From 431145148ef2a9141cf176276c89774e0f4eea40 Mon Sep 17 00:00:00 2001
From: Brian Gianforcaro <b.gianfo@gmail.com>
Date: Sun, 9 Aug 2020 14:57:50 -0700
Subject: [PATCH] Kernel: Use Userspace<T> for the fstat syscall

---
 Kernel/Process.h         | 2 +-
 Kernel/Syscalls/stat.cpp | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/Kernel/Process.h b/Kernel/Process.h
index 6e17e72e2b..1583133f37 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -224,7 +224,7 @@ public:
     ssize_t sys$read(int fd, Userspace<u8*>, ssize_t);
     ssize_t sys$write(int fd, const u8*, ssize_t);
     ssize_t sys$writev(int fd, const struct iovec* iov, int iov_count);
-    int sys$fstat(int fd, stat*);
+    int sys$fstat(int fd, Userspace<stat*>);
     int sys$stat(Userspace<const Syscall::SC_stat_params*>);
     int sys$lseek(int fd, off_t, int whence);
     int sys$kill(pid_t pid_or_pgid, int sig);
diff --git a/Kernel/Syscalls/stat.cpp b/Kernel/Syscalls/stat.cpp
index 33e90443aa..2ea70a1ab5 100644
--- a/Kernel/Syscalls/stat.cpp
+++ b/Kernel/Syscalls/stat.cpp
@@ -31,7 +31,7 @@
 
 namespace Kernel {
 
-int Process::sys$fstat(int fd, stat* user_statbuf)
+int Process::sys$fstat(int fd, Userspace<stat*> user_statbuf)
 {
     REQUIRE_PROMISE(stdio);
     if (!validate_write_typed(user_statbuf))
@@ -39,8 +39,7 @@ int Process::sys$fstat(int fd, stat* user_statbuf)
     auto description = file_description(fd);
     if (!description)
         return -EBADF;
-    stat buffer;
-    memset(&buffer, 0, sizeof(buffer));
+    stat buffer = {};
     int rc = description->fstat(buffer);
     copy_to_user(user_statbuf, &buffer);
     return rc;