From 11578c623c3208cf79c1d03f63f38a482a2a207f Mon Sep 17 00:00:00 2001
From: Kenneth Myhra <kennethmyhra@gmail.com>
Date: Mon, 13 Dec 2021 18:43:39 +0100
Subject: LibCore: Add waitpid() wrapper that return ErrorOr<pid_t>

---
 Userland/Libraries/LibCore/System.cpp | 8 ++++++++
 Userland/Libraries/LibCore/System.h   | 2 ++
 2 files changed, 10 insertions(+)

(limited to 'Userland')

diff --git a/Userland/Libraries/LibCore/System.cpp b/Userland/Libraries/LibCore/System.cpp
index 54a04e9002..4014830411 100644
--- a/Userland/Libraries/LibCore/System.cpp
+++ b/Userland/Libraries/LibCore/System.cpp
@@ -380,4 +380,12 @@ ErrorOr<pid_t> posix_spawnp(StringView const path, posix_spawn_file_actions_t* c
     return child_pid;
 }
 
+ErrorOr<pid_t> waitpid(pid_t waitee, int* wstatus, int options)
+{
+    pid_t pid = ::waitpid(waitee, wstatus, options);
+    if (pid < 0)
+        return Error::from_syscall("waitpid"sv, -errno);
+    return pid;
+}
+
 }
diff --git a/Userland/Libraries/LibCore/System.h b/Userland/Libraries/LibCore/System.h
index e9d8dd8b8e..32d4beb711 100644
--- a/Userland/Libraries/LibCore/System.h
+++ b/Userland/Libraries/LibCore/System.h
@@ -13,6 +13,7 @@
 #include <signal.h>
 #include <spawn.h>
 #include <sys/stat.h>
+#include <sys/wait.h>
 #include <termios.h>
 #include <time.h>
 
@@ -53,5 +54,6 @@ ErrorOr<struct passwd> getpwnam(StringView name);
 ErrorOr<struct group> getgrnam(StringView name);
 ErrorOr<void> clock_settime(clockid_t clock_id, struct timespec* ts);
 ErrorOr<pid_t> posix_spawnp(StringView const path, posix_spawn_file_actions_t* const file_actions, posix_spawnattr_t* const attr, char* const arguments[], char* const envp[]);
+ErrorOr<pid_t> waitpid(pid_t waitee, int* wstatus, int options);
 
 }
-- 
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