[PATCH] fix up 'make release' to use bk to build the export tree.

[elogind.git] / udevsend.c

diff --git a/udevsend.c b/udevsend.c
index a24e7d75ed47baedf863ad893225a7c69f7bc036..b26c7444224ae6330faaa73e488c76906456b613 100644 (file)
--- a/udevsend.c
+++ b/udevsend.c
@@ -119,7 +119,7 @@ static int start_daemon(void)
 
 int main(int argc, char* argv[])
 {
-       struct hotplug_msg message;
+       struct hotplug_msg msg;
        char *action;
        char *devpath;
        char *subsystem;
@@ -133,6 +133,13 @@ int main(int argc, char* argv[])
        struct sockaddr_un saddr;
        socklen_t addrlen;
        int started_daemon = 0;
+       struct iovec iov;
+       struct msghdr smsg;
+       char cred_msg[CMSG_SPACE(sizeof(struct ucred))];
+       struct cmsghdr *cmsg;
+       struct ucred *cred;
+       
+
 
 #ifdef DEBUG
        init_logging("udevsend");
@@ -174,12 +181,34 @@ int main(int argc, char* argv[])
        strcpy(&saddr.sun_path[1], UDEVD_SOCK_PATH);
        addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(saddr.sun_path+1) + 1;
 
-       size = build_hotplugmsg(&message, action, devpath, subsystem, seq);
-       
+       size = build_hotplugmsg(&msg, action, devpath, subsystem, seq);
+
+       /* prepare message with credentials to authenticate ourself */
+       iov.iov_base = &msg;
+       iov.iov_len = size;
+
+       smsg.msg_name = &saddr;
+       smsg.msg_namelen = addrlen;
+       smsg.msg_iov = &iov;
+       smsg.msg_iovlen = 1;
+       smsg.msg_control = cred_msg;
+       smsg.msg_controllen = CMSG_LEN(sizeof(struct ucred));;
+       smsg.msg_flags = 0;
+
+       cmsg = CMSG_FIRSTHDR(&smsg);
+       cmsg->cmsg_level = SOL_SOCKET;
+       cmsg->cmsg_type = SCM_CREDENTIALS;
+       cmsg->cmsg_len = sizeof(cred_msg);
+       cred = (struct ucred *) CMSG_DATA(cmsg);
+       cred->uid = getuid();
+       cred->gid = getgid();
+       cred->pid = getpid();
+       cred->pid = getpid();
+
        /* If we can't send, try to start daemon and resend message */
        loop = UDEVSEND_CONNECT_RETRY;
        while (loop--) {
-               retval = sendto(sock, &message, size, 0, (struct sockaddr *)&saddr, addrlen);
+               retval = sendmsg(sock, &smsg, 0);
                if (retval != -1) {
                        retval = 0;
                        goto close_and_exit;