+ int bufpos;
+ int i;
+ struct uevent_msg *msg;
+ int major = 0;
+ int minor = 0;
+
+ msg = malloc(sizeof(struct uevent_msg) + buf_size);
+ if (msg == NULL)
+ return NULL;
+ memset(msg, 0x00, sizeof(struct uevent_msg) + buf_size);
+
+ /* copy environment buffer and reconstruct envp */
+ memcpy(msg->envbuf, buf, buf_size);
+ bufpos = 0;
+ for (i = 0; (bufpos < buf_size) && (i < UEVENT_NUM_ENVP-2); i++) {
+ int keylen;
+ char *key;
+
+ key = &msg->envbuf[bufpos];
+ keylen = strlen(key);
+ msg->envp[i] = key;
+ bufpos += keylen + 1;
+ dbg("add '%s' to msg.envp[%i]", msg->envp[i], i);
+
+ /* remember some keys for further processing */
+ if (strncmp(key, "ACTION=", 7) == 0)
+ msg->action = &key[7];
+ else if (strncmp(key, "DEVPATH=", 8) == 0)
+ msg->devpath = &key[8];
+ else if (strncmp(key, "SUBSYSTEM=", 10) == 0)
+ msg->subsystem = &key[10];
+ else if (strncmp(key, "SEQNUM=", 7) == 0)
+ msg->seqnum = strtoull(&key[7], NULL, 10);
+ else if (strncmp(key, "PHYSDEVPATH=", 12) == 0)
+ msg->physdevpath = &key[12];
+ else if (strncmp(key, "MAJOR=", 6) == 0)
+ major = strtoull(&key[6], NULL, 10);
+ else if (strncmp(key, "MINOR=", 6) == 0)
+ minor = strtoull(&key[6], NULL, 10);
+ else if (strncmp(key, "TIMEOUT=", 8) == 0)
+ msg->timeout = strtoull(&key[8], NULL, 10);
+ }
+ msg->devt = makedev(major, minor);
+ msg->envp[i++] = "UDEVD_EVENT=1";
+ msg->envp[i] = NULL;
+
+ return msg;
+}
+
+/* receive the udevd message from userspace */
+static struct uevent_msg *get_udevd_msg(void)
+{
+ static struct udevd_msg usend_msg;
+ struct uevent_msg *msg;
+ ssize_t size;