external/bsd/atf/dist/atf-sh/atf-check.cpp

   1 //
   2 // Automated Testing Framework (atf)
   3 //
   4 // Copyright (c) 2008 The NetBSD Foundation, Inc.
   5 // All rights reserved.
   6 //
   7 // Redistribution and use in source and binary forms, with or without
   8 // modification, are permitted provided that the following conditions
   9 // are met:
  10 // 1. Redistributions of source code must retain the above copyright
  11 //    notice, this list of conditions and the following disclaimer.
  12 // 2. Redistributions in binary form must reproduce the above copyright
  13 //    notice, this list of conditions and the following disclaimer in the
  14 //    documentation and/or other materials provided with the distribution.
  15 //
  16 // THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
  17 // CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  18 // INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  19 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20 // IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
  21 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  23 // GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25 // IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  27 // IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28 //
  29
  30 extern "C" {
  31 #include <sys/types.h>
  32 #include <sys/wait.h>
  33
  34 #include <limits.h>
  35 #include <signal.h>
  36 #include <unistd.h>
  37 }
  38
  39 #include <cerrno>
  40 #include <cstdlib>
  41 #include <cstring>
  42 #include <fstream>
  43 #include <ios>
  44 #include <iostream>
  45 #include <iterator>
  46 #include <list>
  47 #include <memory>
  48 #include <utility>
  49
  50 #include "atf-c++/check.hpp"
  51 #include "atf-c++/config.hpp"
  52
  53 #include "atf-c++/detail/application.hpp"
  54 #include "atf-c++/detail/auto_array.hpp"
  55 #include "atf-c++/detail/exceptions.hpp"
  56 #include "atf-c++/detail/fs.hpp"
  57 #include "atf-c++/detail/process.hpp"
  58 #include "atf-c++/detail/sanity.hpp"
  59 #include "atf-c++/detail/text.hpp"
  60
  61 // ------------------------------------------------------------------------
  62 // Auxiliary functions.
  63 // ------------------------------------------------------------------------
  64
  65 namespace {
  66
  67 enum status_check_t {
  68     sc_exit,
  69     sc_ignore,
  70     sc_signal,
  71 };
  72
  73 struct status_check {
  74     status_check_t type;
  75     bool negated;
  76     int value;
  77
  78     status_check(const status_check_t& p_type, const bool p_negated,
  79                  const int p_value) :
  80         type(p_type),
  81         negated(p_negated),
  82         value(p_value)
  83     {
  84     }
  85 };
  86
  87 enum output_check_t {
  88     oc_ignore,
  89     oc_inline,
  90     oc_file,
  91     oc_empty,
  92     oc_match,
  93     oc_save
  94 };
  95
  96 struct output_check {
  97     output_check_t type;
  98     bool negated;
  99     std::string value;
 100
 101     output_check(const output_check_t& p_type, const bool p_negated,
 102                  const std::string& p_value) :
 103         type(p_type),
 104         negated(p_negated),
 105         value(p_value)
 106     {
 107     }
 108 };
 109
 110 class temp_file : public std::ostream {
 111     std::auto_ptr< atf::fs::path > m_path;
 112     int m_fd;
 113
 114 public:
 115     temp_file(const atf::fs::path& p) :
 116         std::ostream(NULL),
 117         m_fd(-1)
 118     {
 119         atf::auto_array< char > buf(new char[p.str().length() + 1]);
 120         std::strcpy(buf.get(), p.c_str());
 121
 122         m_fd = ::mkstemp(buf.get());
 123         if (m_fd == -1)
 124             throw atf::system_error("atf_check::temp_file::temp_file(" +
 125                                     p.str() + ")", "mkstemp(3) failed",
 126                                     errno);
 127
 128         m_path.reset(new atf::fs::path(buf.get()));
 129     }
 130
 131     ~temp_file(void)
 132     {
 133         close();
 134         try {
 135             remove(*m_path);
 136         } catch (const atf::system_error&) {
 137             // Ignore deletion errors.
 138         }
 139     }
 140
 141     const atf::fs::path&
 142     get_path(void) const
 143     {
 144         return *m_path;
 145     }
 146
 147     void
 148     write(const std::string& text)
 149     {
 150         if (::write(m_fd, text.c_str(), text.size()) == -1)
 151             throw atf::system_error("atf_check", "write(2) failed", errno);
 152     }
 153
 154     void
 155     close(void)
 156     {
 157         if (m_fd != -1) {
 158             flush();
 159             ::close(m_fd);
 160             m_fd = -1;
 161         }
 162     }
 163 };
 164
 165 } // anonymous namespace
 166
 167 static int
 168 parse_exit_code(const std::string& str)
 169 {
 170     try {
 171         const int value = atf::text::to_type< int >(str);
 172         if (value < 0 || value > 255)
 173             throw std::runtime_error("Unused reason");
 174         return value;
 175     } catch (const std::runtime_error&) {
 176         throw atf::application::usage_error("Invalid exit code for -s option; "
 177             "must be an integer in range 0-255");
 178     }
 179 }
 180
 181 static struct name_number {
 182     const char *name;
 183     int signo;
 184 } signal_names_to_numbers[] = {
 185     { "hup", SIGHUP },
 186     { "int", SIGINT },
 187     { "quit", SIGQUIT },
 188     { "trap", SIGTRAP },
 189     { "abrt", SIGABRT },
 190     { "kill", SIGKILL },
 191     { "segv", SIGSEGV },
 192     { "pipe", SIGPIPE },
 193     { "alrm", SIGALRM },
 194     { "term", SIGTERM },
 195     { "usr1", SIGUSR1 },
 196     { "usr2", SIGUSR2 },
 197     { NULL, INT_MIN },
 198 };
 199
 200 static int
 201 signal_name_to_number(const std::string& str)
 202 {
 203     struct name_number* iter = signal_names_to_numbers;
 204     int signo = INT_MIN;
 205     while (signo == INT_MIN && iter->name != NULL) {
 206         if (str == iter->name || str == std::string("sig") + iter->name)
 207             signo = iter->signo;
 208         else
 209             iter++;
 210     }
 211     return signo;
 212 }
 213
 214 static int
 215 parse_signal(const std::string& str)
 216 {
 217     const int signo = signal_name_to_number(str);
 218     if (signo == INT_MIN) {
 219         try {
 220             return atf::text::to_type< int >(str);
 221         } catch (std::runtime_error) {
 222             throw atf::application::usage_error("Invalid signal name or number "
 223                 "in -s option");
 224         }
 225     }
 226     INV(signo != INT_MIN);
 227     return signo;
 228 }
 229
 230 static status_check
 231 parse_status_check_arg(const std::string& arg)
 232 {
 233     const std::string::size_type delimiter = arg.find(':');
 234     bool negated = (arg.compare(0, 4, "not-") == 0);
 235     const std::string action_str = arg.substr(0, delimiter);
 236     const std::string action = negated ? action_str.substr(4) : action_str;
 237     const std::string value_str = (
 238         delimiter == std::string::npos ? "" : arg.substr(delimiter + 1));
 239     int value;
 240
 241     status_check_t type;
 242     if (action == "eq") {
 243         // Deprecated; use exit instead.  TODO: Remove after 0.10.
 244         type = sc_exit;
 245         if (negated)
 246             throw atf::application::usage_error("Cannot negate eq checker");
 247         negated = false;
 248         value = parse_exit_code(value_str);
 249     } else if (action == "exit") {
 250         type = sc_exit;
 251         if (value_str.empty())
 252             value = INT_MIN;
 253         else
 254             value = parse_exit_code(value_str);
 255     } else if (action == "ignore") {
 256         if (negated)
 257             throw atf::application::usage_error("Cannot negate ignore checker");
 258         type = sc_ignore;
 259         value = INT_MIN;
 260     } else if (action == "ne") {
 261         // Deprecated; use not-exit instead.  TODO: Remove after 0.10.
 262         type = sc_exit;
 263         if (negated)
 264             throw atf::application::usage_error("Cannot negate ne checker");
 265         negated = true;
 266         value = parse_exit_code(value_str);
 267     } else if (action == "signal") {
 268         type = sc_signal;
 269         if (value_str.empty())
 270             value = INT_MIN;
 271         else
 272             value = parse_signal(value_str);
 273     } else
 274         throw atf::application::usage_error("Invalid status checker");
 275
 276     return status_check(type, negated, value);
 277 }
 278
 279 static
 280 output_check
 281 parse_output_check_arg(const std::string& arg)
 282 {
 283     const std::string::size_type delimiter = arg.find(':');
 284     const bool negated = (arg.compare(0, 4, "not-") == 0);
 285     const std::string action_str = arg.substr(0, delimiter);
 286     const std::string action = negated ? action_str.substr(4) : action_str;
 287
 288     output_check_t type;
 289     if (action == "empty")
 290         type = oc_empty;
 291     else if (action == "file")
 292         type = oc_file;
 293     else if (action == "ignore") {
 294         if (negated)
 295             throw atf::application::usage_error("Cannot negate ignore checker");
 296         type = oc_ignore;
 297     } else if (action == "inline")
 298         type = oc_inline;
 299     else if (action == "match")
 300         type = oc_match;
 301     else if (action == "save") {
 302         if (negated)
 303             throw atf::application::usage_error("Cannot negate save checker");
 304         type = oc_save;
 305     } else
 306         throw atf::application::usage_error("Invalid output checker");
 307
 308     return output_check(type, negated, arg.substr(delimiter + 1));
 309 }
 310
 311 static
 312 std::string
 313 flatten_argv(char* const* argv)
 314 {
 315     std::string cmdline;
 316
 317     char* const* arg = &argv[0];
 318     while (*arg != NULL) {
 319         if (arg != &argv[0])
 320             cmdline += ' ';
 321
 322         cmdline += *arg;
 323
 324         arg++;
 325     }
 326
 327     return cmdline;
 328 }
 329
 330 static
 331 std::auto_ptr< atf::check::check_result >
 332 execute(const char* const* argv)
 333 {
 334     std::cout << "Executing command [ ";
 335     for (int i = 0; argv[i] != NULL; ++i)
 336         std::cout << argv[i] << " ";
 337     std::cout << "]\n";
 338
 339     atf::process::argv_array argva(argv);
 340     return atf::check::exec(argva);
 341 }
 342
 343 static
 344 std::auto_ptr< atf::check::check_result >
 345 execute_with_shell(char* const* argv)
 346 {
 347     const std::string cmd = flatten_argv(argv);
 348
 349     const char* sh_argv[4];
 350     sh_argv[0] = atf::config::get("atf_shell").c_str();
 351     sh_argv[1] = "-c";
 352     sh_argv[2] = cmd.c_str();
 353     sh_argv[3] = NULL;
 354     return execute(sh_argv);
 355 }
 356
 357 static
 358 void
 359 cat_file(const atf::fs::path& path)
 360 {
 361     std::ifstream stream(path.c_str());
 362     if (!stream)
 363         throw std::runtime_error("Failed to open " + path.str());
 364
 365     stream >> std::noskipws;
 366     std::istream_iterator< char > begin(stream), end;
 367     std::ostream_iterator< char > out(std::cerr);
 368     std::copy(begin, end, out);
 369
 370     stream.close();
 371 }
 372
 373 static
 374 bool
 375 grep_file(const atf::fs::path& path, const std::string& regexp)
 376 {
 377     std::ifstream stream(path.c_str());
 378     if (!stream)
 379         throw std::runtime_error("Failed to open " + path.str());
 380
 381     bool found = false;
 382
 383     std::string line;
 384     while (!found && !std::getline(stream, line).fail()) {
 385         if (atf::text::match(line, regexp))
 386             found = true;
 387     }
 388
 389     stream.close();
 390
 391     return found;
 392 }
 393
 394 static
 395 bool
 396 file_empty(const atf::fs::path& p)
 397 {
 398     atf::fs::file_info f(p);
 399
 400     return (f.get_size() == 0);
 401 }
 402
 403 static bool
 404 compare_files(const atf::fs::path& p1, const atf::fs::path& p2)
 405 {
 406     bool equal = false;
 407
 408     std::ifstream f1(p1.c_str());
 409     if (!f1)
 410         throw std::runtime_error("Failed to open " + p1.str());
 411
 412     std::ifstream f2(p2.c_str());
 413     if (!f2)
 414         throw std::runtime_error("Failed to open " + p1.str());
 415
 416     for (;;) {
 417         char buf1[512], buf2[512];
 418
 419         f1.read(buf1, sizeof(buf1));
 420         if (f1.bad())
 421             throw std::runtime_error("Failed to read from " + p1.str());
 422
 423         f2.read(buf2, sizeof(buf2));
 424         if (f2.bad())
 425             throw std::runtime_error("Failed to read from " + p1.str());
 426
 427         if ((f1.gcount() == 0) && (f2.gcount() == 0)) {
 428             equal = true;
 429             break;
 430         }
 431
 432         if ((f1.gcount() != f2.gcount()) ||
 433             (std::memcmp(buf1, buf2, f1.gcount()) != 0)) {
 434             break;
 435         }
 436     }
 437
 438     return equal;
 439 }
 440
 441 static
 442 void
 443 print_diff(const atf::fs::path& p1, const atf::fs::path& p2)
 444 {
 445     const atf::process::status s =
 446         atf::process::exec(atf::fs::path("diff"),
 447                            atf::process::argv_array("diff", "-u", p1.c_str(),
 448                                                     p2.c_str(), NULL),
 449                            atf::process::stream_connect(STDOUT_FILENO,
 450                                                         STDERR_FILENO),
 451                            atf::process::stream_inherit());
 452
 453     if (!s.exited())
 454         std::cerr << "Failed to run diff(3)\n";
 455
 456     if (s.exitstatus() != 1)
 457         std::cerr << "Error while running diff(3)\n";
 458 }
 459
 460 static
 461 std::string
 462 decode(const std::string& s)
 463 {
 464     size_t i;
 465     std::string res;
 466
 467     res.reserve(s.length());
 468
 469     i = 0;
 470     while (i < s.length()) {
 471         char c = s[i++];
 472
 473         if (c == '\\') {
 474             switch (s[i++]) {
 475             case 'a': c = '\a'; break;
 476             case 'b': c = '\b'; break;
 477             case 'c': break;
 478             case 'e': c = 033; break;
 479             case 'f': c = '\f'; break;
 480             case 'n': c = '\n'; break;
 481             case 'r': c = '\r'; break;
 482             case 't': c = '\t'; break;
 483             case 'v': c = '\v'; break;
 484             case '\\': break;
 485             case '0':
 486                 {
 487                     int count = 3;
 488                     c = 0;
 489                     while (--count >= 0 && (unsigned)(s[i] - '0') < 8)
 490                         c = (c << 3) + (s[i++] - '0');
 491                     break;
 492                 }
 493             default:
 494                 --i;
 495                 break;
 496             }
 497         }
 498
 499         res.push_back(c);
 500     }
 501
 502     return res;
 503 }
 504
 505 static
 506 bool
 507 run_status_check(const status_check& sc, const atf::check::check_result& cr)
 508 {
 509     bool result;
 510
 511     if (sc.type == sc_exit) {
 512         if (cr.exited() && sc.value != INT_MIN) {
 513             const int status = cr.exitcode();
 514
 515             if (!sc.negated && sc.value != status) {
 516                 std::cerr << "Fail: incorrect exit status: "
 517                           << status << ", expected: "
 518                           << sc.value << "\n";
 519                 result = false;
 520             } else if (sc.negated && sc.value == status) {
 521                 std::cerr << "Fail: incorrect exit status: "
 522                           << status << ", expected: "
 523                           << "anything else\n";
 524                 result = false;
 525             } else
 526                 result = true;
 527         } else if (cr.exited() && sc.value == INT_MIN) {
 528             result = true;
 529         } else {
 530             std::cerr << "Fail: program did not exit cleanly\n";
 531             result = false;
 532         }
 533     } else if (sc.type == sc_ignore) {
 534         result = true;
 535     } else if (sc.type == sc_signal) {
 536         if (cr.signaled() && sc.value != INT_MIN) {
 537             const int status = cr.termsig();
 538
 539             if (!sc.negated && sc.value != status) {
 540                 std::cerr << "Fail: incorrect signal received: "
 541                           << status << ", expected: " << sc.value << "\n";
 542                 result = false;
 543             } else if (sc.negated && sc.value == status) {
 544                 std::cerr << "Fail: incorrect signal received: "
 545                           << status << ", expected: "
 546                           << "anything else\n";
 547                 result = false;
 548             } else
 549                 result = true;
 550         } else if (cr.signaled() && sc.value == INT_MIN) {
 551             result = true;
 552         } else {
 553             std::cerr << "Fail: program did not receive a signal\n";
 554             result = false;
 555         }
 556     } else {
 557         UNREACHABLE;
 558         result = false;
 559     }
 560
 561     if (result == false) {
 562         std::cerr << "stdout:\n";
 563         cat_file(atf::fs::path(cr.stdout_path()));
 564         std::cerr << "\n";
 565
 566         std::cerr << "stderr:\n";
 567         cat_file(atf::fs::path(cr.stderr_path()));
 568         std::cerr << "\n";
 569     }
 570
 571     return result;
 572 }
 573
 574 static
 575 bool
 576 run_status_checks(const std::vector< status_check >& checks,
 577                   const atf::check::check_result& result)
 578 {
 579     bool ok = false;
 580
 581     for (std::vector< status_check >::const_iterator iter = checks.begin();
 582          !ok && iter != checks.end(); iter++) {
 583          ok |= run_status_check(*iter, result);
 584     }
 585
 586     return ok;
 587 }
 588
 589 static
 590 bool
 591 run_output_check(const output_check oc, const atf::fs::path& path,
 592                  const std::string& stdxxx)
 593 {
 594     bool result;
 595
 596     if (oc.type == oc_empty) {
 597         const bool is_empty = file_empty(path);
 598         if (!oc.negated && !is_empty) {
 599             std::cerr << "Fail: " << stdxxx << " not empty\n";
 600             print_diff(atf::fs::path("/dev/null"), path);
 601             result = false;
 602         } else if (oc.negated && is_empty) {
 603             std::cerr << "Fail: " << stdxxx << " is empty\n";
 604             result = false;
 605         } else
 606             result = true;
 607     } else if (oc.type == oc_file) {
 608         const bool equals = compare_files(path, atf::fs::path(oc.value));
 609         if (!oc.negated && !equals) {
 610             std::cerr << "Fail: " << stdxxx << " does not match golden "
 611                 "output\n";
 612             print_diff(atf::fs::path(oc.value), path);
 613             result = false;
 614         } else if (oc.negated && equals) {
 615             std::cerr << "Fail: " << stdxxx << " matches golden output\n";
 616             cat_file(atf::fs::path(oc.value));
 617             result = false;
 618         } else
 619             result = true;
 620     } else if (oc.type == oc_ignore) {
 621         result = true;
 622     } else if (oc.type == oc_inline) {
 623         atf::fs::path path2 = atf::fs::path(atf::config::get("atf_workdir"))
 624                               / "inline.XXXXXX";
 625         temp_file temp(path2);
 626         temp.write(decode(oc.value));
 627         temp.close();
 628
 629         const bool equals = compare_files(path, temp.get_path());
 630         if (!oc.negated && !equals) {
 631             std::cerr << "Fail: " << stdxxx << " does not match expected "
 632                 "value\n";
 633             print_diff(temp.get_path(), path);
 634             result = false;
 635         } else if (oc.negated && equals) {
 636             std::cerr << "Fail: " << stdxxx << " matches expected value\n";
 637             cat_file(temp.get_path());
 638             result = false;
 639         } else
 640             result = true;
 641     } else if (oc.type == oc_match) {
 642         const bool matches = grep_file(path, oc.value);
 643         if (!oc.negated && !matches) {
 644             std::cerr << "Fail: regexp " + oc.value + " not in " << stdxxx
 645                       << "\n";
 646             cat_file(path);
 647             result = false;
 648         } else if (oc.negated && matches) {
 649             std::cerr << "Fail: regexp " + oc.value + " is in " << stdxxx
 650                       << "\n";
 651             cat_file(path);
 652             result = false;
 653         } else
 654             result = true;
 655     } else if (oc.type == oc_save) {
 656         INV(!oc.negated);
 657         std::ifstream ifs(path.c_str(), std::fstream::binary);
 658         ifs >> std::noskipws;
 659         std::istream_iterator< char > begin(ifs), end;
 660
 661         std::ofstream ofs(oc.value.c_str(), std::fstream::binary
 662                                      | std::fstream::trunc);
 663         std::ostream_iterator <char> obegin(ofs);
 664
 665         std::copy(begin, end, obegin);
 666         result = true;
 667     } else {
 668         UNREACHABLE;
 669         result = false;
 670     }
 671
 672     return result;
 673 }
 674
 675 static
 676 bool
 677 run_output_checks(const std::vector< output_check >& checks,
 678                   const atf::fs::path& path, const std::string& stdxxx)
 679 {
 680     bool ok = true;
 681
 682     for (std::vector< output_check >::const_iterator iter = checks.begin();
 683          iter != checks.end(); iter++) {
 684          ok &= run_output_check(*iter, path, stdxxx);
 685     }
 686
 687     return ok;
 688 }
 689
 690 // ------------------------------------------------------------------------
 691 // The "atf_check" application.
 692 // ------------------------------------------------------------------------
 693
 694 namespace {
 695
 696 class atf_check : public atf::application::app {
 697     bool m_xflag;
 698
 699     std::vector< status_check > m_status_checks;
 700     std::vector< output_check > m_stdout_checks;
 701     std::vector< output_check > m_stderr_checks;
 702
 703     static const char* m_description;
 704
 705     bool run_output_checks(const atf::check::check_result&,
 706                            const std::string&) const;
 707
 708     std::string specific_args(void) const;
 709     options_set specific_options(void) const;
 710     void process_option(int, const char*);
 711     void process_option_s(const std::string&);
 712
 713 public:
 714     atf_check(void);
 715     int main(void);
 716 };
 717
 718 } // anonymous namespace
 719
 720 const char* atf_check::m_description =
 721     "atf-check executes given command and analyzes its results.";
 722
 723 atf_check::atf_check(void) :
 724     app(m_description, "atf-check(1)", "atf(7)"),
 725     m_xflag(false)
 726 {
 727 }
 728
 729 bool
 730 atf_check::run_output_checks(const atf::check::check_result& r,
 731                              const std::string& stdxxx)
 732     const
 733 {
 734     if (stdxxx == "stdout") {
 735         return ::run_output_checks(m_stdout_checks,
 736             atf::fs::path(r.stdout_path()), "stdout");
 737     } else if (stdxxx == "stderr") {
 738         return ::run_output_checks(m_stderr_checks,
 739             atf::fs::path(r.stderr_path()), "stderr");
 740     } else {
 741         UNREACHABLE;
 742         return false;
 743     }
 744 }
 745
 746 std::string
 747 atf_check::specific_args(void)
 748     const
 749 {
 750     return "<command>";
 751 }
 752
 753 atf_check::options_set
 754 atf_check::specific_options(void)
 755     const
 756 {
 757     using atf::application::option;
 758     options_set opts;
 759
 760     opts.insert(option('s', "qual:value", "Handle status. Qualifier "
 761                 "must be one of: ignore exit:<num> signal:<name|num>"));
 762     opts.insert(option('o', "action:arg", "Handle stdout. Action must be "
 763                 "one of: empty ignore file:<path> inline:<val> match:regexp "
 764                 "save:<path>"));
 765     opts.insert(option('e', "action:arg", "Handle stderr. Action must be "
 766                 "one of: empty ignore file:<path> inline:<val> match:regexp "
 767                 "save:<path>"));
 768     opts.insert(option('x', "", "Execute command as a shell command"));
 769
 770     return opts;
 771 }
 772
 773 void
 774 atf_check::process_option(int ch, const char* arg)
 775 {
 776     switch (ch) {
 777     case 's':
 778         m_status_checks.push_back(parse_status_check_arg(arg));
 779         break;
 780
 781     case 'o':
 782         m_stdout_checks.push_back(parse_output_check_arg(arg));
 783         break;
 784
 785     case 'e':
 786         m_stderr_checks.push_back(parse_output_check_arg(arg));
 787         break;
 788
 789     case 'x':
 790         m_xflag = true;
 791         break;
 792
 793     default:
 794         UNREACHABLE;
 795     }
 796 }
 797
 798 int
 799 atf_check::main(void)
 800 {
 801     if (m_argc < 1)
 802         throw atf::application::usage_error("No command specified");
 803
 804     int status = EXIT_FAILURE;
 805
 806     std::auto_ptr< atf::check::check_result > r =
 807         m_xflag ? execute_with_shell(m_argv) : execute(m_argv);
 808
 809     if (m_status_checks.empty())
 810         m_status_checks.push_back(status_check(sc_exit, false, EXIT_SUCCESS));
 811     else if (m_status_checks.size() > 1) {
 812         // TODO: Remove this restriction.
 813         throw atf::application::usage_error("Cannot specify -s more than once");
 814     }
 815
 816     if (m_stdout_checks.empty())
 817         m_stdout_checks.push_back(output_check(oc_empty, false, ""));
 818     if (m_stderr_checks.empty())
 819         m_stderr_checks.push_back(output_check(oc_empty, false, ""));
 820
 821     if ((run_status_checks(m_status_checks, *r) == false) ||
 822         (run_output_checks(*r, "stderr") == false) ||
 823         (run_output_checks(*r, "stdout") == false))
 824         status = EXIT_FAILURE;
 825     else
 826         status = EXIT_SUCCESS;
 827
 828     return status;
 829 }
 830
 831 int
 832 main(int argc, char* const* argv)
 833 {
 834     return atf_check().run(argc, argv);
 835 }