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du: Add -x option to not traverse directories across filesystems

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Tim Ledbetter 2023-10-18 23:14:17 +01:00 committed by Jelle Raaijmakers
parent cc5c7d2a29
commit c5a4c22fa7
Notes: sideshowbarker 2024-07-17 02:35:27 +09:00 
Author: https://github.com/tcl3
Commit: https://github.com/SerenityOS/serenity/commit/c5a4c22fa7
Pull-request: https://github.com/SerenityOS/serenity/pull/21496
Reviewed-by: https://github.com/gmta ✅
2 changed files with 14 additions and 3 deletions
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1
Base/usr/share/man/man1/du.md
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@ -23,6 +23,7 @@ $ du [files...]
* `-t size`, `--threshold size`: Exclude entries smaller than size if positive, or entries greater than size if negative
* `--time time-type`: Show time of time time-type of any file in the directory, or any of its subdirectories. Available choices: mtime, modification, ctime, status, use, atime, access
* `--exclude pattern`: Exclude files that match pattern
* `-x`, `--one-file-system`: Don't traverse directories on different file systems
* `-X file, --exclude-from`: Exclude files that match any pattern in file
## Arguments

16
Userland/Utilities/du.cpp
View file

@ -29,6 +29,7 @@ struct DuOption {
bool human_readable_si = false;
bool all = false;
bool apparent_size = false;
bool one_file_system = false;
i64 threshold = 0;
TimeType time_type = TimeType::NotUsed;
Vector<DeprecatedString> excluded_patterns;
@ -57,7 +58,7 @@ struct AK::Traits<VisitedFile> : public GenericTraits<VisitedFile> {
static HashTable<VisitedFile> s_visited_files;
static ErrorOr<void> parse_args(Main::Arguments arguments, Vector<DeprecatedString>& files, DuOption& du_option);
static u64 print_space_usage(DeprecatedString const& path, DuOption const& du_option, size_t current_depth);
static u64 print_space_usage(DeprecatedString const& path, DuOption const& du_option, size_t current_depth, Optional<dev_t> root_device = {});
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
@ -124,6 +125,7 @@ ErrorOr<void> parse_args(Main::Arguments arguments, Vector<DeprecatedString>& fi
args_parser.add_option(move(time_option));
args_parser.add_option(pattern, "Exclude files that match pattern", "exclude", 0, "pattern");
args_parser.add_option(exclude_from, "Exclude files that match any pattern in file", "exclude-from", 'X', "file");
args_parser.add_option(du_option.one_file_system, "Don't traverse directories on different file systems", "one-file-system", 'x');
args_parser.add_option(du_option.block_size, "Outputs file sizes as the required blocks with the given size (defaults to 1024)", "block-size", 'B', "size");
args_parser.add_option(move(block_size_1k_option));
args_parser.add_positional_argument(files_to_process, "File to process", "file", Core::ArgsParser::Required::No);
@ -154,7 +156,7 @@ ErrorOr<void> parse_args(Main::Arguments arguments, Vector<DeprecatedString>& fi
return {};
}
u64 print_space_usage(DeprecatedString const& path, DuOption const& du_option, size_t current_depth)
u64 print_space_usage(DeprecatedString const& path, DuOption const& du_option, size_t current_depth, Optional<dev_t> root_device)
{
u64 size = 0;
auto path_stat_or_error = Core::System::lstat(path);
@ -165,6 +167,14 @@ u64 print_space_usage(DeprecatedString const& path, DuOption const& du_option, s
auto path_stat = path_stat_or_error.release_value();
if (!root_device.has_value()) {
root_device = path_stat.st_dev;
}
if (du_option.one_file_system && root_device.value() != path_stat.st_dev) {
return 0;
}
VisitedFile visited_file { path_stat.st_dev, path_stat.st_ino };
if (s_visited_files.contains(visited_file)) {
return 0;
@ -182,7 +192,7 @@ u64 print_space_usage(DeprecatedString const& path, DuOption const& du_option, s
while (di.has_next()) {
auto const child_path = di.next_full_path();
size += print_space_usage(child_path, du_option, current_depth + 1);
size += print_space_usage(child_path, du_option, current_depth + 1, root_device);
}
}