X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshutdownd%2Fshutdownd.c;h=6e4511ecea718e7a97a274e8039210891ffe12c5;hb=adfe5671ef794099068038dfccbf1eb5134433c8;hp=701882b96d58da442077c825babb3d63e1c031ad;hpb=0a6f50c0afdfc434b492493bd9efab20cbee8623;p=elogind.git

diff --git a/src/shutdownd/shutdownd.c b/src/shutdownd/shutdownd.c
index 701882b96..6e4511ece 100644
--- a/src/shutdownd/shutdownd.c
+++ b/src/shutdownd/shutdownd.c
@@ -21,13 +21,9 @@
 
 #include <sys/socket.h>
 #include <poll.h>
-#include <sys/types.h>
 #include <sys/timerfd.h>
-#include <assert.h>
-#include <string.h>
 #include <errno.h>
 #include <unistd.h>
-#include <fcntl.h>
 #include <stddef.h>
 
 #include "systemd/sd-daemon.h"
@@ -70,12 +66,7 @@ static int read_packet(int fd, union shutdown_buffer *_b) {
         assert(_b);
 
         n = recvmsg(fd, &msghdr, MSG_DONTWAIT);
-        if (n <= 0) {
-                if (n == 0) {
-                        log_error("Short read");
-                        return -EIO;
-                }
-
+        if (n < 0) {
                 if (errno == EAGAIN || errno == EINTR)
                         return 0;
 
@@ -83,6 +74,13 @@ static int read_packet(int fd, union shutdown_buffer *_b) {
                 return -errno;
         }
 
+        cmsg_close_all(&msghdr);
+
+        if (n == 0) {
+                log_error("Short read");
+                return -EIO;
+        }
+
         if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
             control.cmsghdr.cmsg_level != SOL_SOCKET ||
             control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||