system/serenity
system/serenity
1
0
Fork 0
mirror of https://github.com/SerenityOS/serenity synced 2024-10-07 00:19:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

DynamicLoader: Add an option to change argv0

Browse source 
This is useful for testing ELF binaries that expose other functionalites
based on the argv0 string (BuggieBox, for example, does it to determine
which utility to run).
This commit is contained in:
Liav A 2023-09-16 12:27:47 +03:00 committed by Andrew Kaster
parent a5e2694ebf
commit 7437ccd66d
1 changed files with 5 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
Userland/DynamicLoader/main.cpp
View file

@ -57,11 +57,13 @@ static int _main(int argc, char** argv, char** envp, bool is_secure)
bool flag_dry_run { false };
Vector<StringView> command;
StringView argv0;
Core::ArgsParser args_parser;
args_parser.set_general_help("Run dynamically-linked ELF executables");
args_parser.set_stop_on_first_non_option(true);
args_parser.add_option(flag_dry_run, "Run in dry-run mode", "dry-run", 'd');
args_parser.add_option(argv0, "Run with custom argv0", "argv0", 'E', "custom argv0");
args_parser.add_positional_argument(command, "Command to execute", "command");
// NOTE: Don't use regular PrintUsageAndExit policy for ArgsParser, as it will simply
// fail with a nullptr-dereference as the LibC exit function is not suitable for usage
@ -91,6 +93,9 @@ static int _main(int argc, char** argv, char** envp, bool is_secure)
for (size_t index = 0; index < command.size(); index++)
argv[index] = const_cast<char*>(command_with_args[index].characters_without_null_termination());
if (!argv0.is_empty())
argv[0] = const_cast<char*>(argv0.characters_without_null_termination());
auto entry_point = ELF::DynamicLinker::linker_main(move(main_program_path), main_program_fd, is_secure, envp);
if (flag_dry_run)
return 0;