8 #include <mono/utils/mono-io-portability.h>
9 #include <mono/metadata/metadata.h>
10 #include <mono/metadata/class.h>
11 #include <mono/metadata/class-internals.h>
12 #include <mono/metadata/object.h>
13 #include <mono/metadata/gc-internal.h>
14 #include <mono/metadata/profiler.h>
15 #include <mono/metadata/profiler-private.h>
17 #ifndef DISABLE_PORTABILITY
21 int __mono_io_portability_helpers = PORTABILITY_UNKNOWN;
23 static inline gchar *mono_portability_find_file_internal (GString **report, const gchar *pathname, gboolean last_exists);
25 void mono_portability_helpers_init (void)
29 if (__mono_io_portability_helpers != PORTABILITY_UNKNOWN)
32 __mono_io_portability_helpers = PORTABILITY_NONE;
34 env = g_getenv ("MONO_IOMAP");
36 /* parse the environment setting and set up some vars
39 gchar **options = g_strsplit (env, ":", 0);
42 if (options == NULL) {
43 /* This shouldn't happen */
47 for (i = 0; options[i] != NULL; i++) {
49 g_message ("%s: Setting option [%s]", __func__,
52 if (!strncasecmp (options[i], "drive", 5)) {
53 __mono_io_portability_helpers |= PORTABILITY_DRIVE;
54 } else if (!strncasecmp (options[i], "case", 4)) {
55 __mono_io_portability_helpers |= PORTABILITY_CASE;
56 } else if (!strncasecmp (options[i], "all", 3)) {
57 __mono_io_portability_helpers |= (PORTABILITY_DRIVE | PORTABILITY_CASE);
63 /* Returns newly allocated string, or NULL on failure */
64 static gchar *find_in_dir (DIR *current, const gchar *name)
69 g_message ("%s: looking for [%s]\n", __func__, name);
72 while((entry = readdir (current)) != NULL) {
74 g_message ("%s: found [%s]\n", __func__, entry->d_name);
77 if (!g_ascii_strcasecmp (name, entry->d_name)) {
81 g_message ("%s: matched [%s] to [%s]\n", __func__,
85 ret = g_strdup (entry->d_name);
92 g_message ("%s: returning NULL\n", __func__);
100 static inline void append_report (GString **report, const gchar *format, ...)
102 #if defined (_EGLIB_MAJOR) || GLIB_CHECK_VERSION(2,14,0)
105 *report = g_string_new ("");
107 va_start (ap, format);
108 g_string_append_vprintf (*report, format, ap);
111 g_assert_not_reached ();
115 static inline void do_mono_profiler_iomap (GString **report, const char *pathname, const char *new_pathname)
118 GString *tmp = report ? *report : NULL;
122 rep = g_string_free (tmp, FALSE);
124 g_string_free (tmp, TRUE);
128 mono_profiler_iomap (rep, pathname, new_pathname);
132 gchar *mono_portability_find_file (const gchar *pathname, gboolean last_exists)
134 GString *report = NULL;
137 if (!pathname || !pathname [0])
139 ret = mono_portability_find_file_internal (&report, pathname, last_exists);
142 g_string_free (report, TRUE);
147 /* Returns newly-allocated string or NULL on failure */
148 static inline gchar *mono_portability_find_file_internal (GString **report, const gchar *pathname, gboolean last_exists)
150 gchar *new_pathname, **components, **new_components;
151 int num_components = 0, component = 0;
152 DIR *scanning = NULL;
154 gboolean drive_stripped = FALSE;
155 gboolean do_report = (mono_profiler_get_events () & MONO_PROFILE_IOMAP_EVENTS) != 0;
157 if (IS_PORTABILITY_NONE) {
162 append_report (report, " - Requested file path: '%s'\n", pathname);
164 new_pathname = g_strdup (pathname);
167 g_message ("%s: Finding [%s] last_exists: %s\n", __func__, pathname,
168 last_exists?"TRUE":"FALSE");
172 access (new_pathname, F_OK) == 0) {
174 g_message ("%s: Found it without doing anything\n", __func__);
176 return(new_pathname);
179 /* First turn '\' into '/' and strip any drive letters */
180 g_strdelimit (new_pathname, "\\", '/');
183 g_message ("%s: Fixed slashes, now have [%s]\n", __func__,
187 if (IS_PORTABILITY_DRIVE &&
188 g_ascii_isalpha (new_pathname[0]) &&
189 (new_pathname[1] == ':')) {
190 int len = strlen (new_pathname);
192 g_memmove (new_pathname, new_pathname+2, len - 2);
193 new_pathname[len - 2] = '\0';
196 append_report (report, " - Stripped drive letter.\n");
197 drive_stripped = TRUE;
200 g_message ("%s: Stripped drive letter, now looking for [%s]\n",
201 __func__, new_pathname);
205 len = strlen (new_pathname);
206 if (len > 1 && new_pathname [len - 1] == '/') {
207 new_pathname [len - 1] = 0;
209 g_message ("%s: requested name had a trailing /, rewritten to '%s'\n",
210 __func__, new_pathname);
215 access (new_pathname, F_OK) == 0) {
217 g_message ("%s: Found it\n", __func__);
219 if (do_report && drive_stripped)
220 do_mono_profiler_iomap (report, pathname, new_pathname);
222 return(new_pathname);
225 /* OK, have to work harder. Take each path component in turn
226 * and do a case-insensitive directory scan for it
229 if (!(IS_PORTABILITY_CASE)) {
230 g_free (new_pathname);
234 components = g_strsplit (new_pathname, "/", 0);
235 if (components == NULL) {
236 /* This shouldn't happen */
237 g_free (new_pathname);
241 while(components[num_components] != NULL) {
244 g_free (new_pathname);
246 if (num_components == 0){
251 new_components = (gchar **)g_new0 (gchar **, num_components + 1);
253 if (num_components > 1) {
254 if (strcmp (components[0], "") == 0) {
255 /* first component blank, so start at / */
256 scanning = opendir ("/");
257 if (scanning == NULL) {
259 g_message ("%s: opendir 1 error: %s", __func__,
262 g_strfreev (new_components);
263 g_strfreev (components);
267 new_components[component++] = g_strdup ("");
272 current = opendir (".");
273 if (current == NULL) {
275 g_message ("%s: opendir 2 error: %s", __func__,
278 g_strfreev (new_components);
279 g_strfreev (components);
283 entry = find_in_dir (current, components[0]);
285 g_strfreev (new_components);
286 g_strfreev (components);
290 scanning = opendir (entry);
291 if (scanning == NULL) {
293 g_message ("%s: opendir 3 error: %s", __func__,
297 g_strfreev (new_components);
298 g_strfreev (components);
302 new_components[component++] = entry;
306 if (strcmp (components[0], "") == 0) {
307 /* First and only component blank */
308 new_components[component++] = g_strdup ("");
313 current = opendir (".");
314 if (current == NULL) {
316 g_message ("%s: opendir 4 error: %s",
320 g_strfreev (new_components);
321 g_strfreev (components);
325 entry = find_in_dir (current, components[0]);
327 g_strfreev (new_components);
328 g_strfreev (components);
332 new_components[component++] = entry;
335 new_components[component++] = g_strdup (components[0]);
340 g_message ("%s: Got first entry: [%s]\n", __func__, new_components[0]);
343 g_assert (component == 1);
345 for(; component < num_components; component++) {
350 component == num_components -1) {
351 entry = g_strdup (components[component]);
354 entry = find_in_dir (scanning, components[component]);
356 g_strfreev (new_components);
357 g_strfreev (components);
362 new_components[component] = entry;
364 if (component < num_components -1) {
365 path_so_far = g_strjoinv ("/", new_components);
367 scanning = opendir (path_so_far);
368 g_free (path_so_far);
369 if (scanning == NULL) {
370 g_strfreev (new_components);
371 g_strfreev (components);
377 g_strfreev (components);
379 new_pathname = g_strjoinv ("/", new_components);
382 g_message ("%s: pathname [%s] became [%s]\n", __func__, pathname,
386 g_strfreev (new_components);
389 access (new_pathname, F_OK) == 0) ||
391 if (do_report && strcmp (pathname, new_pathname) != 0)
392 do_mono_profiler_iomap (report, pathname, new_pathname);
394 return(new_pathname);
397 g_free (new_pathname);