2 files changed, 12 insertions, 0 deletions
diff --git a/src/shared/util.c b/src/shared/util.c
index 2cf9fbe53e..f59897105a 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -6088,3 +6088,13 @@ int namespace_enter(int pidns_fd, int mntns_fd, int root_fd) {
 
         return 0;
 }
+
+bool pid_valid(pid_t pid) {
+        if (pid <= 0)
+                return false;
+
+        if (kill(pid, 0) >= 0)
+                return true;
+
+        return errno != ESRCH;
+}
diff --git a/src/shared/util.h b/src/shared/util.h
index ddb35181ab..3e0a6d5c1c 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -804,3 +804,5 @@ int container_get_leader(const char *machine, pid_t *pid);
 
 int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *root_fd);
 int namespace_enter(int pidns_fd, int mntns_fd, int root_fd);
+
+bool pid_valid(pid_t pid);