auto import from //branches/cupcake/...@127101

1 files changed, 121 insertions, 0 deletions

diff --git a/vold/ums.c b/vold/ums.c
new file mode 100644
index 0000000..a6468fc
--- /dev/null
+++ b/vold/ums.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 <fcntl.h>
+#include <errno.h>
+
+#include "vold.h"
+#include "ums.h"
+
+static boolean host_connected = false;
+static boolean ums_enabled = false;
+
+int ums_bootstrap(void)
+{
+    return 0;
+}
+
+void ums_enabled_set(boolean enabled)
+{
+    ums_enabled = enabled;
+    send_msg(enabled ? VOLD_EVT_UMS_ENABLED : VOLD_EVT_UMS_DISABLED);
+}
+
+boolean ums_enabled_get()
+{
+    return ums_enabled;
+}
+
+void ums_hostconnected_set(boolean connected)
+{
+    LOG_VOL("ums_hostconnected_set(%d):\n", connected);
+    host_connected = connected;
+
+    if (!connected)
+        ums_enabled_set(false);
+    send_msg(connected ? VOLD_EVT_UMS_CONNECTED : VOLD_EVT_UMS_DISCONNECTED);
+}
+
+int ums_enable(char *dev_fspath, char *lun_syspath)
+{
+    LOG_VOL("ums_enable(%s, %s):\n", dev_fspath, lun_syspath);
+
+    int fd;
+    char filename[255];
+
+    sprintf(filename, "/sys/%s/file", lun_syspath);
+    if ((fd = open(filename, O_WRONLY)) < 0) {
+        LOGE("Unable to open '%s' (%s)\n", filename, strerror(errno));
+        return -errno;
+    }
+
+    if (write(fd, dev_fspath, strlen(dev_fspath)) < 0) {
+        LOGE("Unable to write to ums lunfile (%s)\n", strerror(errno));
+        close(fd);
+        return -errno;
+    }
+    
+    close(fd);
+    return 0;
+}
+
+int ums_disable(char *lun_syspath)
+{
+    LOG_VOL("ums_disable(%s):\n", lun_syspath);
+
+    int fd;
+    char filename[255];
+
+    sprintf(filename, "/sys/%s/file", lun_syspath);
+    if ((fd = open(filename, O_WRONLY)) < 0) {
+        LOGE("Unable to open '%s' (%s)\n", filename, strerror(errno));
+        return -errno;
+    }
+
+    char ch = 0;
+
+    if (write(fd, &ch, 1) < 0) {
+        LOGE("Unable to write to ums lunfile (%s)\n", strerror(errno));
+        close(fd);
+        return -errno;
+    }
+    
+    close(fd);
+    return 0;
+}
+
+boolean ums_hostconnected_get(void)
+{
+    return host_connected;
+}
+
+int ums_send_status(void)
+{
+    int rc;
+
+    LOG_VOL("ums_send_status():\n");
+
+    rc = send_msg(ums_enabled_get() ? VOLD_EVT_UMS_ENABLED :
+                                      VOLD_EVT_UMS_DISABLED);
+    if (rc < 0)
+        return rc;
+
+    rc = send_msg(ums_hostconnected_get() ? VOLD_EVT_UMS_CONNECTED :
+                                            VOLD_EVT_UMS_DISCONNECTED);
+
+    return rc;
+}