1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Kenneth Myhra <kennethmyhra@serenityos.org>
* Copyright (c) 2021, Xavier Defrang <xavier.defrang@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Vector.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/DirIterator.h>
#include <LibCore/FilePermissionsMask.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio rpath fattr"));
StringView mode;
Vector<StringView> paths;
bool recursive = false;
Core::ArgsParser args_parser;
args_parser.add_option(recursive, "Change file modes recursively", "recursive", 'R');
args_parser.add_positional_argument(mode, "File mode in octal or symbolic notation", "mode");
args_parser.add_positional_argument(paths, "Paths to file", "paths");
args_parser.parse(arguments);
auto mask = TRY(Core::FilePermissionsMask::parse(mode));
Function<ErrorOr<void>(StringView const&)> update_path_permissions = [&](StringView const& path) -> ErrorOr<void> {
auto stat = TRY(Core::System::lstat(path));
if (S_ISLNK(stat.st_mode)) {
// Symlinks don't get processed unless they are explicitly listed on the command line.
if (!paths.contains_slow(path))
return {};
// The chmod syscall changes the file that a link points to, so we will have to get
// the correct mode to base our modifications on.
stat = TRY(Core::System::stat(path));
}
TRY(Core::System::chmod(path, mask.apply(stat.st_mode)));
if (recursive && S_ISDIR(stat.st_mode)) {
Core::DirIterator it(path, Core::DirIterator::Flags::SkipParentAndBaseDir);
while (it.has_next())
TRY(update_path_permissions(it.next_full_path()));
}
return {};
};
for (auto const& path : paths) {
TRY(update_path_permissions(path));
}
return 0;
}
|
