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|
{
config,
lib,
pkgs,
...
}:
let
inherit (lib)
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
'';
stub-ld = stub-ld-for pkgs 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;
};
meta.maintainers = with lib.maintainers; [ tejing ];
}
|
