LCOV - code coverage report
Current view: top level - tests/integration/harness/gkfs.io - dup_validate.cpp (source / functions) Hit Total Coverage
Test: coverage.info Lines: 26 39 66.7 %
Date: 2024-04-30 13:21:35 Functions: 3 3 100.0 %
Legend: Lines: hit not hit

          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 dup_validate_options {
      48             :     bool verbose{};
      49             :     std::string pathname;
      50             : 
      51             : 
      52             :     REFL_DECL_STRUCT(dup_validate_options, REFL_DECL_MEMBER(bool, verbose),
      53             :                      REFL_DECL_MEMBER(std::string, pathname));
      54             : };
      55             : 
      56             : struct dup_validate_output {
      57             :     int retval;
      58             :     int errnum;
      59             : 
      60             :     REFL_DECL_STRUCT(dup_validate_output, REFL_DECL_MEMBER(int, retval),
      61             :                      REFL_DECL_MEMBER(int, errnum));
      62             : };
      63             : 
      64             : void
      65           1 : to_json(json& record, const dup_validate_output& out) {
      66           1 :     record = serialize(out);
      67           1 : }
      68             : 
      69             : void
      70           1 : dup_validate_exec(const dup_validate_options& opts) {
      71             : 
      72           1 :     int fd = ::open(opts.pathname.c_str(), O_WRONLY);
      73             : 
      74           1 :     if(fd == -1) {
      75           0 :         if(opts.verbose) {
      76           0 :             fmt::print(
      77             :                     "dup_validate(pathname=\"{}\") = {}, errno: {} [{}]\n",
      78           0 :                     opts.pathname, fd, errno, ::strerror(errno));
      79           0 :             return;
      80             :         }
      81             : 
      82           0 :         json out = dup_validate_output{fd, errno};
      83           0 :         fmt::print("{}\n", out.dump(2));
      84             : 
      85           0 :         return;
      86             :     }
      87             : 
      88             : 
      89           1 :     auto rv = ::dup(fd);
      90           1 :     auto rv2 = ::dup2(fd, rv);
      91             :     
      92             : 
      93             : 
      94           1 :     if(opts.verbose) {
      95           0 :         fmt::print(
      96             :                 "dup_validate(pathname=\"{}\") = {}, errno: {} [{}]\n",
      97           0 :                 opts.pathname, rv, errno, ::strerror(errno));
      98           0 :         return;
      99             :     }
     100             : 
     101           1 :     if(rv < 0 || rv2 < 0) {
     102           0 :         json out = dup_validate_output{(int) rv, errno};
     103           0 :         fmt::print("{}\n", out.dump(2));
     104           0 :         return;
     105             :     }
     106             : 
     107           1 :     rv = 0;
     108           1 :     errno = 0;
     109           1 :     json out = dup_validate_output{(int) rv, errno};
     110           1 :     fmt::print("{}\n", out.dump(2));
     111           1 :     return;
     112             : }
     113             : 
     114             : void
     115         247 : dup_validate_init(CLI::App& app) {
     116             : 
     117             :     // Create the option and subcommand objects
     118         247 :     auto opts = std::make_shared<dup_validate_options>();
     119         494 :     auto* cmd = app.add_subcommand(
     120             :             "dup_validate",
     121         494 :             "Execute dup, dup2, and dup3 returns 0 if the file descriptor is valid");
     122             : 
     123             :     // Add options to cmd, binding them to opts
     124         247 :     cmd->add_flag("-v,--verbose", opts->verbose,
     125         494 :                   "Produce human writeable output");
     126             : 
     127         494 :     cmd->add_option("pathname", opts->pathname, "File name")
     128             :             ->required()
     129         494 :             ->type_name("");
     130             : 
     131         989 :     cmd->callback([opts]() { dup_validate_exec(*opts); });
     132         247 : }

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