ladybird/Userland/Utilities/chgrp.cpp
Kenneth Myhra a28aa8e6c1 chgrp: Use StringView instead of 'char const*'
This gets rid of a couple ad-hoc instances of DeprecatedString and makes
it more trivial to use the fallible function Core::System::getgrnam() in
place of LibC's getgrnam().
2023-01-08 19:02:50 +01:00

53 lines
1.4 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/ArgsParser.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
#include <grp.h>
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio rpath chown"));
StringView gid_arg;
StringView path {};
bool dont_follow_symlinks = false;
Core::ArgsParser args_parser;
args_parser.set_general_help("Change the owning group for a file or directory.");
args_parser.add_option(dont_follow_symlinks, "Don't follow symlinks", "no-dereference", 'h');
args_parser.add_positional_argument(gid_arg, "Group ID", "gid");
args_parser.add_positional_argument(path, "Path to file", "path");
args_parser.parse(arguments);
gid_t new_gid = -1;
if (gid_arg.is_empty()) {
warnln("Empty gid option");
return 1;
}
auto number = gid_arg.to_uint();
if (number.has_value()) {
new_gid = number.value();
} else {
auto group = TRY(Core::System::getgrnam(gid_arg));
if (!group.has_value()) {
warnln("Unknown group '{}'", gid_arg);
return 1;
}
new_gid = group->gr_gid;
}
if (dont_follow_symlinks) {
TRY(Core::System::lchown(path, -1, new_gid));
} else {
TRY(Core::System::chown(path, -1, new_gid));
}
return 0;
}