimeofday (&tv_before, NULL); |
712 | ||
0d49d7bc | 713 | rc = translate_pass (s); |
f4b28491 FCE |
714 | |
715 | if (rc == 0 && s.last_pass == 3) | |
716 | { | |
717 | ifstream i (s.translated_source.c_str()); | |
718 | cout << i.rdbuf(); | |
719 | } | |
0d49d7bc | 720 | |
5ee1c56b | 721 | times (& tms_after); |
1d738eed | 722 | gettimeofday (&tv_after, NULL); |
5ee1c56b | 723 | |
0d49d7bc FCE |
724 | if (s.verbose) clog << "Pass 3: translated to C into \"" |
725 | << s.translated_source | |
5ee1c56b FCE |
726 | << "\" in " |
727 | << TIMESPRINT | |
728 | << endl; | |
0d49d7bc | 729 | |
377b8831 | 730 | if (rc) |
2cfb0e46 | 731 | cerr << "Pass 3: translation failed. " |
213bee8f | 732 | << "Try again with more '-v' (verbose) options." |
2cfb0e46 | 733 | << endl; |
377b8831 | 734 | |
0d49d7bc | 735 | if (rc || s.last_pass == 3) goto cleanup; |
d54d4661 | 736 | |
f4b28491 | 737 | // PASS 4: COMPILATION |
5ee1c56b | 738 | times (& tms_before); |
1d738eed | 739 | gettimeofday (&tv_before, NULL); |
0d49d7bc | 740 | rc = compile_pass (s); |
9abec538 FCE |
741 | |
742 | if (rc == 0 && s.last_pass == 4) | |
743 | cout << s.hash_path << endl; | |
744 | ||
5ee1c56b | 745 | times (& tms_after); |
1d738eed | 746 | gettimeofday (&tv_after, NULL); |
5ee1c56b FCE |
747 | |
748 | if (s.verbose) clog << "Pass 4: compiled C into \"" | |
749 | << s.module_name << ".ko" | |
750 | << "\" in " | |
751 | << TIMESPRINT | |
752 | << endl; | |
f4b28491 | 753 | |
eaf134e7 FCE |
754 | if (rc) |
755 | cerr << "Pass 4: compilation failed. " | |
213bee8f | 756 | << "Try again with more '-v' (verbose) options." |
2cfb0e46 | 757 | << endl; |
1b78aef5 DS |
758 | else if (s.use_cache) |
759 | { | |
760 | // Update cache. | |
761 | add_to_cache(s); | |
762 | } | |
eaf134e7 | 763 | |
0d49d7bc | 764 | if (rc || s.last_pass == 4) goto cleanup; |
f4b28491 | 765 | |
9abec538 | 766 | |
0d49d7bc | 767 | // PASS 5: RUN |
1b78aef5 | 768 | pass_5: |
5ee1c56b | 769 | times (& tms_before); |
1d738eed | 770 | gettimeofday (&tv_before, NULL); |
03d569d3 FCE |
771 | // NB: this message is a judgement call. The other passes don't emit |
772 | // a "hello, I'm starting" message, but then the others aren't interactive | |
773 | // and don't take an indefinite amount of time. | |
774 | if (s.verbose) clog << "Pass 5: starting run." << endl; | |
0d49d7bc | 775 | rc = run_pass (s); |
5ee1c56b | 776 | times (& tms_after); |
1d738eed | 777 | gettimeofday (&tv_after, NULL); |
5ee1c56b FCE |
778 | if (s.verbose) clog << "Pass 5: run completed in " |
779 | << TIMESPRINT | |
780 | << endl; | |
f4b28491 | 781 | |
eaf134e7 FCE |
782 | if (rc) |
783 | cerr << "Pass 5: run failed. " | |
213bee8f | 784 | << "Try again with more '-v' (verbose) options." |
2cfb0e46 | 785 | << endl; |
eaf134e7 | 786 | |
0d49d7bc | 787 | // if (rc) goto cleanup; |
2b066ec1 | 788 | |
0d49d7bc | 789 | cleanup: |
f4b28491 FCE |
790 | // Clean up temporary directory. Obviously, be careful with this. |
791 | if (s.tmpdir == "") | |
792 | ; // do nothing | |
793 | else | |
794 | { | |
795 | if (s.keep_tmpdir) | |
0d49d7bc | 796 | clog << "Keeping temporary directory \"" << s.tmpdir << "\"" << endl; |
f4b28491 FCE |
797 | else |
798 | { | |
ce3187ac | 799 | string cleanupcmd = "rm -rf "; |
f4b28491 | 800 | cleanupcmd += s.tmpdir; |
b0ee93c4 | 801 | if (s.verbose>1) clog << "Running " << cleanupcmd << endl; |
d54d4661 | 802 | int status = system (cleanupcmd.c_str()); |
b0ee93c4 | 803 | if (status != 0 && s.verbose>1) |
d54d4661 | 804 | clog << "Cleanup command failed, status: " << status << endl; |
f4b28491 FCE |
805 | } |
806 | } | |
2b066ec1 | 807 | |
54dfabe9 | 808 | return rc ? EXIT_FAILURE : EXIT_SUCCESS; |
2b066ec1 | 809 | } |