cb13448179
free, slabtop and uptime would happily take extra command line arguments and doing nothing about them. The programs now check optind after option processing and will give you usage screen if there is anything extra. References: procps-ng/procps#181
116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/*
|
|
* uptime.c - display system uptime
|
|
* Copyright (C) 2012 Craig Small <csmall-procps@enc.com.au>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <getopt.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <time.h>
|
|
#include <sys/time.h>
|
|
|
|
#include "c.h"
|
|
#include "fileutils.h"
|
|
#include "nls.h"
|
|
#include "proc/sysinfo.h"
|
|
#include "proc/whattime.h"
|
|
#include "proc/version.h"
|
|
|
|
static void print_uptime_since()
|
|
{
|
|
double now, uptime_secs, idle_secs;
|
|
time_t up_since_secs;
|
|
struct tm *up_since;
|
|
struct timeval tim;
|
|
|
|
/* Get the current time and convert it to a double */
|
|
if (gettimeofday(&tim, NULL) != 0)
|
|
xerr(EXIT_FAILURE, "gettimeofday");
|
|
now = tim.tv_sec + (tim.tv_usec / 1000000.0);
|
|
|
|
/* Get the uptime and calculate when that was */
|
|
if (uptime(&uptime_secs, &idle_secs) == 0)
|
|
xerrx(EXIT_FAILURE, "uptime");
|
|
up_since_secs = (time_t) ((now - uptime_secs) + 0.5);
|
|
|
|
/* Show this */
|
|
if ((up_since = localtime(&up_since_secs)) == NULL)
|
|
xerrx(EXIT_FAILURE, "localtime");
|
|
printf("%04d-%02d-%02d %02d:%02d:%02d\n",
|
|
up_since->tm_year + 1900, up_since->tm_mon + 1, up_since->tm_mday,
|
|
up_since->tm_hour, up_since->tm_min, up_since->tm_sec);
|
|
}
|
|
|
|
static void __attribute__ ((__noreturn__)) usage(FILE * out)
|
|
{
|
|
fputs(USAGE_HEADER, out);
|
|
fprintf(out, _(" %s [options]\n"), program_invocation_short_name);
|
|
fputs(USAGE_OPTIONS, out);
|
|
fputs(_(" -p, --pretty show uptime in pretty format\n"), out);
|
|
fputs(USAGE_HELP, out);
|
|
fputs(_(" -s, --since system up since\n"), out);
|
|
fputs(USAGE_VERSION, out);
|
|
fprintf(out, USAGE_MAN_TAIL("uptime(1)"));
|
|
|
|
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int c, p = 0;
|
|
|
|
static const struct option longopts[] = {
|
|
{"pretty", no_argument, NULL, 'p'},
|
|
{"help", no_argument, NULL, 'h'},
|
|
{"since", no_argument, NULL, 's'},
|
|
{"version", no_argument, NULL, 'V'},
|
|
{NULL, 0, NULL, 0}
|
|
};
|
|
|
|
#ifdef HAVE_PROGRAM_INVOCATION_NAME
|
|
program_invocation_name = program_invocation_short_name;
|
|
#endif
|
|
setlocale (LC_ALL, "");
|
|
bindtextdomain(PACKAGE, LOCALEDIR);
|
|
textdomain(PACKAGE);
|
|
atexit(close_stdout);
|
|
|
|
while ((c = getopt_long(argc, argv, "phsV", longopts, NULL)) != -1)
|
|
switch (c) {
|
|
case 'p':
|
|
p = 1;
|
|
break;
|
|
case 'h':
|
|
usage(stdout);
|
|
case 's':
|
|
print_uptime_since();
|
|
return EXIT_SUCCESS;
|
|
case 'V':
|
|
printf(PROCPS_NG_VERSION);
|
|
return EXIT_SUCCESS;
|
|
default:
|
|
usage(stderr);
|
|
}
|
|
|
|
if (optind != argc)
|
|
usage(stderr);
|
|
|
|
print_uptime(p);
|
|
return EXIT_SUCCESS;
|
|
}
|