Line data Source code
1 : /*
2 : Copyright 2018-2024, Barcelona Supercomputing Center (BSC), Spain
3 : Copyright 2015-2024, Johannes Gutenberg Universitaet Mainz, Germany
4 :
5 : This software was partially supported by the
6 : EC H2020 funded project NEXTGenIO (Project ID: 671951, www.nextgenio.eu).
7 :
8 : This software was partially supported by the
9 : ADA-FS project under the SPPEXA project funded by the DFG.
10 :
11 : This file is part of GekkoFS.
12 :
13 : GekkoFS is free software: you can redistribute it and/or modify
14 : it under the terms of the GNU General Public License as published by
15 : the Free Software Foundation, either version 3 of the License, or
16 : (at your option) any later version.
17 :
18 : GekkoFS is distributed in the hope that it will be useful,
19 : but WITHOUT ANY WARRANTY; without even the implied warranty of
20 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 : GNU General Public License for more details.
22 :
23 : You should have received a copy of the GNU General Public License
24 : along with GekkoFS. If not, see <https://www.gnu.org/licenses/>.
25 :
26 : SPDX-License-Identifier: GPL-3.0-or-later
27 : */
28 :
29 : /* C++ includes */
30 : #include <CLI/CLI.hpp>
31 : #include <nlohmann/json.hpp>
32 : #include <memory>
33 : #include <fmt/format.h>
34 : #include <commands.hpp>
35 : #include <reflection.hpp>
36 : #include <serialize.hpp>
37 : #include <binary_buffer.hpp>
38 :
39 : /* C includes */
40 : #include <sys/types.h>
41 : #include <sys/stat.h>
42 : #include <fcntl.h>
43 : #include <unistd.h>
44 :
45 : using json = nlohmann::json;
46 :
47 494 : struct rename_options {
48 : bool verbose{};
49 : std::string pathname;
50 : std::string pathname2;
51 :
52 : REFL_DECL_STRUCT(rename_options, REFL_DECL_MEMBER(bool, verbose),
53 : REFL_DECL_MEMBER(std::string, pathname),
54 : REFL_DECL_MEMBER(std::string, pathname2));
55 : };
56 :
57 : struct rename_output {
58 : ::off_t retval;
59 : int errnum;
60 :
61 : REFL_DECL_STRUCT(rename_output, REFL_DECL_MEMBER(::off_t, retval),
62 : REFL_DECL_MEMBER(int, errnum));
63 : };
64 :
65 : void
66 12 : to_json(json& record, const rename_output& out) {
67 12 : record = serialize(out);
68 12 : }
69 :
70 :
71 : void
72 12 : rename_exec(const rename_options& opts) {
73 :
74 12 : int fd = ::rename(opts.pathname.c_str(), opts.pathname2.c_str());
75 :
76 12 : if(fd == -1) {
77 1 : if(opts.verbose) {
78 0 : fmt::print("rename(pathname=\"{}\", pathname2=\"{}\") = {}, errno: {} [{}]\n",
79 0 : opts.pathname, opts.pathname2, fd, errno, ::strerror(errno));
80 0 : return;
81 : }
82 : }
83 :
84 12 : json out = rename_output{fd, errno};
85 12 : fmt::print("{}\n", out.dump(2));
86 :
87 12 : return;
88 : }
89 :
90 : void
91 247 : rename_init(CLI::App& app) {
92 :
93 : // Create the option and subcommand objects
94 247 : auto opts = std::make_shared<rename_options>();
95 247 : auto* cmd = app.add_subcommand("rename", "Execute the rename() system call");
96 :
97 : // Add options to cmd, binding them to opts
98 247 : cmd->add_flag("-v,--verbose", opts->verbose,
99 494 : "Produce human writeable output");
100 :
101 494 : cmd->add_option("pathname", opts->pathname, "old name")
102 : ->required()
103 494 : ->type_name("");
104 :
105 494 : cmd->add_option("pathname2", opts->pathname2, "new name")
106 : ->required()
107 494 : ->type_name("");
108 :
109 1000 : cmd->callback([opts]() { rename_exec(*opts); });
110 247 : }
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