]>
Commit | Line | Data |
---|---|---|
f4b28491 | 1 | // systemtap translator/driver |
44edbcd6 | 2 | // Copyright (C) 2005-2011 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" | |
85007c04 DB |
12 | #include "staptree.h" |
13 | #include "parse.h" | |
14 | #include "elaborate.h" | |
15 | #include "translate.h" | |
16 | #include "buildrun.h" | |
dc38c0ae | 17 | #include "session.h" |
85007c04 DB |
18 | #include "hash.h" |
19 | #include "cache.h" | |
20 | #include "util.h" | |
21 | #include "coveragedb.h" | |
22 | #include "rpm_finder.h" | |
23 | #include "task_finder.h" | |
24 | #include "csclient.h" | |
daa75206 | 25 | #include "remote.h" |
85007c04 | 26 | |
79bc39ab LB |
27 | #include <libintl.h> |
28 | #include <locale.h> | |
79bc39ab | 29 | |
0f5d597d | 30 | #include "stap-probe.h" |
aa4d21c0 | 31 | |
24cb178f | 32 | #include <cstdlib> |
73267b89 | 33 | |
85007c04 DB |
34 | extern "C" { |
35 | #include <glob.h> | |
36 | #include <unistd.h> | |
37 | #include <signal.h> | |
38 | #include <sys/utsname.h> | |
39 | #include <sys/times.h> | |
40 | #include <sys/time.h> | |
41 | #include <sys/stat.h> | |
42 | #include <time.h> | |
43 | #include <unistd.h> | |
44 | } | |
45 | ||
46 | using namespace std; | |
47 | ||
40a50254 JS |
48 | static void |
49 | uniq_list(list<string>& l) | |
e2012a7a | 50 | { |
40a50254 JS |
51 | set<string> s; |
52 | list<string>::iterator i = l.begin(); | |
53 | while (i != l.end()) | |
54 | if (s.insert(*i).second) | |
55 | ++i; | |
56 | else | |
57 | i = l.erase(i); | |
85007c04 | 58 | } |
2dce8c42 | 59 | |
85007c04 DB |
60 | static void |
61 | printscript(systemtap_session& s, ostream& o) | |
62 | { | |
63 | if (s.listing_mode) | |
64 | { | |
65 | // We go through some heroic measures to produce clean output. | |
66 | // Record the alias and probe pointer as <name, set<derived_probe *> > | |
67 | map<string,set<derived_probe *> > probe_list; | |
6e683641 | 68 | |
85007c04 DB |
69 | // Pre-process the probe alias |
70 | for (unsigned i=0; i<s.probes.size(); i++) | |
71 | { | |
72 | if (pending_interrupts) return; | |
73 | ||
74 | derived_probe* p = s.probes[i]; | |
75 | // NB: p->basest() is not so interesting; | |
76 | // p->almost_basest() doesn't quite work, so ... | |
77 | vector<probe*> chain; | |
78 | p->collect_derivation_chain (chain); | |
79 | probe* second = (chain.size()>1) ? chain[chain.size()-2] : chain[0]; | |
80 | ||
7977a734 | 81 | if (s.verbose > 5) { |
85007c04 DB |
82 | p->printsig(cerr); cerr << endl; |
83 | cerr << "chain[" << chain.size() << "]:" << endl; | |
84 | for (unsigned j=0; j<chain.size(); j++) | |
85 | { | |
86 | cerr << " [" << j << "]: " << endl; | |
87 | cerr << "\tlocations[" << chain[j]->locations.size() << "]:" << endl; | |
88 | for (unsigned k=0; k<chain[j]->locations.size(); k++) | |
89 | { | |
90 | cerr << "\t [" << k << "]: "; | |
91 | chain[j]->locations[k]->print(cerr); | |
92 | cerr << endl; | |
93 | } | |
94 | const probe_alias *a = chain[j]->get_alias(); | |
95 | if (a) | |
96 | { | |
97 | cerr << "\taliases[" << a->alias_names.size() << "]:" << endl; | |
98 | for (unsigned k=0; k<a->alias_names.size(); k++) | |
99 | { | |
100 | cerr << "\t [" << k << "]: "; | |
101 | a->alias_names[k]->print(cerr); | |
102 | cerr << endl; | |
103 | } | |
104 | } | |
105 | } | |
7977a734 | 106 | } |
85007c04 DB |
107 | |
108 | stringstream tmps; | |
109 | const probe_alias *a = second->get_alias(); | |
110 | if (a) | |
111 | { | |
112 | assert (a->alias_names.size() >= 1); | |
113 | a->alias_names[0]->print(tmps); // XXX: [0] is arbitrary; perhaps print all | |
114 | } | |
115 | else | |
116 | { | |
117 | assert (second->locations.size() >= 1); | |
118 | second->locations[0]->print(tmps); // XXX: [0] is less arbitrary here, but still ... | |
119 | } | |
120 | string pp = tmps.str(); | |
121 | ||
122 | // Now duplicate-eliminate. An alias may have expanded to | |
123 | // several actual derived probe points, but we only want to | |
124 | // print the alias head name once. | |
125 | probe_list[pp].insert(p); | |
126 | } | |
127 | ||
128 | // print probe name and variables if there | |
129 | for (map<string, set<derived_probe *> >::iterator it=probe_list.begin(); it!=probe_list.end(); ++it) | |
130 | { | |
131 | o << it->first; // probe name or alias | |
132 | ||
133 | // Print the locals and arguments for -L mode only | |
134 | if (s.listing_mode_vars) | |
135 | { | |
136 | map<string,unsigned> var_count; // format <"name:type",count> | |
137 | map<string,unsigned> arg_count; | |
138 | list<string> var_list; | |
139 | list<string> arg_list; | |
140 | // traverse set<derived_probe *> to collect all locals and arguments | |
141 | for (set<derived_probe *>::iterator ix=it->second.begin(); ix!=it->second.end(); ++ix) | |
142 | { | |
143 | derived_probe* p = *ix; | |
144 | // collect available locals of the probe | |
145 | for (unsigned j=0; j<p->locals.size(); j++) | |
146 | { | |
147 | stringstream tmps; | |
148 | vardecl* v = p->locals[j]; | |
149 | v->printsig (tmps); | |
150 | var_count[tmps.str()]++; | |
151 | var_list.push_back(tmps.str()); | |
152 | } | |
153 | // collect arguments of the probe if there | |
154 | list<string> arg_set; | |
155 | p->getargs(arg_set); | |
156 | for (list<string>::iterator ia=arg_set.begin(); ia!=arg_set.end(); ++ia) { | |
157 | arg_count[*ia]++; | |
158 | arg_list.push_back(*ia); | |
159 | } | |
160 | } | |
161 | ||
162 | uniq_list(arg_list); | |
163 | uniq_list(var_list); | |
164 | ||
165 | // print the set-intersection only | |
166 | for (list<string>::iterator ir=var_list.begin(); ir!=var_list.end(); ++ir) | |
167 | if (var_count.find(*ir)->second == it->second.size()) // print locals | |
168 | o << " " << *ir; | |
169 | for (list<string>::iterator ir=arg_list.begin(); ir!=arg_list.end(); ++ir) | |
170 | if (arg_count.find(*ir)->second == it->second.size()) // print arguments | |
171 | o << " " << *ir; | |
172 | } | |
173 | o << endl; | |
174 | } | |
175 | } | |
176 | else | |
2dce8c42 | 177 | { |
85007c04 | 178 | if (s.embeds.size() > 0) |
79bc39ab | 179 | o << _("# global embedded code") << endl; |
85007c04 DB |
180 | for (unsigned i=0; i<s.embeds.size(); i++) |
181 | { | |
182 | if (pending_interrupts) return; | |
183 | embeddedcode* ec = s.embeds[i]; | |
184 | ec->print (o); | |
185 | o << endl; | |
186 | } | |
2dce8c42 | 187 | |
85007c04 | 188 | if (s.globals.size() > 0) |
79bc39ab | 189 | o << _("# globals") << endl; |
85007c04 DB |
190 | for (unsigned i=0; i<s.globals.size(); i++) |
191 | { | |
192 | if (pending_interrupts) return; | |
193 | vardecl* v = s.globals[i]; | |
194 | v->printsig (o); | |
195 | if (s.verbose && v->init) | |
196 | { | |
197 | o << " = "; | |
198 | v->init->print(o); | |
199 | } | |
200 | o << endl; | |
201 | } | |
202 | ||
203 | if (s.functions.size() > 0) | |
79bc39ab | 204 | o << _("# functions") << endl; |
85007c04 DB |
205 | for (map<string,functiondecl*>::iterator it = s.functions.begin(); it != s.functions.end(); it++) |
206 | { | |
207 | if (pending_interrupts) return; | |
208 | functiondecl* f = it->second; | |
209 | f->printsig (o); | |
210 | o << endl; | |
211 | if (f->locals.size() > 0) | |
79bc39ab | 212 | o << _(" # locals") << endl; |
85007c04 DB |
213 | for (unsigned j=0; j<f->locals.size(); j++) |
214 | { | |
215 | vardecl* v = f->locals[j]; | |
216 | o << " "; | |
217 | v->printsig (o); | |
218 | o << endl; | |
219 | } | |
220 | if (s.verbose) | |
221 | { | |
222 | f->body->print (o); | |
223 | o << endl; | |
224 | } | |
225 | } | |
226 | ||
227 | if (s.probes.size() > 0) | |
79bc39ab | 228 | o << _("# probes") << endl; |
85007c04 DB |
229 | for (unsigned i=0; i<s.probes.size(); i++) |
230 | { | |
231 | if (pending_interrupts) return; | |
232 | derived_probe* p = s.probes[i]; | |
233 | p->printsig (o); | |
234 | o << endl; | |
235 | if (p->locals.size() > 0) | |
79bc39ab | 236 | o << _(" # locals") << endl; |
85007c04 DB |
237 | for (unsigned j=0; j<p->locals.size(); j++) |
238 | { | |
239 | vardecl* v = p->locals[j]; | |
240 | o << " "; | |
241 | v->printsig (o); | |
242 | o << endl; | |
243 | } | |
244 | if (s.verbose) | |
245 | { | |
246 | p->body->print (o); | |
247 | o << endl; | |
248 | } | |
249 | } | |
2dce8c42 | 250 | } |
85007c04 | 251 | } |
e2012a7a | 252 | |
e2012a7a | 253 | |
85007c04 DB |
254 | int pending_interrupts; |
255 | ||
256 | extern "C" | |
257 | void handle_interrupt (int sig) | |
258 | { | |
c9c8c406 JS |
259 | // This might be nice, but we don't know our current verbosity... |
260 | // clog << _F("Received signal %d", sig) << endl << flush; | |
85007c04 DB |
261 | kill_stap_spawn(sig); |
262 | pending_interrupts ++; | |
536a1b69 FCE |
263 | // Absorb the first two signals. This used to be one, but when |
264 | // stap is run under sudo, and then interrupted, sudo relays a | |
265 | // redundant copy of the signal to stap, leading to an unclean shutdown. | |
266 | if (pending_interrupts > 2) // XXX: should be configurable? time-based? | |
85007c04 DB |
267 | { |
268 | char msg[] = "Too many interrupts received, exiting.\n"; | |
269 | int rc = write (2, msg, sizeof(msg)-1); | |
270 | if (rc) {/* Do nothing; we don't care if our last gasp went out. */ ;} | |
271 | _exit (1); | |
272 | } | |
273 | } | |
274 | ||
275 | ||
276 | void | |
277 | setup_signals (sighandler_t handler) | |
278 | { | |
279 | struct sigaction sa; | |
280 | ||
11c6c509 | 281 | memset(&sa, 0, sizeof(sa)); |
85007c04 DB |
282 | sa.sa_handler = handler; |
283 | sigemptyset (&sa.sa_mask); | |
284 | if (handler != SIG_IGN) | |
285 | { | |
286 | sigaddset (&sa.sa_mask, SIGHUP); | |
287 | sigaddset (&sa.sa_mask, SIGPIPE); | |
288 | sigaddset (&sa.sa_mask, SIGINT); | |
289 | sigaddset (&sa.sa_mask, SIGTERM); | |
5ed19be2 DB |
290 | sigaddset (&sa.sa_mask, SIGXFSZ); |
291 | sigaddset (&sa.sa_mask, SIGXCPU); | |
85007c04 DB |
292 | } |
293 | sa.sa_flags = SA_RESTART; | |
294 | ||
295 | sigaction (SIGHUP, &sa, NULL); | |
296 | sigaction (SIGPIPE, &sa, NULL); | |
297 | sigaction (SIGINT, &sa, NULL); | |
298 | sigaction (SIGTERM, &sa, NULL); | |
5ed19be2 DB |
299 | sigaction (SIGXFSZ, &sa, NULL); |
300 | sigaction (SIGXCPU, &sa, NULL); | |
e2012a7a | 301 | } |
6e683641 | 302 | |
85007c04 DB |
303 | int parse_kernel_config (systemtap_session &s) |
304 | { | |
305 | // PR10702: pull config options | |
306 | string kernel_config_file = s.kernel_build_tree + "/.config"; | |
307 | struct stat st; | |
308 | int rc = stat(kernel_config_file.c_str(), &st); | |
309 | if (rc != 0) | |
46a1a151 JS |
310 | { |
311 | clog << _F("Checking \"%s\" failed with error: %s", | |
312 | kernel_config_file.c_str(), strerror(errno)) << endl; | |
76c87907 LB |
313 | find_devel_rpms(s, s.kernel_build_tree.c_str()); |
314 | missing_rpm_list_print(s,"-devel"); | |
85007c04 DB |
315 | return rc; |
316 | } | |
6861e056 | 317 | |
85007c04 DB |
318 | ifstream kcf (kernel_config_file.c_str()); |
319 | string line; | |
320 | while (getline (kcf, line)) | |
321 | { | |
322 | if (!startswith(line, "CONFIG_")) continue; | |
323 | size_t off = line.find('='); | |
324 | if (off == string::npos) continue; | |
325 | string key = line.substr(0, off); | |
326 | string value = line.substr(off+1, string::npos); | |
327 | s.kernel_config[key] = value; | |
328 | } | |
329 | if (s.verbose > 2) | |
46a1a151 | 330 | clog << _F("Parsed kernel \"%s\", ", kernel_config_file.c_str()) |
19211404 LB |
331 | << _F(ngettext("containing %zu tuple", "containing %zu tuples", |
332 | s.kernel_config.size()), s.kernel_config.size()) << endl; | |
46a1a151 | 333 | |
85007c04 DB |
334 | kcf.close(); |
335 | return 0; | |
336 | } | |
337 | ||
338 | ||
339 | int parse_kernel_exports (systemtap_session &s) | |
340 | { | |
341 | string kernel_exports_file = s.kernel_build_tree + "/Module.symvers"; | |
342 | struct stat st; | |
343 | int rc = stat(kernel_exports_file.c_str(), &st); | |
344 | if (rc != 0) | |
345 | { | |
19211404 LB |
346 | clog << _F("Checking \"%s\" failed with error: %s\nEnsure kernel development headers & makefiles are installed", |
347 | kernel_exports_file.c_str(), strerror(errno)) << endl; | |
85007c04 DB |
348 | return rc; |
349 | } | |
350 | ||
351 | ifstream kef (kernel_exports_file.c_str()); | |
352 | string line; | |
353 | while (getline (kef, line)) | |
354 | { | |
355 | vector<string> tokens; | |
356 | tokenize (line, tokens, "\t"); | |
357 | if (tokens.size() == 4 && | |
358 | tokens[2] == "vmlinux" && | |
359 | tokens[3].substr(0,13) == string("EXPORT_SYMBOL")) | |
360 | s.kernel_exports.insert (tokens[1]); | |
361 | } | |
362 | if (s.verbose > 2) | |
ce0f6648 LB |
363 | clog << _F(ngettext("Parsed kernel %s, which contained one vmlinux export", |
364 | "Parsed kernel %s, which contained %zu vmlinux exports", | |
365 | s.kernel_exports.size()), kernel_exports_file.c_str(), | |
366 | s.kernel_exports.size()) << endl; | |
46a1a151 | 367 | |
85007c04 DB |
368 | kef.close(); |
369 | return 0; | |
370 | } | |
371 | ||
372 | ||
504d2b61 | 373 | static int |
85007c04 DB |
374 | create_temp_dir (systemtap_session &s) |
375 | { | |
90cbace9 | 376 | if (!s.tmpdir.empty()) |
504d2b61 | 377 | return 0; |
90cbace9 | 378 | |
85007c04 DB |
379 | // Create a temporary directory to build within. |
380 | // Be careful with this, as "tmpdir" is "rm -rf"'d at the end. | |
305fac7d CM |
381 | const char * tmpdir_env = getenv("TMPDIR"); |
382 | if (!tmpdir_env) | |
85007c04 DB |
383 | tmpdir_env = "/tmp"; |
384 | ||
385 | string stapdir = "/stapXXXXXX"; | |
386 | string tmpdirt = tmpdir_env + stapdir; | |
85007c04 | 387 | const char *tmpdir_name = mkdtemp((char *)tmpdirt.c_str()); |
85007c04 DB |
388 | if (! tmpdir_name) |
389 | { | |
305fac7d | 390 | const char* e = strerror(errno); |
19211404 | 391 | //TRANSLATORS: we can't make the directory due to the error |
46a1a151 | 392 | cerr << _F("ERROR: cannot create temporary directory (\" %s \"): %s", tmpdirt.c_str(), e) << endl; |
504d2b61 | 393 | return 1; |
85007c04 DB |
394 | } |
395 | else | |
396 | s.tmpdir = tmpdir_name; | |
397 | ||
398 | if (s.verbose>1) | |
46a1a151 | 399 | clog << _F("Created temporary directory \"%s\"", s.tmpdir.c_str()) << endl; |
504d2b61 | 400 | return 0; |
85007c04 DB |
401 | } |
402 | ||
403 | static void | |
e4e3d6b7 | 404 | remove_temp_dir(systemtap_session &s) |
85007c04 | 405 | { |
90cbace9 | 406 | if (!s.tmpdir.empty()) |
85007c04 | 407 | { |
305fac7d CM |
408 | if (s.keep_tmpdir && !s.tmpdir_opt_set) |
409 | clog << _F("Keeping temporary directory \"%s\"", s.tmpdir.c_str()) << endl; | |
410 | else if (!s.tmpdir_opt_set) | |
85007c04 | 411 | { |
e4e3d6b7 CM |
412 | // Mask signals while we're deleting the temporary directory. |
413 | stap_sigmasker masked; | |
85007c04 | 414 | |
e4e3d6b7 CM |
415 | // Remove the temporary directory. |
416 | vector<string> cleanupcmd; | |
417 | cleanupcmd.push_back("rm"); | |
418 | cleanupcmd.push_back("-rf"); | |
419 | cleanupcmd.push_back(s.tmpdir); | |
85007c04 | 420 | |
e4e3d6b7 | 421 | (void) stap_system(s.verbose, cleanupcmd); |
90cbace9 | 422 | s.tmpdir.clear(); |
85007c04 DB |
423 | } |
424 | } | |
425 | } | |
426 | ||
44edbcd6 | 427 | // Compilation passes 0 through 4 |
85007c04 DB |
428 | static int |
429 | passes_0_4 (systemtap_session &s) | |
430 | { | |
431 | int rc = 0; | |
daa75206 | 432 | |
504d2b61 JS |
433 | // If we don't know the release, there's no hope either locally or on a server. |
434 | if (s.kernel_release.empty()) | |
435 | { | |
436 | if (s.kernel_build_tree.empty()) | |
437 | cerr << _("ERROR: kernel release isn't specified") << endl; | |
438 | else | |
46a1a151 JS |
439 | cerr << _F("ERROR: kernel release isn't found in \"%s\"", |
440 | s.kernel_build_tree.c_str()) << endl; | |
504d2b61 JS |
441 | return 1; |
442 | } | |
443 | ||
85007c04 DB |
444 | // Create a temporary directory to build within. |
445 | // Be careful with this, as "s.tmpdir" is "rm -rf"'d at the end. | |
504d2b61 JS |
446 | rc = create_temp_dir (s); |
447 | if (rc) | |
448 | return rc; | |
85007c04 DB |
449 | |
450 | // Perform passes 0 through 4 using a compile server? | |
451 | if (! s.specified_servers.empty ()) | |
452 | { | |
0d1534e8 | 453 | #if HAVE_NSS |
85007c04 | 454 | compile_server_client client (s); |
a46f9abe FCE |
455 | int rc = client.passes_0_4 (); |
456 | // Need to give a user a better diagnostic, if she didn't | |
457 | // even ask for a server | |
458 | if (rc && s.automatic_server_mode) { | |
459 | cerr << _("Note: --use-server --unprivileged was selected because of stapusr membership.") << endl; | |
460 | } | |
461 | return rc; | |
0d1534e8 | 462 | #else |
79bc39ab | 463 | cerr << _("WARNING: Without NSS, using a compile-server is not supported by this version of systemtap") << endl; |
3e1ec884 DB |
464 | // This cannot be an attempt to use a server after a local compile failed |
465 | // since --use-server-on-error is locked to 'no' if we don't have | |
466 | // NSS. | |
467 | assert (! s.try_server ()); | |
0d1534e8 | 468 | #endif |
85007c04 DB |
469 | } |
470 | ||
471 | // PASS 0: setting up | |
472 | s.verbose = s.perpass_verbose[0]; | |
0f5d597d | 473 | PROBE1(stap, pass0__start, &s); |
85007c04 | 474 | |
85007c04 DB |
475 | // For PR1477, we used to override $PATH and $LC_ALL and other stuff |
476 | // here. We seem to use complete pathnames in | |
477 | // buildrun.cxx/tapsets.cxx now, so this is not necessary. Further, | |
478 | // it interferes with util.cxx:find_executable(), used for $PATH | |
479 | // resolution. | |
480 | ||
481 | s.kernel_base_release.assign(s.kernel_release, 0, s.kernel_release.find('-')); | |
482 | ||
85007c04 | 483 | // Now that no further changes to s.kernel_build_tree can occur, let's use it. |
44edbcd6 JS |
484 | if ((rc = parse_kernel_config (s)) != 0) |
485 | { | |
486 | // Try again with a server | |
487 | s.set_try_server (); | |
488 | return rc; | |
489 | } | |
85007c04 | 490 | |
44edbcd6 JS |
491 | if ((rc = parse_kernel_exports (s)) != 0) |
492 | { | |
493 | // Try again with a server | |
494 | s.set_try_server (); | |
495 | return rc; | |
496 | } | |
85007c04 DB |
497 | |
498 | // Create the name of the C source file within the temporary | |
499 | // directory. | |
500 | s.translated_source = string(s.tmpdir) + "/" + s.module_name + ".c"; | |
501 | ||
0f5d597d | 502 | PROBE1(stap, pass0__end, &s); |
85007c04 DB |
503 | |
504 | struct tms tms_before; | |
505 | times (& tms_before); | |
506 | struct timeval tv_before; | |
507 | gettimeofday (&tv_before, NULL); | |
508 | ||
509 | // PASS 1a: PARSING USER SCRIPT | |
0f5d597d | 510 | PROBE1(stap, pass1a__start, &s); |
85007c04 DB |
511 | |
512 | struct stat user_file_stat; | |
513 | int user_file_stat_rc = -1; | |
514 | ||
515 | if (s.script_file == "-") | |
516 | { | |
517 | s.user_file = parse (s, cin, s.guru_mode); | |
518 | user_file_stat_rc = fstat (STDIN_FILENO, & user_file_stat); | |
519 | } | |
520 | else if (s.script_file != "") | |
521 | { | |
522 | s.user_file = parse (s, s.script_file, s.guru_mode); | |
523 | user_file_stat_rc = stat (s.script_file.c_str(), & user_file_stat); | |
524 | } | |
525 | else | |
526 | { | |
527 | istringstream ii (s.cmdline_script); | |
528 | s.user_file = parse (s, ii, s.guru_mode); | |
529 | } | |
530 | if (s.user_file == 0) | |
44edbcd6 JS |
531 | { |
532 | // Syntax errors already printed. | |
533 | rc ++; | |
44edbcd6 | 534 | } |
85007c04 DB |
535 | |
536 | // Construct arch / kernel-versioning search path | |
537 | vector<string> version_suffixes; | |
538 | string kvr = s.kernel_release; | |
539 | const string& arch = s.architecture; | |
540 | // add full kernel-version-release (2.6.NN-FOOBAR) + arch | |
541 | version_suffixes.push_back ("/" + kvr + "/" + arch); | |
542 | version_suffixes.push_back ("/" + kvr); | |
543 | // add kernel version (2.6.NN) + arch | |
544 | if (kvr != s.kernel_base_release) { | |
545 | kvr = s.kernel_base_release; | |
546 | version_suffixes.push_back ("/" + kvr + "/" + arch); | |
547 | version_suffixes.push_back ("/" + kvr); | |
548 | } | |
549 | // add kernel family (2.6) + arch | |
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 ('.'); | |
557 | } | |
558 | // add architecture search path | |
559 | version_suffixes.push_back("/" + arch); | |
560 | // add empty string as last element | |
561 | version_suffixes.push_back (""); | |
562 | ||
563 | // PASS 1b: PARSING LIBRARY SCRIPTS | |
0f5d597d | 564 | PROBE1(stap, pass1b__start, &s); |
85007c04 | 565 | |
ad7c8e43 FCE |
566 | set<pair<dev_t, ino_t> > seen_library_files; |
567 | ||
85007c04 DB |
568 | for (unsigned i=0; i<s.include_path.size(); i++) |
569 | { | |
570 | // now iterate upon it | |
571 | for (unsigned k=0; k<version_suffixes.size(); k++) | |
572 | { | |
573 | glob_t globbuf; | |
574 | string dir = s.include_path[i] + version_suffixes[k] + "/*.stp"; | |
575 | int r = glob(dir.c_str (), 0, NULL, & globbuf); | |
576 | if (r == GLOB_NOSPACE || r == GLOB_ABORTED) | |
3e1ec884 | 577 | rc ++; |
44edbcd6 | 578 | // GLOB_NOMATCH is acceptable |
85007c04 | 579 | |
ad7c8e43 | 580 | unsigned prev_s_library_files = s.library_files.size(); |
85007c04 DB |
581 | |
582 | for (unsigned j=0; j<globbuf.gl_pathc; j++) | |
583 | { | |
584 | if (pending_interrupts) | |
585 | break; | |
586 | ||
85007c04 DB |
587 | struct stat tapset_file_stat; |
588 | int stat_rc = stat (globbuf.gl_pathv[j], & tapset_file_stat); | |
589 | if (stat_rc == 0 && user_file_stat_rc == 0 && | |
590 | user_file_stat.st_dev == tapset_file_stat.st_dev && | |
591 | user_file_stat.st_ino == tapset_file_stat.st_ino) | |
592 | { | |
79bc39ab | 593 | cerr |
46a1a151 JS |
594 | << _F("usage error: tapset file '%s' cannot be run directly as a session script.", |
595 | globbuf.gl_pathv[j]) << endl; | |
85007c04 DB |
596 | rc ++; |
597 | } | |
598 | ||
ad7c8e43 FCE |
599 | // PR11949: duplicate-eliminate tapset files |
600 | if (stat_rc == 0) | |
601 | { | |
602 | pair<dev_t,ino_t> here = make_pair(tapset_file_stat.st_dev, | |
603 | tapset_file_stat.st_ino); | |
604 | if (seen_library_files.find(here) != seen_library_files.end()) | |
605 | continue; | |
606 | seen_library_files.insert (here); | |
607 | } | |
608 | ||
609 | // XXX: privilege only for /usr/share/systemtap? | |
610 | stapfile* f = parse (s, globbuf.gl_pathv[j], true); | |
611 | if (f == 0 && !s.suppress_warnings) | |
612 | s.print_warning("tapset '" + string(globbuf.gl_pathv[j]) | |
613 | + "' has errors, and will be skipped."); | |
614 | else | |
615 | s.library_files.push_back (f); | |
85007c04 DB |
616 | } |
617 | ||
ad7c8e43 FCE |
618 | unsigned next_s_library_files = s.library_files.size(); |
619 | if (s.verbose>1 && globbuf.gl_pathc > 0) | |
ce0f6648 | 620 | //TRANSLATORS: Searching through directories, 'processed' means 'examined so far' |
46a1a151 JS |
621 | clog << _F("Searched: \" %s \", found: %zu, processed: %u", |
622 | dir.c_str(), globbuf.gl_pathc, | |
623 | (next_s_library_files-prev_s_library_files)) << endl; | |
ad7c8e43 | 624 | |
85007c04 DB |
625 | globfree (& globbuf); |
626 | } | |
627 | } | |
628 | if (s.num_errors()) | |
3e1ec884 | 629 | rc ++; |
85007c04 DB |
630 | |
631 | if (rc == 0 && s.last_pass == 1) | |
632 | { | |
79bc39ab | 633 | cout << _("# parse tree dump") << endl; |
85007c04 DB |
634 | s.user_file->print (cout); |
635 | cout << endl; | |
636 | if (s.verbose) | |
637 | for (unsigned i=0; i<s.library_files.size(); i++) | |
638 | { | |
639 | s.library_files[i]->print (cout); | |
640 | cout << endl; | |
641 | } | |
642 | } | |
643 | ||
644 | struct tms tms_after; | |
645 | times (& tms_after); | |
646 | unsigned _sc_clk_tck = sysconf (_SC_CLK_TCK); | |
647 | struct timeval tv_after; | |
648 | gettimeofday (&tv_after, NULL); | |
649 | ||
650 | #define TIMESPRINT "in " << \ | |
651 | (tms_after.tms_cutime + tms_after.tms_utime \ | |
652 | - tms_before.tms_cutime - tms_before.tms_utime) * 1000 / (_sc_clk_tck) << "usr/" \ | |
653 | << (tms_after.tms_cstime + tms_after.tms_stime \ | |
654 | - tms_before.tms_cstime - tms_before.tms_stime) * 1000 / (_sc_clk_tck) << "sys/" \ | |
655 | << ((tv_after.tv_sec - tv_before.tv_sec) * 1000 + \ | |
656 | ((long)tv_after.tv_usec - (long)tv_before.tv_usec) / 1000) << "real ms." | |
657 | ||
658 | // syntax errors, if any, are already printed | |
659 | if (s.verbose) | |
660 | { | |
661 | clog << "Pass 1: parsed user script and " | |
662 | << s.library_files.size() | |
663 | << " library script(s) " | |
664 | << getmemusage() | |
665 | << TIMESPRINT | |
666 | << endl; | |
667 | } | |
668 | ||
669 | if (rc && !s.listing_mode) | |
79bc39ab LB |
670 | cerr << _("Pass 1: parse failed. Try again with another '--vp 1' option.") << endl; |
671 | //cerr << "Pass 1: parse failed. " | |
672 | // << "Try again with another '--vp 1' option." | |
673 | // << endl; | |
85007c04 | 674 | |
0f5d597d | 675 | PROBE1(stap, pass1__end, &s); |
85007c04 DB |
676 | |
677 | if (rc || s.last_pass == 1 || pending_interrupts) return rc; | |
678 | ||
679 | times (& tms_before); | |
680 | gettimeofday (&tv_before, NULL); | |
681 | ||
682 | // PASS 2: ELABORATION | |
683 | s.verbose = s.perpass_verbose[1]; | |
0f5d597d | 684 | PROBE1(stap, pass2__start, &s); |
85007c04 DB |
685 | rc = semantic_pass (s); |
686 | ||
687 | if (s.listing_mode || (rc == 0 && s.last_pass == 2)) | |
688 | printscript(s, cout); | |
689 | ||
690 | times (& tms_after); | |
691 | gettimeofday (&tv_after, NULL); | |
692 | ||
693 | if (s.verbose) clog << "Pass 2: analyzed script: " | |
694 | << s.probes.size() << " probe(s), " | |
695 | << s.functions.size() << " function(s), " | |
696 | << s.embeds.size() << " embed(s), " | |
697 | << s.globals.size() << " global(s) " | |
698 | << getmemusage() | |
699 | << TIMESPRINT | |
700 | << endl; | |
701 | ||
44edbcd6 | 702 | if (rc && !s.listing_mode && !s.try_server ()) |
3e1ec884 | 703 | cerr << _("Pass 2: analysis failed. Try again with another '--vp 01' option.") << endl; |
79bc39ab LB |
704 | //cerr << "Pass 2: analysis failed. " |
705 | // << "Try again with another '--vp 01' option." | |
706 | // << endl; | |
85007c04 DB |
707 | |
708 | /* Print out list of missing files. XXX should be "if (rc)" ? */ | |
76c87907 | 709 | missing_rpm_list_print(s,"-debuginfo"); |
85007c04 | 710 | |
0f5d597d | 711 | PROBE1(stap, pass2__end, &s); |
85007c04 DB |
712 | |
713 | if (rc || s.listing_mode || s.last_pass == 2 || pending_interrupts) return rc; | |
714 | ||
d13bcfd8 JS |
715 | rc = prepare_translate_pass (s); |
716 | if (rc || pending_interrupts) return rc; | |
717 | ||
85007c04 DB |
718 | // Generate hash. There isn't any point in generating the hash |
719 | // if last_pass is 2, since we'll quit before using it. | |
720 | if (s.use_script_cache) | |
721 | { | |
722 | ostringstream o; | |
723 | unsigned saved_verbose; | |
724 | ||
725 | { | |
726 | // Make sure we're in verbose mode, so that printscript() | |
727 | // will output function/probe bodies. | |
728 | saved_verbose = s.verbose; | |
729 | s.verbose = 3; | |
730 | printscript(s, o); // Print script to 'o' | |
731 | s.verbose = saved_verbose; | |
732 | } | |
733 | ||
734 | // Generate hash | |
735 | find_script_hash (s, o.str()); | |
736 | ||
737 | // See if we can use cached source/module. | |
738 | if (get_script_from_cache(s)) | |
739 | { | |
7d26ee02 JS |
740 | // We may still need to build uprobes, if it's not also cached. |
741 | if (s.need_uprobes) | |
742 | rc = uprobes_pass(s); | |
743 | ||
85007c04 DB |
744 | // If our last pass isn't 5, we're done (since passes 3 and |
745 | // 4 just generate what we just pulled out of the cache). | |
7d26ee02 JS |
746 | if (rc || s.last_pass < 5 || pending_interrupts) |
747 | return rc; | |
85007c04 DB |
748 | |
749 | // Short-circuit to pass 5. | |
750 | return 0; | |
751 | } | |
752 | } | |
753 | ||
754 | // PASS 3: TRANSLATION | |
755 | s.verbose = s.perpass_verbose[2]; | |
756 | times (& tms_before); | |
757 | gettimeofday (&tv_before, NULL); | |
0f5d597d | 758 | PROBE1(stap, pass3__start, &s); |
85007c04 DB |
759 | |
760 | rc = translate_pass (s); | |
3e1ec884 | 761 | if (! rc && s.last_pass == 3) |
85007c04 DB |
762 | { |
763 | ifstream i (s.translated_source.c_str()); | |
764 | cout << i.rdbuf(); | |
765 | } | |
766 | ||
767 | times (& tms_after); | |
768 | gettimeofday (&tv_after, NULL); | |
769 | ||
79bc39ab LB |
770 | if (s.verbose) |
771 | clog << "Pass 3: translated to C into \"" | |
772 | << s.translated_source | |
773 | << "\" " | |
774 | << getmemusage() | |
775 | << TIMESPRINT | |
85007c04 DB |
776 | << endl; |
777 | ||
44edbcd6 | 778 | if (rc && ! s.try_server ()) |
79bc39ab LB |
779 | cerr << _("Pass 3: translation failed. Try again with another '--vp 001' option.") << endl; |
780 | //cerr << "Pass 3: translation failed. " | |
781 | // << "Try again with another '--vp 001' option." | |
782 | // << endl; | |
783 | ||
0f5d597d | 784 | PROBE1(stap, pass3__end, &s); |
85007c04 DB |
785 | |
786 | if (rc || s.last_pass == 3 || pending_interrupts) return rc; | |
787 | ||
788 | // PASS 4: COMPILATION | |
789 | s.verbose = s.perpass_verbose[3]; | |
790 | times (& tms_before); | |
791 | gettimeofday (&tv_before, NULL); | |
0f5d597d | 792 | PROBE1(stap, pass4__start, &s); |
85007c04 DB |
793 | |
794 | if (s.use_cache) | |
795 | { | |
796 | find_stapconf_hash(s); | |
797 | get_stapconf_from_cache(s); | |
798 | } | |
799 | rc = compile_pass (s); | |
3e1ec884 | 800 | if (! rc && s.last_pass == 4) |
85007c04 DB |
801 | { |
802 | cout << ((s.hash_path == "") ? (s.module_name + string(".ko")) : s.hash_path); | |
803 | cout << endl; | |
804 | } | |
805 | ||
806 | times (& tms_after); | |
807 | gettimeofday (&tv_after, NULL); | |
808 | ||
809 | if (s.verbose) clog << "Pass 4: compiled C into \"" | |
810 | << s.module_name << ".ko" | |
811 | << "\" " | |
812 | << TIMESPRINT | |
813 | << endl; | |
814 | ||
44edbcd6 | 815 | if (rc && ! s.try_server ()) |
79bc39ab LB |
816 | cerr << _("Pass 4: compilation failed. Try again with another '--vp 0001' option.") << endl; |
817 | //cerr << "Pass 4: compilation failed. " | |
818 | // << "Try again with another '--vp 0001' option." | |
819 | // << endl; | |
85007c04 DB |
820 | else |
821 | { | |
822 | // Update cache. Cache cleaning is kicked off at the beginning of this function. | |
823 | if (s.use_script_cache) | |
824 | add_script_to_cache(s); | |
825 | if (s.use_cache) | |
826 | add_stapconf_to_cache(s); | |
827 | ||
828 | // We may need to save the module in $CWD if the cache was | |
829 | // inaccessible for some reason. | |
830 | if (! s.use_script_cache && s.last_pass == 4) | |
831 | s.save_module = true; | |
832 | ||
833 | // Copy module to the current directory. | |
834 | if (s.save_module && !pending_interrupts) | |
835 | { | |
836 | string module_src_path = s.tmpdir + "/" + s.module_name + ".ko"; | |
837 | string module_dest_path = s.module_name + ".ko"; | |
838 | copy_file(module_src_path, module_dest_path, s.verbose > 1); | |
839 | } | |
840 | } | |
841 | ||
0f5d597d | 842 | PROBE1(stap, pass4__end, &s); |
85007c04 DB |
843 | |
844 | return rc; | |
845 | } | |
846 | ||
847 | static int | |
ebff2ed0 | 848 | pass_5 (systemtap_session &s, vector<remote*> targets) |
85007c04 DB |
849 | { |
850 | // PASS 5: RUN | |
851 | s.verbose = s.perpass_verbose[4]; | |
852 | struct tms tms_before; | |
853 | times (& tms_before); | |
854 | struct timeval tv_before; | |
855 | gettimeofday (&tv_before, NULL); | |
856 | // NB: this message is a judgement call. The other passes don't emit | |
857 | // a "hello, I'm starting" message, but then the others aren't interactive | |
858 | // and don't take an indefinite amount of time. | |
0f5d597d | 859 | PROBE1(stap, pass5__start, &s); |
79bc39ab | 860 | if (s.verbose) clog << _("Pass 5: starting run.") << endl; |
4f244435 | 861 | int rc = remote::run(targets); |
85007c04 DB |
862 | struct tms tms_after; |
863 | times (& tms_after); | |
864 | unsigned _sc_clk_tck = sysconf (_SC_CLK_TCK); | |
865 | struct timeval tv_after; | |
866 | gettimeofday (&tv_after, NULL); | |
867 | if (s.verbose) clog << "Pass 5: run completed " | |
868 | << TIMESPRINT | |
869 | << endl; | |
870 | ||
871 | if (rc) | |
79bc39ab LB |
872 | cerr << _("Pass 5: run failed. Try again with another '--vp 00001' option.") << endl; |
873 | //cerr << "Pass 5: run failed. " | |
874 | // << "Try again with another '--vp 00001' option." | |
875 | // << endl; | |
85007c04 DB |
876 | else |
877 | // Interrupting pass-5 to quit is normal, so we want an EXIT_SUCCESS below. | |
878 | pending_interrupts = 0; | |
879 | ||
0f5d597d | 880 | PROBE1(stap, pass5__end, &s); |
85007c04 DB |
881 | |
882 | return rc; | |
883 | } | |
884 | ||
885 | static void | |
886 | cleanup (systemtap_session &s, int rc) | |
887 | { | |
888 | // PASS 6: cleaning up | |
0f5d597d | 889 | PROBE1(stap, pass6__start, &s); |
85007c04 | 890 | |
ebff2ed0 JS |
891 | for (systemtap_session::session_map_t::iterator it = s.subsessions.begin(); |
892 | it != s.subsessions.end(); ++it) | |
893 | cleanup (*it->second, rc); | |
894 | ||
85007c04 DB |
895 | // update the database information |
896 | if (!rc && s.tapset_compile_coverage && !pending_interrupts) { | |
897 | #ifdef HAVE_LIBSQLITE3 | |
898 | update_coverage_db(s); | |
899 | #else | |
79bc39ab | 900 | cerr << _("Coverage database not available without libsqlite3") << endl; |
85007c04 DB |
901 | #endif |
902 | } | |
903 | ||
904 | // Clean up temporary directory. Obviously, be careful with this. | |
905 | remove_temp_dir (s); | |
906 | ||
0f5d597d | 907 | PROBE1(stap, pass6__end, &s); |
85007c04 DB |
908 | } |
909 | ||
44edbcd6 JS |
910 | static int |
911 | passes_0_4_again_with_server (systemtap_session &s) | |
912 | { | |
913 | // Not a server and not already using a server. | |
914 | assert (! s.client_options); | |
915 | assert (s.specified_servers.empty ()); | |
916 | ||
917 | // Specify default server(s). | |
918 | s.specified_servers.push_back (""); | |
919 | ||
920 | // Remove the previous temporary directory and start fresh. | |
921 | remove_temp_dir (s); | |
922 | ||
923 | // Try to compile again, using the server | |
b5f561be | 924 | clog << _("Attempting compilation using a compile server") |
44edbcd6 JS |
925 | << endl; |
926 | int rc = passes_0_4 (s); | |
927 | return rc; | |
928 | } | |
929 | ||
85007c04 DB |
930 | int |
931 | main (int argc, char * const argv []) | |
932 | { | |
933 | // Initialize defaults. | |
934 | systemtap_session s; | |
935 | ||
79bc39ab LB |
936 | setlocale (LC_ALL, ""); |
937 | bindtextdomain (PACKAGE, LOCALEDIR); | |
938 | textdomain (PACKAGE); | |
939 | ||
b7a0f5ab JS |
940 | // Set up our handler to catch routine signals, to allow clean |
941 | // and reasonably timely exit. | |
942 | setup_signals(&handle_interrupt); | |
943 | ||
85007c04 DB |
944 | // Process the command line. |
945 | int rc = s.parse_cmdline (argc, argv); | |
946 | if (rc != 0) | |
947 | exit (rc); | |
948 | ||
949 | // Check for options conflicts. Exits if errors are detected. | |
950 | s.check_options (argc, argv); | |
951 | ||
3a97e514 JS |
952 | // arguments parsed; get down to business |
953 | if (s.verbose > 1) | |
954 | s.version (); | |
c77af0d0 | 955 | |
504d2b61 JS |
956 | // Some of the remote methods need to write temporary data, so go ahead |
957 | // and create the main tempdir now. | |
958 | rc = create_temp_dir (s); | |
959 | ||
3a97e514 JS |
960 | // Prepare connections for each specified remote target. |
961 | vector<remote*> targets; | |
962 | if (s.remote_uris.empty()) | |
2bce499b | 963 | s.remote_uris.push_back("direct:"); |
3a97e514 | 964 | for (unsigned i = 0; rc == 0 && i < s.remote_uris.size(); ++i) |
85007c04 | 965 | { |
3a97e514 JS |
966 | remote *target = remote::create(s, s.remote_uris[i]); |
967 | if (target) | |
968 | targets.push_back(target); | |
daa75206 | 969 | else |
3a97e514 JS |
970 | rc = 1; |
971 | } | |
972 | ||
973 | // Discover and loop over each unique session created by the remote targets. | |
974 | set<systemtap_session*> sessions; | |
975 | for (unsigned i = 0; i < targets.size(); ++i) | |
976 | sessions.insert(targets[i]->get_session()); | |
977 | for (set<systemtap_session*>::iterator it = sessions.begin(); | |
978 | rc == 0 && !pending_interrupts && it != sessions.end(); ++it) | |
979 | { | |
980 | systemtap_session& ss = **it; | |
981 | if (ss.verbose > 1) | |
982 | clog << _F("Session arch: %s release: %s", | |
983 | ss.architecture.c_str(), ss.kernel_release.c_str()) << endl; | |
85007c04 | 984 | |
3a97e514 JS |
985 | // If requested, query server status. This is independent of other tasks. |
986 | query_server_status (ss); | |
85007c04 | 987 | |
3a97e514 JS |
988 | // If requested, manage trust of servers. This is independent of other tasks. |
989 | manage_server_trust (ss); | |
ebff2ed0 | 990 | |
3a97e514 JS |
991 | // Run the passes only if a script has been specified. The requirement for |
992 | // a script has already been checked in systemtap_session::check_options. | |
993 | if (ss.have_script) | |
994 | { | |
995 | // Run passes 0-4 for each unique session, | |
996 | // either locally or using a compile-server. | |
997 | ss.init_try_server (); | |
998 | if ((rc = passes_0_4 (ss))) | |
999 | { | |
1000 | // Compilation failed. | |
1001 | // Try again using a server if appropriate. | |
1002 | if (ss.try_server ()) | |
1003 | rc = passes_0_4_again_with_server (ss); | |
1004 | } | |
1005 | } | |
85007c04 DB |
1006 | } |
1007 | ||
3a97e514 JS |
1008 | // Run pass 5, if requested |
1009 | if (rc == 0 && s.have_script && s.last_pass >= 5 && ! pending_interrupts) | |
1010 | rc = pass_5 (s, targets); | |
1011 | ||
85007c04 | 1012 | // Pass 6. Cleanup |
3a97e514 JS |
1013 | for (unsigned i = 0; i < targets.size(); ++i) |
1014 | delete targets[i]; | |
85007c04 DB |
1015 | cleanup (s, rc); |
1016 | ||
1017 | return (rc||pending_interrupts) ? EXIT_FAILURE : EXIT_SUCCESS; | |
1018 | } | |
1019 | ||
1020 | /* vim: set sw=2 ts=8 cino=>4,n-2,{2,^-2,t0,(0,u0,w1,M1 : */ |