#include "config.h"
-#include <glib.h>
+#include <string.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <errno.h>
#include <mono/utils/mono-io-portability.h>
+#include <mono/metadata/profiler-private.h>
+
+#ifndef DISABLE_PORTABILITY
+
+#include <dirent.h>
-int __mono_io_portability_helpers = PORTABILITY_UNKNOWN;
+int mono_io_portability_helpers = PORTABILITY_UNKNOWN;
+
+static inline gchar *mono_portability_find_file_internal (GString **report, const gchar *pathname, gboolean last_exists);
void mono_portability_helpers_init (void)
{
const gchar *env;
- if (__mono_io_portability_helpers != PORTABILITY_UNKNOWN)
+ if (mono_io_portability_helpers != PORTABILITY_UNKNOWN)
return;
- __mono_io_portability_helpers = PORTABILITY_NONE;
-
+ mono_io_portability_helpers = PORTABILITY_NONE;
+
env = g_getenv ("MONO_IOMAP");
if (env != NULL) {
/* parse the environment setting and set up some vars
options[i]);
#endif
if (!strncasecmp (options[i], "drive", 5)) {
- __mono_io_portability_helpers |= PORTABILITY_DRIVE;
+ mono_io_portability_helpers |= PORTABILITY_DRIVE;
} else if (!strncasecmp (options[i], "case", 4)) {
- __mono_io_portability_helpers |= PORTABILITY_CASE;
+ mono_io_portability_helpers |= PORTABILITY_CASE;
} else if (!strncasecmp (options[i], "all", 3)) {
- __mono_io_portability_helpers |= (PORTABILITY_DRIVE |
- PORTABILITY_CASE);
- }
+ mono_io_portability_helpers |= (PORTABILITY_DRIVE | PORTABILITY_CASE);
+ }
}
- }
+ }
+}
+
+/* Returns newly allocated string, or NULL on failure */
+static gchar *find_in_dir (DIR *current, const gchar *name)
+{
+ struct dirent *entry;
+
+#ifdef DEBUG
+ g_message ("%s: looking for [%s]\n", __func__, name);
+#endif
+
+ while((entry = readdir (current)) != NULL) {
+#ifdef DEBUGX
+ g_message ("%s: found [%s]\n", __func__, entry->d_name);
+#endif
+
+ if (!g_ascii_strcasecmp (name, entry->d_name)) {
+ char *ret;
+
+#ifdef DEBUG
+ g_message ("%s: matched [%s] to [%s]\n", __func__,
+ entry->d_name, name);
+#endif
+
+ ret = g_strdup (entry->d_name);
+ closedir (current);
+ return ret;
+ }
+ }
+
+#ifdef DEBUG
+ g_message ("%s: returning NULL\n", __func__);
+#endif
+
+ closedir (current);
+
+ return(NULL);
+}
+
+static inline void append_report (GString **report, const gchar *format, ...)
+{
+#if defined (_EGLIB_MAJOR) || GLIB_CHECK_VERSION(2,14,0)
+ va_list ap;
+ if (!*report)
+ *report = g_string_new ("");
+
+ va_start (ap, format);
+ g_string_append_vprintf (*report, format, ap);
+ va_end (ap);
+#else
+ g_assert_not_reached ();
+#endif
+}
+
+static inline void do_mono_profiler_iomap (GString **report, const char *pathname, const char *new_pathname)
+{
+ char *rep = NULL;
+ GString *tmp = report ? *report : NULL;
+
+ if (tmp) {
+ if (tmp->len > 0)
+ rep = g_string_free (tmp, FALSE);
+ else
+ g_string_free (tmp, TRUE);
+ *report = NULL;
+ }
+
+ mono_profiler_iomap (rep, pathname, new_pathname);
+ g_free (rep);
+}
+
+gchar *mono_portability_find_file (const gchar *pathname, gboolean last_exists)
+{
+ GString *report = NULL;
+ gchar *ret;
+
+ if (!pathname || !pathname [0])
+ return NULL;
+ ret = mono_portability_find_file_internal (&report, pathname, last_exists);
+
+ if (report)
+ g_string_free (report, TRUE);
+
+ return ret;
+}
+
+/* Returns newly-allocated string or NULL on failure */
+static inline gchar *mono_portability_find_file_internal (GString **report, const gchar *pathname, gboolean last_exists)
+{
+ gchar *new_pathname, **components, **new_components;
+ int num_components = 0, component = 0;
+ DIR *scanning = NULL;
+ size_t len;
+ gboolean drive_stripped = FALSE;
+ gboolean do_report = (mono_profiler_get_events () & MONO_PROFILE_IOMAP_EVENTS) != 0;
+
+ if (IS_PORTABILITY_NONE) {
+ return(NULL);
+ }
+
+ if (do_report)
+ append_report (report, " - Requested file path: '%s'\n", pathname);
+
+ new_pathname = g_strdup (pathname);
+
+#ifdef DEBUG
+ g_message ("%s: Finding [%s] last_exists: %s\n", __func__, pathname,
+ last_exists?"TRUE":"FALSE");
+#endif
+
+ if (last_exists &&
+ access (new_pathname, F_OK) == 0) {
+#ifdef DEBUG
+ g_message ("%s: Found it without doing anything\n", __func__);
+#endif
+ return(new_pathname);
+ }
+
+ /* First turn '\' into '/' and strip any drive letters */
+ g_strdelimit (new_pathname, "\\", '/');
+
+#ifdef DEBUG
+ g_message ("%s: Fixed slashes, now have [%s]\n", __func__,
+ new_pathname);
+#endif
+
+ if (IS_PORTABILITY_DRIVE &&
+ g_ascii_isalpha (new_pathname[0]) &&
+ (new_pathname[1] == ':')) {
+ int len = strlen (new_pathname);
+
+ g_memmove (new_pathname, new_pathname+2, len - 2);
+ new_pathname[len - 2] = '\0';
+
+ if (do_report) {
+ append_report (report, " - Stripped drive letter.\n");
+ drive_stripped = TRUE;
+ }
+#ifdef DEBUG
+ g_message ("%s: Stripped drive letter, now looking for [%s]\n",
+ __func__, new_pathname);
+#endif
+ }
+
+ len = strlen (new_pathname);
+ if (len > 1 && new_pathname [len - 1] == '/') {
+ new_pathname [len - 1] = 0;
+#ifdef DEBUG
+ g_message ("%s: requested name had a trailing /, rewritten to '%s'\n",
+ __func__, new_pathname);
+#endif
+ }
+
+ if (last_exists &&
+ access (new_pathname, F_OK) == 0) {
+#ifdef DEBUG
+ g_message ("%s: Found it\n", __func__);
+#endif
+ if (do_report && drive_stripped)
+ do_mono_profiler_iomap (report, pathname, new_pathname);
+
+ return(new_pathname);
+ }
+
+ /* OK, have to work harder. Take each path component in turn
+ * and do a case-insensitive directory scan for it
+ */
+
+ if (!(IS_PORTABILITY_CASE)) {
+ g_free (new_pathname);
+ return(NULL);
+ }
+
+ components = g_strsplit (new_pathname, "/", 0);
+ if (components == NULL) {
+ /* This shouldn't happen */
+ g_free (new_pathname);
+ return(NULL);
+ }
+
+ while(components[num_components] != NULL) {
+ num_components++;
+ }
+ g_free (new_pathname);
+
+ if (num_components == 0){
+ return NULL;
+ }
+
+
+ new_components = (gchar **)g_new0 (gchar **, num_components + 1);
+
+ if (num_components > 1) {
+ if (strcmp (components[0], "") == 0) {
+ /* first component blank, so start at / */
+ scanning = opendir ("/");
+ if (scanning == NULL) {
+#ifdef DEBUG
+ g_message ("%s: opendir 1 error: %s", __func__,
+ g_strerror (errno));
+#endif
+ g_strfreev (new_components);
+ g_strfreev (components);
+ return(NULL);
+ }
+
+ new_components[component++] = g_strdup ("");
+ } else {
+ DIR *current;
+ gchar *entry;
+
+ current = opendir (".");
+ if (current == NULL) {
+#ifdef DEBUG
+ g_message ("%s: opendir 2 error: %s", __func__,
+ g_strerror (errno));
+#endif
+ g_strfreev (new_components);
+ g_strfreev (components);
+ return(NULL);
+ }
+
+ entry = find_in_dir (current, components[0]);
+ if (entry == NULL) {
+ g_strfreev (new_components);
+ g_strfreev (components);
+ return(NULL);
+ }
+
+ scanning = opendir (entry);
+ if (scanning == NULL) {
+#ifdef DEBUG
+ g_message ("%s: opendir 3 error: %s", __func__,
+ g_strerror (errno));
+#endif
+ g_free (entry);
+ g_strfreev (new_components);
+ g_strfreev (components);
+ return(NULL);
+ }
+
+ new_components[component++] = entry;
+ }
+ } else {
+ if (last_exists) {
+ if (strcmp (components[0], "") == 0) {
+ /* First and only component blank */
+ new_components[component++] = g_strdup ("");
+ } else {
+ DIR *current;
+ gchar *entry;
+
+ current = opendir (".");
+ if (current == NULL) {
+#ifdef DEBUG
+ g_message ("%s: opendir 4 error: %s",
+ __func__,
+ g_strerror (errno));
+#endif
+ g_strfreev (new_components);
+ g_strfreev (components);
+ return(NULL);
+ }
+
+ entry = find_in_dir (current, components[0]);
+ if (entry == NULL) {
+ g_strfreev (new_components);
+ g_strfreev (components);
+ return(NULL);
+ }
+
+ new_components[component++] = entry;
+ }
+ } else {
+ new_components[component++] = g_strdup (components[0]);
+ }
+ }
+
+#ifdef DEBUG
+ g_message ("%s: Got first entry: [%s]\n", __func__, new_components[0]);
+#endif
+
+ g_assert (component == 1);
+
+ for(; component < num_components; component++) {
+ gchar *entry;
+ gchar *path_so_far;
+
+ if (!last_exists &&
+ component == num_components -1) {
+ entry = g_strdup (components[component]);
+ closedir (scanning);
+ } else {
+ entry = find_in_dir (scanning, components[component]);
+ if (entry == NULL) {
+ g_strfreev (new_components);
+ g_strfreev (components);
+ return(NULL);
+ }
+ }
+
+ new_components[component] = entry;
+
+ if (component < num_components -1) {
+ path_so_far = g_strjoinv ("/", new_components);
+
+ scanning = opendir (path_so_far);
+ g_free (path_so_far);
+ if (scanning == NULL) {
+ g_strfreev (new_components);
+ g_strfreev (components);
+ return(NULL);
+ }
+ }
+ }
+
+ g_strfreev (components);
+
+ new_pathname = g_strjoinv ("/", new_components);
+
+#ifdef DEBUG
+ g_message ("%s: pathname [%s] became [%s]\n", __func__, pathname,
+ new_pathname);
+#endif
+
+ g_strfreev (new_components);
+
+ if ((last_exists &&
+ access (new_pathname, F_OK) == 0) ||
+ (!last_exists)) {
+ if (do_report && strcmp (pathname, new_pathname) != 0)
+ do_mono_profiler_iomap (report, pathname, new_pathname);
+
+ return(new_pathname);
+ }
+
+ g_free (new_pathname);
+ return(NULL);
}
+#endif
projects / mono.git / blobdiff