systemd/SOURCES/0249-journal-rely-on-_cleanup_free_-to-free-a-temporary-s.patch
2021-09-10 05:03:39 +00:00

49 lines
1.9 KiB
Diff

From 4d2145e3edd6ba6ac2e52a232fa5059ecdacaead Mon Sep 17 00:00:00 2001
From: Evgeny Vereshchagin <evvers@ya.ru>
Date: Mon, 24 Dec 2018 00:29:56 +0100
Subject: [PATCH] journal: rely on _cleanup_free_ to free a temporary string
used in client_context_read_cgroup
Closes https://github.com/systemd/systemd/issues/11253.
(cherry picked from commit ef30f7cac18a810814ada7e6a68a31d48cc9fccd)
Resolves: #1764560
---
src/journal/journald-context.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/src/journal/journald-context.c b/src/journal/journald-context.c
index c8e97e16de..3a768094d9 100644
--- a/src/journal/journald-context.c
+++ b/src/journal/journald-context.c
@@ -282,7 +282,7 @@ static int client_context_read_label(
}
static int client_context_read_cgroup(Server *s, ClientContext *c, const char *unit_id) {
- char *t = NULL;
+ _cleanup_free_ char *t = NULL;
int r;
assert(c);
@@ -290,7 +290,6 @@ static int client_context_read_cgroup(Server *s, ClientContext *c, const char *u
/* Try to acquire the current cgroup path */
r = cg_pid_get_path_shifted(c->pid, s->cgroup_root, &t);
if (r < 0 || empty_or_root(t)) {
-
/* We use the unit ID passed in as fallback if we have nothing cached yet and cg_pid_get_path_shifted()
* failed or process is running in a root cgroup. Zombie processes are automatically migrated to root cgroup
* on cgroupsv1 and we want to be able to map log messages from them too. */
@@ -304,10 +303,8 @@ static int client_context_read_cgroup(Server *s, ClientContext *c, const char *u
}
/* Let's shortcut this if the cgroup path didn't change */
- if (streq_ptr(c->cgroup, t)) {
- free(t);
+ if (streq_ptr(c->cgroup, t))
return 0;
- }
free_and_replace(c->cgroup, t);