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mknod: Use ArgsParser for argument parsing

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Monroe Clinton 2023-05-23 21:25:04 -04:00 • committed by Jelle Raaijmakers
parent 3bc62b7c7b
commit 704d289851
1 changed files with 34 additions and 21 deletions
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55
Userland/Utilities/mknod.cpp
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@ -5,36 +5,36 @@
*/
#include <AK/Format.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
static int usage()
{
warnln("usage: mknod <name> <c|b|p> [<major> <minor>]");
return 1;
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio dpath"));
StringView name;
StringView type_string;
StringView major_string;
StringView minor_string;
Core::ArgsParser args_parser;
args_parser.set_general_help("Creates a file system node.");
args_parser.add_positional_argument(name, "Pathname to create", "name", Core::ArgsParser::Required::Yes);
args_parser.add_positional_argument(type_string, "Type of file to create", "type", Core::ArgsParser::Required::Yes);
args_parser.add_positional_argument(major_string, "Major device number", "major", Core::ArgsParser::Required::No);
args_parser.add_positional_argument(minor_string, "Minor device number", "minor", Core::ArgsParser::Required::No);
args_parser.parse(arguments);
// FIXME: Add some kind of option for specifying the file permissions.
if (arguments.strings.size() < 3)
return usage();
if (arguments.strings[2].starts_with('p')) {
if (arguments.strings.size() != 3)
return usage();
} else if (arguments.strings.size() != 5) {
return usage();
}
auto name = arguments.strings[1];
mode_t mode = 0666;
switch (arguments.strings[2][0]) {
char type = type_string[0];
switch (type) {
case 'c':
case 'u':
mode |= S_IFCHR;
@ -46,14 +46,27 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
mode |= S_IFIFO;
break;
default:
return usage();
warnln("Invalid device type {}", type);
return 1;
}
if (type == 'p') {
if (!major_string.is_empty() || !minor_string.is_empty()) {
warnln("Do not set device numbers when creating FIFO");
return 1;
}
} else {
if (major_string.is_empty() || minor_string.is_empty()) {
warnln("Major and minor device numbers are required");
return 1;
}
}
int major = 0;
int minor = 0;
if (arguments.strings.size() == 5) {
major = atoi(arguments.argv[3]);
minor = atoi(arguments.argv[4]);
if (type != 'p') {
major = atoi(major_string.characters_without_null_termination());
minor = atoi(minor_string.characters_without_null_termination());
}
TRY(Core::System::mknod(name, mode, makedev(major, minor)));