Switch spawn_read to void and remove useless stores there.

The return value was never used and even if errors were found inside spawn_wait should still be called.

diff --git a/udev/udev-event.c b/udev/udev-event.c
index 1ea39967fc3476bed7c1874037e9a051617b5254..c978e847b7237fd9660ba41c3f632cece593c776 100644 (file)
--- a/udev/udev-event.c
+++ b/udev/udev-event.c
@@ -493,7 +493,7 @@ static int spawn_exec(struct udev_event *event,
        return err;
 }
 
-static int spawn_read(struct udev_event *event,
+static void spawn_read(struct udev_event *event,
                      const char *cmd,
                      int fd_stdout, int fd_stderr,
                      char *result, size_t ressize)
@@ -502,15 +502,13 @@ static int spawn_read(struct udev_event *event,
        size_t respos = 0;
        int fd_ep = -1;
        struct epoll_event ep_outpipe, ep_errpipe;
-       int err = 0;
 
        /* read from child if requested */
        if (fd_stdout < 0 && fd_stderr < 0)
-               return 0;
+               return;
 
        fd_ep = epoll_create1(EPOLL_CLOEXEC);
        if (fd_ep < 0) {
-               err = -errno;
                err(udev, "error creating epoll fd: %m\n");
                goto out;
        }
@@ -547,7 +545,6 @@ static int spawn_read(struct udev_event *event,
 
                        age_usec = now_usec() - event->birth_usec;
                        if (age_usec >= event->timeout_usec) {
-                               err = -ETIMEDOUT;
                                err(udev, "timeout '%s'\n", cmd);
                                goto out;
                        }
@@ -560,12 +557,10 @@ static int spawn_read(struct udev_event *event,
                if (fdcount < 0) {
                        if (errno == EINTR)
                                continue;
-                       err = -errno;
                        err(udev, "failed to poll: %m\n");
                        goto out;
                }
                if (fdcount == 0) {
-                       err  = -ETIMEDOUT;
                        err(udev, "timeout '%s'\n", cmd);
                        goto out;
                }
@@ -589,7 +584,6 @@ static int spawn_read(struct udev_event *event,
                                                respos += count;
                                        } else {
                                                err(udev, "'%s' ressize %zd too short\n", cmd, ressize);
-                                               err = -ENOBUFS;
                                        }
                                }
 
@@ -606,7 +600,6 @@ static int spawn_read(struct udev_event *event,
                                }
                        } else if (ev[i].events & EPOLLHUP) {
                                if (epoll_ctl(fd_ep, EPOLL_CTL_DEL, *fd, NULL) < 0) {
-                                       err = -errno;
                                        err(udev, "failed to remove fd from epoll: %m\n");
                                        goto out;
                                }
@@ -623,7 +616,6 @@ static int spawn_read(struct udev_event *event,
 out:
        if (fd_ep >= 0)
                close(fd_ep);
-       return err;
 }
 
 static int spawn_wait(struct udev_event *event, const char *cmd, pid_t pid)
@@ -805,9 +797,9 @@ int udev_event_spawn(struct udev_event *event,
                        errpipe[WRITE_END] = -1;
                }
 
-               err = spawn_read(event, cmd,
-                                outpipe[READ_END], errpipe[READ_END],
-                                result, ressize);
+               spawn_read(event, cmd,
+                        outpipe[READ_END], errpipe[READ_END],
+                        result, ressize);
 
                err = spawn_wait(event, cmd, pid);
        }