| 1 | /* bucomm.c -- Bin Utils COMmon code. |
| 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000, 2001, 2002, |
| 3 | 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GNU Binutils. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
| 21 | 02110-1301, USA. */ |
| 22 | \f |
| 23 | /* We might put this in a library someday so it could be dynamically |
| 24 | loaded, but for now it's not necessary. */ |
| 25 | |
| 26 | #include "sysdep.h" |
| 27 | #include "bfd.h" |
| 28 | #include "libiberty.h" |
| 29 | #include "filenames.h" |
| 30 | #include "libbfd.h" |
| 31 | |
| 32 | #include <sys/stat.h> |
| 33 | #include <time.h> /* ctime, maybe time_t */ |
| 34 | #include <assert.h> |
| 35 | #include "bucomm.h" |
| 36 | |
| 37 | #ifndef HAVE_TIME_T_IN_TIME_H |
| 38 | #ifndef HAVE_TIME_T_IN_TYPES_H |
| 39 | typedef long time_t; |
| 40 | #endif |
| 41 | #endif |
| 42 | |
| 43 | static const char * endian_string (enum bfd_endian); |
| 44 | static int display_target_list (void); |
| 45 | static int display_info_table (int, int); |
| 46 | static int display_target_tables (void); |
| 47 | \f |
| 48 | /* Error reporting. */ |
| 49 | |
| 50 | char *program_name; |
| 51 | |
| 52 | void |
| 53 | bfd_nonfatal (const char *string) |
| 54 | { |
| 55 | const char *errmsg; |
| 56 | |
| 57 | errmsg = bfd_errmsg (bfd_get_error ()); |
| 58 | fflush (stdout); |
| 59 | if (string) |
| 60 | fprintf (stderr, "%s: %s: %s\n", program_name, string, errmsg); |
| 61 | else |
| 62 | fprintf (stderr, "%s: %s\n", program_name, errmsg); |
| 63 | } |
| 64 | |
| 65 | /* Issue a non fatal error message. FILENAME, or if NULL then BFD, |
| 66 | are used to indicate the problematic file. SECTION, if non NULL, |
| 67 | is used to provide a section name. If FORMAT is non-null, then it |
| 68 | is used to print additional information via vfprintf. Finally the |
| 69 | bfd error message is printed. In summary, error messages are of |
| 70 | one of the following forms: |
| 71 | |
| 72 | PROGRAM:file: bfd-error-message |
| 73 | PROGRAM:file[section]: bfd-error-message |
| 74 | PROGRAM:file: printf-message: bfd-error-message |
| 75 | PROGRAM:file[section]: printf-message: bfd-error-message. */ |
| 76 | |
| 77 | void |
| 78 | bfd_nonfatal_message (const char *filename, |
| 79 | const bfd *abfd, |
| 80 | const asection *section, |
| 81 | const char *format, ...) |
| 82 | { |
| 83 | const char *errmsg; |
| 84 | const char *section_name; |
| 85 | va_list args; |
| 86 | |
| 87 | errmsg = bfd_errmsg (bfd_get_error ()); |
| 88 | fflush (stdout); |
| 89 | section_name = NULL; |
| 90 | va_start (args, format); |
| 91 | fprintf (stderr, "%s", program_name); |
| 92 | |
| 93 | if (abfd) |
| 94 | { |
| 95 | if (!filename) |
| 96 | filename = bfd_get_archive_filename (abfd); |
| 97 | if (section) |
| 98 | section_name = bfd_get_section_name (abfd, section); |
| 99 | } |
| 100 | if (section_name) |
| 101 | fprintf (stderr, ":%s[%s]", filename, section_name); |
| 102 | else |
| 103 | fprintf (stderr, ":%s", filename); |
| 104 | |
| 105 | if (format) |
| 106 | { |
| 107 | fprintf (stderr, ": "); |
| 108 | vfprintf (stderr, format, args); |
| 109 | } |
| 110 | fprintf (stderr, ": %s\n", errmsg); |
| 111 | va_end (args); |
| 112 | } |
| 113 | |
| 114 | void |
| 115 | bfd_fatal (const char *string) |
| 116 | { |
| 117 | bfd_nonfatal (string); |
| 118 | xexit (1); |
| 119 | } |
| 120 | |
| 121 | void |
| 122 | report (const char * format, va_list args) |
| 123 | { |
| 124 | fflush (stdout); |
| 125 | fprintf (stderr, "%s: ", program_name); |
| 126 | vfprintf (stderr, format, args); |
| 127 | putc ('\n', stderr); |
| 128 | } |
| 129 | |
| 130 | void |
| 131 | fatal VPARAMS ((const char *format, ...)) |
| 132 | { |
| 133 | VA_OPEN (args, format); |
| 134 | VA_FIXEDARG (args, const char *, format); |
| 135 | |
| 136 | report (format, args); |
| 137 | VA_CLOSE (args); |
| 138 | xexit (1); |
| 139 | } |
| 140 | |
| 141 | void |
| 142 | non_fatal VPARAMS ((const char *format, ...)) |
| 143 | { |
| 144 | VA_OPEN (args, format); |
| 145 | VA_FIXEDARG (args, const char *, format); |
| 146 | |
| 147 | report (format, args); |
| 148 | VA_CLOSE (args); |
| 149 | } |
| 150 | |
| 151 | /* Set the default BFD target based on the configured target. Doing |
| 152 | this permits the binutils to be configured for a particular target, |
| 153 | and linked against a shared BFD library which was configured for a |
| 154 | different target. */ |
| 155 | |
| 156 | void |
| 157 | set_default_bfd_target (void) |
| 158 | { |
| 159 | /* The macro TARGET is defined by Makefile. */ |
| 160 | const char *target = TARGET; |
| 161 | |
| 162 | if (! bfd_set_default_target (target)) |
| 163 | fatal (_("can't set BFD default target to `%s': %s"), |
| 164 | target, bfd_errmsg (bfd_get_error ())); |
| 165 | } |
| 166 | |
| 167 | /* After a FALSE return from bfd_check_format_matches with |
| 168 | bfd_get_error () == bfd_error_file_ambiguously_recognized, print |
| 169 | the possible matching targets. */ |
| 170 | |
| 171 | void |
| 172 | list_matching_formats (char **p) |
| 173 | { |
| 174 | fflush (stdout); |
| 175 | fprintf (stderr, _("%s: Matching formats:"), program_name); |
| 176 | while (*p) |
| 177 | fprintf (stderr, " %s", *p++); |
| 178 | fputc ('\n', stderr); |
| 179 | } |
| 180 | |
| 181 | /* List the supported targets. */ |
| 182 | |
| 183 | void |
| 184 | list_supported_targets (const char *name, FILE *f) |
| 185 | { |
| 186 | int t; |
| 187 | const char **targ_names; |
| 188 | |
| 189 | if (name == NULL) |
| 190 | fprintf (f, _("Supported targets:")); |
| 191 | else |
| 192 | fprintf (f, _("%s: supported targets:"), name); |
| 193 | |
| 194 | targ_names = bfd_target_list (); |
| 195 | for (t = 0; targ_names[t] != NULL; t++) |
| 196 | fprintf (f, " %s", targ_names[t]); |
| 197 | fprintf (f, "\n"); |
| 198 | free (targ_names); |
| 199 | } |
| 200 | |
| 201 | /* List the supported architectures. */ |
| 202 | |
| 203 | void |
| 204 | list_supported_architectures (const char *name, FILE *f) |
| 205 | { |
| 206 | const char ** arch; |
| 207 | const char ** arches; |
| 208 | |
| 209 | if (name == NULL) |
| 210 | fprintf (f, _("Supported architectures:")); |
| 211 | else |
| 212 | fprintf (f, _("%s: supported architectures:"), name); |
| 213 | |
| 214 | for (arch = arches = bfd_arch_list (); *arch; arch++) |
| 215 | fprintf (f, " %s", *arch); |
| 216 | fprintf (f, "\n"); |
| 217 | free (arches); |
| 218 | } |
| 219 | \f |
| 220 | /* The length of the longest architecture name + 1. */ |
| 221 | #define LONGEST_ARCH sizeof ("powerpc:common") |
| 222 | |
| 223 | static const char * |
| 224 | endian_string (enum bfd_endian endian) |
| 225 | { |
| 226 | switch (endian) |
| 227 | { |
| 228 | case BFD_ENDIAN_BIG: return "big endian"; |
| 229 | case BFD_ENDIAN_LITTLE: return "little endian"; |
| 230 | default: return "endianness unknown"; |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | /* List the targets that BFD is configured to support, each followed |
| 235 | by its endianness and the architectures it supports. */ |
| 236 | |
| 237 | static int |
| 238 | display_target_list (void) |
| 239 | { |
| 240 | char *dummy_name; |
| 241 | int t; |
| 242 | int ret = 1; |
| 243 | |
| 244 | dummy_name = make_temp_file (NULL); |
| 245 | for (t = 0; bfd_target_vector[t]; t++) |
| 246 | { |
| 247 | const bfd_target *p = bfd_target_vector[t]; |
| 248 | bfd *abfd = bfd_openw (dummy_name, p->name); |
| 249 | int a; |
| 250 | |
| 251 | printf ("%s\n (header %s, data %s)\n", p->name, |
| 252 | endian_string (p->header_byteorder), |
| 253 | endian_string (p->byteorder)); |
| 254 | |
| 255 | if (abfd == NULL) |
| 256 | { |
| 257 | bfd_nonfatal (dummy_name); |
| 258 | ret = 0; |
| 259 | continue; |
| 260 | } |
| 261 | |
| 262 | if (! bfd_set_format (abfd, bfd_object)) |
| 263 | { |
| 264 | if (bfd_get_error () != bfd_error_invalid_operation) |
| 265 | { |
| 266 | bfd_nonfatal (p->name); |
| 267 | ret = 0; |
| 268 | } |
| 269 | bfd_close_all_done (abfd); |
| 270 | continue; |
| 271 | } |
| 272 | |
| 273 | for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++) |
| 274 | if (bfd_set_arch_mach (abfd, (enum bfd_architecture) a, 0)) |
| 275 | printf (" %s\n", |
| 276 | bfd_printable_arch_mach ((enum bfd_architecture) a, 0)); |
| 277 | bfd_close_all_done (abfd); |
| 278 | } |
| 279 | unlink (dummy_name); |
| 280 | free (dummy_name); |
| 281 | |
| 282 | return ret; |
| 283 | } |
| 284 | |
| 285 | /* Print a table showing which architectures are supported for entries |
| 286 | FIRST through LAST-1 of bfd_target_vector (targets across, |
| 287 | architectures down). */ |
| 288 | |
| 289 | static int |
| 290 | display_info_table (int first, int last) |
| 291 | { |
| 292 | int t; |
| 293 | int ret = 1; |
| 294 | char *dummy_name; |
| 295 | int a; |
| 296 | |
| 297 | /* Print heading of target names. */ |
| 298 | printf ("\n%*s", (int) LONGEST_ARCH, " "); |
| 299 | for (t = first; t < last && bfd_target_vector[t]; t++) |
| 300 | printf ("%s ", bfd_target_vector[t]->name); |
| 301 | putchar ('\n'); |
| 302 | |
| 303 | dummy_name = make_temp_file (NULL); |
| 304 | for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++) |
| 305 | if (strcmp (bfd_printable_arch_mach ((enum bfd_architecture) a, 0), |
| 306 | "UNKNOWN!") != 0) |
| 307 | { |
| 308 | printf ("%*s ", (int) LONGEST_ARCH - 1, |
| 309 | bfd_printable_arch_mach ((enum bfd_architecture) a, 0)); |
| 310 | for (t = first; t < last && bfd_target_vector[t]; t++) |
| 311 | { |
| 312 | const bfd_target *p = bfd_target_vector[t]; |
| 313 | bfd_boolean ok = TRUE; |
| 314 | bfd *abfd = bfd_openw (dummy_name, p->name); |
| 315 | |
| 316 | if (abfd == NULL) |
| 317 | { |
| 318 | bfd_nonfatal (p->name); |
| 319 | ret = 0; |
| 320 | ok = FALSE; |
| 321 | } |
| 322 | |
| 323 | if (ok) |
| 324 | { |
| 325 | if (! bfd_set_format (abfd, bfd_object)) |
| 326 | { |
| 327 | if (bfd_get_error () != bfd_error_invalid_operation) |
| 328 | { |
| 329 | bfd_nonfatal (p->name); |
| 330 | ret = 0; |
| 331 | } |
| 332 | ok = FALSE; |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | if (ok) |
| 337 | { |
| 338 | if (! bfd_set_arch_mach (abfd, (enum bfd_architecture) a, 0)) |
| 339 | ok = FALSE; |
| 340 | } |
| 341 | |
| 342 | if (ok) |
| 343 | printf ("%s ", p->name); |
| 344 | else |
| 345 | { |
| 346 | int l = strlen (p->name); |
| 347 | while (l--) |
| 348 | putchar ('-'); |
| 349 | putchar (' '); |
| 350 | } |
| 351 | if (abfd != NULL) |
| 352 | bfd_close_all_done (abfd); |
| 353 | } |
| 354 | putchar ('\n'); |
| 355 | } |
| 356 | unlink (dummy_name); |
| 357 | free (dummy_name); |
| 358 | |
| 359 | return ret; |
| 360 | } |
| 361 | |
| 362 | /* Print tables of all the target-architecture combinations that |
| 363 | BFD has been configured to support. */ |
| 364 | |
| 365 | static int |
| 366 | display_target_tables (void) |
| 367 | { |
| 368 | int t; |
| 369 | int columns; |
| 370 | int ret = 1; |
| 371 | char *colum; |
| 372 | |
| 373 | columns = 0; |
| 374 | colum = getenv ("COLUMNS"); |
| 375 | if (colum != NULL) |
| 376 | columns = atoi (colum); |
| 377 | if (columns == 0) |
| 378 | columns = 80; |
| 379 | |
| 380 | t = 0; |
| 381 | while (bfd_target_vector[t] != NULL) |
| 382 | { |
| 383 | int oldt = t, wid; |
| 384 | |
| 385 | wid = LONGEST_ARCH + strlen (bfd_target_vector[t]->name) + 1; |
| 386 | ++t; |
| 387 | while (wid < columns && bfd_target_vector[t] != NULL) |
| 388 | { |
| 389 | int newwid; |
| 390 | |
| 391 | newwid = wid + strlen (bfd_target_vector[t]->name) + 1; |
| 392 | if (newwid >= columns) |
| 393 | break; |
| 394 | wid = newwid; |
| 395 | ++t; |
| 396 | } |
| 397 | if (! display_info_table (oldt, t)) |
| 398 | ret = 0; |
| 399 | } |
| 400 | |
| 401 | return ret; |
| 402 | } |
| 403 | |
| 404 | int |
| 405 | display_info (void) |
| 406 | { |
| 407 | printf (_("BFD header file version %s\n"), BFD_VERSION_STRING); |
| 408 | if (! display_target_list () || ! display_target_tables ()) |
| 409 | return 1; |
| 410 | else |
| 411 | return 0; |
| 412 | } |
| 413 | \f |
| 414 | /* Display the archive header for an element as if it were an ls -l listing: |
| 415 | |
| 416 | Mode User\tGroup\tSize\tDate Name */ |
| 417 | |
| 418 | void |
| 419 | print_arelt_descr (FILE *file, bfd *abfd, bfd_boolean verbose) |
| 420 | { |
| 421 | struct stat buf; |
| 422 | |
| 423 | if (verbose) |
| 424 | { |
| 425 | if (bfd_stat_arch_elt (abfd, &buf) == 0) |
| 426 | { |
| 427 | char modebuf[11]; |
| 428 | char timebuf[40]; |
| 429 | time_t when = buf.st_mtime; |
| 430 | const char *ctime_result = (const char *) ctime (&when); |
| 431 | |
| 432 | /* POSIX format: skip weekday and seconds from ctime output. */ |
| 433 | sprintf (timebuf, "%.12s %.4s", ctime_result + 4, ctime_result + 20); |
| 434 | |
| 435 | mode_string (buf.st_mode, modebuf); |
| 436 | modebuf[10] = '\0'; |
| 437 | /* POSIX 1003.2/D11 says to skip first character (entry type). */ |
| 438 | fprintf (file, "%s %ld/%ld %6ld %s ", modebuf + 1, |
| 439 | (long) buf.st_uid, (long) buf.st_gid, |
| 440 | (long) buf.st_size, timebuf); |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | fprintf (file, "%s\n", bfd_get_filename (abfd)); |
| 445 | } |
| 446 | |
| 447 | /* Return a path for a new temporary file in the same directory |
| 448 | as file PATH. */ |
| 449 | |
| 450 | static char * |
| 451 | template_in_dir (const char *path) |
| 452 | { |
| 453 | #define template "stXXXXXX" |
| 454 | const char *slash = strrchr (path, '/'); |
| 455 | char *tmpname; |
| 456 | size_t len; |
| 457 | |
| 458 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
| 459 | { |
| 460 | /* We could have foo/bar\\baz, or foo\\bar, or d:bar. */ |
| 461 | char *bslash = strrchr (path, '\\'); |
| 462 | |
| 463 | if (slash == NULL || (bslash != NULL && bslash > slash)) |
| 464 | slash = bslash; |
| 465 | if (slash == NULL && path[0] != '\0' && path[1] == ':') |
| 466 | slash = path + 1; |
| 467 | } |
| 468 | #endif |
| 469 | |
| 470 | if (slash != (char *) NULL) |
| 471 | { |
| 472 | len = slash - path; |
| 473 | tmpname = (char *) xmalloc (len + sizeof (template) + 2); |
| 474 | memcpy (tmpname, path, len); |
| 475 | |
| 476 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
| 477 | /* If tmpname is "X:", appending a slash will make it a root |
| 478 | directory on drive X, which is NOT the same as the current |
| 479 | directory on drive X. */ |
| 480 | if (len == 2 && tmpname[1] == ':') |
| 481 | tmpname[len++] = '.'; |
| 482 | #endif |
| 483 | tmpname[len++] = '/'; |
| 484 | } |
| 485 | else |
| 486 | { |
| 487 | tmpname = (char *) xmalloc (sizeof (template)); |
| 488 | len = 0; |
| 489 | } |
| 490 | |
| 491 | memcpy (tmpname + len, template, sizeof (template)); |
| 492 | return tmpname; |
| 493 | #undef template |
| 494 | } |
| 495 | |
| 496 | /* Return the name of a created temporary file in the same directory |
| 497 | as FILENAME. */ |
| 498 | |
| 499 | char * |
| 500 | make_tempname (char *filename) |
| 501 | { |
| 502 | char *tmpname = template_in_dir (filename); |
| 503 | int fd; |
| 504 | |
| 505 | #ifdef HAVE_MKSTEMP |
| 506 | fd = mkstemp (tmpname); |
| 507 | #else |
| 508 | tmpname = mktemp (tmpname); |
| 509 | if (tmpname == NULL) |
| 510 | return NULL; |
| 511 | fd = open (tmpname, O_RDWR | O_CREAT | O_EXCL, 0600); |
| 512 | #endif |
| 513 | if (fd == -1) |
| 514 | { |
| 515 | free (tmpname); |
| 516 | return NULL; |
| 517 | } |
| 518 | close (fd); |
| 519 | return tmpname; |
| 520 | } |
| 521 | |
| 522 | /* Return the name of a created temporary directory inside the |
| 523 | directory containing FILENAME. */ |
| 524 | |
| 525 | char * |
| 526 | make_tempdir (char *filename) |
| 527 | { |
| 528 | char *tmpname = template_in_dir (filename); |
| 529 | |
| 530 | #ifdef HAVE_MKDTEMP |
| 531 | return mkdtemp (tmpname); |
| 532 | #else |
| 533 | tmpname = mktemp (tmpname); |
| 534 | if (tmpname == NULL) |
| 535 | return NULL; |
| 536 | #if defined (_WIN32) && !defined (__CYGWIN32__) |
| 537 | if (mkdir (tmpname) != 0) |
| 538 | return NULL; |
| 539 | #else |
| 540 | if (mkdir (tmpname, 0700) != 0) |
| 541 | return NULL; |
| 542 | #endif |
| 543 | return tmpname; |
| 544 | #endif |
| 545 | } |
| 546 | |
| 547 | /* Parse a string into a VMA, with a fatal error if it can't be |
| 548 | parsed. */ |
| 549 | |
| 550 | bfd_vma |
| 551 | parse_vma (const char *s, const char *arg) |
| 552 | { |
| 553 | bfd_vma ret; |
| 554 | const char *end; |
| 555 | |
| 556 | ret = bfd_scan_vma (s, &end, 0); |
| 557 | |
| 558 | if (*end != '\0') |
| 559 | fatal (_("%s: bad number: %s"), arg, s); |
| 560 | |
| 561 | return ret; |
| 562 | } |
| 563 | |
| 564 | /* Returns the size of the named file. If the file does not |
| 565 | exist, or if it is not a real file, then a suitable non-fatal |
| 566 | error message is printed and (off_t) -1 is returned. */ |
| 567 | |
| 568 | off_t |
| 569 | get_file_size (const char * file_name) |
| 570 | { |
| 571 | struct stat statbuf; |
| 572 | |
| 573 | if (stat (file_name, &statbuf) < 0) |
| 574 | { |
| 575 | if (errno == ENOENT) |
| 576 | non_fatal (_("'%s': No such file"), file_name); |
| 577 | else |
| 578 | non_fatal (_("Warning: could not locate '%s'. reason: %s"), |
| 579 | file_name, strerror (errno)); |
| 580 | } |
| 581 | else if (! S_ISREG (statbuf.st_mode)) |
| 582 | non_fatal (_("Warning: '%s' is not an ordinary file"), file_name); |
| 583 | else if (statbuf.st_size < 0) |
| 584 | non_fatal (_("Warning: '%s' has negative size, probably it is too large"), |
| 585 | file_name); |
| 586 | else |
| 587 | return statbuf.st_size; |
| 588 | |
| 589 | return (off_t) -1; |
| 590 | } |
| 591 | |
| 592 | /* Return the filename in a static buffer. */ |
| 593 | |
| 594 | const char * |
| 595 | bfd_get_archive_filename (const bfd *abfd) |
| 596 | { |
| 597 | static size_t curr = 0; |
| 598 | static char *buf; |
| 599 | size_t needed; |
| 600 | |
| 601 | assert (abfd != NULL); |
| 602 | |
| 603 | if (!abfd->my_archive) |
| 604 | return bfd_get_filename (abfd); |
| 605 | |
| 606 | needed = (strlen (bfd_get_filename (abfd->my_archive)) |
| 607 | + strlen (bfd_get_filename (abfd)) + 3); |
| 608 | if (needed > curr) |
| 609 | { |
| 610 | if (curr) |
| 611 | free (buf); |
| 612 | curr = needed + (needed >> 1); |
| 613 | buf = (char *) bfd_malloc (curr); |
| 614 | /* If we can't malloc, fail safe by returning just the file name. |
| 615 | This function is only used when building error messages. */ |
| 616 | if (!buf) |
| 617 | { |
| 618 | curr = 0; |
| 619 | return bfd_get_filename (abfd); |
| 620 | } |
| 621 | } |
| 622 | sprintf (buf, "%s(%s)", bfd_get_filename (abfd->my_archive), |
| 623 | bfd_get_filename (abfd)); |
| 624 | return buf; |
| 625 | } |