From 09d8b2e359201af8a91f3d10354c4d9de1fd6781 Mon Sep 17 00:00:00 2001
From: Petr Hodina <petr.hodina@luxonis.com>
Date: Sat, 26 Apr 2025 10:47:59 +0200
Subject: [PATCH] iotools: Fix werror and refactor definition

---
 .../io/iotools/001-fix-werror-in-sprintf.patch      | 13 +++++++++++++
 pkgs/by-name/io/iotools/package.nix                 | 12 +++++++-----
 2 files changed, 20 insertions(+), 5 deletions(-)
 create mode 100644 pkgs/by-name/io/iotools/001-fix-werror-in-sprintf.patch

diff --git a/pkgs/by-name/io/iotools/001-fix-werror-in-sprintf.patch b/pkgs/by-name/io/iotools/001-fix-werror-in-sprintf.patch
new file mode 100644
index 000000000000..58d6e01de398
--- /dev/null
+++ b/pkgs/by-name/io/iotools/001-fix-werror-in-sprintf.patch
@@ -0,0 +1,13 @@
+diff --git a/commands.c b/commands.c
+index a83f1d5..b3f217a 100644
+--- a/commands.c
++++ b/commands.c
+@@ -152,1 +152,7 @@ build_symlink_name(const char *path_to_bin, const struct cmd_info *cmd)
+-	snprintf(link_name, FILENAME_MAX, "%s/%s", path_to_bin, cmd->name);
++	int result = snprintf(link_name, FILENAME_MAX, "%s/%s", path_to_bin, cmd->name);
++
++	if (result >= FILENAME_MAX) {
++		link_name[FILENAME_MAX - 1] = '\0';
++	} else if (result < 0) {
++		link_name[0] = '\0';
++	}
diff --git a/pkgs/by-name/io/iotools/package.nix b/pkgs/by-name/io/iotools/package.nix
index 7e71c12153bd..1e3a33d548b0 100644
--- a/pkgs/by-name/io/iotools/package.nix
+++ b/pkgs/by-name/io/iotools/package.nix
@@ -4,7 +4,7 @@
   fetchFromGitHub,
 }:
 
-stdenv.mkDerivation {
+stdenv.mkDerivation (finalAttrs: {
   pname = "iotools";
   version = "unstable-2017-12-11";
 
@@ -15,6 +15,8 @@ stdenv.mkDerivation {
     hash = "sha256-tlGXJn3n27mQDupMIVYDd86YaWazVwel/qs0QqCy1W8=";
   };
 
+  patches = [ ./001-fix-werror-in-sprintf.patch ];
+
   makeFlags = [
     "DEBUG=0"
     "STATIC=0"
@@ -24,7 +26,7 @@ stdenv.mkDerivation {
     install -Dm755 iotools -t $out/bin
   '';
 
-  meta = with lib; {
+  meta = {
     description = "Set of simple command line tools which allow access to
       hardware device registers";
     longDescription = ''
@@ -35,12 +37,12 @@ stdenv.mkDerivation {
       operations.
     '';
     homepage = "https://github.com/adurbin/iotools";
-    license = licenses.gpl2Only;
-    maintainers = with maintainers; [ felixsinger ];
+    license = lib.licenses.gpl2Only;
+    maintainers = with lib.maintainers; [ felixsinger ];
     platforms = [
       "x86_64-linux"
       "i686-linux"
     ];
     mainProgram = "iotools";
   };
-}
+})