From ad37ca48152e9b87a7d7480a41224245465b4f8c Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Thu, 16 Dec 2021 19:31:50 +0100
Subject: [PATCH] LibCore: Add syscall wrapper for setgroups()

---
 Userland/Libraries/LibCore/System.cpp | 7 +++++++
 Userland/Libraries/LibCore/System.h   | 1 +
 2 files changed, 8 insertions(+)

diff --git a/Userland/Libraries/LibCore/System.cpp b/Userland/Libraries/LibCore/System.cpp
index e99cf059c8..9e3fe04c76 100644
--- a/Userland/Libraries/LibCore/System.cpp
+++ b/Userland/Libraries/LibCore/System.cpp
@@ -83,6 +83,13 @@ ErrorOr<void> ptrace_peekbuf(pid_t tid, void const* tracee_addr, Bytes destinati
     int rc = syscall(SC_ptrace, &params);
     HANDLE_SYSCALL_RETURN_VALUE("ptrace_peekbuf", rc, {});
 }
+
+ErrorOr<void> setgroups(Span<gid_t const> gids)
+{
+    if (::setgroups(gids.size(), gids.data()) < 0)
+        return Error::from_syscall("setgroups"sv, -errno);
+    return {};
+}
 #endif
 
 ErrorOr<void> sigaction(int signal, struct sigaction const* action, struct sigaction* old_action)
diff --git a/Userland/Libraries/LibCore/System.h b/Userland/Libraries/LibCore/System.h
index f942c51c40..b552db968b 100644
--- a/Userland/Libraries/LibCore/System.h
+++ b/Userland/Libraries/LibCore/System.h
@@ -26,6 +26,7 @@ ErrorOr<Array<int, 2>> pipe2(int flags);
 ErrorOr<void> sendfd(int sockfd, int fd);
 ErrorOr<int> recvfd(int sockfd, int options);
 ErrorOr<void> ptrace_peekbuf(pid_t tid, void const* tracee_addr, Bytes destination_buf);
+ErrorOr<void> setgroups(Span<gid_t const>);
 #endif
 
 ErrorOr<void> sigaction(int signal, struct sigaction const* action, struct sigaction* old_action);