jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <AK/DeprecatedString.h>
8#include <AK/LexicalPath.h>
9#include <LibCore/ArgsParser.h>
10#include <LibCore/DeprecatedFile.h>
11#include <LibCore/System.h>
12#include <LibMain/Main.h>
13#include <stdio.h>
14#include <string.h>
15#include <sys/stat.h>
16#include <unistd.h>
17
18ErrorOr<int> serenity_main(Main::Arguments arguments)
19{
20 TRY(Core::System::pledge("stdio rpath wpath cpath fattr"));
21
22 bool force = false;
23 bool no_clobber = false;
24 bool verbose = false;
25
26 Vector<DeprecatedString> paths;
27
28 Core::ArgsParser args_parser;
29 args_parser.add_option(force, "Force", "force", 'f');
30 args_parser.add_option(no_clobber, "Do not overwrite existing files", "no-clobber", 'n');
31 args_parser.add_option(verbose, "Verbose", "verbose", 'v');
32 args_parser.add_positional_argument(paths, "Paths to files being moved followed by target location", "paths");
33 args_parser.parse(arguments);
34
35 if (paths.size() < 2) {
36 args_parser.print_usage(stderr, arguments.strings[0]);
37 return 1;
38 }
39
40 if (force && no_clobber) {
41 warnln("-f (--force) overrides -n (--no-clobber)");
42 no_clobber = false;
43 }
44
45 auto original_new_path = paths.take_last();
46
47 struct stat st;
48
49 int rc = lstat(original_new_path.characters(), &st);
50 if (rc != 0 && errno != ENOENT) {
51 perror("lstat");
52 return 1;
53 }
54
55 if (paths.size() > 1 && !S_ISDIR(st.st_mode)) {
56 warnln("Target is not a directory: {}", original_new_path);
57 return 1;
58 }
59
60 auto my_umask = umask(0);
61 umask(my_umask);
62
63 for (auto& old_path : paths) {
64 DeprecatedString combined_new_path;
65 auto new_path = original_new_path;
66 if (S_ISDIR(st.st_mode)) {
67 auto old_basename = LexicalPath::basename(old_path);
68 combined_new_path = DeprecatedString::formatted("{}/{}", original_new_path, old_basename);
69 new_path = combined_new_path.characters();
70 }
71
72 if (no_clobber && Core::DeprecatedFile::exists(new_path))
73 continue;
74
75 rc = rename(old_path.characters(), new_path.characters());
76 if (rc < 0) {
77 if (errno == EXDEV) {
78 auto result = Core::DeprecatedFile::copy_file_or_directory(
79 new_path, old_path,
80 Core::DeprecatedFile::RecursionMode::Allowed,
81 Core::DeprecatedFile::LinkMode::Disallowed,
82 Core::DeprecatedFile::AddDuplicateFileMarker::No);
83
84 if (result.is_error()) {
85 warnln("mv: could not move '{}': {}", old_path, static_cast<Error const&>(result.error()));
86 return 1;
87 }
88 rc = unlink(old_path.characters());
89 if (rc < 0)
90 warnln("mv: unlink '{}': {}", old_path, strerror(errno));
91 } else {
92 warnln("mv: cannot move '{}' : {}", old_path, strerror(errno));
93 }
94 }
95
96 if (verbose && rc == 0)
97 outln("renamed '{}' -> '{}'", old_path, new_path);
98 }
99
100 return 0;
101}