tree-wide: port everything over to fflush_and_check()

Some places invoked fflush() directly with their own manual error
checking, let's unify all that by using fflush_and_check().

This also unifies the general error paths of fflush()+rename() file
writers.

1 files changed, 14 insertions, 9 deletions

diff --git a/src/journal-remote/journal-upload.c b/src/journal-remote/journal-upload.c
index 5d23639ee8..172fd80a12 100644
--- a/src/journal-remote/journal-upload.c
+++ b/src/journal-remote/journal-upload.c
@@ -126,26 +126,31 @@ static int update_cursor_state(Uploader *u) {
 
         r = fopen_temporary(u->state_file, &f, &temp_path);
         if (r < 0)
-                goto finish;
+                goto fail;
 
         fprintf(f,
                 "# This is private data. Do not parse.\n"
                 "LAST_CURSOR=%s\n",
                 u->last_cursor);
 
-        fflush(f);
+        r = fflush_and_check(f);
+        if (r < 0)
+                goto fail;
 
-        if (ferror(f) || rename(temp_path, u->state_file) < 0) {
+        if (rename(temp_path, u->state_file) < 0) {
                 r = -errno;
-                unlink(u->state_file);
-                unlink(temp_path);
+                goto fail;
         }
 
-finish:
-        if (r < 0)
-                log_error_errno(r, "Failed to save state %s: %m", u->state_file);
+        return 0;
 
-        return r;
+fail:
+        if (temp_path)
+                (void) unlink(temp_path);
+
+        (void) unlink(u->state_file);
+
+        return log_error_errno(r, "Failed to save state %s: %m", u->state_file);
 }
 
 static int load_cursor_state(Uploader *u) {