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https://github.com/RGBCube/serenity
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mknod: Use ArgsParser for argument parsing
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commit
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1 changed files with 34 additions and 21 deletions
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@ -5,36 +5,36 @@
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*/
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#include <AK/Format.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/sysmacros.h>
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static int usage()
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{
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warnln("usage: mknod <name> <c|b|p> [<major> <minor>]");
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return 1;
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}
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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TRY(Core::System::pledge("stdio dpath"));
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StringView name;
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StringView type_string;
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StringView major_string;
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StringView minor_string;
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Core::ArgsParser args_parser;
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args_parser.set_general_help("Creates a file system node.");
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args_parser.add_positional_argument(name, "Pathname to create", "name", Core::ArgsParser::Required::Yes);
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args_parser.add_positional_argument(type_string, "Type of file to create", "type", Core::ArgsParser::Required::Yes);
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args_parser.add_positional_argument(major_string, "Major device number", "major", Core::ArgsParser::Required::No);
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args_parser.add_positional_argument(minor_string, "Minor device number", "minor", Core::ArgsParser::Required::No);
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args_parser.parse(arguments);
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// FIXME: Add some kind of option for specifying the file permissions.
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if (arguments.strings.size() < 3)
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return usage();
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if (arguments.strings[2].starts_with('p')) {
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if (arguments.strings.size() != 3)
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return usage();
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} else if (arguments.strings.size() != 5) {
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return usage();
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}
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auto name = arguments.strings[1];
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mode_t mode = 0666;
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switch (arguments.strings[2][0]) {
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char type = type_string[0];
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switch (type) {
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case 'c':
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case 'u':
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mode |= S_IFCHR;
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@ -46,14 +46,27 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
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mode |= S_IFIFO;
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break;
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default:
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return usage();
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warnln("Invalid device type {}", type);
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return 1;
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}
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if (type == 'p') {
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if (!major_string.is_empty() || !minor_string.is_empty()) {
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warnln("Do not set device numbers when creating FIFO");
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return 1;
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}
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} else {
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if (major_string.is_empty() || minor_string.is_empty()) {
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warnln("Major and minor device numbers are required");
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return 1;
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}
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}
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int major = 0;
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int minor = 0;
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if (arguments.strings.size() == 5) {
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major = atoi(arguments.argv[3]);
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minor = atoi(arguments.argv[4]);
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if (type != 'p') {
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major = atoi(major_string.characters_without_null_termination());
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minor = atoi(minor_string.characters_without_null_termination());
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}
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TRY(Core::System::mknod(name, mode, makedev(major, minor)));
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