Add uevent tool to dump uevent events
Change-Id: Ia3f9453f6d0e105c99ad420b66d94908b93d1fa7
diff --git a/cmds/uevent.cpp b/cmds/uevent.cpp
new file mode 100644
index 0000000..e2d8ee1
--- /dev/null
+++ b/cmds/uevent.cpp
@@ -0,0 +1,57 @@
+typedef unsigned short int sa_family_t;
+#define __KERNEL_STRICT_NAMES
+#include <sys/types.h>
+#include <linux/netlink.h>
+#include <sys/socket.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+//From a uevent patch for hal
+#define HOTPLUG_BUFFER_SIZE 1024
+#define HOTPLUG_NUM_ENVP 32
+#define OBJECT_SIZE 512
+
+#ifndef NETLINK_KOBJECT_UEVENT
+#error Your kernel headers are too old, and do not define NETLINK_KOBJECT_UEVENT. You need Linux 2.6.10 or higher for KOBJECT_UEVENT support.
+#endif
+
+int main(int argc, char **argv, char **envp) {
+ //Start listening
+ int fd;
+ struct sockaddr_nl ksnl;
+ memset(&ksnl, 0x00, sizeof(struct sockaddr_nl));
+ ksnl.nl_family=AF_NETLINK;
+ ksnl.nl_pid=getpid();
+ ksnl.nl_groups=0xffffffff;
+ fd=socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT);
+ if (fd==-1) {
+ printf("Couldn't open kobject-uevent netlink socket");
+ perror("");
+ exit(1);
+ }
+ if (bind(fd, (struct sockaddr *) &ksnl, sizeof(struct sockaddr_nl))<0) {
+ fprintf (stderr, "Error binding to netlink socket");
+ close(fd);
+ exit(1);
+ }
+
+ while(1) {
+ char buffer[HOTPLUG_BUFFER_SIZE + OBJECT_SIZE];
+ int buflen;
+ buflen=recv(fd, &buffer, sizeof(buffer), 0);
+ if (buflen<0) {
+ exit(1);
+ }
+ printf("%s\n", buffer);
+ char *pos = buffer + strlen(buffer);
+ char *end = buffer + buflen;
+ while(pos < end) {
+ int l = strlen(pos);
+ printf("\t%s\n", pos);
+ pos += l+1;
+ }
+ }
+
+}