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|
{ config, lib, pkgs, ... }:
let
inherit (lib) optionalString mkOption types mkIf mkDefault;
cfg = config.environment.stub-ld;
message = ''
NixOS cannot run dynamically linked executables intended for generic
linux environments out of the box. For more information, see:
https://nix.dev/permalink/stub-ld
'';
stub-ld-for = pkgsArg: messageArg: pkgsArg.pkgsStatic.runCommandCC "stub-ld" {
nativeBuildInputs = [ pkgsArg.unixtools.xxd ];
inherit messageArg;
} ''
printf "%s" "$messageArg" | xxd -i -n message >main.c
cat <<EOF >>main.c
#include <stdio.h>
int main(int argc, char * argv[]) {
fprintf(stderr, "Could not start dynamically linked executable: %s\n", argv[0]);
fwrite(message, sizeof(unsigned char), message_len, stderr);
return 127; // matches behavior of bash and zsh without a loader. fish uses 139
}
EOF
$CC -Os main.c -o $out
'';
pkgs32 = pkgs.pkgsi686Linux;
stub-ld = stub-ld-for pkgs message;
stub-ld32 = stub-ld-for pkgs32 message;
in {
options = {
environment.stub-ld = {
enable = mkOption {
type = types.bool;
default = true;
example = false;
description = ''
Install a stub ELF loader to print an informative error message
in the event that a user attempts to run an ELF binary not
compiled for NixOS.
'';
};
};
};
config = mkIf cfg.enable {
environment.ldso = mkDefault stub-ld;
environment.ldso32 = mkIf pkgs.stdenv.isx86_64 (mkDefault stub-ld32);
};
meta.maintainers = with lib.maintainers; [ tejing ];
}
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