+ exit(EXIT_SUCCESS);
+}
+
+static void
+clean_swap_directory(const char *path)
+{
+ DIR *dir;
+ struct dirent *entry;
+ char buf[1024];
+
+ dir = opendir(path);
+ if (dir == NULL) {
+ fprintf(stderr,"dynamic_pager: cannot open swap directory %s\n", path);
+ exit(EXIT_FAILURE);
+ }
+
+ while ((entry = readdir(dir)) != NULL) {
+ if (entry->d_namlen>= 4 && strncmp(entry->d_name, "swap", 4) == 0) {
+ snprintf(buf, sizeof buf, "%s/%s", path, entry->d_name);
+ unlink(buf);
+ }
+ }
+
+ closedir(dir);
+}
+
+#define VM_PREFS_PLIST "/Library/Preferences/com.apple.virtualMemory.plist"
+#define VM_PREFS_DISABLE_ENCRYPT_SWAP_KEY "DisableEncryptedSwap"
+
+static boolean_t
+should_encrypt_swap(void)
+{
+ CFPropertyListRef propertyList;
+ CFTypeID propertyListType;
+ CFStringRef errorString;
+ CFDataRef resourceData;
+ SInt32 errorCode;
+ CFURLRef fileURL;
+ CFTypeRef disable_encrypted_swap;
+ boolean_t should_encrypt = TRUE;
+ boolean_t explicit_value = FALSE;
+
+ fileURL = CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault, (const UInt8 *)VM_PREFS_PLIST, strlen(VM_PREFS_PLIST), false);
+ if (fileURL == NULL) {
+ /*fprintf(stderr, "%s: CFURLCreateFromFileSystemRepresentation(%s) failed\n", getprogname(), VM_PREFS_PLIST);*/
+ goto done;
+ }
+
+ if (!CFURLCreateDataAndPropertiesFromResource(kCFAllocatorDefault, fileURL, &resourceData, NULL, NULL, &errorCode)) {
+ /*fprintf(stderr, "%s: CFURLCreateDataAndPropertiesFromResource(%s) failed: %d\n", getprogname(), VM_PREFS_PLIST, (int)errorCode);*/
+ CFRelease(fileURL);
+ goto done;
+ }
+
+ CFRelease(fileURL);
+ propertyList = CFPropertyListCreateFromXMLData(kCFAllocatorDefault, resourceData, kCFPropertyListMutableContainers, &errorString);
+ if (propertyList == NULL) {
+ /*fprintf(stderr, "%s: cannot get XML propertyList %s\n", getprogname(), VM_PREFS_PLIST);*/
+ CFRelease(resourceData);
+ goto done;
+ }
+
+ propertyListType = CFGetTypeID(propertyList);
+
+ if (propertyListType == CFDictionaryGetTypeID()) {
+ disable_encrypted_swap = (CFTypeRef) CFDictionaryGetValue((CFDictionaryRef) propertyList, CFSTR(VM_PREFS_DISABLE_ENCRYPT_SWAP_KEY));
+ if (disable_encrypted_swap == NULL) {
+ /* no value: use the default value i.e. encrypted swap ON */
+ } else if (CFGetTypeID(disable_encrypted_swap) != CFBooleanGetTypeID()) {
+ fprintf(stderr, "%s: wrong type for key \"%s\"\n",
+ getprogname(), VM_PREFS_DISABLE_ENCRYPT_SWAP_KEY);
+ /* bogus value, assume it's "true" for safety's sake */
+ should_encrypt = TRUE;
+ explicit_value = TRUE;
+ } else {
+ should_encrypt = CFBooleanGetValue((CFBooleanRef)disable_encrypted_swap) ? FALSE : TRUE;
+ explicit_value = TRUE;
+ }
+ }
+ else {
+ /*fprintf(stderr, "%s: invalid propertyList type %d (not a dictionary)\n", getprogname(), propertyListType);*/
+ }
+ CFRelease(resourceData);
+ CFRelease(propertyList);
+
+done:
+ if (! explicit_value) {
+#if TARGET_OS_EMBEDDED
+ should_encrypt = FALSE;
+#endif
+ }
+
+ return should_encrypt;
projects / apple / system_cmds.git / blobdiff