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chown+chgrp: Add --no-dereference option

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This option will change the ownership of the symlink rather than the
file it points to.
This commit is contained in:
circl 2021-12-31 19:28:24 +01:00 committed by Andreas Kling
parent 63760603f3
commit 4b40d2cc07
Notes: sideshowbarker 2024-07-17 21:50:34 +09:00 
Author: https://github.com/circl-lastname
Commit: https://github.com/SerenityOS/serenity/commit/4b40d2cc07e
Pull-request: https://github.com/SerenityOS/serenity/pull/11522
Reviewed-by: https://github.com/ADKaster
2 changed files with 24 additions and 11 deletions
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8
Userland/Utilities/chgrp.cpp
View File

@ -17,9 +17,11 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
const char* gid_arg = nullptr;
const char* path = nullptr;
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);
@ -43,7 +45,11 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
new_gid = group->gr_gid;
}
TRY(Core::System::chown(path, -1, new_gid));
if (dont_follow_symlinks) {
TRY(Core::System::lchown(path, -1, new_gid));
} else {
TRY(Core::System::chown(path, -1, new_gid));
}
return 0;
}

27
Userland/Utilities/chown.cpp
View File

@ -6,6 +6,7 @@
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
#include <grp.h>
@ -19,19 +20,21 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio rpath chown", nullptr));
if (arguments.strings.size() < 3) {
warnln("usage: chown <uid[:gid]> <path>");
return 1;
}
String spec;
String path;
bool dont_follow_symlinks = false;
Core::ArgsParser args_parser;
args_parser.set_general_help("Change the ownership of a file or directory.");
args_parser.add_option(dont_follow_symlinks, "Don't follow symlinks", "no-dereference", 'h');
args_parser.add_positional_argument(spec, "User and group IDs", "USER[:GROUP]");
args_parser.add_positional_argument(path, "Path to file", "PATH");
args_parser.parse(arguments);
uid_t new_uid = -1;
gid_t new_gid = -1;
auto parts = arguments.strings[1].split_view(':', true);
if (parts.is_empty()) {
warnln("Empty uid/gid spec");
return 1;
}
auto parts = spec.split_view(':', true);
if (parts[0].is_empty() || (parts.size() == 2 && parts[1].is_empty()) || parts.size() > 2) {
warnln("Invalid uid/gid spec");
return 1;
@ -63,7 +66,11 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
}
}
TRY(Core::System::chown(arguments.strings[2], new_uid, new_gid));
if (dont_follow_symlinks) {
TRY(Core::System::lchown(path, new_uid, new_gid));
} else {
TRY(Core::System::chown(path, new_uid, new_gid));
}
return 0;
}