git.ozlabs.org Git - ccan/blob - tools/ccanlint/ccanlint.c

   1 /*
   2  * ccanlint: assorted checks and advice for a ccan package
   3  * Copyright (C) 2008 Rusty Russell, Idris Soule
   4  * Copyright (C) 2010 Rusty Russell, Idris Soule
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program; if not, write to the Free Software Foundation, Inc., 51
  18  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20 #include "ccanlint.h"
  21 #include "../tools.h"
  22 #include <unistd.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <err.h>
  27 #include <ctype.h>
  28 #include <ccan/btree/btree.h>
  29 #include <ccan/str/str.h>
  30 #include <ccan/str_talloc/str_talloc.h>
  31 #include <ccan/talloc/talloc.h>
  32 #include <ccan/opt/opt.h>
  33 #include <ccan/foreach/foreach.h>
  34 #include <ccan/grab_file/grab_file.h>
  35 #include <ccan/cast/cast.h>
  36
  37 int verbose = 0;
  38 static struct list_head compulsory_tests;
  39 static struct list_head normal_tests;
  40 bool safe_mode = false;
  41 static struct btree *cmdline_exclude;
  42 static struct btree *info_exclude;
  43 static unsigned int timeout;
  44
  45 /* These are overridden at runtime if we can find config.h */
  46 const char *compiler = NULL;
  47 const char *cflags = NULL;
  48
  49 const char *config_header;
  50
  51 #if 0
  52 static void indent_print(const char *string)
  53 {
  54         while (*string) {
  55                 unsigned int line = strcspn(string, "\n");
  56                 printf("\t%.*s", line, string);
  57                 if (string[line] == '\n') {
  58                         printf("\n");
  59                         line++;
  60                 }
  61                 string += line;
  62         }
  63 }
  64 #endif
  65
  66 bool ask(const char *question)
  67 {
  68         char reply[80];
  69
  70         printf("%s ", question);
  71         fflush(stdout);
  72
  73         return fgets(reply, sizeof(reply), stdin) != NULL
  74                 && toupper(reply[0]) == 'Y';
  75 }
  76
  77 static const char *should_skip(struct manifest *m, struct ccanlint *i)
  78 {
  79         if (btree_lookup(cmdline_exclude, i->key))
  80                 return "excluded on command line";
  81
  82         if (btree_lookup(info_exclude, i->key))
  83                 return "excluded in _info file";
  84
  85         if (i->skip)
  86                 return i->skip;
  87
  88         if (i->skip_fail)
  89                 return "dependency failed";
  90
  91         if (i->can_run)
  92                 return i->can_run(m);
  93         return NULL;
  94 }
  95
  96 static bool run_test(struct ccanlint *i,
  97                      bool quiet,
  98                      unsigned int *running_score,
  99                      unsigned int *running_total,
 100                      struct manifest *m,
 101                      const char *prefix)
 102 {
 103         unsigned int timeleft;
 104         const struct dependent *d;
 105         const char *skip;
 106         struct score *score;
 107
 108         //one less test to run through
 109         list_for_each(&i->dependencies, d, node)
 110                 d->dependent->num_depends--;
 111
 112         score = talloc(m, struct score);
 113         list_head_init(&score->per_file_errors);
 114         score->error = NULL;
 115         score->pass = false;
 116         score->score = 0;
 117         score->total = 1;
 118
 119         skip = should_skip(m, i);
 120
 121         if (skip) {
 122         skip:
 123                 if (verbose && !streq(skip, "not relevant to target"))
 124                         printf("%s%s: skipped (%s)\n", prefix, i->name, skip);
 125
 126                 /* If we're skipping this because a prereq failed, we fail:
 127                  * count it as a score of 1. */
 128                 if (i->skip_fail)
 129                         (*running_total)++;
 130
 131                 list_del(&i->list);
 132                 list_for_each(&i->dependencies, d, node) {
 133                         if (d->dependent->skip)
 134                                 continue;
 135                         d->dependent->skip = "dependency was skipped";
 136                         d->dependent->skip_fail = i->skip_fail;
 137                 }
 138                 return i->skip_fail ? false : true;
 139         }
 140
 141         timeleft = timeout ? timeout : default_timeout_ms;
 142         i->check(m, i->keep_results, &timeleft, score);
 143         if (timeout && timeleft == 0) {
 144                 skip = "timeout";
 145                 goto skip;
 146         }
 147
 148         assert(score->score <= score->total);
 149         if ((!score->pass && !quiet)
 150             || (score->score < score->total && verbose)
 151             || verbose > 1) {
 152                 printf("%s%s (%s): %s",
 153                        prefix, i->name, i->key, score->pass ? "PASS" : "FAIL");
 154                 if (score->total > 1)
 155                         printf(" (+%u/%u)", score->score, score->total);
 156                 printf("\n");
 157         }
 158
 159         if ((!quiet && !score->pass) || verbose) {
 160                 if (score->error) {
 161                         printf("%s%s", score->error,
 162                                strends(score->error, "\n") ? "" : "\n");
 163                 }
 164         }
 165         if (!quiet && score->score < score->total && i->handle)
 166                 i->handle(m, score);
 167
 168         *running_score += score->score;
 169         *running_total += score->total;
 170
 171         list_del(&i->list);
 172
 173         if (!score->pass) {
 174                 /* Skip any tests which depend on this one. */
 175                 list_for_each(&i->dependencies, d, node) {
 176                         if (d->dependent->skip)
 177                                 continue;
 178                         d->dependent->skip = "dependency failed";
 179                         d->dependent->skip_fail = true;
 180                 }
 181         }
 182         return score->pass;
 183 }
 184
 185 static void register_test(struct list_head *h, struct ccanlint *test)
 186 {
 187         list_add(h, &test->list);
 188         test->options = talloc_array(NULL, char *, 1);
 189         test->options[0] = NULL;
 190         test->skip = NULL;
 191         test->skip_fail = false;
 192 }
 193
 194 /**
 195  * get_next_test - retrieves the next test to be processed
 196  **/
 197 static inline struct ccanlint *get_next_test(struct list_head *test)
 198 {
 199         struct ccanlint *i;
 200
 201         if (list_empty(test))
 202                 return NULL;
 203
 204         list_for_each(test, i, list) {
 205                 if (i->num_depends == 0)
 206                         return i;
 207         }
 208         errx(1, "Can't make process; test dependency cycle");
 209 }
 210
 211 static struct ccanlint *find_test(const char *key)
 212 {
 213         struct ccanlint *i;
 214
 215         list_for_each(&compulsory_tests, i, list)
 216                 if (streq(i->key, key))
 217                         return i;
 218
 219         list_for_each(&normal_tests, i, list)
 220                 if (streq(i->key, key))
 221                         return i;
 222
 223         return NULL;
 224 }
 225
 226 bool is_excluded(const char *name)
 227 {
 228         return btree_lookup(cmdline_exclude, name) != NULL
 229                 || btree_lookup(info_exclude, name) != NULL
 230                 || find_test(name)->skip != NULL;
 231 }
 232
 233 #undef REGISTER_TEST
 234 #define REGISTER_TEST(name, ...) extern struct ccanlint name
 235 #include "generated-normal-tests"
 236 #include "generated-compulsory-tests"
 237
 238 static void init_tests(void)
 239 {
 240         struct ccanlint *c;
 241         struct btree *keys, *names;
 242         struct list_head *list;
 243
 244         list_head_init(&normal_tests);
 245         list_head_init(&compulsory_tests);
 246
 247 #undef REGISTER_TEST
 248 #define REGISTER_TEST(name) register_test(&normal_tests, &name)
 249 #include "generated-normal-tests"
 250 #undef REGISTER_TEST
 251 #define REGISTER_TEST(name) register_test(&compulsory_tests, &name)
 252 #include "generated-compulsory-tests"
 253
 254         /* Initialize dependency lists. */
 255         foreach_ptr(list, &compulsory_tests, &normal_tests) {
 256                 list_for_each(list, c, list) {
 257                         list_head_init(&c->dependencies);
 258                         c->num_depends = 0;
 259                 }
 260         }
 261
 262         /* Resolve dependencies. */
 263         foreach_ptr(list, &compulsory_tests, &normal_tests) {
 264                 list_for_each(list, c, list) {
 265                         char **deps = strsplit(NULL, c->needs, " ");
 266                         unsigned int i;
 267
 268                         for (i = 0; deps[i]; i++) {
 269                                 struct ccanlint *dep;
 270                                 struct dependent *dchild;
 271
 272                                 dep = find_test(deps[i]);
 273                                 if (!dep)
 274                                         errx(1, "BUG: unknown dep '%s' for %s",
 275                                              deps[i], c->key);
 276                                 dchild = talloc(NULL, struct dependent);
 277                                 dchild->dependent = c;
 278                                 list_add_tail(&dep->dependencies,
 279                                               &dchild->node);
 280                                 c->num_depends++;
 281                         }
 282                         talloc_free(deps);
 283                 }
 284         }
 285
 286         /* Self-consistency check: make sure no two tests
 287            have the same key or name. */
 288         keys = btree_new(btree_strcmp);
 289         names = btree_new(btree_strcmp);
 290         foreach_ptr(list, &compulsory_tests, &normal_tests) {
 291                 list_for_each(list, c, list) {
 292                         if (!btree_insert(keys, c->key))
 293                                 errx(1, "BUG: Duplicate test key '%s'",
 294                                      c->key);
 295                         if (!btree_insert(names, c->name))
 296                                 errx(1, "BUG: Duplicate test name '%s'",
 297                                      c->name);
 298                 }
 299         }
 300         btree_delete(keys);
 301         btree_delete(names);
 302 }
 303
 304 static void print_test_depends(void)
 305 {
 306         struct list_head *list;
 307
 308         foreach_ptr(list, &compulsory_tests, &normal_tests) {
 309                 struct ccanlint *c;
 310                 printf("\%s Tests\n",
 311                        list == &compulsory_tests ? "Compulsory" : "Normal");
 312
 313                 list_for_each(list, c, list) {
 314                         if (!list_empty(&c->dependencies)) {
 315                                 const struct dependent *d;
 316                                 printf("These depend on %s:\n", c->key);
 317                                 list_for_each(&c->dependencies, d, node)
 318                                         printf("\t%s\n", d->dependent->key);
 319                         }
 320                 }
 321         }
 322 }
 323
 324 static int show_tmpdir(const char *dir)
 325 {
 326         printf("You can find ccanlint working files in '%s'\n", dir);
 327         return 0;
 328 }
 329
 330 static char *keep_test(const char *testname, void *unused)
 331 {
 332         struct ccanlint *i;
 333
 334         if (streq(testname, "all")) {
 335                 struct list_head *list;
 336                 foreach_ptr(list, &compulsory_tests, &normal_tests) {
 337                         list_for_each(list, i, list)
 338                                 i->keep_results = true;
 339                 }
 340         } else {
 341                 i = find_test(testname);
 342                 if (!i)
 343                         errx(1, "No test %s to --keep", testname);
 344                 i->keep_results = true;
 345         }
 346
 347         /* Don't automatically destroy temporary dir. */
 348         talloc_set_destructor(temp_dir(NULL), show_tmpdir);
 349         return NULL;
 350 }
 351
 352 static char *skip_test(const char *testname, void *unused)
 353 {
 354         btree_insert(cmdline_exclude, testname);
 355         return NULL;
 356 }
 357
 358 static void print_tests(struct list_head *tests, const char *type)
 359 {
 360         struct ccanlint *i;
 361
 362         printf("%s tests:\n", type);
 363         /* This makes them print in topological order. */
 364         while ((i = get_next_test(tests)) != NULL) {
 365                 const struct dependent *d;
 366                 printf("   %-25s %s\n", i->key, i->name);
 367                 list_del(&i->list);
 368                 list_for_each(&i->dependencies, d, node)
 369                         d->dependent->num_depends--;
 370         }
 371 }
 372
 373 static char *list_tests(void *arg)
 374 {
 375         init_tests();
 376         print_tests(&compulsory_tests, "Compulsory");
 377         print_tests(&normal_tests, "Normal");
 378         exit(0);
 379 }
 380
 381 static void test_dgraph_vertices(struct list_head *tests, const char *style)
 382 {
 383         const struct ccanlint *i;
 384
 385         list_for_each(tests, i, list) {
 386                 /*
 387                  * todo: escape labels in case ccanlint test keys have
 388                  *       characters interpreted as GraphViz syntax.
 389                  */
 390                 printf("\t\"%p\" [label=\"%s\"%s]\n", i, i->key, style);
 391         }
 392 }
 393
 394 static void test_dgraph_edges(struct list_head *tests)
 395 {
 396         const struct ccanlint *i;
 397         const struct dependent *d;
 398
 399         list_for_each(tests, i, list)
 400                 list_for_each(&i->dependencies, d, node)
 401                         printf("\t\"%p\" -> \"%p\"\n", d->dependent, i);
 402 }
 403
 404 static char *test_dependency_graph(void *arg)
 405 {
 406         init_tests();
 407         puts("digraph G {");
 408
 409         test_dgraph_vertices(&compulsory_tests, ", style=filled, fillcolor=yellow");
 410         test_dgraph_vertices(&normal_tests,     "");
 411
 412         test_dgraph_edges(&compulsory_tests);
 413         test_dgraph_edges(&normal_tests);
 414
 415         puts("}");
 416
 417         exit(0);
 418 }
 419
 420 /* Remove empty lines. */
 421 static char **collapse(char **lines, unsigned int *nump)
 422 {
 423         unsigned int i, j;
 424         for (i = j = 0; lines[i]; i++) {
 425                 if (lines[i][0])
 426                         lines[j++] = lines[i];
 427         }
 428         lines[j] = NULL;
 429         if (nump)
 430                 *nump = j;
 431         return lines;
 432 }
 433
 434
 435 static void add_options(struct ccanlint *test, char **options,
 436                         unsigned int num_options)
 437 {
 438         unsigned int num;
 439
 440         if (!test->options)
 441                 num = 0;
 442         else
 443                 /* -1, because last one is NULL. */
 444                 num = talloc_array_length(test->options) - 1;
 445
 446         test->options = talloc_realloc(NULL, test->options,
 447                                        char *,
 448                                        num + num_options + 1);
 449         memcpy(&test->options[num], options, (num_options + 1)*sizeof(char *));
 450 }
 451
 452 static void add_info_options(struct ccan_file *info, bool mark_fails)
 453 {
 454         struct doc_section *d;
 455         unsigned int i;
 456         struct ccanlint *test;
 457
 458         list_for_each(get_ccan_file_docs(info), d, list) {
 459                 if (!streq(d->type, "ccanlint"))
 460                         continue;
 461
 462                 for (i = 0; i < d->num_lines; i++) {
 463                         unsigned int num_words;
 464                         char **words = collapse(strsplit(d, d->lines[i], " \t"),
 465                                                 &num_words);
 466                         if (num_words == 0)
 467                                 continue;
 468
 469                         if (strncmp(words[0], "//", 2) == 0)
 470                                 continue;
 471
 472                         test = find_test(words[0]);
 473                         if (!test) {
 474                                 warnx("%s: unknown ccanlint test '%s'",
 475                                       info->fullname, words[0]);
 476                                 continue;
 477                         }
 478
 479                         if (!words[1]) {
 480                                 warnx("%s: no argument to test '%s'",
 481                                       info->fullname, words[0]);
 482                                 continue;
 483                         }
 484
 485                         /* Known failure? */
 486                         if (strcasecmp(words[1], "FAIL") == 0) {
 487                                 if (mark_fails)
 488                                         btree_insert(info_exclude, words[0]);
 489                         } else {
 490                                 if (!test->takes_options)
 491                                         warnx("%s: %s doesn't take options",
 492                                               info->fullname, words[0]);
 493                                 add_options(test, words+1, num_words-1);
 494                         }
 495                 }
 496         }
 497 }
 498
 499 /* If options are of form "filename:<option>" they only apply to that file */
 500 char **per_file_options(const struct ccanlint *test, struct ccan_file *f)
 501 {
 502         char **ret;
 503         unsigned int i, j = 0;
 504
 505         /* Fast path. */
 506         if (!test->options[0])
 507                 return test->options;
 508
 509         ret = talloc_array(f, char *, talloc_array_length(test->options));
 510         for (i = 0; test->options[i]; i++) {
 511                 char *optname;
 512
 513                 if (!test->options[i] || !strchr(test->options[i], ':')) {
 514                         optname = test->options[i];
 515                 } else if (strstarts(test->options[i], f->name)
 516                            && test->options[i][strlen(f->name)] == ':') {
 517                         optname = test->options[i] + strlen(f->name) + 1;
 518                 } else
 519                         continue;
 520
 521                 /* FAIL overrides anything else. */
 522                 if (streq(optname, "FAIL")) {
 523                         ret = talloc_array(f, char *, 2);
 524                         ret[0] = (char *)"FAIL";
 525                         ret[1] = NULL;
 526                         return ret;
 527                 }
 528                 ret[j++] = optname;
 529         }
 530         ret[j] = NULL;
 531
 532         /* Shrink it to size so talloc_array_length() works as expected. */
 533         return talloc_realloc(NULL, ret, char *, j + 1);
 534 }
 535
 536 static bool depends_on(struct ccanlint *i, struct ccanlint *target)
 537 {
 538         const struct dependent *d;
 539
 540         if (i == target)
 541                 return true;
 542
 543         list_for_each(&i->dependencies, d, node) {
 544                 if (depends_on(d->dependent, target))
 545                         return true;
 546         }
 547         return false;
 548 }
 549
 550 /* O(N^2), who cares? */
 551 static void skip_unrelated_tests(struct ccanlint *target)
 552 {
 553         struct ccanlint *i;
 554         struct list_head *list;
 555
 556         foreach_ptr(list, &compulsory_tests, &normal_tests)
 557                 list_for_each(list, i, list)
 558                         if (!depends_on(i, target))
 559                                 i->skip = "not relevant to target";
 560 }
 561
 562 static char *demangle_string(char *string)
 563 {
 564         unsigned int i;
 565         const char mapfrom[] = "abfnrtv";
 566         const char mapto[] = "\a\b\f\n\r\t\v";
 567
 568         if (!strchr(string, '"'))
 569                 return NULL;
 570         string = strchr(string, '"') + 1;
 571         if (!strrchr(string, '"'))
 572                 return NULL;
 573         *strrchr(string, '"') = '\0';
 574
 575         for (i = 0; i < strlen(string); i++) {
 576                 if (string[i] == '\\') {
 577                         char repl;
 578                         unsigned len = 0;
 579                         const char *p = strchr(mapfrom, string[i+1]);
 580                         if (p) {
 581                                 repl = mapto[p - mapfrom];
 582                                 len = 1;
 583                         } else if (strlen(string+i+1) >= 3) {
 584                                 if (string[i+1] == 'x') {
 585                                         repl = (string[i+2]-'0')*16
 586                                                 + string[i+3]-'0';
 587                                         len = 3;
 588                                 } else if (cisdigit(string[i+1])) {
 589                                         repl = (string[i+2]-'0')*8*8
 590                                                 + (string[i+3]-'0')*8
 591                                                 + (string[i+4]-'0');
 592                                         len = 3;
 593                                 }
 594                         }
 595                         if (len == 0) {
 596                                 repl = string[i+1];
 597                                 len = 1;
 598                         }
 599
 600                         string[i] = repl;
 601                         memmove(string + i + 1, string + i + len + 1,
 602                                 strlen(string + i + len + 1) + 1);
 603                 }
 604         }
 605
 606         return string;
 607 }
 608
 609
 610 static void read_config_header(void)
 611 {
 612         char *fname = talloc_asprintf(NULL, "%s/config.h", ccan_dir);
 613         char **lines;
 614         unsigned int i;
 615
 616         config_header = grab_file(NULL, fname, NULL);
 617         if (!config_header) {
 618                 talloc_free(fname);
 619                 return;
 620         }
 621
 622         lines = strsplit(config_header, config_header, "\n");
 623         for (i = 0; i < talloc_array_length(lines) - 1; i++) {
 624                 char *sym;
 625                 const char **line = (const char **)&lines[i];
 626
 627                 if (!get_token(line, "#"))
 628                         continue;
 629                 if (!get_token(line, "define"))
 630                         continue;
 631                 sym = get_symbol_token(lines, line);
 632                 if (streq(sym, "CCAN_COMPILER") && !compiler) {
 633                         compiler = demangle_string(lines[i]);
 634                         if (!compiler)
 635                                 errx(1, "%s:%u:could not parse CCAN_COMPILER",
 636                                      fname, i+1);
 637                         if (verbose > 1)
 638                                 printf("%s: compiler set to '%s'\n",
 639                                        fname, compiler);
 640                 } else if (streq(sym, "CCAN_CFLAGS") && !cflags) {
 641                         cflags = demangle_string(lines[i]);
 642                         if (!cflags)
 643                                 errx(1, "%s:%u:could not parse CCAN_CFLAGS",
 644                                      fname, i+1);
 645                         if (verbose > 1)
 646                                 printf("%s: compiler flags set to '%s'\n",
 647                                        fname, cflags);
 648                 }
 649         }
 650         if (!compiler)
 651                 compiler = CCAN_COMPILER;
 652         if (!cflags)
 653                 compiler = CCAN_CFLAGS;
 654 }
 655
 656 static char *opt_set_const_charp(const char *arg, const char **p)
 657 {
 658         return opt_set_charp(arg, cast_const2(char **, p));
 659 }
 660
 661 int main(int argc, char *argv[])
 662 {
 663         bool summary = false, pass = true;
 664         unsigned int i;
 665         struct manifest *m;
 666         struct ccanlint *t;
 667         const char *prefix = "";
 668         char *dir = talloc_getcwd(NULL), *base_dir = dir, *target = NULL,
 669                 *testlink;
 670
 671         cmdline_exclude = btree_new(btree_strcmp);
 672         info_exclude = btree_new(btree_strcmp);
 673
 674         opt_register_noarg("-n|--safe-mode", opt_set_bool, &safe_mode,
 675                          "do not compile anything");
 676         opt_register_noarg("-l|--list-tests", list_tests, NULL,
 677                          "list tests ccanlint performs (and exit)");
 678         opt_register_noarg("--test-dep-graph", test_dependency_graph, NULL,
 679                          "print dependency graph of tests in Graphviz .dot format");
 680         opt_register_arg("-k|--keep <testname>", keep_test, NULL, NULL,
 681                          "keep results of <testname>"
 682                          " (can be used multiple times, or 'all')");
 683         opt_register_noarg("--summary|-s", opt_set_bool, &summary,
 684                            "simply give one line summary");
 685         opt_register_noarg("--verbose|-v", opt_inc_intval, &verbose,
 686                            "verbose mode (up to -vvvv)");
 687         opt_register_arg("-x|--exclude <testname>", skip_test, NULL, NULL,
 688                          "exclude <testname> (can be used multiple times)");
 689         opt_register_arg("-t|--timeout <milleseconds>", opt_set_uintval,
 690                          NULL, &timeout,
 691                          "ignore (terminate) tests that are slower than this");
 692         opt_register_arg("--target <testname>", opt_set_charp,
 693                          NULL, &target,
 694                          "only run one test (and its prerequisites)");
 695         opt_register_arg("--compiler <compiler>", opt_set_const_charp,
 696                          NULL, &compiler, "set the compiler");
 697         opt_register_arg("--cflags <flags>", opt_set_const_charp,
 698                          NULL, &cflags, "set the compiler flags");
 699         opt_register_noarg("-?|-h|--help", opt_usage_and_exit,
 700                            "\nA program for checking and guiding development"
 701                            " of CCAN modules.",
 702                            "This usage message");
 703
 704         /* We move into temporary directory, so gcov dumps its files there. */
 705         if (chdir(temp_dir(talloc_autofree_context())) != 0)
 706                 err(1, "Error changing to %s temporary dir", temp_dir(NULL));
 707
 708         opt_parse(&argc, argv, opt_log_stderr_exit);
 709
 710         if (verbose >= 3) {
 711                 compile_verbose = true;
 712                 print_test_depends();
 713         }
 714         if (verbose >= 4)
 715                 tools_verbose = true;
 716
 717         /* This links back to the module's test dir. */
 718         testlink = talloc_asprintf(NULL, "%s/test", temp_dir(NULL));
 719
 720         /* Defaults to pwd. */
 721         if (argc == 1) {
 722                 i = 1;
 723                 goto got_dir;
 724         }
 725
 726         for (i = 1; i < argc; i++) {
 727                 unsigned int score, total_score;
 728                 dir = argv[i];
 729
 730                 if (dir[0] != '/')
 731                         dir = talloc_asprintf_append(NULL, "%s/%s",
 732                                                      base_dir, dir);
 733                 while (strends(dir, "/"))
 734                         dir[strlen(dir)-1] = '\0';
 735
 736         got_dir:
 737                 if (dir != base_dir)
 738                         prefix = talloc_append_string(talloc_basename(NULL,dir),
 739                                                       ": ");
 740
 741                 init_tests();
 742
 743                 if (target) {
 744                         struct ccanlint *test;
 745
 746                         test = find_test(target);
 747                         if (!test)
 748                                 errx(1, "Unknown test to run '%s'", target);
 749                         skip_unrelated_tests(test);
 750                 }
 751
 752                 m = get_manifest(talloc_autofree_context(), dir);
 753
 754                 /* FIXME: This has to come after we've got manifest. */
 755                 if (i == 1)
 756                         read_config_header();
 757
 758                 /* Create a symlink from temp dir back to src dir's
 759                  * test directory. */
 760                 unlink(testlink);
 761                 if (symlink(talloc_asprintf(m, "%s/test", dir), testlink) != 0)
 762                         err(1, "Creating test symlink in %s", temp_dir(NULL));
 763
 764                 /* If you don't pass the compulsory tests, score is 0. */
 765                 score = total_score = 0;
 766                 while ((t = get_next_test(&compulsory_tests)) != NULL) {
 767                         if (!run_test(t, summary, &score, &total_score, m,
 768                                       prefix)) {
 769                                 warnx("%s%s failed", prefix, t->name);
 770                                 printf("%sTotal score: 0/%u\n",
 771                                        prefix, total_score);
 772                                 pass = false;
 773                                 goto next;
 774                         }
 775                 }
 776
 777                 /* --target overrides known FAIL from _info */
 778                 if (m->info_file)
 779                         add_info_options(m->info_file, !target);
 780
 781                 while ((t = get_next_test(&normal_tests)) != NULL)
 782                         pass &= run_test(t, summary, &score, &total_score, m,
 783                                          prefix);
 784
 785                 printf("%sTotal score: %u/%u\n", prefix, score, total_score);
 786         next: ;
 787         }
 788         return pass ? 0 : 1;
 789 }