From ee34340c6afd273b3c0759ca40c2729fa8365e27 Mon Sep 17 00:00:00 2001
From: Jean-Baptiste Boric <jblbeurope@gmail.com>
Date: Sun, 12 Dec 2021 11:49:29 +0100
Subject: [PATCH] UserspaceEmulator: Remove support for SC_select syscall

---
 .../DevTools/UserspaceEmulator/Emulator.h     |  1 -
 .../UserspaceEmulator/Emulator_syscalls.cpp   | 41 -------------------
 2 files changed, 42 deletions(-)

diff --git a/Userland/DevTools/UserspaceEmulator/Emulator.h b/Userland/DevTools/UserspaceEmulator/Emulator.h
index fda1cd897be..a39e13b8880 100644
--- a/Userland/DevTools/UserspaceEmulator/Emulator.h
+++ b/Userland/DevTools/UserspaceEmulator/Emulator.h
@@ -210,7 +210,6 @@ private:
     int virt$rmdir(FlatPtr path, size_t path_length);
     int virt$sched_getparam(pid_t, FlatPtr);
     int virt$sched_setparam(int, FlatPtr);
-    int virt$select(FlatPtr);
     int virt$sendfd(int, int);
     int virt$sendmsg(int sockfd, FlatPtr msg_addr, int flags);
     int virt$set_coredump_metadata(FlatPtr address);
diff --git a/Userland/DevTools/UserspaceEmulator/Emulator_syscalls.cpp b/Userland/DevTools/UserspaceEmulator/Emulator_syscalls.cpp
index 5d30f6f93a9..28f7672026c 100644
--- a/Userland/DevTools/UserspaceEmulator/Emulator_syscalls.cpp
+++ b/Userland/DevTools/UserspaceEmulator/Emulator_syscalls.cpp
@@ -18,7 +18,6 @@
 #include <sys/ioctl.h>
 #include <sys/mman.h>
 #include <sys/poll.h>
-#include <sys/select.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/time.h>
@@ -203,8 +202,6 @@ u32 Emulator::virt_syscall(u32 function, u32 arg1, u32 arg2, u32 arg3)
         return virt$sched_getparam(arg1, arg2);
     case SC_sched_setparam:
         return virt$sched_setparam(arg1, arg2);
-    case SC_select:
-        return virt$select(arg1);
     case SC_sendfd:
         return virt$sendfd(arg1, arg2);
     case SC_sendmsg:
@@ -700,44 +697,6 @@ int Emulator::virt$sendmsg(int sockfd, FlatPtr msg_addr, int flags)
     return sendmsg(sockfd, &msg, flags);
 }
 
-int Emulator::virt$select(FlatPtr params_addr)
-{
-    Syscall::SC_select_params params;
-    mmu().copy_from_vm(&params, params_addr, sizeof(params));
-
-    fd_set readfds {};
-    fd_set writefds {};
-    fd_set exceptfds {};
-    struct timespec timeout;
-    u32 sigmask;
-
-    if (params.readfds)
-        mmu().copy_from_vm(&readfds, (FlatPtr)params.readfds, sizeof(readfds));
-    if (params.writefds)
-        mmu().copy_from_vm(&writefds, (FlatPtr)params.writefds, sizeof(writefds));
-    if (params.exceptfds)
-        mmu().copy_from_vm(&exceptfds, (FlatPtr)params.exceptfds, sizeof(exceptfds));
-    if (params.timeout)
-        mmu().copy_from_vm(&timeout, (FlatPtr)params.timeout, sizeof(timeout));
-    if (params.sigmask)
-        mmu().copy_from_vm(&sigmask, (FlatPtr)params.sigmask, sizeof(sigmask));
-
-    int rc = pselect(params.nfds, &readfds, &writefds, &exceptfds, params.timeout ? &timeout : nullptr, params.sigmask ? &sigmask : nullptr);
-    if (rc < 0)
-        return -errno;
-
-    if (params.readfds)
-        mmu().copy_to_vm((FlatPtr)params.readfds, &readfds, sizeof(readfds));
-    if (params.writefds)
-        mmu().copy_to_vm((FlatPtr)params.writefds, &writefds, sizeof(writefds));
-    if (params.exceptfds)
-        mmu().copy_to_vm((FlatPtr)params.exceptfds, &exceptfds, sizeof(exceptfds));
-    if (params.timeout)
-        mmu().copy_to_vm((FlatPtr)params.timeout, &timeout, sizeof(timeout));
-
-    return rc;
-}
-
 int Emulator::virt$getsockopt(FlatPtr params_addr)
 {
     Syscall::SC_getsockopt_params params;