From 67f01fd82eb74bc4eabb1273a300d17784167283 Mon Sep 17 00:00:00 2001
From: Jean-Baptiste Boric <jblbeurope@gmail.com>
Date: Thu, 18 Mar 2021 22:58:39 +0100
Subject: [PATCH] checksum: Don't read the entire input file in memory

Unsurprisingly, this doesn't work too well if the input file is in the
gigabyte range.
---
 Userland/Utilities/checksum.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Userland/Utilities/checksum.cpp b/Userland/Utilities/checksum.cpp
index 21c0eb43ee..156f2dc0dd 100644
--- a/Userland/Utilities/checksum.cpp
+++ b/Userland/Utilities/checksum.cpp
@@ -85,7 +85,9 @@ int main(int argc, char** argv)
             has_error = true;
             continue;
         }
-        hash.update(file->read_all());
+
+        while (!file->eof() && !file->has_error())
+            hash.update(file->read(PAGE_SIZE));
         auto digest = hash.digest();
         auto digest_data = digest.immutable_data();
         StringBuilder builder;