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chown: Implement recursion

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Tim Schumacher 2022-07-25 15:04:39 +02:00 committed by Linus Groh
parent 7b7c9a2194
commit 25e6ad8d3e
Notes: sideshowbarker 2024-07-17 08:34:38 +09:00 
Author: https://github.com/timschumi
Commit: https://github.com/SerenityOS/serenity/commit/25e6ad8d3e
Pull-request: https://github.com/SerenityOS/serenity/pull/14689
Reviewed-by: https://github.com/linusg
1 changed files with 27 additions and 4 deletions
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31
Userland/Utilities/chown.cpp
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@ -7,6 +7,7 @@
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/DirIterator.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
#include <grp.h>
@ -22,11 +23,15 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
String spec;
Vector<StringView> paths;
bool dont_follow_symlinks = false;
bool no_dereference = false;
bool recursive = false;
bool 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_option(no_dereference, "Don't follow symlinks", "no-dereference", 'h');
args_parser.add_option(recursive, "Change file ownership recursively", "recursive", 'R');
args_parser.add_option(follow_symlinks, "Follow symlinks while recursing into directories", nullptr, 'L');
args_parser.add_positional_argument(spec, "User and group IDs", "USER[:GROUP]");
args_parser.add_positional_argument(paths, "Paths to files", "PATH");
args_parser.parse(arguments);
@ -66,12 +71,30 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
}
}
for (auto path : paths) {
if (dont_follow_symlinks) {
Function<ErrorOr<void>(StringView)> update_path_owner = [&](StringView path) -> ErrorOr<void> {
auto stat = TRY(Core::System::lstat(path));
if (S_ISLNK(stat.st_mode) && !follow_symlinks && !paths.contains_slow(path))
return {};
if (no_dereference) {
TRY(Core::System::lchown(path, new_uid, new_gid));
} else {
TRY(Core::System::chown(path, new_uid, new_gid));
}
if (recursive && S_ISDIR(stat.st_mode)) {
Core::DirIterator it(path, Core::DirIterator::Flags::SkipParentAndBaseDir);
while (it.has_next())
TRY(update_path_owner(it.next_full_path()));
}
return {};
};
for (auto path : paths) {
TRY(update_path_owner(path));
}
return 0;