auto import from //depot/cupcake/@135843
diff --git a/vold/switch.c b/vold/switch.c
new file mode 100644
index 0000000..ba9ddb3
--- /dev/null
+++ b/vold/switch.c
@@ -0,0 +1,121 @@
+
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <errno.h>
+
+#include <sys/types.h>
+
+#include "vold.h"
+#include "switch.h"
+
+#define DEBUG_BOOTSTRAP 0
+
+static int mmc_bootstrap_switch(char *sysfs_path);
+
+int switch_bootstrap()
+{
+ DIR *d;
+ struct dirent *de;
+
+ if (!(d = opendir(SYSFS_CLASS_SWITCH_PATH))) {
+ LOG_ERROR("Unable to open '%s' (%m)", SYSFS_CLASS_SWITCH_PATH);
+ return -errno;
+ }
+
+ while ((de = readdir(d))) {
+ char tmp[255];
+
+ if (de->d_name[0] == '.')
+ continue;
+
+ sprintf(tmp, "%s/%s", SYSFS_CLASS_SWITCH_PATH, de->d_name);
+ if (mmc_bootstrap_switch(tmp))
+ LOG_ERROR("Error bootstrapping switch '%s' (%m)", tmp);
+ }
+
+ closedir(d);
+
+ return 0;
+}
+
+static int mmc_bootstrap_switch(char *sysfs_path)
+{
+#if DEBUG_BOOTSTRAP
+ LOG_VOL("bootstrap_switch(%s):", sysfs_path);
+#endif
+
+ char filename[255];
+ char name[255];
+ char state[255];
+ char tmp[255];
+ char *uevent_params[3];
+ char devpath[255];
+ FILE *fp;
+
+ /*
+ * Read switch name
+ */
+ sprintf(filename, "%s/name", sysfs_path);
+ if (!(fp = fopen(filename, "r"))) {
+ LOGE("Error opening switch name path '%s' (%s)",
+ sysfs_path, strerror(errno));
+ return -errno;
+ }
+ if (!fgets(name, sizeof(name), fp)) {
+ LOGE("Unable to read switch name");
+ fclose(fp);
+ return -EIO;
+ }
+ fclose(fp);
+
+ name[strlen(name) -1] = '\0';
+ sprintf(devpath, "/devices/virtual/switch/%s", name);
+ sprintf(tmp, "SWITCH_NAME=%s", name);
+ uevent_params[0] = (char *) strdup(tmp);
+
+ /*
+ * Read switch state
+ */
+ sprintf(filename, "%s/state", sysfs_path);
+ if (!(fp = fopen(filename, "r"))) {
+ LOGE("Error opening switch state path '%s' (%s)",
+ sysfs_path, strerror(errno));
+ return -errno;
+ }
+ if (!fgets(state, sizeof(state), fp)) {
+ LOGE("Unable to read switch state");
+ fclose(fp);
+ return -EIO;
+ }
+ fclose(fp);
+
+ state[strlen(state) -1] = '\0';
+ sprintf(tmp, "SWITCH_STATE=%s", state);
+ uevent_params[1] = (char *) strdup(tmp);
+
+ uevent_params[2] = (char *) NULL;
+
+ if (simulate_uevent("switch", devpath, "add", uevent_params) < 0) {
+ LOGE("Error simulating uevent (%s)", strerror(errno));
+ return -errno;
+ }
+
+ return 0;
+}