Commit | Line | Data |
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30fd33bb | 1 | /* elfedit.c -- Update the ELF header of an ELF format file |
b3adc24a | 2 | Copyright (C) 2010-2020 Free Software Foundation, Inc. |
30fd33bb L |
3 | |
4 | This file is part of GNU Binutils. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
20 | \f | |
8a6b075b | 21 | #include "config.h" |
30fd33bb | 22 | #include "sysdep.h" |
9c905051 | 23 | #include "libiberty.h" |
30fd33bb | 24 | #include <assert.h> |
30fd33bb L |
25 | |
26 | #if __GNUC__ >= 2 | |
27 | /* Define BFD64 here, even if our default architecture is 32 bit ELF | |
28 | as this will allow us to read in and parse 64bit and 32bit ELF files. | |
29 | Only do this if we believe that the compiler can support a 64 bit | |
30 | data type. For now we only rely on GCC being able to do this. */ | |
31 | #define BFD64 | |
32 | #endif | |
33 | ||
34 | #include "bfd.h" | |
3284fe0c | 35 | #include "elfcomm.h" |
30fd33bb L |
36 | #include "bucomm.h" |
37 | ||
38 | #include "elf/common.h" | |
39 | #include "elf/external.h" | |
40 | #include "elf/internal.h" | |
41 | ||
30fd33bb L |
42 | #include "getopt.h" |
43 | #include "libiberty.h" | |
44 | #include "safe-ctype.h" | |
45 | #include "filenames.h" | |
46 | ||
47 | char * program_name = "elfedit"; | |
48 | static long archive_file_offset; | |
49 | static unsigned long archive_file_size; | |
50 | static Elf_Internal_Ehdr elf_header; | |
51 | static Elf32_External_Ehdr ehdr32; | |
52 | static Elf64_External_Ehdr ehdr64; | |
53 | static int input_elf_machine = -1; | |
54 | static int output_elf_machine = -1; | |
dd35de74 L |
55 | static int input_elf_type = -1; |
56 | static int output_elf_type = -1; | |
d0514c49 L |
57 | static int input_elf_osabi = -1; |
58 | static int output_elf_osabi = -1; | |
6c14750f L |
59 | enum elfclass |
60 | { | |
61 | ELF_CLASS_UNKNOWN = -1, | |
62 | ELF_CLASS_NONE = ELFCLASSNONE, | |
63 | ELF_CLASS_32 = ELFCLASS32, | |
64 | ELF_CLASS_64 = ELFCLASS64, | |
65 | ELF_CLASS_BOTH | |
66 | }; | |
67 | static enum elfclass input_elf_class = ELF_CLASS_UNKNOWN; | |
68 | static enum elfclass output_elf_class = ELF_CLASS_BOTH; | |
69 | ||
8a6b075b L |
70 | #ifdef HAVE_MMAP |
71 | #include <sys/mman.h> | |
72 | ||
73 | static unsigned int enable_x86_features; | |
74 | static unsigned int disable_x86_features; | |
75 | ||
76 | static int | |
77 | update_gnu_property (const char *file_name, FILE *file) | |
78 | { | |
79 | char *map; | |
80 | Elf_Internal_Phdr *phdrs; | |
81 | struct stat st_buf; | |
82 | unsigned int i; | |
83 | int ret; | |
84 | ||
85 | if (!enable_x86_features && !disable_x86_features) | |
86 | return 0; | |
87 | ||
88 | if (elf_header.e_machine != EM_386 | |
89 | && elf_header.e_machine != EM_X86_64) | |
90 | { | |
91 | error (_("%s: Not an i386 nor x86-64 ELF file\n"), file_name); | |
92 | return 0; | |
93 | } | |
94 | ||
95 | if (fstat (fileno (file), &st_buf) < 0) | |
96 | { | |
97 | error (_("%s: stat () failed\n"), file_name); | |
98 | return 1; | |
99 | } | |
100 | ||
101 | map = mmap (NULL, st_buf.st_size, PROT_READ | PROT_WRITE, | |
102 | MAP_SHARED, fileno (file), 0); | |
103 | if (map == MAP_FAILED) | |
104 | { | |
105 | error (_("%s: mmap () failed\n"), file_name); | |
106 | return 0; | |
107 | } | |
108 | ||
109 | phdrs = xmalloc (elf_header.e_phnum * sizeof (*phdrs)); | |
110 | ||
111 | if (elf_header.e_ident[EI_CLASS] == ELFCLASS32) | |
112 | { | |
113 | Elf32_External_Phdr *phdrs32 | |
114 | = (Elf32_External_Phdr *) (map + elf_header.e_phoff); | |
115 | for (i = 0; i < elf_header.e_phnum; i++) | |
116 | { | |
117 | phdrs[i].p_type = BYTE_GET (phdrs32[i].p_type); | |
118 | phdrs[i].p_offset = BYTE_GET (phdrs32[i].p_offset); | |
119 | phdrs[i].p_vaddr = BYTE_GET (phdrs32[i].p_vaddr); | |
120 | phdrs[i].p_paddr = BYTE_GET (phdrs32[i].p_paddr); | |
121 | phdrs[i].p_filesz = BYTE_GET (phdrs32[i].p_filesz); | |
122 | phdrs[i].p_memsz = BYTE_GET (phdrs32[i].p_memsz); | |
123 | phdrs[i].p_flags = BYTE_GET (phdrs32[i].p_flags); | |
124 | phdrs[i].p_align = BYTE_GET (phdrs32[i].p_align); | |
125 | } | |
126 | } | |
127 | else | |
128 | { | |
129 | Elf64_External_Phdr *phdrs64 | |
130 | = (Elf64_External_Phdr *) (map + elf_header.e_phoff); | |
131 | for (i = 0; i < elf_header.e_phnum; i++) | |
132 | { | |
133 | phdrs[i].p_type = BYTE_GET (phdrs64[i].p_type); | |
134 | phdrs[i].p_offset = BYTE_GET (phdrs64[i].p_offset); | |
135 | phdrs[i].p_vaddr = BYTE_GET (phdrs64[i].p_vaddr); | |
136 | phdrs[i].p_paddr = BYTE_GET (phdrs64[i].p_paddr); | |
137 | phdrs[i].p_filesz = BYTE_GET (phdrs64[i].p_filesz); | |
138 | phdrs[i].p_memsz = BYTE_GET (phdrs64[i].p_memsz); | |
139 | phdrs[i].p_flags = BYTE_GET (phdrs64[i].p_flags); | |
140 | phdrs[i].p_align = BYTE_GET (phdrs64[i].p_align); | |
141 | } | |
142 | } | |
143 | ||
144 | ret = 0; | |
145 | for (i = 0; i < elf_header.e_phnum; i++) | |
146 | if (phdrs[i].p_type == PT_NOTE) | |
147 | { | |
148 | size_t offset = phdrs[i].p_offset; | |
149 | size_t size = phdrs[i].p_filesz; | |
150 | size_t align = phdrs[i].p_align; | |
151 | char *buf = map + offset; | |
152 | char *p = buf; | |
153 | ||
154 | while (p < buf + size) | |
155 | { | |
156 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
157 | Elf_Internal_Note in; | |
158 | ||
159 | if (offsetof (Elf_External_Note, name) > buf - p + size) | |
160 | { | |
161 | ret = 1; | |
162 | goto out; | |
163 | } | |
164 | ||
165 | in.type = BYTE_GET (xnp->type); | |
166 | in.namesz = BYTE_GET (xnp->namesz); | |
167 | in.namedata = xnp->name; | |
168 | if (in.namesz > buf - in.namedata + size) | |
169 | { | |
170 | ret = 1; | |
171 | goto out; | |
172 | } | |
173 | ||
174 | in.descsz = BYTE_GET (xnp->descsz); | |
175 | in.descdata = p + ELF_NOTE_DESC_OFFSET (in.namesz, align); | |
176 | in.descpos = offset + (in.descdata - buf); | |
177 | if (in.descsz != 0 | |
178 | && (in.descdata >= buf + size | |
179 | || in.descsz > buf - in.descdata + size)) | |
180 | { | |
181 | ret = 1; | |
182 | goto out; | |
183 | } | |
184 | ||
185 | if (in.namesz == sizeof "GNU" | |
186 | && strcmp (in.namedata, "GNU") == 0 | |
187 | && in.type == NT_GNU_PROPERTY_TYPE_0) | |
188 | { | |
189 | unsigned char *ptr; | |
190 | unsigned char *ptr_end; | |
191 | ||
192 | if (in.descsz < 8 || (in.descsz % align) != 0) | |
193 | { | |
194 | ret = 1; | |
195 | goto out; | |
196 | } | |
197 | ||
198 | ptr = (unsigned char *) in.descdata; | |
199 | ptr_end = ptr + in.descsz; | |
200 | ||
201 | do | |
202 | { | |
203 | unsigned int type = byte_get (ptr, 4); | |
204 | unsigned int datasz = byte_get (ptr + 4, 4); | |
205 | unsigned int bitmask, old_bitmask; | |
206 | ||
207 | ptr += 8; | |
208 | if ((ptr + datasz) > ptr_end) | |
209 | { | |
210 | ret = 1; | |
211 | goto out; | |
212 | } | |
213 | ||
214 | if (type == GNU_PROPERTY_X86_FEATURE_1_AND) | |
215 | { | |
216 | if (datasz != 4) | |
217 | { | |
218 | ret = 1; | |
219 | goto out; | |
220 | } | |
221 | ||
222 | old_bitmask = byte_get (ptr, 4); | |
223 | bitmask = old_bitmask; | |
224 | if (enable_x86_features) | |
225 | bitmask |= enable_x86_features; | |
226 | if (disable_x86_features) | |
227 | bitmask &= ~disable_x86_features; | |
228 | if (old_bitmask != bitmask) | |
256878f3 | 229 | byte_put (ptr, bitmask, 4); |
8a6b075b L |
230 | goto out; |
231 | } | |
232 | ||
233 | ptr += ELF_ALIGN_UP (datasz, align); | |
234 | } | |
235 | while ((ptr_end - ptr) >= 8); | |
236 | } | |
237 | ||
238 | p += ELF_NOTE_NEXT_OFFSET (in.namesz, in.descsz, align); | |
239 | } | |
240 | } | |
241 | ||
dc1e8a47 | 242 | out: |
8a6b075b L |
243 | if (ret != 0) |
244 | error (_("%s: Invalid PT_NOTE segment\n"), file_name); | |
245 | ||
246 | free (phdrs); | |
247 | munmap (map, st_buf.st_size); | |
248 | ||
249 | return ret; | |
250 | } | |
251 | ||
252 | /* Set enable_x86_features and disable_x86_features for a feature | |
253 | string, FEATURE. */ | |
254 | ||
255 | static int | |
256 | elf_x86_feature (const char *feature, int enable) | |
257 | { | |
258 | unsigned int x86_feature; | |
259 | if (strcasecmp (feature, "ibt") == 0) | |
260 | x86_feature = GNU_PROPERTY_X86_FEATURE_1_IBT; | |
261 | else if (strcasecmp (feature, "shstk") == 0) | |
262 | x86_feature = GNU_PROPERTY_X86_FEATURE_1_SHSTK; | |
279d901e L |
263 | else if (strcasecmp (feature, "lam_u48") == 0) |
264 | x86_feature = GNU_PROPERTY_X86_FEATURE_1_LAM_U48; | |
265 | else if (strcasecmp (feature, "lam_u57") == 0) | |
266 | x86_feature = GNU_PROPERTY_X86_FEATURE_1_LAM_U57; | |
8a6b075b | 267 | else |
760ddef4 L |
268 | { |
269 | error (_("Unknown x86 feature: %s\n"), feature); | |
270 | return -1; | |
271 | } | |
8a6b075b L |
272 | |
273 | if (enable) | |
274 | { | |
275 | enable_x86_features |= x86_feature; | |
276 | disable_x86_features &= ~x86_feature; | |
277 | } | |
278 | else | |
279 | { | |
280 | disable_x86_features |= x86_feature; | |
281 | enable_x86_features &= ~x86_feature; | |
282 | } | |
283 | ||
284 | return 0; | |
285 | } | |
286 | #endif | |
287 | ||
6c14750f L |
288 | /* Return ELF class for a machine type, MACH. */ |
289 | ||
290 | static enum elfclass | |
291 | elf_class (int mach) | |
292 | { | |
293 | switch (mach) | |
294 | { | |
295 | case EM_386: | |
296 | case EM_IAMCU: | |
297 | return ELF_CLASS_32; | |
298 | case EM_L1OM: | |
299 | case EM_K1OM: | |
300 | return ELF_CLASS_64; | |
301 | case EM_X86_64: | |
302 | case EM_NONE: | |
303 | return ELF_CLASS_BOTH; | |
304 | default: | |
aa9f7286 | 305 | return ELF_CLASS_BOTH; |
6c14750f L |
306 | } |
307 | } | |
30fd33bb | 308 | |
30fd33bb L |
309 | static int |
310 | update_elf_header (const char *file_name, FILE *file) | |
311 | { | |
d0514c49 | 312 | int class, machine, type, status, osabi; |
30fd33bb | 313 | |
30fd33bb L |
314 | if (elf_header.e_ident[EI_VERSION] != EV_CURRENT) |
315 | { | |
3284fe0c | 316 | error |
30fd33bb L |
317 | (_("%s: Unsupported EI_VERSION: %d is not %d\n"), |
318 | file_name, elf_header.e_ident[EI_VERSION], | |
319 | EV_CURRENT); | |
320 | return 0; | |
321 | } | |
322 | ||
2dc654c3 L |
323 | /* Return if e_machine is the same as output_elf_machine. */ |
324 | if (output_elf_machine == elf_header.e_machine) | |
325 | return 1; | |
326 | ||
327 | class = elf_header.e_ident[EI_CLASS]; | |
6c14750f | 328 | machine = elf_header.e_machine; |
2dc654c3 | 329 | |
30fd33bb | 330 | /* Skip if class doesn't match. */ |
6c14750f L |
331 | if (input_elf_class == ELF_CLASS_UNKNOWN) |
332 | input_elf_class = elf_class (machine); | |
333 | ||
334 | if (input_elf_class != ELF_CLASS_BOTH | |
335 | && (int) input_elf_class != class) | |
30fd33bb | 336 | { |
3284fe0c | 337 | error |
6c14750f | 338 | (_("%s: Unmatched input EI_CLASS: %d is not %d\n"), |
2dc654c3 | 339 | file_name, class, input_elf_class); |
30fd33bb L |
340 | return 0; |
341 | } | |
342 | ||
6c14750f L |
343 | if (output_elf_class != ELF_CLASS_BOTH |
344 | && (int) output_elf_class != class) | |
345 | { | |
346 | error | |
347 | (_("%s: Unmatched output EI_CLASS: %d is not %d\n"), | |
348 | file_name, class, output_elf_class); | |
349 | return 0; | |
350 | } | |
30fd33bb L |
351 | |
352 | /* Skip if e_machine doesn't match. */ | |
2dc654c3 | 353 | if (input_elf_machine != -1 && machine != input_elf_machine) |
30fd33bb | 354 | { |
3284fe0c | 355 | error |
30fd33bb | 356 | (_("%s: Unmatched e_machine: %d is not %d\n"), |
2dc654c3 | 357 | file_name, machine, input_elf_machine); |
30fd33bb L |
358 | return 0; |
359 | } | |
360 | ||
dd35de74 L |
361 | type = elf_header.e_type; |
362 | ||
363 | /* Skip if e_type doesn't match. */ | |
364 | if (input_elf_type != -1 && type != input_elf_type) | |
365 | { | |
3284fe0c | 366 | error |
dd35de74 L |
367 | (_("%s: Unmatched e_type: %d is not %d\n"), |
368 | file_name, type, input_elf_type); | |
369 | return 0; | |
370 | } | |
371 | ||
d0514c49 L |
372 | osabi = elf_header.e_ident[EI_OSABI]; |
373 | ||
374 | /* Skip if OSABI doesn't match. */ | |
375 | if (input_elf_osabi != -1 && osabi != input_elf_osabi) | |
376 | { | |
3284fe0c | 377 | error |
d0514c49 L |
378 | (_("%s: Unmatched EI_OSABI: %d is not %d\n"), |
379 | file_name, osabi, input_elf_osabi); | |
380 | return 0; | |
381 | } | |
382 | ||
383 | /* Update e_machine, e_type and EI_OSABI. */ | |
2dc654c3 | 384 | switch (class) |
30fd33bb L |
385 | { |
386 | default: | |
387 | /* We should never get here. */ | |
388 | abort (); | |
389 | break; | |
390 | case ELFCLASS32: | |
dd35de74 L |
391 | if (output_elf_machine != -1) |
392 | BYTE_PUT (ehdr32.e_machine, output_elf_machine); | |
393 | if (output_elf_type != -1) | |
394 | BYTE_PUT (ehdr32.e_type, output_elf_type); | |
d0514c49 L |
395 | if (output_elf_osabi != -1) |
396 | ehdr32.e_ident[EI_OSABI] = output_elf_osabi; | |
30fd33bb L |
397 | status = fwrite (&ehdr32, sizeof (ehdr32), 1, file) == 1; |
398 | break; | |
399 | case ELFCLASS64: | |
dd35de74 L |
400 | if (output_elf_machine != -1) |
401 | BYTE_PUT (ehdr64.e_machine, output_elf_machine); | |
402 | if (output_elf_type != -1) | |
403 | BYTE_PUT (ehdr64.e_type, output_elf_type); | |
d0514c49 L |
404 | if (output_elf_osabi != -1) |
405 | ehdr64.e_ident[EI_OSABI] = output_elf_osabi; | |
30fd33bb L |
406 | status = fwrite (&ehdr64, sizeof (ehdr64), 1, file) == 1; |
407 | break; | |
408 | } | |
409 | ||
410 | if (status != 1) | |
3284fe0c | 411 | error (_("%s: Failed to update ELF header: %s\n"), |
30fd33bb L |
412 | file_name, strerror (errno)); |
413 | ||
414 | return status; | |
415 | } | |
416 | ||
417 | static int | |
418 | get_file_header (FILE * file) | |
419 | { | |
420 | /* Read in the identity array. */ | |
421 | if (fread (elf_header.e_ident, EI_NIDENT, 1, file) != 1) | |
422 | return 0; | |
423 | ||
675accbd L |
424 | if (elf_header.e_ident[EI_MAG0] != ELFMAG0 |
425 | || elf_header.e_ident[EI_MAG1] != ELFMAG1 | |
426 | || elf_header.e_ident[EI_MAG2] != ELFMAG2 | |
427 | || elf_header.e_ident[EI_MAG3] != ELFMAG3) | |
428 | return 0; | |
429 | ||
30fd33bb L |
430 | /* Determine how to read the rest of the header. */ |
431 | switch (elf_header.e_ident[EI_DATA]) | |
432 | { | |
433 | default: /* fall through */ | |
434 | case ELFDATANONE: /* fall through */ | |
435 | case ELFDATA2LSB: | |
436 | byte_get = byte_get_little_endian; | |
437 | byte_put = byte_put_little_endian; | |
438 | break; | |
439 | case ELFDATA2MSB: | |
440 | byte_get = byte_get_big_endian; | |
441 | byte_put = byte_put_big_endian; | |
442 | break; | |
443 | } | |
444 | ||
445 | /* Read in the rest of the header. For now we only support 32 bit | |
446 | and 64 bit ELF files. */ | |
447 | switch (elf_header.e_ident[EI_CLASS]) | |
448 | { | |
449 | default: | |
30fd33bb L |
450 | return 0; |
451 | ||
452 | case ELFCLASS32: | |
453 | if (fread (ehdr32.e_type, sizeof (ehdr32) - EI_NIDENT, | |
454 | 1, file) != 1) | |
455 | return 0; | |
456 | ||
457 | elf_header.e_type = BYTE_GET (ehdr32.e_type); | |
458 | elf_header.e_machine = BYTE_GET (ehdr32.e_machine); | |
459 | elf_header.e_version = BYTE_GET (ehdr32.e_version); | |
460 | elf_header.e_entry = BYTE_GET (ehdr32.e_entry); | |
461 | elf_header.e_phoff = BYTE_GET (ehdr32.e_phoff); | |
462 | elf_header.e_shoff = BYTE_GET (ehdr32.e_shoff); | |
463 | elf_header.e_flags = BYTE_GET (ehdr32.e_flags); | |
464 | elf_header.e_ehsize = BYTE_GET (ehdr32.e_ehsize); | |
465 | elf_header.e_phentsize = BYTE_GET (ehdr32.e_phentsize); | |
466 | elf_header.e_phnum = BYTE_GET (ehdr32.e_phnum); | |
467 | elf_header.e_shentsize = BYTE_GET (ehdr32.e_shentsize); | |
468 | elf_header.e_shnum = BYTE_GET (ehdr32.e_shnum); | |
469 | elf_header.e_shstrndx = BYTE_GET (ehdr32.e_shstrndx); | |
470 | ||
471 | memcpy (&ehdr32, &elf_header, EI_NIDENT); | |
472 | break; | |
473 | ||
474 | case ELFCLASS64: | |
475 | /* If we have been compiled with sizeof (bfd_vma) == 4, then | |
476 | we will not be able to cope with the 64bit data found in | |
477 | 64 ELF files. Detect this now and abort before we start | |
478 | overwriting things. */ | |
479 | if (sizeof (bfd_vma) < 8) | |
480 | { | |
3284fe0c | 481 | error (_("This executable has been built without support for a\n\ |
30fd33bb L |
482 | 64 bit data type and so it cannot process 64 bit ELF files.\n")); |
483 | return 0; | |
484 | } | |
485 | ||
486 | if (fread (ehdr64.e_type, sizeof (ehdr64) - EI_NIDENT, | |
487 | 1, file) != 1) | |
488 | return 0; | |
489 | ||
490 | elf_header.e_type = BYTE_GET (ehdr64.e_type); | |
491 | elf_header.e_machine = BYTE_GET (ehdr64.e_machine); | |
492 | elf_header.e_version = BYTE_GET (ehdr64.e_version); | |
493 | elf_header.e_entry = BYTE_GET (ehdr64.e_entry); | |
494 | elf_header.e_phoff = BYTE_GET (ehdr64.e_phoff); | |
495 | elf_header.e_shoff = BYTE_GET (ehdr64.e_shoff); | |
496 | elf_header.e_flags = BYTE_GET (ehdr64.e_flags); | |
497 | elf_header.e_ehsize = BYTE_GET (ehdr64.e_ehsize); | |
498 | elf_header.e_phentsize = BYTE_GET (ehdr64.e_phentsize); | |
499 | elf_header.e_phnum = BYTE_GET (ehdr64.e_phnum); | |
500 | elf_header.e_shentsize = BYTE_GET (ehdr64.e_shentsize); | |
501 | elf_header.e_shnum = BYTE_GET (ehdr64.e_shnum); | |
502 | elf_header.e_shstrndx = BYTE_GET (ehdr64.e_shstrndx); | |
503 | ||
504 | memcpy (&ehdr64, &elf_header, EI_NIDENT); | |
505 | break; | |
506 | } | |
507 | return 1; | |
508 | } | |
509 | ||
510 | /* Process one ELF object file according to the command line options. | |
511 | This file may actually be stored in an archive. The file is | |
512 | positioned at the start of the ELF object. */ | |
513 | ||
514 | static int | |
515 | process_object (const char *file_name, FILE *file) | |
516 | { | |
517 | /* Rememeber where we are. */ | |
518 | long offset = ftell (file); | |
519 | ||
520 | if (! get_file_header (file)) | |
521 | { | |
3284fe0c | 522 | error (_("%s: Failed to read ELF header\n"), file_name); |
30fd33bb L |
523 | return 1; |
524 | } | |
525 | ||
526 | /* Go to the position of the ELF header. */ | |
527 | if (fseek (file, offset, SEEK_SET) != 0) | |
528 | { | |
3284fe0c | 529 | error (_("%s: Failed to seek to ELF header\n"), file_name); |
30fd33bb L |
530 | } |
531 | ||
532 | if (! update_elf_header (file_name, file)) | |
533 | return 1; | |
534 | ||
535 | return 0; | |
536 | } | |
537 | ||
30fd33bb L |
538 | /* Process an ELF archive. |
539 | On entry the file is positioned just after the ARMAG string. */ | |
540 | ||
541 | static int | |
542 | process_archive (const char * file_name, FILE * file, | |
543 | bfd_boolean is_thin_archive) | |
544 | { | |
545 | struct archive_info arch; | |
546 | struct archive_info nested_arch; | |
547 | size_t got; | |
30fd33bb | 548 | int ret; |
780f96ae | 549 | struct stat statbuf; |
30fd33bb L |
550 | |
551 | /* The ARCH structure is used to hold information about this archive. */ | |
552 | arch.file_name = NULL; | |
553 | arch.file = NULL; | |
554 | arch.index_array = NULL; | |
555 | arch.sym_table = NULL; | |
556 | arch.longnames = NULL; | |
557 | ||
558 | /* The NESTED_ARCH structure is used as a single-item cache of information | |
559 | about a nested archive (when members of a thin archive reside within | |
560 | another regular archive file). */ | |
561 | nested_arch.file_name = NULL; | |
562 | nested_arch.file = NULL; | |
563 | nested_arch.index_array = NULL; | |
564 | nested_arch.sym_table = NULL; | |
565 | nested_arch.longnames = NULL; | |
566 | ||
780f96ae AM |
567 | if (fstat (fileno (file), &statbuf) < 0 |
568 | || setup_archive (&arch, file_name, file, statbuf.st_size, | |
569 | is_thin_archive, FALSE) != 0) | |
30fd33bb L |
570 | { |
571 | ret = 1; | |
572 | goto out; | |
573 | } | |
574 | ||
30fd33bb L |
575 | ret = 0; |
576 | ||
577 | while (1) | |
578 | { | |
579 | char * name; | |
580 | size_t namelen; | |
581 | char * qualified_name; | |
582 | ||
583 | /* Read the next archive header. */ | |
584 | if (fseek (file, arch.next_arhdr_offset, SEEK_SET) != 0) | |
585 | { | |
3284fe0c | 586 | error (_("%s: failed to seek to next archive header\n"), |
30fd33bb L |
587 | file_name); |
588 | return 1; | |
589 | } | |
590 | got = fread (&arch.arhdr, 1, sizeof arch.arhdr, file); | |
591 | if (got != sizeof arch.arhdr) | |
592 | { | |
593 | if (got == 0) | |
594 | break; | |
3284fe0c | 595 | error (_("%s: failed to read archive header\n"), |
30fd33bb L |
596 | file_name); |
597 | ret = 1; | |
598 | break; | |
599 | } | |
600 | if (memcmp (arch.arhdr.ar_fmag, ARFMAG, 2) != 0) | |
601 | { | |
3284fe0c | 602 | error (_("%s: did not find a valid archive header\n"), |
30fd33bb L |
603 | arch.file_name); |
604 | ret = 1; | |
605 | break; | |
606 | } | |
607 | ||
608 | arch.next_arhdr_offset += sizeof arch.arhdr; | |
609 | ||
610 | archive_file_size = strtoul (arch.arhdr.ar_size, NULL, 10); | |
611 | if (archive_file_size & 01) | |
612 | ++archive_file_size; | |
613 | ||
614 | name = get_archive_member_name (&arch, &nested_arch); | |
615 | if (name == NULL) | |
616 | { | |
3284fe0c | 617 | error (_("%s: bad archive file name\n"), file_name); |
30fd33bb L |
618 | ret = 1; |
619 | break; | |
620 | } | |
621 | namelen = strlen (name); | |
622 | ||
623 | qualified_name = make_qualified_name (&arch, &nested_arch, name); | |
624 | if (qualified_name == NULL) | |
625 | { | |
3284fe0c | 626 | error (_("%s: bad archive file name\n"), file_name); |
fd486f32 | 627 | free (name); |
30fd33bb L |
628 | ret = 1; |
629 | break; | |
630 | } | |
631 | ||
632 | if (is_thin_archive && arch.nested_member_origin == 0) | |
633 | { | |
634 | /* This is a proxy for an external member of a thin archive. */ | |
635 | FILE *member_file; | |
636 | char *member_file_name = adjust_relative_path (file_name, | |
637 | name, namelen); | |
fd486f32 | 638 | free (name); |
30fd33bb L |
639 | if (member_file_name == NULL) |
640 | { | |
fd486f32 | 641 | free (qualified_name); |
30fd33bb L |
642 | ret = 1; |
643 | break; | |
644 | } | |
645 | ||
646 | member_file = fopen (member_file_name, "r+b"); | |
647 | if (member_file == NULL) | |
648 | { | |
3284fe0c | 649 | error (_("Input file '%s' is not readable\n"), |
30fd33bb L |
650 | member_file_name); |
651 | free (member_file_name); | |
fd486f32 | 652 | free (qualified_name); |
30fd33bb L |
653 | ret = 1; |
654 | break; | |
655 | } | |
656 | ||
657 | archive_file_offset = arch.nested_member_origin; | |
658 | ||
659 | ret |= process_object (qualified_name, member_file); | |
660 | ||
661 | fclose (member_file); | |
662 | free (member_file_name); | |
663 | } | |
664 | else if (is_thin_archive) | |
665 | { | |
fd486f32 AM |
666 | free (name); |
667 | ||
30fd33bb L |
668 | /* This is a proxy for a member of a nested archive. */ |
669 | archive_file_offset = arch.nested_member_origin + sizeof arch.arhdr; | |
670 | ||
671 | /* The nested archive file will have been opened and setup by | |
672 | get_archive_member_name. */ | |
673 | if (fseek (nested_arch.file, archive_file_offset, | |
674 | SEEK_SET) != 0) | |
675 | { | |
3284fe0c | 676 | error (_("%s: failed to seek to archive member\n"), |
30fd33bb | 677 | nested_arch.file_name); |
fd486f32 | 678 | free (qualified_name); |
30fd33bb L |
679 | ret = 1; |
680 | break; | |
681 | } | |
682 | ||
683 | ret |= process_object (qualified_name, nested_arch.file); | |
684 | } | |
685 | else | |
686 | { | |
fd486f32 | 687 | free (name); |
30fd33bb L |
688 | archive_file_offset = arch.next_arhdr_offset; |
689 | arch.next_arhdr_offset += archive_file_size; | |
690 | ||
691 | ret |= process_object (qualified_name, file); | |
692 | } | |
693 | ||
694 | free (qualified_name); | |
695 | } | |
696 | ||
697 | out: | |
698 | if (nested_arch.file != NULL) | |
699 | fclose (nested_arch.file); | |
700 | release_archive (&nested_arch); | |
701 | release_archive (&arch); | |
702 | ||
703 | return ret; | |
704 | } | |
705 | ||
706 | static int | |
707 | check_file (const char *file_name, struct stat *statbuf_p) | |
708 | { | |
709 | struct stat statbuf; | |
710 | ||
711 | if (statbuf_p == NULL) | |
712 | statbuf_p = &statbuf; | |
713 | ||
714 | if (stat (file_name, statbuf_p) < 0) | |
715 | { | |
716 | if (errno == ENOENT) | |
3284fe0c | 717 | error (_("'%s': No such file\n"), file_name); |
30fd33bb | 718 | else |
3284fe0c | 719 | error (_("Could not locate '%s'. System error message: %s\n"), |
30fd33bb L |
720 | file_name, strerror (errno)); |
721 | return 1; | |
722 | } | |
723 | ||
724 | if (! S_ISREG (statbuf_p->st_mode)) | |
725 | { | |
3284fe0c | 726 | error (_("'%s' is not an ordinary file\n"), file_name); |
30fd33bb L |
727 | return 1; |
728 | } | |
729 | ||
730 | return 0; | |
731 | } | |
732 | ||
733 | static int | |
734 | process_file (const char *file_name) | |
735 | { | |
736 | FILE * file; | |
737 | char armag[SARMAG]; | |
738 | int ret; | |
739 | ||
740 | if (check_file (file_name, NULL)) | |
741 | return 1; | |
742 | ||
743 | file = fopen (file_name, "r+b"); | |
744 | if (file == NULL) | |
745 | { | |
3284fe0c | 746 | error (_("Input file '%s' is not readable\n"), file_name); |
30fd33bb L |
747 | return 1; |
748 | } | |
749 | ||
750 | if (fread (armag, SARMAG, 1, file) != 1) | |
751 | { | |
3284fe0c | 752 | error (_("%s: Failed to read file's magic number\n"), |
30fd33bb L |
753 | file_name); |
754 | fclose (file); | |
755 | return 1; | |
756 | } | |
757 | ||
758 | if (memcmp (armag, ARMAG, SARMAG) == 0) | |
759 | ret = process_archive (file_name, file, FALSE); | |
760 | else if (memcmp (armag, ARMAGT, SARMAG) == 0) | |
761 | ret = process_archive (file_name, file, TRUE); | |
762 | else | |
763 | { | |
764 | rewind (file); | |
765 | archive_file_size = archive_file_offset = 0; | |
766 | ret = process_object (file_name, file); | |
8a6b075b L |
767 | #ifdef HAVE_MMAP |
768 | if (!ret | |
769 | && (elf_header.e_type == ET_EXEC | |
770 | || elf_header.e_type == ET_DYN)) | |
771 | ret = update_gnu_property (file_name, file); | |
772 | #endif | |
30fd33bb L |
773 | } |
774 | ||
775 | fclose (file); | |
776 | ||
777 | return ret; | |
778 | } | |
779 | ||
d0514c49 L |
780 | static const struct |
781 | { | |
782 | int osabi; | |
783 | const char *name; | |
784 | } | |
785 | osabis[] = | |
786 | { | |
787 | { ELFOSABI_NONE, "none" }, | |
788 | { ELFOSABI_HPUX, "HPUX" }, | |
789 | { ELFOSABI_NETBSD, "NetBSD" }, | |
9c55345c TS |
790 | { ELFOSABI_GNU, "GNU" }, |
791 | { ELFOSABI_GNU, "Linux" }, | |
d0514c49 L |
792 | { ELFOSABI_SOLARIS, "Solaris" }, |
793 | { ELFOSABI_AIX, "AIX" }, | |
794 | { ELFOSABI_IRIX, "Irix" }, | |
795 | { ELFOSABI_FREEBSD, "FreeBSD" }, | |
796 | { ELFOSABI_TRU64, "TRU64" }, | |
797 | { ELFOSABI_MODESTO, "Modesto" }, | |
798 | { ELFOSABI_OPENBSD, "OpenBSD" }, | |
799 | { ELFOSABI_OPENVMS, "OpenVMS" }, | |
800 | { ELFOSABI_NSK, "NSK" }, | |
801 | { ELFOSABI_AROS, "AROS" }, | |
802 | { ELFOSABI_FENIXOS, "FenixOS" } | |
803 | }; | |
804 | ||
805 | /* Return ELFOSABI_XXX for an OSABI string, OSABI. */ | |
806 | ||
807 | static int | |
808 | elf_osabi (const char *osabi) | |
809 | { | |
810 | unsigned int i; | |
811 | ||
812 | for (i = 0; i < ARRAY_SIZE (osabis); i++) | |
813 | if (strcasecmp (osabi, osabis[i].name) == 0) | |
814 | return osabis[i].osabi; | |
815 | ||
3284fe0c | 816 | error (_("Unknown OSABI: %s\n"), osabi); |
d0514c49 L |
817 | |
818 | return -1; | |
819 | } | |
820 | ||
30fd33bb L |
821 | /* Return EM_XXX for a machine string, MACH. */ |
822 | ||
823 | static int | |
824 | elf_machine (const char *mach) | |
825 | { | |
6c14750f L |
826 | if (strcasecmp (mach, "i386") == 0) |
827 | return EM_386; | |
828 | if (strcasecmp (mach, "iamcu") == 0) | |
829 | return EM_IAMCU; | |
30fd33bb L |
830 | if (strcasecmp (mach, "l1om") == 0) |
831 | return EM_L1OM; | |
7a9068fe L |
832 | if (strcasecmp (mach, "k1om") == 0) |
833 | return EM_K1OM; | |
30fd33bb L |
834 | if (strcasecmp (mach, "x86_64") == 0) |
835 | return EM_X86_64; | |
836 | if (strcasecmp (mach, "x86-64") == 0) | |
837 | return EM_X86_64; | |
838 | if (strcasecmp (mach, "none") == 0) | |
839 | return EM_NONE; | |
840 | ||
3284fe0c | 841 | error (_("Unknown machine type: %s\n"), mach); |
30fd33bb L |
842 | |
843 | return -1; | |
844 | } | |
845 | ||
dd35de74 L |
846 | /* Return ET_XXX for a type string, TYPE. */ |
847 | ||
848 | static int | |
849 | elf_type (const char *type) | |
850 | { | |
851 | if (strcasecmp (type, "rel") == 0) | |
852 | return ET_REL; | |
853 | if (strcasecmp (type, "exec") == 0) | |
854 | return ET_EXEC; | |
855 | if (strcasecmp (type, "dyn") == 0) | |
856 | return ET_DYN; | |
857 | if (strcasecmp (type, "none") == 0) | |
858 | return ET_NONE; | |
859 | ||
3284fe0c | 860 | error (_("Unknown type: %s\n"), type); |
dd35de74 L |
861 | |
862 | return -1; | |
863 | } | |
864 | ||
30fd33bb L |
865 | enum command_line_switch |
866 | { | |
867 | OPTION_INPUT_MACH = 150, | |
dd35de74 L |
868 | OPTION_OUTPUT_MACH, |
869 | OPTION_INPUT_TYPE, | |
d0514c49 L |
870 | OPTION_OUTPUT_TYPE, |
871 | OPTION_INPUT_OSABI, | |
8a6b075b L |
872 | OPTION_OUTPUT_OSABI, |
873 | #ifdef HAVE_MMAP | |
874 | OPTION_ENABLE_X86_FEATURE, | |
875 | OPTION_DISABLE_X86_FEATURE, | |
876 | #endif | |
30fd33bb L |
877 | }; |
878 | ||
879 | static struct option options[] = | |
880 | { | |
881 | {"input-mach", required_argument, 0, OPTION_INPUT_MACH}, | |
882 | {"output-mach", required_argument, 0, OPTION_OUTPUT_MACH}, | |
dd35de74 L |
883 | {"input-type", required_argument, 0, OPTION_INPUT_TYPE}, |
884 | {"output-type", required_argument, 0, OPTION_OUTPUT_TYPE}, | |
d0514c49 L |
885 | {"input-osabi", required_argument, 0, OPTION_INPUT_OSABI}, |
886 | {"output-osabi", required_argument, 0, OPTION_OUTPUT_OSABI}, | |
8a6b075b L |
887 | #ifdef HAVE_MMAP |
888 | {"enable-x86-feature", | |
889 | required_argument, 0, OPTION_ENABLE_X86_FEATURE}, | |
890 | {"disable-x86-feature", | |
891 | required_argument, 0, OPTION_DISABLE_X86_FEATURE}, | |
892 | #endif | |
30fd33bb L |
893 | {"version", no_argument, 0, 'v'}, |
894 | {"help", no_argument, 0, 'h'}, | |
895 | {0, no_argument, 0, 0} | |
896 | }; | |
897 | ||
1e0f0b4d | 898 | ATTRIBUTE_NORETURN static void |
30fd33bb L |
899 | usage (FILE *stream, int exit_status) |
900 | { | |
9c905051 | 901 | unsigned int i; |
a4e91c46 | 902 | char *osabi = concat (osabis[0].name, NULL); |
9c905051 | 903 | |
a4e91c46 | 904 | for (i = 1; i < ARRAY_SIZE (osabis); i++) |
2e635a01 | 905 | osabi = reconcat (osabi, osabi, "|", osabis[i].name, NULL); |
9c905051 | 906 | |
d0514c49 | 907 | fprintf (stream, _("Usage: %s <option(s)> elffile(s)\n"), |
30fd33bb L |
908 | program_name); |
909 | fprintf (stream, _(" Update the ELF header of ELF files\n")); | |
910 | fprintf (stream, _(" The options are:\n")); | |
911 | fprintf (stream, _("\ | |
9c905051 L |
912 | --input-mach [none|i386|iamcu|l1om|k1om|x86_64]\n\ |
913 | Set input machine type\n\ | |
914 | --output-mach [none|i386|iamcu|l1om|k1om|x86_64]\n\ | |
915 | Set output machine type\n\ | |
916 | --input-type [none|rel|exec|dyn]\n\ | |
917 | Set input file type\n\ | |
918 | --output-type [none|rel|exec|dyn]\n\ | |
919 | Set output file type\n\ | |
920 | --input-osabi [%s]\n\ | |
921 | Set input OSABI\n\ | |
922 | --output-osabi [%s]\n\ | |
923 | Set output OSABI\n"), | |
924 | osabi, osabi); | |
8a6b075b L |
925 | #ifdef HAVE_MMAP |
926 | fprintf (stream, _("\ | |
279d901e | 927 | --enable-x86-feature [ibt|shstk|lam_u48|lam_u57]\n\ |
9c905051 | 928 | Enable x86 feature\n\ |
279d901e | 929 | --disable-x86-feature [ibt|shstk|lam_u48|lam_u57]\n\ |
9c905051 | 930 | Disable x86 feature\n")); |
8a6b075b L |
931 | #endif |
932 | fprintf (stream, _("\ | |
30fd33bb L |
933 | -h --help Display this information\n\ |
934 | -v --version Display the version number of %s\n\ | |
935 | "), | |
936 | program_name); | |
937 | if (REPORT_BUGS_TO[0] && exit_status == 0) | |
938 | fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); | |
9c905051 | 939 | free (osabi); |
30fd33bb L |
940 | exit (exit_status); |
941 | } | |
942 | ||
943 | int | |
944 | main (int argc, char ** argv) | |
945 | { | |
946 | int c, status; | |
947 | ||
948 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
949 | setlocale (LC_MESSAGES, ""); | |
950 | #endif | |
951 | #if defined (HAVE_SETLOCALE) | |
952 | setlocale (LC_CTYPE, ""); | |
953 | #endif | |
954 | bindtextdomain (PACKAGE, LOCALEDIR); | |
955 | textdomain (PACKAGE); | |
956 | ||
957 | expandargv (&argc, &argv); | |
958 | ||
959 | while ((c = getopt_long (argc, argv, "hv", | |
960 | options, (int *) 0)) != EOF) | |
961 | { | |
962 | switch (c) | |
963 | { | |
964 | case OPTION_INPUT_MACH: | |
965 | input_elf_machine = elf_machine (optarg); | |
966 | if (input_elf_machine < 0) | |
967 | return 1; | |
968 | input_elf_class = elf_class (input_elf_machine); | |
6c14750f | 969 | if (input_elf_class == ELF_CLASS_UNKNOWN) |
30fd33bb L |
970 | return 1; |
971 | break; | |
972 | ||
973 | case OPTION_OUTPUT_MACH: | |
974 | output_elf_machine = elf_machine (optarg); | |
975 | if (output_elf_machine < 0) | |
976 | return 1; | |
6c14750f L |
977 | output_elf_class = elf_class (output_elf_machine); |
978 | if (output_elf_class == ELF_CLASS_UNKNOWN) | |
979 | return 1; | |
30fd33bb L |
980 | break; |
981 | ||
dd35de74 L |
982 | case OPTION_INPUT_TYPE: |
983 | input_elf_type = elf_type (optarg); | |
984 | if (input_elf_type < 0) | |
985 | return 1; | |
986 | break; | |
987 | ||
988 | case OPTION_OUTPUT_TYPE: | |
989 | output_elf_type = elf_type (optarg); | |
990 | if (output_elf_type < 0) | |
991 | return 1; | |
992 | break; | |
993 | ||
d0514c49 L |
994 | case OPTION_INPUT_OSABI: |
995 | input_elf_osabi = elf_osabi (optarg); | |
996 | if (input_elf_osabi < 0) | |
997 | return 1; | |
998 | break; | |
999 | ||
1000 | case OPTION_OUTPUT_OSABI: | |
1001 | output_elf_osabi = elf_osabi (optarg); | |
1002 | if (output_elf_osabi < 0) | |
1003 | return 1; | |
1004 | break; | |
1005 | ||
8a6b075b L |
1006 | #ifdef HAVE_MMAP |
1007 | case OPTION_ENABLE_X86_FEATURE: | |
1008 | if (elf_x86_feature (optarg, 1) < 0) | |
1009 | return 1; | |
1010 | break; | |
1011 | ||
1012 | case OPTION_DISABLE_X86_FEATURE: | |
1013 | if (elf_x86_feature (optarg, 0) < 0) | |
1014 | return 1; | |
1015 | break; | |
1016 | #endif | |
1017 | ||
30fd33bb L |
1018 | case 'h': |
1019 | usage (stdout, 0); | |
1020 | ||
1021 | case 'v': | |
1022 | print_version (program_name); | |
1023 | break; | |
1024 | ||
1025 | default: | |
1026 | usage (stderr, 1); | |
1027 | } | |
1028 | } | |
1029 | ||
dd35de74 L |
1030 | if (optind == argc |
1031 | || (output_elf_machine == -1 | |
8a6b075b L |
1032 | #ifdef HAVE_MMAP |
1033 | && ! enable_x86_features | |
1034 | && ! disable_x86_features | |
1035 | #endif | |
d0514c49 L |
1036 | && output_elf_type == -1 |
1037 | && output_elf_osabi == -1)) | |
30fd33bb L |
1038 | usage (stderr, 1); |
1039 | ||
1040 | status = 0; | |
1041 | while (optind < argc) | |
1042 | status |= process_file (argv[optind++]); | |
1043 | ||
1044 | return status; | |
1045 | } |