auto import from //branches/cupcake/...@126645

3 files changed, 118 insertions, 0 deletions

diff --git a/uevent/Android.mk b/uevent/Android.mk
new file mode 100644
index 0000000..74ccdbc
--- /dev/null
+++ b/uevent/Android.mk
@@ -0,0 +1,7 @@
+# Copyright 2008 The Android Open Source Project
+
+ifeq ($(TARGET_SIMULATOR),true)
+LOCAL_SRC_FILES += uevent/uevent_stub.c
+else
+LOCAL_SRC_FILES += uevent/uevent.c
+endif
diff --git a/uevent/uevent.c b/uevent/uevent.c
new file mode 100644
index 0000000..d1d4b8e
--- /dev/null
+++ b/uevent/uevent.c
@@ -0,0 +1,78 @@
+/*
+ * 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 <hardware_legacy/uevent.h>
+
+#include <string.h>
+#include <unistd.h>
+#include <poll.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <linux/netlink.h>
+
+
+static int fd = -1;
+
+/* Returns 0 on failure, 1 on success */
+int uevent_init()
+{
+    struct sockaddr_nl addr;
+    int sz = 64*1024;
+    int s;
+
+    memset(&addr, 0, sizeof(addr));
+    addr.nl_family = AF_NETLINK;
+    addr.nl_pid = getpid();
+    addr.nl_groups = 0xffffffff;
+
+    s = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT);
+    if(s < 0)
+        return 0;
+
+    setsockopt(s, SOL_SOCKET, SO_RCVBUFFORCE, &sz, sizeof(sz));
+
+    if(bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+        close(s);
+        return 0;
+    }
+
+    fd = s;
+    return (fd > 0);
+}
+
+int uevent_next_event(char* buffer, int buffer_length)
+{
+    while (1) {
+        struct pollfd fds;
+        int nr;
+    
+        fds.fd = fd;
+        fds.events = POLLIN;
+        fds.revents = 0;
+        nr = poll(&fds, 1, -1);
+     
+        if(nr > 0 && fds.revents == POLLIN) {
+            int count = recv(fd, buffer, buffer_length, 0);
+            if (count > 0) {
+                return count;
+            } 
+        }
+    }
+    
+    // won't get here
+    return 0;
+}
diff --git a/uevent/uevent_stub.c b/uevent/uevent_stub.c
new file mode 100644
index 0000000..2f28ab4
--- /dev/null
+++ b/uevent/uevent_stub.c
@@ -0,0 +1,33 @@
+/*
+ * 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 <hardware_legacy/uevent.h>
+#include <unistd.h>
+
+int uevent_init()
+{
+    return 1;
+}
+
+int uevent_next_event(char* buffer, int buffer_length)
+{
+    while (1) {
+        sleep(10000);
+    }
+    
+    // won't get here
+    return 0;
+}