diff options
Diffstat (limited to 'udevsend.c')
| -rw-r--r-- | udevsend.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/udevsend.c b/udevsend.c index a24e7d75ed..b26c744422 100644 --- 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; |