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From 3b573e5c39f452f98084b3d36486369882455b72 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Sat, 7 Feb 2015 11:16:04 -0500
Subject: [PATCH] systemctl: check validity of PID we received
(cherry picked from commit d028e01814a405e83c400c60545785d35dba2a17)
---
src/systemctl/systemctl.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index 6b93ec8446..3da4d3d4f1 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -2881,6 +2881,9 @@ static int check_inhibitors(sd_bus *bus, enum action a) {
if (!sv)
return log_oom();
+ if ((pid_t) pid < 0)
+ return log_error_errno(ERANGE, "Bad PID %"PRIu32": %m", pid);
+
if (!strv_contains(sv,
a == ACTION_HALT ||
a == ACTION_POWEROFF ||
@@ -2892,7 +2895,7 @@ static int check_inhibitors(sd_bus *bus, enum action a) {
user = uid_to_name(uid);
log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".",
- who, pid, strna(comm), strna(user), why);
+ who, (pid_t) pid, strna(comm), strna(user), why);
c++;
}