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Safety check for "diamond dependencies" on netmodules
[mono-project.git] / mono / metadata / image.c
blob4724a2b2beae709bec7d43fd1e9adc1b97fbbeb5
1 /*
2 * image.c: Routines for manipulating an image stored in an
3 * extended PE/COFF file.
4 *
5 * Authors:
6 * Miguel de Icaza (miguel@ximian.com)
7 * Paolo Molaro (lupus@ximian.com)
8 *
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 *
12 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
13 */
14 #include <config.h>
15 #include <stdio.h>
16 #include <glib.h>
17 #include <errno.h>
18 #include <time.h>
19 #include <string.h>
20 #include "image.h"
21 #include "cil-coff.h"
22 #include "mono-endian.h"
23 #include "tabledefs.h"
24 #include "tokentype.h"
25 #include "metadata-internals.h"
26 #include "profiler-private.h"
27 #include "loader.h"
28 #include "marshal.h"
29 #include "coree.h"
30 #include <mono/io-layer/io-layer.h>
31 #include <mono/utils/mono-logger-internals.h>
32 #include <mono/utils/mono-path.h>
33 #include <mono/utils/mono-mmap.h>
34 #include <mono/utils/mono-io-portability.h>
35 #include <mono/utils/atomic.h>
36 #include <mono/metadata/class-internals.h>
37 #include <mono/metadata/assembly.h>
38 #include <mono/metadata/object-internals.h>
39 #include <mono/metadata/security-core-clr.h>
40 #include <mono/metadata/verify-internals.h>
41 #include <mono/metadata/verify.h>
42 #include <mono/metadata/image-internals.h>
43 #include <sys/types.h>
44 #include <sys/stat.h>
45 #ifdef HAVE_UNISTD_H
46 #include <unistd.h>
47 #endif
48
49 #define INVALID_ADDRESS 0xffffffff
50
51 // Amount initially reserved in each image's mempool.
52 // FIXME: This number is arbitrary, a more practical number should be found
53 #define INITIAL_IMAGE_SIZE 512
54
55 /*
56 * The "loaded images" hashes keep track of the various assemblies and netmodules loaded
57 * There are four, for all combinations of [look up by path or assembly name?]
58 * and [normal or reflection-only load?, as in Assembly.ReflectionOnlyLoad]
59 */
60 enum {
61 IMAGES_HASH_PATH = 0,
62 IMAGES_HASH_PATH_REFONLY = 1,
63 IMAGES_HASH_NAME = 2,
64 IMAGES_HASH_NAME_REFONLY = 3,
65 IMAGES_HASH_COUNT = 4
66 };
67 static GHashTable *loaded_images_hashes [4] = {NULL, NULL, NULL, NULL};
68
69 static GHashTable *
70 get_loaded_images_hash (gboolean refonly)
71 {
72 int idx = refonly ? IMAGES_HASH_PATH_REFONLY : IMAGES_HASH_PATH;
73 return loaded_images_hashes [idx];
74 }
75
76 static GHashTable *
77 get_loaded_images_by_name_hash (gboolean refonly)
78 {
79 int idx = refonly ? IMAGES_HASH_NAME_REFONLY : IMAGES_HASH_NAME;
80 return loaded_images_hashes [idx];
81 }
82
83 // Change the assembly set in `image` to the assembly set in `assemblyImage`. Halt if overwriting is attempted.
84 // Can be used on modules loaded through either the "file" or "module" mechanism
85 static gboolean
86 assign_assembly_parent_for_netmodule (MonoImage *image, MonoImage *assemblyImage, MonoError *error)
87 {
88 // Assembly to assign
89 MonoAssembly *assembly = assemblyImage->assembly;
90
91 while (1) {
92 // Assembly currently assigned
93 MonoAssembly *assemblyOld = image->assembly;
94 if (assemblyOld) {
95 if (assemblyOld == assembly)
96 return TRUE;
97 mono_error_set_bad_image (error, assemblyImage, "Attempted to load module %s which has already been loaded by assembly %s. This is not supported in Mono.", image->name, assemblyOld->image->name);
98 return FALSE;
99 }
100 gpointer result = InterlockedExchangePointer((gpointer *)&image->assembly, assembly);
101 if (result == assembly)
102 return TRUE;
103 }
104 }
105
106 static gboolean debug_assembly_unload = FALSE;
107
108 #define mono_images_lock() if (mutex_inited) mono_os_mutex_lock (&images_mutex)
109 #define mono_images_unlock() if (mutex_inited) mono_os_mutex_unlock (&images_mutex)
110 static gboolean mutex_inited;
111 static mono_mutex_t images_mutex;
112
113 static void install_pe_loader (void);
114
115 typedef struct ImageUnloadHook ImageUnloadHook;
116 struct ImageUnloadHook {
117 MonoImageUnloadFunc func;
118 gpointer user_data;
119 };
120
121 static GSList *image_unload_hooks;
122
123 void
124 mono_install_image_unload_hook (MonoImageUnloadFunc func, gpointer user_data)
125 {
126 ImageUnloadHook *hook;
127
128 g_return_if_fail (func != NULL);
129
130 hook = g_new0 (ImageUnloadHook, 1);
131 hook->func = func;
132 hook->user_data = user_data;
133 image_unload_hooks = g_slist_prepend (image_unload_hooks, hook);
134 }
135
136 void
137 mono_remove_image_unload_hook (MonoImageUnloadFunc func, gpointer user_data)
138 {
139 GSList *l;
140 ImageUnloadHook *hook;
141
142 for (l = image_unload_hooks; l; l = l->next) {
143 hook = (ImageUnloadHook *)l->data;
144
145 if (hook->func == func && hook->user_data == user_data) {
146 g_free (hook);
147 image_unload_hooks = g_slist_delete_link (image_unload_hooks, l);
148 break;
149 }
150 }
151 }
152
153 static void
154 mono_image_invoke_unload_hook (MonoImage *image)
155 {
156 GSList *l;
157 ImageUnloadHook *hook;
158
159 for (l = image_unload_hooks; l; l = l->next) {
160 hook = (ImageUnloadHook *)l->data;
161
162 hook->func (image, hook->user_data);
163 }
164 }
165
166 static GSList *image_loaders;
167
168 void
169 mono_install_image_loader (const MonoImageLoader *loader)
170 {
171 image_loaders = g_slist_prepend (image_loaders, (MonoImageLoader*)loader);
172 }
173
174 /* returns offset relative to image->raw_data */
175 guint32
176 mono_cli_rva_image_map (MonoImage *image, guint32 addr)
177 {
178 MonoCLIImageInfo *iinfo = (MonoCLIImageInfo *)image->image_info;
179 const int top = iinfo->cli_section_count;
180 MonoSectionTable *tables = iinfo->cli_section_tables;
181 int i;
182
183 if (image->metadata_only)
184 return addr;
185
186 for (i = 0; i < top; i++){
187 if ((addr >= tables->st_virtual_address) &&
188 (addr < tables->st_virtual_address + tables->st_raw_data_size)){
189 #ifdef HOST_WIN32
190 if (image->is_module_handle)
191 return addr;
192 #endif
193 return addr - tables->st_virtual_address + tables->st_raw_data_ptr;
194 }
195 tables++;
196 }
197 return INVALID_ADDRESS;
198 }
199
200 /**
201 * mono_images_rva_map:
202 * @image: a MonoImage
203 * @addr: relative virtual address (RVA)
204 *
205 * This is a low-level routine used by the runtime to map relative
206 * virtual address (RVA) into their location in memory.
207 *
208 * Returns: the address in memory for the given RVA, or NULL if the
209 * RVA is not valid for this image.
210 */
211 char *
212 mono_image_rva_map (MonoImage *image, guint32 addr)
213 {
214 MonoCLIImageInfo *iinfo = (MonoCLIImageInfo *)image->image_info;
215 const int top = iinfo->cli_section_count;
216 MonoSectionTable *tables = iinfo->cli_section_tables;
217 int i;
218
219 #ifdef HOST_WIN32
220 if (image->is_module_handle) {
221 if (addr && addr < image->raw_data_len)
222 return image->raw_data + addr;
223 else
224 return NULL;
225 }
226 #endif
227
228 for (i = 0; i < top; i++){
229 if ((addr >= tables->st_virtual_address) &&
230 (addr < tables->st_virtual_address + tables->st_raw_data_size)){
231 if (!iinfo->cli_sections [i]) {
232 if (!mono_image_ensure_section_idx (image, i))
233 return NULL;
234 }
235 return (char*)iinfo->cli_sections [i] +
236 (addr - tables->st_virtual_address);
237 }
238 tables++;
239 }
240 return NULL;
241 }
242
243 /**
244 * mono_images_init:
245 *
246 * Initialize the global variables used by this module.
247 */
248 void
249 mono_images_init (void)
250 {
251 mono_os_mutex_init_recursive (&images_mutex);
252
253 int hash_idx;
254 for(hash_idx = 0; hash_idx < IMAGES_HASH_COUNT; hash_idx++)
255 loaded_images_hashes [hash_idx] = g_hash_table_new (g_str_hash, g_str_equal);
256
257 debug_assembly_unload = g_getenv ("MONO_DEBUG_ASSEMBLY_UNLOAD") != NULL;
258
259 install_pe_loader ();
260
261 mutex_inited = TRUE;
262 }
263
264 /**
265 * mono_images_cleanup:
266 *
267 * Free all resources used by this module.
268 */
269 void
270 mono_images_cleanup (void)
271 {
272 GHashTableIter iter;
273 MonoImage *image;
274
275 mono_os_mutex_destroy (&images_mutex);
276
277 // If an assembly image is still loaded at shutdown, this could indicate managed code is still running.
278 // Reflection-only images being still loaded doesn't indicate anything as harmful, so we don't check for it.
279 g_hash_table_iter_init (&iter, get_loaded_images_hash (FALSE));
280 while (g_hash_table_iter_next (&iter, NULL, (void**)&image))
281 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly image '%s' still loaded at shutdown.", image->name);
282
283 int hash_idx;
284 for(hash_idx = 0; hash_idx < IMAGES_HASH_COUNT; hash_idx++)
285 g_hash_table_destroy (loaded_images_hashes [hash_idx]);
286
287 mutex_inited = FALSE;
288 }
289
290 /**
291 * mono_image_ensure_section_idx:
292 * @image: The image we are operating on
293 * @section: section number that we will load/map into memory
294 *
295 * This routine makes sure that we have an in-memory copy of
296 * an image section (.text, .rsrc, .data).
297 *
298 * Returns: TRUE on success
299 */
300 int
301 mono_image_ensure_section_idx (MonoImage *image, int section)
302 {
303 MonoCLIImageInfo *iinfo = (MonoCLIImageInfo *)image->image_info;
304 MonoSectionTable *sect;
305
306 g_return_val_if_fail (section < iinfo->cli_section_count, FALSE);
307
308 if (iinfo->cli_sections [section] != NULL)
309 return TRUE;
310
311 sect = &iinfo->cli_section_tables [section];
312
313 if (sect->st_raw_data_ptr + sect->st_raw_data_size > image->raw_data_len)
314 return FALSE;
315 #ifdef HOST_WIN32
316 if (image->is_module_handle)
317 iinfo->cli_sections [section] = image->raw_data + sect->st_virtual_address;
318 else
319 #endif
320 /* FIXME: we ignore the writable flag since we don't patch the binary */
321 iinfo->cli_sections [section] = image->raw_data + sect->st_raw_data_ptr;
322 return TRUE;
323 }
324
325 /**
326 * mono_image_ensure_section:
327 * @image: The image we are operating on
328 * @section: section name that we will load/map into memory
329 *
330 * This routine makes sure that we have an in-memory copy of
331 * an image section (.text, .rsrc, .data).
332 *
333 * Returns: TRUE on success
334 */
335 int
336 mono_image_ensure_section (MonoImage *image, const char *section)
337 {
338 MonoCLIImageInfo *ii = (MonoCLIImageInfo *)image->image_info;
339 int i;
340
341 for (i = 0; i < ii->cli_section_count; i++){
342 if (strncmp (ii->cli_section_tables [i].st_name, section, 8) != 0)
343 continue;
344
345 return mono_image_ensure_section_idx (image, i);
346 }
347 return FALSE;
348 }
349
350 static int
351 load_section_tables (MonoImage *image, MonoCLIImageInfo *iinfo, guint32 offset)
352 {
353 const int top = iinfo->cli_header.coff.coff_sections;
354 int i;
355
356 iinfo->cli_section_count = top;
357 iinfo->cli_section_tables = g_new0 (MonoSectionTable, top);
358 iinfo->cli_sections = g_new0 (void *, top);
359
360 for (i = 0; i < top; i++){
361 MonoSectionTable *t = &iinfo->cli_section_tables [i];
362
363 if (offset + sizeof (MonoSectionTable) > image->raw_data_len)
364 return FALSE;
365 memcpy (t, image->raw_data + offset, sizeof (MonoSectionTable));
366 offset += sizeof (MonoSectionTable);
367
368 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
369 t->st_virtual_size = GUINT32_FROM_LE (t->st_virtual_size);
370 t->st_virtual_address = GUINT32_FROM_LE (t->st_virtual_address);
371 t->st_raw_data_size = GUINT32_FROM_LE (t->st_raw_data_size);
372 t->st_raw_data_ptr = GUINT32_FROM_LE (t->st_raw_data_ptr);
373 t->st_reloc_ptr = GUINT32_FROM_LE (t->st_reloc_ptr);
374 t->st_lineno_ptr = GUINT32_FROM_LE (t->st_lineno_ptr);
375 t->st_reloc_count = GUINT16_FROM_LE (t->st_reloc_count);
376 t->st_line_count = GUINT16_FROM_LE (t->st_line_count);
377 t->st_flags = GUINT32_FROM_LE (t->st_flags);
378 #endif
379 /* consistency checks here */
380 }
381
382 return TRUE;
383 }
384
385 gboolean
386 mono_image_load_cli_header (MonoImage *image, MonoCLIImageInfo *iinfo)
387 {
388 guint32 offset;
389
390 offset = mono_cli_rva_image_map (image, iinfo->cli_header.datadir.pe_cli_header.rva);
391 if (offset == INVALID_ADDRESS)
392 return FALSE;
393
394 if (offset + sizeof (MonoCLIHeader) > image->raw_data_len)
395 return FALSE;
396 memcpy (&iinfo->cli_cli_header, image->raw_data + offset, sizeof (MonoCLIHeader));
397
398 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
399 #define SWAP32(x) (x) = GUINT32_FROM_LE ((x))
400 #define SWAP16(x) (x) = GUINT16_FROM_LE ((x))
401 #define SWAPPDE(x) do { (x).rva = GUINT32_FROM_LE ((x).rva); (x).size = GUINT32_FROM_LE ((x).size);} while (0)
402 SWAP32 (iinfo->cli_cli_header.ch_size);
403 SWAP32 (iinfo->cli_cli_header.ch_flags);
404 SWAP32 (iinfo->cli_cli_header.ch_entry_point);
405 SWAP16 (iinfo->cli_cli_header.ch_runtime_major);
406 SWAP16 (iinfo->cli_cli_header.ch_runtime_minor);
407 SWAPPDE (iinfo->cli_cli_header.ch_metadata);
408 SWAPPDE (iinfo->cli_cli_header.ch_resources);
409 SWAPPDE (iinfo->cli_cli_header.ch_strong_name);
410 SWAPPDE (iinfo->cli_cli_header.ch_code_manager_table);
411 SWAPPDE (iinfo->cli_cli_header.ch_vtable_fixups);
412 SWAPPDE (iinfo->cli_cli_header.ch_export_address_table_jumps);
413 SWAPPDE (iinfo->cli_cli_header.ch_eeinfo_table);
414 SWAPPDE (iinfo->cli_cli_header.ch_helper_table);
415 SWAPPDE (iinfo->cli_cli_header.ch_dynamic_info);
416 SWAPPDE (iinfo->cli_cli_header.ch_delay_load_info);
417 SWAPPDE (iinfo->cli_cli_header.ch_module_image);
418 SWAPPDE (iinfo->cli_cli_header.ch_external_fixups);
419 SWAPPDE (iinfo->cli_cli_header.ch_ridmap);
420 SWAPPDE (iinfo->cli_cli_header.ch_debug_map);
421 SWAPPDE (iinfo->cli_cli_header.ch_ip_map);
422 #undef SWAP32
423 #undef SWAP16
424 #undef SWAPPDE
425 #endif
426 /* Catch new uses of the fields that are supposed to be zero */
427
428 if ((iinfo->cli_cli_header.ch_eeinfo_table.rva != 0) ||
429 (iinfo->cli_cli_header.ch_helper_table.rva != 0) ||
430 (iinfo->cli_cli_header.ch_dynamic_info.rva != 0) ||
431 (iinfo->cli_cli_header.ch_delay_load_info.rva != 0) ||
432 (iinfo->cli_cli_header.ch_module_image.rva != 0) ||
433 (iinfo->cli_cli_header.ch_external_fixups.rva != 0) ||
434 (iinfo->cli_cli_header.ch_ridmap.rva != 0) ||
435 (iinfo->cli_cli_header.ch_debug_map.rva != 0) ||
436 (iinfo->cli_cli_header.ch_ip_map.rva != 0)){
437
438 /*
439 * No need to scare people who are testing this, I am just
440 * labelling this as a LAMESPEC
441 */
442 /* g_warning ("Some fields in the CLI header which should have been zero are not zero"); */
443
444 }
445
446 return TRUE;
447 }
448
449 static gboolean
450 load_metadata_ptrs (MonoImage *image, MonoCLIImageInfo *iinfo)
451 {
452 guint32 offset, size;
453 guint16 streams;
454 int i;
455 guint32 pad;
456 char *ptr;
457
458 offset = mono_cli_rva_image_map (image, iinfo->cli_cli_header.ch_metadata.rva);
459 if (offset == INVALID_ADDRESS)
460 return FALSE;
461
462 size = iinfo->cli_cli_header.ch_metadata.size;
463
464 if (offset + size > image->raw_data_len)
465 return FALSE;
466 image->raw_metadata = image->raw_data + offset;
467
468 /* 24.2.1: Metadata root starts here */
469 ptr = image->raw_metadata;
470
471 if (strncmp (ptr, "BSJB", 4) == 0){
472 guint32 version_string_len;
473
474 ptr += 4;
475 image->md_version_major = read16 (ptr);
476 ptr += 2;
477 image->md_version_minor = read16 (ptr);
478 ptr += 6;
479
480 version_string_len = read32 (ptr);
481 ptr += 4;
482 image->version = g_strndup (ptr, version_string_len);
483 ptr += version_string_len;
484 pad = ptr - image->raw_metadata;
485 if (pad % 4)
486 ptr += 4 - (pad % 4);
487 } else
488 return FALSE;
489
490 /* skip over flags */
491 ptr += 2;
492
493 streams = read16 (ptr);
494 ptr += 2;
495
496 for (i = 0; i < streams; i++){
497 if (strncmp (ptr + 8, "#~", 3) == 0){
498 image->heap_tables.data = image->raw_metadata + read32 (ptr);
499 image->heap_tables.size = read32 (ptr + 4);
500 ptr += 8 + 3;
501 } else if (strncmp (ptr + 8, "#Strings", 9) == 0){
502 image->heap_strings.data = image->raw_metadata + read32 (ptr);
503 image->heap_strings.size = read32 (ptr + 4);
504 ptr += 8 + 9;
505 } else if (strncmp (ptr + 8, "#US", 4) == 0){
506 image->heap_us.data = image->raw_metadata + read32 (ptr);
507 image->heap_us.size = read32 (ptr + 4);
508 ptr += 8 + 4;
509 } else if (strncmp (ptr + 8, "#Blob", 6) == 0){
510 image->heap_blob.data = image->raw_metadata + read32 (ptr);
511 image->heap_blob.size = read32 (ptr + 4);
512 ptr += 8 + 6;
513 } else if (strncmp (ptr + 8, "#GUID", 6) == 0){
514 image->heap_guid.data = image->raw_metadata + read32 (ptr);
515 image->heap_guid.size = read32 (ptr + 4);
516 ptr += 8 + 6;
517 } else if (strncmp (ptr + 8, "#-", 3) == 0) {
518 image->heap_tables.data = image->raw_metadata + read32 (ptr);
519 image->heap_tables.size = read32 (ptr + 4);
520 ptr += 8 + 3;
521 image->uncompressed_metadata = TRUE;
522 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Assembly '%s' has the non-standard metadata heap #-.\nRecompile it correctly (without the /incremental switch or in Release mode).\n", image->name);
523 } else if (strncmp (ptr + 8, "#Pdb", 5) == 0) {
524 image->heap_pdb.data = image->raw_metadata + read32 (ptr);
525 image->heap_pdb.size = read32 (ptr + 4);
526 ptr += 8 + 5;
527 } else {
528 g_message ("Unknown heap type: %s\n", ptr + 8);
529 ptr += 8 + strlen (ptr + 8) + 1;
530 }
531 pad = ptr - image->raw_metadata;
532 if (pad % 4)
533 ptr += 4 - (pad % 4);
534 }
535
536 i = ((MonoImageLoader*)image->loader)->load_tables (image);
537 g_assert (image->heap_guid.data);
538
539 if (!image->metadata_only) {
540 g_assert (image->heap_guid.size >= 16);
541
542 image->guid = mono_guid_to_string ((guint8*)image->heap_guid.data);
543 } else {
544 /* PPDB files have no guid */
545 guint8 empty_guid [16];
546
547 memset (empty_guid, 0, sizeof (empty_guid));
548
549 image->guid = mono_guid_to_string (empty_guid);
550 }
551
552 return i;
553 }
554
555 /*
556 * Load representation of logical metadata tables, from the "#~" stream
557 */
558 static gboolean
559 load_tables (MonoImage *image)
560 {
561 const char *heap_tables = image->heap_tables.data;
562 const guint32 *rows;
563 guint64 valid_mask;
564 int valid = 0, table;
565 int heap_sizes;
566
567 heap_sizes = heap_tables [6];
568 image->idx_string_wide = ((heap_sizes & 0x01) == 1);
569 image->idx_guid_wide = ((heap_sizes & 0x02) == 2);
570 image->idx_blob_wide = ((heap_sizes & 0x04) == 4);
571
572 valid_mask = read64 (heap_tables + 8);
573 rows = (const guint32 *) (heap_tables + 24);
574
575 for (table = 0; table < 64; table++){
576 if ((valid_mask & ((guint64) 1 << table)) == 0){
577 if (table > MONO_TABLE_LAST)
578 continue;
579 image->tables [table].rows = 0;
580 continue;
581 }
582 if (table > MONO_TABLE_LAST) {
583 g_warning("bits in valid must be zero above 0x37 (II - 23.1.6)");
584 } else {
585 image->tables [table].rows = read32 (rows);
586 }
587 rows++;
588 valid++;
589 }
590
591 image->tables_base = (heap_tables + 24) + (4 * valid);
592
593 /* They must be the same */
594 g_assert ((const void *) image->tables_base == (const void *) rows);
595
596 mono_metadata_compute_table_bases (image);
597 return TRUE;
598 }
599
600 gboolean
601 mono_image_load_metadata (MonoImage *image, MonoCLIImageInfo *iinfo)
602 {
603 if (!load_metadata_ptrs (image, iinfo))
604 return FALSE;
605
606 return load_tables (image);
607 }
608
609 void
610 mono_image_check_for_module_cctor (MonoImage *image)
611 {
612 MonoTableInfo *t, *mt;
613 t = &image->tables [MONO_TABLE_TYPEDEF];
614 mt = &image->tables [MONO_TABLE_METHOD];
615 if (image_is_dynamic (image)) {
616 /* FIXME: */
617 image->checked_module_cctor = TRUE;
618 return;
619 }
620 if (t->rows >= 1) {
621 guint32 nameidx = mono_metadata_decode_row_col (t, 0, MONO_TYPEDEF_NAME);
622 const char *name = mono_metadata_string_heap (image, nameidx);
623 if (strcmp (name, "<Module>") == 0) {
624 guint32 first_method = mono_metadata_decode_row_col (t, 0, MONO_TYPEDEF_METHOD_LIST) - 1;
625 guint32 last_method;
626 if (t->rows > 1)
627 last_method = mono_metadata_decode_row_col (t, 1, MONO_TYPEDEF_METHOD_LIST) - 1;
628 else
629 last_method = mt->rows;
630 for (; first_method < last_method; first_method++) {
631 nameidx = mono_metadata_decode_row_col (mt, first_method, MONO_METHOD_NAME);
632 name = mono_metadata_string_heap (image, nameidx);
633 if (strcmp (name, ".cctor") == 0) {
634 image->has_module_cctor = TRUE;
635 image->checked_module_cctor = TRUE;
636 return;
637 }
638 }
639 }
640 }
641 image->has_module_cctor = FALSE;
642 image->checked_module_cctor = TRUE;
643 }
644
645 static void
646 load_modules (MonoImage *image)
647 {
648 MonoTableInfo *t;
649
650 if (image->modules)
651 return;
652
653 t = &image->tables [MONO_TABLE_MODULEREF];
654 image->modules = g_new0 (MonoImage *, t->rows);
655 image->modules_loaded = g_new0 (gboolean, t->rows);
656 image->module_count = t->rows;
657 }
658
659 /**
660 * mono_image_load_module_checked:
661 *
662 * Load the module with the one-based index IDX from IMAGE and return it. Return NULL if
663 * it cannot be loaded. NULL without MonoError being set will be interpreted as "not found".
664 */
665 MonoImage*
666 mono_image_load_module_checked (MonoImage *image, int idx, MonoError *error)
667 {
668 MonoTableInfo *t;
669 MonoTableInfo *file_table;
670 int i;
671 char *base_dir;
672 gboolean refonly = image->ref_only;
673 GList *list_iter, *valid_modules = NULL;
674 MonoImageOpenStatus status;
675
676 if ((image->module_count == 0) || (idx > image->module_count || idx <= 0))
677 return NULL;
678 if (image->modules_loaded [idx - 1])
679 return image->modules [idx - 1];
680
681 file_table = &image->tables [MONO_TABLE_FILE];
682 for (i = 0; i < file_table->rows; i++) {
683 guint32 cols [MONO_FILE_SIZE];
684 mono_metadata_decode_row (file_table, i, cols, MONO_FILE_SIZE);
685 if (cols [MONO_FILE_FLAGS] == FILE_CONTAINS_NO_METADATA)
686 continue;
687 valid_modules = g_list_prepend (valid_modules, (char*)mono_metadata_string_heap (image, cols [MONO_FILE_NAME]));
688 }
689
690 t = &image->tables [MONO_TABLE_MODULEREF];
691 base_dir = g_path_get_dirname (image->name);
692
693 {
694 char *module_ref;
695 const char *name;
696 guint32 cols [MONO_MODULEREF_SIZE];
697 /* if there is no file table, we try to load the module... */
698 int valid = file_table->rows == 0;
699
700 mono_metadata_decode_row (t, idx - 1, cols, MONO_MODULEREF_SIZE);
701 name = mono_metadata_string_heap (image, cols [MONO_MODULEREF_NAME]);
702 for (list_iter = valid_modules; list_iter; list_iter = list_iter->next) {
703 /* be safe with string dups, but we could just compare string indexes */
704 if (strcmp (list_iter->data, name) == 0) {
705 valid = TRUE;
706 break;
707 }
708 }
709 if (valid) {
710 module_ref = g_build_filename (base_dir, name, NULL);
711 MonoImage *moduleImage = mono_image_open_full (module_ref, &status, refonly);
712 if (image->modules [idx - 1]) {
713 g_assert(!image->modules [idx - 1]->assembly || image->modules [idx - 1]->assembly == image->assembly);
714 image->modules [idx - 1]->assembly = image->assembly;
715
716 if (!assign_assembly_parent_for_netmodule (moduleImage, image, error)) {
717 mono_image_close (moduleImage);
718 g_free (module_ref);
719 g_free (base_dir);
720 g_list_free (valid_modules);
721 return NULL;
722 }
723
724 image->modules [idx - 1] = image;
725
726 #ifdef HOST_WIN32
727 if (image->modules [idx - 1]->is_module_handle)
728 mono_image_fixup_vtable (image->modules [idx - 1]);
729 #endif
730 /* g_print ("loaded module %s from %s (%p)\n", module_ref, image->name, image->assembly); */
731 }
732 g_free (module_ref);
733 }
734 }
735
736 image->modules_loaded [idx - 1] = TRUE;
737
738 g_free (base_dir);
739 g_list_free (valid_modules);
740
741 return image->modules [idx - 1];
742 }
743
744 MonoImage*
745 mono_image_load_module (MonoImage *image, int idx)
746 {
747 MonoError error;
748 mono_error_init (&error);
749 MonoImage *result = mono_image_load_module_checked (image, idx, &error);
750 mono_error_assert_ok (&error);
751 mono_error_cleanup (&error);
752 return result;
753 }
754
755 static gpointer
756 class_key_extract (gpointer value)
757 {
758 MonoClass *klass = (MonoClass *)value;
759
760 return GUINT_TO_POINTER (klass->type_token);
761 }
762
763 static gpointer*
764 class_next_value (gpointer value)
765 {
766 MonoClass *klass = (MonoClass *)value;
767
768 return (gpointer*)&klass->next_class_cache;
769 }
770
771 void
772 mono_image_init (MonoImage *image)
773 {
774 mono_os_mutex_init_recursive (&image->lock);
775 mono_os_mutex_init_recursive (&image->szarray_cache_lock);
776
777 image->mempool = mono_mempool_new_size (INITIAL_IMAGE_SIZE);
778 mono_internal_hash_table_init (&image->class_cache,
779 g_direct_hash,
780 class_key_extract,
781 class_next_value);
782 image->field_cache = mono_conc_hashtable_new (NULL, NULL);
783
784 image->typespec_cache = g_hash_table_new (NULL, NULL);
785 image->memberref_signatures = g_hash_table_new (NULL, NULL);
786 image->helper_signatures = g_hash_table_new (g_str_hash, g_str_equal);
787 image->method_signatures = g_hash_table_new (NULL, NULL);
788
789 image->property_hash = mono_property_hash_new ();
790 }
791
792 #if G_BYTE_ORDER != G_LITTLE_ENDIAN
793 #define SWAP64(x) (x) = GUINT64_FROM_LE ((x))
794 #define SWAP32(x) (x) = GUINT32_FROM_LE ((x))
795 #define SWAP16(x) (x) = GUINT16_FROM_LE ((x))
796 #define SWAPPDE(x) do { (x).rva = GUINT32_FROM_LE ((x).rva); (x).size = GUINT32_FROM_LE ((x).size);} while (0)
797 #else
798 #define SWAP64(x)
799 #define SWAP32(x)
800 #define SWAP16(x)
801 #define SWAPPDE(x)
802 #endif
803
804 /*
805 * Returns < 0 to indicate an error.
806 */
807 static int
808 do_load_header (MonoImage *image, MonoDotNetHeader *header, int offset)
809 {
810 MonoDotNetHeader64 header64;
811
812 #ifdef HOST_WIN32
813 if (!image->is_module_handle)
814 #endif
815 if (offset + sizeof (MonoDotNetHeader32) > image->raw_data_len)
816 return -1;
817
818 memcpy (header, image->raw_data + offset, sizeof (MonoDotNetHeader));
819
820 if (header->pesig [0] != 'P' || header->pesig [1] != 'E')
821 return -1;
822
823 /* endian swap the fields common between PE and PE+ */
824 SWAP32 (header->coff.coff_time);
825 SWAP32 (header->coff.coff_symptr);
826 SWAP32 (header->coff.coff_symcount);
827 SWAP16 (header->coff.coff_machine);
828 SWAP16 (header->coff.coff_sections);
829 SWAP16 (header->coff.coff_opt_header_size);
830 SWAP16 (header->coff.coff_attributes);
831 /* MonoPEHeader */
832 SWAP32 (header->pe.pe_code_size);
833 SWAP32 (header->pe.pe_uninit_data_size);
834 SWAP32 (header->pe.pe_rva_entry_point);
835 SWAP32 (header->pe.pe_rva_code_base);
836 SWAP32 (header->pe.pe_rva_data_base);
837 SWAP16 (header->pe.pe_magic);
838
839 /* now we are ready for the basic tests */
840
841 if (header->pe.pe_magic == 0x10B) {
842 offset += sizeof (MonoDotNetHeader);
843 SWAP32 (header->pe.pe_data_size);
844 if (header->coff.coff_opt_header_size != (sizeof (MonoDotNetHeader) - sizeof (MonoCOFFHeader) - 4))
845 return -1;
846
847 SWAP32 (header->nt.pe_image_base); /* must be 0x400000 */
848 SWAP32 (header->nt.pe_stack_reserve);
849 SWAP32 (header->nt.pe_stack_commit);
850 SWAP32 (header->nt.pe_heap_reserve);
851 SWAP32 (header->nt.pe_heap_commit);
852 } else if (header->pe.pe_magic == 0x20B) {
853 /* PE32+ file format */
854 if (header->coff.coff_opt_header_size != (sizeof (MonoDotNetHeader64) - sizeof (MonoCOFFHeader) - 4))
855 return -1;
856 memcpy (&header64, image->raw_data + offset, sizeof (MonoDotNetHeader64));
857 offset += sizeof (MonoDotNetHeader64);
858 /* copy the fields already swapped. the last field, pe_data_size, is missing */
859 memcpy (&header64, header, sizeof (MonoDotNetHeader) - 4);
860 /* FIXME: we lose bits here, but we don't use this stuff internally, so we don't care much.
861 * will be fixed when we change MonoDotNetHeader to not match the 32 bit variant
862 */
863 SWAP64 (header64.nt.pe_image_base);
864 header->nt.pe_image_base = header64.nt.pe_image_base;
865 SWAP64 (header64.nt.pe_stack_reserve);
866 header->nt.pe_stack_reserve = header64.nt.pe_stack_reserve;
867 SWAP64 (header64.nt.pe_stack_commit);
868 header->nt.pe_stack_commit = header64.nt.pe_stack_commit;
869 SWAP64 (header64.nt.pe_heap_reserve);
870 header->nt.pe_heap_reserve = header64.nt.pe_heap_reserve;
871 SWAP64 (header64.nt.pe_heap_commit);
872 header->nt.pe_heap_commit = header64.nt.pe_heap_commit;
873
874 header->nt.pe_section_align = header64.nt.pe_section_align;
875 header->nt.pe_file_alignment = header64.nt.pe_file_alignment;
876 header->nt.pe_os_major = header64.nt.pe_os_major;
877 header->nt.pe_os_minor = header64.nt.pe_os_minor;
878 header->nt.pe_user_major = header64.nt.pe_user_major;
879 header->nt.pe_user_minor = header64.nt.pe_user_minor;
880 header->nt.pe_subsys_major = header64.nt.pe_subsys_major;
881 header->nt.pe_subsys_minor = header64.nt.pe_subsys_minor;
882 header->nt.pe_reserved_1 = header64.nt.pe_reserved_1;
883 header->nt.pe_image_size = header64.nt.pe_image_size;
884 header->nt.pe_header_size = header64.nt.pe_header_size;
885 header->nt.pe_checksum = header64.nt.pe_checksum;
886 header->nt.pe_subsys_required = header64.nt.pe_subsys_required;
887 header->nt.pe_dll_flags = header64.nt.pe_dll_flags;
888 header->nt.pe_loader_flags = header64.nt.pe_loader_flags;
889 header->nt.pe_data_dir_count = header64.nt.pe_data_dir_count;
890
891 /* copy the datadir */
892 memcpy (&header->datadir, &header64.datadir, sizeof (MonoPEDatadir));
893 } else {
894 return -1;
895 }
896
897 /* MonoPEHeaderNT: not used yet */
898 SWAP32 (header->nt.pe_section_align); /* must be 8192 */
899 SWAP32 (header->nt.pe_file_alignment); /* must be 512 or 4096 */
900 SWAP16 (header->nt.pe_os_major); /* must be 4 */
901 SWAP16 (header->nt.pe_os_minor); /* must be 0 */
902 SWAP16 (header->nt.pe_user_major);
903 SWAP16 (header->nt.pe_user_minor);
904 SWAP16 (header->nt.pe_subsys_major);
905 SWAP16 (header->nt.pe_subsys_minor);
906 SWAP32 (header->nt.pe_reserved_1);
907 SWAP32 (header->nt.pe_image_size);
908 SWAP32 (header->nt.pe_header_size);
909 SWAP32 (header->nt.pe_checksum);
910 SWAP16 (header->nt.pe_subsys_required);
911 SWAP16 (header->nt.pe_dll_flags);
912 SWAP32 (header->nt.pe_loader_flags);
913 SWAP32 (header->nt.pe_data_dir_count);
914
915 /* MonoDotNetHeader: mostly unused */
916 SWAPPDE (header->datadir.pe_export_table);
917 SWAPPDE (header->datadir.pe_import_table);
918 SWAPPDE (header->datadir.pe_resource_table);
919 SWAPPDE (header->datadir.pe_exception_table);
920 SWAPPDE (header->datadir.pe_certificate_table);
921 SWAPPDE (header->datadir.pe_reloc_table);
922 SWAPPDE (header->datadir.pe_debug);
923 SWAPPDE (header->datadir.pe_copyright);
924 SWAPPDE (header->datadir.pe_global_ptr);
925 SWAPPDE (header->datadir.pe_tls_table);
926 SWAPPDE (header->datadir.pe_load_config_table);
927 SWAPPDE (header->datadir.pe_bound_import);
928 SWAPPDE (header->datadir.pe_iat);
929 SWAPPDE (header->datadir.pe_delay_import_desc);
930 SWAPPDE (header->datadir.pe_cli_header);
931 SWAPPDE (header->datadir.pe_reserved);
932
933 #ifdef HOST_WIN32
934 if (image->is_module_handle)
935 image->raw_data_len = header->nt.pe_image_size;
936 #endif
937
938 return offset;
939 }
940
941 gboolean
942 mono_image_load_pe_data (MonoImage *image)
943 {
944 return ((MonoImageLoader*)image->loader)->load_pe_data (image);
945 }
946
947 static gboolean
948 pe_image_load_pe_data (MonoImage *image)
949 {
950 MonoCLIImageInfo *iinfo;
951 MonoDotNetHeader *header;
952 MonoMSDOSHeader msdos;
953 gint32 offset = 0;
954
955 iinfo = (MonoCLIImageInfo *)image->image_info;
956 header = &iinfo->cli_header;
957
958 #ifdef HOST_WIN32
959 if (!image->is_module_handle)
960 #endif
961 if (offset + sizeof (msdos) > image->raw_data_len)
962 goto invalid_image;
963 memcpy (&msdos, image->raw_data + offset, sizeof (msdos));
964
965 if (!(msdos.msdos_sig [0] == 'M' && msdos.msdos_sig [1] == 'Z'))
966 goto invalid_image;
967
968 msdos.pe_offset = GUINT32_FROM_LE (msdos.pe_offset);
969
970 offset = msdos.pe_offset;
971
972 offset = do_load_header (image, header, offset);
973 if (offset < 0)
974 goto invalid_image;
975
976 /*
977 * this tests for a x86 machine type, but itanium, amd64 and others could be used, too.
978 * we skip this test.
979 if (header->coff.coff_machine != 0x14c)
980 goto invalid_image;
981 */
982
983 #if 0
984 /*
985 * The spec says that this field should contain 6.0, but Visual Studio includes a new compiler,
986 * which produces binaries with 7.0. From Sergey:
987 *
988 * The reason is that MSVC7 uses traditional compile/link
989 * sequence for CIL executables, and VS.NET (and Framework
990 * SDK) includes linker version 7, that puts 7.0 in this
991 * field. That's why it's currently not possible to load VC
992 * binaries with Mono. This field is pretty much meaningless
993 * anyway (what linker?).
994 */
995 if (header->pe.pe_major != 6 || header->pe.pe_minor != 0)
996 goto invalid_image;
997 #endif
998
999 /*
1000 * FIXME: byte swap all addresses here for header.
1001 */
1002
1003 if (!load_section_tables (image, iinfo, offset))
1004 goto invalid_image;
1005
1006 return TRUE;
1007
1008 invalid_image:
1009 return FALSE;
1010 }
1011
1012 gboolean
1013 mono_image_load_cli_data (MonoImage *image)
1014 {
1015 return ((MonoImageLoader*)image->loader)->load_cli_data (image);
1016 }
1017
1018 static gboolean
1019 pe_image_load_cli_data (MonoImage *image)
1020 {
1021 MonoCLIImageInfo *iinfo;
1022 MonoDotNetHeader *header;
1023
1024 iinfo = (MonoCLIImageInfo *)image->image_info;
1025 header = &iinfo->cli_header;
1026
1027 /* Load the CLI header */
1028 if (!mono_image_load_cli_header (image, iinfo))
1029 return FALSE;
1030
1031 if (!mono_image_load_metadata (image, iinfo))
1032 return FALSE;
1033
1034 return TRUE;
1035 }
1036
1037 void
1038 mono_image_load_names (MonoImage *image)
1039 {
1040 /* modules don't have an assembly table row */
1041 if (image->tables [MONO_TABLE_ASSEMBLY].rows) {
1042 image->assembly_name = mono_metadata_string_heap (image,
1043 mono_metadata_decode_row_col (&image->tables [MONO_TABLE_ASSEMBLY],
1044 0, MONO_ASSEMBLY_NAME));
1045 }
1046
1047 /* Portable pdb images don't have a MODULE row */
1048 if (image->tables [MONO_TABLE_MODULE].rows) {
1049 image->module_name = mono_metadata_string_heap (image,
1050 mono_metadata_decode_row_col (&image->tables [MONO_TABLE_MODULE],
1051 0, MONO_MODULE_NAME));
1052 }
1053 }
1054
1055 static gboolean
1056 pe_image_load_tables (MonoImage *image)
1057 {
1058 return TRUE;
1059 }
1060
1061 static gboolean
1062 pe_image_match (MonoImage *image)
1063 {
1064 if (image->raw_data [0] == 'M' && image->raw_data [1] == 'Z')
1065 return TRUE;
1066 return FALSE;
1067 }
1068
1069 static const MonoImageLoader pe_loader = {
1070 pe_image_match,
1071 pe_image_load_pe_data,
1072 pe_image_load_cli_data,
1073 pe_image_load_tables,
1074 };
1075
1076 static void
1077 install_pe_loader (void)
1078 {
1079 mono_install_image_loader (&pe_loader);
1080 }
1081
1082 static MonoImage *
1083 do_mono_image_load (MonoImage *image, MonoImageOpenStatus *status,
1084 gboolean care_about_cli, gboolean care_about_pecoff)
1085 {
1086 MonoCLIImageInfo *iinfo;
1087 MonoDotNetHeader *header;
1088 GSList *errors = NULL;
1089 GSList *l;
1090
1091 mono_profiler_module_event (image, MONO_PROFILE_START_LOAD);
1092
1093 mono_image_init (image);
1094
1095 iinfo = (MonoCLIImageInfo *)image->image_info;
1096 header = &iinfo->cli_header;
1097
1098 if (!image->metadata_only) {
1099 for (l = image_loaders; l; l = l->next) {
1100 MonoImageLoader *loader = (MonoImageLoader *)l->data;
1101 if (loader->match (image)) {
1102 image->loader = loader;
1103 break;
1104 }
1105 }
1106 if (!image->loader) {
1107 if (status)
1108 *status = MONO_IMAGE_IMAGE_INVALID;
1109 goto invalid_image;
1110 }
1111
1112 if (status)
1113 *status = MONO_IMAGE_IMAGE_INVALID;
1114
1115 if (care_about_pecoff == FALSE)
1116 goto done;
1117
1118 if (image->loader == &pe_loader && !mono_verifier_verify_pe_data (image, &errors))
1119 goto invalid_image;
1120
1121 if (!mono_image_load_pe_data (image))
1122 goto invalid_image;
1123 } else {
1124 image->loader = (MonoImageLoader*)&pe_loader;
1125 }
1126
1127 if (care_about_cli == FALSE) {
1128 goto done;
1129 }
1130
1131 if (image->loader == &pe_loader && !image->metadata_only && !mono_verifier_verify_cli_data (image, &errors))
1132 goto invalid_image;
1133
1134 if (!mono_image_load_cli_data (image))
1135 goto invalid_image;
1136
1137 if (image->loader == &pe_loader && !image->metadata_only && !mono_verifier_verify_table_data (image, &errors))
1138 goto invalid_image;
1139
1140 mono_image_load_names (image);
1141
1142 load_modules (image);
1143
1144 done:
1145 mono_profiler_module_loaded (image, MONO_PROFILE_OK);
1146 if (status)
1147 *status = MONO_IMAGE_OK;
1148
1149 return image;
1150
1151 invalid_image:
1152 if (errors) {
1153 MonoVerifyInfo *info = (MonoVerifyInfo *)errors->data;
1154 g_warning ("Could not load image %s due to %s", image->name, info->message);
1155 mono_free_verify_list (errors);
1156 }
1157 mono_profiler_module_loaded (image, MONO_PROFILE_FAILED);
1158 mono_image_close (image);
1159 return NULL;
1160 }
1161
1162 static MonoImage *
1163 do_mono_image_open (const char *fname, MonoImageOpenStatus *status,
1164 gboolean care_about_cli, gboolean care_about_pecoff, gboolean refonly, gboolean metadata_only)
1165 {
1166 MonoCLIImageInfo *iinfo;
1167 MonoImage *image;
1168 MonoFileMap *filed;
1169
1170 if ((filed = mono_file_map_open (fname)) == NULL){
1171 if (IS_PORTABILITY_SET) {
1172 gchar *ffname = mono_portability_find_file (fname, TRUE);
1173 if (ffname) {
1174 filed = mono_file_map_open (ffname);
1175 g_free (ffname);
1176 }
1177 }
1178
1179 if (filed == NULL) {
1180 if (status)
1181 *status = MONO_IMAGE_ERROR_ERRNO;
1182 return NULL;
1183 }
1184 }
1185
1186 image = g_new0 (MonoImage, 1);
1187 image->raw_buffer_used = TRUE;
1188 image->raw_data_len = mono_file_map_size (filed);
1189 image->raw_data = (char *)mono_file_map (image->raw_data_len, MONO_MMAP_READ|MONO_MMAP_PRIVATE, mono_file_map_fd (filed), 0, &image->raw_data_handle);
1190 #if defined(HAVE_MMAP) && !defined (HOST_WIN32)
1191 if (!image->raw_data) {
1192 image->fileio_used = TRUE;
1193 image->raw_data = (char *)mono_file_map_fileio (image->raw_data_len, MONO_MMAP_READ|MONO_MMAP_PRIVATE, mono_file_map_fd (filed), 0, &image->raw_data_handle);
1194 }
1195 #endif
1196 if (!image->raw_data) {
1197 mono_file_map_close (filed);
1198 g_free (image);
1199 if (status)
1200 *status = MONO_IMAGE_IMAGE_INVALID;
1201 return NULL;
1202 }
1203 iinfo = g_new0 (MonoCLIImageInfo, 1);
1204 image->image_info = iinfo;
1205 image->name = mono_path_resolve_symlinks (fname);
1206 image->ref_only = refonly;
1207 image->metadata_only = metadata_only;
1208 image->ref_count = 1;
1209 /* if MONO_SECURITY_MODE_CORE_CLR is set then determine if this image is platform code */
1210 image->core_clr_platform_code = mono_security_core_clr_determine_platform_image (image);
1211
1212 mono_file_map_close (filed);
1213 return do_mono_image_load (image, status, care_about_cli, care_about_pecoff);
1214 }
1215
1216 /**
1217 * mono_image_loaded:
1218 * @name: path or assembly name of the image to load
1219 * @refonly: Check with respect to reflection-only loads?
1220 *
1221 * This routine verifies that the given image is loaded.
1222 * It checks either reflection-only loads only, or normal loads only, as specified by parameter.
1223 *
1224 * Returns: the loaded MonoImage, or NULL on failure.
1225 */
1226 MonoImage *
1227 mono_image_loaded_full (const char *name, gboolean refonly)
1228 {
1229 MonoImage *res;
1230
1231 mono_images_lock ();
1232 res = (MonoImage *)g_hash_table_lookup (get_loaded_images_hash (refonly), name);
1233 if (!res)
1234 res = (MonoImage *)g_hash_table_lookup (get_loaded_images_by_name_hash (refonly), name);
1235 mono_images_unlock ();
1236
1237 return res;
1238 }
1239
1240 /**
1241 * mono_image_loaded:
1242 * @name: path or assembly name of the image to load
1243 *
1244 * This routine verifies that the given image is loaded. Reflection-only loads do not count.
1245 *
1246 * Returns: the loaded MonoImage, or NULL on failure.
1247 */
1248 MonoImage *
1249 mono_image_loaded (const char *name)
1250 {
1251 return mono_image_loaded_full (name, FALSE);
1252 }
1253
1254 typedef struct {
1255 MonoImage *res;
1256 const char* guid;
1257 } GuidData;
1258
1259 static void
1260 find_by_guid (gpointer key, gpointer val, gpointer user_data)
1261 {
1262 GuidData *data = (GuidData *)user_data;
1263 MonoImage *image;
1264
1265 if (data->res)
1266 return;
1267 image = (MonoImage *)val;
1268 if (strcmp (data->guid, mono_image_get_guid (image)) == 0)
1269 data->res = image;
1270 }
1271
1272 MonoImage *
1273 mono_image_loaded_by_guid_full (const char *guid, gboolean refonly)
1274 {
1275 GuidData data;
1276 GHashTable *loaded_images = get_loaded_images_hash (refonly);
1277 data.res = NULL;
1278 data.guid = guid;
1279
1280 mono_images_lock ();
1281 g_hash_table_foreach (loaded_images, find_by_guid, &data);
1282 mono_images_unlock ();
1283 return data.res;
1284 }
1285
1286 MonoImage *
1287 mono_image_loaded_by_guid (const char *guid)
1288 {
1289 return mono_image_loaded_by_guid_full (guid, FALSE);
1290 }
1291
1292 static MonoImage *
1293 register_image (MonoImage *image)
1294 {
1295 MonoImage *image2;
1296 GHashTable *loaded_images = get_loaded_images_hash (image->ref_only);
1297
1298 mono_images_lock ();
1299 image2 = (MonoImage *)g_hash_table_lookup (loaded_images, image->name);
1300
1301 if (image2) {
1302 /* Somebody else beat us to it */
1303 mono_image_addref (image2);
1304 mono_images_unlock ();
1305 mono_image_close (image);
1306 return image2;
1307 }
1308
1309 GHashTable *loaded_images_by_name = get_loaded_images_by_name_hash (image->ref_only);
1310 g_hash_table_insert (loaded_images, image->name, image);
1311 if (image->assembly_name && (g_hash_table_lookup (loaded_images_by_name, image->assembly_name) == NULL))
1312 g_hash_table_insert (loaded_images_by_name, (char *) image->assembly_name, image);
1313 mono_images_unlock ();
1314
1315 return image;
1316 }
1317
1318 MonoImage *
1319 mono_image_open_from_data_internal (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status, gboolean refonly, gboolean metadata_only, const char *name)
1320 {
1321 MonoCLIImageInfo *iinfo;
1322 MonoImage *image;
1323 char *datac;
1324
1325 if (!data || !data_len) {
1326 if (status)
1327 *status = MONO_IMAGE_IMAGE_INVALID;
1328 return NULL;
1329 }
1330 datac = data;
1331 if (need_copy) {
1332 datac = (char *)g_try_malloc (data_len);
1333 if (!datac) {
1334 if (status)
1335 *status = MONO_IMAGE_ERROR_ERRNO;
1336 return NULL;
1337 }
1338 memcpy (datac, data, data_len);
1339 }
1340
1341 image = g_new0 (MonoImage, 1);
1342 image->raw_data = datac;
1343 image->raw_data_len = data_len;
1344 image->raw_data_allocated = need_copy;
1345 image->name = (name == NULL) ? g_strdup_printf ("data-%p", datac) : g_strdup(name);
1346 iinfo = g_new0 (MonoCLIImageInfo, 1);
1347 image->image_info = iinfo;
1348 image->ref_only = refonly;
1349 image->metadata_only = metadata_only;
1350 image->ref_count = 1;
1351
1352 image = do_mono_image_load (image, status, TRUE, TRUE);
1353 if (image == NULL)
1354 return NULL;
1355
1356 return register_image (image);
1357 }
1358
1359 MonoImage *
1360 mono_image_open_from_data_with_name (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status, gboolean refonly, const char *name)
1361 {
1362 return mono_image_open_from_data_internal (data, data_len, need_copy, status, refonly, FALSE, name);
1363 }
1364
1365 MonoImage *
1366 mono_image_open_from_data_full (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status, gboolean refonly)
1367 {
1368 return mono_image_open_from_data_with_name (data, data_len, need_copy, status, refonly, NULL);
1369 }
1370
1371 MonoImage *
1372 mono_image_open_from_data (char *data, guint32 data_len, gboolean need_copy, MonoImageOpenStatus *status)
1373 {
1374 return mono_image_open_from_data_full (data, data_len, need_copy, status, FALSE);
1375 }
1376
1377 #ifdef HOST_WIN32
1378 /* fname is not duplicated. */
1379 MonoImage*
1380 mono_image_open_from_module_handle (HMODULE module_handle, char* fname, gboolean has_entry_point, MonoImageOpenStatus* status)
1381 {
1382 MonoImage* image;
1383 MonoCLIImageInfo* iinfo;
1384
1385 image = g_new0 (MonoImage, 1);
1386 image->raw_data = (char*) module_handle;
1387 image->is_module_handle = TRUE;
1388 iinfo = g_new0 (MonoCLIImageInfo, 1);
1389 image->image_info = iinfo;
1390 image->name = fname;
1391 image->ref_count = has_entry_point ? 0 : 1;
1392 image->has_entry_point = has_entry_point;
1393
1394 image = do_mono_image_load (image, status, TRUE, TRUE);
1395 if (image == NULL)
1396 return NULL;
1397
1398 return register_image (image);
1399 }
1400 #endif
1401
1402 MonoImage *
1403 mono_image_open_full (const char *fname, MonoImageOpenStatus *status, gboolean refonly)
1404 {
1405 MonoImage *image;
1406 GHashTable *loaded_images = get_loaded_images_hash (refonly);
1407 char *absfname;
1408
1409 g_return_val_if_fail (fname != NULL, NULL);
1410
1411 #ifdef HOST_WIN32
1412 // Win32 path: If we are running with mixed-mode assemblies enabled (ie have loaded mscoree.dll),
1413 // then assemblies need to be loaded with LoadLibrary:
1414 if (!refonly && coree_module_handle) {
1415 HMODULE module_handle;
1416 guint16 *fname_utf16;
1417 DWORD last_error;
1418
1419 absfname = mono_path_resolve_symlinks (fname);
1420 fname_utf16 = NULL;
1421
1422 /* There is little overhead because the OS loader lock is held by LoadLibrary. */
1423 mono_images_lock ();
1424 image = g_hash_table_lookup (loaded_images, absfname);
1425 if (image) { // Image already loaded
1426 g_assert (image->is_module_handle);
1427 if (image->has_entry_point && image->ref_count == 0) {
1428 /* Increment reference count on images loaded outside of the runtime. */
1429 fname_utf16 = g_utf8_to_utf16 (absfname, -1, NULL, NULL, NULL);
1430 /* The image is already loaded because _CorDllMain removes images from the hash. */
1431 module_handle = LoadLibrary (fname_utf16);
1432 g_assert (module_handle == (HMODULE) image->raw_data);
1433 }
1434 mono_image_addref (image);
1435 mono_images_unlock ();
1436 if (fname_utf16)
1437 g_free (fname_utf16);
1438 g_free (absfname);
1439 return image;
1440 }
1441
1442 // Image not loaded, load it now
1443 fname_utf16 = g_utf8_to_utf16 (absfname, -1, NULL, NULL, NULL);
1444 module_handle = MonoLoadImage (fname_utf16);
1445 if (status && module_handle == NULL)
1446 last_error = GetLastError ();
1447
1448 /* mono_image_open_from_module_handle is called by _CorDllMain. */
1449 image = g_hash_table_lookup (loaded_images, absfname);
1450 if (image)
1451 mono_image_addref (image);
1452 mono_images_unlock ();
1453
1454 g_free (fname_utf16);
1455
1456 if (module_handle == NULL) {
1457 g_assert (!image);
1458 g_free (absfname);
1459 if (status) {
1460 if (last_error == ERROR_BAD_EXE_FORMAT || last_error == STATUS_INVALID_IMAGE_FORMAT)
1461 *status = MONO_IMAGE_IMAGE_INVALID;
1462 else {
1463 if (last_error == ERROR_FILE_NOT_FOUND || last_error == ERROR_PATH_NOT_FOUND)
1464 errno = ENOENT;
1465 else
1466 errno = 0;
1467 }
1468 }
1469 return NULL;
1470 }
1471
1472 if (image) {
1473 g_assert (image->is_module_handle);
1474 g_assert (image->has_entry_point);
1475 g_free (absfname);
1476 return image;
1477 }
1478
1479 return mono_image_open_from_module_handle (module_handle, absfname, FALSE, status);
1480 }
1481 #endif
1482
1483 absfname = mono_path_canonicalize (fname);
1484
1485 /*
1486 * The easiest solution would be to do all the loading inside the mutex,
1487 * but that would lead to scalability problems. So we let the loading
1488 * happen outside the mutex, and if multiple threads happen to load
1489 * the same image, we discard all but the first copy.
1490 */
1491 mono_images_lock ();
1492 image = (MonoImage *)g_hash_table_lookup (loaded_images, absfname);
1493 g_free (absfname);
1494
1495 if (image) { // Image already loaded
1496 mono_image_addref (image);
1497 mono_images_unlock ();
1498 return image;
1499 }
1500 mono_images_unlock ();
1501
1502 // Image not loaded, load it now
1503 image = do_mono_image_open (fname, status, TRUE, TRUE, refonly, FALSE);
1504 if (image == NULL)
1505 return NULL;
1506
1507 return register_image (image);
1508 }
1509
1510 /**
1511 * mono_image_open:
1512 * @fname: filename that points to the module we want to open
1513 * @status: An error condition is returned in this field
1514 *
1515 * Returns: An open image of type %MonoImage or NULL on error.
1516 * The caller holds a temporary reference to the returned image which should be cleared
1517 * when no longer needed by calling mono_image_close ().
1518 * if NULL, then check the value of @status for details on the error
1519 */
1520 MonoImage *
1521 mono_image_open (const char *fname, MonoImageOpenStatus *status)
1522 {
1523 return mono_image_open_full (fname, status, FALSE);
1524 }
1525
1526 /**
1527 * mono_pe_file_open:
1528 * @fname: filename that points to the module we want to open
1529 * @status: An error condition is returned in this field
1530 *
1531 * Returns: An open image of type %MonoImage or NULL on error. if
1532 * NULL, then check the value of @status for details on the error.
1533 * This variant for mono_image_open DOES NOT SET UP CLI METADATA.
1534 * It's just a PE file loader, used for FileVersionInfo. It also does
1535 * not use the image cache.
1536 */
1537 MonoImage *
1538 mono_pe_file_open (const char *fname, MonoImageOpenStatus *status)
1539 {
1540 g_return_val_if_fail (fname != NULL, NULL);
1541
1542 return do_mono_image_open (fname, status, FALSE, TRUE, FALSE, FALSE);
1543 }
1544
1545 /**
1546 * mono_image_open_raw
1547 * @fname: filename that points to the module we want to open
1548 * @status: An error condition is returned in this field
1549 *
1550 * Returns an image without loading neither pe or cli data.
1551 *
1552 * Use mono_image_load_pe_data and mono_image_load_cli_data to load them.
1553 */
1554 MonoImage *
1555 mono_image_open_raw (const char *fname, MonoImageOpenStatus *status)
1556 {
1557 g_return_val_if_fail (fname != NULL, NULL);
1558
1559 return do_mono_image_open (fname, status, FALSE, FALSE, FALSE, FALSE);
1560 }
1561
1562 /*
1563 * mono_image_open_metadata_only:
1564 *
1565 * Open an image which contains metadata only without a PE header.
1566 */
1567 MonoImage *
1568 mono_image_open_metadata_only (const char *fname, MonoImageOpenStatus *status)
1569 {
1570 return do_mono_image_open (fname, status, TRUE, TRUE, FALSE, TRUE);
1571 }
1572
1573 void
1574 mono_image_fixup_vtable (MonoImage *image)
1575 {
1576 #ifdef HOST_WIN32
1577 MonoCLIImageInfo *iinfo;
1578 MonoPEDirEntry *de;
1579 MonoVTableFixup *vtfixup;
1580 int count;
1581 gpointer slot;
1582 guint16 slot_type;
1583 int slot_count;
1584
1585 g_assert (image->is_module_handle);
1586
1587 iinfo = image->image_info;
1588 de = &iinfo->cli_cli_header.ch_vtable_fixups;
1589 if (!de->rva || !de->size)
1590 return;
1591 vtfixup = (MonoVTableFixup*) mono_image_rva_map (image, de->rva);
1592 if (!vtfixup)
1593 return;
1594
1595 count = de->size / sizeof (MonoVTableFixup);
1596 while (count--) {
1597 if (!vtfixup->rva || !vtfixup->count)
1598 continue;
1599
1600 slot = mono_image_rva_map (image, vtfixup->rva);
1601 g_assert (slot);
1602 slot_type = vtfixup->type;
1603 slot_count = vtfixup->count;
1604 if (slot_type & VTFIXUP_TYPE_32BIT)
1605 while (slot_count--) {
1606 *((guint32*) slot) = (guint32) mono_marshal_get_vtfixup_ftnptr (image, *((guint32*) slot), slot_type);
1607 slot = ((guint32*) slot) + 1;
1608 }
1609 else if (slot_type & VTFIXUP_TYPE_64BIT)
1610 while (slot_count--) {
1611 *((guint64*) slot) = (guint64) mono_marshal_get_vtfixup_ftnptr (image, *((guint64*) slot), slot_type);
1612 slot = ((guint32*) slot) + 1;
1613 }
1614 else
1615 g_assert_not_reached();
1616
1617 vtfixup++;
1618 }
1619 #else
1620 g_assert_not_reached();
1621 #endif
1622 }
1623
1624 static void
1625 free_hash_table (gpointer key, gpointer val, gpointer user_data)
1626 {
1627 g_hash_table_destroy ((GHashTable*)val);
1628 }
1629
1630 /*
1631 static void
1632 free_mr_signatures (gpointer key, gpointer val, gpointer user_data)
1633 {
1634 mono_metadata_free_method_signature ((MonoMethodSignature*)val);
1635 }
1636 */
1637
1638 static void
1639 free_array_cache_entry (gpointer key, gpointer val, gpointer user_data)
1640 {
1641 g_slist_free ((GSList*)val);
1642 }
1643
1644 /**
1645 * mono_image_addref:
1646 * @image: The image file we wish to add a reference to
1647 *
1648 * Increases the reference count of an image.
1649 */
1650 void
1651 mono_image_addref (MonoImage *image)
1652 {
1653 InterlockedIncrement (&image->ref_count);
1654 }
1655
1656 void
1657 mono_dynamic_stream_reset (MonoDynamicStream* stream)
1658 {
1659 stream->alloc_size = stream->index = stream->offset = 0;
1660 g_free (stream->data);
1661 stream->data = NULL;
1662 if (stream->hash) {
1663 g_hash_table_destroy (stream->hash);
1664 stream->hash = NULL;
1665 }
1666 }
1667
1668 static inline void
1669 free_hash (GHashTable *hash)
1670 {
1671 if (hash)
1672 g_hash_table_destroy (hash);
1673 }
1674
1675 void
1676 mono_wrapper_caches_free (MonoWrapperCaches *cache)
1677 {
1678 free_hash (cache->delegate_invoke_cache);
1679 free_hash (cache->delegate_begin_invoke_cache);
1680 free_hash (cache->delegate_end_invoke_cache);
1681 free_hash (cache->runtime_invoke_cache);
1682 free_hash (cache->runtime_invoke_vtype_cache);
1683
1684 free_hash (cache->delegate_abstract_invoke_cache);
1685
1686 free_hash (cache->runtime_invoke_direct_cache);
1687 free_hash (cache->managed_wrapper_cache);
1688
1689 free_hash (cache->native_wrapper_cache);
1690 free_hash (cache->native_wrapper_aot_cache);
1691 free_hash (cache->native_wrapper_check_cache);
1692 free_hash (cache->native_wrapper_aot_check_cache);
1693
1694 free_hash (cache->native_func_wrapper_aot_cache);
1695 free_hash (cache->remoting_invoke_cache);
1696 free_hash (cache->synchronized_cache);
1697 free_hash (cache->unbox_wrapper_cache);
1698 free_hash (cache->cominterop_invoke_cache);
1699 free_hash (cache->cominterop_wrapper_cache);
1700 free_hash (cache->thunk_invoke_cache);
1701 }
1702
1703 static void
1704 mono_image_close_except_pools_all (MonoImage**images, int image_count)
1705 {
1706 for (int i = 0; i < image_count; ++i) {
1707 if (images [i]) {
1708 if (!mono_image_close_except_pools (images [i]))
1709 images [i] = NULL;
1710 }
1711 }
1712 }
1713
1714 /*
1715 * Returns whether mono_image_close_finish() must be called as well.
1716 * We must unload images in two steps because clearing the domain in
1717 * SGen requires the class metadata to be intact, but we need to free
1718 * the mono_g_hash_tables in case a collection occurs during domain
1719 * unloading and the roots would trip up the GC.
1720 */
1721 gboolean
1722 mono_image_close_except_pools (MonoImage *image)
1723 {
1724 MonoImage *image2;
1725 GHashTable *loaded_images, *loaded_images_by_name;
1726 int i;
1727
1728 g_return_val_if_fail (image != NULL, FALSE);
1729
1730 /*
1731 * Atomically decrement the refcount and remove ourselves from the hash tables, so
1732 * register_image () can't grab an image which is being closed.
1733 */
1734 mono_images_lock ();
1735
1736 if (InterlockedDecrement (&image->ref_count) > 0) {
1737 mono_images_unlock ();
1738 return FALSE;
1739 }
1740
1741 loaded_images = get_loaded_images_hash (image->ref_only);
1742 loaded_images_by_name = get_loaded_images_by_name_hash (image->ref_only);
1743 image2 = (MonoImage *)g_hash_table_lookup (loaded_images, image->name);
1744 if (image == image2) {
1745 /* This is not true if we are called from mono_image_open () */
1746 g_hash_table_remove (loaded_images, image->name);
1747 }
1748 if (image->assembly_name && (g_hash_table_lookup (loaded_images_by_name, image->assembly_name) == image))
1749 g_hash_table_remove (loaded_images_by_name, (char *) image->assembly_name);
1750
1751 mono_images_unlock ();
1752
1753 #ifdef HOST_WIN32
1754 if (image->is_module_handle && image->has_entry_point) {
1755 mono_images_lock ();
1756 if (image->ref_count == 0) {
1757 /* Image will be closed by _CorDllMain. */
1758 FreeLibrary ((HMODULE) image->raw_data);
1759 mono_images_unlock ();
1760 return FALSE;
1761 }
1762 mono_images_unlock ();
1763 }
1764 #endif
1765
1766 mono_profiler_module_event (image, MONO_PROFILE_START_UNLOAD);
1767
1768 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_ASSEMBLY, "Unloading image %s [%p].", image->name, image);
1769
1770 mono_image_invoke_unload_hook (image);
1771
1772 mono_metadata_clean_for_image (image);
1773
1774 /*
1775 * The caches inside a MonoImage might refer to metadata which is stored in referenced
1776 * assemblies, so we can't release these references in mono_assembly_close () since the
1777 * MonoImage might outlive its associated MonoAssembly.
1778 */
1779 if (image->references && !image_is_dynamic (image)) {
1780 for (i = 0; i < image->nreferences; i++) {
1781 if (image->references [i] && image->references [i] != REFERENCE_MISSING) {
1782 if (!mono_assembly_close_except_image_pools (image->references [i]))
1783 image->references [i] = NULL;
1784 }
1785 }
1786 } else {
1787 if (image->references) {
1788 g_free (image->references);
1789 image->references = NULL;
1790 }
1791 }
1792
1793 #ifdef HOST_WIN32
1794 mono_images_lock ();
1795 if (image->is_module_handle && !image->has_entry_point)
1796 FreeLibrary ((HMODULE) image->raw_data);
1797 mono_images_unlock ();
1798 #endif
1799
1800 if (image->raw_buffer_used) {
1801 if (image->raw_data != NULL) {
1802 #ifndef HOST_WIN32
1803 if (image->fileio_used)
1804 mono_file_unmap_fileio (image->raw_data, image->raw_data_handle);
1805 else
1806 #endif
1807 mono_file_unmap (image->raw_data, image->raw_data_handle);
1808 }
1809 }
1810
1811 if (image->raw_data_allocated) {
1812 /* FIXME: do we need this? (image is disposed anyway) */
1813 /* image->raw_metadata and cli_sections might lie inside image->raw_data */
1814 MonoCLIImageInfo *ii = (MonoCLIImageInfo *)image->image_info;
1815
1816 if ((image->raw_metadata > image->raw_data) &&
1817 (image->raw_metadata <= (image->raw_data + image->raw_data_len)))
1818 image->raw_metadata = NULL;
1819
1820 for (i = 0; i < ii->cli_section_count; i++)
1821 if (((char*)(ii->cli_sections [i]) > image->raw_data) &&
1822 ((char*)(ii->cli_sections [i]) <= ((char*)image->raw_data + image->raw_data_len)))
1823 ii->cli_sections [i] = NULL;
1824
1825 g_free (image->raw_data);
1826 }
1827
1828 if (debug_assembly_unload) {
1829 image->name = g_strdup_printf ("%s - UNLOADED", image->name);
1830 } else {
1831 g_free (image->name);
1832 g_free (image->guid);
1833 g_free (image->version);
1834 }
1835
1836 if (image->method_cache)
1837 g_hash_table_destroy (image->method_cache);
1838 if (image->methodref_cache)
1839 g_hash_table_destroy (image->methodref_cache);
1840 mono_internal_hash_table_destroy (&image->class_cache);
1841 mono_conc_hashtable_destroy (image->field_cache);
1842 if (image->array_cache) {
1843 g_hash_table_foreach (image->array_cache, free_array_cache_entry, NULL);
1844 g_hash_table_destroy (image->array_cache);
1845 }
1846 if (image->szarray_cache)
1847 g_hash_table_destroy (image->szarray_cache);
1848 if (image->ptr_cache)
1849 g_hash_table_destroy (image->ptr_cache);
1850 if (image->name_cache) {
1851 g_hash_table_foreach (image->name_cache, free_hash_table, NULL);
1852 g_hash_table_destroy (image->name_cache);
1853 }
1854
1855 free_hash (image->delegate_bound_static_invoke_cache);
1856 free_hash (image->runtime_invoke_vcall_cache);
1857 free_hash (image->ldfld_wrapper_cache);
1858 free_hash (image->ldflda_wrapper_cache);
1859 free_hash (image->stfld_wrapper_cache);
1860 free_hash (image->isinst_cache);
1861 free_hash (image->castclass_cache);
1862 free_hash (image->icall_wrapper_cache);
1863 free_hash (image->proxy_isinst_cache);
1864 free_hash (image->var_cache_slow);
1865 free_hash (image->mvar_cache_slow);
1866 free_hash (image->var_cache_constrained);
1867 free_hash (image->mvar_cache_constrained);
1868 free_hash (image->wrapper_param_names);
1869 free_hash (image->pinvoke_scopes);
1870 free_hash (image->pinvoke_scope_filenames);
1871 free_hash (image->native_func_wrapper_cache);
1872 free_hash (image->typespec_cache);
1873
1874 mono_wrapper_caches_free (&image->wrapper_caches);
1875
1876 for (i = 0; i < image->gshared_types_len; ++i)
1877 free_hash (image->gshared_types [i]);
1878 g_free (image->gshared_types);
1879
1880 /* The ownership of signatures is not well defined */
1881 g_hash_table_destroy (image->memberref_signatures);
1882 g_hash_table_destroy (image->helper_signatures);
1883 g_hash_table_destroy (image->method_signatures);
1884
1885 if (image->rgctx_template_hash)
1886 g_hash_table_destroy (image->rgctx_template_hash);
1887
1888 if (image->property_hash)
1889 mono_property_hash_destroy (image->property_hash);
1890
1891 /*
1892 reflection_info_unregister_classes is only required by dynamic images, which will not be properly
1893 cleared during shutdown as we don't perform regular appdomain unload for the root one.
1894 */
1895 g_assert (!image->reflection_info_unregister_classes || mono_runtime_is_shutting_down ());
1896 image->reflection_info_unregister_classes = NULL;
1897
1898 if (image->interface_bitset) {
1899 mono_unload_interface_ids (image->interface_bitset);
1900 mono_bitset_free (image->interface_bitset);
1901 }
1902 if (image->image_info){
1903 MonoCLIImageInfo *ii = (MonoCLIImageInfo *)image->image_info;
1904
1905 if (ii->cli_section_tables)
1906 g_free (ii->cli_section_tables);
1907 if (ii->cli_sections)
1908 g_free (ii->cli_sections);
1909 g_free (image->image_info);
1910 }
1911
1912 mono_image_close_except_pools_all (image->files, image->file_count);
1913 mono_image_close_except_pools_all (image->modules, image->module_count);
1914 if (image->modules_loaded)
1915 g_free (image->modules_loaded);
1916
1917 mono_os_mutex_destroy (&image->szarray_cache_lock);
1918 mono_os_mutex_destroy (&image->lock);
1919
1920 /*g_print ("destroy image %p (dynamic: %d)\n", image, image->dynamic);*/
1921 if (image_is_dynamic (image)) {
1922 /* Dynamic images are GC_MALLOCed */
1923 g_free ((char*)image->module_name);
1924 mono_dynamic_image_free ((MonoDynamicImage*)image);
1925 }
1926
1927 mono_profiler_module_event (image, MONO_PROFILE_END_UNLOAD);
1928
1929 return TRUE;
1930 }
1931
1932 static void
1933 mono_image_close_all (MonoImage**images, int image_count)
1934 {
1935 for (int i = 0; i < image_count; ++i) {
1936 if (images [i])
1937 mono_image_close_finish (images [i]);
1938 }
1939 if (images)
1940 g_free (images);
1941 }
1942
1943 void
1944 mono_image_close_finish (MonoImage *image)
1945 {
1946 int i;
1947
1948 if (image->references && !image_is_dynamic (image)) {
1949 for (i = 0; i < image->nreferences; i++) {
1950 if (image->references [i] && image->references [i] != REFERENCE_MISSING)
1951 mono_assembly_close_finish (image->references [i]);
1952 }
1953
1954 g_free (image->references);
1955 image->references = NULL;
1956 }
1957
1958 mono_image_close_all (image->files, image->file_count);
1959 mono_image_close_all (image->modules, image->module_count);
1960
1961 #ifndef DISABLE_PERFCOUNTERS
1962 mono_perfcounters->loader_bytes -= mono_mempool_get_allocated (image->mempool);
1963 #endif
1964
1965 if (!image_is_dynamic (image)) {
1966 if (debug_assembly_unload)
1967 mono_mempool_invalidate (image->mempool);
1968 else {
1969 mono_mempool_destroy (image->mempool);
1970 g_free (image);
1971 }
1972 } else {
1973 if (debug_assembly_unload)
1974 mono_mempool_invalidate (image->mempool);
1975 else {
1976 mono_mempool_destroy (image->mempool);
1977 mono_dynamic_image_free_image ((MonoDynamicImage*)image);
1978 }
1979 }
1980 }
1981
1982 /**
1983 * mono_image_close:
1984 * @image: The image file we wish to close
1985 *
1986 * Closes an image file, deallocates all memory consumed and
1987 * unmaps all possible sections of the file
1988 */
1989 void
1990 mono_image_close (MonoImage *image)
1991 {
1992 if (mono_image_close_except_pools (image))
1993 mono_image_close_finish (image);
1994 }
1995
1996 /**
1997 * mono_image_strerror:
1998 * @status: an code indicating the result from a recent operation
1999 *
2000 * Returns: a string describing the error
2001 */
2002 const char *
2003 mono_image_strerror (MonoImageOpenStatus status)
2004 {
2005 switch (status){
2006 case MONO_IMAGE_OK:
2007 return "success";
2008 case MONO_IMAGE_ERROR_ERRNO:
2009 return strerror (errno);
2010 case MONO_IMAGE_IMAGE_INVALID:
2011 return "File does not contain a valid CIL image";
2012 case MONO_IMAGE_MISSING_ASSEMBLYREF:
2013 return "An assembly was referenced, but could not be found";
2014 }
2015 return "Internal error";
2016 }
2017
2018 static gpointer
2019 mono_image_walk_resource_tree (MonoCLIImageInfo *info, guint32 res_id,
2020 guint32 lang_id, gunichar2 *name,
2021 MonoPEResourceDirEntry *entry,
2022 MonoPEResourceDir *root, guint32 level)
2023 {
2024 gboolean is_string, is_dir;
2025 guint32 name_offset, dir_offset;
2026
2027 /* Level 0 holds a directory entry for each type of resource
2028 * (identified by ID or name).
2029 *
2030 * Level 1 holds a directory entry for each named resource
2031 * item, and each "anonymous" item of a particular type of
2032 * resource.
2033 *
2034 * Level 2 holds a directory entry for each language pointing to
2035 * the actual data.
2036 */
2037 is_string = MONO_PE_RES_DIR_ENTRY_NAME_IS_STRING (*entry);
2038 name_offset = MONO_PE_RES_DIR_ENTRY_NAME_OFFSET (*entry);
2039
2040 is_dir = MONO_PE_RES_DIR_ENTRY_IS_DIR (*entry);
2041 dir_offset = MONO_PE_RES_DIR_ENTRY_DIR_OFFSET (*entry);
2042
2043 if(level==0) {
2044 if (is_string)
2045 return NULL;
2046 } else if (level==1) {
2047 if (res_id != name_offset)
2048 return NULL;
2049 #if 0
2050 if(name!=NULL &&
2051 is_string==TRUE && name!=lookup (name_offset)) {
2052 return(NULL);
2053 }
2054 #endif
2055 } else if (level==2) {
2056 if (is_string || (lang_id != 0 && name_offset != lang_id))
2057 return NULL;
2058 } else {
2059 g_assert_not_reached ();
2060 }
2061
2062 if (is_dir) {
2063 MonoPEResourceDir *res_dir=(MonoPEResourceDir *)(((char *)root)+dir_offset);
2064 MonoPEResourceDirEntry *sub_entries=(MonoPEResourceDirEntry *)(res_dir+1);
2065 guint32 entries, i;
2066
2067 entries = GUINT16_FROM_LE (res_dir->res_named_entries) + GUINT16_FROM_LE (res_dir->res_id_entries);
2068
2069 for(i=0; i<entries; i++) {
2070 MonoPEResourceDirEntry *sub_entry=&sub_entries[i];
2071 gpointer ret;
2072
2073 ret=mono_image_walk_resource_tree (info, res_id,
2074 lang_id, name,
2075 sub_entry, root,
2076 level+1);
2077 if(ret!=NULL) {
2078 return(ret);
2079 }
2080 }
2081
2082 return(NULL);
2083 } else {
2084 MonoPEResourceDataEntry *data_entry=(MonoPEResourceDataEntry *)((char *)(root)+dir_offset);
2085 MonoPEResourceDataEntry *res;
2086
2087 res = g_new0 (MonoPEResourceDataEntry, 1);
2088
2089 res->rde_data_offset = GUINT32_TO_LE (data_entry->rde_data_offset);
2090 res->rde_size = GUINT32_TO_LE (data_entry->rde_size);
2091 res->rde_codepage = GUINT32_TO_LE (data_entry->rde_codepage);
2092 res->rde_reserved = GUINT32_TO_LE (data_entry->rde_reserved);
2093
2094 return (res);
2095 }
2096 }
2097
2098 /**
2099 * mono_image_lookup_resource:
2100 * @image: the image to look up the resource in
2101 * @res_id: A MONO_PE_RESOURCE_ID_ that represents the resource ID to lookup.
2102 * @lang_id: The language id.
2103 * @name: the resource name to lookup.
2104 *
2105 * Returns: NULL if not found, otherwise a pointer to the in-memory representation
2106 * of the given resource. The caller should free it using g_free () when no longer
2107 * needed.
2108 */
2109 gpointer
2110 mono_image_lookup_resource (MonoImage *image, guint32 res_id, guint32 lang_id, gunichar2 *name)
2111 {
2112 MonoCLIImageInfo *info;
2113 MonoDotNetHeader *header;
2114 MonoPEDatadir *datadir;
2115 MonoPEDirEntry *rsrc;
2116 MonoPEResourceDir *resource_dir;
2117 MonoPEResourceDirEntry *res_entries;
2118 guint32 entries, i;
2119
2120 if(image==NULL) {
2121 return(NULL);
2122 }
2123
2124 mono_image_ensure_section_idx (image, MONO_SECTION_RSRC);
2125
2126 info = (MonoCLIImageInfo *)image->image_info;
2127 if(info==NULL) {
2128 return(NULL);
2129 }
2130
2131 header=&info->cli_header;
2132 if(header==NULL) {
2133 return(NULL);
2134 }
2135
2136 datadir=&header->datadir;
2137 if(datadir==NULL) {
2138 return(NULL);
2139 }
2140
2141 rsrc=&datadir->pe_resource_table;
2142 if(rsrc==NULL) {
2143 return(NULL);
2144 }
2145
2146 resource_dir=(MonoPEResourceDir *)mono_image_rva_map (image, rsrc->rva);
2147 if(resource_dir==NULL) {
2148 return(NULL);
2149 }
2150
2151 entries = GUINT16_FROM_LE (resource_dir->res_named_entries) + GUINT16_FROM_LE (resource_dir->res_id_entries);
2152 res_entries=(MonoPEResourceDirEntry *)(resource_dir+1);
2153
2154 for(i=0; i<entries; i++) {
2155 MonoPEResourceDirEntry *entry=&res_entries[i];
2156 gpointer ret;
2157
2158 ret=mono_image_walk_resource_tree (info, res_id, lang_id,
2159 name, entry, resource_dir,
2160 0);
2161 if(ret!=NULL) {
2162 return(ret);
2163 }
2164 }
2165
2166 return(NULL);
2167 }
2168
2169 /**
2170 * mono_image_get_entry_point:
2171 * @image: the image where the entry point will be looked up.
2172 *
2173 * Use this routine to determine the metadata token for method that
2174 * has been flagged as the entry point.
2175 *
2176 * Returns: the token for the entry point method in the image
2177 */
2178 guint32
2179 mono_image_get_entry_point (MonoImage *image)
2180 {
2181 return ((MonoCLIImageInfo*)image->image_info)->cli_cli_header.ch_entry_point;
2182 }
2183
2184 /**
2185 * mono_image_get_resource:
2186 * @image: the image where the resource will be looked up.
2187 * @offset: The offset to add to the resource
2188 * @size: a pointer to an int where the size of the resource will be stored
2189 *
2190 * This is a low-level routine that fetches a resource from the
2191 * metadata that starts at a given @offset. The @size parameter is
2192 * filled with the data field as encoded in the metadata.
2193 *
2194 * Returns: the pointer to the resource whose offset is @offset.
2195 */
2196 const char*
2197 mono_image_get_resource (MonoImage *image, guint32 offset, guint32 *size)
2198 {
2199 MonoCLIImageInfo *iinfo = (MonoCLIImageInfo *)image->image_info;
2200 MonoCLIHeader *ch = &iinfo->cli_cli_header;
2201 const char* data;
2202
2203 if (!ch->ch_resources.rva || offset + 4 > ch->ch_resources.size)
2204 return NULL;
2205
2206 data = mono_image_rva_map (image, ch->ch_resources.rva);
2207 if (!data)
2208 return NULL;
2209 data += offset;
2210 if (size)
2211 *size = read32 (data);
2212 data += 4;
2213 return data;
2214 }
2215
2216 // Returning NULL with no error set will be interpeted as "not found"
2217 MonoImage*
2218 mono_image_load_file_for_image_checked (MonoImage *image, int fileidx, MonoError *error)
2219 {
2220 char *base_dir, *name;
2221 MonoImage *res;
2222 MonoTableInfo *t = &image->tables [MONO_TABLE_FILE];
2223 const char *fname;
2224 guint32 fname_id;
2225
2226 if (fileidx < 1 || fileidx > t->rows)
2227 return NULL;
2228
2229 mono_image_lock (image);
2230 if (image->files && image->files [fileidx - 1]) {
2231 mono_image_unlock (image);
2232 return image->files [fileidx - 1];
2233 }
2234 mono_image_unlock (image);
2235
2236 fname_id = mono_metadata_decode_row_col (t, fileidx - 1, MONO_FILE_NAME);
2237 fname = mono_metadata_string_heap (image, fname_id);
2238 base_dir = g_path_get_dirname (image->name);
2239 name = g_build_filename (base_dir, fname, NULL);
2240 res = mono_image_open (name, NULL);
2241 if (!res)
2242 goto done;
2243
2244 mono_image_lock (image);
2245 if (image->files && image->files [fileidx - 1]) {
2246 MonoImage *old = res;
2247 res = image->files [fileidx - 1];
2248 mono_image_unlock (image);
2249 mono_image_close (old);
2250 } else {
2251 int i;
2252 /* g_print ("loaded file %s from %s (%p)\n", name, image->name, image->assembly); */
2253 if (!assign_assembly_parent_for_netmodule (res, image, error)) {
2254 mono_image_unlock (image);
2255 mono_image_close (res);
2256 return NULL;
2257 }
2258
2259 for (i = 0; i < res->module_count; ++i) {
2260 if (res->modules [i] && !res->modules [i]->assembly)
2261 res->modules [i]->assembly = image->assembly;
2262 }
2263
2264 if (!image->files) {
2265 image->files = g_new0 (MonoImage*, t->rows);
2266 image->file_count = t->rows;
2267 }
2268 image->files [fileidx - 1] = res;
2269 mono_image_unlock (image);
2270 /* vtable fixup can't happen with the image lock held */
2271 #ifdef HOST_WIN32
2272 if (res->is_module_handle)
2273 mono_image_fixup_vtable (res);
2274 #endif
2275 }
2276
2277 done:
2278 g_free (name);
2279 g_free (base_dir);
2280 return res;
2281 }
2282
2283 MonoImage*
2284 mono_image_load_file_for_image (MonoImage *image, int fileidx)
2285 {
2286 MonoError error;
2287 mono_error_init (&error);
2288 MonoImage *result = mono_image_load_file_for_image_checked (image, fileidx, &error);
2289 mono_error_assert_ok (&error);
2290 mono_error_cleanup (&error);
2291 return result;
2292 }
2293
2294 /**
2295 * mono_image_get_strong_name:
2296 * @image: a MonoImage
2297 * @size: a guint32 pointer, or NULL.
2298 *
2299 * If the image has a strong name, and @size is not NULL, the value
2300 * pointed to by size will have the size of the strong name.
2301 *
2302 * Returns: NULL if the image does not have a strong name, or a
2303 * pointer to the public key.
2304 */
2305 const char*
2306 mono_image_get_strong_name (MonoImage *image, guint32 *size)
2307 {
2308 MonoCLIImageInfo *iinfo = (MonoCLIImageInfo *)image->image_info;
2309 MonoPEDirEntry *de = &iinfo->cli_cli_header.ch_strong_name;
2310 const char* data;
2311
2312 if (!de->size || !de->rva)
2313 return NULL;
2314 data = mono_image_rva_map (image, de->rva);
2315 if (!data)
2316 return NULL;
2317 if (size)
2318 *size = de->size;
2319 return data;
2320 }
2321
2322 /**
2323 * mono_image_strong_name_position:
2324 * @image: a MonoImage
2325 * @size: a guint32 pointer, or NULL.
2326 *
2327 * If the image has a strong name, and @size is not NULL, the value
2328 * pointed to by size will have the size of the strong name.
2329 *
2330 * Returns: the position within the image file where the strong name
2331 * is stored.
2332 */
2333 guint32
2334 mono_image_strong_name_position (MonoImage *image, guint32 *size)
2335 {
2336 MonoCLIImageInfo *iinfo = (MonoCLIImageInfo *)image->image_info;
2337 MonoPEDirEntry *de = &iinfo->cli_cli_header.ch_strong_name;
2338 guint32 pos;
2339
2340 if (size)
2341 *size = de->size;
2342 if (!de->size || !de->rva)
2343 return 0;
2344 pos = mono_cli_rva_image_map (image, de->rva);
2345 return pos == INVALID_ADDRESS ? 0 : pos;
2346 }
2347
2348 /**
2349 * mono_image_get_public_key:
2350 * @image: a MonoImage
2351 * @size: a guint32 pointer, or NULL.
2352 *
2353 * This is used to obtain the public key in the @image.
2354 *
2355 * If the image has a public key, and @size is not NULL, the value
2356 * pointed to by size will have the size of the public key.
2357 *
2358 * Returns: NULL if the image does not have a public key, or a pointer
2359 * to the public key.
2360 */
2361 const char*
2362 mono_image_get_public_key (MonoImage *image, guint32 *size)
2363 {
2364 const char *pubkey;
2365 guint32 len, tok;
2366
2367 if (image_is_dynamic (image)) {
2368 if (size)
2369 *size = ((MonoDynamicImage*)image)->public_key_len;
2370 return (char*)((MonoDynamicImage*)image)->public_key;
2371 }
2372 if (image->tables [MONO_TABLE_ASSEMBLY].rows != 1)
2373 return NULL;
2374 tok = mono_metadata_decode_row_col (&image->tables [MONO_TABLE_ASSEMBLY], 0, MONO_ASSEMBLY_PUBLIC_KEY);
2375 if (!tok)
2376 return NULL;
2377 pubkey = mono_metadata_blob_heap (image, tok);
2378 len = mono_metadata_decode_blob_size (pubkey, &pubkey);
2379 if (size)
2380 *size = len;
2381 return pubkey;
2382 }
2383
2384 /**
2385 * mono_image_get_name:
2386 * @name: a MonoImage
2387 *
2388 * Returns: the name of the assembly.
2389 */
2390 const char*
2391 mono_image_get_name (MonoImage *image)
2392 {
2393 return image->assembly_name;
2394 }
2395
2396 /**
2397 * mono_image_get_filename:
2398 * @image: a MonoImage
2399 *
2400 * Used to get the filename that hold the actual MonoImage
2401 *
2402 * Returns: the filename.
2403 */
2404 const char*
2405 mono_image_get_filename (MonoImage *image)
2406 {
2407 return image->name;
2408 }
2409
2410 const char*
2411 mono_image_get_guid (MonoImage *image)
2412 {
2413 return image->guid;
2414 }
2415
2416 const MonoTableInfo*
2417 mono_image_get_table_info (MonoImage *image, int table_id)
2418 {
2419 if (table_id < 0 || table_id >= MONO_TABLE_NUM)
2420 return NULL;
2421 return &image->tables [table_id];
2422 }
2423
2424 int
2425 mono_image_get_table_rows (MonoImage *image, int table_id)
2426 {
2427 if (table_id < 0 || table_id >= MONO_TABLE_NUM)
2428 return 0;
2429 return image->tables [table_id].rows;
2430 }
2431
2432 int
2433 mono_table_info_get_rows (const MonoTableInfo *table)
2434 {
2435 return table->rows;
2436 }
2437
2438 /**
2439 * mono_image_get_assembly:
2440 * @image: the MonoImage.
2441 *
2442 * Use this routine to get the assembly that owns this image.
2443 *
2444 * Returns: the assembly that holds this image.
2445 */
2446 MonoAssembly*
2447 mono_image_get_assembly (MonoImage *image)
2448 {
2449 return image->assembly;
2450 }
2451
2452 /**
2453 * mono_image_is_dynamic:
2454 * @image: the MonoImage
2455 *
2456 * Determines if the given image was created dynamically through the
2457 * System.Reflection.Emit API
2458 *
2459 * Returns: TRUE if the image was created dynamically, FALSE if not.
2460 */
2461 gboolean
2462 mono_image_is_dynamic (MonoImage *image)
2463 {
2464 return image_is_dynamic (image);
2465 }
2466
2467 /**
2468 * mono_image_has_authenticode_entry:
2469 * @image: the MonoImage
2470 *
2471 * Use this routine to determine if the image has a Authenticode
2472 * Certificate Table.
2473 *
2474 * Returns: TRUE if the image contains an authenticode entry in the PE
2475 * directory.
2476 */
2477 gboolean
2478 mono_image_has_authenticode_entry (MonoImage *image)
2479 {
2480 MonoCLIImageInfo *iinfo = (MonoCLIImageInfo *)image->image_info;
2481 MonoDotNetHeader *header = &iinfo->cli_header;
2482 MonoPEDirEntry *de = &header->datadir.pe_certificate_table;
2483 // the Authenticode "pre" (non ASN.1) header is 8 bytes long
2484 return ((de->rva != 0) && (de->size > 8));
2485 }
2486
2487 gpointer
2488 mono_image_alloc (MonoImage *image, guint size)
2489 {
2490 gpointer res;
2491
2492 #ifndef DISABLE_PERFCOUNTERS
2493 mono_perfcounters->loader_bytes += size;
2494 #endif
2495 mono_image_lock (image);
2496 res = mono_mempool_alloc (image->mempool, size);
2497 mono_image_unlock (image);
2498
2499 return res;
2500 }
2501
2502 gpointer
2503 mono_image_alloc0 (MonoImage *image, guint size)
2504 {
2505 gpointer res;
2506
2507 #ifndef DISABLE_PERFCOUNTERS
2508 mono_perfcounters->loader_bytes += size;
2509 #endif
2510 mono_image_lock (image);
2511 res = mono_mempool_alloc0 (image->mempool, size);
2512 mono_image_unlock (image);
2513
2514 return res;
2515 }
2516
2517 char*
2518 mono_image_strdup (MonoImage *image, const char *s)
2519 {
2520 char *res;
2521
2522 #ifndef DISABLE_PERFCOUNTERS
2523 mono_perfcounters->loader_bytes += strlen (s);
2524 #endif
2525 mono_image_lock (image);
2526 res = mono_mempool_strdup (image->mempool, s);
2527 mono_image_unlock (image);
2528
2529 return res;
2530 }
2531
2532 GList*
2533 g_list_prepend_image (MonoImage *image, GList *list, gpointer data)
2534 {
2535 GList *new_list;
2536
2537 new_list = (GList *)mono_image_alloc (image, sizeof (GList));
2538 new_list->data = data;
2539 new_list->prev = list ? list->prev : NULL;
2540 new_list->next = list;
2541
2542 if (new_list->prev)
2543 new_list->prev->next = new_list;
2544 if (list)
2545 list->prev = new_list;
2546
2547 return new_list;
2548 }
2549
2550 GSList*
2551 g_slist_append_image (MonoImage *image, GSList *list, gpointer data)
2552 {
2553 GSList *new_list;
2554
2555 new_list = (GSList *)mono_image_alloc (image, sizeof (GSList));
2556 new_list->data = data;
2557 new_list->next = NULL;
2558
2559 return g_slist_concat (list, new_list);
2560 }
2561
2562 void
2563 mono_image_lock (MonoImage *image)
2564 {
2565 mono_locks_os_acquire (&image->lock, ImageDataLock);
2566 }
2567
2568 void
2569 mono_image_unlock (MonoImage *image)
2570 {
2571 mono_locks_os_release (&image->lock, ImageDataLock);
2572 }
2573
2574
2575 /**
2576 * mono_image_property_lookup:
2577 *
2578 * Lookup a property on @image. Used to store very rare fields of MonoClass and MonoMethod.
2579 *
2580 * LOCKING: Takes the image lock
2581 */
2582 gpointer
2583 mono_image_property_lookup (MonoImage *image, gpointer subject, guint32 property)
2584 {
2585 gpointer res;
2586
2587 mono_image_lock (image);
2588 res = mono_property_hash_lookup (image->property_hash, subject, property);
2589 mono_image_unlock (image);
2590
2591 return res;
2592 }
2593
2594 /**
2595 * mono_image_property_insert:
2596 *
2597 * Insert a new property @property with value @value on @subject in @image. Used to store very rare fields of MonoClass and MonoMethod.
2598 *
2599 * LOCKING: Takes the image lock
2600 */
2601 void
2602 mono_image_property_insert (MonoImage *image, gpointer subject, guint32 property, gpointer value)
2603 {
2604 mono_image_lock (image);
2605 mono_property_hash_insert (image->property_hash, subject, property, value);
2606 mono_image_unlock (image);
2607 }
2608
2609 /**
2610 * mono_image_property_remove:
2611 *
2612 * Remove all properties associated with @subject in @image. Used to store very rare fields of MonoClass and MonoMethod.
2613 *
2614 * LOCKING: Takes the image lock
2615 */
2616 void
2617 mono_image_property_remove (MonoImage *image, gpointer subject)
2618 {
2619 mono_image_lock (image);
2620 mono_property_hash_remove_object (image->property_hash, subject);
2621 mono_image_unlock (image);
2622 }
2623
2624 void
2625 mono_image_append_class_to_reflection_info_set (MonoClass *klass)
2626 {
2627 MonoImage *image = klass->image;
2628 g_assert (image_is_dynamic (image));
2629 mono_image_lock (image);
2630 image->reflection_info_unregister_classes = g_slist_prepend_mempool (image->mempool, image->reflection_info_unregister_classes, klass);
2631 mono_image_unlock (image);
2632 }
2633
2634 // This is support for the mempool reference tracking feature in checked-build, but lives in image.c due to use of static variables of this file.
2635
2636 /**
2637 * mono_find_image_owner:
2638 *
2639 * Find the image, if any, which a given pointer is located in the memory of.
2640 */
2641 MonoImage *
2642 mono_find_image_owner (void *ptr)
2643 {
2644 mono_images_lock ();
2645
2646 MonoImage *owner = NULL;
2647
2648 // Iterate over both by-path image hashes
2649 const int hash_candidates[] = {IMAGES_HASH_PATH, IMAGES_HASH_PATH_REFONLY};
2650 int hash_idx;
2651 for (hash_idx = 0; !owner && hash_idx < G_N_ELEMENTS (hash_candidates); hash_idx++)
2652 {
2653 GHashTable *target = loaded_images_hashes [hash_candidates [hash_idx]];
2654 GHashTableIter iter;
2655 MonoImage *image;
2656
2657 // Iterate over images within a hash
2658 g_hash_table_iter_init (&iter, target);
2659 while (!owner && g_hash_table_iter_next(&iter, NULL, (gpointer *)&image))
2660 {
2661 mono_image_lock (image);
2662 if (mono_mempool_contains_addr (image->mempool, ptr))
2663 owner = image;
2664 mono_image_unlock (image);
2665 }
2666 }
2667
2668 mono_images_unlock ();
2669
2670 return owner;
2671 }
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