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bae7f79e ILT |
1 | // fileread.h -- read files for gold -*- C++ -*- |
2 | ||
b3adc24a | 3 | // Copyright (C) 2006-2020 Free Software Foundation, Inc. |
6cb15b7f ILT |
4 | // Written by Ian Lance Taylor <iant@google.com>. |
5 | ||
6 | // This file is part of gold. | |
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, | |
21 | // MA 02110-1301, USA. | |
22 | ||
bae7f79e ILT |
23 | // Classes used to read data from binary input files. |
24 | ||
25 | #ifndef GOLD_FILEREAD_H | |
26 | #define GOLD_FILEREAD_H | |
27 | ||
bae7f79e | 28 | #include <list> |
ead1e424 ILT |
29 | #include <map> |
30 | #include <string> | |
0c0a7411 | 31 | #include <vector> |
bae7f79e | 32 | |
17a1d0a9 | 33 | #include "token.h" |
bae7f79e ILT |
34 | |
35 | namespace gold | |
36 | { | |
37 | ||
98fa85cb ILT |
38 | // Since not all system supports stat.st_mtim and struct timespec, |
39 | // we define our own structure and fill the nanoseconds if we can. | |
40 | ||
41 | struct Timespec | |
42 | { | |
43 | Timespec() | |
44 | : seconds(0), nanoseconds(0) | |
45 | { } | |
46 | ||
47 | Timespec(time_t a_seconds, int a_nanoseconds) | |
48 | : seconds(a_seconds), nanoseconds(a_nanoseconds) | |
49 | { } | |
50 | ||
51 | time_t seconds; | |
52 | int nanoseconds; | |
53 | }; | |
54 | ||
cdc29364 CC |
55 | // Get the last modified time of an unopened file. Returns false if the |
56 | // file does not exist. | |
57 | ||
58 | bool | |
59 | get_mtime(const char* filename, Timespec* mtime); | |
60 | ||
14144f39 ILT |
61 | class Position_dependent_options; |
62 | class Input_file_argument; | |
bae7f79e | 63 | class Dirsearch; |
bae7f79e ILT |
64 | class File_view; |
65 | ||
2a00e4fb ILT |
66 | // File_read manages a file descriptor and mappings for a file we are |
67 | // reading. | |
bae7f79e ILT |
68 | |
69 | class File_read | |
70 | { | |
71 | public: | |
72 | File_read() | |
2a00e4fb | 73 | : name_(), descriptor_(-1), is_descriptor_opened_(false), object_count_(0), |
2c849493 ILT |
74 | size_(0), token_(false), views_(), saved_views_(), mapped_bytes_(0), |
75 | released_(true), whole_file_view_(NULL) | |
bae7f79e | 76 | { } |
5a6f7e2d | 77 | |
bae7f79e ILT |
78 | ~File_read(); |
79 | ||
80 | // Open a file. | |
81 | bool | |
17a1d0a9 | 82 | open(const Task*, const std::string& name); |
bae7f79e | 83 | |
5a6f7e2d ILT |
84 | // Pretend to open the file, but provide the file contents. No |
85 | // actual file system activity will occur. This is used for | |
86 | // testing. | |
87 | bool | |
17a1d0a9 ILT |
88 | open(const Task*, const std::string& name, const unsigned char* contents, |
89 | off_t size); | |
5a6f7e2d | 90 | |
bae7f79e ILT |
91 | // Return the file name. |
92 | const std::string& | |
93 | filename() const | |
94 | { return this->name_; } | |
95 | ||
cb295612 ILT |
96 | // Add an object associated with a file. |
97 | void | |
98 | add_object() | |
99 | { ++this->object_count_; } | |
100 | ||
101 | // Remove an object associated with a file. | |
102 | void | |
103 | remove_object() | |
104 | { --this->object_count_; } | |
105 | ||
17a1d0a9 | 106 | // Lock the file for exclusive access within a particular Task::run |
2a00e4fb ILT |
107 | // execution. This routine may only be called when the workqueue |
108 | // lock is held. | |
bae7f79e | 109 | void |
17a1d0a9 | 110 | lock(const Task* t); |
bae7f79e | 111 | |
2a00e4fb | 112 | // Unlock the file. |
bae7f79e | 113 | void |
17a1d0a9 | 114 | unlock(const Task* t); |
4973341a | 115 | |
bae7f79e ILT |
116 | // Test whether the object is locked. |
117 | bool | |
7004837e | 118 | is_locked() const; |
bae7f79e | 119 | |
17a1d0a9 ILT |
120 | // Return the token, so that the task can be queued. |
121 | Task_token* | |
122 | token() | |
123 | { return &this->token_; } | |
124 | ||
125 | // Release the file. This indicates that we aren't going to do | |
126 | // anything further with it until it is unlocked. This is used | |
127 | // because a Task which locks the file never calls either lock or | |
128 | // unlock; it just locks the token. The basic rule is that a Task | |
129 | // which locks a file via the Task::locks interface must explicitly | |
130 | // call release() when it is done. This is not necessary for code | |
131 | // which calls unlock() on the file. | |
132 | void | |
133 | release(); | |
134 | ||
82dcae9d ILT |
135 | // Return the size of the file. |
136 | off_t | |
137 | filesize() const | |
138 | { return this->size_; } | |
139 | ||
ba45d247 | 140 | // Return a view into the file starting at file offset START for |
39d0cb0e ILT |
141 | // SIZE bytes. OFFSET is the offset into the input file for the |
142 | // file we are reading; this is zero for a normal object file, | |
143 | // non-zero for an object file in an archive. ALIGNED is true if | |
eb5b4ded CC |
144 | // the data must be naturally aligned (i.e., aligned to the size |
145 | // of a target word); this only matters when OFFSET is not zero. | |
146 | // The pointer will remain valid until the File_read is unlocked. | |
147 | // It is an error if we can not read enough data from the file. | |
148 | // The CACHE parameter is a hint as to whether it will be useful | |
149 | // to cache this data for later accesses--i.e., later calls to | |
150 | // get_view, read, or get_lasting_view which retrieve the same | |
9eb9fa57 | 151 | // data. |
bae7f79e | 152 | const unsigned char* |
39d0cb0e ILT |
153 | get_view(off_t offset, off_t start, section_size_type size, bool aligned, |
154 | bool cache); | |
bae7f79e | 155 | |
ba45d247 ILT |
156 | // Read data from the file into the buffer P starting at file offset |
157 | // START for SIZE bytes. | |
158 | void | |
2a00e4fb | 159 | read(off_t start, section_size_type size, void* p); |
ba45d247 | 160 | |
ba45d247 ILT |
161 | // Return a lasting view into the file starting at file offset START |
162 | // for SIZE bytes. This is allocated with new, and the caller is | |
163 | // responsible for deleting it when done. The data associated with | |
164 | // this view will remain valid until the view is deleted. It is an | |
39d0cb0e ILT |
165 | // error if we can not read enough data from the file. The OFFSET, |
166 | // ALIGNED and CACHE parameters are as in get_view. | |
bae7f79e | 167 | File_view* |
39d0cb0e ILT |
168 | get_lasting_view(off_t offset, off_t start, section_size_type size, |
169 | bool aligned, bool cache); | |
bae7f79e | 170 | |
cb295612 ILT |
171 | // Mark all views as no longer cached. |
172 | void | |
173 | clear_view_cache_marks(); | |
174 | ||
39d0cb0e ILT |
175 | // Discard all uncached views. This is normally done by release(), |
176 | // but not for objects in archives. FIXME: This is a complicated | |
177 | // interface, and it would be nice to have something more automatic. | |
178 | void | |
179 | clear_uncached_views() | |
a2a5469e | 180 | { this->clear_views(CLEAR_VIEWS_ARCHIVE); } |
39d0cb0e | 181 | |
cb295612 ILT |
182 | // A struct used to do a multiple read. |
183 | struct Read_multiple_entry | |
184 | { | |
185 | // The file offset of the data to read. | |
186 | off_t file_offset; | |
187 | // The amount of data to read. | |
188 | section_size_type size; | |
189 | // The buffer where the data should be placed. | |
190 | unsigned char* buffer; | |
191 | ||
192 | Read_multiple_entry(off_t o, section_size_type s, unsigned char* b) | |
193 | : file_offset(o), size(s), buffer(b) | |
194 | { } | |
195 | }; | |
196 | ||
197 | typedef std::vector<Read_multiple_entry> Read_multiple; | |
198 | ||
199 | // Read a bunch of data from the file into various different | |
200 | // locations. The vector must be sorted by ascending file_offset. | |
201 | // BASE is a base offset to be added to all the offsets in the | |
202 | // vector. | |
203 | void | |
204 | read_multiple(off_t base, const Read_multiple&); | |
205 | ||
e44fcf3b ILT |
206 | // Dump statistical information to stderr. |
207 | static void | |
208 | print_stats(); | |
209 | ||
f37b21b4 RM |
210 | // Write the dependency file listing all files read. |
211 | static void | |
212 | write_dependency_file(const char* dependency_file_name, | |
213 | const char* output_file_name); | |
214 | ||
215 | // Record that a file was read. File_read::open does this. | |
216 | static void | |
217 | record_file_read(const std::string& name); | |
218 | ||
89fc3421 CC |
219 | // Return the open file descriptor (for plugins). |
220 | int | |
0f7c0701 | 221 | descriptor() |
89fc3421 | 222 | { |
0f7c0701 | 223 | this->reopen_descriptor(); |
89fc3421 CC |
224 | return this->descriptor_; |
225 | } | |
f37b21b4 | 226 | |
98fa85cb ILT |
227 | // Return the file last modification time. Calls gold_fatal if the stat |
228 | // system call failed. | |
229 | Timespec | |
230 | get_mtime(); | |
89fc3421 | 231 | |
bae7f79e | 232 | private: |
a2a5469e CC |
233 | // Control for what views to clear. |
234 | enum Clear_views_mode | |
235 | { | |
236 | // Clear uncached views not used by an archive. | |
237 | CLEAR_VIEWS_NORMAL, | |
238 | // Clear all uncached views (including in an archive). | |
239 | CLEAR_VIEWS_ARCHIVE, | |
240 | // Clear all views (i.e., we're destroying the file). | |
241 | CLEAR_VIEWS_ALL | |
242 | }; | |
243 | ||
bae7f79e ILT |
244 | // This class may not be copied. |
245 | File_read(const File_read&); | |
246 | File_read& operator=(const File_read&); | |
247 | ||
114dfbe1 | 248 | // Total bytes mapped into memory during the link if --stats. |
e44fcf3b ILT |
249 | static unsigned long long total_mapped_bytes; |
250 | ||
114dfbe1 ILT |
251 | // Current number of bytes mapped into memory during the link if |
252 | // --stats. | |
e44fcf3b ILT |
253 | static unsigned long long current_mapped_bytes; |
254 | ||
114dfbe1 ILT |
255 | // High water mark of bytes mapped into memory during the link if |
256 | // --stats. | |
e44fcf3b ILT |
257 | static unsigned long long maximum_mapped_bytes; |
258 | ||
f37b21b4 RM |
259 | // Set of names of all files read. |
260 | static std::vector<std::string> files_read; | |
261 | ||
d1038c21 | 262 | // A view into the file. |
bae7f79e ILT |
263 | class View |
264 | { | |
265 | public: | |
2c849493 ILT |
266 | // Specifies how to dispose the data on destruction of the view. |
267 | enum Data_ownership | |
268 | { | |
269 | // Data owned by File object - nothing done in destructor. | |
270 | DATA_NOT_OWNED, | |
9b547ce6 | 271 | // Data allocated with new[] and owned by this object - should |
2c849493 ILT |
272 | // use delete[]. |
273 | DATA_ALLOCATED_ARRAY, | |
274 | // Data mmapped and owned by this object - should munmap. | |
275 | DATA_MMAPPED | |
276 | }; | |
277 | ||
2ea97941 ILT |
278 | View(off_t start, section_size_type size, const unsigned char* data, |
279 | unsigned int byteshift, bool cache, Data_ownership data_ownership) | |
280 | : start_(start), size_(size), data_(data), lock_count_(0), | |
281 | byteshift_(byteshift), cache_(cache), data_ownership_(data_ownership), | |
2c849493 | 282 | accessed_(true) |
bae7f79e ILT |
283 | { } |
284 | ||
285 | ~View(); | |
286 | ||
287 | off_t | |
288 | start() const | |
289 | { return this->start_; } | |
290 | ||
8383303e | 291 | section_size_type |
bae7f79e ILT |
292 | size() const |
293 | { return this->size_; } | |
294 | ||
e214a02b | 295 | const unsigned char* |
bae7f79e ILT |
296 | data() const |
297 | { return this->data_; } | |
298 | ||
299 | void | |
300 | lock(); | |
301 | ||
302 | void | |
303 | unlock(); | |
304 | ||
305 | bool | |
306 | is_locked(); | |
307 | ||
39d0cb0e ILT |
308 | unsigned int |
309 | byteshift() const | |
310 | { return this->byteshift_; } | |
311 | ||
9eb9fa57 ILT |
312 | void |
313 | set_cache() | |
314 | { this->cache_ = true; } | |
315 | ||
cb295612 ILT |
316 | void |
317 | clear_cache() | |
318 | { this->cache_ = false; } | |
319 | ||
9eb9fa57 ILT |
320 | bool |
321 | should_cache() const | |
322 | { return this->cache_; } | |
323 | ||
cb295612 ILT |
324 | void |
325 | set_accessed() | |
326 | { this->accessed_ = true; } | |
327 | ||
328 | void | |
329 | clear_accessed() | |
330 | { this->accessed_= false; } | |
331 | ||
332 | bool | |
333 | accessed() const | |
334 | { return this->accessed_; } | |
335 | ||
a2a5469e CC |
336 | // Returns TRUE if this view contains permanent data -- e.g., data that |
337 | // was supplied by the owner of the File object. | |
338 | bool | |
339 | is_permanent_view() const | |
340 | { return this->data_ownership_ == DATA_NOT_OWNED; } | |
341 | ||
bae7f79e ILT |
342 | private: |
343 | View(const View&); | |
344 | View& operator=(const View&); | |
345 | ||
39d0cb0e | 346 | // The file offset of the start of the view. |
bae7f79e | 347 | off_t start_; |
39d0cb0e | 348 | // The size of the view. |
8383303e | 349 | section_size_type size_; |
39d0cb0e | 350 | // A pointer to the actual bytes. |
e214a02b | 351 | const unsigned char* data_; |
39d0cb0e | 352 | // The number of locks on this view. |
bae7f79e | 353 | int lock_count_; |
39d0cb0e ILT |
354 | // The number of bytes that the view is shifted relative to the |
355 | // underlying file. This is used to align data. This is normally | |
356 | // zero, except possibly for an object in an archive. | |
357 | unsigned int byteshift_; | |
358 | // Whether the view is cached. | |
9eb9fa57 | 359 | bool cache_; |
39d0cb0e ILT |
360 | // Whether the view is mapped into memory. If not, data_ points |
361 | // to memory allocated using new[]. | |
2c849493 | 362 | Data_ownership data_ownership_; |
39d0cb0e | 363 | // Whether the view has been accessed recently. |
cb295612 | 364 | bool accessed_; |
bae7f79e ILT |
365 | }; |
366 | ||
e44fcf3b | 367 | friend class View; |
bae7f79e ILT |
368 | friend class File_view; |
369 | ||
39d0cb0e ILT |
370 | // The type of a mapping from page start and byte shift to views. |
371 | typedef std::map<std::pair<off_t, unsigned int>, View*> Views; | |
372 | ||
373 | // A simple list of Views. | |
374 | typedef std::list<View*> Saved_views; | |
375 | ||
2a00e4fb ILT |
376 | // Open the descriptor if necessary. |
377 | void | |
378 | reopen_descriptor(); | |
379 | ||
ead1e424 | 380 | // Find a view into the file. |
bae7f79e | 381 | View* |
39d0cb0e ILT |
382 | find_view(off_t start, section_size_type size, unsigned int byteshift, |
383 | View** vshifted) const; | |
bae7f79e | 384 | |
ead1e424 | 385 | // Read data from the file into a buffer. |
82dcae9d | 386 | void |
2a00e4fb | 387 | do_read(off_t start, section_size_type size, void* p); |
bae7f79e | 388 | |
39d0cb0e ILT |
389 | // Add a view. |
390 | void | |
391 | add_view(View*); | |
392 | ||
393 | // Make a view into the file. | |
394 | View* | |
395 | make_view(off_t start, section_size_type size, unsigned int byteshift, | |
396 | bool cache); | |
397 | ||
ead1e424 | 398 | // Find or make a view into the file. |
bae7f79e | 399 | View* |
39d0cb0e ILT |
400 | find_or_make_view(off_t offset, off_t start, section_size_type size, |
401 | bool aligned, bool cache); | |
bae7f79e | 402 | |
ead1e424 | 403 | // Clear the file views. |
bae7f79e | 404 | void |
a2a5469e | 405 | clear_views(Clear_views_mode); |
bae7f79e | 406 | |
ead1e424 ILT |
407 | // The size of a file page for buffering data. |
408 | static const off_t page_size = 8192; | |
409 | ||
410 | // Given a file offset, return the page offset. | |
411 | static off_t | |
412 | page_offset(off_t file_offset) | |
413 | { return file_offset & ~ (page_size - 1); } | |
414 | ||
415 | // Given a file size, return the size to read integral pages. | |
416 | static off_t | |
417 | pages(off_t file_size) | |
418 | { return (file_size + (page_size - 1)) & ~ (page_size - 1); } | |
419 | ||
cb295612 ILT |
420 | // The maximum number of entries we will pass to ::readv. |
421 | static const size_t max_readv_entries = 128; | |
422 | ||
423 | // Use readv to read data. | |
424 | void | |
425 | do_readv(off_t base, const Read_multiple&, size_t start, size_t count); | |
426 | ||
ead1e424 | 427 | // File name. |
bae7f79e | 428 | std::string name_; |
ead1e424 | 429 | // File descriptor. |
bae7f79e | 430 | int descriptor_; |
2a00e4fb ILT |
431 | // Whether we have regained the descriptor after releasing the file. |
432 | bool is_descriptor_opened_; | |
cb295612 ILT |
433 | // The number of objects associated with this file. This will be |
434 | // more than 1 in the case of an archive. | |
435 | int object_count_; | |
82dcae9d ILT |
436 | // File size. |
437 | off_t size_; | |
17a1d0a9 ILT |
438 | // A token used to lock the file. |
439 | Task_token token_; | |
ead1e424 ILT |
440 | // Buffered views into the file. |
441 | Views views_; | |
442 | // List of views which were locked but had to be removed from views_ | |
443 | // because they were not large enough. | |
444 | Saved_views saved_views_; | |
e44fcf3b ILT |
445 | // Total amount of space mapped into memory. This is only changed |
446 | // while the file is locked. When we unlock the file, we transfer | |
447 | // the total to total_mapped_bytes, and reset this to zero. | |
448 | size_t mapped_bytes_; | |
17a1d0a9 ILT |
449 | // Whether the file was released. |
450 | bool released_; | |
2c849493 ILT |
451 | // A view containing the whole file. May be NULL if we mmap only |
452 | // the relevant parts of the file. Not NULL if: | |
453 | // - Flag --mmap_whole_files is set (default on 64-bit hosts). | |
454 | // - The contents was specified in the constructor. Used only for | |
455 | // testing purposes). | |
456 | View* whole_file_view_; | |
bae7f79e ILT |
457 | }; |
458 | ||
459 | // A view of file data that persists even when the file is unlocked. | |
460 | // Callers should destroy these when no longer required. These are | |
461 | // obtained form File_read::get_lasting_view. They may only be | |
462 | // destroyed when the underlying File_read is locked. | |
463 | ||
464 | class File_view | |
465 | { | |
466 | public: | |
467 | // This may only be called when the underlying File_read is locked. | |
468 | ~File_view(); | |
469 | ||
470 | // Return a pointer to the data associated with this view. | |
471 | const unsigned char* | |
472 | data() const | |
473 | { return this->data_; } | |
474 | ||
475 | private: | |
476 | File_view(const File_view&); | |
477 | File_view& operator=(const File_view&); | |
478 | ||
479 | friend class File_read; | |
480 | ||
481 | // Callers have to get these via File_read::get_lasting_view. | |
2ea97941 ILT |
482 | File_view(File_read& file, File_read::View* view, const unsigned char* data) |
483 | : file_(file), view_(view), data_(data) | |
bae7f79e ILT |
484 | { } |
485 | ||
486 | File_read& file_; | |
487 | File_read::View* view_; | |
488 | const unsigned char* data_; | |
489 | }; | |
490 | ||
bae7f79e ILT |
491 | // All the information we hold for a single input file. This can be |
492 | // an object file, a shared library, or an archive. | |
493 | ||
494 | class Input_file | |
495 | { | |
496 | public: | |
10165461 DK |
497 | enum Format |
498 | { | |
499 | FORMAT_NONE, | |
500 | FORMAT_ELF, | |
501 | FORMAT_BINARY | |
502 | }; | |
503 | ||
5a6f7e2d | 504 | Input_file(const Input_file_argument* input_argument) |
e2aacd2c | 505 | : input_argument_(input_argument), found_name_(), file_(), |
10165461 | 506 | is_in_sysroot_(false), format_(FORMAT_NONE) |
bae7f79e ILT |
507 | { } |
508 | ||
effe8365 CC |
509 | // Create an input file given just a filename. |
510 | Input_file(const char* name); | |
511 | ||
5a6f7e2d ILT |
512 | // Create an input file with the contents already provided. This is |
513 | // only used for testing. With this path, don't call the open | |
514 | // method. | |
17a1d0a9 ILT |
515 | Input_file(const Task*, const char* name, const unsigned char* contents, |
516 | off_t size); | |
5a6f7e2d | 517 | |
15f8229b ILT |
518 | // Return the command line argument. |
519 | const Input_file_argument* | |
520 | input_file_argument() const | |
521 | { return this->input_argument_; } | |
522 | ||
523 | // Return whether this is a file that we will search for in the list | |
524 | // of directories. | |
525 | bool | |
526 | will_search_for() const; | |
527 | ||
75f2446e | 528 | // Open the file. If the open fails, this will report an error and |
15f8229b ILT |
529 | // return false. If there is a search, it starts at directory |
530 | // *PINDEX. *PINDEX should be initialized to zero. It may be | |
531 | // restarted to find the next file with a matching name by | |
532 | // incrementing the result and calling this again. | |
75f2446e | 533 | bool |
ca09d69a | 534 | open(const Dirsearch&, const Task*, int* pindex); |
bae7f79e | 535 | |
e2aacd2c | 536 | // Return the name given by the user. For -lc this will return "c". |
bae7f79e | 537 | const char* |
14144f39 | 538 | name() const; |
bae7f79e | 539 | |
e2aacd2c ILT |
540 | // Return the file name. For -lc this will return something like |
541 | // "/usr/lib/libc.so". | |
bae7f79e ILT |
542 | const std::string& |
543 | filename() const | |
544 | { return this->file_.filename(); } | |
545 | ||
e2aacd2c ILT |
546 | // Return the name under which we found the file, corresponding to |
547 | // the command line. For -lc this will return something like | |
548 | // "libc.so". | |
549 | const std::string& | |
550 | found_name() const | |
551 | { return this->found_name_; } | |
552 | ||
4973341a ILT |
553 | // Return the position dependent options. |
554 | const Position_dependent_options& | |
14144f39 | 555 | options() const; |
4973341a ILT |
556 | |
557 | // Return the file. | |
bae7f79e ILT |
558 | File_read& |
559 | file() | |
560 | { return this->file_; } | |
561 | ||
7004837e ILT |
562 | const File_read& |
563 | file() const | |
564 | { return this->file_; } | |
565 | ||
ad2d6943 ILT |
566 | // Whether we found the file in a directory in the system root. |
567 | bool | |
568 | is_in_sysroot() const | |
569 | { return this->is_in_sysroot_; } | |
570 | ||
fd9d194f ILT |
571 | // Whether this file is in a system directory. |
572 | bool | |
573 | is_in_system_directory() const; | |
574 | ||
88dd47ac ILT |
575 | // Return whether this file is to be read only for its symbols. |
576 | bool | |
577 | just_symbols() const; | |
578 | ||
10165461 DK |
579 | // Return the format of the unconverted input file. |
580 | Format | |
581 | format() const | |
582 | { return this->format_; } | |
583 | ||
69517287 RÁE |
584 | // Try to find a file in the extra search dirs. Returns true on success. |
585 | static bool | |
586 | try_extra_search_path(int* pindex, | |
587 | const Input_file_argument* input_argument, | |
588 | std::string filename, std::string* found_name, | |
589 | std::string* namep); | |
590 | ||
591 | // Find the actual file. | |
592 | static bool | |
593 | find_file(const Dirsearch& dirpath, int* pindex, | |
594 | const Input_file_argument* input_argument, | |
595 | bool* is_in_sysroot, | |
596 | std::string* found_name, std::string* namep); | |
597 | ||
bae7f79e | 598 | private: |
ead1e424 ILT |
599 | Input_file(const Input_file&); |
600 | Input_file& operator=(const Input_file&); | |
601 | ||
bc644c6c ILT |
602 | // Open a binary file. |
603 | bool | |
f1ed28fb | 604 | open_binary(const Task* task, const std::string& name); |
bc644c6c | 605 | |
ad2d6943 | 606 | // The argument from the command line. |
5a6f7e2d | 607 | const Input_file_argument* input_argument_; |
e2aacd2c ILT |
608 | // The name under which we opened the file. This is like the name |
609 | // on the command line, but -lc turns into libc.so (or whatever). | |
610 | // It only includes the full path if the path was on the command | |
611 | // line. | |
612 | std::string found_name_; | |
ad2d6943 | 613 | // The file after we open it. |
bae7f79e | 614 | File_read file_; |
ad2d6943 ILT |
615 | // Whether we found the file in a directory in the system root. |
616 | bool is_in_sysroot_; | |
10165461 DK |
617 | // Format of unconverted input file. |
618 | Format format_; | |
bae7f79e ILT |
619 | }; |
620 | ||
621 | } // end namespace gold | |
622 | ||
623 | #endif // !defined(GOLD_FILEREAD_H) |