From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 4 Sep 2020 21:52:39 +0000 (+0200)
Subject: ptyfwd: don't set prio if event source that might not exist
X-Git-Tag: v247-rc1~294^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1ba37106b36b7804054d88fa51ee28641f64037f;p=thirdparty%2Fsystemd.git

ptyfwd: don't set prio if event source that might not exist

We support read-only ptyfwd options, and on those the input event source
won't be allocated. Deal with that and don't invoke a function on it
that will then instantly fail.
---

diff --git a/src/shared/ptyfwd.c b/src/shared/ptyfwd.c
index fe17b3781aa..6d67c079e4b 100644
--- a/src/shared/ptyfwd.c
+++ b/src/shared/ptyfwd.c
@@ -572,9 +572,11 @@ int pty_forward_set_priority(PTYForward *f, int64_t priority) {
         int r;
         assert(f);
 
-        r = sd_event_source_set_priority(f->stdin_event_source, priority);
-        if (r < 0)
-                return r;
+        if (f->stdin_event_source) {
+                r = sd_event_source_set_priority(f->stdin_event_source, priority);
+                if (r < 0)
+                        return r;
+        }
 
         r = sd_event_source_set_priority(f->stdout_event_source, priority);
         if (r < 0)