shared: introduce cmsg_close_all() call

[elogind.git] / src / udev / udev-ctrl.c

diff --git a/src/udev/udev-ctrl.c b/src/udev/udev-ctrl.c
index 98fd3a9acfcfdae6c8960409c6d48483a710b25c..59a3eceaadea7cc2959f4c8a52b7d87b3bec774e 100644 (file)
--- a/src/udev/udev-ctrl.c
+++ b/src/udev/udev-ctrl.c
@@ -16,7 +16,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/types.h>
-#include <sys/poll.h>
+#include <poll.h>
 #include <sys/socket.h>
 #include <sys/un.h>
 
@@ -84,7 +84,7 @@ struct udev_ctrl *udev_ctrl_new_from_fd(struct udev *udev, int fd) {
         if (fd < 0) {
                 uctrl->sock = socket(AF_LOCAL, SOCK_SEQPACKET|SOCK_NONBLOCK|SOCK_CLOEXEC, 0);
                 if (uctrl->sock < 0) {
-                        log_error("error getting socket: %m");
+                        log_error_errno(errno, "error getting socket: %m");
                         udev_ctrl_unref(uctrl);
                         return NULL;
                 }
@@ -94,7 +94,7 @@ struct udev_ctrl *udev_ctrl_new_from_fd(struct udev *udev, int fd) {
         }
         r = setsockopt(uctrl->sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on));
         if (r < 0)
-                log_warning("could not set SO_PASSCRED: %m");
+                log_warning_errno(errno, "could not set SO_PASSCRED: %m");
 
         uctrl->saddr.sun_family = AF_LOCAL;
         strscpy(uctrl->saddr.sun_path, sizeof(uctrl->saddr.sun_path), "/run/udev/control");
@@ -118,14 +118,14 @@ int udev_ctrl_enable_receiving(struct udev_ctrl *uctrl) {
 
                 if (err < 0) {
                         err = -errno;
-                        log_error("bind failed: %m");
+                        log_error_errno(errno, "bind failed: %m");
                         return err;
                 }
 
                 err = listen(uctrl->sock, 0);
                 if (err < 0) {
                         err = -errno;
-                        log_error("listen failed: %m");
+                        log_error_errno(errno, "listen failed: %m");
                         return err;
                 }
 
@@ -187,25 +187,25 @@ struct udev_ctrl_connection *udev_ctrl_get_connection(struct udev_ctrl *uctrl) {
         conn->sock = accept4(uctrl->sock, NULL, NULL, SOCK_CLOEXEC|SOCK_NONBLOCK);
         if (conn->sock < 0) {
                 if (errno != EINTR)
-                        log_error("unable to receive ctrl connection: %m");
+                        log_error_errno(errno, "unable to receive ctrl connection: %m");
                 goto err;
         }
 
         /* check peer credential of connection */
         r = getpeercred(conn->sock, &ucred);
         if (r < 0) {
-                log_error("unable to receive credentials of ctrl connection: %s", strerror(-r));
+                log_error_errno(r, "unable to receive credentials of ctrl connection: %m");
                 goto err;
         }
         if (ucred.uid > 0) {
-                log_error("sender uid=%i, message ignored", ucred.uid);
+                log_error("sender uid="UID_FMT", message ignored", ucred.uid);
                 goto err;
         }
 
         /* enable receiving of the sender credentials in the messages */
         r = setsockopt(conn->sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on));
         if (r < 0)
-                log_warning("could not set SO_PASSCRED: %m");
+                log_warning_errno(errno, "could not set SO_PASSCRED: %m");
 
         udev_ctrl_ref(uctrl);
         return conn;
@@ -361,7 +361,7 @@ struct udev_ctrl_msg *udev_ctrl_receive_msg(struct udev_ctrl_connection *conn) {
                         goto err;
                 } else {
                         if (!(pfd[0].revents & POLLIN)) {
-                                log_error("ctrl connection error: %m");
+                                log_error_errno(errno, "ctrl connection error: %m");
                                 goto err;
                         }
                 }
@@ -374,9 +374,12 @@ struct udev_ctrl_msg *udev_ctrl_receive_msg(struct udev_ctrl_connection *conn) {
 
         size = recvmsg(conn->sock, &smsg, 0);
         if (size <  0) {
-                log_error("unable to receive ctrl message: %m");
+                log_error_errno(errno, "unable to receive ctrl message: %m");
                 goto err;
         }
+
+        cmsg_close_all(&smsg);
+
         cmsg = CMSG_FIRSTHDR(&smsg);
         cred = (struct ucred *) CMSG_DATA(cmsg);
 
@@ -386,7 +389,7 @@ struct udev_ctrl_msg *udev_ctrl_receive_msg(struct udev_ctrl_connection *conn) {
         }
 
         if (cred->uid != 0) {
-                log_error("sender uid=%i, message ignored", cred->uid);
+                log_error("sender uid="UID_FMT", message ignored", cred->uid);
                 goto err;
         }