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