From 2e9a194ce90e0f0021f5c23caaa09aac0c71107f Mon Sep 17 00:00:00 2001
From: "Emil J. Tywoniak" <emil@tywoniak.eu>
Date: Fri, 9 May 2025 21:23:34 +0200
Subject: [PATCH] gzip: reject uncompressing directories

---
 kernel/gzip.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/gzip.cc b/kernel/gzip.cc
index 4567fe03b..6790b536e 100644
--- a/kernel/gzip.cc
+++ b/kernel/gzip.cc
@@ -102,6 +102,8 @@ gzip_istream::ibuf::~ibuf() {
 // returns the original ifstream, rewound to the start.
 // Never returns nullptr or failed state istream*
 std::istream* uncompressed(const std::string filename, std::ios_base::openmode mode) {
+	if (!check_file_exists(filename))
+		log_cmd_error("File `%s' not found or is a directory\n", filename.c_str());
 	std::ifstream* f = new std::ifstream();
 	f->open(filename, mode);
 	if (f->fail())