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/* SPDX-License-Identifier: BSD-3-Clause */
/*
* Copyright (C) 2022, 2023 Ferass El Hafidi <vitali64pmemail@protonmail.com>
*/
#include <unistd.h>
#include <stdio.h>
#include <sys/utsname.h>
#include <errno.h>
#include <string.h>
#define REQ_PRINT_USAGE /* Require print_usage() from ../common/common.h */
#define REQ_ERRPRINT /* Require errprint() from ../common/common.h */
#define DESCRIPTION "Return system name."
#define OPERANDS "[-amnrsv]"
#include "../common/common.h"
int main(int argc, char *const argv[]) {
int argument;
struct utsname name;
char param[256];
for (int i = 0; i < 256; i++) param[i] = 0;
char *argv0 = strdup(argv[0]);
while ((argument = getopt(argc, argv, "amnrsv")) != -1) {
if (argument == '?') {
print_usage(argv[0], DESCRIPTION, OPERANDS, VERSION);
return 1;
}
param[argument] = argument;
if (argument == 'a') {
param['s'] = 's';
param['n'] = 'n';
param['r'] = 'r';
param['v'] = 'v';
param['m'] = 'm';
}
} argc -= optind; argv += optind;
uname(&name);
if (errno) return errprint(argv0, NULL, errno);
if (param['s'] || !(param['m'] && param['v'] && param['r'] && param['n']))
printf("%s ", name.sysname);
if (param['n']) printf("%s ", name.nodename);
if (param['r']) printf("%s ", name.release);
if (param['v']) printf("%s ", name.version);
if (param['m']) printf("%s", name.machine);
printf("\n");
return errprint(argv0, NULL, errno);
}
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