systemd/0002-core-remove-redundant-check-when-serializing-FDs.patch

From 2d042c75ffb71f59ebd4689c3972786c29b4bf51 Mon Sep 17 00:00:00 2001
From: Luca Boccassi <bluca@debian.org>
Date: Thu, 23 Nov 2023 19:14:45 +0000
Subject: [PATCH 2/3] core: remove redundant check when serializing FDs

The helpers already skip if the FD is < 0
---
 src/core/execute-serialize.c | 50 ++++++++++++++----------------------
 1 file changed, 19 insertions(+), 31 deletions(-)

diff --git a/src/core/execute-serialize.c b/src/core/execute-serialize.c
index 60c121a0d1..56c4f4da8a 100644
--- a/src/core/execute-serialize.c
+++ b/src/core/execute-serialize.c
@@ -1274,11 +1274,9 @@ static int exec_parameters_serialize(const ExecParameters *p, const ExecContext
                                 return r;
                 }
 
-                if (p->n_socket_fds + p->n_storage_fds > 0) {
-                        r = serialize_fd_many(f, fds, "exec-parameters-fds", p->fds, p->n_socket_fds + p->n_storage_fds);
-                        if (r < 0)
-                                return r;
-                }
+                r = serialize_fd_many(f, fds, "exec-parameters-fds", p->fds, p->n_socket_fds + p->n_storage_fds);
+                if (r < 0)
+                        return r;
         }
 
         r = serialize_strv(f, "exec-parameters-fd-names", p->fd_names);
@@ -1351,31 +1349,23 @@ static int exec_parameters_serialize(const ExecParameters *p, const ExecContext
                         return r;
         }
 
-        if (p->stdin_fd >= 0) {
-                r = serialize_fd(f, fds, "exec-parameters-stdin-fd", p->stdin_fd);
-                if (r < 0)
-                        return r;
-        }
+        r = serialize_fd(f, fds, "exec-parameters-stdin-fd", p->stdin_fd);
+        if (r < 0)
+                return r;
 
-        if (p->stdout_fd >= 0) {
-                r = serialize_fd(f, fds, "exec-parameters-stdout-fd", p->stdout_fd);
-                if (r < 0)
-                        return r;
-        }
+        r = serialize_fd(f, fds, "exec-parameters-stdout-fd", p->stdout_fd);
+        if (r < 0)
+                return r;
 
-        if (p->stderr_fd >= 0) {
-                r = serialize_fd(f, fds, "exec-parameters-stderr-fd", p->stderr_fd);
-                if (r < 0)
-                        return r;
-        }
+        r = serialize_fd(f, fds, "exec-parameters-stderr-fd", p->stderr_fd);
+        if (r < 0)
+                return r;
 
-        if (p->exec_fd >= 0) {
-                r = serialize_fd(f, fds, "exec-parameters-exec-fd", p->exec_fd);
-                if (r < 0)
-                        return r;
-        }
+        r = serialize_fd(f, fds, "exec-parameters-exec-fd", p->exec_fd);
+        if (r < 0)
+                return r;
 
-        if (c && exec_context_restrict_filesystems_set(c) && p->bpf_outer_map_fd >= 0) {
+        if (c && exec_context_restrict_filesystems_set(c)) {
                 r = serialize_fd(f, fds, "exec-parameters-bpf-outer-map-fd", p->bpf_outer_map_fd);
                 if (r < 0)
                         return r;
@@ -1401,11 +1391,9 @@ static int exec_parameters_serialize(const ExecParameters *p, const ExecContext
         if (r < 0)
                 return r;
 
-        if (p->user_lookup_fd >= 0) {
-                r = serialize_fd(f, fds, "exec-parameters-user-lookup-fd", p->user_lookup_fd);
-                if (r < 0)
-                        return r;
-        }
+        r = serialize_fd(f, fds, "exec-parameters-user-lookup-fd", p->user_lookup_fd);
+        if (r < 0)
+                return r;
 
         r = serialize_strv(f, "exec-parameters-files-env", p->files_env);
         if (r < 0)
-- 
2.43.0